Mercurial > hg > graal-compiler
annotate src/cpu/x86/vm/sharedRuntime_x86_32.cpp @ 1580:f56e28f22410
6958458: Bump the HS19 build number to 03
Summary: Update the HS19 build number to 03
Reviewed-by: jcoomes
author | trims |
---|---|
date | Thu, 03 Jun 2010 18:18:56 -0700 |
parents | c18cbe5936b8 |
children | f95d63e2154a |
rev | line source |
---|---|
0 | 1 /* |
1552
c18cbe5936b8
6941466: Oracle rebranding changes for Hotspot repositories
trims
parents:
1506
diff
changeset
|
2 * Copyright (c) 2003, 2010, Oracle and/or its affiliates. All rights reserved. |
0 | 3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
4 * | |
5 * This code is free software; you can redistribute it and/or modify it | |
6 * under the terms of the GNU General Public License version 2 only, as | |
7 * published by the Free Software Foundation. | |
8 * | |
9 * This code is distributed in the hope that it will be useful, but WITHOUT | |
10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or | |
11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License | |
12 * version 2 for more details (a copy is included in the LICENSE file that | |
13 * accompanied this code). | |
14 * | |
15 * You should have received a copy of the GNU General Public License version | |
16 * 2 along with this work; if not, write to the Free Software Foundation, | |
17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. | |
18 * | |
1552
c18cbe5936b8
6941466: Oracle rebranding changes for Hotspot repositories
trims
parents:
1506
diff
changeset
|
19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
c18cbe5936b8
6941466: Oracle rebranding changes for Hotspot repositories
trims
parents:
1506
diff
changeset
|
20 * or visit www.oracle.com if you need additional information or have any |
c18cbe5936b8
6941466: Oracle rebranding changes for Hotspot repositories
trims
parents:
1506
diff
changeset
|
21 * questions. |
0 | 22 * |
23 */ | |
24 | |
25 #include "incls/_precompiled.incl" | |
26 #include "incls/_sharedRuntime_x86_32.cpp.incl" | |
27 | |
28 #define __ masm-> | |
29 #ifdef COMPILER2 | |
30 UncommonTrapBlob *SharedRuntime::_uncommon_trap_blob; | |
31 #endif // COMPILER2 | |
32 | |
33 DeoptimizationBlob *SharedRuntime::_deopt_blob; | |
34 SafepointBlob *SharedRuntime::_polling_page_safepoint_handler_blob; | |
35 SafepointBlob *SharedRuntime::_polling_page_return_handler_blob; | |
36 RuntimeStub* SharedRuntime::_wrong_method_blob; | |
37 RuntimeStub* SharedRuntime::_ic_miss_blob; | |
38 RuntimeStub* SharedRuntime::_resolve_opt_virtual_call_blob; | |
39 RuntimeStub* SharedRuntime::_resolve_virtual_call_blob; | |
40 RuntimeStub* SharedRuntime::_resolve_static_call_blob; | |
41 | |
524
c9004fe53695
6792301: StackAlignmentInBytes not honored for compiled native methods
xlu
parents:
512
diff
changeset
|
42 const int StackAlignmentInSlots = StackAlignmentInBytes / VMRegImpl::stack_slot_size; |
c9004fe53695
6792301: StackAlignmentInBytes not honored for compiled native methods
xlu
parents:
512
diff
changeset
|
43 |
0 | 44 class RegisterSaver { |
45 enum { FPU_regs_live = 8 /*for the FPU stack*/+8/*eight more for XMM registers*/ }; | |
46 // Capture info about frame layout | |
47 enum layout { | |
48 fpu_state_off = 0, | |
49 fpu_state_end = fpu_state_off+FPUStateSizeInWords-1, | |
50 st0_off, st0H_off, | |
51 st1_off, st1H_off, | |
52 st2_off, st2H_off, | |
53 st3_off, st3H_off, | |
54 st4_off, st4H_off, | |
55 st5_off, st5H_off, | |
56 st6_off, st6H_off, | |
57 st7_off, st7H_off, | |
58 | |
59 xmm0_off, xmm0H_off, | |
60 xmm1_off, xmm1H_off, | |
61 xmm2_off, xmm2H_off, | |
62 xmm3_off, xmm3H_off, | |
63 xmm4_off, xmm4H_off, | |
64 xmm5_off, xmm5H_off, | |
65 xmm6_off, xmm6H_off, | |
66 xmm7_off, xmm7H_off, | |
67 flags_off, | |
68 rdi_off, | |
69 rsi_off, | |
70 ignore_off, // extra copy of rbp, | |
71 rsp_off, | |
72 rbx_off, | |
73 rdx_off, | |
74 rcx_off, | |
75 rax_off, | |
76 // The frame sender code expects that rbp will be in the "natural" place and | |
77 // will override any oopMap setting for it. We must therefore force the layout | |
78 // so that it agrees with the frame sender code. | |
79 rbp_off, | |
80 return_off, // slot for return address | |
81 reg_save_size }; | |
82 | |
83 | |
84 public: | |
85 | |
86 static OopMap* save_live_registers(MacroAssembler* masm, int additional_frame_words, | |
87 int* total_frame_words, bool verify_fpu = true); | |
88 static void restore_live_registers(MacroAssembler* masm); | |
89 | |
90 static int rax_offset() { return rax_off; } | |
91 static int rbx_offset() { return rbx_off; } | |
92 | |
93 // Offsets into the register save area | |
94 // Used by deoptimization when it is managing result register | |
95 // values on its own | |
96 | |
97 static int raxOffset(void) { return rax_off; } | |
98 static int rdxOffset(void) { return rdx_off; } | |
99 static int rbxOffset(void) { return rbx_off; } | |
100 static int xmm0Offset(void) { return xmm0_off; } | |
101 // This really returns a slot in the fp save area, which one is not important | |
102 static int fpResultOffset(void) { return st0_off; } | |
103 | |
104 // During deoptimization only the result register need to be restored | |
105 // all the other values have already been extracted. | |
106 | |
107 static void restore_result_registers(MacroAssembler* masm); | |
108 | |
109 }; | |
110 | |
111 OopMap* RegisterSaver::save_live_registers(MacroAssembler* masm, int additional_frame_words, | |
112 int* total_frame_words, bool verify_fpu) { | |
113 | |
114 int frame_size_in_bytes = (reg_save_size + additional_frame_words) * wordSize; | |
115 int frame_words = frame_size_in_bytes / wordSize; | |
116 *total_frame_words = frame_words; | |
117 | |
118 assert(FPUStateSizeInWords == 27, "update stack layout"); | |
119 | |
120 // save registers, fpu state, and flags | |
121 // We assume caller has already has return address slot on the stack | |
122 // We push epb twice in this sequence because we want the real rbp, | |
304 | 123 // to be under the return like a normal enter and we want to use pusha |
0 | 124 // We push by hand instead of pusing push |
125 __ enter(); | |
304 | 126 __ pusha(); |
127 __ pushf(); | |
128 __ subptr(rsp,FPU_regs_live*sizeof(jdouble)); // Push FPU registers space | |
0 | 129 __ push_FPU_state(); // Save FPU state & init |
130 | |
131 if (verify_fpu) { | |
132 // Some stubs may have non standard FPU control word settings so | |
133 // only check and reset the value when it required to be the | |
134 // standard value. The safepoint blob in particular can be used | |
135 // in methods which are using the 24 bit control word for | |
136 // optimized float math. | |
137 | |
138 #ifdef ASSERT | |
139 // Make sure the control word has the expected value | |
140 Label ok; | |
141 __ cmpw(Address(rsp, 0), StubRoutines::fpu_cntrl_wrd_std()); | |
142 __ jccb(Assembler::equal, ok); | |
143 __ stop("corrupted control word detected"); | |
144 __ bind(ok); | |
145 #endif | |
146 | |
147 // Reset the control word to guard against exceptions being unmasked | |
148 // since fstp_d can cause FPU stack underflow exceptions. Write it | |
149 // into the on stack copy and then reload that to make sure that the | |
150 // current and future values are correct. | |
151 __ movw(Address(rsp, 0), StubRoutines::fpu_cntrl_wrd_std()); | |
152 } | |
153 | |
154 __ frstor(Address(rsp, 0)); | |
155 if (!verify_fpu) { | |
156 // Set the control word so that exceptions are masked for the | |
157 // following code. | |
158 __ fldcw(ExternalAddress(StubRoutines::addr_fpu_cntrl_wrd_std())); | |
159 } | |
160 | |
161 // Save the FPU registers in de-opt-able form | |
162 | |
163 __ fstp_d(Address(rsp, st0_off*wordSize)); // st(0) | |
164 __ fstp_d(Address(rsp, st1_off*wordSize)); // st(1) | |
165 __ fstp_d(Address(rsp, st2_off*wordSize)); // st(2) | |
166 __ fstp_d(Address(rsp, st3_off*wordSize)); // st(3) | |
167 __ fstp_d(Address(rsp, st4_off*wordSize)); // st(4) | |
168 __ fstp_d(Address(rsp, st5_off*wordSize)); // st(5) | |
169 __ fstp_d(Address(rsp, st6_off*wordSize)); // st(6) | |
170 __ fstp_d(Address(rsp, st7_off*wordSize)); // st(7) | |
171 | |
172 if( UseSSE == 1 ) { // Save the XMM state | |
173 __ movflt(Address(rsp,xmm0_off*wordSize),xmm0); | |
174 __ movflt(Address(rsp,xmm1_off*wordSize),xmm1); | |
175 __ movflt(Address(rsp,xmm2_off*wordSize),xmm2); | |
176 __ movflt(Address(rsp,xmm3_off*wordSize),xmm3); | |
177 __ movflt(Address(rsp,xmm4_off*wordSize),xmm4); | |
178 __ movflt(Address(rsp,xmm5_off*wordSize),xmm5); | |
179 __ movflt(Address(rsp,xmm6_off*wordSize),xmm6); | |
180 __ movflt(Address(rsp,xmm7_off*wordSize),xmm7); | |
181 } else if( UseSSE >= 2 ) { | |
182 __ movdbl(Address(rsp,xmm0_off*wordSize),xmm0); | |
183 __ movdbl(Address(rsp,xmm1_off*wordSize),xmm1); | |
184 __ movdbl(Address(rsp,xmm2_off*wordSize),xmm2); | |
185 __ movdbl(Address(rsp,xmm3_off*wordSize),xmm3); | |
186 __ movdbl(Address(rsp,xmm4_off*wordSize),xmm4); | |
187 __ movdbl(Address(rsp,xmm5_off*wordSize),xmm5); | |
188 __ movdbl(Address(rsp,xmm6_off*wordSize),xmm6); | |
189 __ movdbl(Address(rsp,xmm7_off*wordSize),xmm7); | |
190 } | |
191 | |
192 // Set an oopmap for the call site. This oopmap will map all | |
193 // oop-registers and debug-info registers as callee-saved. This | |
194 // will allow deoptimization at this safepoint to find all possible | |
195 // debug-info recordings, as well as let GC find all oops. | |
196 | |
197 OopMapSet *oop_maps = new OopMapSet(); | |
198 OopMap* map = new OopMap( frame_words, 0 ); | |
199 | |
200 #define STACK_OFFSET(x) VMRegImpl::stack2reg((x) + additional_frame_words) | |
201 | |
202 map->set_callee_saved(STACK_OFFSET( rax_off), rax->as_VMReg()); | |
203 map->set_callee_saved(STACK_OFFSET( rcx_off), rcx->as_VMReg()); | |
204 map->set_callee_saved(STACK_OFFSET( rdx_off), rdx->as_VMReg()); | |
205 map->set_callee_saved(STACK_OFFSET( rbx_off), rbx->as_VMReg()); | |
206 // rbp, location is known implicitly, no oopMap | |
207 map->set_callee_saved(STACK_OFFSET( rsi_off), rsi->as_VMReg()); | |
208 map->set_callee_saved(STACK_OFFSET( rdi_off), rdi->as_VMReg()); | |
209 map->set_callee_saved(STACK_OFFSET(st0_off), as_FloatRegister(0)->as_VMReg()); | |
210 map->set_callee_saved(STACK_OFFSET(st1_off), as_FloatRegister(1)->as_VMReg()); | |
211 map->set_callee_saved(STACK_OFFSET(st2_off), as_FloatRegister(2)->as_VMReg()); | |
212 map->set_callee_saved(STACK_OFFSET(st3_off), as_FloatRegister(3)->as_VMReg()); | |
213 map->set_callee_saved(STACK_OFFSET(st4_off), as_FloatRegister(4)->as_VMReg()); | |
214 map->set_callee_saved(STACK_OFFSET(st5_off), as_FloatRegister(5)->as_VMReg()); | |
215 map->set_callee_saved(STACK_OFFSET(st6_off), as_FloatRegister(6)->as_VMReg()); | |
216 map->set_callee_saved(STACK_OFFSET(st7_off), as_FloatRegister(7)->as_VMReg()); | |
217 map->set_callee_saved(STACK_OFFSET(xmm0_off), xmm0->as_VMReg()); | |
218 map->set_callee_saved(STACK_OFFSET(xmm1_off), xmm1->as_VMReg()); | |
219 map->set_callee_saved(STACK_OFFSET(xmm2_off), xmm2->as_VMReg()); | |
220 map->set_callee_saved(STACK_OFFSET(xmm3_off), xmm3->as_VMReg()); | |
221 map->set_callee_saved(STACK_OFFSET(xmm4_off), xmm4->as_VMReg()); | |
222 map->set_callee_saved(STACK_OFFSET(xmm5_off), xmm5->as_VMReg()); | |
223 map->set_callee_saved(STACK_OFFSET(xmm6_off), xmm6->as_VMReg()); | |
224 map->set_callee_saved(STACK_OFFSET(xmm7_off), xmm7->as_VMReg()); | |
225 // %%% This is really a waste but we'll keep things as they were for now | |
226 if (true) { | |
227 #define NEXTREG(x) (x)->as_VMReg()->next() | |
228 map->set_callee_saved(STACK_OFFSET(st0H_off), NEXTREG(as_FloatRegister(0))); | |
229 map->set_callee_saved(STACK_OFFSET(st1H_off), NEXTREG(as_FloatRegister(1))); | |
230 map->set_callee_saved(STACK_OFFSET(st2H_off), NEXTREG(as_FloatRegister(2))); | |
231 map->set_callee_saved(STACK_OFFSET(st3H_off), NEXTREG(as_FloatRegister(3))); | |
232 map->set_callee_saved(STACK_OFFSET(st4H_off), NEXTREG(as_FloatRegister(4))); | |
233 map->set_callee_saved(STACK_OFFSET(st5H_off), NEXTREG(as_FloatRegister(5))); | |
234 map->set_callee_saved(STACK_OFFSET(st6H_off), NEXTREG(as_FloatRegister(6))); | |
235 map->set_callee_saved(STACK_OFFSET(st7H_off), NEXTREG(as_FloatRegister(7))); | |
236 map->set_callee_saved(STACK_OFFSET(xmm0H_off), NEXTREG(xmm0)); | |
237 map->set_callee_saved(STACK_OFFSET(xmm1H_off), NEXTREG(xmm1)); | |
238 map->set_callee_saved(STACK_OFFSET(xmm2H_off), NEXTREG(xmm2)); | |
239 map->set_callee_saved(STACK_OFFSET(xmm3H_off), NEXTREG(xmm3)); | |
240 map->set_callee_saved(STACK_OFFSET(xmm4H_off), NEXTREG(xmm4)); | |
241 map->set_callee_saved(STACK_OFFSET(xmm5H_off), NEXTREG(xmm5)); | |
242 map->set_callee_saved(STACK_OFFSET(xmm6H_off), NEXTREG(xmm6)); | |
243 map->set_callee_saved(STACK_OFFSET(xmm7H_off), NEXTREG(xmm7)); | |
244 #undef NEXTREG | |
245 #undef STACK_OFFSET | |
246 } | |
247 | |
248 return map; | |
249 | |
250 } | |
251 | |
252 void RegisterSaver::restore_live_registers(MacroAssembler* masm) { | |
253 | |
254 // Recover XMM & FPU state | |
255 if( UseSSE == 1 ) { | |
256 __ movflt(xmm0,Address(rsp,xmm0_off*wordSize)); | |
257 __ movflt(xmm1,Address(rsp,xmm1_off*wordSize)); | |
258 __ movflt(xmm2,Address(rsp,xmm2_off*wordSize)); | |
259 __ movflt(xmm3,Address(rsp,xmm3_off*wordSize)); | |
260 __ movflt(xmm4,Address(rsp,xmm4_off*wordSize)); | |
261 __ movflt(xmm5,Address(rsp,xmm5_off*wordSize)); | |
262 __ movflt(xmm6,Address(rsp,xmm6_off*wordSize)); | |
263 __ movflt(xmm7,Address(rsp,xmm7_off*wordSize)); | |
264 } else if( UseSSE >= 2 ) { | |
265 __ movdbl(xmm0,Address(rsp,xmm0_off*wordSize)); | |
266 __ movdbl(xmm1,Address(rsp,xmm1_off*wordSize)); | |
267 __ movdbl(xmm2,Address(rsp,xmm2_off*wordSize)); | |
268 __ movdbl(xmm3,Address(rsp,xmm3_off*wordSize)); | |
269 __ movdbl(xmm4,Address(rsp,xmm4_off*wordSize)); | |
270 __ movdbl(xmm5,Address(rsp,xmm5_off*wordSize)); | |
271 __ movdbl(xmm6,Address(rsp,xmm6_off*wordSize)); | |
272 __ movdbl(xmm7,Address(rsp,xmm7_off*wordSize)); | |
273 } | |
274 __ pop_FPU_state(); | |
304 | 275 __ addptr(rsp, FPU_regs_live*sizeof(jdouble)); // Pop FPU registers |
276 | |
277 __ popf(); | |
278 __ popa(); | |
0 | 279 // Get the rbp, described implicitly by the frame sender code (no oopMap) |
304 | 280 __ pop(rbp); |
0 | 281 |
282 } | |
283 | |
284 void RegisterSaver::restore_result_registers(MacroAssembler* masm) { | |
285 | |
286 // Just restore result register. Only used by deoptimization. By | |
287 // now any callee save register that needs to be restore to a c2 | |
288 // caller of the deoptee has been extracted into the vframeArray | |
289 // and will be stuffed into the c2i adapter we create for later | |
290 // restoration so only result registers need to be restored here. | |
291 // | |
292 | |
293 __ frstor(Address(rsp, 0)); // Restore fpu state | |
294 | |
295 // Recover XMM & FPU state | |
296 if( UseSSE == 1 ) { | |
297 __ movflt(xmm0, Address(rsp, xmm0_off*wordSize)); | |
298 } else if( UseSSE >= 2 ) { | |
299 __ movdbl(xmm0, Address(rsp, xmm0_off*wordSize)); | |
300 } | |
304 | 301 __ movptr(rax, Address(rsp, rax_off*wordSize)); |
302 __ movptr(rdx, Address(rsp, rdx_off*wordSize)); | |
0 | 303 // Pop all of the register save are off the stack except the return address |
304 | 304 __ addptr(rsp, return_off * wordSize); |
0 | 305 } |
306 | |
307 // The java_calling_convention describes stack locations as ideal slots on | |
308 // a frame with no abi restrictions. Since we must observe abi restrictions | |
309 // (like the placement of the register window) the slots must be biased by | |
310 // the following value. | |
311 static int reg2offset_in(VMReg r) { | |
312 // Account for saved rbp, and return address | |
313 // This should really be in_preserve_stack_slots | |
314 return (r->reg2stack() + 2) * VMRegImpl::stack_slot_size; | |
315 } | |
316 | |
317 static int reg2offset_out(VMReg r) { | |
318 return (r->reg2stack() + SharedRuntime::out_preserve_stack_slots()) * VMRegImpl::stack_slot_size; | |
319 } | |
320 | |
321 // --------------------------------------------------------------------------- | |
322 // Read the array of BasicTypes from a signature, and compute where the | |
323 // arguments should go. Values in the VMRegPair regs array refer to 4-byte | |
324 // quantities. Values less than SharedInfo::stack0 are registers, those above | |
325 // refer to 4-byte stack slots. All stack slots are based off of the stack pointer | |
326 // as framesizes are fixed. | |
327 // VMRegImpl::stack0 refers to the first slot 0(sp). | |
328 // and VMRegImpl::stack0+1 refers to the memory word 4-byes higher. Register | |
329 // up to RegisterImpl::number_of_registers) are the 32-bit | |
330 // integer registers. | |
331 | |
332 // Pass first two oop/int args in registers ECX and EDX. | |
333 // Pass first two float/double args in registers XMM0 and XMM1. | |
334 // Doubles have precedence, so if you pass a mix of floats and doubles | |
335 // the doubles will grab the registers before the floats will. | |
336 | |
337 // Note: the INPUTS in sig_bt are in units of Java argument words, which are | |
338 // either 32-bit or 64-bit depending on the build. The OUTPUTS are in 32-bit | |
339 // units regardless of build. Of course for i486 there is no 64 bit build | |
340 | |
341 | |
342 // --------------------------------------------------------------------------- | |
343 // The compiled Java calling convention. | |
344 // Pass first two oop/int args in registers ECX and EDX. | |
345 // Pass first two float/double args in registers XMM0 and XMM1. | |
346 // Doubles have precedence, so if you pass a mix of floats and doubles | |
347 // the doubles will grab the registers before the floats will. | |
348 int SharedRuntime::java_calling_convention(const BasicType *sig_bt, | |
349 VMRegPair *regs, | |
350 int total_args_passed, | |
351 int is_outgoing) { | |
352 uint stack = 0; // Starting stack position for args on stack | |
353 | |
354 | |
355 // Pass first two oop/int args in registers ECX and EDX. | |
356 uint reg_arg0 = 9999; | |
357 uint reg_arg1 = 9999; | |
358 | |
359 // Pass first two float/double args in registers XMM0 and XMM1. | |
360 // Doubles have precedence, so if you pass a mix of floats and doubles | |
361 // the doubles will grab the registers before the floats will. | |
362 // CNC - TURNED OFF FOR non-SSE. | |
363 // On Intel we have to round all doubles (and most floats) at | |
364 // call sites by storing to the stack in any case. | |
365 // UseSSE=0 ==> Don't Use ==> 9999+0 | |
366 // UseSSE=1 ==> Floats only ==> 9999+1 | |
367 // UseSSE>=2 ==> Floats or doubles ==> 9999+2 | |
368 enum { fltarg_dontuse = 9999+0, fltarg_float_only = 9999+1, fltarg_flt_dbl = 9999+2 }; | |
369 uint fargs = (UseSSE>=2) ? 2 : UseSSE; | |
370 uint freg_arg0 = 9999+fargs; | |
371 uint freg_arg1 = 9999+fargs; | |
372 | |
373 // Pass doubles & longs aligned on the stack. First count stack slots for doubles | |
374 int i; | |
375 for( i = 0; i < total_args_passed; i++) { | |
376 if( sig_bt[i] == T_DOUBLE ) { | |
377 // first 2 doubles go in registers | |
378 if( freg_arg0 == fltarg_flt_dbl ) freg_arg0 = i; | |
379 else if( freg_arg1 == fltarg_flt_dbl ) freg_arg1 = i; | |
380 else // Else double is passed low on the stack to be aligned. | |
381 stack += 2; | |
382 } else if( sig_bt[i] == T_LONG ) { | |
383 stack += 2; | |
384 } | |
385 } | |
386 int dstack = 0; // Separate counter for placing doubles | |
387 | |
388 // Now pick where all else goes. | |
389 for( i = 0; i < total_args_passed; i++) { | |
390 // From the type and the argument number (count) compute the location | |
391 switch( sig_bt[i] ) { | |
392 case T_SHORT: | |
393 case T_CHAR: | |
394 case T_BYTE: | |
395 case T_BOOLEAN: | |
396 case T_INT: | |
397 case T_ARRAY: | |
398 case T_OBJECT: | |
399 case T_ADDRESS: | |
400 if( reg_arg0 == 9999 ) { | |
401 reg_arg0 = i; | |
402 regs[i].set1(rcx->as_VMReg()); | |
403 } else if( reg_arg1 == 9999 ) { | |
404 reg_arg1 = i; | |
405 regs[i].set1(rdx->as_VMReg()); | |
406 } else { | |
407 regs[i].set1(VMRegImpl::stack2reg(stack++)); | |
408 } | |
409 break; | |
410 case T_FLOAT: | |
411 if( freg_arg0 == fltarg_flt_dbl || freg_arg0 == fltarg_float_only ) { | |
412 freg_arg0 = i; | |
413 regs[i].set1(xmm0->as_VMReg()); | |
414 } else if( freg_arg1 == fltarg_flt_dbl || freg_arg1 == fltarg_float_only ) { | |
415 freg_arg1 = i; | |
416 regs[i].set1(xmm1->as_VMReg()); | |
417 } else { | |
418 regs[i].set1(VMRegImpl::stack2reg(stack++)); | |
419 } | |
420 break; | |
421 case T_LONG: | |
422 assert(sig_bt[i+1] == T_VOID, "missing Half" ); | |
423 regs[i].set2(VMRegImpl::stack2reg(dstack)); | |
424 dstack += 2; | |
425 break; | |
426 case T_DOUBLE: | |
427 assert(sig_bt[i+1] == T_VOID, "missing Half" ); | |
428 if( freg_arg0 == (uint)i ) { | |
429 regs[i].set2(xmm0->as_VMReg()); | |
430 } else if( freg_arg1 == (uint)i ) { | |
431 regs[i].set2(xmm1->as_VMReg()); | |
432 } else { | |
433 regs[i].set2(VMRegImpl::stack2reg(dstack)); | |
434 dstack += 2; | |
435 } | |
436 break; | |
437 case T_VOID: regs[i].set_bad(); break; | |
438 break; | |
439 default: | |
440 ShouldNotReachHere(); | |
441 break; | |
442 } | |
443 } | |
444 | |
445 // return value can be odd number of VMRegImpl stack slots make multiple of 2 | |
446 return round_to(stack, 2); | |
447 } | |
448 | |
449 // Patch the callers callsite with entry to compiled code if it exists. | |
450 static void patch_callers_callsite(MacroAssembler *masm) { | |
451 Label L; | |
452 __ verify_oop(rbx); | |
304 | 453 __ cmpptr(Address(rbx, in_bytes(methodOopDesc::code_offset())), (int32_t)NULL_WORD); |
0 | 454 __ jcc(Assembler::equal, L); |
455 // Schedule the branch target address early. | |
456 // Call into the VM to patch the caller, then jump to compiled callee | |
457 // rax, isn't live so capture return address while we easily can | |
304 | 458 __ movptr(rax, Address(rsp, 0)); |
459 __ pusha(); | |
460 __ pushf(); | |
0 | 461 |
462 if (UseSSE == 1) { | |
304 | 463 __ subptr(rsp, 2*wordSize); |
0 | 464 __ movflt(Address(rsp, 0), xmm0); |
465 __ movflt(Address(rsp, wordSize), xmm1); | |
466 } | |
467 if (UseSSE >= 2) { | |
304 | 468 __ subptr(rsp, 4*wordSize); |
0 | 469 __ movdbl(Address(rsp, 0), xmm0); |
470 __ movdbl(Address(rsp, 2*wordSize), xmm1); | |
471 } | |
472 #ifdef COMPILER2 | |
473 // C2 may leave the stack dirty if not in SSE2+ mode | |
474 if (UseSSE >= 2) { | |
