Mercurial > hg > truffle
annotate src/cpu/sparc/vm/nativeInst_sparc.hpp @ 14263:30f8cd8b43dd
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author | anoll |
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date | Tue, 14 Jan 2014 21:33:33 -0800 |
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0 | 1 /* |
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2 * Copyright (c) 1997, 2013, 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 * | |
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19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
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20 * or visit www.oracle.com if you need additional information or have any |
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21 * questions. |
0 | 22 * |
23 */ | |
24 | |
1972 | 25 #ifndef CPU_SPARC_VM_NATIVEINST_SPARC_HPP |
26 #define CPU_SPARC_VM_NATIVEINST_SPARC_HPP | |
27 | |
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28 #include "asm/macroAssembler.hpp" |
1972 | 29 #include "memory/allocation.hpp" |
30 #include "runtime/icache.hpp" | |
31 #include "runtime/os.hpp" | |
32 #include "utilities/top.hpp" | |
33 | |
0 | 34 // We have interface for the following instructions: |
35 // - NativeInstruction | |
36 // - - NativeCall | |
37 // - - NativeFarCall | |
38 // - - NativeMovConstReg | |
39 // - - NativeMovConstRegPatching | |
40 // - - NativeMovRegMem | |
41 // - - NativeMovRegMemPatching | |
42 // - - NativeJump | |
43 // - - NativeGeneralJump | |
44 // - - NativeIllegalInstruction | |
45 // The base class for different kinds of native instruction abstractions. | |
46 // Provides the primitive operations to manipulate code relative to this. | |
47 class NativeInstruction VALUE_OBJ_CLASS_SPEC { | |
48 friend class Relocation; | |
49 | |
50 public: | |
51 enum Sparc_specific_constants { | |
52 nop_instruction_size = 4 | |
53 }; | |
54 | |
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55 bool is_dtrace_trap(); |
0 | 56 bool is_nop() { return long_at(0) == nop_instruction(); } |
57 bool is_call() { return is_op(long_at(0), Assembler::call_op); } | |
58 bool is_sethi() { return (is_op2(long_at(0), Assembler::sethi_op2) | |
59 && inv_rd(long_at(0)) != G0); } | |
60 | |
61 bool sets_cc() { | |
62 // conservative (returns true for some instructions that do not set the | |
63 // the condition code, such as, "save". | |
64 // Does not return true for the deprecated tagged instructions, such as, TADDcc | |
65 int x = long_at(0); | |
66 return (is_op(x, Assembler::arith_op) && | |
67 (inv_op3(x) & Assembler::cc_bit_op3) == Assembler::cc_bit_op3); | |
68 } | |
69 bool is_illegal(); | |
70 bool is_zombie() { | |
71 int x = long_at(0); | |
72 return is_op3(x, | |
10997 | 73 Assembler::ldsw_op3, |
0 | 74 Assembler::ldst_op) |
75 && Assembler::inv_rs1(x) == G0 | |
76 && Assembler::inv_rd(x) == O7; | |
77 } | |
78 bool is_ic_miss_trap(); // Inline-cache uses a trap to detect a miss | |
79 bool is_return() { | |
80 // is it the output of MacroAssembler::ret or MacroAssembler::retl? | |
81 int x = long_at(0); | |
82 const int pc_return_offset = 8; // see frame_sparc.hpp | |
83 return is_op3(x, Assembler::jmpl_op3, Assembler::arith_op) | |
84 && (inv_rs1(x) == I7 || inv_rs1(x) == O7) | |
85 && inv_immed(x) && inv_simm(x, 13) == pc_return_offset | |
86 && inv_rd(x) == G0; | |
87 } | |
88 bool is_int_jump() { | |
89 // is it the output of MacroAssembler::b? | |
90 int x = long_at(0); | |
91 return is_op2(x, Assembler::bp_op2) || is_op2(x, Assembler::br_op2); | |
92 } | |
93 bool is_float_jump() { | |
94 // is it the output of MacroAssembler::fb? | |
95 int x = long_at(0); | |
96 return is_op2(x, Assembler::fbp_op2) || is_op2(x, Assembler::fb_op2); | |
97 } | |
98 bool is_jump() { | |
99 return is_int_jump() || is_float_jump(); | |
100 } | |
101 bool is_cond_jump() { | |
102 int x = long_at(0); | |
103 return (is_int_jump() && Assembler::inv_cond(x) != Assembler::always) || | |
104 (is_float_jump() && Assembler::inv_cond(x) != Assembler::f_always); | |
105 } | |
106 | |
107 bool is_stack_bang() { | |
108 int x = long_at(0); | |
109 return is_op3(x, Assembler::stw_op3, Assembler::ldst_op) && | |
110 (inv_rd(x) == G0) && (inv_rs1(x) == SP) && (inv_rs2(x) == G3_scratch); | |
111 } | |
112 | |
113 bool is_prefetch() { | |
114 int x = long_at(0); | |
115 return is_op3(x, Assembler::prefetch_op3, Assembler::ldst_op); | |
116 } | |
117 | |
118 bool is_membar() { | |
119 int x = long_at(0); | |
120 return is_op3(x, Assembler::membar_op3, Assembler::arith_op) && | |
121 (inv_rd(x) == G0) && (inv_rs1(x) == O7); | |
122 } | |
123 | |
124 bool is_safepoint_poll() { | |
125 int x = long_at(0); | |
