1 | /* |
2 | * Copyright (C) 2008 Apple Inc. All rights reserved. |
3 | * |
4 | * Redistribution and use in source and binary forms, with or without |
5 | * modification, are permitted provided that the following conditions |
6 | * are met: |
7 | * 1. Redistributions of source code must retain the above copyright |
8 | * notice, this list of conditions and the following disclaimer. |
9 | * 2. Redistributions in binary form must reproduce the above copyright |
10 | * notice, this list of conditions and the following disclaimer in the |
11 | * documentation and/or other materials provided with the distribution. |
12 | * |
13 | * THIS SOFTWARE IS PROVIDED BY APPLE INC. ``AS IS'' AND ANY |
14 | * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE |
15 | * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR |
16 | * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE INC. OR |
17 | * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, |
18 | * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, |
19 | * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR |
20 | * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY |
21 | * OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
22 | * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE |
23 | * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
24 | */ |
25 | |
26 | #ifndef JITStubCall_h |
27 | #define JITStubCall_h |
28 | |
29 | #include "MacroAssemblerCodeRef.h" |
30 | |
31 | #if ENABLE(JIT) |
32 | |
33 | namespace JSC { |
34 | |
35 | class JITStubCall { |
36 | public: |
37 | JITStubCall(JIT* jit, JSObject* (JIT_STUB *stub)(STUB_ARGS_DECLARATION)) |
38 | : m_jit(jit) |
39 | , m_stub(stub) |
40 | , m_returnType(Cell) |
41 | , m_stackIndex(JITSTACKFRAME_ARGS_INDEX) |
42 | { |
43 | } |
44 | |
45 | JITStubCall(JIT* jit, JSPropertyNameIterator* (JIT_STUB *stub)(STUB_ARGS_DECLARATION)) |
46 | : m_jit(jit) |
47 | , m_stub(stub) |
48 | , m_returnType(Cell) |
49 | , m_stackIndex(JITSTACKFRAME_ARGS_INDEX) |
50 | { |
51 | } |
52 | |
53 | JITStubCall(JIT* jit, void* (JIT_STUB *stub)(STUB_ARGS_DECLARATION)) |
54 | : m_jit(jit) |
55 | , m_stub(stub) |
56 | , m_returnType(VoidPtr) |
57 | , m_stackIndex(JITSTACKFRAME_ARGS_INDEX) |
58 | { |
59 | } |
60 | |
61 | JITStubCall(JIT* jit, int (JIT_STUB *stub)(STUB_ARGS_DECLARATION)) |
62 | : m_jit(jit) |
63 | , m_stub(stub) |
64 | , m_returnType(Int) |
65 | , m_stackIndex(JITSTACKFRAME_ARGS_INDEX) |
66 | { |
67 | } |
68 | |
69 | JITStubCall(JIT* jit, bool (JIT_STUB *stub)(STUB_ARGS_DECLARATION)) |
70 | : m_jit(jit) |
71 | , m_stub(stub) |
72 | , m_returnType(Int) |
73 | , m_stackIndex(JITSTACKFRAME_ARGS_INDEX) |
74 | { |
75 | } |
76 | |
77 | JITStubCall(JIT* jit, void (JIT_STUB *stub)(STUB_ARGS_DECLARATION)) |
78 | : m_jit(jit) |
79 | , m_stub(stub) |
80 | , m_returnType(Void) |
81 | , m_stackIndex(JITSTACKFRAME_ARGS_INDEX) |
82 | { |
83 | } |
84 | |
85 | #if USE(JSVALUE32_64) |
86 | JITStubCall(JIT* jit, EncodedJSValue (JIT_STUB *stub)(STUB_ARGS_DECLARATION)) |
87 | : m_jit(jit) |
88 | , m_stub(stub) |
89 | , m_returnType(Value) |
90 | , m_stackIndex(JITSTACKFRAME_ARGS_INDEX) |
91 | { |
92 | } |
93 | #endif |
94 | |
95 | // Arguments are added first to last. |
96 | |
97 | void skipArgument() |
98 | { |
99 | m_stackIndex += stackIndexStep; |
100 | } |
101 | |
102 | void addArgument(JIT::Imm32 argument) |
103 | { |
104 | m_jit->poke(value: argument, index: m_stackIndex); |
105 | m_stackIndex += stackIndexStep; |
106 | } |
107 | |
108 | void addArgument(JIT::ImmPtr argument) |
109 | { |
110 | m_jit->poke(imm: argument, index: m_stackIndex); |
111 | m_stackIndex += stackIndexStep; |
112 | } |
113 | |
114 | void addArgument(JIT::RegisterID argument) |
115 | { |
116 | m_jit->poke(src: argument, index: m_stackIndex); |
117 | m_stackIndex += stackIndexStep; |
118 | } |
119 | |
120 | void addArgument(const JSValue& value) |
121 | { |
122 | m_jit->poke(value: JIT::Imm32(value.payload()), index: m_stackIndex); |
123 | m_jit->poke(value: JIT::Imm32(value.tag()), index: m_stackIndex + 1); |