475 __ verify_FPU(0, "c2i transition should have clean FPU stack"); | |
476 } else { | |
477 __ empty_FPU_stack(); | |
478 } | |
479 #endif /* COMPILER2 */ | |
480 | |
481 // VM needs caller's callsite | |
304 | 482 __ push(rax); |
0 | 483 // VM needs target method |
304 | 484 __ push(rbx); |
0 | 485 __ verify_oop(rbx); |
486 __ call(RuntimeAddress(CAST_FROM_FN_PTR(address, SharedRuntime::fixup_callers_callsite))); | |
304 | 487 __ addptr(rsp, 2*wordSize); |
0 | 488 |
489 if (UseSSE == 1) { | |
490 __ movflt(xmm0, Address(rsp, 0)); | |
491 __ movflt(xmm1, Address(rsp, wordSize)); | |
304 | 492 __ addptr(rsp, 2*wordSize); |
0 | 493 } |
494 if (UseSSE >= 2) { | |
495 __ movdbl(xmm0, Address(rsp, 0)); | |
496 __ movdbl(xmm1, Address(rsp, 2*wordSize)); | |
304 | 497 __ addptr(rsp, 4*wordSize); |
0 | 498 } |
499 | |
304 | 500 __ popf(); |
501 __ popa(); | |
0 | 502 __ bind(L); |
503 } | |
504 | |
505 | |
506 static void move_c2i_double(MacroAssembler *masm, XMMRegister r, int st_off) { | |
1506 | 507 int next_off = st_off - Interpreter::stackElementSize; |
508 __ movdbl(Address(rsp, next_off), r); | |
0 | 509 } |
510 | |
511 static void gen_c2i_adapter(MacroAssembler *masm, | |
512 int total_args_passed, | |
513 int comp_args_on_stack, | |
514 const BasicType *sig_bt, | |
515 const VMRegPair *regs, | |
516 Label& skip_fixup) { | |
517 // Before we get into the guts of the C2I adapter, see if we should be here | |
518 // at all. We've come from compiled code and are attempting to jump to the | |
519 // interpreter, which means the caller made a static call to get here | |
520 // (vcalls always get a compiled target if there is one). Check for a | |
521 // compiled target. If there is one, we need to patch the caller's call. | |
522 patch_callers_callsite(masm); | |
523 | |
524 __ bind(skip_fixup); | |
525 | |
526 #ifdef COMPILER2 | |
527 // C2 may leave the stack dirty if not in SSE2+ mode | |
528 if (UseSSE >= 2) { | |
529 __ verify_FPU(0, "c2i transition should have clean FPU stack"); | |
530 } else { | |
531 __ empty_FPU_stack(); | |
532 } | |
533 #endif /* COMPILER2 */ | |
534 | |
535 // Since all args are passed on the stack, total_args_passed * interpreter_ | |
536 // stack_element_size is the | |
537 // space we need. | |
1506 | 538 int extraspace = total_args_passed * Interpreter::stackElementSize; |
0 | 539 |
540 // Get return address | |
304 | 541 __ pop(rax); |
0 | 542 |
543 // set senderSP value | |
304 | 544 __ movptr(rsi, rsp); |
545 | |
546 __ subptr(rsp, extraspace); | |
0 | 547 |
548 // Now write the args into the outgoing interpreter space | |
549 for (int i = 0; i < total_args_passed; i++) { | |
550 if (sig_bt[i] == T_VOID) { | |
551 assert(i > 0 && (sig_bt[i-1] == T_LONG || sig_bt[i-1] == T_DOUBLE), "missing half"); | |
552 continue; | |
553 } | |
554 | |
555 // st_off points to lowest address on stack. | |
1506 | 556 int st_off = ((total_args_passed - 1) - i) * Interpreter::stackElementSize; |
557 int next_off = st_off - Interpreter::stackElementSize; | |
304 | 558 |
0 | 559 // Say 4 args: |
560 // i st_off | |
561 // 0 12 T_LONG | |
562 // 1 8 T_VOID | |
563 // 2 4 T_OBJECT | |
564 // 3 0 T_BOOL | |
565 VMReg r_1 = regs[i].first(); | |
566 VMReg r_2 = regs[i].second(); | |
567 if (!r_1->is_valid()) { | |
568 assert(!r_2->is_valid(), ""); | |
569 continue; | |
570 } | |
571 | |
572 if (r_1->is_stack()) { | |
573 // memory to memory use fpu stack top | |
574 int ld_off = r_1->reg2stack() * VMRegImpl::stack_slot_size + extraspace; | |
575 | |
576 if (!r_2->is_valid()) { | |
577 __ movl(rdi, Address(rsp, ld_off)); | |
304 | 578 __ movptr(Address(rsp, st_off), rdi); |
0 | 579 } else { |
580 | |
581 // ld_off == LSW, ld_off+VMRegImpl::stack_slot_size == MSW | |
582 // st_off == MSW, st_off-wordSize == LSW | |
583 | |
304 | 584 __ movptr(rdi, Address(rsp, ld_off)); |
585 __ movptr(Address(rsp, next_off), rdi); | |
586 #ifndef _LP64 | |
587 __ movptr(rdi, Address(rsp, ld_off + wordSize)); | |
588 __ movptr(Address(rsp, st_off), rdi); | |
589 #else | |
590 #ifdef ASSERT | |
591 // Overwrite the unused slot with known junk | |
592 __ mov64(rax, CONST64(0xdeadffffdeadaaaa)); | |
593 __ movptr(Address(rsp, st_off), rax); | |
594 #endif /* ASSERT */ | |
595 #endif // _LP64 | |
0 | 596 } |
597 } else if (r_1->is_Register()) { | |
598 Register r = r_1->as_Register(); | |
599 if (!r_2->is_valid()) { | |
600 __ movl(Address(rsp, st_off), r); | |
601 } else { | |
602 // long/double in gpr | |
304 | 603 NOT_LP64(ShouldNotReachHere()); |
604 // Two VMRegs can be T_OBJECT, T_ADDRESS, T_DOUBLE, T_LONG | |
605 // T_DOUBLE and T_LONG use two slots in the interpreter | |
606 if ( sig_bt[i] == T_LONG || sig_bt[i] == T_DOUBLE) { | |
607 // long/double in gpr | |
608 #ifdef ASSERT | |
609 // Overwrite the unused slot with known junk | |
610 LP64_ONLY(__ mov64(rax, CONST64(0xdeadffffdeadaaab))); | |
611 __ movptr(Address(rsp, st_off), rax); | |
612 #endif /* ASSERT */ | |
613 __ movptr(Address(rsp, next_off), r); | |
614 } else { | |
615 __ movptr(Address(rsp, st_off), r); | |
616 } | |
0 | 617 } |
618 } else { | |
619 assert(r_1->is_XMMRegister(), ""); | |
620 if (!r_2->is_valid()) { | |
621 __ movflt(Address(rsp, st_off), r_1->as_XMMRegister()); | |
622 } else { | |
623 assert(sig_bt[i] == T_DOUBLE || sig_bt[i] == T_LONG, "wrong type"); | |
624 move_c2i_double(masm, r_1->as_XMMRegister(), st_off); | |
625 } | |
626 } | |
627 } | |
628 | |
629 // Schedule the branch target address early. | |
304 | 630 __ movptr(rcx, Address(rbx, in_bytes(methodOopDesc::interpreter_entry_offset()))); |
0 | 631 // And repush original return address |
304 | 632 __ push(rax); |
0 | 633 __ jmp(rcx); |
634 } | |
635 | |
636 | |
637 static void move_i2c_double(MacroAssembler *masm, XMMRegister r, Register saved_sp, int ld_off) { | |
1506 | 638 int next_val_off = ld_off - Interpreter::stackElementSize; |
639 __ movdbl(r, Address(saved_sp, next_val_off)); | |
0 | 640 } |
641 | |
642 static void gen_i2c_adapter(MacroAssembler *masm, | |
643 int total_args_passed, | |
644 int comp_args_on_stack, | |
645 const BasicType *sig_bt, | |
646 const VMRegPair *regs) { | |
647 // we're being called from the interpreter but need to find the | |
648 // compiled return entry point. The return address on the stack | |
649 // should point at it and we just need to pull the old value out. | |
650 // load up the pointer to the compiled return entry point and | |
651 // rewrite our return pc. The code is arranged like so: | |
652 // | |
653 // .word Interpreter::return_sentinel | |
654 // .word address_of_compiled_return_point | |
655 // return_entry_point: blah_blah_blah | |
656 // | |
657 // So we can find the appropriate return point by loading up the word | |
658 // just prior to the current return address we have on the stack. | |
659 // | |
660 // We will only enter here from an interpreted frame and never from after | |
661 // passing thru a c2i. Azul allowed this but we do not. If we lose the | |
662 // race and use a c2i we will remain interpreted for the race loser(s). | |
663 // This removes all sorts of headaches on the x86 side and also eliminates | |
664 // the possibility of having c2i -> i2c -> c2i -> ... endless transitions. | |
665 | |
666 | |
667 // Note: rsi contains the senderSP on entry. We must preserve it since | |
668 // we may do a i2c -> c2i transition if we lose a race where compiled | |
669 // code goes non-entrant while we get args ready. | |
670 | |
671 // Pick up the return address | |
304 | 672 __ movptr(rax, Address(rsp, 0)); |
0 | 673 |
674 // If UseSSE >= 2 then no cleanup is needed on the return to the | |
675 // interpreter so skip fixing up the return entry point unless | |
676 // VerifyFPU is enabled. | |
677 if (UseSSE < 2 || VerifyFPU) { | |
678 Label skip, chk_int; | |
679 // If we were called from the call stub we need to do a little bit different | |
680 // cleanup than if the interpreter returned to the call stub. | |
681 | |
682 ExternalAddress stub_return_address(StubRoutines::_call_stub_return_address); | |
304 | 683 __ cmpptr(rax, stub_return_address.addr()); |
0 | 684 __ jcc(Assembler::notEqual, chk_int); |
304 | 685 assert(StubRoutines::x86::get_call_stub_compiled_return() != NULL, "must be set"); |
686 __ lea(rax, ExternalAddress(StubRoutines::x86::get_call_stub_compiled_return())); | |
0 | 687 __ jmp(skip); |
688 | |
689 // It must be the interpreter since we never get here via a c2i (unlike Azul) | |
690 | |
691 __ bind(chk_int); | |
692 #ifdef ASSERT | |
693 { | |
694 Label ok; | |
304 | 695 __ cmpl(Address(rax, -2*wordSize), Interpreter::return_sentinel); |
0 | 696 __ jcc(Assembler::equal, ok); |
697 __ int3(); | |
698 __ bind(ok); | |
699 } | |
700 #endif // ASSERT | |
304 | 701 __ movptr(rax, Address(rax, -wordSize)); |
0 | 702 __ bind(skip); |
703 } | |
704 | |
705 // rax, now contains the compiled return entry point which will do an | |
706 // cleanup needed for the return from compiled to interpreted. | |
707 | |
708 // Must preserve original SP for loading incoming arguments because | |
709 // we need to align the outgoing SP for compiled code. | |
304 | 710 __ movptr(rdi, rsp); |
0 | 711 |
712 // Cut-out for having no stack args. Since up to 2 int/oop args are passed | |
713 // in registers, we will occasionally have no stack args. | |
714 int comp_words_on_stack = 0; | |
715 if (comp_args_on_stack) { | |
716 // Sig words on the stack are greater-than VMRegImpl::stack0. Those in | |
717 // registers are below. By subtracting stack0, we either get a negative | |
718 // number (all values in registers) or the maximum stack slot accessed. | |
719 // int comp_args_on_stack = VMRegImpl::reg2stack(max_arg); | |
720 // Convert 4-byte stack slots to words. | |
721 comp_words_on_stack = round_to(comp_args_on_stack*4, wordSize)>>LogBytesPerWord; | |
722 // Round up to miminum stack alignment, in wordSize | |
723 comp_words_on_stack = round_to(comp_words_on_stack, 2); | |
304 | 724 __ subptr(rsp, comp_words_on_stack * wordSize); |
0 | 725 } |
726 | |
727 // Align the outgoing SP | |
304 | 728 __ andptr(rsp, -(StackAlignmentInBytes)); |
0 | 729 |
730 // push the return address on the stack (note that pushing, rather | |
731 // than storing it, yields the correct frame alignment for the callee) | |
304 | 732 __ push(rax); |
0 | 733 |
734 // Put saved SP in another register | |
735 const Register saved_sp = rax; | |
304 | 736 __ movptr(saved_sp, rdi); |
0 | 737 |
738 | |
739 // Will jump to the compiled code just as if compiled code was doing it. | |
740 // Pre-load the register-jump target early, to schedule it better. | |
304 | 741 __ movptr(rdi, Address(rbx, in_bytes(methodOopDesc::from_compiled_offset()))); |
0 | 742 |
743 // Now generate the shuffle code. Pick up all register args and move the | |
744 // rest through the floating point stack top. | |
745 for (int i = 0; i < total_args_passed; i++) { | |
746 if (sig_bt[i] == T_VOID) { | |
747 // Longs and doubles are passed in native word order, but misaligned | |
748 // in the 32-bit build. | |
749 assert(i > 0 && (sig_bt[i-1] == T_LONG || sig_bt[i-1] == T_DOUBLE), "missing half"); | |
750 continue; | |
751 } | |
752 | |
753 // Pick up 0, 1 or 2 words from SP+offset. | |
754 | |
755 assert(!regs[i].second()->is_valid() || regs[i].first()->next() == regs[i].second(), | |
756 "scrambled load targets?"); | |
757 // Load in argument order going down. | |
1506 | 758 int ld_off = (total_args_passed - i) * Interpreter::stackElementSize; |
0 | 759 // Point to interpreter value (vs. tag) |
1506 | 760 int next_off = ld_off - Interpreter::stackElementSize; |
0 | 761 // |
762 // | |
763 // | |
764 VMReg r_1 = regs[i].first(); | |
765 VMReg r_2 = regs[i].second(); | |
766 if (!r_1->is_valid()) { | |
767 assert(!r_2->is_valid(), ""); | |
768 continue; | |
769 } | |
770 if (r_1->is_stack()) { | |
771 // Convert stack slot to an SP offset (+ wordSize to account for return address ) | |
772 int st_off = regs[i].first()->reg2stack()*VMRegImpl::stack_slot_size + wordSize; | |
773 | |
774 // We can use rsi as a temp here because compiled code doesn't need rsi as an input | |
775 // and if we end up going thru a c2i because of a miss a reasonable value of rsi | |
776 // we be generated. | |
777 if (!r_2->is_valid()) { | |
778 // __ fld_s(Address(saved_sp, ld_off)); | |
779 // __ fstp_s(Address(rsp, st_off)); | |
780 __ movl(rsi, Address(saved_sp, ld_off)); | |
304 | 781 __ movptr(Address(rsp, st_off), rsi); |
0 | 782 } else { |
783 // Interpreter local[n] == MSW, local[n+1] == LSW however locals | |
784 // are accessed as negative so LSW is at LOW address | |
785 | |
786 // ld_off is MSW so get LSW | |
787 // st_off is LSW (i.e. reg.first()) | |
788 // __ fld_d(Address(saved_sp, next_off)); | |
789 // __ fstp_d(Address(rsp, st_off)); | |
304 | 790 // |
791 // We are using two VMRegs. This can be either T_OBJECT, T_ADDRESS, T_LONG, or T_DOUBLE | |
792 // the interpreter allocates two slots but only uses one for thr T_LONG or T_DOUBLE case | |
793 // So we must adjust where to pick up the data to match the interpreter. | |
794 // | |
795 // Interpreter local[n] == MSW, local[n+1] == LSW however locals | |
796 // are accessed as negative so LSW is at LOW address | |
797 | |
798 // ld_off is MSW so get LSW | |
799 const int offset = (NOT_LP64(true ||) sig_bt[i]==T_LONG||sig_bt[i]==T_DOUBLE)? | |
800 next_off : ld_off; | |
801 __ movptr(rsi, Address(saved_sp, offset)); | |
802 __ movptr(Address(rsp, st_off), rsi); | |
803 #ifndef _LP64 | |
804 __ movptr(rsi, Address(saved_sp, ld_off)); | |
805 __ movptr(Address(rsp, st_off + wordSize), rsi); | |
806 #endif // _LP64 | |
0 | 807 } |
808 } else if (r_1->is_Register()) { // Register argument | |
809 Register r = r_1->as_Register(); | |
810 assert(r != rax, "must be different"); | |
811 if (r_2->is_valid()) { | |
304 | 812 // |
813 // We are using two VMRegs. This can be either T_OBJECT, T_ADDRESS, T_LONG, or T_DOUBLE | |
814 // the interpreter allocates two slots but only uses one for thr T_LONG or T_DOUBLE case | |
815 // So we must adjust where to pick up the data to match the interpreter. | |
816 | |
817 const int offset = (NOT_LP64(true ||) sig_bt[i]==T_LONG||sig_bt[i]==T_DOUBLE)? | |
818 next_off : ld_off; | |
819 | |
820 // this can be a misaligned move | |
821 __ movptr(r, Address(saved_sp, offset)); | |
822 #ifndef _LP64 | |
0 | 823 assert(r_2->as_Register() != rax, "need another temporary register"); |
824 // Remember r_1 is low address (and LSB on x86) | |
825 // So r_2 gets loaded from high address regardless of the platform | |
304 | 826 __ movptr(r_2->as_Register(), Address(saved_sp, ld_off)); |
827 #endif // _LP64 | |
0 | 828 } else { |
829 __ movl(r, Address(saved_sp, ld_off)); | |
830 } | |
831 } else { | |
832 assert(r_1->is_XMMRegister(), ""); | |
833 if (!r_2->is_valid()) { | |
834 __ movflt(r_1->as_XMMRegister(), Address(saved_sp, ld_off)); | |
835 } else { | |
836 move_i2c_double(masm, r_1->as_XMMRegister(), saved_sp, ld_off); | |
837 } | |
838 } | |
839 } | |
840 | |
841 // 6243940 We might end up in handle_wrong_method if | |
842 // the callee is deoptimized as we race thru here. If that | |
843 // happens we don't want to take a safepoint because the | |
844 // caller frame will look interpreted and arguments are now | |
845 // "compiled" so it is much better to make this transition | |
846 // invisible to the stack walking code. Unfortunately if | |
847 // we try and find the callee by normal means a safepoint | |
848 // is possible. So we stash the desired callee in the thread | |
849 // and the vm will find there should this case occur. | |
850 | |
851 __ get_thread(rax); | |
304 | 852 __ movptr(Address(rax, JavaThread::callee_target_offset()), rbx); |
0 | 853 |
854 // move methodOop to rax, in case we end up in an c2i adapter. | |
855 // the c2i adapters expect methodOop in rax, (c2) because c2's | |
856 // resolve stubs return the result (the method) in rax,. | |
857 // I'd love to fix this. | |
304 | 858 __ mov(rax, rbx); |
0 | 859 |
860 __ jmp(rdi); | |
861 } | |
862 | |
863 // --------------------------------------------------------------- | |
864 AdapterHandlerEntry* SharedRuntime::generate_i2c2i_adapters(MacroAssembler *masm, | |
865 int total_args_passed, | |
866 int comp_args_on_stack, | |
867 const BasicType *sig_bt, | |
1187
cf0685d550f1
6911204: generated adapters with large signatures can fill up the code cache
never
parents:
926
diff
changeset
|
868 const VMRegPair *regs, |
cf0685d550f1
6911204: generated adapters with large signatures can fill up the code cache
never
parents:
926
diff
changeset
|
869 AdapterFingerPrint* fingerprint) { |
0 | 870 address i2c_entry = __ pc(); |
871 | |
872 gen_i2c_adapter(masm, total_args_passed, comp_args_on_stack, sig_bt, regs); | |
873 | |
874 // ------------------------------------------------------------------------- | |
875 // Generate a C2I adapter. On entry we know rbx, holds the methodOop during calls | |
876 // to the interpreter. The args start out packed in the compiled layout. They | |
877 // need to be unpacked into the interpreter layout. This will almost always | |
878 // require some stack space. We grow the current (compiled) stack, then repack | |
879 // the args. We finally end in a jump to the generic interpreter entry point. | |
880 // On exit from the interpreter, the interpreter will restore our SP (lest the | |
881 // compiled code, which relys solely on SP and not EBP, get sick). | |
882 | |
883 address c2i_unverified_entry = __ pc(); | |
884 Label skip_fixup; | |
885 | |
886 Register holder = rax; | |
887 Register receiver = rcx; | |
888 Register temp = rbx; | |
889 | |
890 { | |
891 | |
892 Label missed; | |
893 | |
894 __ verify_oop(holder); | |
304 | 895 __ movptr(temp, Address(receiver, oopDesc::klass_offset_in_bytes())); |
0 | 896 __ verify_oop(temp); |
897 | |
304 | 898 __ cmpptr(temp, Address(holder, compiledICHolderOopDesc::holder_klass_offset())); |
899 __ movptr(rbx, Address(holder, compiledICHolderOopDesc::holder_method_offset())); | |
0 | 900 __ jcc(Assembler::notEqual, missed); |
901 // Method might have been compiled since the call site was patched to | |
902 // interpreted if that is the case treat it as a miss so we can get | |
903 // the call site corrected. | |
304 | 904 __ cmpptr(Address(rbx, in_bytes(methodOopDesc::code_offset())), (int32_t)NULL_WORD); |
0 | 905 __ jcc(Assembler::equal, skip_fixup); |
906 | |
907 __ bind(missed); | |
908 __ jump(RuntimeAddress(SharedRuntime::get_ic_miss_stub())); | |
909 } | |
910 | |
911 address c2i_entry = __ pc(); | |
912 | |
913 gen_c2i_adapter(masm, total_args_passed, comp_args_on_stack, sig_bt, regs, skip_fixup); | |
914 | |
915 __ flush(); | |
1187
cf0685d550f1
6911204: generated adapters with large signatures can fill up the code cache
never
parents:
926
diff
changeset
|
916 return AdapterHandlerLibrary::new_entry(fingerprint, i2c_entry, c2i_entry, c2i_unverified_entry); |
0 | 917 } |
918 | |
919 int SharedRuntime::c_calling_convention(const BasicType *sig_bt, | |
920 VMRegPair *regs, | |
921 int total_args_passed) { | |
922 // We return the amount of VMRegImpl stack slots we need to reserve for all | |
923 // the arguments NOT counting out_preserve_stack_slots. | |
924 | |
925 uint stack = 0; // All arguments on stack | |
926 | |
927 for( int i = 0; i < total_args_passed; i++) { | |
928 // From the type and the argument number (count) compute the location | |
929 switch( sig_bt[i] ) { | |
930 case T_BOOLEAN: | |
931 case T_CHAR: | |
932 case T_FLOAT: | |
933 case T_BYTE: | |
934 case T_SHORT: | |
935 case T_INT: | |
936 case T_OBJECT: | |
937 case T_ARRAY: | |
938 case T_ADDRESS: | |
939 regs[i].set1(VMRegImpl::stack2reg(stack++)); | |
940 break; | |
941 case T_LONG: | |
942 case T_DOUBLE: // The stack numbering is reversed from Java | |
943 // Since C arguments do not get reversed, the ordering for | |
944 // doubles on the stack must be opposite the Java convention | |
945 assert(sig_bt[i+1] == T_VOID, "missing Half" ); | |
946 regs[i].set2(VMRegImpl::stack2reg(stack)); | |
947 stack += 2; | |
948 break; | |
949 case T_VOID: regs[i].set_bad(); break; | |
950 default: | |
951 ShouldNotReachHere(); | |
952 break; | |
953 } | |
954 } | |
955 return stack; | |
956 } | |
957 | |
958 // A simple move of integer like type | |
959 static void simple_move32(MacroAssembler* masm, VMRegPair src, VMRegPair dst) { | |
960 if (src.first()->is_stack()) { | |
961 if (dst.first()->is_stack()) { | |
962 // stack to stack | |
963 // __ ld(FP, reg2offset(src.first()) + STACK_BIAS, L5); | |
964 // __ st(L5, SP, reg2offset(dst.first()) + STACK_BIAS); | |
304 | 965 __ movl2ptr(rax, Address(rbp, reg2offset_in(src.first()))); |
966 __ movptr(Address(rsp, reg2offset_out(dst.first())), rax); | |
0 | 967 } else { |
968 // stack to reg | |
304 | 969 __ movl2ptr(dst.first()->as_Register(), Address(rbp, reg2offset_in(src.first()))); |
0 | 970 } |
971 } else if (dst.first()->is_stack()) { | |
972 // reg to stack | |
304 | 973 // no need to sign extend on 64bit |
974 __ movptr(Address(rsp, reg2offset_out(dst.first())), src.first()->as_Register()); | |
0 | 975 } else { |
304 | 976 if (dst.first() != src.first()) { |
977 __ mov(dst.first()->as_Register(), src.first()->as_Register()); | |
978 } | |
0 | 979 } |
980 } | |
981 | |
982 // An oop arg. Must pass a handle not the oop itself | |
983 static void object_move(MacroAssembler* masm, | |
984 OopMap* map, | |
985 int oop_handle_offset, | |
986 int framesize_in_slots, | |
987 VMRegPair src, | |
988 VMRegPair dst, | |
989 bool is_receiver, | |
990 int* receiver_offset) { | |
991 | |
992 // Because of the calling conventions we know that src can be a | |
993 // register or a stack location. dst can only be a stack location. | |
994 | |
995 assert(dst.first()->is_stack(), "must be stack"); | |
996 // must pass a handle. First figure out the location we use as a handle | |
997 | |
998 if (src.first()->is_stack()) { | |
999 // Oop is already on the stack as an argument | |
1000 Register rHandle = rax; | |
1001 Label nil; | |
304 | 1002 __ xorptr(rHandle, rHandle); |
1003 __ cmpptr(Address(rbp, reg2offset_in(src.first())), (int32_t)NULL_WORD); | |
0 | 1004 __ jcc(Assembler::equal, nil); |
304 | 1005 __ lea(rHandle, Address(rbp, reg2offset_in(src.first()))); |
0 | 1006 __ bind(nil); |
304 | 1007 __ movptr(Address(rsp, reg2offset_out(dst.first())), rHandle); |
0 | 1008 |