126 #ifdef _LP64 | |
127 return is_op3(x, Assembler::ldx_op3, Assembler::ldst_op) && | |
128 #else | |
129 return is_op3(x, Assembler::lduw_op3, Assembler::ldst_op) && | |
130 #endif | |
131 (inv_rd(x) == G0) && (inv_immed(x) ? Assembler::inv_simm13(x) == 0 : inv_rs2(x) == G0); | |
132 } | |
133 | |
134 bool is_zero_test(Register ®); | |
135 bool is_load_store_with_small_offset(Register reg); | |
136 | |
137 public: | |
138 #ifdef ASSERT | |
139 static int rdpc_instruction() { return Assembler::op(Assembler::arith_op ) | Assembler::op3(Assembler::rdreg_op3) | Assembler::u_field(5, 18, 14) | Assembler::rd(O7); } | |
140 #else | |
141 // Temporary fix: in optimized mode, u_field is a macro for efficiency reasons (see Assembler::u_field) - needs to be fixed | |
142 static int rdpc_instruction() { return Assembler::op(Assembler::arith_op ) | Assembler::op3(Assembler::rdreg_op3) | u_field(5, 18, 14) | Assembler::rd(O7); } | |
143 #endif | |
144 static int nop_instruction() { return Assembler::op(Assembler::branch_op) | Assembler::op2(Assembler::sethi_op2); } | |
145 static int illegal_instruction(); // the output of __ breakpoint_trap() | |
146 static int call_instruction(address destination, address pc) { return Assembler::op(Assembler::call_op) | Assembler::wdisp((intptr_t)destination, (intptr_t)pc, 30); } | |
147 | |
148 static int branch_instruction(Assembler::op2s op2val, Assembler::Condition c, bool a) { | |
149 return Assembler::op(Assembler::branch_op) | Assembler::op2(op2val) | Assembler::annul(a) | Assembler::cond(c); | |
150 } | |
151 | |
152 static int op3_instruction(Assembler::ops opval, Register rd, Assembler::op3s op3val, Register rs1, int simm13a) { | |
153 return Assembler::op(opval) | Assembler::rd(rd) | Assembler::op3(op3val) | Assembler::rs1(rs1) | Assembler::immed(true) | Assembler::simm(simm13a, 13); | |
154 } | |
155 | |
156 static int sethi_instruction(Register rd, int imm22a) { | |
157 return Assembler::op(Assembler::branch_op) | Assembler::rd(rd) | Assembler::op2(Assembler::sethi_op2) | Assembler::hi22(imm22a); | |
158 } | |
159 | |
160 protected: | |
161 address addr_at(int offset) const { return address(this) + offset; } | |
162 int long_at(int offset) const { return *(int*)addr_at(offset); } | |
163 void set_long_at(int offset, int i); /* deals with I-cache */ | |
164 void set_jlong_at(int offset, jlong i); /* deals with I-cache */ | |
165 void set_addr_at(int offset, address x); /* deals with I-cache */ | |
166 | |
167 address instruction_address() const { return addr_at(0); } | |
168 address next_instruction_address() const { return addr_at(BytesPerInstWord); } | |
169 | |
170 static bool is_op( int x, Assembler::ops opval) { | |
171 return Assembler::inv_op(x) == opval; | |
172 } | |
173 static bool is_op2(int x, Assembler::op2s op2val) { | |
174 return Assembler::inv_op(x) == Assembler::branch_op && Assembler::inv_op2(x) == op2val; | |
175 } | |
176 static bool is_op3(int x, Assembler::op3s op3val, Assembler::ops opval) { | |
177 return Assembler::inv_op(x) == opval && Assembler::inv_op3(x) == op3val; | |
178 } | |
179 | |
180 // utilities to help subclasses decode: | |
181 static Register inv_rd( int x ) { return Assembler::inv_rd( x); } | |
182 static Register inv_rs1( int x ) { return Assembler::inv_rs1(x); } | |
183 static Register inv_rs2( int x ) { return Assembler::inv_rs2(x); } | |
184 | |
185 static bool inv_immed( int x ) { return Assembler::inv_immed(x); } | |
186 static bool inv_annul( int x ) { return (Assembler::annul(true) & x) != 0; } | |
187 static int inv_cond( int x ) { return Assembler::inv_cond(x); } | |
188 | |
189 static int inv_op( int x ) { return Assembler::inv_op( x); } | |
190 static int inv_op2( int x ) { return Assembler::inv_op2(x); } | |
191 static int inv_op3( int x ) { return Assembler::inv_op3(x); } | |
192 | |
193 static int inv_simm( int x, int nbits ) { return Assembler::inv_simm(x, nbits); } | |
194 static intptr_t inv_wdisp( int x, int nbits ) { return Assembler::inv_wdisp( x, 0, nbits); } | |
195 static intptr_t inv_wdisp16( int x ) { return Assembler::inv_wdisp16(x, 0); } | |
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196 static int branch_destination_offset(int x) { return MacroAssembler::branch_destination(x, 0); } |
0 | 197 static int patch_branch_destination_offset(int dest_offset, int x) { |
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198 return MacroAssembler::patched_branch(dest_offset, x, 0); |
0 | 199 } |
200 | |
201 // utility for checking if x is either of 2 small constants | |
202 static bool is_either(int x, int k1, int k2) { | |
203 // return x == k1 || x == k2; | |
