Mercurial > hg > truffle
annotate src/cpu/zero/vm/stubGenerator_zero.cpp @ 1673:6709c14587c2 jdk7-b105
Added tag jdk7-b104 for changeset b4acf10eb134
| author | cl |
|---|---|
| date | Fri, 06 Aug 2010 12:51:54 -0700 |
| parents | c18cbe5936b8 |
| children | f95d63e2154a |
| rev | line source |
|---|---|
| 1010 | 1 /* |
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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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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 | |
| 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 } |