1009 int offset_in_older_frame = src.first()->reg2stack() + SharedRuntime::out_preserve_stack_slots(); | |
1010 map->set_oop(VMRegImpl::stack2reg(offset_in_older_frame + framesize_in_slots)); | |
1011 if (is_receiver) { | |
1012 *receiver_offset = (offset_in_older_frame + framesize_in_slots) * VMRegImpl::stack_slot_size; | |
1013 } | |
1014 } else { | |
1015 // Oop is in an a register we must store it to the space we reserve | |
1016 // on the stack for oop_handles | |
1017 const Register rOop = src.first()->as_Register(); | |
1018 const Register rHandle = rax; | |
1019 int oop_slot = (rOop == rcx ? 0 : 1) * VMRegImpl::slots_per_word + oop_handle_offset; | |
1020 int offset = oop_slot*VMRegImpl::stack_slot_size; | |
1021 Label skip; | |
304 | 1022 __ movptr(Address(rsp, offset), rOop); |
0 | 1023 map->set_oop(VMRegImpl::stack2reg(oop_slot)); |
304 | 1024 __ xorptr(rHandle, rHandle); |
1025 __ cmpptr(rOop, (int32_t)NULL_WORD); | |
0 | 1026 __ jcc(Assembler::equal, skip); |
304 | 1027 __ lea(rHandle, Address(rsp, offset)); |
0 | 1028 __ bind(skip); |
1029 // Store the handle parameter | |
304 | 1030 __ movptr(Address(rsp, reg2offset_out(dst.first())), rHandle); |
0 | 1031 if (is_receiver) { |
1032 *receiver_offset = offset; | |
1033 } | |
1034 } | |
1035 } | |
1036 | |
1037 // A float arg may have to do float reg int reg conversion | |
1038 static void float_move(MacroAssembler* masm, VMRegPair src, VMRegPair dst) { | |
1039 assert(!src.second()->is_valid() && !dst.second()->is_valid(), "bad float_move"); | |
1040 | |
1041 // Because of the calling convention we know that src is either a stack location | |
1042 // or an xmm register. dst can only be a stack location. | |
1043 | |
1044 assert(dst.first()->is_stack() && ( src.first()->is_stack() || src.first()->is_XMMRegister()), "bad parameters"); | |
1045 | |
1046 if (src.first()->is_stack()) { | |
1047 __ movl(rax, Address(rbp, reg2offset_in(src.first()))); | |
304 | 1048 __ movptr(Address(rsp, reg2offset_out(dst.first())), rax); |
0 | 1049 } else { |
1050 // reg to stack | |
1051 __ movflt(Address(rsp, reg2offset_out(dst.first())), src.first()->as_XMMRegister()); | |
1052 } | |
1053 } | |
1054 | |
1055 // A long move | |
1056 static void long_move(MacroAssembler* masm, VMRegPair src, VMRegPair dst) { | |
1057 | |
1058 // The only legal possibility for a long_move VMRegPair is: | |
1059 // 1: two stack slots (possibly unaligned) | |
1060 // as neither the java or C calling convention will use registers | |
1061 // for longs. | |
1062 | |
1063 if (src.first()->is_stack() && dst.first()->is_stack()) { | |
1064 assert(src.second()->is_stack() && dst.second()->is_stack(), "must be all stack"); | |
304 | 1065 __ movptr(rax, Address(rbp, reg2offset_in(src.first()))); |
1066 NOT_LP64(__ movptr(rbx, Address(rbp, reg2offset_in(src.second())))); | |
1067 __ movptr(Address(rsp, reg2offset_out(dst.first())), rax); | |
1068 NOT_LP64(__ movptr(Address(rsp, reg2offset_out(dst.second())), rbx)); | |
0 | 1069 } else { |
1070 ShouldNotReachHere(); | |
1071 } | |
1072 } | |
1073 | |
1074 // A double move | |
1075 static void double_move(MacroAssembler* masm, VMRegPair src, VMRegPair dst) { | |
1076 | |
1077 // The only legal possibilities for a double_move VMRegPair are: | |
1078 // The painful thing here is that like long_move a VMRegPair might be | |
1079 | |
1080 // Because of the calling convention we know that src is either | |
1081 // 1: a single physical register (xmm registers only) | |
1082 // 2: two stack slots (possibly unaligned) | |
1083 // dst can only be a pair of stack slots. | |
1084 | |
1085 assert(dst.first()->is_stack() && (src.first()->is_XMMRegister() || src.first()->is_stack()), "bad args"); | |
1086 | |
1087 if (src.first()->is_stack()) { | |
1088 // source is all stack | |
304 | 1089 __ movptr(rax, Address(rbp, reg2offset_in(src.first()))); |
1090 NOT_LP64(__ movptr(rbx, Address(rbp, reg2offset_in(src.second())))); | |
1091 __ movptr(Address(rsp, reg2offset_out(dst.first())), rax); | |
1092 NOT_LP64(__ movptr(Address(rsp, reg2offset_out(dst.second())), rbx)); | |
0 | 1093 } else { |
1094 // reg to stack | |
1095 // No worries about stack alignment | |
1096 __ movdbl(Address(rsp, reg2offset_out(dst.first())), src.first()->as_XMMRegister()); | |
1097 } | |
1098 } | |
1099 | |
1100 | |
1101 void SharedRuntime::save_native_result(MacroAssembler *masm, BasicType ret_type, int frame_slots) { | |
1102 // We always ignore the frame_slots arg and just use the space just below frame pointer | |
1103 // which by this time is free to use | |
1104 switch (ret_type) { | |
1105 case T_FLOAT: | |
1106 __ fstp_s(Address(rbp, -wordSize)); | |
1107 break; | |
1108 case T_DOUBLE: | |
1109 __ fstp_d(Address(rbp, -2*wordSize)); | |
1110 break; | |
1111 case T_VOID: break; | |
1112 case T_LONG: | |
304 | 1113 __ movptr(Address(rbp, -wordSize), rax); |
1114 NOT_LP64(__ movptr(Address(rbp, -2*wordSize), rdx)); | |
0 | 1115 break; |
1116 default: { | |
304 | 1117 __ movptr(Address(rbp, -wordSize), rax); |
0 | 1118 } |
1119 } | |
1120 } | |
1121 | |
1122 void SharedRuntime::restore_native_result(MacroAssembler *masm, BasicType ret_type, int frame_slots) { | |
1123 // We always ignore the frame_slots arg and just use the space just below frame pointer | |
1124 // which by this time is free to use | |
1125 switch (ret_type) { | |
1126 case T_FLOAT: | |
1127 __ fld_s(Address(rbp, -wordSize)); | |
1128 break; | |
1129 case T_DOUBLE: | |
1130 __ fld_d(Address(rbp, -2*wordSize)); | |
1131 break; | |
1132 case T_LONG: | |
304 | 1133 __ movptr(rax, Address(rbp, -wordSize)); |
1134 NOT_LP64(__ movptr(rdx, Address(rbp, -2*wordSize))); | |
0 | 1135 break; |
1136 case T_VOID: break; | |
1137 default: { | |
304 | 1138 __ movptr(rax, Address(rbp, -wordSize)); |
0 | 1139 } |
1140 } | |
1141 } | |
1142 | |
1143 // --------------------------------------------------------------------------- | |
1144 // Generate a native wrapper for a given method. The method takes arguments | |
1145 // in the Java compiled code convention, marshals them to the native | |
1146 // convention (handlizes oops, etc), transitions to native, makes the call, | |
1147 // returns to java state (possibly blocking), unhandlizes any result and | |
1148 // returns. | |
1149 nmethod *SharedRuntime::generate_native_wrapper(MacroAssembler *masm, | |
1150 methodHandle method, | |
1151 int total_in_args, | |
1152 int comp_args_on_stack, | |
1153 BasicType *in_sig_bt, | |
1154 VMRegPair *in_regs, | |
1155 BasicType ret_type) { | |
1156 | |
1157 // An OopMap for lock (and class if static) | |
1158 OopMapSet *oop_maps = new OopMapSet(); | |
1159 | |
1160 // We have received a description of where all the java arg are located | |
1161 // on entry to the wrapper. We need to convert these args to where | |
1162 // the jni function will expect them. To figure out where they go | |
1163 // we convert the java signature to a C signature by inserting | |
1164 // the hidden arguments as arg[0] and possibly arg[1] (static method) | |
1165 | |
1166 int total_c_args = total_in_args + 1; | |
1167 if (method->is_static()) { | |
1168 total_c_args++; | |
1169 } | |
1170 | |
1171 BasicType* out_sig_bt = NEW_RESOURCE_ARRAY(BasicType, total_c_args); | |
1172 VMRegPair* out_regs = NEW_RESOURCE_ARRAY(VMRegPair, total_c_args); | |
1173 | |
1174 int argc = 0; | |
1175 out_sig_bt[argc++] = T_ADDRESS; | |
1176 if (method->is_static()) { | |
1177 out_sig_bt[argc++] = T_OBJECT; | |
1178 } | |
1179 | |
1180 int i; | |
1181 for (i = 0; i < total_in_args ; i++ ) { | |
1182 out_sig_bt[argc++] = in_sig_bt[i]; | |
1183 } | |
1184 | |
1185 | |
1186 // Now figure out where the args must be stored and how much stack space | |
1187 // they require (neglecting out_preserve_stack_slots but space for storing | |
1188 // the 1st six register arguments). It's weird see int_stk_helper. | |
1189 // | |
1190 int out_arg_slots; | |
1191 out_arg_slots = c_calling_convention(out_sig_bt, out_regs, total_c_args); | |
1192 | |
1193 // Compute framesize for the wrapper. We need to handlize all oops in | |
1194 // registers a max of 2 on x86. | |
1195 | |
1196 // Calculate the total number of stack slots we will need. | |
1197 | |
1198 // First count the abi requirement plus all of the outgoing args | |
1199 int stack_slots = SharedRuntime::out_preserve_stack_slots() + out_arg_slots; | |
1200 | |
1201 // Now the space for the inbound oop handle area | |
1202 | |
1203 int oop_handle_offset = stack_slots; | |
1204 stack_slots += 2*VMRegImpl::slots_per_word; | |
1205 | |
1206 // Now any space we need for handlizing a klass if static method | |
1207 | |
1208 int klass_slot_offset = 0; | |
1209 int klass_offset = -1; | |
1210 int lock_slot_offset = 0; | |
1211 bool is_static = false; | |
1212 int oop_temp_slot_offset = 0; | |
1213 | |
1214 if (method->is_static()) { | |
1215 klass_slot_offset = stack_slots; | |
1216 stack_slots += VMRegImpl::slots_per_word; | |
1217 klass_offset = klass_slot_offset * VMRegImpl::stack_slot_size; | |
1218 is_static = true; | |
1219 } | |
1220 | |
1221 // Plus a lock if needed | |
1222 | |
1223 if (method->is_synchronized()) { | |
1224 lock_slot_offset = stack_slots; | |
1225 stack_slots += VMRegImpl::slots_per_word; | |
1226 } | |
1227 | |
1228 // Now a place (+2) to save return values or temp during shuffling | |
1229 // + 2 for return address (which we own) and saved rbp, | |
1230 stack_slots += 4; | |
1231 | |
1232 // Ok The space we have allocated will look like: | |
1233 // | |
1234 // | |
1235 // FP-> | | | |
1236 // |---------------------| | |
1237 // | 2 slots for moves | | |
1238 // |---------------------| | |
1239 // | lock box (if sync) | | |
1240 // |---------------------| <- lock_slot_offset (-lock_slot_rbp_offset) | |
1241 // | klass (if static) | | |
1242 // |---------------------| <- klass_slot_offset | |
1243 // | oopHandle area | | |
1244 // |---------------------| <- oop_handle_offset (a max of 2 registers) | |
1245 // | outbound memory | | |
1246 // | based arguments | | |
1247 // | | | |
1248 // |---------------------| | |
1249 // | | | |
1250 // SP-> | out_preserved_slots | | |
1251 // | |
1252 // | |
1253 // **************************************************************************** | |
1254 // WARNING - on Windows Java Natives use pascal calling convention and pop the | |
1255 // arguments off of the stack after the jni call. Before the call we can use | |
1256 // instructions that are SP relative. After the jni call we switch to FP | |
1257 // relative instructions instead of re-adjusting the stack on windows. | |
1258 // **************************************************************************** | |
1259 | |
1260 | |
1261 // Now compute actual number of stack words we need rounding to make | |
1262 // stack properly aligned. | |
524
c9004fe53695
6792301: StackAlignmentInBytes not honored for compiled native methods
xlu
parents:
512
diff
changeset
|
1263 stack_slots = round_to(stack_slots, StackAlignmentInSlots); |
0 | 1264 |
1265 int stack_size = stack_slots * VMRegImpl::stack_slot_size; | |
1266 | |
1267 intptr_t start = (intptr_t)__ pc(); | |
1268 | |
1269 // First thing make an ic check to see if we should even be here | |
1270 | |
1271 // We are free to use all registers as temps without saving them and | |
1272 // restoring them except rbp,. rbp, is the only callee save register | |
1273 // as far as the interpreter and the compiler(s) are concerned. | |
1274 | |
1275 | |
1276 const Register ic_reg = rax; | |
1277 const Register receiver = rcx; | |
1278 Label hit; | |
1279 Label exception_pending; | |
1280 | |
1281 | |
1282 __ verify_oop(receiver); | |
304 | 1283 __ cmpptr(ic_reg, Address(receiver, oopDesc::klass_offset_in_bytes())); |
0 | 1284 __ jcc(Assembler::equal, hit); |
1285 | |
1286 __ jump(RuntimeAddress(SharedRuntime::get_ic_miss_stub())); | |
1287 | |
1288 // verified entry must be aligned for code patching. | |
1289 // and the first 5 bytes must be in the same cache line | |
1290 // if we align at 8 then we will be sure 5 bytes are in the same line | |
1291 __ align(8); | |
1292 | |
1293 __ bind(hit); | |
1294 | |
1295 int vep_offset = ((intptr_t)__ pc()) - start; | |
1296 | |
1297 #ifdef COMPILER1 | |
1298 if (InlineObjectHash && method->intrinsic_id() == vmIntrinsics::_hashCode) { | |
1299 // Object.hashCode can pull the hashCode from the header word | |
1300 // instead of doing a full VM transition once it's been computed. | |
1301 // Since hashCode is usually polymorphic at call sites we can't do | |
1302 // this optimization at the call site without a lot of work. | |
1303 Label slowCase; | |
1304 Register receiver = rcx; | |
1305 Register result = rax; | |
304 | 1306 __ movptr(result, Address(receiver, oopDesc::mark_offset_in_bytes())); |
0 | 1307 |
1308 // check if locked | |
304 | 1309 __ testptr(result, markOopDesc::unlocked_value); |
0 | 1310 __ jcc (Assembler::zero, slowCase); |
1311 | |
1312 if (UseBiasedLocking) { | |
1313 // Check if biased and fall through to runtime if so | |
304 | 1314 __ testptr(result, markOopDesc::biased_lock_bit_in_place); |
0 | 1315 __ jcc (Assembler::notZero, slowCase); |
1316 } | |
1317 | |
1318 // get hash | |
304 | 1319 __ andptr(result, markOopDesc::hash_mask_in_place); |
0 | 1320 // test if hashCode exists |
1321 __ jcc (Assembler::zero, slowCase); | |
304 | 1322 __ shrptr(result, markOopDesc::hash_shift); |
0 | 1323 __ ret(0); |
1324 __ bind (slowCase); | |
1325 } | |
1326 #endif // COMPILER1 | |
1327 | |
1328 // The instruction at the verified entry point must be 5 bytes or longer | |
1329 // because it can be patched on the fly by make_non_entrant. The stack bang | |
1330 // instruction fits that requirement. | |
1331 | |
1332 // Generate stack overflow check | |
1333 | |
1334 if (UseStackBanging) { | |
1335 __ bang_stack_with_offset(StackShadowPages*os::vm_page_size()); | |
1336 } else { | |
1337 // need a 5 byte instruction to allow MT safe patching to non-entrant | |
1338 __ fat_nop(); | |
1339 } | |
1340 | |
1341 // Generate a new frame for the wrapper. | |
1342 __ enter(); | |
1343 // -2 because return address is already present and so is saved rbp, | |
304 | 1344 __ subptr(rsp, stack_size - 2*wordSize); |
0 | 1345 |
1346 // Frame is now completed as far a size and linkage. | |
1347 | |
1348 int frame_complete = ((intptr_t)__ pc()) - start; | |
1349 | |
1350 // Calculate the difference between rsp and rbp,. We need to know it | |
1351 // after the native call because on windows Java Natives will pop | |
1352 // the arguments and it is painful to do rsp relative addressing | |
1353 // in a platform independent way. So after the call we switch to | |
1354 // rbp, relative addressing. | |
1355 | |
1356 int fp_adjustment = stack_size - 2*wordSize; | |
1357 | |
1358 #ifdef COMPILER2 | |
1359 // C2 may leave the stack dirty if not in SSE2+ mode | |
1360 if (UseSSE >= 2) { | |
1361 __ verify_FPU(0, "c2i transition should have clean FPU stack"); | |
1362 } else { | |
1363 __ empty_FPU_stack(); | |
1364 } | |
1365 #endif /* COMPILER2 */ | |
1366 | |
1367 // Compute the rbp, offset for any slots used after the jni call | |
1368 | |
1369 int lock_slot_rbp_offset = (lock_slot_offset*VMRegImpl::stack_slot_size) - fp_adjustment; | |
1370 int oop_temp_slot_rbp_offset = (oop_temp_slot_offset*VMRegImpl::stack_slot_size) - fp_adjustment; | |
1371 | |
1372 // We use rdi as a thread pointer because it is callee save and | |
1373 // if we load it once it is usable thru the entire wrapper | |
1374 const Register thread = rdi; | |
1375 | |
1376 // We use rsi as the oop handle for the receiver/klass | |
1377 // It is callee save so it survives the call to native | |
1378 | |
1379 const Register oop_handle_reg = rsi; | |
1380 | |
1381 __ get_thread(thread); | |
1382 | |
1383 | |
1384 // | |
1385 // We immediately shuffle the arguments so that any vm call we have to | |
1386 // make from here on out (sync slow path, jvmti, etc.) we will have | |
1387 // captured the oops from our caller and have a valid oopMap for | |
1388 // them. | |
1389 | |
1390 // ----------------- | |
1391 // The Grand Shuffle | |
1392 // | |
1393 // Natives require 1 or 2 extra arguments over the normal ones: the JNIEnv* | |
1394 // and, if static, the class mirror instead of a receiver. This pretty much | |
1395 // guarantees that register layout will not match (and x86 doesn't use reg | |
1396 // parms though amd does). Since the native abi doesn't use register args | |
1397 // and the java conventions does we don't have to worry about collisions. | |
1398 // All of our moved are reg->stack or stack->stack. | |
1399 // We ignore the extra arguments during the shuffle and handle them at the | |
1400 // last moment. The shuffle is described by the two calling convention | |
1401 // vectors we have in our possession. We simply walk the java vector to | |
1402 // get the source locations and the c vector to get the destinations. | |
1403 | |
1404 int c_arg = method->is_static() ? 2 : 1 ; | |
1405 | |
1406 // Record rsp-based slot for receiver on stack for non-static methods | |
1407 int receiver_offset = -1; | |
1408 | |
1409 // This is a trick. We double the stack slots so we can claim | |
1410 // the oops in the caller's frame. Since we are sure to have | |
1411 // more args than the caller doubling is enough to make | |
1412 // sure we can capture all the incoming oop args from the | |
1413 // caller. | |
1414 // | |
1415 OopMap* map = new OopMap(stack_slots * 2, 0 /* arg_slots*/); | |
1416 | |
1417 // Mark location of rbp, | |
1418 // map->set_callee_saved(VMRegImpl::stack2reg( stack_slots - 2), stack_slots * 2, 0, rbp->as_VMReg()); | |
1419 | |
1420 // We know that we only have args in at most two integer registers (rcx, rdx). So rax, rbx | |
1421 // Are free to temporaries if we have to do stack to steck moves. | |
1422 // All inbound args are referenced based on rbp, and all outbound args via rsp. | |
1423 | |
1424 for (i = 0; i < total_in_args ; i++, c_arg++ ) { | |
1425 switch (in_sig_bt[i]) { | |
1426 case T_ARRAY: | |
1427 case T_OBJECT: | |
1428 object_move(masm, map, oop_handle_offset, stack_slots, in_regs[i], out_regs[c_arg], | |
1429 ((i == 0) && (!is_static)), | |
1430 &receiver_offset); | |
1431 break; | |
1432 case T_VOID: | |
1433 break; | |
1434 | |
1435 case T_FLOAT: | |
1436 float_move(masm, in_regs[i], out_regs[c_arg]); | |
1437 break; | |
1438 | |
1439 case T_DOUBLE: | |
1440 assert( i + 1 < total_in_args && | |
1441 in_sig_bt[i + 1] == T_VOID && | |
1442 out_sig_bt[c_arg+1] == T_VOID, "bad arg list"); | |
1443 double_move(masm, in_regs[i], out_regs[c_arg]); | |
1444 break; | |
1445 | |
1446 case T_LONG : | |
1447 long_move(masm, in_regs[i], out_regs[c_arg]); | |
1448 break; | |
1449 | |
1450 case T_ADDRESS: assert(false, "found T_ADDRESS in java args"); | |
1451 | |
1452 default: | |
1453 simple_move32(masm, in_regs[i], out_regs[c_arg]); | |
1454 } | |
1455 } | |
1456 | |
1457 // Pre-load a static method's oop into rsi. Used both by locking code and | |
1458 // the normal JNI call code. | |
1459 if (method->is_static()) { | |
1460 | |
1461 // load opp into a register | |
1462 __ movoop(oop_handle_reg, JNIHandles::make_local(Klass::cast(method->method_holder())->java_mirror())); | |
1463 | |
1464 // Now handlize the static class mirror it's known not-null. | |
304 | 1465 __ movptr(Address(rsp, klass_offset), oop_handle_reg); |
0 | 1466 map->set_oop(VMRegImpl::stack2reg(klass_slot_offset)); |
1467 | |
1468 // Now get the handle | |
304 | 1469 __ lea(oop_handle_reg, Address(rsp, klass_offset)); |
0 | 1470 // store the klass handle as second argument |
304 | 1471 __ movptr(Address(rsp, wordSize), oop_handle_reg); |
0 | 1472 } |
1473 | |
1474 // Change state to native (we save the return address in the thread, since it might not | |
1475 // be pushed on the stack when we do a a stack traversal). It is enough that the pc() | |
1476 // points into the right code segment. It does not have to be the correct return pc. | |
1477 // We use the same pc/oopMap repeatedly when we call out | |
1478 | |
1479 intptr_t the_pc = (intptr_t) __ pc(); | |
1480 oop_maps->add_gc_map(the_pc - start, map); | |
1481 | |
1482 __ set_last_Java_frame(thread, rsp, noreg, (address)the_pc); | |
1483 | |
1484 | |
1485 // We have all of the arguments setup at this point. We must not touch any register | |
1486 // argument registers at this point (what if we save/restore them there are no oop? | |
1487 | |
1488 { | |
1489 SkipIfEqual skip_if(masm, &DTraceMethodProbes, 0); | |
1490 __ movoop(rax, JNIHandles::make_local(method())); | |
1491 __ call_VM_leaf( | |
1492 CAST_FROM_FN_PTR(address, SharedRuntime::dtrace_method_entry), | |
1493 thread, rax); | |
1494 } | |
1495 | |
610
70998f2e05ef
6805864: 4/3 Problem with jvmti->redefineClasses: some methods don't get redefined
dcubed
parents:
304
diff
changeset
|
1496 // RedefineClasses() tracing support for obsolete method entry |
70998f2e05ef
6805864: 4/3 Problem with jvmti->redefineClasses: some methods don't get redefined
dcubed
parents:
304
diff
changeset
|
1497 if (RC_TRACE_IN_RANGE(0x00001000, 0x00002000)) { |
70998f2e05ef
6805864: 4/3 Problem with jvmti->redefineClasses: some methods don't get redefined
dcubed
parents:
304
diff
changeset
|
1498 __ movoop(rax, JNIHandles::make_local(method())); |
70998f2e05ef
6805864: 4/3 Problem with jvmti->redefineClasses: some methods don't get redefined
dcubed
parents:
304
diff
changeset
|
1499 __ call_VM_leaf( |
70998f2e05ef
6805864: 4/3 Problem with jvmti->redefineClasses: some methods don't get redefined
dcubed
parents:
304
diff
changeset
|
1500 CAST_FROM_FN_PTR(address, SharedRuntime::rc_trace_method_entry), |
70998f2e05ef
6805864: 4/3 Problem with jvmti->redefineClasses: some methods don't get redefined
dcubed
parents:
304
diff
changeset
|
1501 thread, rax); |
70998f2e05ef
6805864: 4/3 Problem with jvmti->redefineClasses: some methods don't get redefined
dcubed
parents:
304
diff
changeset
|
1502 } |
70998f2e05ef
6805864: 4/3 Problem with jvmti->redefineClasses: some methods don't get redefined
dcubed
parents:
304
diff
changeset
|
1503 |
0 | 1504 // These are register definitions we need for locking/unlocking |
1505 const Register swap_reg = rax; // Must use rax, for cmpxchg instruction | |
1506 const Register obj_reg = rcx; // Will contain the oop | |
1507 const Register lock_reg = rdx; // Address of compiler lock object (BasicLock) | |
1508 | |
1509 Label slow_path_lock; | |