204 return (1 << x) & (1 << k1 | 1 << k2); | |
205 } | |
206 | |
207 // utility for checking overflow of signed instruction fields | |
208 static bool fits_in_simm(int x, int nbits) { | |
209 // cf. Assembler::assert_signed_range() | |
210 // return -(1 << nbits-1) <= x && x < ( 1 << nbits-1), | |
211 return (unsigned)(x + (1 << nbits-1)) < (unsigned)(1 << nbits); | |
212 } | |
213 | |
214 // set a signed immediate field | |
215 static int set_simm(int insn, int imm, int nbits) { | |
216 return (insn &~ Assembler::simm(-1, nbits)) | Assembler::simm(imm, nbits); | |
217 } | |
218 | |
219 // set a wdisp field (disp should be the difference of two addresses) | |
220 static int set_wdisp(int insn, intptr_t disp, int nbits) { | |
221 return (insn &~ Assembler::wdisp((intptr_t)-4, (intptr_t)0, nbits)) | Assembler::wdisp(disp, 0, nbits); | |
222 } | |
223 | |
224 static int set_wdisp16(int insn, intptr_t disp) { | |
225 return (insn &~ Assembler::wdisp16((intptr_t)-4, 0)) | Assembler::wdisp16(disp, 0); | |
226 } | |
227 | |
228 // get a simm13 field from an arithmetic or memory instruction | |
229 static int get_simm13(int insn) { | |
230 assert(is_either(Assembler::inv_op(insn), | |
231 Assembler::arith_op, Assembler::ldst_op) && | |
232 (insn & Assembler::immed(true)), "must have a simm13 field"); | |
233 return Assembler::inv_simm(insn, 13); | |
234 } | |
235 | |
236 // set the simm13 field of an arithmetic or memory instruction | |
237 static bool set_simm13(int insn, int imm) { | |
238 get_simm13(insn); // tickle the assertion check | |
239 return set_simm(insn, imm, 13); | |
240 } | |
241 | |
242 // combine the fields of a sethi stream (7 instructions ) and an add, jmp or ld/st | |
243 static intptr_t data64( address pc, int arith_insn ) { | |
244 assert(is_op2(*(unsigned int *)pc, Assembler::sethi_op2), "must be sethi"); | |
245 intptr_t hi = (intptr_t)gethi( (unsigned int *)pc ); | |
246 intptr_t lo = (intptr_t)get_simm13(arith_insn); | |
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247 assert((unsigned)lo < (1 << 10), "offset field of set_metadata must be 10 bits"); |
0 | 248 return hi | lo; |
249 } | |
250 | |
251 // Regenerate the instruction sequence that performs the 64 bit | |
252 // sethi. This only does the sethi. The disp field (bottom 10 bits) | |
605 | 253 // must be handled separately. |
0 | 254 static void set_data64_sethi(address instaddr, intptr_t x); |
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255 static void verify_data64_sethi(address instaddr, intptr_t x); |
0 | 256 |
257 // combine the fields of a sethi/simm13 pair (simm13 = or, add, jmpl, ld/st) | |
258 static int data32(int sethi_insn, int arith_insn) { | |
259 assert(is_op2(sethi_insn, Assembler::sethi_op2), "must be sethi"); | |
260 int hi = Assembler::inv_hi22(sethi_insn); | |
261 int lo = get_simm13(arith_insn); | |
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262 assert((unsigned)lo < (1 << 10), "offset field of set_metadata must be 10 bits"); |
0 | 263 return hi | lo; |
264 } | |
265 | |
266 static int set_data32_sethi(int sethi_insn, int imm) { | |
267 // note that Assembler::hi22 clips the low 10 bits for us | |
268 assert(is_op2(sethi_insn, Assembler::sethi_op2), "must be sethi"); | |
269 return (sethi_insn &~ Assembler::hi22(-1)) | Assembler::hi22(imm); | |
270 } | |
271 | |
272 static int set_data32_simm13(int arith_insn, int imm) { | |
273 get_simm13(arith_insn); // tickle the assertion check | |
274 int imm10 = Assembler::low10(imm); | |
275 return (arith_insn &~ Assembler::simm(-1, 13)) | Assembler::simm(imm10, 13); | |
276 } | |
277 | |
278 static int low10(int imm) { | |
279 return Assembler::low10(imm); | |
280 } | |
281 | |
282 // Perform the inverse of the LP64 Macroassembler::sethi | |
283 // routine. Extracts the 54 bits of address from the instruction | |
284 // stream. This routine must agree with the sethi routine in | |
285 // assembler_inline_sparc.hpp | |
286 static address gethi( unsigned int *pc ) { | |
287 int i = 0; | |
288 uintptr_t adr; | |
289 // We first start out with the real sethi instruction | |
290 assert(is_op2(*pc, Assembler::sethi_op2), "in gethi - must be sethi"); | |
291 adr = (unsigned int)Assembler::inv_hi22( *(pc++) ); | |
292 i++; | |
293 while ( i < 7 ) { | |
294 // We're done if we hit a nop | |
295 if ( (int)*pc == nop_instruction() ) break; | |
296 assert ( Assembler::inv_op(*pc) == Assembler::arith_op, "in gethi - must be arith_op" ); | |
297 switch ( Assembler::inv_op3(*pc) ) { | |
298 case Assembler::xor_op3: | |
299 adr ^= (intptr_t)get_simm13( *pc ); | |
300 return ( (address)adr ); | |
301 break; | |
302 case Assembler::sll_op3: | |
