Mercurial > hg > truffle
annotate src/cpu/zero/vm/stubGenerator_zero.cpp @ 4997:0c9196f57172
use profiling information whenever possible
author | Christian Haeubl <christian.haeubl@oracle.com> |
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date | Wed, 29 Feb 2012 19:20:15 -0800 |
parents | f08d439fab8c |
children | da91efe96a93 |
rev | line source |
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1010 | 1 /* |
1972 | 2 * Copyright (c) 2003, 2010, Oracle and/or its affiliates. All rights reserved. |
1379 | 3 * Copyright 2007, 2008, 2010 Red Hat, Inc. |
1010 | 4 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
5 * | |
6 * This code is free software; you can redistribute it and/or modify it | |
7 * under the terms of the GNU General Public License version 2 only, as | |
8 * published by the Free Software Foundation. | |
9 * | |
10 * This code is distributed in the hope that it will be useful, but WITHOUT | |
11 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or | |
12 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License | |
13 * version 2 for more details (a copy is included in the LICENSE file that | |
14 * accompanied this code). | |
15 * | |
16 * You should have received a copy of the GNU General Public License version | |
17 * 2 along with this work; if not, write to the Free Software Foundation, | |
18 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. | |
19 * | |
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20 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
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21 * or visit www.oracle.com if you need additional information or have any |
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22 * questions. |
1010 | 23 * |
24 */ | |
25 | |
1972 | 26 #include "precompiled.hpp" |
27 #include "asm/assembler.hpp" | |
28 #include "assembler_zero.inline.hpp" | |
29 #include "interpreter/interpreter.hpp" | |
30 #include "nativeInst_zero.hpp" | |
31 #include "oops/instanceOop.hpp" | |
32 #include "oops/methodOop.hpp" | |
33 #include "oops/objArrayKlass.hpp" | |
34 #include "oops/oop.inline.hpp" | |
35 #include "prims/methodHandles.hpp" | |
36 #include "runtime/frame.inline.hpp" | |
37 #include "runtime/handles.inline.hpp" | |
38 #include "runtime/sharedRuntime.hpp" | |
39 #include "runtime/stubCodeGenerator.hpp" | |
40 #include "runtime/stubRoutines.hpp" | |
41 #include "stack_zero.inline.hpp" | |
42 #include "utilities/top.hpp" | |
43 #ifdef TARGET_OS_FAMILY_linux | |
44 # include "thread_linux.inline.hpp" | |
45 #endif | |
3960 | 46 #ifdef TARGET_OS_FAMILY_bsd |
47 # include "thread_bsd.inline.hpp" | |
48 #endif | |
1972 | 49 #ifdef COMPILER2 |
50 #include "opto/runtime.hpp" | |
51 #endif | |
1010 | 52 |
53 // Declaration and definition of StubGenerator (no .hpp file). | |
54 // For a more detailed description of the stub routine structure | |
55 // see the comment in stubRoutines.hpp | |
56 | |
57 class StubGenerator: public StubCodeGenerator { | |
58 private: | |
59 // The call stub is used to call Java from C | |
60 static void call_stub( | |
61 JavaCallWrapper *call_wrapper, | |
62 intptr_t* result, | |
63 BasicType result_type, | |
64 methodOop method, | |
65 address entry_point, | |
66 intptr_t* parameters, | |
67 int parameter_words, | |
68 TRAPS) { | |
69 JavaThread *thread = (JavaThread *) THREAD; | |
70 ZeroStack *stack = thread->zero_stack(); | |
71 | |
72 // Make sure we have no pending exceptions | |
73 assert(!HAS_PENDING_EXCEPTION, "call_stub called with pending exception"); | |
74 | |
75 // Set up the stack if necessary | |
76 bool stack_needs_teardown = false; | |
77 if (stack->needs_setup()) { | |
1511 | 78 size_t zero_stack_size = stack->suggest_size(thread); |