1510 Label lock_done; | |
1511 | |
1512 // Lock a synchronized method | |
1513 if (method->is_synchronized()) { | |
1514 | |
1515 | |
1516 const int mark_word_offset = BasicLock::displaced_header_offset_in_bytes(); | |
1517 | |
1518 // Get the handle (the 2nd argument) | |
304 | 1519 __ movptr(oop_handle_reg, Address(rsp, wordSize)); |
0 | 1520 |
1521 // Get address of the box | |
1522 | |
304 | 1523 __ lea(lock_reg, Address(rbp, lock_slot_rbp_offset)); |
0 | 1524 |
1525 // Load the oop from the handle | |
304 | 1526 __ movptr(obj_reg, Address(oop_handle_reg, 0)); |
0 | 1527 |
1528 if (UseBiasedLocking) { | |
1529 // Note that oop_handle_reg is trashed during this call | |
1530 __ biased_locking_enter(lock_reg, obj_reg, swap_reg, oop_handle_reg, false, lock_done, &slow_path_lock); | |
1531 } | |
1532 | |
1533 // Load immediate 1 into swap_reg %rax, | |
304 | 1534 __ movptr(swap_reg, 1); |
0 | 1535 |
1536 // Load (object->mark() | 1) into swap_reg %rax, | |
304 | 1537 __ orptr(swap_reg, Address(obj_reg, 0)); |
0 | 1538 |
1539 // Save (object->mark() | 1) into BasicLock's displaced header | |
304 | 1540 __ movptr(Address(lock_reg, mark_word_offset), swap_reg); |
0 | 1541 |
1542 if (os::is_MP()) { | |
1543 __ lock(); | |
1544 } | |
1545 | |
1546 // src -> dest iff dest == rax, else rax, <- dest | |
1547 // *obj_reg = lock_reg iff *obj_reg == rax, else rax, = *(obj_reg) | |
304 | 1548 __ cmpxchgptr(lock_reg, Address(obj_reg, 0)); |
0 | 1549 __ jcc(Assembler::equal, lock_done); |
1550 | |
1551 // Test if the oopMark is an obvious stack pointer, i.e., | |
1552 // 1) (mark & 3) == 0, and | |
1553 // 2) rsp <= mark < mark + os::pagesize() | |
1554 // These 3 tests can be done by evaluating the following | |
1555 // expression: ((mark - rsp) & (3 - os::vm_page_size())), | |
1556 // assuming both stack pointer and pagesize have their | |
1557 // least significant 2 bits clear. | |
1558 // NOTE: the oopMark is in swap_reg %rax, as the result of cmpxchg | |
1559 | |
304 | 1560 __ subptr(swap_reg, rsp); |
1561 __ andptr(swap_reg, 3 - os::vm_page_size()); | |
0 | 1562 |
1563 // Save the test result, for recursive case, the result is zero | |
304 | 1564 __ movptr(Address(lock_reg, mark_word_offset), swap_reg); |
0 | 1565 __ jcc(Assembler::notEqual, slow_path_lock); |
1566 // Slow path will re-enter here | |
1567 __ bind(lock_done); | |
1568 | |
1569 if (UseBiasedLocking) { | |
1570 // Re-fetch oop_handle_reg as we trashed it above | |
304 | 1571 __ movptr(oop_handle_reg, Address(rsp, wordSize)); |
0 | 1572 } |
1573 } | |
1574 | |
1575 | |
1576 // Finally just about ready to make the JNI call | |
1577 | |
1578 | |
1579 // get JNIEnv* which is first argument to native | |
1580 | |
304 | 1581 __ lea(rdx, Address(thread, in_bytes(JavaThread::jni_environment_offset()))); |
1582 __ movptr(Address(rsp, 0), rdx); | |
0 | 1583 |
1584 // Now set thread in native | |
1585 __ movl(Address(thread, JavaThread::thread_state_offset()), _thread_in_native); | |
1586 | |
1587 __ call(RuntimeAddress(method->native_function())); | |
1588 | |
1589 // WARNING - on Windows Java Natives use pascal calling convention and pop the | |
1590 // arguments off of the stack. We could just re-adjust the stack pointer here | |
1591 // and continue to do SP relative addressing but we instead switch to FP | |
1592 // relative addressing. | |
1593 | |
1594 // Unpack native results. | |
1595 switch (ret_type) { | |
1596 case T_BOOLEAN: __ c2bool(rax); break; | |
304 | 1597 case T_CHAR : __ andptr(rax, 0xFFFF); break; |
0 | 1598 case T_BYTE : __ sign_extend_byte (rax); break; |
1599 case T_SHORT : __ sign_extend_short(rax); break; | |
1600 case T_INT : /* nothing to do */ break; | |
1601 case T_DOUBLE : | |
1602 case T_FLOAT : | |
1603 // Result is in st0 we'll save as needed | |
1604 break; | |
1605 case T_ARRAY: // Really a handle | |
1606 case T_OBJECT: // Really a handle | |
1607 break; // can't de-handlize until after safepoint check | |
1608 case T_VOID: break; | |
1609 case T_LONG: break; | |
1610 default : ShouldNotReachHere(); | |
1611 } | |
1612 | |
1613 // Switch thread to "native transition" state before reading the synchronization state. | |
1614 // This additional state is necessary because reading and testing the synchronization | |
1615 // state is not atomic w.r.t. GC, as this scenario demonstrates: | |
1616 // Java thread A, in _thread_in_native state, loads _not_synchronized and is preempted. | |
1617 // VM thread changes sync state to synchronizing and suspends threads for GC. | |
1618 // Thread A is resumed to finish this native method, but doesn't block here since it | |
1619 // didn't see any synchronization is progress, and escapes. | |
1620 __ movl(Address(thread, JavaThread::thread_state_offset()), _thread_in_native_trans); | |
1621 | |
1622 if(os::is_MP()) { | |
1623 if (UseMembar) { | |
304 | 1624 // Force this write out before the read below |
1625 __ membar(Assembler::Membar_mask_bits( | |
1626 Assembler::LoadLoad | Assembler::LoadStore | | |
1627 Assembler::StoreLoad | Assembler::StoreStore)); | |
0 | 1628 } else { |
1629 // Write serialization page so VM thread can do a pseudo remote membar. | |
1630 // We use the current thread pointer to calculate a thread specific | |
1631 // offset to write to within the page. This minimizes bus traffic | |
1632 // due to cache line collision. | |
1633 __ serialize_memory(thread, rcx); | |
1634 } | |
1635 } | |
1636 | |
1637 if (AlwaysRestoreFPU) { | |
1638 // Make sure the control word is correct. | |
1639 __ fldcw(ExternalAddress(StubRoutines::addr_fpu_cntrl_wrd_std())); | |
1640 } | |
1641 | |
1642 // check for safepoint operation in progress and/or pending suspend requests | |
1643 { Label Continue; | |
1644 | |
1645 __ cmp32(ExternalAddress((address)SafepointSynchronize::address_of_state()), | |
1646 SafepointSynchronize::_not_synchronized); | |
1647 | |
1648 Label L; | |
1649 __ jcc(Assembler::notEqual, L); | |
1650 __ cmpl(Address(thread, JavaThread::suspend_flags_offset()), 0); | |
1651 __ jcc(Assembler::equal, Continue); | |
1652 __ bind(L); | |
1653 | |
1654 // Don't use call_VM as it will see a possible pending exception and forward it | |
1655 // and never return here preventing us from clearing _last_native_pc down below. | |
1656 // Also can't use call_VM_leaf either as it will check to see if rsi & rdi are | |
1657 // preserved and correspond to the bcp/locals pointers. So we do a runtime call | |
1658 // by hand. | |
1659 // | |
1660 save_native_result(masm, ret_type, stack_slots); | |
304 | 1661 __ push(thread); |
0 | 1662 __ call(RuntimeAddress(CAST_FROM_FN_PTR(address, |
1663 JavaThread::check_special_condition_for_native_trans))); | |
1664 __ increment(rsp, wordSize); | |
1665 // Restore any method result value | |
1666 restore_native_result(masm, ret_type, stack_slots); | |
1667 | |
1668 __ bind(Continue); | |
1669 } | |
1670 | |
1671 // change thread state | |
1672 __ movl(Address(thread, JavaThread::thread_state_offset()), _thread_in_Java); | |
1673 | |
1674 Label reguard; | |
1675 Label reguard_done; | |
1676 __ cmpl(Address(thread, JavaThread::stack_guard_state_offset()), JavaThread::stack_guard_yellow_disabled); | |
1677 __ jcc(Assembler::equal, reguard); | |
1678 | |
1679 // slow path reguard re-enters here | |
1680 __ bind(reguard_done); | |
1681 | |
1682 // Handle possible exception (will unlock if necessary) | |
1683 | |
1684 // native result if any is live | |
1685 | |
1686 // Unlock | |
1687 Label slow_path_unlock; | |
1688 Label unlock_done; | |
1689 if (method->is_synchronized()) { | |
1690 | |
1691 Label done; | |
1692 | |
1693 // Get locked oop from the handle we passed to jni | |
304 | 1694 __ movptr(obj_reg, Address(oop_handle_reg, 0)); |
0 | 1695 |
1696 if (UseBiasedLocking) { | |
1697 __ biased_locking_exit(obj_reg, rbx, done); | |
1698 } | |
1699 | |
1700 // Simple recursive lock? | |
1701 | |
304 | 1702 __ cmpptr(Address(rbp, lock_slot_rbp_offset), (int32_t)NULL_WORD); |
0 | 1703 __ jcc(Assembler::equal, done); |
1704 | |
1705 // Must save rax, if if it is live now because cmpxchg must use it | |
1706 if (ret_type != T_FLOAT && ret_type != T_DOUBLE && ret_type != T_VOID) { | |
1707 save_native_result(masm, ret_type, stack_slots); | |
1708 } | |
1709 | |
1710 // get old displaced header | |
304 | 1711 __ movptr(rbx, Address(rbp, lock_slot_rbp_offset)); |
0 | 1712 |
1713 // get address of the stack lock | |
304 | 1714 __ lea(rax, Address(rbp, lock_slot_rbp_offset)); |
0 | 1715 |
1716 // Atomic swap old header if oop still contains the stack lock | |
1717 if (os::is_MP()) { | |
1718 __ lock(); | |
1719 } | |
1720 | |
1721 // src -> dest iff dest == rax, else rax, <- dest | |
1722 // *obj_reg = rbx, iff *obj_reg == rax, else rax, = *(obj_reg) | |
304 | 1723 __ cmpxchgptr(rbx, Address(obj_reg, 0)); |
0 | 1724 __ jcc(Assembler::notEqual, slow_path_unlock); |
1725 | |
1726 // slow path re-enters here | |
1727 __ bind(unlock_done); | |
1728 if (ret_type != T_FLOAT && ret_type != T_DOUBLE && ret_type != T_VOID) { | |
1729 restore_native_result(masm, ret_type, stack_slots); | |
1730 } | |
1731 | |
1732 __ bind(done); | |
1733 | |
1734 } | |
1735 | |
1736 { | |
1737 SkipIfEqual skip_if(masm, &DTraceMethodProbes, 0); | |
1738 // Tell dtrace about this method exit | |
1739 save_native_result(masm, ret_type, stack_slots); | |
1740 __ movoop(rax, JNIHandles::make_local(method())); | |
1741 __ call_VM_leaf( | |
1742 CAST_FROM_FN_PTR(address, SharedRuntime::dtrace_method_exit), | |
1743 thread, rax); | |
1744 restore_native_result(masm, ret_type, stack_slots); | |
1745 } | |
1746 | |
1747 // We can finally stop using that last_Java_frame we setup ages ago | |
1748 | |
1749 __ reset_last_Java_frame(thread, false, true); | |
1750 | |
1751 // Unpack oop result | |
1752 if (ret_type == T_OBJECT || ret_type == T_ARRAY) { | |
1753 Label L; | |
304 | 1754 __ cmpptr(rax, (int32_t)NULL_WORD); |
0 | 1755 __ jcc(Assembler::equal, L); |
304 | 1756 __ movptr(rax, Address(rax, 0)); |
0 | 1757 __ bind(L); |
1758 __ verify_oop(rax); | |
1759 } | |
1760 | |
1761 // reset handle block | |
304 | 1762 __ movptr(rcx, Address(thread, JavaThread::active_handles_offset())); |
1763 | |
512
db4caa99ef11
6787106: Hotspot 32 bit build fails on platforms having different definitions for intptr_t & int32_t
xlu
parents:
304
diff
changeset
|
1764 __ movptr(Address(rcx, JNIHandleBlock::top_offset_in_bytes()), NULL_WORD); |
0 | 1765 |
1766 // Any exception pending? | |
304 | 1767 __ cmpptr(Address(thread, in_bytes(Thread::pending_exception_offset())), (int32_t)NULL_WORD); |
0 | 1768 __ jcc(Assembler::notEqual, exception_pending); |
1769 | |
1770 | |
1771 // no exception, we're almost done | |
1772 | |
1773 // check that only result value is on FPU stack | |
1774 __ verify_FPU(ret_type == T_FLOAT || ret_type == T_DOUBLE ? 1 : 0, "native_wrapper normal exit"); | |
1775 | |
1776 // Fixup floating pointer results so that result looks like a return from a compiled method | |
1777 if (ret_type == T_FLOAT) { | |
1778 if (UseSSE >= 1) { | |
1779 // Pop st0 and store as float and reload into xmm register | |
1780 __ fstp_s(Address(rbp, -4)); | |
1781 __ movflt(xmm0, Address(rbp, -4)); | |
1782 } | |
1783 } else if (ret_type == T_DOUBLE) { | |
1784 if (UseSSE >= 2) { | |
1785 // Pop st0 and store as double and reload into xmm register | |
1786 __ fstp_d(Address(rbp, -8)); | |
1787 __ movdbl(xmm0, Address(rbp, -8)); | |
1788 } | |
1789 } | |
1790 | |
1791 // Return | |
1792 | |
1793 __ leave(); | |
1794 __ ret(0); | |
1795 | |
1796 // Unexpected paths are out of line and go here | |
1797 | |
1798 // Slow path locking & unlocking | |
1799 if (method->is_synchronized()) { | |
1800 | |
1801 // BEGIN Slow path lock | |
1802 | |
1803 __ bind(slow_path_lock); | |
1804 | |
1805 // has last_Java_frame setup. No exceptions so do vanilla call not call_VM | |
1806 // args are (oop obj, BasicLock* lock, JavaThread* thread) | |
304 | 1807 __ push(thread); |
1808 __ push(lock_reg); | |
1809 __ push(obj_reg); | |
0 | 1810 __ call(RuntimeAddress(CAST_FROM_FN_PTR(address, SharedRuntime::complete_monitor_locking_C))); |
304 | 1811 __ addptr(rsp, 3*wordSize); |
0 | 1812 |
1813 #ifdef ASSERT | |
1814 { Label L; | |
304 | 1815 __ cmpptr(Address(thread, in_bytes(Thread::pending_exception_offset())), (int)NULL_WORD); |
0 | 1816 __ jcc(Assembler::equal, L); |
1817 __ stop("no pending exception allowed on exit from monitorenter"); | |
1818 __ bind(L); | |
1819 } | |
1820 #endif | |
1821 __ jmp(lock_done); | |
1822 | |
1823 // END Slow path lock | |
1824 | |
1825 // BEGIN Slow path unlock | |
1826 __ bind(slow_path_unlock); | |
1827 | |
1828 // Slow path unlock | |
1829 | |
1830 if (ret_type == T_FLOAT || ret_type == T_DOUBLE ) { | |
1831 save_native_result(masm, ret_type, stack_slots); | |
1832 } | |
1833 // Save pending exception around call to VM (which contains an EXCEPTION_MARK) | |
1834 | |
304 | 1835 __ pushptr(Address(thread, in_bytes(Thread::pending_exception_offset()))); |
512
db4caa99ef11
6787106: Hotspot 32 bit build fails on platforms having different definitions for intptr_t & int32_t
xlu
parents:
304
diff
changeset
|
1836 __ movptr(Address(thread, in_bytes(Thread::pending_exception_offset())), NULL_WORD); |
0 | 1837 |
1838 | |
1839 // should be a peal | |
1840 // +wordSize because of the push above | |
304 | 1841 __ lea(rax, Address(rbp, lock_slot_rbp_offset)); |
1842 __ push(rax); | |
1843 | |
1844 __ push(obj_reg); | |
0 | 1845 __ call(RuntimeAddress(CAST_FROM_FN_PTR(address, SharedRuntime::complete_monitor_unlocking_C))); |
304 | 1846 __ addptr(rsp, 2*wordSize); |
0 | 1847 #ifdef ASSERT |
1848 { | |
1849 Label L; | |
304 | 1850 __ cmpptr(Address(thread, in_bytes(Thread::pending_exception_offset())), (int32_t)NULL_WORD); |
0 | 1851 __ jcc(Assembler::equal, L); |
1852 __ stop("no pending exception allowed on exit complete_monitor_unlocking_C"); | |
1853 __ bind(L); | |
1854 } | |
1855 #endif /* ASSERT */ | |
1856 | |
304 | 1857 __ popptr(Address(thread, in_bytes(Thread::pending_exception_offset()))); |
0 | 1858 |
1859 if (ret_type == T_FLOAT || ret_type == T_DOUBLE ) { | |
1860 restore_native_result(masm, ret_type, stack_slots); | |
1861 } | |
1862 __ jmp(unlock_done); | |
1863 // END Slow path unlock | |
1864 | |
1865 } | |
1866 | |
1867 // SLOW PATH Reguard the stack if needed | |
1868 | |
1869 __ bind(reguard); | |
1870 save_native_result(masm, ret_type, stack_slots); | |
1871 { | |
1872 __ call(RuntimeAddress(CAST_FROM_FN_PTR(address, SharedRuntime::reguard_yellow_pages))); | |
1873 } | |
1874 restore_native_result(masm, ret_type, stack_slots); | |
1875 __ jmp(reguard_done); | |
1876 | |
1877 | |
1878 // BEGIN EXCEPTION PROCESSING | |
1879 | |
1880 // Forward the exception | |
1881 __ bind(exception_pending); | |
1882 | |
1883 // remove possible return value from FPU register stack | |
1884 __ empty_FPU_stack(); | |
1885 | |
1886 // pop our frame | |
1887 __ leave(); | |
1888 // and forward the exception | |
1889 __ jump(RuntimeAddress(StubRoutines::forward_exception_entry())); | |
1890 | |
1891 __ flush(); | |
1892 | |
1893 nmethod *nm = nmethod::new_native_nmethod(method, | |
1894 masm->code(), | |
1895 vep_offset, | |
1896 frame_complete, | |
1897 stack_slots / VMRegImpl::slots_per_word, | |
1898 (is_static ? in_ByteSize(klass_offset) : in_ByteSize(receiver_offset)), | |
1899 in_ByteSize(lock_slot_offset*VMRegImpl::stack_slot_size), | |
1900 oop_maps); | |
1901 return nm; | |
1902 | |
1903 } | |
1904 | |
116
018d5b58dd4f
6537506: Provide a mechanism for specifying Java-level USDT-like dtrace probes
kamg
parents:
0
diff
changeset
|
1905 #ifdef HAVE_DTRACE_H |
018d5b58dd4f
6537506: Provide a mechanism for specifying Java-level USDT-like dtrace probes
kamg
parents:
0
diff
changeset
|
1906 // --------------------------------------------------------------------------- |
018d5b58dd4f
6537506: Provide a mechanism for specifying Java-level USDT-like dtrace probes
kamg
parents:
0
diff
changeset
|
1907 // Generate a dtrace nmethod for a given signature. The method takes arguments |
018d5b58dd4f
6537506: Provide a mechanism for specifying Java-level USDT-like dtrace probes
kamg
parents:
0
diff
changeset
|
1908 // in the Java compiled code convention, marshals them to the native |
018d5b58dd4f
6537506: Provide a mechanism for specifying Java-level USDT-like dtrace probes
kamg
parents:
0
diff
changeset
|
1909 // abi and then leaves nops at the position you would expect to call a native |
018d5b58dd4f
6537506: Provide a mechanism for specifying Java-level USDT-like dtrace probes
kamg
parents:
0
diff
changeset
|
1910 // function. When the probe is enabled the nops are replaced with a trap |
018d5b58dd4f
6537506: Provide a mechanism for specifying Java-level USDT-like dtrace probes
kamg
parents:
0
diff
changeset
|
1911 // instruction that dtrace inserts and the trace will cause a notification |
018d5b58dd4f
6537506: Provide a mechanism for specifying Java-level USDT-like dtrace probes
kamg
parents:
0
diff
changeset
|
1912 // to dtrace. |
018d5b58dd4f
6537506: Provide a mechanism for specifying Java-level USDT-like dtrace probes
kamg
parents:
0
diff
changeset
|
1913 // |
018d5b58dd4f
6537506: Provide a mechanism for specifying Java-level USDT-like dtrace probes
kamg
parents:
0
diff
changeset
|
1914 // The probes are only able to take primitive types and java/lang/String as |
018d5b58dd4f
6537506: Provide a mechanism for specifying Java-level USDT-like dtrace probes
kamg
parents:
0
diff
changeset
|
1915 // arguments. No other java types are allowed. Strings are converted to utf8 |
018d5b58dd4f
6537506: Provide a mechanism for specifying Java-level USDT-like dtrace probes
kamg
parents:
0
diff
changeset
|
1916 // strings so that from dtrace point of view java strings are converted to C |
018d5b58dd4f
6537506: Provide a mechanism for specifying Java-level USDT-like dtrace probes
kamg
parents:
0
diff
changeset
|
1917 // strings. There is an arbitrary fixed limit on the total space that a method |
018d5b58dd4f
6537506: Provide a mechanism for specifying Java-level USDT-like dtrace probes
kamg
parents:
0
diff
changeset
|
1918 // can use for converting the strings. (256 chars per string in the signature). |
018d5b58dd4f
6537506: Provide a mechanism for specifying Java-level USDT-like dtrace probes
kamg
parents:
0
diff
changeset
|
1919 // So any java string larger then this is truncated. |
018d5b58dd4f
6537506: Provide a mechanism for specifying Java-level USDT-like dtrace probes
kamg
parents:
0
diff
changeset
|
1920 |
018d5b58dd4f
6537506: Provide a mechanism for specifying Java-level USDT-like dtrace probes
kamg
parents:
0
diff
changeset
|
1921 nmethod *SharedRuntime::generate_dtrace_nmethod( |
018d5b58dd4f
6537506: Provide a mechanism for specifying Java-level USDT-like dtrace probes
kamg
parents:
0
diff
changeset
|
1922 MacroAssembler *masm, methodHandle method) { |
018d5b58dd4f
6537506: Provide a mechanism for specifying Java-level USDT-like dtrace probes
kamg
parents:
0
diff
changeset
|
1923 |
018d5b58dd4f
6537506: Provide a mechanism for specifying Java-level USDT-like dtrace probes
kamg
parents:
0
diff
changeset
|
1924 // generate_dtrace_nmethod is guarded by a mutex so we are sure to |
018d5b58dd4f
6537506: Provide a mechanism for specifying Java-level USDT-like dtrace probes
kamg
parents:
0
diff
changeset
|
1925 // be single threaded in this method. |
018d5b58dd4f
6537506: Provide a mechanism for specifying Java-level USDT-like dtrace probes
kamg
parents:
0
diff
changeset
|
1926 assert(AdapterHandlerLibrary_lock->owned_by_self(), "must be"); |
018d5b58dd4f
6537506: Provide a mechanism for specifying Java-level USDT-like dtrace probes
kamg
parents:
0
diff
changeset
|
1927 |
018d5b58dd4f
6537506: Provide a mechanism for specifying Java-level USDT-like dtrace probes
kamg
parents:
0
diff
changeset
|
1928 // Fill in the signature array, for the calling-convention call. |
018d5b58dd4f
6537506: Provide a mechanism for specifying Java-level USDT-like dtrace probes
kamg
parents:
0
diff
changeset
|
1929 int total_args_passed = method->size_of_parameters(); |
018d5b58dd4f
6537506: Provide a mechanism for specifying Java-level USDT-like dtrace probes
kamg
parents:
0
diff
changeset
|
1930 |
018d5b58dd4f
6537506: Provide a mechanism for specifying Java-level USDT-like dtrace probes
kamg
parents:
0
diff
changeset
|
1931 BasicType* in_sig_bt = NEW_RESOURCE_ARRAY(BasicType, total_args_passed); |
018d5b58dd4f
6537506: Provide a mechanism for specifying Java-level USDT-like dtrace probes
kamg
parents:
0
diff
changeset
|
1932 VMRegPair *in_regs = NEW_RESOURCE_ARRAY(VMRegPair, total_args_passed); |
018d5b58dd4f
6537506: Provide a mechanism for specifying Java-level USDT-like dtrace probes
kamg
parents:
0
diff
changeset
|
1933 |
018d5b58dd4f
6537506: Provide a mechanism for specifying Java-level USDT-like dtrace probes
kamg
parents:
0
diff
changeset
|
1934 // The signature we are going to use for the trap that dtrace will see |
018d5b58dd4f
6537506: Provide a mechanism for specifying Java-level USDT-like dtrace probes
kamg
parents:
0
diff
changeset
|
1935 // java/lang/String is converted. We drop "this" and any other object |
018d5b58dd4f
6537506: Provide a mechanism for specifying Java-level USDT-like dtrace probes
kamg
parents:
0
diff
changeset
|
1936 // is converted to NULL. (A one-slot java/lang/Long object reference |
018d5b58dd4f
6537506: Provide a mechanism for specifying Java-level USDT-like dtrace probes
kamg
parents:
0
diff
changeset
|
1937 // is converted to a two-slot long, which is why we double the allocation). |
018d5b58dd4f
6537506: Provide a mechanism for specifying Java-level USDT-like dtrace probes
kamg
parents:
0
diff
changeset
|
1938 BasicType* out_sig_bt = NEW_RESOURCE_ARRAY(BasicType, total_args_passed * 2); |
018d5b58dd4f
6537506: Provide a mechanism for specifying Java-level USDT-like dtrace probes
kamg
parents:
0
diff
changeset
|
1939 VMRegPair* out_regs = NEW_RESOURCE_ARRAY(VMRegPair, total_args_passed * 2); |
018d5b58dd4f
6537506: Provide a mechanism for specifying Java-level USDT-like dtrace probes
kamg
parents:
0
diff
changeset
|
1940 |
018d5b58dd4f
6537506: Provide a mechanism for specifying Java-level USDT-like dtrace probes
kamg
parents:
0
diff
changeset
|
1941 int i=0; |
018d5b58dd4f
6537506: Provide a mechanism for specifying Java-level USDT-like dtrace probes
kamg
parents:
0
diff
changeset
|