303 adr <<= ( *pc & 0x3f ); | |
304 break; | |
305 case Assembler::or_op3: | |
306 adr |= (intptr_t)get_simm13( *pc ); | |
307 break; | |
308 default: | |
309 assert ( 0, "in gethi - Should not reach here" ); | |
310 break; | |
311 } | |
312 pc++; | |
313 i++; | |
314 } | |
315 return ( (address)adr ); | |
316 } | |
317 | |
318 public: | |
319 void verify(); | |
320 void print(); | |
321 | |
322 // unit test stuff | |
323 static void test() {} // override for testing | |
324 | |
325 inline friend NativeInstruction* nativeInstruction_at(address address); | |
326 }; | |
327 | |
328 inline NativeInstruction* nativeInstruction_at(address address) { | |
329 NativeInstruction* inst = (NativeInstruction*)address; | |
330 #ifdef ASSERT | |
331 inst->verify(); | |
332 #endif | |
333 return inst; | |
334 } | |
335 | |
336 | |
337 | |
338 //----------------------------------------------------------------------------- | |
339 | |
340 // The NativeCall is an abstraction for accessing/manipulating native call imm32 instructions. | |
341 // (used to manipulate inline caches, primitive & dll calls, etc.) | |
342 inline NativeCall* nativeCall_at(address instr); | |
343 inline NativeCall* nativeCall_overwriting_at(address instr, | |
344 address destination); | |
345 inline NativeCall* nativeCall_before(address return_address); | |
346 class NativeCall: public NativeInstruction { | |
347 public: | |
348 enum Sparc_specific_constants { | |
349 instruction_size = 8, | |
350 return_address_offset = 8, | |
351 call_displacement_width = 30, | |
352 displacement_offset = 0, | |
353 instruction_offset = 0 | |
354 }; | |
355 address instruction_address() const { return addr_at(0); } | |
356 address next_instruction_address() const { return addr_at(instruction_size); } | |
357 address return_address() const { return addr_at(return_address_offset); } | |
358 | |
359 address destination() const { return inv_wdisp(long_at(0), call_displacement_width) + instruction_address(); } | |
360 address displacement_address() const { return addr_at(displacement_offset); } | |
361 void set_destination(address dest) { set_long_at(0, set_wdisp(long_at(0), dest - instruction_address(), call_displacement_width)); } | |
362 void set_destination_mt_safe(address dest); | |
363 | |
364 void verify_alignment() {} // do nothing on sparc | |
365 void verify(); | |
366 void print(); | |
367 | |
368 // unit test stuff | |
369 static void test(); | |
370 | |
371 // Creation | |
372 friend inline NativeCall* nativeCall_at(address instr); | |
373 friend NativeCall* nativeCall_overwriting_at(address instr, address destination = NULL) { | |
374 // insert a "blank" call: | |
375 NativeCall* call = (NativeCall*)instr; | |
376 call->set_long_at(0 * BytesPerInstWord, call_instruction(destination, instr)); | |
377 call->set_long_at(1 * BytesPerInstWord, nop_instruction()); | |
378 assert(call->addr_at(2 * BytesPerInstWord) - instr == instruction_size, "instruction size"); | |
379 // check its structure now: | |
380 assert(nativeCall_at(instr)->destination() == destination, "correct call destination"); | |
381 return call; | |
382 } | |
383 | |
384 friend inline NativeCall* nativeCall_before(address return_address) { | |
385 NativeCall* call = (NativeCall*)(return_address - return_address_offset); | |
386 #ifdef ASSERT | |
387 call->verify(); | |
388 #endif | |
389 return call; | |
390 } | |
391 | |
392 static bool is_call_at(address instr) { | |
393 return nativeInstruction_at(instr)->is_call(); | |
394 } | |
395 | |
396 static bool is_call_before(address instr) { | |
397 return nativeInstruction_at(instr - return_address_offset)->is_call(); | |
398 } | |
399 | |
400 static bool is_call_to(address instr, address target) { | |
401 return nativeInstruction_at(instr)->is_call() && | |
402 nativeCall_at(instr)->destination() == target; | |
403 } | |
404 | |
405 // MT-safe patching of a call instruction. | |
406 static void insert(address code_pos, address entry) { | |
407 (void)nativeCall_overwriting_at(code_pos, entry); | |
408 } | |
409 | |
410 static void replace_mt_safe(address instr_addr, address code_buffer); | |
411 }; | |
412 inline NativeCall* nativeCall_at(address instr) { | |
413 NativeCall* call = (NativeCall*)instr; | |
414 #ifdef ASSERT | |
415 call->verify(); | |
416 #endif | |
417 return call; | |
418 } | |
419 | |
420 // The NativeFarCall is an abstraction for accessing/manipulating native call-anywhere | |
421 // instructions in the sparcv9 vm. Used to call native methods which may be loaded | |
422 // anywhere in the address space, possibly out of reach of a call instruction. | |
423 | |
424 #ifndef _LP64 | |
425 | |
426 // On 32-bit systems, a far call is the same as a near one. | |
