Mercurial > hg > truffle
annotate src/cpu/zero/vm/stubGenerator_zero.cpp @ 1865:1c352af0135d
6763959: java.util.concurrent.locks.LockSupport.parkUntil(0) blocks forever
Summary: Absolute time 0 needs to return immediately.
Reviewed-by: phh, dcubed, dholmes
author | acorn |
---|---|
date | Mon, 04 Oct 2010 13:11:10 -0400 |
parents | c18cbe5936b8 |
children | f95d63e2154a |
rev | line source |
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1010 | 1 /* |
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6941466: Oracle rebranding changes for Hotspot repositories
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2 * Copyright (c) 2003, 2007, 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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6941466: Oracle rebranding changes for Hotspot repositories
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20 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
c18cbe5936b8
6941466: Oracle rebranding changes for Hotspot repositories
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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 | |
26 #include "incls/_precompiled.incl" | |
27 #include "incls/_stubGenerator_zero.cpp.incl" | |
28 | |
29 // Declaration and definition of StubGenerator (no .hpp file). | |
30 // For a more detailed description of the stub routine structure | |
31 // see the comment in stubRoutines.hpp | |
32 | |
33 class StubGenerator: public StubCodeGenerator { | |
34 private: | |
35 // The call stub is used to call Java from C | |
36 static void call_stub( | |
37 JavaCallWrapper *call_wrapper, | |
38 intptr_t* result, | |
39 BasicType result_type, | |
40 methodOop method, | |
41 address entry_point, | |
42 intptr_t* parameters, | |
43 int parameter_words, | |
44 TRAPS) { | |
45 JavaThread *thread = (JavaThread *) THREAD; | |
46 ZeroStack *stack = thread->zero_stack(); | |
47 | |
48 // Make sure we have no pending exceptions | |
49 assert(!HAS_PENDING_EXCEPTION, "call_stub called with pending exception"); | |
50 | |
51 // Set up the stack if necessary | |
52 bool stack_needs_teardown = false; | |
53 if (stack->needs_setup()) { | |
1511 | 54 size_t zero_stack_size = stack->suggest_size(thread); |
1010 | 55 stack->setup(alloca(zero_stack_size), zero_stack_size); |
56 stack_needs_teardown = true; | |
57 } | |
58 | |
59 // Allocate and initialize our frame | |
1379 | 60 EntryFrame *frame = |
61 EntryFrame::build(parameters, parameter_words, call_wrapper, THREAD); | |
1010 | 62 |
63 if (!HAS_PENDING_EXCEPTION) { | |
1379 | 64 // Push the frame |
65 thread->push_zero_frame(frame); | |
66 | |
67 // Make the call | |
68 Interpreter::invoke_method(method, entry_point, THREAD); | |
69 | |
70 // Store the result | |
71 if (!HAS_PENDING_EXCEPTION) { | |
72 switch (result_type) { | |
73 case T_INT: | |
74 *(jint *) result = *(jint *) stack->sp(); | |
75 break; | |
76 case T_LONG: | |
77 *(jlong *) result = *(jlong *) stack->sp(); | |
78 break; | |
79 case T_FLOAT: | |
80 *(jfloat *) result = *(jfloat *) stack->sp(); | |
81 break; | |
82 case T_DOUBLE: | |
83 *(jdouble *) result = *(jdouble *) stack->sp(); | |
84 break; | |
85 case T_OBJECT: | |
86 *(oop *) result = *(oop *) stack->sp(); | |
87 break; | |
88 default: | |
89 ShouldNotReachHere(); | |
90 } | |