1942 int total_strings = 0; |
018d5b58dd4f
6537506: Provide a mechanism for specifying Java-level USDT-like dtrace probes
kamg
parents:
0
diff
changeset
|
1943 int first_arg_to_pass = 0; |
018d5b58dd4f
6537506: Provide a mechanism for specifying Java-level USDT-like dtrace probes
kamg
parents:
0
diff
changeset
|
1944 int total_c_args = 0; |
018d5b58dd4f
6537506: Provide a mechanism for specifying Java-level USDT-like dtrace probes
kamg
parents:
0
diff
changeset
|
1945 |
018d5b58dd4f
6537506: Provide a mechanism for specifying Java-level USDT-like dtrace probes
kamg
parents:
0
diff
changeset
|
1946 if( !method->is_static() ) { // Pass in receiver first |
018d5b58dd4f
6537506: Provide a mechanism for specifying Java-level USDT-like dtrace probes
kamg
parents:
0
diff
changeset
|
1947 in_sig_bt[i++] = T_OBJECT; |
018d5b58dd4f
6537506: Provide a mechanism for specifying Java-level USDT-like dtrace probes
kamg
parents:
0
diff
changeset
|
1948 first_arg_to_pass = 1; |
018d5b58dd4f
6537506: Provide a mechanism for specifying Java-level USDT-like dtrace probes
kamg
parents:
0
diff
changeset
|
1949 } |
018d5b58dd4f
6537506: Provide a mechanism for specifying Java-level USDT-like dtrace probes
kamg
parents:
0
diff
changeset
|
1950 |
018d5b58dd4f
6537506: Provide a mechanism for specifying Java-level USDT-like dtrace probes
kamg
parents:
0
diff
changeset
|
1951 // We need to convert the java args to where a native (non-jni) function |
018d5b58dd4f
6537506: Provide a mechanism for specifying Java-level USDT-like dtrace probes
kamg
parents:
0
diff
changeset
|
1952 // would expect them. To figure out where they go we convert the java |
018d5b58dd4f
6537506: Provide a mechanism for specifying Java-level USDT-like dtrace probes
kamg
parents:
0
diff
changeset
|
1953 // signature to a C signature. |
018d5b58dd4f
6537506: Provide a mechanism for specifying Java-level USDT-like dtrace probes
kamg
parents:
0
diff
changeset
|
1954 |
018d5b58dd4f
6537506: Provide a mechanism for specifying Java-level USDT-like dtrace probes
kamg
parents:
0
diff
changeset
|
1955 SignatureStream ss(method->signature()); |
018d5b58dd4f
6537506: Provide a mechanism for specifying Java-level USDT-like dtrace probes
kamg
parents:
0
diff
changeset
|
1956 for ( ; !ss.at_return_type(); ss.next()) { |
018d5b58dd4f
6537506: Provide a mechanism for specifying Java-level USDT-like dtrace probes
kamg
parents:
0
diff
changeset
|
1957 BasicType bt = ss.type(); |
018d5b58dd4f
6537506: Provide a mechanism for specifying Java-level USDT-like dtrace probes
kamg
parents:
0
diff
changeset
|
1958 in_sig_bt[i++] = bt; // Collect remaining bits of signature |
018d5b58dd4f
6537506: Provide a mechanism for specifying Java-level USDT-like dtrace probes
kamg
parents:
0
diff
changeset
|
1959 out_sig_bt[total_c_args++] = bt; |
018d5b58dd4f
6537506: Provide a mechanism for specifying Java-level USDT-like dtrace probes
kamg
parents:
0
diff
changeset
|
1960 if( bt == T_OBJECT) { |
018d5b58dd4f
6537506: Provide a mechanism for specifying Java-level USDT-like dtrace probes
kamg
parents:
0
diff
changeset
|
1961 symbolOop s = ss.as_symbol_or_null(); |
018d5b58dd4f
6537506: Provide a mechanism for specifying Java-level USDT-like dtrace probes
kamg
parents:
0
diff
changeset
|
1962 if (s == vmSymbols::java_lang_String()) { |
018d5b58dd4f
6537506: Provide a mechanism for specifying Java-level USDT-like dtrace probes
kamg
parents:
0
diff
changeset
|
1963 total_strings++; |
018d5b58dd4f
6537506: Provide a mechanism for specifying Java-level USDT-like dtrace probes
kamg
parents:
0
diff
changeset
|
1964 out_sig_bt[total_c_args-1] = T_ADDRESS; |
018d5b58dd4f
6537506: Provide a mechanism for specifying Java-level USDT-like dtrace probes
kamg
parents:
0
diff
changeset
|
1965 } else if (s == vmSymbols::java_lang_Boolean() || |
018d5b58dd4f
6537506: Provide a mechanism for specifying Java-level USDT-like dtrace probes
kamg
parents:
0
diff
changeset
|
1966 s == vmSymbols::java_lang_Character() || |
018d5b58dd4f
6537506: Provide a mechanism for specifying Java-level USDT-like dtrace probes
kamg
parents:
0
diff
changeset
|
1967 s == vmSymbols::java_lang_Byte() || |
018d5b58dd4f
6537506: Provide a mechanism for specifying Java-level USDT-like dtrace probes
kamg
parents:
0
diff
changeset
|
1968 s == vmSymbols::java_lang_Short() || |
018d5b58dd4f
6537506: Provide a mechanism for specifying Java-level USDT-like dtrace probes
kamg
parents:
0
diff
changeset
|
1969 s == vmSymbols::java_lang_Integer() || |
018d5b58dd4f
6537506: Provide a mechanism for specifying Java-level USDT-like dtrace probes
kamg
parents:
0
diff
changeset
|
1970 s == vmSymbols::java_lang_Float()) { |
018d5b58dd4f
6537506: Provide a mechanism for specifying Java-level USDT-like dtrace probes
kamg
parents:
0
diff
changeset
|
1971 out_sig_bt[total_c_args-1] = T_INT; |
018d5b58dd4f
6537506: Provide a mechanism for specifying Java-level USDT-like dtrace probes
kamg
parents:
0
diff
changeset
|
1972 } else if (s == vmSymbols::java_lang_Long() || |
018d5b58dd4f
6537506: Provide a mechanism for specifying Java-level USDT-like dtrace probes
kamg
parents:
0
diff
changeset
|
1973 s == vmSymbols::java_lang_Double()) { |
018d5b58dd4f
6537506: Provide a mechanism for specifying Java-level USDT-like dtrace probes
kamg
parents:
0
diff
changeset
|
1974 out_sig_bt[total_c_args-1] = T_LONG; |
018d5b58dd4f
6537506: Provide a mechanism for specifying Java-level USDT-like dtrace probes
kamg
parents:
0
diff
changeset
|
1975 out_sig_bt[total_c_args++] = T_VOID; |
018d5b58dd4f
6537506: Provide a mechanism for specifying Java-level USDT-like dtrace probes
kamg
parents:
0
diff
changeset
|
1976 } |
018d5b58dd4f
6537506: Provide a mechanism for specifying Java-level USDT-like dtrace probes
kamg
parents:
0
diff
changeset
|
1977 } else if ( bt == T_LONG || bt == T_DOUBLE ) { |
018d5b58dd4f
6537506: Provide a mechanism for specifying Java-level USDT-like dtrace probes
kamg
parents:
0
diff
changeset
|
1978 in_sig_bt[i++] = T_VOID; // Longs & doubles take 2 Java slots |
018d5b58dd4f
6537506: Provide a mechanism for specifying Java-level USDT-like dtrace probes
kamg
parents:
0
diff
changeset
|
1979 out_sig_bt[total_c_args++] = T_VOID; |
018d5b58dd4f
6537506: Provide a mechanism for specifying Java-level USDT-like dtrace probes
kamg
parents:
0
diff
changeset
|
1980 } |
018d5b58dd4f
6537506: Provide a mechanism for specifying Java-level USDT-like dtrace probes
kamg
parents:
0
diff
changeset
|
1981 } |
018d5b58dd4f
6537506: Provide a mechanism for specifying Java-level USDT-like dtrace probes
kamg
parents:
0
diff
changeset
|
1982 |
018d5b58dd4f
6537506: Provide a mechanism for specifying Java-level USDT-like dtrace probes
kamg
parents:
0
diff
changeset
|
1983 assert(i==total_args_passed, "validly parsed signature"); |
018d5b58dd4f
6537506: Provide a mechanism for specifying Java-level USDT-like dtrace probes
kamg
parents:
0
diff
changeset
|
1984 |
018d5b58dd4f
6537506: Provide a mechanism for specifying Java-level USDT-like dtrace probes
kamg
parents:
0
diff
changeset
|
1985 // Now get the compiled-Java layout as input arguments |
018d5b58dd4f
6537506: Provide a mechanism for specifying Java-level USDT-like dtrace probes
kamg
parents:
0
diff
changeset
|
1986 int comp_args_on_stack; |
018d5b58dd4f
6537506: Provide a mechanism for specifying Java-level USDT-like dtrace probes
kamg
parents:
0
diff
changeset
|
1987 comp_args_on_stack = SharedRuntime::java_calling_convention( |
018d5b58dd4f
6537506: Provide a mechanism for specifying Java-level USDT-like dtrace probes
kamg
parents:
0
diff
changeset
|
1988 in_sig_bt, in_regs, total_args_passed, false); |
018d5b58dd4f
6537506: Provide a mechanism for specifying Java-level USDT-like dtrace probes
kamg
parents:
0
diff
changeset
|
1989 |
018d5b58dd4f
6537506: Provide a mechanism for specifying Java-level USDT-like dtrace probes
kamg
parents:
0
diff
changeset
|
1990 // Now figure out where the args must be stored and how much stack space |
018d5b58dd4f
6537506: Provide a mechanism for specifying Java-level USDT-like dtrace probes
kamg
parents:
0
diff
changeset
|
1991 // they require (neglecting out_preserve_stack_slots). |
018d5b58dd4f
6537506: Provide a mechanism for specifying Java-level USDT-like dtrace probes
kamg
parents:
0
diff
changeset
|
1992 |
018d5b58dd4f
6537506: Provide a mechanism for specifying Java-level USDT-like dtrace probes
kamg
parents:
0
diff
changeset
|
1993 int out_arg_slots; |
018d5b58dd4f
6537506: Provide a mechanism for specifying Java-level USDT-like dtrace probes
kamg
parents:
0
diff
changeset
|
1994 out_arg_slots = c_calling_convention(out_sig_bt, out_regs, total_c_args); |
018d5b58dd4f
6537506: Provide a mechanism for specifying Java-level USDT-like dtrace probes
kamg
parents:
0
diff
changeset
|
1995 |
018d5b58dd4f
6537506: Provide a mechanism for specifying Java-level USDT-like dtrace probes
kamg
parents:
0
diff
changeset
|
1996 // Calculate the total number of stack slots we will need. |
018d5b58dd4f
6537506: Provide a mechanism for specifying Java-level USDT-like dtrace probes
kamg
parents:
0
diff
changeset
|
1997 |
018d5b58dd4f
6537506: Provide a mechanism for specifying Java-level USDT-like dtrace probes
kamg
parents:
0
diff
changeset
|
1998 // First count the abi requirement plus all of the outgoing args |
018d5b58dd4f
6537506: Provide a mechanism for specifying Java-level USDT-like dtrace probes
kamg
parents:
0
diff
changeset
|
1999 int stack_slots = SharedRuntime::out_preserve_stack_slots() + out_arg_slots; |
018d5b58dd4f
6537506: Provide a mechanism for specifying Java-level USDT-like dtrace probes
kamg
parents:
0
diff
changeset
|
2000 |
018d5b58dd4f
6537506: Provide a mechanism for specifying Java-level USDT-like dtrace probes
kamg
parents:
0
diff
changeset
|
2001 // Now space for the string(s) we must convert |
018d5b58dd4f
6537506: Provide a mechanism for specifying Java-level USDT-like dtrace probes
kamg
parents:
0
diff
changeset
|
2002 |
018d5b58dd4f
6537506: Provide a mechanism for specifying Java-level USDT-like dtrace probes
kamg
parents:
0
diff
changeset
|
2003 int* string_locs = NEW_RESOURCE_ARRAY(int, total_strings + 1); |
018d5b58dd4f
6537506: Provide a mechanism for specifying Java-level USDT-like dtrace probes
kamg
parents:
0
diff
changeset
|
2004 for (i = 0; i < total_strings ; i++) { |
018d5b58dd4f
6537506: Provide a mechanism for specifying Java-level USDT-like dtrace probes
kamg
parents:
0
diff
changeset
|
2005 string_locs[i] = stack_slots; |
018d5b58dd4f
6537506: Provide a mechanism for specifying Java-level USDT-like dtrace probes
kamg
parents:
0
diff
changeset
|
2006 stack_slots += max_dtrace_string_size / VMRegImpl::stack_slot_size; |
018d5b58dd4f
6537506: Provide a mechanism for specifying Java-level USDT-like dtrace probes
kamg
parents:
0
diff
changeset
|
2007 } |
018d5b58dd4f
6537506: Provide a mechanism for specifying Java-level USDT-like dtrace probes
kamg
parents:
0
diff
changeset
|
2008 |
018d5b58dd4f
6537506: Provide a mechanism for specifying Java-level USDT-like dtrace probes
kamg
parents:
0
diff
changeset
|
2009 // + 2 for return address (which we own) and saved rbp, |
018d5b58dd4f
6537506: Provide a mechanism for specifying Java-level USDT-like dtrace probes
kamg
parents:
0
diff
changeset
|
2010 |
018d5b58dd4f
6537506: Provide a mechanism for specifying Java-level USDT-like dtrace probes
kamg
parents:
0
diff
changeset
|
2011 stack_slots += 2; |
018d5b58dd4f
6537506: Provide a mechanism for specifying Java-level USDT-like dtrace probes
kamg
parents:
0
diff
changeset
|
2012 |
018d5b58dd4f
6537506: Provide a mechanism for specifying Java-level USDT-like dtrace probes
kamg
parents:
0
diff
changeset
|
2013 // Ok The space we have allocated will look like: |
018d5b58dd4f
6537506: Provide a mechanism for specifying Java-level USDT-like dtrace probes
kamg
parents:
0
diff
changeset
|
2014 // |
018d5b58dd4f
6537506: Provide a mechanism for specifying Java-level USDT-like dtrace probes
kamg
parents:
0
diff
changeset
|
2015 // |
018d5b58dd4f
6537506: Provide a mechanism for specifying Java-level USDT-like dtrace probes
kamg
parents:
0
diff
changeset
|
2016 // FP-> | | |
018d5b58dd4f
6537506: Provide a mechanism for specifying Java-level USDT-like dtrace probes
kamg
parents:
0
diff
changeset
|
2017 // |---------------------| |
018d5b58dd4f
6537506: Provide a mechanism for specifying Java-level USDT-like dtrace probes
kamg
parents:
0
diff
changeset
|
2018 // | string[n] | |
018d5b58dd4f
6537506: Provide a mechanism for specifying Java-level USDT-like dtrace probes
kamg
parents:
0
diff
changeset
|
2019 // |---------------------| <- string_locs[n] |
018d5b58dd4f
6537506: Provide a mechanism for specifying Java-level USDT-like dtrace probes
kamg
parents:
0
diff
changeset
|
2020 // | string[n-1] | |
018d5b58dd4f
6537506: Provide a mechanism for specifying Java-level USDT-like dtrace probes
kamg
parents:
0
diff
changeset
|
2021 // |---------------------| <- string_locs[n-1] |
018d5b58dd4f
6537506: Provide a mechanism for specifying Java-level USDT-like dtrace probes
kamg
parents:
0
diff
changeset
|
2022 // | ... | |
018d5b58dd4f
6537506: Provide a mechanism for specifying Java-level USDT-like dtrace probes
kamg
parents:
0
diff
changeset
|
2023 // | ... | |
018d5b58dd4f
6537506: Provide a mechanism for specifying Java-level USDT-like dtrace probes
kamg
parents:
0
diff
changeset
|
2024 // |---------------------| <- string_locs[1] |
018d5b58dd4f
6537506: Provide a mechanism for specifying Java-level USDT-like dtrace probes
kamg
parents:
0
diff
changeset
|
2025 // | string[0] | |
018d5b58dd4f
6537506: Provide a mechanism for specifying Java-level USDT-like dtrace probes
kamg
parents:
0
diff
changeset
|
2026 // |---------------------| <- string_locs[0] |
018d5b58dd4f
6537506: Provide a mechanism for specifying Java-level USDT-like dtrace probes
kamg
parents:
0
diff
changeset
|
2027 // | outbound memory | |
018d5b58dd4f
6537506: Provide a mechanism for specifying Java-level USDT-like dtrace probes
kamg
parents:
0
diff
changeset
|
2028 // | based arguments | |
018d5b58dd4f
6537506: Provide a mechanism for specifying Java-level USDT-like dtrace probes
kamg
parents:
0
diff
changeset
|
2029 // | | |
018d5b58dd4f
6537506: Provide a mechanism for specifying Java-level USDT-like dtrace probes
kamg
parents:
0
diff
changeset
|
2030 // |---------------------| |
018d5b58dd4f
6537506: Provide a mechanism for specifying Java-level USDT-like dtrace probes
kamg
parents:
0
diff
changeset
|
2031 // | | |
018d5b58dd4f
6537506: Provide a mechanism for specifying Java-level USDT-like dtrace probes
kamg
parents:
0
diff
changeset
|
2032 // SP-> | out_preserved_slots | |
018d5b58dd4f
6537506: Provide a mechanism for specifying Java-level USDT-like dtrace probes
kamg
parents:
0
diff
changeset
|
2033 // |
018d5b58dd4f
6537506: Provide a mechanism for specifying Java-level USDT-like dtrace probes
kamg
parents:
0
diff
changeset
|
2034 // |
018d5b58dd4f
6537506: Provide a mechanism for specifying Java-level USDT-like dtrace probes
kamg
parents:
0
diff
changeset
|
2035 |
018d5b58dd4f
6537506: Provide a mechanism for specifying Java-level USDT-like dtrace probes
kamg
parents:
0
diff
changeset
|
2036 // Now compute actual number of stack words we need rounding to make |
018d5b58dd4f
6537506: Provide a mechanism for specifying Java-level USDT-like dtrace probes
kamg
parents:
0
diff
changeset
|
2037 // stack properly aligned. |
018d5b58dd4f
6537506: Provide a mechanism for specifying Java-level USDT-like dtrace probes
kamg
parents:
0
diff
changeset
|
2038 stack_slots = round_to(stack_slots, 2 * VMRegImpl::slots_per_word); |
018d5b58dd4f
6537506: Provide a mechanism for specifying Java-level USDT-like dtrace probes
kamg
parents:
0
diff
changeset
|
2039 |
018d5b58dd4f
6537506: Provide a mechanism for specifying Java-level USDT-like dtrace probes
kamg
parents:
0
diff
changeset
|
2040 int stack_size = stack_slots * VMRegImpl::stack_slot_size; |
018d5b58dd4f
6537506: Provide a mechanism for specifying Java-level USDT-like dtrace probes
kamg
parents:
0
diff
changeset
|
2041 |
018d5b58dd4f
6537506: Provide a mechanism for specifying Java-level USDT-like dtrace probes
kamg
parents:
0
diff
changeset
|
2042 intptr_t start = (intptr_t)__ pc(); |
018d5b58dd4f
6537506: Provide a mechanism for specifying Java-level USDT-like dtrace probes
kamg
parents:
0
diff
changeset
|
2043 |
018d5b58dd4f
6537506: Provide a mechanism for specifying Java-level USDT-like dtrace probes
kamg
parents:
0
diff
changeset
|
2044 // First thing make an ic check to see if we should even be here |
018d5b58dd4f
6537506: Provide a mechanism for specifying Java-level USDT-like dtrace probes
kamg
parents:
0
diff
changeset
|
2045 |
018d5b58dd4f
6537506: Provide a mechanism for specifying Java-level USDT-like dtrace probes
kamg
parents:
0
diff
changeset
|
2046 // We are free to use all registers as temps without saving them and |
018d5b58dd4f
6537506: Provide a mechanism for specifying Java-level USDT-like dtrace probes
kamg
parents:
0
diff
changeset
|
2047 // restoring them except rbp. rbp, is the only callee save register |
018d5b58dd4f
6537506: Provide a mechanism for specifying Java-level USDT-like dtrace probes
kamg
parents:
0
diff
changeset
|
2048 // as far as the interpreter and the compiler(s) are concerned. |
018d5b58dd4f
6537506: Provide a mechanism for specifying Java-level USDT-like dtrace probes
kamg
parents:
0
diff
changeset
|
2049 |
018d5b58dd4f
6537506: Provide a mechanism for specifying Java-level USDT-like dtrace probes
kamg
parents:
0
diff
changeset
|
2050 const Register ic_reg = rax; |
018d5b58dd4f
6537506: Provide a mechanism for specifying Java-level USDT-like dtrace probes
kamg
parents:
0
diff
changeset
|
2051 const Register receiver = rcx; |
018d5b58dd4f
6537506: Provide a mechanism for specifying Java-level USDT-like dtrace probes
kamg
parents:
0
diff
changeset
|
2052 Label hit; |
018d5b58dd4f
6537506: Provide a mechanism for specifying Java-level USDT-like dtrace probes
kamg
parents:
0
diff
changeset
|
2053 Label exception_pending; |
018d5b58dd4f
6537506: Provide a mechanism for specifying Java-level USDT-like dtrace probes
kamg
parents:
0
diff
changeset
|
2054 |
018d5b58dd4f
6537506: Provide a mechanism for specifying Java-level USDT-like dtrace probes
kamg
parents:
0
diff
changeset
|
2055 |
018d5b58dd4f
6537506: Provide a mechanism for specifying Java-level USDT-like dtrace probes
kamg
parents:
0
diff
changeset
|
2056 __ verify_oop(receiver); |
018d5b58dd4f
6537506: Provide a mechanism for specifying Java-level USDT-like dtrace probes
kamg
parents:
0
diff
changeset
|
2057 __ cmpl(ic_reg, Address(receiver, oopDesc::klass_offset_in_bytes())); |
018d5b58dd4f
6537506: Provide a mechanism for specifying Java-level USDT-like dtrace probes
kamg
parents:
0
diff
changeset
|
2058 __ jcc(Assembler::equal, hit); |
018d5b58dd4f
6537506: Provide a mechanism for specifying Java-level USDT-like dtrace probes
kamg
parents:
0
diff
changeset
|
2059 |
018d5b58dd4f
6537506: Provide a mechanism for specifying Java-level USDT-like dtrace probes
kamg
parents:
0
diff
changeset
|
2060 __ jump(RuntimeAddress(SharedRuntime::get_ic_miss_stub())); |
018d5b58dd4f
6537506: Provide a mechanism for specifying Java-level USDT-like dtrace probes
kamg
parents:
0
diff
changeset
|
2061 |
018d5b58dd4f
6537506: Provide a mechanism for specifying Java-level USDT-like dtrace probes
kamg
parents:
0
diff
changeset
|
2062 // verified entry must be aligned for code patching. |
018d5b58dd4f
6537506: Provide a mechanism for specifying Java-level USDT-like dtrace probes
kamg
parents:
0
diff
changeset
|
2063 // and the first 5 bytes must be in the same cache line |
018d5b58dd4f
6537506: Provide a mechanism for specifying Java-level USDT-like dtrace probes
kamg
parents:
0
diff
changeset
|
2064 // if we align at 8 then we will be sure 5 bytes are in the same line |
018d5b58dd4f
6537506: Provide a mechanism for specifying Java-level USDT-like dtrace probes
kamg
parents:
0
diff
changeset
|
2065 __ align(8); |
018d5b58dd4f
6537506: Provide a mechanism for specifying Java-level USDT-like dtrace probes
kamg
parents:
0
diff
changeset
|
2066 |
018d5b58dd4f
6537506: Provide a mechanism for specifying Java-level USDT-like dtrace probes
kamg
parents:
0
diff
changeset
|
2067 __ bind(hit); |
018d5b58dd4f
6537506: Provide a mechanism for specifying Java-level USDT-like dtrace probes
kamg
parents:
0
diff
changeset
|
2068 |
018d5b58dd4f
6537506: Provide a mechanism for specifying Java-level USDT-like dtrace probes
kamg
parents:
0
diff
changeset
|
2069 int vep_offset = ((intptr_t)__ pc()) - start; |
018d5b58dd4f
6537506: Provide a mechanism for specifying Java-level USDT-like dtrace probes
kamg
parents:
0
diff
changeset
|
2070 |
018d5b58dd4f
6537506: Provide a mechanism for specifying Java-level USDT-like dtrace probes
kamg
parents:
0
diff
changeset
|
2071 |
018d5b58dd4f
6537506: Provide a mechanism for specifying Java-level USDT-like dtrace probes
kamg
parents:
0
diff
changeset
|
2072 // The instruction at the verified entry point must be 5 bytes or longer |
018d5b58dd4f
6537506: Provide a mechanism for specifying Java-level USDT-like dtrace probes
kamg
parents:
0
diff
changeset
|
2073 // because it can be patched on the fly by make_non_entrant. The stack bang |
018d5b58dd4f
6537506: Provide a mechanism for specifying Java-level USDT-like dtrace probes
kamg
parents:
0
diff
changeset
|
2074 // instruction fits that requirement. |
018d5b58dd4f
6537506: Provide a mechanism for specifying Java-level USDT-like dtrace probes
kamg
parents:
0
diff
changeset
|
2075 |
018d5b58dd4f
6537506: Provide a mechanism for specifying Java-level USDT-like dtrace probes
kamg
parents:
0
diff
changeset
|
2076 // Generate stack overflow check |
018d5b58dd4f
6537506: Provide a mechanism for specifying Java-level USDT-like dtrace probes
kamg
parents:
0
diff
changeset
|
2077 |
018d5b58dd4f
6537506: Provide a mechanism for specifying Java-level USDT-like dtrace probes
kamg
parents:
0
diff
changeset
|
2078 |
018d5b58dd4f
6537506: Provide a mechanism for specifying Java-level USDT-like dtrace probes
kamg
parents:
0
diff
changeset
|
2079 if (UseStackBanging) { |
018d5b58dd4f
6537506: Provide a mechanism for specifying Java-level USDT-like dtrace probes
kamg
parents:
0
diff
changeset
|
2080 if (stack_size <= StackShadowPages*os::vm_page_size()) { |
018d5b58dd4f
6537506: Provide a mechanism for specifying Java-level USDT-like dtrace probes
kamg
parents:
0
diff
changeset
|
2081 __ bang_stack_with_offset(StackShadowPages*os::vm_page_size()); |
018d5b58dd4f
6537506: Provide a mechanism for specifying Java-level USDT-like dtrace probes
kamg
parents:
0
diff
changeset
|
2082 } else { |
018d5b58dd4f
6537506: Provide a mechanism for specifying Java-level USDT-like dtrace probes
kamg
parents:
0
diff
changeset
|
2083 __ movl(rax, stack_size); |
018d5b58dd4f
6537506: Provide a mechanism for specifying Java-level USDT-like dtrace probes
kamg
parents:
0
diff
changeset
|
2084 __ bang_stack_size(rax, rbx); |
018d5b58dd4f
6537506: Provide a mechanism for specifying Java-level USDT-like dtrace probes
kamg
parents:
0
diff
changeset
|
2085 } |
018d5b58dd4f
6537506: Provide a mechanism for specifying Java-level USDT-like dtrace probes
kamg
parents:
0
diff
changeset
|
2086 } else { |
018d5b58dd4f
6537506: Provide a mechanism for specifying Java-level USDT-like dtrace probes
kamg
parents:
0
diff
changeset
|
2087 // need a 5 byte instruction to allow MT safe patching to non-entrant |
018d5b58dd4f
6537506: Provide a mechanism for specifying Java-level USDT-like dtrace probes
kamg
parents:
0
diff
changeset
|
2088 __ fat_nop(); |
018d5b58dd4f
6537506: Provide a mechanism for specifying Java-level USDT-like dtrace probes
kamg
parents:
0
diff
changeset
|
2089 } |
018d5b58dd4f
6537506: Provide a mechanism for specifying Java-level USDT-like dtrace probes
kamg
parents:
0
diff
changeset
|
2090 |
018d5b58dd4f
6537506: Provide a mechanism for specifying Java-level USDT-like dtrace probes
kamg
parents:
0
diff
changeset
|
2091 assert(((int)__ pc() - start - vep_offset) >= 5, |
018d5b58dd4f
6537506: Provide a mechanism for specifying Java-level USDT-like dtrace probes
kamg
parents:
0
diff
changeset
|
2092 "valid size for make_non_entrant"); |
018d5b58dd4f
6537506: Provide a mechanism for specifying Java-level USDT-like dtrace probes
kamg
parents:
0
diff
changeset
|
2093 |
018d5b58dd4f
6537506: Provide a mechanism for specifying Java-level USDT-like dtrace probes
kamg
parents:
0
diff
changeset
|
2094 // Generate a new frame for the wrapper. |
018d5b58dd4f
6537506: Provide a mechanism for specifying Java-level USDT-like dtrace probes
kamg
parents:
0
diff
changeset
|
2095 __ enter(); |
018d5b58dd4f
6537506: Provide a mechanism for specifying Java-level USDT-like dtrace probes
kamg
parents:
0
diff
changeset
|
2096 |
018d5b58dd4f
6537506: Provide a mechanism for specifying Java-level USDT-like dtrace probes
kamg
parents:
0
diff
changeset
|
2097 // -2 because return address is already present and so is saved rbp, |
018d5b58dd4f
6537506: Provide a mechanism for specifying Java-level USDT-like dtrace probes
kamg
parents:
0
diff
changeset
|
2098 if (stack_size - 2*wordSize != 0) { |
018d5b58dd4f
6537506: Provide a mechanism for specifying Java-level USDT-like dtrace probes
kamg
parents:
0
diff
changeset
|
2099 __ subl(rsp, stack_size - 2*wordSize); |
018d5b58dd4f
6537506: Provide a mechanism for specifying Java-level USDT-like dtrace probes
kamg
parents:
0
diff
changeset
|
2100 } |
018d5b58dd4f
6537506: Provide a mechanism for specifying Java-level USDT-like dtrace probes
kamg
parents:
0
diff
changeset
|
2101 |
018d5b58dd4f
6537506: Provide a mechanism for specifying Java-level USDT-like dtrace probes
kamg
parents:
0
diff
changeset
|
2102 // Frame is now completed as far a size and linkage. |
018d5b58dd4f
6537506: Provide a mechanism for specifying Java-level USDT-like dtrace probes
kamg
parents:
0
diff
changeset
|
2103 |
018d5b58dd4f
6537506: Provide a mechanism for specifying Java-level USDT-like dtrace probes
kamg
parents:
0
diff
changeset
|
2104 int frame_complete = ((intptr_t)__ pc()) - start; |
018d5b58dd4f
6537506: Provide a mechanism for specifying Java-level USDT-like dtrace probes
kamg
parents:
0
diff
changeset
|
2105 |
018d5b58dd4f
6537506: Provide a mechanism for specifying Java-level USDT-like dtrace probes
kamg
parents:
0
diff
changeset
|
2106 // First thing we do store all the args as if we are doing the call. |
018d5b58dd4f
6537506: Provide a mechanism for specifying Java-level USDT-like dtrace probes
kamg
parents:
0
diff
changeset
|
2107 // Since the C calling convention is stack based that ensures that |
018d5b58dd4f
6537506: Provide a mechanism for specifying Java-level USDT-like dtrace probes
kamg
parents:
0
diff
changeset
|
2108 // all the Java register args are stored before we need to convert any |
018d5b58dd4f
6537506: Provide a mechanism for specifying Java-level USDT-like dtrace probes
kamg
parents:
0
diff
changeset
|
2109 // string we might have. |
018d5b58dd4f
6537506: Provide a mechanism for specifying Java-level USDT-like dtrace probes
kamg
parents:
0
diff
changeset
|
2110 |
018d5b58dd4f
6537506: Provide a mechanism for specifying Java-level USDT-like dtrace probes
kamg
parents:
0
diff
changeset
|
2111 int sid = 0; |
018d5b58dd4f
6537506: Provide a mechanism for specifying Java-level USDT-like dtrace probes
kamg
parents:
0
diff
changeset
|
2112 int c_arg, j_arg; |
018d5b58dd4f
6537506: Provide a mechanism for specifying Java-level USDT-like dtrace probes
kamg
parents:
0
diff
changeset
|
2113 int string_reg = 0; |
018d5b58dd4f
6537506: Provide a mechanism for specifying Java-level USDT-like dtrace probes
kamg
parents:
0
diff
changeset
|
2114 |
018d5b58dd4f
6537506: Provide a mechanism for specifying Java-level USDT-like dtrace probes
kamg
parents:
0
diff
changeset
|
2115 for (j_arg = first_arg_to_pass, c_arg = 0 ; |
018d5b58dd4f
6537506: Provide a mechanism for specifying Java-level USDT-like dtrace probes
kamg
parents:
0
diff
changeset
|
2116 j_arg < total_args_passed ; j_arg++, c_arg++ ) { |
018d5b58dd4f
6537506: Provide a mechanism for specifying Java-level USDT-like dtrace probes
kamg
parents:
0
diff
changeset
|
2117 |
018d5b58dd4f
6537506: Provide a mechanism for specifying Java-level USDT-like dtrace probes
kamg
parents:
0
diff
changeset
|
2118 VMRegPair src = in_regs[j_arg]; |
018d5b58dd4f
6537506: Provide a mechanism for specifying Java-level USDT-like dtrace probes
kamg
parents:
0
diff
changeset
|
2119 VMRegPair dst = out_regs[c_arg]; |
018d5b58dd4f
6537506: Provide a mechanism for specifying Java-level USDT-like dtrace probes
kamg
parents:
0
diff
changeset
|
2120 assert(dst.first()->is_stack() || in_sig_bt[j_arg] == T_VOID, |
018d5b58dd4f
6537506: Provide a mechanism for specifying Java-level USDT-like dtrace probes
kamg
parents:
0
diff
changeset
|
2121 "stack based abi assumed"); |
018d5b58dd4f
6537506: Provide a mechanism for specifying Java-level USDT-like dtrace probes
kamg
parents:
0
diff
changeset
|
2122 |
018d5b58dd4f
6537506: Provide a mechanism for specifying Java-level USDT-like dtrace probes
kamg
parents:
0
diff
changeset
|
2123 switch (in_sig_bt[j_arg]) { |
018d5b58dd4f
6537506: Provide a mechanism for specifying Java-level USDT-like dtrace probes
kamg
parents:
0
diff
changeset
|
2124 |
018d5b58dd4f
6537506: Provide a mechanism for specifying Java-level USDT-like dtrace probes
kamg
parents:
0
diff
changeset
|
2125 case T_ARRAY: |
018d5b58dd4f
6537506: Provide a mechanism for specifying Java-level USDT-like dtrace probes
kamg
parents:
0
diff
changeset
|
2126 case T_OBJECT: |
018d5b58dd4f
6537506: Provide a mechanism for specifying Java-level USDT-like dtrace probes
kamg
parents:
0
diff
changeset
|
2127 if (out_sig_bt[c_arg] == T_ADDRESS) { |
018d5b58dd4f
6537506: Provide a mechanism for specifying Java-level USDT-like dtrace probes
kamg
parents:
0
diff
changeset
|
2128 // Any register based arg for a java string after the first |
018d5b58dd4f
6537506: Provide a mechanism for specifying Java-level USDT-like dtrace probes
kamg
parents:
0
diff
changeset
|
2129 // will be destroyed by the call to get_utf so we store |
018d5b58dd4f
6537506: Provide a mechanism for specifying Java-level USDT-like dtrace probes
kamg
parents:
0
diff
changeset
|
2130 // the original value in the location the utf string address |
018d5b58dd4f
6537506: Provide a mechanism for specifying Java-level USDT-like dtrace probes
kamg
parents:
0
diff
changeset
|
2131 // will eventually be stored. |
018d5b58dd4f
6537506: Provide a mechanism for specifying Java-level USDT-like dtrace probes
kamg
parents:
0
diff
changeset
|
2132 if (src.first()->is_reg()) { |
018d5b58dd4f
6537506: Provide a mechanism for specifying Java-level USDT-like dtrace probes
kamg
parents:
0
diff
changeset
|
2133 if (string_reg++ != 0) { |
018d5b58dd4f
6537506: Provide a mechanism for specifying Java-level USDT-like dtrace probes
kamg
parents:
0
diff
changeset
|
2134 simple_move32(masm, src, dst); |
018d5b58dd4f
6537506: Provide a mechanism for specifying Java-level USDT-like dtrace probes
kamg
parents:
0
diff
changeset
|
2135 } |
018d5b58dd4f
6537506: Provide a mechanism for specifying Java-level USDT-like dtrace probes
kamg
parents:
0
diff
changeset
|
2136 } |
018d5b58dd4f
6537506: Provide a mechanism for specifying Java-level USDT-like dtrace probes
kamg
parents:
0
diff
changeset
|
2137 } else if (out_sig_bt[c_arg] == T_INT || out_sig_bt[c_arg] == T_LONG) { |
018d5b58dd4f
6537506: Provide a mechanism for specifying Java-level USDT-like dtrace probes
kamg
parents:
0
diff
changeset
|
2138 // need to unbox a one-word value |
018d5b58dd4f
6537506: Provide a mechanism for specifying Java-level USDT-like dtrace probes
kamg
parents:
0
diff
changeset
|
2139 Register in_reg = rax; |
018d5b58dd4f
6537506: Provide a mechanism for specifying Java-level USDT-like dtrace probes
kamg
parents:
0
diff
changeset
|
2140 if ( src.first()->is_reg() ) { |
018d5b58dd4f
6537506: Provide a mechanism for specifying Java-level USDT-like dtrace probes
kamg
parents:
0
diff
changeset
|
2141 in_reg = src.first()->as_Register(); |
018d5b58dd4f
6537506: Provide a mechanism for specifying Java-level USDT-like dtrace probes
kamg
parents:
0
diff
changeset
|
2142 } else { |
018d5b58dd4f
6537506: Provide a mechanism for specifying Java-level USDT-like dtrace probes
kamg
parents:
0
diff
changeset
|
2143 simple_move32(masm, src, in_reg->as_VMReg()); |
018d5b58dd4f
6537506: Provide a mechanism for specifying Java-level USDT-like dtrace probes
kamg
parents:
0
diff
changeset
|
2144 } |
018d5b58dd4f
6537506: Provide a mechanism for specifying Java-level USDT-like dtrace probes
kamg
parents:
0
diff
changeset
|
2145 Label skipUnbox; |
018d5b58dd4f
6537506: Provide a mechanism for specifying Java-level USDT-like dtrace probes
kamg
parents:
0
diff
changeset
|
2146 __ movl(Address(rsp, reg2offset_out(dst.first())), NULL_WORD); |
018d5b58dd4f
6537506: Provide a mechanism for specifying Java-level USDT-like dtrace probes
kamg
parents:
0
diff
changeset
|
2147 if ( out_sig_bt[c_arg] == T_LONG ) { |
018d5b58dd4f
6537506: Provide a mechanism for specifying Java-level USDT-like dtrace probes
kamg
parents:
0
diff
changeset
|
2148 __ movl(Address(rsp, reg2offset_out(dst.second())), NULL_WORD); |
018d5b58dd4f
6537506: Provide a mechanism for specifying Java-level USDT-like dtrace probes
kamg
parents:
0
diff
changeset
|
2149 } |
018d5b58dd4f
6537506: Provide a mechanism for specifying Java-level USDT-like dtrace probes
kamg
parents:
0
diff
changeset
|
2150 __ testl(in_reg, in_reg); |
018d5b58dd4f
6537506: Provide a mechanism for specifying Java-level USDT-like dtrace probes
kamg
parents:
0
diff
changeset
|
2151 __ jcc(Assembler::zero, skipUnbox); |
018d5b58dd4f
6537506: Provide a mechanism for specifying Java-level USDT-like dtrace probes
kamg
parents:
0
diff
changeset
|
2152 assert(dst.first()->is_stack() && |
018d5b58dd4f
6537506: Provide a mechanism for specifying Java-level USDT-like dtrace probes
kamg
parents:
0
diff
changeset
|
2153 (!dst.second()->is_valid() || dst.second()->is_stack()), |
018d5b58dd4f
6537506: Provide a mechanism for specifying Java-level USDT-like dtrace probes
kamg
parents:
0
diff
changeset
|
2154 "value(s) must go into stack slots"); |
165
437d03ea40b1
6703888: Compressed Oops: use the 32-bits gap after klass in a object
kvn
parents:
116
diff
changeset
|
2155 |
437d03ea40b1
6703888: Compressed Oops: use the 32-bits gap after klass in a object
kvn
parents:
116
diff
changeset
|
2156 BasicType bt = out_sig_bt[c_arg]; |
437d03ea40b1
6703888: Compressed Oops: use the 32-bits gap after klass in a object
kvn
parents:
116
diff
changeset
|
2157 int box_offset = java_lang_boxing_object::value_offset_in_bytes(bt); |
437d03ea40b1
6703888: Compressed Oops: use the 32-bits gap after klass in a object
kvn
parents:
116
diff
changeset
|
2158 if ( bt == T_LONG ) { |
116
018d5b58dd4f
6537506: Provide a mechanism for specifying Java-level USDT-like dtrace probes
kamg
parents:
0
diff
changeset
|
2159 __ movl(rbx, Address(in_reg, |
018d5b58dd4f
6537506: Provide a mechanism for specifying Java-level USDT-like dtrace probes
kamg
parents:
0
diff
changeset
|
2160 box_offset + VMRegImpl::stack_slot_size)); |
018d5b58dd4f
6537506: Provide a mechanism for specifying Java-level USDT-like dtrace probes
kamg
parents:
0
diff
changeset
|
2161 __ movl(Address(rsp, reg2offset_out(dst.second())), rbx); |
018d5b58dd4f
6537506: Provide a mechanism for specifying Java-level USDT-like dtrace probes
kamg
parents:
0
diff
changeset
|
2162 } |
018d5b58dd4f
6537506: Provide a mechanism for specifying Java-level USDT-like dtrace probes
kamg
parents:
0
diff
changeset
|
2163 __ movl(in_reg, Address(in_reg, box_offset)); |
018d5b58dd4f
6537506: Provide a mechanism for specifying Java-level USDT-like dtrace probes
kamg
parents:
0
diff
changeset
|
2164 __ movl(Address(rsp, reg2offset_out(dst.first())), in_reg); |
018d5b58dd4f
6537506: Provide a mechanism for specifying Java-level USDT-like dtrace probes
kamg
parents:
0
diff
changeset
|
2165 __ bind(skipUnbox); |
018d5b58dd4f
6537506: Provide a mechanism for specifying Java-level USDT-like dtrace probes
kamg
parents:
0
diff
changeset
|
2166 } else { |
018d5b58dd4f
6537506: Provide a mechanism for specifying Java-level USDT-like dtrace probes
kamg
parents:
0
diff
changeset
|
2167 // Convert the arg to NULL |
018d5b58dd4f
6537506: Provide a mechanism for specifying Java-level USDT-like dtrace probes
kamg
parents:
0
diff
changeset
|
2168 __ movl(Address(rsp, reg2offset_out(dst.first())), NULL_WORD); |
018d5b58dd4f
6537506: Provide a mechanism for specifying Java-level USDT-like dtrace probes
kamg
parents:
0
diff
changeset
|
2169 } |
018d5b58dd4f
6537506: Provide a mechanism for specifying Java-level USDT-like dtrace probes
kamg
parents:
0
diff
changeset
|
2170 if (out_sig_bt[c_arg] == T_LONG) { |
018d5b58dd4f
6537506: Provide a mechanism for specifying Java-level USDT-like dtrace probes
kamg
parents:
0
diff
changeset
|
2171 assert(out_sig_bt[c_arg+1] == T_VOID, "must be"); |
018d5b58dd4f
6537506: Provide a mechanism for specifying Java-level USDT-like dtrace probes
kamg
parents:
0
diff
changeset
|
2172 ++c_arg; // Move over the T_VOID To keep the loop indices in sync |
018d5b58dd4f
6537506: Provide a mechanism for specifying Java-level USDT-like dtrace probes
kamg
parents:
0
diff
changeset
|
2173 } |
018d5b58dd4f
6537506: Provide a mechanism for specifying Java-level USDT-like dtrace probes
kamg
parents:
0
diff
changeset
|
2174 break; |
018d5b58dd4f
6537506: Provide a mechanism for specifying Java-level USDT-like dtrace probes
kamg
parents:
0
diff
changeset
|
2175 |
018d5b58dd4f
6537506: Provide a mechanism for specifying Java-level USDT-like dtrace probes
kamg
parents:
0
diff
changeset
|
2176 case T_VOID: |
018d5b58dd4f
6537506: Provide a mechanism for specifying Java-level USDT-like dtrace probes
kamg
parents:
0
diff
changeset
|
2177 break; |
018d5b58dd4f
6537506: Provide a mechanism for specifying Java-level USDT-like dtrace probes
kamg
parents:
0
diff
changeset
|
2178 |
018d5b58dd4f
6537506: Provide a mechanism for specifying Java-level USDT-like dtrace probes
kamg
parents:
0
diff
changeset
|
2179 case T_FLOAT: |
018d5b58dd4f
6537506: Provide a mechanism for specifying Java-level USDT-like dtrace probes
kamg
parents:
0
diff
changeset
|
2180 float_move(masm, src, dst); |
018d5b58dd4f
6537506: Provide a mechanism for specifying Java-level USDT-like dtrace probes
kamg
parents:
0
diff
changeset
|
2181 break; |
018d5b58dd4f
6537506: Provide a mechanism for specifying Java-level USDT-like dtrace probes
kamg
parents:
0
diff
changeset
|
2182 |
018d5b58dd4f
6537506: Provide a mechanism for specifying Java-level USDT-like dtrace probes
kamg
parents:
0
diff
changeset
|
2183 case T_DOUBLE: |
018d5b58dd4f
6537506: Provide a mechanism for specifying Java-level USDT-like dtrace probes
kamg
parents:
0
diff
changeset
|
2184 assert( j_arg + 1 < total_args_passed && |
018d5b58dd4f
6537506: Provide a mechanism for specifying Java-level USDT-like dtrace probes
kamg
parents:
0
diff
changeset
|
2185 in_sig_bt[j_arg + 1] == T_VOID, "bad arg list"); |
018d5b58dd4f
6537506: Provide a mechanism for specifying Java-level USDT-like dtrace probes
kamg
parents:
0
diff
changeset
|
2186 double_move(masm, src, dst); |
018d5b58dd4f
6537506: Provide a mechanism for specifying Java-level USDT-like dtrace probes
kamg
parents:
0
diff
changeset
|
2187 break; |
018d5b58dd4f
6537506: Provide a mechanism for specifying Java-level USDT-like dtrace probes
kamg
parents:
0
diff
changeset
|
2188 |
018d5b58dd4f
6537506: Provide a mechanism for specifying Java-level USDT-like dtrace probes
kamg
parents:
0
diff
changeset
|
2189 case T_LONG : |
018d5b58dd4f
6537506: Provide a mechanism for specifying Java-level USDT-like dtrace probes
kamg
parents:
0
diff
changeset
|
2190 long_move(masm, src, dst); |
018d5b58dd4f
6537506: Provide a mechanism for specifying Java-level USDT-like dtrace probes
kamg
parents:
0
diff
changeset
|
2191 break; |
018d5b58dd4f
6537506: Provide a mechanism for specifying Java-level USDT-like dtrace probes
kamg
parents:
0
diff
changeset
|
2192 |
018d5b58dd4f
6537506: Provide a mechanism for specifying Java-level USDT-like dtrace probes
kamg
parents:
0
diff
changeset
|
2193 case T_ADDRESS: assert(false, "found T_ADDRESS in java args"); |
018d5b58dd4f
6537506: Provide a mechanism for specifying Java-level USDT-like dtrace probes
kamg
parents:
0
diff
changeset
|
2194 |
018d5b58dd4f
6537506: Provide a mechanism for specifying Java-level USDT-like dtrace probes
kamg
parents:
0
diff
changeset
|
2195 default: |
018d5b58dd4f
6537506: Provide a mechanism for specifying Java-level USDT-like dtrace probes
kamg
parents:
0
diff
changeset
|
2196 simple_move32(masm, src, dst); |
018d5b58dd4f
6537506: Provide a mechanism for specifying Java-level USDT-like dtrace probes
kamg
parents:
0
diff
changeset
|
2197 } |
018d5b58dd4f
6537506: Provide a mechanism for specifying Java-level USDT-like dtrace probes
kamg
parents:
0
diff
changeset
|
2198 } |
018d5b58dd4f
6537506: Provide a mechanism for specifying Java-level USDT-like dtrace probes
kamg
parents:
0
diff
changeset
|
2199 |
018d5b58dd4f
6537506: Provide a mechanism for specifying Java-level USDT-like dtrace probes
kamg
parents:
0
diff
changeset
|
2200 // Now we must convert any string we have to utf8 |
018d5b58dd4f
6537506: Provide a mechanism for specifying Java-level USDT-like dtrace probes
kamg
parents:
0
diff
changeset
|
2201 // |
018d5b58dd4f
6537506: Provide a mechanism for specifying Java-level USDT-like dtrace probes
kamg
parents:
0
diff
changeset
|
2202 |
018d5b58dd4f
6537506: Provide a mechanism for specifying Java-level USDT-like dtrace probes
kamg
parents:
0
diff
changeset
|
2203 for (sid = 0, j_arg = first_arg_to_pass, c_arg = 0 ; |
018d5b58dd4f
6537506: Provide a mechanism for specifying Java-level USDT-like dtrace probes
kamg
parents:
0
diff
changeset
|
2204 sid < total_strings ; j_arg++, c_arg++ ) { |
018d5b58dd4f
6537506: Provide a mechanism for specifying Java-level USDT-like dtrace probes
kamg
parents:
0
diff
changeset
|
2205 |
018d5b58dd4f
6537506: Provide a mechanism for specifying Java-level USDT-like dtrace probes
kamg
parents:
0
diff
changeset
|
2206 if (out_sig_bt[c_arg] == T_ADDRESS) { |
018d5b58dd4f
6537506: Provide a mechanism for specifying Java-level USDT-like dtrace probes
kamg
parents:
0
diff
changeset
|
2207 |
018d5b58dd4f
6537506: Provide a mechanism for specifying Java-level USDT-like dtrace probes
kamg
parents:
0
diff
changeset
|
2208 Address utf8_addr = Address( |
018d5b58dd4f
6537506: Provide a mechanism for specifying Java-level USDT-like dtrace probes
kamg
parents:
0
diff
changeset
|
2209 rsp, string_locs[sid++] * VMRegImpl::stack_slot_size); |
018d5b58dd4f
6537506: Provide a mechanism for specifying Java-level USDT-like dtrace probes
kamg
parents:
0
diff
changeset
|
2210 __ leal(rax, utf8_addr); |
018d5b58dd4f
6537506: Provide a mechanism for specifying Java-level USDT-like dtrace probes
kamg
parents:
0
diff
changeset
|
2211 |
018d5b58dd4f
6537506: Provide a mechanism for specifying Java-level USDT-like dtrace probes
kamg
parents:
0
diff
changeset
|
2212 // The first string we find might still be in the original java arg |
018d5b58dd4f
6537506: Provide a mechanism for specifying Java-level USDT-like dtrace probes
kamg
parents:
0
diff
changeset
|
2213 // register |
018d5b58dd4f
6537506: Provide a mechanism for specifying Java-level USDT-like dtrace probes
kamg
parents:
0
diff
changeset
|
2214 VMReg orig_loc = in_regs[j_arg].first(); |
018d5b58dd4f
6537506: Provide a mechanism for specifying Java-level USDT-like dtrace probes
kamg
parents:
0
diff
changeset
|
2215 Register string_oop; |
018d5b58dd4f
6537506: Provide a mechanism for specifying Java-level USDT-like dtrace probes
kamg
parents:
0
diff
changeset
|
2216 |
018d5b58dd4f
6537506: Provide a mechanism for specifying Java-level USDT-like dtrace probes
kamg
parents:
0
diff
changeset
|
2217 // This is where the argument will eventually reside |
018d5b58dd4f
6537506: Provide a mechanism for specifying Java-level USDT-like dtrace probes
kamg
parents:
0
diff
changeset
|
2218 Address dest = Address(rsp, reg2offset_out(out_regs[c_arg].first())); |
018d5b58dd4f
6537506: Provide a mechanism for specifying Java-level USDT-like dtrace probes
kamg
parents:
0
diff
changeset
|
2219 |
018d5b58dd4f
6537506: Provide a mechanism for specifying Java-level USDT-like dtrace probes
kamg
parents:
0
diff
changeset
|
2220 if (sid == 1 && orig_loc->is_reg()) { |
018d5b58dd4f
6537506: Provide a mechanism for specifying Java-level USDT-like dtrace probes
kamg
parents:
0
diff
changeset
|
2221 string_oop = orig_loc->as_Register(); |
018d5b58dd4f
6537506: Provide a mechanism for specifying Java-level USDT-like dtrace probes
kamg
parents:
0
diff
changeset
|