427 class NativeFarCall; | |
428 inline NativeFarCall* nativeFarCall_at(address instr); | |
429 class NativeFarCall : public NativeCall { | |
430 public: | |
431 friend inline NativeFarCall* nativeFarCall_at(address instr) { return (NativeFarCall*)nativeCall_at(instr); } | |
432 friend NativeFarCall* nativeFarCall_overwriting_at(address instr, address destination = NULL) | |
433 { return (NativeFarCall*)nativeCall_overwriting_at(instr, destination); } | |
434 friend NativeFarCall* nativeFarCall_before(address return_address) | |
435 { return (NativeFarCall*)nativeCall_before(return_address); } | |
436 }; | |
437 | |
438 #else | |
439 | |
440 // The format of this extended-range call is: | |
441 // jumpl_to addr, lreg | |
442 // == sethi %hi54(addr), O7 ; jumpl O7, %lo10(addr), O7 ; <delay> | |
443 // That is, it is essentially the same as a NativeJump. | |
444 class NativeFarCall; | |
445 inline NativeFarCall* nativeFarCall_overwriting_at(address instr, address destination); | |
446 inline NativeFarCall* nativeFarCall_at(address instr); | |
447 class NativeFarCall: public NativeInstruction { | |
448 public: | |
449 enum Sparc_specific_constants { | |
450 // instruction_size includes the delay slot instruction. | |
451 instruction_size = 9 * BytesPerInstWord, | |
452 return_address_offset = 9 * BytesPerInstWord, | |
453 jmpl_offset = 7 * BytesPerInstWord, | |
454 displacement_offset = 0, | |
455 instruction_offset = 0 | |
456 }; | |
457 address instruction_address() const { return addr_at(0); } | |
458 address next_instruction_address() const { return addr_at(instruction_size); } | |
459 address return_address() const { return addr_at(return_address_offset); } | |
460 | |
461 address destination() const { | |
462 return (address) data64(addr_at(0), long_at(jmpl_offset)); | |
463 } | |
464 address displacement_address() const { return addr_at(displacement_offset); } | |
465 void set_destination(address dest); | |
466 | |
467 bool destination_is_compiled_verified_entry_point(); | |
468 | |
469 void verify(); | |
470 void print(); | |
471 | |
472 // unit test stuff | |
473 static void test(); | |
474 | |
475 // Creation | |
476 friend inline NativeFarCall* nativeFarCall_at(address instr) { | |
477 NativeFarCall* call = (NativeFarCall*)instr; | |
478 #ifdef ASSERT | |
479 call->verify(); | |
480 #endif | |
481 return call; | |
482 } | |
483 | |
484 friend inline NativeFarCall* nativeFarCall_overwriting_at(address instr, address destination = NULL) { | |
485 Unimplemented(); | |
486 NativeFarCall* call = (NativeFarCall*)instr; | |
487 return call; | |
488 } | |
489 | |
490 friend NativeFarCall* nativeFarCall_before(address return_address) { | |
491 NativeFarCall* call = (NativeFarCall*)(return_address - return_address_offset); | |
492 #ifdef ASSERT | |
493 call->verify(); | |
494 #endif | |
495 return call; | |
496 } | |
497 | |
498 static bool is_call_at(address instr); | |
499 | |
500 // MT-safe patching of a call instruction. | |
501 static void insert(address code_pos, address entry) { | |
502 (void)nativeFarCall_overwriting_at(code_pos, entry); | |
503 } | |
504 static void replace_mt_safe(address instr_addr, address code_buffer); | |
505 }; | |
506 | |
507 #endif // _LP64 | |
508 | |
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509 // An interface for accessing/manipulating native set_metadata imm, reg instructions. |
0 | 510 // (used to manipulate inlined data references, etc.) |
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511 // set_metadata imm, reg |
0 | 512 // == sethi %hi22(imm), reg ; add reg, %lo10(imm), reg |
513 class NativeMovConstReg; | |
514 inline NativeMovConstReg* nativeMovConstReg_at(address address); | |
515 class NativeMovConstReg: public NativeInstruction { | |
516 public: | |
517 enum Sparc_specific_constants { | |
518 sethi_offset = 0, | |
519 #ifdef _LP64 | |
520 add_offset = 7 * BytesPerInstWord, | |
521 instruction_size = 8 * BytesPerInstWord | |
522 #else | |
523 add_offset = 4, | |
524 instruction_size = 8 | |
525 #endif | |
526 }; | |
527 | |
528 address instruction_address() const { return addr_at(0); } | |
529 address next_instruction_address() const { return addr_at(instruction_size); } | |
530 | |
531 // (The [set_]data accessor respects oop_type relocs also.) | |
532 intptr_t data() const; | |
533 void set_data(intptr_t x); | |
534 | |
535 // report the destination register | |
536 Register destination() { return inv_rd(long_at(sethi_offset)); } | |
537 | |
538 void verify(); | |
539 void print(); | |
540 | |
541 // unit test stuff | |
542 static void test(); | |
543 | |
544 // Creation | |