1010 | 79 stack->setup(alloca(zero_stack_size), zero_stack_size); |
80 stack_needs_teardown = true; | |
81 } | |
82 | |
83 // Allocate and initialize our frame | |
1379 | 84 EntryFrame *frame = |
85 EntryFrame::build(parameters, parameter_words, call_wrapper, THREAD); | |
1010 | 86 |
87 if (!HAS_PENDING_EXCEPTION) { | |
1379 | 88 // Push the frame |
89 thread->push_zero_frame(frame); | |
90 | |
91 // Make the call | |
92 Interpreter::invoke_method(method, entry_point, THREAD); | |
93 | |
94 // Store the result | |
95 if (!HAS_PENDING_EXCEPTION) { | |
96 switch (result_type) { | |
97 case T_INT: | |
98 *(jint *) result = *(jint *) stack->sp(); | |
99 break; | |
100 case T_LONG: | |
101 *(jlong *) result = *(jlong *) stack->sp(); | |
102 break; | |
103 case T_FLOAT: | |
104 *(jfloat *) result = *(jfloat *) stack->sp(); | |
105 break; | |
106 case T_DOUBLE: | |
107 *(jdouble *) result = *(jdouble *) stack->sp(); | |
108 break; | |
109 case T_OBJECT: | |
110 *(oop *) result = *(oop *) stack->sp(); | |
111 break; | |
112 default: | |
113 ShouldNotReachHere(); | |
114 } | |
1010 | 115 } |
1379 | 116 |
117 // Unwind the frame | |
118 thread->pop_zero_frame(); | |
1010 | 119 } |
120 | |
121 // Tear down the stack if necessary | |
122 if (stack_needs_teardown) | |
123 stack->teardown(); | |
124 } | |
125 | |
126 // These stubs get called from some dumb test routine. | |
127 // I'll write them properly when they're called from | |
128 // something that's actually doing something. | |
129 static void fake_arraycopy_stub(address src, address dst, int count) { | |
130 assert(count == 0, "huh?"); | |
131 } | |
132 | |
133 void generate_arraycopy_stubs() { | |
134 // Call the conjoint generation methods immediately after | |
135 // the disjoint ones so that short branches from the former | |
136 // to the latter can be generated. | |
137 StubRoutines::_jbyte_disjoint_arraycopy = (address) fake_arraycopy_stub; | |
138 StubRoutines::_jbyte_arraycopy = (address) fake_arraycopy_stub; | |
139 | |
140 StubRoutines::_jshort_disjoint_arraycopy = (address) fake_arraycopy_stub; | |
141 StubRoutines::_jshort_arraycopy = (address) fake_arraycopy_stub; | |
142 | |
143 StubRoutines::_jint_disjoint_arraycopy = (address) fake_arraycopy_stub; | |
144 StubRoutines::_jint_arraycopy = (address) fake_arraycopy_stub; | |
145 | |
146 StubRoutines::_jlong_disjoint_arraycopy = (address) fake_arraycopy_stub; | |
147 StubRoutines::_jlong_arraycopy = (address) fake_arraycopy_stub; | |
148 | |
149 StubRoutines::_oop_disjoint_arraycopy = ShouldNotCallThisStub(); | |
150 StubRoutines::_oop_arraycopy = ShouldNotCallThisStub(); | |
151 | |
152 StubRoutines::_checkcast_arraycopy = ShouldNotCallThisStub(); | |
153 StubRoutines::_unsafe_arraycopy = ShouldNotCallThisStub(); | |
154 StubRoutines::_generic_arraycopy = ShouldNotCallThisStub(); | |
155 | |
156 // We don't generate specialized code for HeapWord-aligned source | |
157 // arrays, so just use the code we've already generated | |
158 StubRoutines::_arrayof_jbyte_disjoint_arraycopy = | |
159 StubRoutines::_jbyte_disjoint_arraycopy; | |
160 StubRoutines::_arrayof_jbyte_arraycopy = | |
161 StubRoutines::_jbyte_arraycopy; | |
162 | |
163 StubRoutines::_arrayof_jshort_disjoint_arraycopy = | |
164 StubRoutines::_jshort_disjoint_arraycopy; | |
165 StubRoutines::_arrayof_jshort_arraycopy = | |
166 StubRoutines::_jshort_arraycopy; | |
167 | |
168 StubRoutines::_arrayof_jint_disjoint_arraycopy = | |
169 StubRoutines::_jint_disjoint_arraycopy; | |
170 StubRoutines::_arrayof_jint_arraycopy = | |
171 StubRoutines::_jint_arraycopy; | |
172 | |
173 StubRoutines::_arrayof_jlong_disjoint_arraycopy = | |
174 StubRoutines::_jlong_disjoint_arraycopy; | |
175 StubRoutines::_arrayof_jlong_arraycopy = | |