2222 assert(string_oop != rax, "smashed arg"); |
018d5b58dd4f
6537506: Provide a mechanism for specifying Java-level USDT-like dtrace probes
kamg
parents:
0
diff
changeset
|
2223 } else { |
018d5b58dd4f
6537506: Provide a mechanism for specifying Java-level USDT-like dtrace probes
kamg
parents:
0
diff
changeset
|
2224 |
018d5b58dd4f
6537506: Provide a mechanism for specifying Java-level USDT-like dtrace probes
kamg
parents:
0
diff
changeset
|
2225 if (orig_loc->is_reg()) { |
018d5b58dd4f
6537506: Provide a mechanism for specifying Java-level USDT-like dtrace probes
kamg
parents:
0
diff
changeset
|
2226 // Get the copy of the jls object |
018d5b58dd4f
6537506: Provide a mechanism for specifying Java-level USDT-like dtrace probes
kamg
parents:
0
diff
changeset
|
2227 __ movl(rcx, dest); |
018d5b58dd4f
6537506: Provide a mechanism for specifying Java-level USDT-like dtrace probes
kamg
parents:
0
diff
changeset
|
2228 } else { |
018d5b58dd4f
6537506: Provide a mechanism for specifying Java-level USDT-like dtrace probes
kamg
parents:
0
diff
changeset
|
2229 // arg is still in the original location |
018d5b58dd4f
6537506: Provide a mechanism for specifying Java-level USDT-like dtrace probes
kamg
parents:
0
diff
changeset
|
2230 __ movl(rcx, Address(rbp, reg2offset_in(orig_loc))); |
018d5b58dd4f
6537506: Provide a mechanism for specifying Java-level USDT-like dtrace probes
kamg
parents:
0
diff
changeset
|
2231 } |
018d5b58dd4f
6537506: Provide a mechanism for specifying Java-level USDT-like dtrace probes
kamg
parents:
0
diff
changeset
|
2232 string_oop = rcx; |
018d5b58dd4f
6537506: Provide a mechanism for specifying Java-level USDT-like dtrace probes
kamg
parents:
0
diff
changeset
|
2233 |
018d5b58dd4f
6537506: Provide a mechanism for specifying Java-level USDT-like dtrace probes
kamg
parents:
0
diff
changeset
|
2234 } |
018d5b58dd4f
6537506: Provide a mechanism for specifying Java-level USDT-like dtrace probes
kamg
parents:
0
diff
changeset
|
2235 Label nullString; |
018d5b58dd4f
6537506: Provide a mechanism for specifying Java-level USDT-like dtrace probes
kamg
parents:
0
diff
changeset
|
2236 __ movl(dest, NULL_WORD); |
018d5b58dd4f
6537506: Provide a mechanism for specifying Java-level USDT-like dtrace probes
kamg
parents:
0
diff
changeset
|
2237 __ testl(string_oop, string_oop); |
018d5b58dd4f
6537506: Provide a mechanism for specifying Java-level USDT-like dtrace probes
kamg
parents:
0
diff
changeset
|
2238 __ jcc(Assembler::zero, nullString); |
018d5b58dd4f
6537506: Provide a mechanism for specifying Java-level USDT-like dtrace probes
kamg
parents:
0
diff
changeset
|
2239 |
018d5b58dd4f
6537506: Provide a mechanism for specifying Java-level USDT-like dtrace probes
kamg
parents:
0
diff
changeset
|
2240 // Now we can store the address of the utf string as the argument |
018d5b58dd4f
6537506: Provide a mechanism for specifying Java-level USDT-like dtrace probes
kamg
parents:
0
diff
changeset
|
2241 __ movl(dest, rax); |
018d5b58dd4f
6537506: Provide a mechanism for specifying Java-level USDT-like dtrace probes
kamg
parents:
0
diff
changeset
|
2242 |
018d5b58dd4f
6537506: Provide a mechanism for specifying Java-level USDT-like dtrace probes
kamg
parents:
0
diff
changeset
|
2243 // And do the conversion |
018d5b58dd4f
6537506: Provide a mechanism for specifying Java-level USDT-like dtrace probes
kamg
parents:
0
diff
changeset
|
2244 __ call_VM_leaf(CAST_FROM_FN_PTR( |
018d5b58dd4f
6537506: Provide a mechanism for specifying Java-level USDT-like dtrace probes
kamg
parents:
0
diff
changeset
|
2245 address, SharedRuntime::get_utf), string_oop, rax); |
018d5b58dd4f
6537506: Provide a mechanism for specifying Java-level USDT-like dtrace probes
kamg
parents:
0
diff
changeset
|
2246 __ bind(nullString); |
018d5b58dd4f
6537506: Provide a mechanism for specifying Java-level USDT-like dtrace probes
kamg
parents:
0
diff
changeset
|
2247 } |
018d5b58dd4f
6537506: Provide a mechanism for specifying Java-level USDT-like dtrace probes
kamg
parents:
0
diff
changeset
|
2248 |
018d5b58dd4f
6537506: Provide a mechanism for specifying Java-level USDT-like dtrace probes
kamg
parents:
0
diff
changeset
|
2249 if (in_sig_bt[j_arg] == T_OBJECT && out_sig_bt[c_arg] == T_LONG) { |
018d5b58dd4f
6537506: Provide a mechanism for specifying Java-level USDT-like dtrace probes
kamg
parents:
0
diff
changeset
|
2250 assert(out_sig_bt[c_arg+1] == T_VOID, "must be"); |
018d5b58dd4f
6537506: Provide a mechanism for specifying Java-level USDT-like dtrace probes
kamg
parents:
0
diff
changeset
|
2251 ++c_arg; // Move over the T_VOID To keep the loop indices in sync |
018d5b58dd4f
6537506: Provide a mechanism for specifying Java-level USDT-like dtrace probes
kamg
parents:
0
diff
changeset
|
2252 } |
018d5b58dd4f
6537506: Provide a mechanism for specifying Java-level USDT-like dtrace probes
kamg
parents:
0
diff
changeset
|
2253 } |
018d5b58dd4f
6537506: Provide a mechanism for specifying Java-level USDT-like dtrace probes
kamg
parents:
0
diff
changeset
|
2254 |
018d5b58dd4f
6537506: Provide a mechanism for specifying Java-level USDT-like dtrace probes
kamg
parents:
0
diff
changeset
|
2255 |
018d5b58dd4f
6537506: Provide a mechanism for specifying Java-level USDT-like dtrace probes
kamg
parents:
0
diff
changeset
|
2256 // Ok now we are done. Need to place the nop that dtrace wants in order to |
018d5b58dd4f
6537506: Provide a mechanism for specifying Java-level USDT-like dtrace probes
kamg
parents:
0
diff
changeset
|
2257 // patch in the trap |
018d5b58dd4f
6537506: Provide a mechanism for specifying Java-level USDT-like dtrace probes
kamg
parents:
0
diff
changeset
|
2258 |
018d5b58dd4f
6537506: Provide a mechanism for specifying Java-level USDT-like dtrace probes
kamg
parents:
0
diff
changeset
|
2259 int patch_offset = ((intptr_t)__ pc()) - start; |
018d5b58dd4f
6537506: Provide a mechanism for specifying Java-level USDT-like dtrace probes
kamg
parents:
0
diff
changeset
|
2260 |
018d5b58dd4f
6537506: Provide a mechanism for specifying Java-level USDT-like dtrace probes
kamg
parents:
0
diff
changeset
|
2261 __ nop(); |
018d5b58dd4f
6537506: Provide a mechanism for specifying Java-level USDT-like dtrace probes
kamg
parents:
0
diff
changeset
|
2262 |
018d5b58dd4f
6537506: Provide a mechanism for specifying Java-level USDT-like dtrace probes
kamg
parents:
0
diff
changeset
|
2263 |
018d5b58dd4f
6537506: Provide a mechanism for specifying Java-level USDT-like dtrace probes
kamg
parents:
0
diff
changeset
|
2264 // Return |
018d5b58dd4f
6537506: Provide a mechanism for specifying Java-level USDT-like dtrace probes
kamg
parents:
0
diff
changeset
|
2265 |
018d5b58dd4f
6537506: Provide a mechanism for specifying Java-level USDT-like dtrace probes
kamg
parents:
0
diff
changeset
|
2266 __ leave(); |
018d5b58dd4f
6537506: Provide a mechanism for specifying Java-level USDT-like dtrace probes
kamg
parents:
0
diff
changeset
|
2267 __ ret(0); |
018d5b58dd4f
6537506: Provide a mechanism for specifying Java-level USDT-like dtrace probes
kamg
parents:
0
diff
changeset
|
2268 |
018d5b58dd4f
6537506: Provide a mechanism for specifying Java-level USDT-like dtrace probes
kamg
parents:
0
diff
changeset
|
2269 __ flush(); |
018d5b58dd4f
6537506: Provide a mechanism for specifying Java-level USDT-like dtrace probes
kamg
parents:
0
diff
changeset
|
2270 |
018d5b58dd4f
6537506: Provide a mechanism for specifying Java-level USDT-like dtrace probes
kamg
parents:
0
diff
changeset
|
2271 nmethod *nm = nmethod::new_dtrace_nmethod( |
018d5b58dd4f
6537506: Provide a mechanism for specifying Java-level USDT-like dtrace probes
kamg
parents:
0
diff
changeset
|
2272 method, masm->code(), vep_offset, patch_offset, frame_complete, |
018d5b58dd4f
6537506: Provide a mechanism for specifying Java-level USDT-like dtrace probes
kamg
parents:
0
diff
changeset
|
2273 stack_slots / VMRegImpl::slots_per_word); |
018d5b58dd4f
6537506: Provide a mechanism for specifying Java-level USDT-like dtrace probes
kamg
parents:
0
diff
changeset
|
2274 return nm; |
018d5b58dd4f
6537506: Provide a mechanism for specifying Java-level USDT-like dtrace probes
kamg
parents:
0
diff
changeset
|
2275 |
018d5b58dd4f
6537506: Provide a mechanism for specifying Java-level USDT-like dtrace probes
kamg
parents:
0
diff
changeset
|
2276 } |
018d5b58dd4f
6537506: Provide a mechanism for specifying Java-level USDT-like dtrace probes
kamg
parents:
0
diff
changeset
|
2277 |
018d5b58dd4f
6537506: Provide a mechanism for specifying Java-level USDT-like dtrace probes
kamg
parents:
0
diff
changeset
|
2278 #endif // HAVE_DTRACE_H |
018d5b58dd4f
6537506: Provide a mechanism for specifying Java-level USDT-like dtrace probes
kamg
parents:
0
diff
changeset
|
2279 |
0 | 2280 // this function returns the adjust size (in number of words) to a c2i adapter |
2281 // activation for use during deoptimization | |
2282 int Deoptimization::last_frame_adjust(int callee_parameters, int callee_locals ) { | |
1506 | 2283 return (callee_locals - callee_parameters) * Interpreter::stackElementWords; |
0 | 2284 } |
2285 | |
2286 | |
2287 uint SharedRuntime::out_preserve_stack_slots() { | |
2288 return 0; | |
2289 } | |
2290 | |
2291 | |
2292 //------------------------------generate_deopt_blob---------------------------- | |
2293 void SharedRuntime::generate_deopt_blob() { | |
2294 // allocate space for the code | |
2295 ResourceMark rm; | |
2296 // setup code generation tools | |
2297 CodeBuffer buffer("deopt_blob", 1024, 1024); | |
2298 MacroAssembler* masm = new MacroAssembler(&buffer); | |
2299 int frame_size_in_words; | |
2300 OopMap* map = NULL; | |
2301 // Account for the extra args we place on the stack | |
2302 // by the time we call fetch_unroll_info | |
2303 const int additional_words = 2; // deopt kind, thread | |
2304 | |
2305 OopMapSet *oop_maps = new OopMapSet(); | |
2306 | |
2307 // ------------- | |
2308 // This code enters when returning to a de-optimized nmethod. A return | |
2309 // address has been pushed on the the stack, and return values are in | |
2310 // registers. | |
2311 // If we are doing a normal deopt then we were called from the patched | |
2312 // nmethod from the point we returned to the nmethod. So the return | |
2313 // address on the stack is wrong by NativeCall::instruction_size | |
2314 // We will adjust the value to it looks like we have the original return | |
2315 // address on the stack (like when we eagerly deoptimized). | |
2316 // In the case of an exception pending with deoptimized then we enter | |
2317 // with a return address on the stack that points after the call we patched | |
2318 // into the exception handler. We have the following register state: | |
2319 // rax,: exception | |
2320 // rbx,: exception handler | |
2321 // rdx: throwing pc | |
2322 // So in this case we simply jam rdx into the useless return address and | |
2323 // the stack looks just like we want. | |
2324 // | |
2325 // At this point we need to de-opt. We save the argument return | |
2326 // registers. We call the first C routine, fetch_unroll_info(). This | |
2327 // routine captures the return values and returns a structure which | |
2328 // describes the current frame size and the sizes of all replacement frames. | |
2329 // The current frame is compiled code and may contain many inlined | |
2330 // functions, each with their own JVM state. We pop the current frame, then | |
2331 // push all the new frames. Then we call the C routine unpack_frames() to | |
2332 // populate these frames. Finally unpack_frames() returns us the new target | |
2333 // address. Notice that callee-save registers are BLOWN here; they have | |
2334 // already been captured in the vframeArray at the time the return PC was | |
2335 // patched. | |
2336 address start = __ pc(); | |
2337 Label cont; | |
2338 | |
2339 // Prolog for non exception case! | |
2340 | |
2341 // Save everything in sight. | |
2342 | |
926
c8e2135f7e30
6829127: Deoptimization Failure on Specjvm98 _227_mtrt with -XX:+DeoptimizeALot since Hs11 b01
cfang
parents:
628
diff
changeset
|
2343 map = RegisterSaver::save_live_registers(masm, additional_words, &frame_size_in_words, false); |
0 | 2344 // Normal deoptimization |
304 | 2345 __ push(Deoptimization::Unpack_deopt); |
0 | 2346 __ jmp(cont); |
2347 | |
2348 int reexecute_offset = __ pc() - start; | |
2349 | |
2350 // Reexecute case | |
2351 // return address is the pc describes what bci to do re-execute at | |
2352 | |
2353 // No need to update map as each call to save_live_registers will produce identical oopmap | |
926
c8e2135f7e30
6829127: Deoptimization Failure on Specjvm98 _227_mtrt with -XX:+DeoptimizeALot since Hs11 b01
cfang
parents:
628
diff
changeset
|
2354 (void) RegisterSaver::save_live_registers(masm, additional_words, &frame_size_in_words, false); |
0 | 2355 |
304 | 2356 __ push(Deoptimization::Unpack_reexecute); |
0 | 2357 __ jmp(cont); |
2358 | |
2359 int exception_offset = __ pc() - start; | |
2360 | |
2361 // Prolog for exception case | |
2362 | |
2363 // all registers are dead at this entry point, except for rax, and | |
2364 // rdx which contain the exception oop and exception pc | |
2365 // respectively. Set them in TLS and fall thru to the | |
2366 // unpack_with_exception_in_tls entry point. | |
2367 | |
2368 __ get_thread(rdi); | |
304 | 2369 __ movptr(Address(rdi, JavaThread::exception_pc_offset()), rdx); |
2370 __ movptr(Address(rdi, JavaThread::exception_oop_offset()), rax); | |
0 | 2371 |
2372 int exception_in_tls_offset = __ pc() - start; | |
2373 | |
2374 // new implementation because exception oop is now passed in JavaThread | |
2375 | |
2376 // Prolog for exception case | |
2377 // All registers must be preserved because they might be used by LinearScan | |
2378 // Exceptiop oop and throwing PC are passed in JavaThread | |
2379 // tos: stack at point of call to method that threw the exception (i.e. only | |
2380 // args are on the stack, no return address) | |
2381 | |
2382 // make room on stack for the return address | |
2383 // It will be patched later with the throwing pc. The correct value is not | |
2384 // available now because loading it from memory would destroy registers. | |
304 | 2385 __ push(0); |
0 | 2386 |
2387 // Save everything in sight. | |
2388 | |
2389 // No need to update map as each call to save_live_registers will produce identical oopmap | |
926
c8e2135f7e30
6829127: Deoptimization Failure on Specjvm98 _227_mtrt with -XX:+DeoptimizeALot since Hs11 b01
cfang
parents:
628
diff
changeset
|
2390 (void) RegisterSaver::save_live_registers(masm, additional_words, &frame_size_in_words, false); |
0 | 2391 |
2392 // Now it is safe to overwrite any register | |
2393 | |
2394 // store the correct deoptimization type | |
304 | 2395 __ push(Deoptimization::Unpack_exception); |
0 | 2396 |
2397 // load throwing pc from JavaThread and patch it as the return address | |
2398 // of the current frame. Then clear the field in JavaThread | |
2399 __ get_thread(rdi); | |
304 | 2400 __ movptr(rdx, Address(rdi, JavaThread::exception_pc_offset())); |
2401 __ movptr(Address(rbp, wordSize), rdx); | |
512
db4caa99ef11
6787106: Hotspot 32 bit build fails on platforms having different definitions for intptr_t & int32_t
xlu
parents:
304
diff
changeset
|
2402 __ movptr(Address(rdi, JavaThread::exception_pc_offset()), NULL_WORD); |
0 | 2403 |
2404 #ifdef ASSERT | |
2405 // verify that there is really an exception oop in JavaThread | |
304 | 2406 __ movptr(rax, Address(rdi, JavaThread::exception_oop_offset())); |
0 | 2407 __ verify_oop(rax); |
2408 | |
2409 // verify that there is no pending exception | |
2410 Label no_pending_exception; | |
304 | 2411 __ movptr(rax, Address(rdi, Thread::pending_exception_offset())); |
2412 __ testptr(rax, rax); | |
0 | 2413 __ jcc(Assembler::zero, no_pending_exception); |
2414 __ stop("must not have pending exception here"); | |
2415 __ bind(no_pending_exception); | |
2416 #endif | |
2417 | |
2418 __ bind(cont); | |
2419 | |
2420 // Compiled code leaves the floating point stack dirty, empty it. | |
2421 __ empty_FPU_stack(); | |
2422 | |
2423 | |
2424 // Call C code. Need thread and this frame, but NOT official VM entry | |
2425 // crud. We cannot block on this call, no GC can happen. | |
2426 __ get_thread(rcx); | |
304 | 2427 __ push(rcx); |
0 | 2428 // fetch_unroll_info needs to call last_java_frame() |
2429 __ set_last_Java_frame(rcx, noreg, noreg, NULL); | |
2430 | |
2431 __ call(RuntimeAddress(CAST_FROM_FN_PTR(address, Deoptimization::fetch_unroll_info))); | |
2432 | |
2433 // Need to have an oopmap that tells fetch_unroll_info where to | |
2434 // find any register it might need. | |
2435 | |
2436 oop_maps->add_gc_map( __ pc()-start, map); | |
2437 | |
2438 // Discard arg to fetch_unroll_info | |
304 | 2439 __ pop(rcx); |
0 | 2440 |
2441 __ get_thread(rcx); | |
2442 __ reset_last_Java_frame(rcx, false, false); | |
2443 | |
2444 // Load UnrollBlock into EDI | |
304 | 2445 __ mov(rdi, rax); |
0 | 2446 |
2447 // Move the unpack kind to a safe place in the UnrollBlock because | |
2448 // we are very short of registers | |
2449 | |
2450 Address unpack_kind(rdi, Deoptimization::UnrollBlock::unpack_kind_offset_in_bytes()); | |
2451 // retrieve the deopt kind from where we left it. | |
304 | 2452 __ pop(rax); |
0 | 2453 __ movl(unpack_kind, rax); // save the unpack_kind value |
2454 | |
2455 Label noException; | |
2456 __ cmpl(rax, Deoptimization::Unpack_exception); // Was exception pending? | |
2457 __ jcc(Assembler::notEqual, noException); | |
304 | 2458 __ movptr(rax, Address(rcx, JavaThread::exception_oop_offset())); |
2459 __ movptr(rdx, Address(rcx, JavaThread::exception_pc_offset())); | |
512
db4caa99ef11
6787106: Hotspot 32 bit build fails on platforms having different definitions for intptr_t & int32_t
xlu
parents:
304
diff
changeset
|
2460 __ movptr(Address(rcx, JavaThread::exception_oop_offset()), NULL_WORD); |
db4caa99ef11
6787106: Hotspot 32 bit build fails on platforms having different definitions for intptr_t & int32_t
xlu
parents:
304
diff
changeset
|
2461 __ movptr(Address(rcx, JavaThread::exception_pc_offset()), NULL_WORD); |
0 | 2462 |
2463 __ verify_oop(rax); | |
2464 | |
2465 // Overwrite the result registers with the exception results. | |
304 | 2466 __ movptr(Address(rsp, RegisterSaver::raxOffset()*wordSize), rax); |
2467 __ movptr(Address(rsp, RegisterSaver::rdxOffset()*wordSize), rdx); | |
0 | 2468 |
2469 __ bind(noException); | |
2470 | |
2471 // Stack is back to only having register save data on the stack. | |
2472 // Now restore the result registers. Everything else is either dead or captured | |
2473 // in the vframeArray. | |
2474 | |
2475 RegisterSaver::restore_result_registers(masm); | |
2476 | |
926
c8e2135f7e30
6829127: Deoptimization Failure on Specjvm98 _227_mtrt with -XX:+DeoptimizeALot since Hs11 b01
cfang
parents:
628
diff
changeset
|
2477 // Non standard control word may be leaked out through a safepoint blob, and we can |
c8e2135f7e30
6829127: Deoptimization Failure on Specjvm98 _227_mtrt with -XX:+DeoptimizeALot since Hs11 b01
cfang
parents:
628
diff
changeset
|
2478 // deopt at a poll point with the non standard control word. However, we should make |
c8e2135f7e30
6829127: Deoptimization Failure on Specjvm98 _227_mtrt with -XX:+DeoptimizeALot since Hs11 b01
cfang
parents:
628
diff
changeset
|
2479 // sure the control word is correct after restore_result_registers. |
c8e2135f7e30
6829127: Deoptimization Failure on Specjvm98 _227_mtrt with -XX:+DeoptimizeALot since Hs11 b01
cfang
parents:
628
diff
changeset
|
2480 __ fldcw(ExternalAddress(StubRoutines::addr_fpu_cntrl_wrd_std())); |
c8e2135f7e30
6829127: Deoptimization Failure on Specjvm98 _227_mtrt with -XX:+DeoptimizeALot since Hs11 b01
cfang
parents:
628
diff
changeset
|
2481 |
0 | 2482 // All of the register save area has been popped of the stack. Only the |
2483 // return address remains. | |
2484 | |
2485 // Pop all the frames we must move/replace. | |
2486 // | |
2487 // Frame picture (youngest to oldest) | |
2488 // 1: self-frame (no frame link) | |
2489 // 2: deopting frame (no frame link) | |
2490 // 3: caller of deopting frame (could be compiled/interpreted). | |
2491 // | |
2492 // Note: by leaving the return address of self-frame on the stack | |
2493 // and using the size of frame 2 to adjust the stack | |
2494 // when we are done the return to frame 3 will still be on the stack. | |
2495 | |
2496 // Pop deoptimized frame | |
304 | 2497 __ addptr(rsp, Address(rdi,Deoptimization::UnrollBlock::size_of_deoptimized_frame_offset_in_bytes())); |
0 | 2498 |
2499 // sp should be pointing at the return address to the caller (3) | |
2500 | |
2501 // Stack bang to make sure there's enough room for these interpreter frames. | |
2502 if (UseStackBanging) { | |
2503 __ movl(rbx, Address(rdi ,Deoptimization::UnrollBlock::total_frame_sizes_offset_in_bytes())); | |
2504 __ bang_stack_size(rbx, rcx); | |
2505 } | |
2506 | |
2507 // Load array of frame pcs into ECX | |
304 | 2508 __ movptr(rcx,Address(rdi,Deoptimization::UnrollBlock::frame_pcs_offset_in_bytes())); |
2509 | |
2510 __ pop(rsi); // trash the old pc | |
0 | 2511 |
2512 // Load array of frame sizes into ESI | |
304 | 2513 __ movptr(rsi,Address(rdi,Deoptimization::UnrollBlock::frame_sizes_offset_in_bytes())); |
0 | 2514 |
2515 Address counter(rdi, Deoptimization::UnrollBlock::counter_temp_offset_in_bytes()); | |
2516 | |
2517 __ movl(rbx, Address(rdi, Deoptimization::UnrollBlock::number_of_frames_offset_in_bytes())); | |
2518 __ movl(counter, rbx); | |
2519 | |
2520 // Pick up the initial fp we should save | |
304 | 2521 __ movptr(rbp, Address(rdi, Deoptimization::UnrollBlock::initial_fp_offset_in_bytes())); |
0 | 2522 |
2523 // Now adjust the caller's stack to make up for the extra locals | |
2524 // but record the original sp so that we can save it in the skeletal interpreter | |
2525 // frame and the stack walking of interpreter_sender will get the unextended sp | |
2526 // value and not the "real" sp value. | |
2527 | |
2528 Address sp_temp(rdi, Deoptimization::UnrollBlock::sender_sp_temp_offset_in_bytes()); | |
304 | 2529 __ movptr(sp_temp, rsp); |
2530 __ movl2ptr(rbx, Address(rdi, Deoptimization::UnrollBlock::caller_adjustment_offset_in_bytes())); | |
2531 __ subptr(rsp, rbx); | |
0 | 2532 |
2533 // Push interpreter frames in a loop | |
2534 Label loop; | |
2535 __ bind(loop); | |
304 | 2536 __ movptr(rbx, Address(rsi, 0)); // Load frame size |
0 | 2537 #ifdef CC_INTERP |