545 friend inline NativeMovConstReg* nativeMovConstReg_at(address address) { | |
546 NativeMovConstReg* test = (NativeMovConstReg*)address; | |
547 #ifdef ASSERT | |
548 test->verify(); | |
549 #endif | |
550 return test; | |
551 } | |
552 | |
553 | |
554 friend NativeMovConstReg* nativeMovConstReg_before(address address) { | |
555 NativeMovConstReg* test = (NativeMovConstReg*)(address - instruction_size); | |
556 #ifdef ASSERT | |
557 test->verify(); | |
558 #endif | |
559 return test; | |
560 } | |
561 | |
562 }; | |
563 | |
564 | |
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565 // An interface for accessing/manipulating native set_metadata imm, reg instructions. |
0 | 566 // (used to manipulate inlined data references, etc.) |
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567 // set_metadata imm, reg |
0 | 568 // == sethi %hi22(imm), reg; nop; add reg, %lo10(imm), reg |
569 // | |
570 // Note that it is identical to NativeMovConstReg with the exception of a nop between the | |
571 // sethi and the add. The nop is required to be in the delay slot of the call instruction | |
572 // which overwrites the sethi during patching. | |
573 class NativeMovConstRegPatching; | |
574 inline NativeMovConstRegPatching* nativeMovConstRegPatching_at(address address);class NativeMovConstRegPatching: public NativeInstruction { | |
575 public: | |
576 enum Sparc_specific_constants { | |
577 sethi_offset = 0, | |
578 #ifdef _LP64 | |
579 nop_offset = 7 * BytesPerInstWord, | |
580 #else | |
581 nop_offset = sethi_offset + BytesPerInstWord, | |
582 #endif | |
583 add_offset = nop_offset + BytesPerInstWord, | |
584 instruction_size = add_offset + BytesPerInstWord | |
585 }; | |
586 | |
587 address instruction_address() const { return addr_at(0); } | |
588 address next_instruction_address() const { return addr_at(instruction_size); } | |
589 | |
590 // (The [set_]data accessor respects oop_type relocs also.) | |
591 int data() const; | |
592 void set_data(int x); | |
593 | |
594 // report the destination register | |
595 Register destination() { return inv_rd(long_at(sethi_offset)); } | |
596 | |
597 void verify(); | |
598 void print(); | |
599 | |
600 // unit test stuff | |
601 static void test(); | |
602 | |
603 // Creation | |
604 friend inline NativeMovConstRegPatching* nativeMovConstRegPatching_at(address address) { | |
605 NativeMovConstRegPatching* test = (NativeMovConstRegPatching*)address; | |
606 #ifdef ASSERT | |
607 test->verify(); | |
608 #endif | |
609 return test; | |
610 } | |
611 | |
612 | |
613 friend NativeMovConstRegPatching* nativeMovConstRegPatching_before(address address) { | |
614 NativeMovConstRegPatching* test = (NativeMovConstRegPatching*)(address - instruction_size); | |
615 #ifdef ASSERT | |
616 test->verify(); | |
617 #endif | |
618 return test; | |
619 } | |
620 | |
621 }; | |
622 | |
623 | |
624 // An interface for accessing/manipulating native memory ops | |
625 // ld* [reg + offset], reg | |
626 // st* reg, [reg + offset] | |
627 // sethi %hi(imm), reg; add reg, %lo(imm), reg; ld* [reg1 + reg], reg2 | |
628 // sethi %hi(imm), reg; add reg, %lo(imm), reg; st* reg2, [reg1 + reg] | |
629 // Ops covered: {lds,ldu,st}{w,b,h}, {ld,st}{d,x} | |
630 // | |
631 class NativeMovRegMem; | |
632 inline NativeMovRegMem* nativeMovRegMem_at (address address); | |
633 class NativeMovRegMem: public NativeInstruction { | |
634 public: | |
635 enum Sparc_specific_constants { | |
636 op3_mask_ld = 1 << Assembler::lduw_op3 | | |
637 1 << Assembler::ldub_op3 | | |
638 1 << Assembler::lduh_op3 | | |
639 1 << Assembler::ldd_op3 | | |
640 1 << Assembler::ldsw_op3 | | |
641 1 << Assembler::ldsb_op3 | | |
642 1 << Assembler::ldsh_op3 | | |
643 1 << Assembler::ldx_op3, | |
644 op3_mask_st = 1 << Assembler::stw_op3 | | |
645 1 << Assembler::stb_op3 | | |
646 1 << Assembler::sth_op3 | | |
647 1 << Assembler::std_op3 | | |
648 1 << Assembler::stx_op3, | |
649 op3_ldst_int_limit = Assembler::ldf_op3, | |
650 op3_mask_ldf = 1 << (Assembler::ldf_op3 - op3_ldst_int_limit) | | |
651 1 << (Assembler::lddf_op3 - op3_ldst_int_limit), | |
652 op3_mask_stf = 1 << (Assembler::stf_op3 - op3_ldst_int_limit) | | |
653 1 << (Assembler::stdf_op3 - op3_ldst_int_limit), | |
654 | |
655 offset_width = 13, | |
656 sethi_offset = 0, | |
657 #ifdef _LP64 | |
658 add_offset = 7 * BytesPerInstWord, | |
659 #else | |
660 add_offset = 4, | |
661 #endif | |
662 ldst_offset = add_offset + BytesPerInstWord | |
663 }; | |
664 bool is_immediate() const { | |
665 // check if instruction is ld* [reg + offset], reg or st* reg, [reg + offset] | |
666 int i0 = long_at(0); | |
667 return (is_op(i0, Assembler::ldst_op)); | |
668 } | |
669 | |