1010 | 91 } |
1379 | 92 |
93 // Unwind the frame | |
94 thread->pop_zero_frame(); | |
1010 | 95 } |
96 | |
97 // Tear down the stack if necessary | |
98 if (stack_needs_teardown) | |
99 stack->teardown(); | |
100 } | |
101 | |
102 // These stubs get called from some dumb test routine. | |
103 // I'll write them properly when they're called from | |
104 // something that's actually doing something. | |
105 static void fake_arraycopy_stub(address src, address dst, int count) { | |
106 assert(count == 0, "huh?"); | |
107 } | |
108 | |
109 void generate_arraycopy_stubs() { | |
110 // Call the conjoint generation methods immediately after | |
111 // the disjoint ones so that short branches from the former | |
112 // to the latter can be generated. | |
113 StubRoutines::_jbyte_disjoint_arraycopy = (address) fake_arraycopy_stub; | |
114 StubRoutines::_jbyte_arraycopy = (address) fake_arraycopy_stub; | |
115 | |
116 StubRoutines::_jshort_disjoint_arraycopy = (address) fake_arraycopy_stub; | |
117 StubRoutines::_jshort_arraycopy = (address) fake_arraycopy_stub; | |
118 | |
119 StubRoutines::_jint_disjoint_arraycopy = (address) fake_arraycopy_stub; | |
120 StubRoutines::_jint_arraycopy = (address) fake_arraycopy_stub; | |
121 | |
122 StubRoutines::_jlong_disjoint_arraycopy = (address) fake_arraycopy_stub; | |
123 StubRoutines::_jlong_arraycopy = (address) fake_arraycopy_stub; | |
124 | |
125 StubRoutines::_oop_disjoint_arraycopy = ShouldNotCallThisStub(); | |
126 StubRoutines::_oop_arraycopy = ShouldNotCallThisStub(); | |
127 | |
128 StubRoutines::_checkcast_arraycopy = ShouldNotCallThisStub(); | |
129 StubRoutines::_unsafe_arraycopy = ShouldNotCallThisStub(); | |
130 StubRoutines::_generic_arraycopy = ShouldNotCallThisStub(); | |
131 | |
132 // We don't generate specialized code for HeapWord-aligned source | |
133 // arrays, so just use the code we've already generated | |
134 StubRoutines::_arrayof_jbyte_disjoint_arraycopy = | |
135 StubRoutines::_jbyte_disjoint_arraycopy; | |
136 StubRoutines::_arrayof_jbyte_arraycopy = | |
137 StubRoutines::_jbyte_arraycopy; | |
138 | |
139 StubRoutines::_arrayof_jshort_disjoint_arraycopy = | |
140 StubRoutines::_jshort_disjoint_arraycopy; | |
141 StubRoutines::_arrayof_jshort_arraycopy = | |
142 StubRoutines::_jshort_arraycopy; | |
143 | |
144 StubRoutines::_arrayof_jint_disjoint_arraycopy = | |
145 StubRoutines::_jint_disjoint_arraycopy; | |
146 StubRoutines::_arrayof_jint_arraycopy = | |
147 StubRoutines::_jint_arraycopy; | |
148 | |
149 StubRoutines::_arrayof_jlong_disjoint_arraycopy = | |
150 StubRoutines::_jlong_disjoint_arraycopy; | |
151 StubRoutines::_arrayof_jlong_arraycopy = | |
152 StubRoutines::_jlong_arraycopy; | |
153 | |
154 StubRoutines::_arrayof_oop_disjoint_arraycopy = | |
155 StubRoutines::_oop_disjoint_arraycopy; | |
156 StubRoutines::_arrayof_oop_arraycopy = | |
157 StubRoutines::_oop_arraycopy; | |
158 } | |
159 | |
160 void generate_initial() { | |
161 // Generates all stubs and initializes the entry points | |
162 | |
163 // entry points that exist in all platforms Note: This is code | |
164 // that could be shared among different platforms - however the | |
165 // benefit seems to be smaller than the disadvantage of having a | |
166 // much more complicated generator structure. See also comment in | |