124 | m_stackIndex += stackIndexStep; |
125 | } |
126 | |
127 | void addArgument(JIT::RegisterID tag, JIT::RegisterID payload) |
128 | { |
129 | m_jit->poke(src: payload, index: m_stackIndex); |
130 | m_jit->poke(src: tag, index: m_stackIndex + 1); |
131 | m_stackIndex += stackIndexStep; |
132 | } |
133 | |
134 | #if USE(JSVALUE32_64) |
135 | void addArgument(unsigned srcVirtualRegister) |
136 | { |
137 | if (m_jit->m_codeBlock->isConstantRegisterIndex(srcVirtualRegister)) { |
138 | addArgument(m_jit->getConstantOperand(srcVirtualRegister)); |
139 | return; |
140 | } |
141 | |
142 | m_jit->emitLoad(srcVirtualRegister, JIT::regT1, JIT::regT0); |
143 | addArgument(JIT::regT1, JIT::regT0); |
144 | } |
145 | |
146 | void getArgument(size_t argumentNumber, JIT::RegisterID tag, JIT::RegisterID payload) |
147 | { |
148 | size_t stackIndex = JITSTACKFRAME_ARGS_INDEX + (argumentNumber * stackIndexStep); |
149 | m_jit->peek(payload, stackIndex); |
150 | m_jit->peek(tag, stackIndex + 1); |
151 | } |
152 | #else |
153 | void addArgument(unsigned src, JIT::RegisterID scratchRegister) // src is a virtual register. |
154 | { |
155 | if (m_jit->m_codeBlock->isConstantRegisterIndex(index: src)) |
156 | addArgument(argument: JIT::ImmPtr(JSValue::encode(value: m_jit->m_codeBlock->getConstant(index: src)))); |
157 | else { |
158 | m_jit->loadPtr(address: JIT::Address(JIT::callFrameRegister, src * sizeof(Register)), dest: scratchRegister); |
159 | addArgument(argument: scratchRegister); |
160 | } |
161 | m_jit->killLastResultRegister(); |
162 | } |
163 | #endif |
164 | |
165 | JIT::Call call() |
166 | { |
167 | #if ENABLE(OPCODE_SAMPLING) |
168 | if (m_jit->m_bytecodeIndex != (unsigned)-1) |
169 | m_jit->sampleInstruction(m_jit->m_codeBlock->instructions().begin() + m_jit->m_bytecodeIndex, true); |
170 | #endif |
171 | |
172 | m_jit->restoreArgumentReference(); |
173 | JIT::Call call = m_jit->call(); |
174 | m_jit->m_calls.append(val: CallRecord(call, m_jit->m_bytecodeIndex, m_stub.value())); |
175 | |
176 | #if ENABLE(OPCODE_SAMPLING) |
177 | if (m_jit->m_bytecodeIndex != (unsigned)-1) |
178 | m_jit->sampleInstruction(m_jit->m_codeBlock->instructions().begin() + m_jit->m_bytecodeIndex, false); |
179 | #endif |
180 | |
181 | #if USE(JSVALUE32_64) |
182 | m_jit->unmap(); |
183 | #else |
184 | m_jit->killLastResultRegister(); |
185 | #endif |
186 | return call; |
187 | } |
188 | |
189 | #if USE(JSVALUE32_64) |
190 | JIT::Call call(unsigned dst) // dst is a virtual register. |
191 | { |
192 | ASSERT(m_returnType == Value || m_returnType == Cell); |
193 | JIT::Call call = this->call(); |
194 | if (m_returnType == Value) |
195 | m_jit->emitStore(dst, JIT::regT1, JIT::regT0); |
196 | else |
197 | m_jit->emitStoreCell(dst, JIT::returnValueRegister); |
198 | return call; |
199 | } |
200 | #else |
201 | JIT::Call call(unsigned dst) // dst is a virtual register. |
202 | { |
203 | ASSERT(m_returnType == VoidPtr || m_returnType == Cell); |
204 | JIT::Call call = this->call(); |
205 | m_jit->emitPutVirtualRegister(dst); |
206 | return call; |
207 | } |
208 | #endif |
209 | |
210 | JIT::Call call(JIT::RegisterID dst) // dst is a machine register. |
211 | { |
212 | #if USE(JSVALUE32_64) |
213 | ASSERT(m_returnType == Value || m_returnType == VoidPtr || m_returnType == Int || m_returnType == Cell); |
214 | #else |
215 | ASSERT(m_returnType == VoidPtr || m_returnType == Int || m_returnType == Cell); |
216 | #endif |
217 | JIT::Call call = this->call(); |
218 | if (dst != JIT::returnValueRegister) |
219 | m_jit->move(src: JIT::returnValueRegister, dest: dst); |
220 | return call; |
221 | } |
222 | |
223 | private: |
224 | static const size_t stackIndexStep = sizeof(EncodedJSValue) == 2 * sizeof(void*) ? 2 : 1; |
225 | |
226 | JIT* m_jit; |
227 | FunctionPtr m_stub; |
228 | enum { Void, VoidPtr, Int, Value, Cell } m_returnType; |
229 | size_t m_stackIndex; |
230 | }; |
231 | } |
232 | |
233 | #endif // ENABLE(JIT) |
234 | |
235 | #endif // JITStubCall_h |
236 | |