670 address instruction_address() const { return addr_at(0); } | |
671 address next_instruction_address() const { | |
672 #ifdef _LP64 | |
673 return addr_at(is_immediate() ? 4 : (7 * BytesPerInstWord)); | |
674 #else | |
675 return addr_at(is_immediate() ? 4 : 12); | |
676 #endif | |
677 } | |
678 intptr_t offset() const { | |
679 return is_immediate()? inv_simm(long_at(0), offset_width) : | |
680 nativeMovConstReg_at(addr_at(0))->data(); | |
681 } | |
682 void set_offset(intptr_t x) { | |
683 if (is_immediate()) { | |
684 guarantee(fits_in_simm(x, offset_width), "data block offset overflow"); | |
685 set_long_at(0, set_simm(long_at(0), x, offset_width)); | |
686 } else | |
687 nativeMovConstReg_at(addr_at(0))->set_data(x); | |
688 } | |
689 | |
690 void add_offset_in_bytes(intptr_t radd_offset) { | |
691 set_offset (offset() + radd_offset); | |
692 } | |
693 | |
694 void copy_instruction_to(address new_instruction_address); | |
695 | |
696 void verify(); | |
697 void print (); | |
698 | |
699 // unit test stuff | |
700 static void test(); | |
701 | |
702 private: | |
703 friend inline NativeMovRegMem* nativeMovRegMem_at (address address) { | |
704 NativeMovRegMem* test = (NativeMovRegMem*)address; | |
705 #ifdef ASSERT | |
706 test->verify(); | |
707 #endif | |
708 return test; | |
709 } | |
710 }; | |
711 | |
712 | |
713 // An interface for accessing/manipulating native memory ops | |
714 // ld* [reg + offset], reg | |
715 // st* reg, [reg + offset] | |
716 // sethi %hi(imm), reg; nop; add reg, %lo(imm), reg; ld* [reg1 + reg], reg2 | |
717 // sethi %hi(imm), reg; nop; add reg, %lo(imm), reg; st* reg2, [reg1 + reg] | |
718 // Ops covered: {lds,ldu,st}{w,b,h}, {ld,st}{d,x} | |
719 // | |
720 // Note that it is identical to NativeMovRegMem with the exception of a nop between the | |
721 // sethi and the add. The nop is required to be in the delay slot of the call instruction | |
722 // which overwrites the sethi during patching. | |
723 class NativeMovRegMemPatching; | |
724 inline NativeMovRegMemPatching* nativeMovRegMemPatching_at (address address); | |
725 class NativeMovRegMemPatching: public NativeInstruction { | |
726 public: | |
727 enum Sparc_specific_constants { | |
728 op3_mask_ld = 1 << Assembler::lduw_op3 | | |
729 1 << Assembler::ldub_op3 | | |
730 1 << Assembler::lduh_op3 | | |
731 1 << Assembler::ldd_op3 | | |
732 1 << Assembler::ldsw_op3 | | |
733 1 << Assembler::ldsb_op3 | | |
734 1 << Assembler::ldsh_op3 | | |
735 1 << Assembler::ldx_op3, | |
736 op3_mask_st = 1 << Assembler::stw_op3 | | |
737 1 << Assembler::stb_op3 | | |
738 1 << Assembler::sth_op3 | | |
739 1 << Assembler::std_op3 | | |
740 1 << Assembler::stx_op3, | |
741 op3_ldst_int_limit = Assembler::ldf_op3, | |
742 op3_mask_ldf = 1 << (Assembler::ldf_op3 - op3_ldst_int_limit) | | |
743 1 << (Assembler::lddf_op3 - op3_ldst_int_limit), | |
744 op3_mask_stf = 1 << (Assembler::stf_op3 - op3_ldst_int_limit) | | |
745 1 << (Assembler::stdf_op3 - op3_ldst_int_limit), | |
746 | |
747 offset_width = 13, | |
748 sethi_offset = 0, | |
749 #ifdef _LP64 | |
750 nop_offset = 7 * BytesPerInstWord, | |
751 #else | |
752 nop_offset = 4, | |
753 #endif | |
754 add_offset = nop_offset + BytesPerInstWord, | |
755 ldst_offset = add_offset + BytesPerInstWord | |
756 }; | |
757 bool is_immediate() const { | |
758 // check if instruction is ld* [reg + offset], reg or st* reg, [reg + offset] | |
759 int i0 = long_at(0); | |
760 return (is_op(i0, Assembler::ldst_op)); | |
761 } | |
762 | |
763 address instruction_address() const { return addr_at(0); } | |
764 address next_instruction_address() const { | |
765 return addr_at(is_immediate()? 4 : 16); | |
766 } | |
767 int offset() const { | |
768 return is_immediate()? inv_simm(long_at(0), offset_width) : | |
769 nativeMovConstRegPatching_at(addr_at(0))->data(); | |
770 } | |
771 void set_offset(int x) { | |
772 if (is_immediate()) { | |
773 guarantee(fits_in_simm(x, offset_width), "data block offset overflow"); | |
774 set_long_at(0, set_simm(long_at(0), x, offset_width)); | |
775 } | |
776 else | |
777 nativeMovConstRegPatching_at(addr_at(0))->set_data(x); | |
778 } | |
779 | |
780 void add_offset_in_bytes(intptr_t radd_offset) { | |
781 set_offset (offset() + radd_offset); | |
782 } | |
783 | |
784 void copy_instruction_to(address new_instruction_address); | |
785 | |
786 void verify(); | |
787 void print (); | |
788 | |
789 // unit test stuff | |
790 static void test(); | |
791 | |
792 private: | |
793 friend inline NativeMovRegMemPatching* nativeMovRegMemPatching_at (address address) { | |
794 NativeMovRegMemPatching* test = (NativeMovRegMemPatching*)address; | |
795 #ifdef ASSERT | |