167 // stubRoutines.hpp. | |
168 | |
169 StubRoutines::_forward_exception_entry = ShouldNotCallThisStub(); | |
170 StubRoutines::_call_stub_entry = (address) call_stub; | |
171 StubRoutines::_catch_exception_entry = ShouldNotCallThisStub(); | |
172 | |
173 // atomic calls | |
174 StubRoutines::_atomic_xchg_entry = ShouldNotCallThisStub(); | |
175 StubRoutines::_atomic_xchg_ptr_entry = ShouldNotCallThisStub(); | |
176 StubRoutines::_atomic_cmpxchg_entry = ShouldNotCallThisStub(); | |
177 StubRoutines::_atomic_cmpxchg_ptr_entry = ShouldNotCallThisStub(); | |
178 StubRoutines::_atomic_cmpxchg_long_entry = ShouldNotCallThisStub(); | |
179 StubRoutines::_atomic_add_entry = ShouldNotCallThisStub(); | |
180 StubRoutines::_atomic_add_ptr_entry = ShouldNotCallThisStub(); | |
181 StubRoutines::_fence_entry = ShouldNotCallThisStub(); | |
182 | |
183 // amd64 does this here, sparc does it in generate_all() | |
184 StubRoutines::_handler_for_unsafe_access_entry = | |
185 ShouldNotCallThisStub(); | |
186 } | |
187 | |
188 void generate_all() { | |
189 // Generates all stubs and initializes the entry points | |
190 | |
191 // These entry points require SharedInfo::stack0 to be set up in | |
192 // non-core builds and need to be relocatable, so they each | |
193 // fabricate a RuntimeStub internally. | |
194 StubRoutines::_throw_AbstractMethodError_entry = | |
195 ShouldNotCallThisStub(); | |
196 | |
197 StubRoutines::_throw_ArithmeticException_entry = | |
198 ShouldNotCallThisStub(); | |
199 | |
200 StubRoutines::_throw_NullPointerException_entry = | |
201 ShouldNotCallThisStub(); | |
202 | |
203 StubRoutines::_throw_NullPointerException_at_call_entry = | |
204 ShouldNotCallThisStub(); | |
205 | |
206 StubRoutines::_throw_StackOverflowError_entry = | |
207 ShouldNotCallThisStub(); | |
208 | |
209 // support for verify_oop (must happen after universe_init) | |
210 StubRoutines::_verify_oop_subroutine_entry = | |
211 ShouldNotCallThisStub(); | |
212 | |
213 // arraycopy stubs used by compilers | |
214 generate_arraycopy_stubs(); | |
215 } | |
216 | |
217 public: | |
218 StubGenerator(CodeBuffer* code, bool all) : StubCodeGenerator(code) { | |
219 if (all) { | |
220 generate_all(); | |
221 } else { | |
222 generate_initial(); | |
223 } | |
224 } | |
225 }; | |
226 | |
227 void StubGenerator_generate(CodeBuffer* code, bool all) { | |
228 StubGenerator g(code, all); | |
229 } | |
230 | |
1379 | 231 EntryFrame *EntryFrame::build(const intptr_t* parameters, |
1010 | 232 int parameter_words, |
1379 | 233 JavaCallWrapper* call_wrapper, |
234 TRAPS) { | |
235 | |
236 ZeroStack *stack = ((JavaThread *) THREAD)->zero_stack(); | |
237 stack->overflow_check(header_words + parameter_words, CHECK_NULL); | |
1010 | 238 |
239 stack->push(0); // next_frame, filled in later | |
240 intptr_t *fp = stack->sp(); | |
241 assert(fp - stack->sp() == next_frame_off, "should be"); | |
242 | |
243 stack->push(ENTRY_FRAME); | |
244 assert(fp - stack->sp() == frame_type_off, "should be"); | |
245 | |
246 stack->push((intptr_t) call_wrapper); | |
247 assert(fp - stack->sp() == call_wrapper_off, "should be"); | |
248 | |
249 for (int i = 0; i < parameter_words; i++) | |
250 stack->push(parameters[i]); | |
251 | |
252 return (EntryFrame *) fp; | |
253 } |