304 | 2538 __ subptr(rbx, 4*wordSize); // we'll push pc and ebp by hand and |
0 | 2539 #ifdef ASSERT |
304 | 2540 __ push(0xDEADDEAD); // Make a recognizable pattern |
2541 __ push(0xDEADDEAD); | |
0 | 2542 #else /* ASSERT */ |
304 | 2543 __ subptr(rsp, 2*wordSize); // skip the "static long no_param" |
0 | 2544 #endif /* ASSERT */ |
2545 #else /* CC_INTERP */ | |
304 | 2546 __ subptr(rbx, 2*wordSize); // we'll push pc and rbp, by hand |
0 | 2547 #endif /* CC_INTERP */ |
304 | 2548 __ pushptr(Address(rcx, 0)); // save return address |
0 | 2549 __ enter(); // save old & set new rbp, |
304 | 2550 __ subptr(rsp, rbx); // Prolog! |
2551 __ movptr(rbx, sp_temp); // sender's sp | |
0 | 2552 #ifdef CC_INTERP |
304 | 2553 __ movptr(Address(rbp, |
0 | 2554 -(sizeof(BytecodeInterpreter)) + in_bytes(byte_offset_of(BytecodeInterpreter, _sender_sp))), |
2555 rbx); // Make it walkable | |
2556 #else /* CC_INTERP */ | |
2557 // This value is corrected by layout_activation_impl | |
512
db4caa99ef11
6787106: Hotspot 32 bit build fails on platforms having different definitions for intptr_t & int32_t
xlu
parents:
304
diff
changeset
|
2558 __ movptr(Address(rbp, frame::interpreter_frame_last_sp_offset * wordSize), NULL_WORD); |
304 | 2559 __ movptr(Address(rbp, frame::interpreter_frame_sender_sp_offset * wordSize), rbx); // Make it walkable |
0 | 2560 #endif /* CC_INTERP */ |
304 | 2561 __ movptr(sp_temp, rsp); // pass to next frame |
2562 __ addptr(rsi, wordSize); // Bump array pointer (sizes) | |
2563 __ addptr(rcx, wordSize); // Bump array pointer (pcs) | |
2564 __ decrementl(counter); // decrement counter | |
0 | 2565 __ jcc(Assembler::notZero, loop); |
304 | 2566 __ pushptr(Address(rcx, 0)); // save final return address |
0 | 2567 |
2568 // Re-push self-frame | |
2569 __ enter(); // save old & set new rbp, | |
2570 | |
2571 // Return address and rbp, are in place | |
2572 // We'll push additional args later. Just allocate a full sized | |
2573 // register save area | |
304 | 2574 __ subptr(rsp, (frame_size_in_words-additional_words - 2) * wordSize); |
0 | 2575 |
2576 // Restore frame locals after moving the frame | |
304 | 2577 __ movptr(Address(rsp, RegisterSaver::raxOffset()*wordSize), rax); |
2578 __ movptr(Address(rsp, RegisterSaver::rdxOffset()*wordSize), rdx); | |
0 | 2579 __ fstp_d(Address(rsp, RegisterSaver::fpResultOffset()*wordSize)); // Pop float stack and store in local |
2580 if( UseSSE>=2 ) __ movdbl(Address(rsp, RegisterSaver::xmm0Offset()*wordSize), xmm0); | |
2581 if( UseSSE==1 ) __ movflt(Address(rsp, RegisterSaver::xmm0Offset()*wordSize), xmm0); | |
2582 | |
2583 // Set up the args to unpack_frame | |
2584 | |
2585 __ pushl(unpack_kind); // get the unpack_kind value | |
2586 __ get_thread(rcx); | |
304 | 2587 __ push(rcx); |
0 | 2588 |
2589 // set last_Java_sp, last_Java_fp | |
2590 __ set_last_Java_frame(rcx, noreg, rbp, NULL); | |
2591 | |
2592 // Call C code. Need thread but NOT official VM entry | |
2593 // crud. We cannot block on this call, no GC can happen. Call should | |
2594 // restore return values to their stack-slots with the new SP. | |
2595 __ call(RuntimeAddress(CAST_FROM_FN_PTR(address, Deoptimization::unpack_frames))); | |
2596 // Set an oopmap for the call site | |
2597 oop_maps->add_gc_map( __ pc()-start, new OopMap( frame_size_in_words, 0 )); | |
2598 | |
2599 // rax, contains the return result type | |
304 | 2600 __ push(rax); |
0 | 2601 |
2602 __ get_thread(rcx); | |
2603 __ reset_last_Java_frame(rcx, false, false); | |
2604 | |
2605 // Collect return values | |
304 | 2606 __ movptr(rax,Address(rsp, (RegisterSaver::raxOffset() + additional_words + 1)*wordSize)); |
2607 __ movptr(rdx,Address(rsp, (RegisterSaver::rdxOffset() + additional_words + 1)*wordSize)); | |
0 | 2608 |
2609 // Clear floating point stack before returning to interpreter | |
2610 __ empty_FPU_stack(); | |
2611 | |
2612 // Check if we should push the float or double return value. | |
2613 Label results_done, yes_double_value; | |
2614 __ cmpl(Address(rsp, 0), T_DOUBLE); | |
2615 __ jcc (Assembler::zero, yes_double_value); | |
2616 __ cmpl(Address(rsp, 0), T_FLOAT); | |
2617 __ jcc (Assembler::notZero, results_done); | |
2618 | |
2619 // return float value as expected by interpreter | |
2620 if( UseSSE>=1 ) __ movflt(xmm0, Address(rsp, (RegisterSaver::xmm0Offset() + additional_words + 1)*wordSize)); | |
2621 else __ fld_d(Address(rsp, (RegisterSaver::fpResultOffset() + additional_words + 1)*wordSize)); | |
2622 __ jmp(results_done); | |
2623 | |
2624 // return double value as expected by interpreter | |
2625 __ bind(yes_double_value); | |
2626 if( UseSSE>=2 ) __ movdbl(xmm0, Address(rsp, (RegisterSaver::xmm0Offset() + additional_words + 1)*wordSize)); | |
2627 else __ fld_d(Address(rsp, (RegisterSaver::fpResultOffset() + additional_words + 1)*wordSize)); | |
2628 | |
2629 __ bind(results_done); | |
2630 | |
2631 // Pop self-frame. | |
2632 __ leave(); // Epilog! | |
2633 | |
2634 // Jump to interpreter | |
2635 __ ret(0); | |
2636 | |
2637 // ------------- | |
2638 // make sure all code is generated | |
2639 masm->flush(); | |
2640 | |
2641 _deopt_blob = DeoptimizationBlob::create( &buffer, oop_maps, 0, exception_offset, reexecute_offset, frame_size_in_words); | |
2642 _deopt_blob->set_unpack_with_exception_in_tls_offset(exception_in_tls_offset); | |
2643 } | |
2644 | |
2645 | |
2646 #ifdef COMPILER2 | |
2647 //------------------------------generate_uncommon_trap_blob-------------------- | |
2648 void SharedRuntime::generate_uncommon_trap_blob() { | |
2649 // allocate space for the code | |
2650 ResourceMark rm; | |
2651 // setup code generation tools | |
2652 CodeBuffer buffer("uncommon_trap_blob", 512, 512); | |
2653 MacroAssembler* masm = new MacroAssembler(&buffer); | |
2654 | |
2655 enum frame_layout { | |
2656 arg0_off, // thread sp + 0 // Arg location for | |
2657 arg1_off, // unloaded_class_index sp + 1 // calling C | |
2658 // The frame sender code expects that rbp will be in the "natural" place and | |
2659 // will override any oopMap setting for it. We must therefore force the layout | |
2660 // so that it agrees with the frame sender code. | |
2661 rbp_off, // callee saved register sp + 2 | |
2662 return_off, // slot for return address sp + 3 | |
2663 framesize | |
2664 }; | |
2665 | |
2666 address start = __ pc(); | |
2667 // Push self-frame. | |
304 | 2668 __ subptr(rsp, return_off*wordSize); // Epilog! |
0 | 2669 |
2670 // rbp, is an implicitly saved callee saved register (i.e. the calling | |
2671 // convention will save restore it in prolog/epilog) Other than that | |
2672 // there are no callee save registers no that adapter frames are gone. | |
304 | 2673 __ movptr(Address(rsp, rbp_off*wordSize), rbp); |
0 | 2674 |
2675 // Clear the floating point exception stack | |
2676 __ empty_FPU_stack(); | |
2677 | |
2678 // set last_Java_sp | |
2679 __ get_thread(rdx); | |
2680 __ set_last_Java_frame(rdx, noreg, noreg, NULL); | |
2681 | |
2682 // Call C code. Need thread but NOT official VM entry | |
2683 // crud. We cannot block on this call, no GC can happen. Call should | |
2684 // capture callee-saved registers as well as return values. | |
304 | 2685 __ movptr(Address(rsp, arg0_off*wordSize), rdx); |
0 | 2686 // argument already in ECX |
2687 __ movl(Address(rsp, arg1_off*wordSize),rcx); | |
2688 __ call(RuntimeAddress(CAST_FROM_FN_PTR(address, Deoptimization::uncommon_trap))); | |
2689 | |
2690 // Set an oopmap for the call site | |
2691 OopMapSet *oop_maps = new OopMapSet(); | |
2692 OopMap* map = new OopMap( framesize, 0 ); | |
2693 // No oopMap for rbp, it is known implicitly | |
2694 | |
2695 oop_maps->add_gc_map( __ pc()-start, map); | |
2696 | |
2697 __ get_thread(rcx); | |
2698 | |
2699 __ reset_last_Java_frame(rcx, false, false); | |
2700 | |
2701 // Load UnrollBlock into EDI | |
304 | 2702 __ movptr(rdi, rax); |
0 | 2703 |
2704 // Pop all the frames we must move/replace. | |
2705 // | |
2706 // Frame picture (youngest to oldest) | |
2707 // 1: self-frame (no frame link) | |
2708 // 2: deopting frame (no frame link) | |
2709 // 3: caller of deopting frame (could be compiled/interpreted). | |
2710 | |
2711 // Pop self-frame. We have no frame, and must rely only on EAX and ESP. | |
304 | 2712 __ addptr(rsp,(framesize-1)*wordSize); // Epilog! |
0 | 2713 |
2714 // Pop deoptimized frame | |
304 | 2715 __ movl2ptr(rcx, Address(rdi,Deoptimization::UnrollBlock::size_of_deoptimized_frame_offset_in_bytes())); |
2716 __ addptr(rsp, rcx); | |
0 | 2717 |
2718 // sp should be pointing at the return address to the caller (3) | |
2719 | |
2720 // Stack bang to make sure there's enough room for these interpreter frames. | |
2721 if (UseStackBanging) { | |
2722 __ movl(rbx, Address(rdi ,Deoptimization::UnrollBlock::total_frame_sizes_offset_in_bytes())); | |
2723 __ bang_stack_size(rbx, rcx); | |
2724 } | |
2725 | |
2726 | |
2727 // Load array of frame pcs into ECX | |
2728 __ movl(rcx,Address(rdi,Deoptimization::UnrollBlock::frame_pcs_offset_in_bytes())); | |
2729 | |
304 | 2730 __ pop(rsi); // trash the pc |
0 | 2731 |
2732 // Load array of frame sizes into ESI | |
304 | 2733 __ movptr(rsi,Address(rdi,Deoptimization::UnrollBlock::frame_sizes_offset_in_bytes())); |
0 | 2734 |
2735 Address counter(rdi, Deoptimization::UnrollBlock::counter_temp_offset_in_bytes()); | |
2736 | |
2737 __ movl(rbx, Address(rdi, Deoptimization::UnrollBlock::number_of_frames_offset_in_bytes())); | |
2738 __ movl(counter, rbx); | |
2739 | |
2740 // Pick up the initial fp we should save | |
304 | 2741 __ movptr(rbp, Address(rdi, Deoptimization::UnrollBlock::initial_fp_offset_in_bytes())); |
0 | 2742 |
2743 // Now adjust the caller's stack to make up for the extra locals | |
2744 // but record the original sp so that we can save it in the skeletal interpreter | |
2745 // frame and the stack walking of interpreter_sender will get the unextended sp | |
2746 // value and not the "real" sp value. | |
2747 | |
2748 Address sp_temp(rdi, Deoptimization::UnrollBlock::sender_sp_temp_offset_in_bytes()); | |
304 | 2749 __ movptr(sp_temp, rsp); |
2750 __ movl(rbx, Address(rdi, Deoptimization::UnrollBlock::caller_adjustment_offset_in_bytes())); | |
2751 __ subptr(rsp, rbx); | |
0 | 2752 |
2753 // Push interpreter frames in a loop | |
2754 Label loop; | |
2755 __ bind(loop); | |
304 | 2756 __ movptr(rbx, Address(rsi, 0)); // Load frame size |
0 | 2757 #ifdef CC_INTERP |
304 | 2758 __ subptr(rbx, 4*wordSize); // we'll push pc and ebp by hand and |
0 | 2759 #ifdef ASSERT |
304 | 2760 __ push(0xDEADDEAD); // Make a recognizable pattern |
2761 __ push(0xDEADDEAD); // (parm to RecursiveInterpreter...) | |
0 | 2762 #else /* ASSERT */ |
304 | 2763 __ subptr(rsp, 2*wordSize); // skip the "static long no_param" |
0 | 2764 #endif /* ASSERT */ |
2765 #else /* CC_INTERP */ | |
304 | 2766 __ subptr(rbx, 2*wordSize); // we'll push pc and rbp, by hand |
0 | 2767 #endif /* CC_INTERP */ |
304 | 2768 __ pushptr(Address(rcx, 0)); // save return address |
0 | 2769 __ enter(); // save old & set new rbp, |
304 | 2770 __ subptr(rsp, rbx); // Prolog! |
2771 __ movptr(rbx, sp_temp); // sender's sp | |
0 | 2772 #ifdef CC_INTERP |
304 | 2773 __ movptr(Address(rbp, |
0 | 2774 -(sizeof(BytecodeInterpreter)) + in_bytes(byte_offset_of(BytecodeInterpreter, _sender_sp))), |
2775 rbx); // Make it walkable | |
2776 #else /* CC_INTERP */ | |
2777 // This value is corrected by layout_activation_impl | |
512
db4caa99ef11
6787106: Hotspot 32 bit build fails on platforms having different definitions for intptr_t & int32_t
xlu
parents:
304
diff
changeset
|
2778 __ movptr(Address(rbp, frame::interpreter_frame_last_sp_offset * wordSize), NULL_WORD ); |
304 | 2779 __ movptr(Address(rbp, frame::interpreter_frame_sender_sp_offset * wordSize), rbx); // Make it walkable |
0 | 2780 #endif /* CC_INTERP */ |
304 | 2781 __ movptr(sp_temp, rsp); // pass to next frame |
2782 __ addptr(rsi, wordSize); // Bump array pointer (sizes) | |
2783 __ addptr(rcx, wordSize); // Bump array pointer (pcs) | |
2784 __ decrementl(counter); // decrement counter | |
0 | 2785 __ jcc(Assembler::notZero, loop); |
304 | 2786 __ pushptr(Address(rcx, 0)); // save final return address |
0 | 2787 |
2788 // Re-push self-frame | |
2789 __ enter(); // save old & set new rbp, | |
304 | 2790 __ subptr(rsp, (framesize-2) * wordSize); // Prolog! |
0 | 2791 |
2792 | |
2793 // set last_Java_sp, last_Java_fp | |
2794 __ get_thread(rdi); | |
2795 __ set_last_Java_frame(rdi, noreg, rbp, NULL); | |
2796 | |
2797 // Call C code. Need thread but NOT official VM entry | |
2798 // crud. We cannot block on this call, no GC can happen. Call should | |
2799 // restore return values to their stack-slots with the new SP. | |
304 | 2800 __ movptr(Address(rsp,arg0_off*wordSize),rdi); |
0 | 2801 __ movl(Address(rsp,arg1_off*wordSize), Deoptimization::Unpack_uncommon_trap); |
2802 __ call(RuntimeAddress(CAST_FROM_FN_PTR(address, Deoptimization::unpack_frames))); | |
2803 // Set an oopmap for the call site | |
2804 oop_maps->add_gc_map( __ pc()-start, new OopMap( framesize, 0 ) ); | |
2805 | |
2806 __ get_thread(rdi); | |
2807 __ reset_last_Java_frame(rdi, true, false); | |
2808 | |
2809 // Pop self-frame. | |
2810 __ leave(); // Epilog! | |
2811 | |
2812 // Jump to interpreter | |
2813 __ ret(0); | |
2814 | |
2815 // ------------- | |
2816 // make sure all code is generated | |
2817 masm->flush(); | |
2818 | |
2819 _uncommon_trap_blob = UncommonTrapBlob::create(&buffer, oop_maps, framesize); | |
2820 } | |
2821 #endif // COMPILER2 | |
2822 | |
2823 //------------------------------generate_handler_blob------ | |
2824 // | |
2825 // Generate a special Compile2Runtime blob that saves all registers, | |
2826 // setup oopmap, and calls safepoint code to stop the compiled code for | |
2827 // a safepoint. | |
2828 // | |
2829 static SafepointBlob* generate_handler_blob(address call_ptr, bool cause_return) { | |
2830 | |
2831 // Account for thread arg in our frame | |
2832 const int additional_words = 1; | |
2833 int frame_size_in_words; | |
2834 | |
2835 assert (StubRoutines::forward_exception_entry() != NULL, "must be generated before"); | |
2836 | |
2837 ResourceMark rm; | |
2838 OopMapSet *oop_maps = new OopMapSet(); | |
2839 OopMap* map; | |
2840 | |
2841 // allocate space for the code | |
2842 // setup code generation tools | |
2843 CodeBuffer buffer("handler_blob", 1024, 512); | |
2844 MacroAssembler* masm = new MacroAssembler(&buffer); | |
2845 | |
2846 const Register java_thread = rdi; // callee-saved for VC++ | |
2847 address start = __ pc(); | |
2848 address call_pc = NULL; | |
2849 | |
2850 // If cause_return is true we are at a poll_return and there is | |
2851 // the return address on the stack to the caller on the nmethod | |
2852 // that is safepoint. We can leave this return on the stack and | |
2853 // effectively complete the return and safepoint in the caller. | |
2854 // Otherwise we push space for a return address that the safepoint | |
2855 // handler will install later to make the stack walking sensible. | |
2856 if( !cause_return ) | |
304 | 2857 __ push(rbx); // Make room for return address (or push it again) |
0 | 2858 |
2859 map = RegisterSaver::save_live_registers(masm, additional_words, &frame_size_in_words, false); | |
2860 | |
2861 // The following is basically a call_VM. However, we need the precise | |
2862 // address of the call in order to generate an oopmap. Hence, we do all the | |
2863 // work ourselves. | |
2864 | |
2865 // Push thread argument and setup last_Java_sp | |
2866 __ get_thread(java_thread); | |
304 | 2867 __ push(java_thread); |
0 | 2868 __ set_last_Java_frame(java_thread, noreg, noreg, NULL); |
2869 | |
2870 // if this was not a poll_return then we need to correct the return address now. | |
2871 if( !cause_return ) { | |
304 | 2872 __ movptr(rax, Address(java_thread, JavaThread::saved_exception_pc_offset())); |
2873 __ movptr(Address(rbp, wordSize), rax); | |
0 | 2874 } |
2875 | |
2876 // do the call | |
2877 __ call(RuntimeAddress(call_ptr)); | |
2878 | |
2879 // Set an oopmap for the call site. This oopmap will map all | |
2880 // oop-registers and debug-info registers as callee-saved. This | |
2881 // will allow deoptimization at this safepoint to find all possible | |
2882 // debug-info recordings, as well as let GC find all oops. | |
2883 | |
2884 oop_maps->add_gc_map( __ pc() - start, map); | |
2885 | |
2886 // Discard arg | |
304 | 2887 __ pop(rcx); |
0 | 2888 |
2889 Label noException; | |
2890 | |
2891 // Clear last_Java_sp again | |
2892 __ get_thread(java_thread); | |
2893 __ reset_last_Java_frame(java_thread, false, false); | |
2894 | |
304 | 2895 __ cmpptr(Address(java_thread, Thread::pending_exception_offset()), (int32_t)NULL_WORD); |
0 | 2896 __ jcc(Assembler::equal, noException); |
2897 | |
2898 // Exception pending | |
2899 | |
2900 RegisterSaver::restore_live_registers(masm); | |
2901 | |
2902 __ jump(RuntimeAddress(StubRoutines::forward_exception_entry())); | |
2903 | |
2904 __ bind(noException); | |
2905 | |
2906 // Normal exit, register restoring and exit | |
2907 RegisterSaver::restore_live_registers(masm); | |
2908 | |
2909 __ ret(0); | |
2910 | |
2911 // make sure all code is generated | |
2912 masm->flush(); | |
2913 | |
2914 // Fill-out other meta info | |
2915 return SafepointBlob::create(&buffer, oop_maps, frame_size_in_words); | |
2916 } | |
2917 | |
2918 // | |
2919 // generate_resolve_blob - call resolution (static/virtual/opt-virtual/ic-miss | |
2920 // | |
2921 // Generate a stub that calls into vm to find out the proper destination | |
2922 // of a java call. All the argument registers are live at this point | |
2923 // but since this is generic code we don't know what they are and the caller | |
2924 // must do any gc of the args. | |
2925 // | |
2926 static RuntimeStub* generate_resolve_blob(address destination, const char* name) { | |
2927 assert (StubRoutines::forward_exception_entry() != NULL, "must be generated before"); | |
2928 | |
2929 // allocate space for the code | |
2930 ResourceMark rm; | |
2931 | |
2932 CodeBuffer buffer(name, 1000, 512); | |
2933 MacroAssembler* masm = new MacroAssembler(&buffer); | |
2934 | |
2935 int frame_size_words; | |
2936 enum frame_layout { | |
2937 thread_off, | |
2938 extra_words }; | |
2939 | |
2940 OopMapSet *oop_maps = new OopMapSet(); | |
2941 OopMap* map = NULL; | |
2942 | |
2943 int start = __ offset(); | |
2944 | |
2945 map = RegisterSaver::save_live_registers(masm, extra_words, &frame_size_words); | |
2946 | |
2947 int frame_complete = __ offset(); | |
2948 | |
2949 const Register thread = rdi; | |
2950 __ get_thread(rdi); | |
2951 | |
304 | 2952 __ push(thread); |
0 | 2953 __ set_last_Java_frame(thread, noreg, rbp, NULL); |
2954 | |
2955 __ call(RuntimeAddress(destination)); | |
2956 | |
2957 | |
2958 // Set an oopmap for the call site. | |
2959 // We need this not only for callee-saved registers, but also for volatile | |
2960 // registers that the compiler might be keeping live across a safepoint. | |
2961 | |
2962 oop_maps->add_gc_map( __ offset() - start, map); | |
2963 | |
2964 // rax, contains the address we are going to jump to assuming no exception got installed | |
2965 | |
304 | 2966 __ addptr(rsp, wordSize); |
0 | 2967 |
2968 // clear last_Java_sp | |
2969 __ reset_last_Java_frame(thread, true, false); | |
2970 // check for pending exceptions | |
2971 Label pending; | |
304 | 2972 __ cmpptr(Address(thread, Thread::pending_exception_offset()), (int32_t)NULL_WORD); |
0 | 2973 __ jcc(Assembler::notEqual, pending); |
2974 | |
2975 // get the returned methodOop | |
304 | 2976 __ movptr(rbx, Address(thread, JavaThread::vm_result_offset())); |
2977 __ movptr(Address(rsp, RegisterSaver::rbx_offset() * wordSize), rbx); | |
2978 | |
2979 __ movptr(Address(rsp, RegisterSaver::rax_offset() * wordSize), rax); | |
0 | 2980 |
2981 RegisterSaver::restore_live_registers(masm); | |
2982 | |
2983 // We are back the the original state on entry and ready to go. | |
2984 | |
2985 __ jmp(rax); | |
2986 | |
2987 // Pending exception after the safepoint | |
2988 | |
2989 __ bind(pending); | |
2990 | |
2991 RegisterSaver::restore_live_registers(masm); | |
2992 | |
2993 // exception pending => remove activation and forward to exception handler | |
2994 | |
2995 __ get_thread(thread); | |
512
db4caa99ef11
6787106: Hotspot 32 bit build fails on platforms having different definitions for intptr_t & int32_t
xlu
parents:
304
diff
changeset
|
2996 __ movptr(Address(thread, JavaThread::vm_result_offset()), NULL_WORD); |
304 | 2997 __ movptr(rax, Address(thread, Thread::pending_exception_offset())); |
0 | 2998 __ jump(RuntimeAddress(StubRoutines::forward_exception_entry())); |
2999 | |
3000 // ------------- | |
3001 // make sure all code is generated | |
3002 masm->flush(); | |
3003 | |
3004 // return the blob | |
3005 // frame_size_words or bytes?? | |
3006 return RuntimeStub::new_runtime_stub(name, &buffer, frame_complete, frame_size_words, oop_maps, true); | |
3007 } | |
3008 | |
3009 void SharedRuntime::generate_stubs() { | |
3010 | |
3011 _wrong_method_blob = generate_resolve_blob(CAST_FROM_FN_PTR(address, SharedRuntime::handle_wrong_method), | |
3012 "wrong_method_stub"); | |
3013 | |
3014 _ic_miss_blob = generate_resolve_blob(CAST_FROM_FN_PTR(address, SharedRuntime::handle_wrong_method_ic_miss), | |
3015 "ic_miss_stub"); | |
3016 | |
3017 _resolve_opt_virtual_call_blob = generate_resolve_blob(CAST_FROM_FN_PTR(address, SharedRuntime::resolve_opt_virtual_call_C), | |
3018 "resolve_opt_virtual_call"); | |
3019 | |
3020 _resolve_virtual_call_blob = generate_resolve_blob(CAST_FROM_FN_PTR(address, SharedRuntime::resolve_virtual_call_C), | |
3021 "resolve_virtual_call"); | |
3022 | |
3023 _resolve_static_call_blob = generate_resolve_blob(CAST_FROM_FN_PTR(address, SharedRuntime::resolve_static_call_C), | |
3024 "resolve_static_call"); | |
3025 | |
3026 _polling_page_safepoint_handler_blob = | |
3027 generate_handler_blob(CAST_FROM_FN_PTR(address, | |
3028 SafepointSynchronize::handle_polling_page_exception), false); | |
3029 | |
3030 _polling_page_return_handler_blob = | |
3031 generate_handler_blob(CAST_FROM_FN_PTR(address, | |
3032 SafepointSynchronize::handle_polling_page_exception), true); | |
3033 | |
3034 generate_deopt_blob(); | |
3035 #ifdef COMPILER2 | |
3036 generate_uncommon_trap_blob(); | |
3037 #endif // COMPILER2 | |
3038 } |