796 test->verify(); | |
797 #endif | |
798 return test; | |
799 } | |
800 }; | |
801 | |
802 | |
803 // An interface for accessing/manipulating native jumps | |
804 // jump_to addr | |
805 // == sethi %hi22(addr), temp ; jumpl reg, %lo10(addr), G0 ; <delay> | |
806 // jumpl_to addr, lreg | |
807 // == sethi %hi22(addr), temp ; jumpl reg, %lo10(addr), lreg ; <delay> | |
808 class NativeJump; | |
809 inline NativeJump* nativeJump_at(address address); | |
810 class NativeJump: public NativeInstruction { | |
811 private: | |
812 void guarantee_displacement(int disp, int width) { | |
813 guarantee(fits_in_simm(disp, width + 2), "branch displacement overflow"); | |
814 } | |
815 | |
816 public: | |
817 enum Sparc_specific_constants { | |
818 sethi_offset = 0, | |
819 #ifdef _LP64 | |
820 jmpl_offset = 7 * BytesPerInstWord, | |
821 instruction_size = 9 * BytesPerInstWord // includes delay slot | |
822 #else | |
823 jmpl_offset = 1 * BytesPerInstWord, | |
824 instruction_size = 3 * BytesPerInstWord // includes delay slot | |
825 #endif | |
826 }; | |
827 | |
828 address instruction_address() const { return addr_at(0); } | |
829 address next_instruction_address() const { return addr_at(instruction_size); } | |
830 | |
831 #ifdef _LP64 | |
832 address jump_destination() const { | |
833 return (address) data64(instruction_address(), long_at(jmpl_offset)); | |
834 } | |
835 void set_jump_destination(address dest) { | |
836 set_data64_sethi( instruction_address(), (intptr_t)dest); | |
837 set_long_at(jmpl_offset, set_data32_simm13( long_at(jmpl_offset), (intptr_t)dest)); | |
838 } | |
839 #else | |
840 address jump_destination() const { | |
841 return (address) data32(long_at(sethi_offset), long_at(jmpl_offset)); | |
842 } | |
843 void set_jump_destination(address dest) { | |
844 set_long_at(sethi_offset, set_data32_sethi( long_at(sethi_offset), (intptr_t)dest)); | |
845 set_long_at(jmpl_offset, set_data32_simm13( long_at(jmpl_offset), (intptr_t)dest)); | |
846 } | |
847 #endif | |
848 | |
849 // Creation | |
850 friend inline NativeJump* nativeJump_at(address address) { | |
851 NativeJump* jump = (NativeJump*)address; | |
852 #ifdef ASSERT | |
853 jump->verify(); | |
854 #endif | |
855 return jump; | |
856 } | |
857 | |
858 void verify(); | |
859 void print(); | |
860 | |
861 // Unit testing stuff | |
862 static void test(); | |
863 | |
864 // Insertion of native jump instruction | |
865 static void insert(address code_pos, address entry); | |
866 // MT-safe insertion of native jump at verified method entry | |
867 static void check_verified_entry_alignment(address entry, address verified_entry) { | |
868 // nothing to do for sparc. | |
869 } | |
870 static void patch_verified_entry(address entry, address verified_entry, address dest); | |
871 }; | |
872 | |
873 | |
874 | |
875 // Despite the name, handles only simple branches. | |
876 class NativeGeneralJump; | |
877 inline NativeGeneralJump* nativeGeneralJump_at(address address); | |
878 class NativeGeneralJump: public NativeInstruction { | |
879 public: | |
880 enum Sparc_specific_constants { | |
881 instruction_size = 8 | |
882 }; | |
883 | |
884 address instruction_address() const { return addr_at(0); } | |
885 address jump_destination() const { return addr_at(0) + branch_destination_offset(long_at(0)); } | |
886 void set_jump_destination(address dest) { | |
887 int patched_instr = patch_branch_destination_offset(dest - addr_at(0), long_at(0)); | |
888 set_long_at(0, patched_instr); | |
889 } | |
890 NativeInstruction *delay_slot_instr() { return nativeInstruction_at(addr_at(4));} | |
891 void fill_delay_slot(int instr) { set_long_at(4, instr);} | |
892 Assembler::Condition condition() { | |
893 int x = long_at(0); | |
894 return (Assembler::Condition) Assembler::inv_cond(x); | |
895 } | |
896 | |
897 // Creation | |
898 friend inline NativeGeneralJump* nativeGeneralJump_at(address address) { | |
899 NativeGeneralJump* jump = (NativeGeneralJump*)(address); | |
900 #ifdef ASSERT | |
901 jump->verify(); | |
902 #endif | |
903 return jump; | |
904 } | |
905 | |
906 // Insertion of native general jump instruction | |
907 static void insert_unconditional(address code_pos, address entry); | |
908 static void replace_mt_safe(address instr_addr, address code_buffer); | |
909 | |
910 void verify(); | |
911 }; | |
912 | |
913 | |
914 class NativeIllegalInstruction: public NativeInstruction { | |
915 public: | |
916 enum Sparc_specific_constants { | |
917 instruction_size = 4 | |
918 }; | |
919 | |
920 // Insert illegal opcode as specific address | |
921 static void insert(address code_pos); | |
922 }; | |
1972 | 923 |
924 #endif // CPU_SPARC_VM_NATIVEINST_SPARC_HPP |