176 StubRoutines::_jlong_arraycopy; | |
177 | |
178 StubRoutines::_arrayof_oop_disjoint_arraycopy = | |
179 StubRoutines::_oop_disjoint_arraycopy; | |
180 StubRoutines::_arrayof_oop_arraycopy = | |
181 StubRoutines::_oop_arraycopy; | |
182 } | |
183 | |
184 void generate_initial() { | |
185 // Generates all stubs and initializes the entry points | |
186 | |
187 // entry points that exist in all platforms Note: This is code | |
188 // that could be shared among different platforms - however the | |
189 // benefit seems to be smaller than the disadvantage of having a | |
190 // much more complicated generator structure. See also comment in | |
191 // stubRoutines.hpp. | |
192 | |
193 StubRoutines::_forward_exception_entry = ShouldNotCallThisStub(); | |
194 StubRoutines::_call_stub_entry = (address) call_stub; | |
195 StubRoutines::_catch_exception_entry = ShouldNotCallThisStub(); | |
196 | |
197 // atomic calls | |
198 StubRoutines::_atomic_xchg_entry = ShouldNotCallThisStub(); | |
199 StubRoutines::_atomic_xchg_ptr_entry = ShouldNotCallThisStub(); | |
200 StubRoutines::_atomic_cmpxchg_entry = ShouldNotCallThisStub(); | |
201 StubRoutines::_atomic_cmpxchg_ptr_entry = ShouldNotCallThisStub(); | |
202 StubRoutines::_atomic_cmpxchg_long_entry = ShouldNotCallThisStub(); | |
203 StubRoutines::_atomic_add_entry = ShouldNotCallThisStub(); | |
204 StubRoutines::_atomic_add_ptr_entry = ShouldNotCallThisStub(); | |
205 StubRoutines::_fence_entry = ShouldNotCallThisStub(); | |
206 | |
207 // amd64 does this here, sparc does it in generate_all() | |
208 StubRoutines::_handler_for_unsafe_access_entry = | |
209 ShouldNotCallThisStub(); | |
210 } | |
211 | |
212 void generate_all() { | |
213 // Generates all stubs and initializes the entry points | |
214 | |
215 // These entry points require SharedInfo::stack0 to be set up in | |
216 // non-core builds and need to be relocatable, so they each | |
217 // fabricate a RuntimeStub internally. | |
218 StubRoutines::_throw_AbstractMethodError_entry = | |
219 ShouldNotCallThisStub(); | |
220 | |
221 StubRoutines::_throw_NullPointerException_at_call_entry = | |
222 ShouldNotCallThisStub(); | |
223 | |
224 StubRoutines::_throw_StackOverflowError_entry = | |
225 ShouldNotCallThisStub(); | |
226 | |
227 // support for verify_oop (must happen after universe_init) | |
228 StubRoutines::_verify_oop_subroutine_entry = | |
229 ShouldNotCallThisStub(); | |
230 | |
231 // arraycopy stubs used by compilers | |
232 generate_arraycopy_stubs(); | |
233 } | |
234 | |
235 public: | |
236 StubGenerator(CodeBuffer* code, bool all) : StubCodeGenerator(code) { | |
237 if (all) { | |
238 generate_all(); | |
239 } else { | |
240 generate_initial(); | |
241 } | |
242 } | |
243 }; | |
244 | |
245 void StubGenerator_generate(CodeBuffer* code, bool all) { | |
246 StubGenerator g(code, all); | |
247 } | |
248 | |
1379 | 249 EntryFrame *EntryFrame::build(const intptr_t* parameters, |
1010 | 250 int parameter_words, |
1379 | 251 JavaCallWrapper* call_wrapper, |
252 TRAPS) { | |
253 | |
254 ZeroStack *stack = ((JavaThread *) THREAD)->zero_stack(); | |
255 stack->overflow_check(header_words + parameter_words, CHECK_NULL); | |
1010 | 256 |
257 stack->push(0); // next_frame, filled in later | |
258 intptr_t *fp = stack->sp(); | |
259 assert(fp - stack->sp() == next_frame_off, "should be"); | |
260 | |
261 stack->push(ENTRY_FRAME); | |
262 assert(fp - stack->sp() == frame_type_off, "should be"); | |
263 | |
264 stack->push((intptr_t) call_wrapper); | |
265 assert(fp - stack->sp() == call_wrapper_off, "should be"); | |
266 | |
267 for (int i = 0; i < parameter_words; i++) | |
268 stack->push(parameters[i]); | |
269 | |
270 return (EntryFrame *) fp; | |
271 } |