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1 // Copyright 2012 the V8 project authors. All rights reserved. | 1 // Copyright 2012 the V8 project authors. All rights reserved. |
2 // Redistribution and use in source and binary forms, with or without | 2 // Redistribution and use in source and binary forms, with or without |
3 // modification, are permitted provided that the following conditions are | 3 // modification, are permitted provided that the following conditions are |
4 // met: | 4 // met: |
5 // | 5 // |
6 // * Redistributions of source code must retain the above copyright | 6 // * Redistributions of source code must retain the above copyright |
7 // notice, this list of conditions and the following disclaimer. | 7 // notice, this list of conditions and the following disclaimer. |
8 // * Redistributions in binary form must reproduce the above | 8 // * Redistributions in binary form must reproduce the above |
9 // copyright notice, this list of conditions and the following | 9 // copyright notice, this list of conditions and the following |
10 // disclaimer in the documentation and/or other materials provided | 10 // disclaimer in the documentation and/or other materials provided |
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295 // memory (not GCed) on the stack accessible via StackSpaceOperand. | 295 // memory (not GCed) on the stack accessible via StackSpaceOperand. |
296 void EnterApiExitFrame(int arg_stack_space); | 296 void EnterApiExitFrame(int arg_stack_space); |
297 | 297 |
298 // Leave the current exit frame. Expects/provides the return value in | 298 // Leave the current exit frame. Expects/provides the return value in |
299 // register rax:rdx (untouched) and the pointer to the first | 299 // register rax:rdx (untouched) and the pointer to the first |
300 // argument in register rsi. | 300 // argument in register rsi. |
301 void LeaveExitFrame(bool save_doubles = false); | 301 void LeaveExitFrame(bool save_doubles = false); |
302 | 302 |
303 // Leave the current exit frame. Expects/provides the return value in | 303 // Leave the current exit frame. Expects/provides the return value in |
304 // register rax (untouched). | 304 // register rax (untouched). |
305 void LeaveApiExitFrame(); | 305 void LeaveApiExitFrame(bool restore_context); |
306 | 306 |
307 // Push and pop the registers that can hold pointers. | 307 // Push and pop the registers that can hold pointers. |
308 void PushSafepointRegisters() { Pushad(); } | 308 void PushSafepointRegisters() { Pushad(); } |
309 void PopSafepointRegisters() { Popad(); } | 309 void PopSafepointRegisters() { Popad(); } |
310 // Store the value in register src in the safepoint register stack | 310 // Store the value in register src in the safepoint register stack |
311 // slot for register dst. | 311 // slot for register dst. |
312 void StoreToSafepointRegisterSlot(Register dst, const Immediate& imm); | 312 void StoreToSafepointRegisterSlot(Register dst, const Immediate& imm); |
313 void StoreToSafepointRegisterSlot(Register dst, Register src); | 313 void StoreToSafepointRegisterSlot(Register dst, Register src); |
314 void LoadFromSafepointRegisterSlot(Register dst, Register src); | 314 void LoadFromSafepointRegisterSlot(Register dst, Register src); |
315 | 315 |
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1273 void PrepareCallApiFunction(int arg_stack_space); | 1273 void PrepareCallApiFunction(int arg_stack_space); |
1274 | 1274 |
1275 // Calls an API function. Allocates HandleScope, extracts returned value | 1275 // Calls an API function. Allocates HandleScope, extracts returned value |
1276 // from handle and propagates exceptions. Clobbers r14, r15, rbx and | 1276 // from handle and propagates exceptions. Clobbers r14, r15, rbx and |
1277 // caller-save registers. Restores context. On return removes | 1277 // caller-save registers. Restores context. On return removes |
1278 // stack_space * kPointerSize (GCed). | 1278 // stack_space * kPointerSize (GCed). |
1279 void CallApiFunctionAndReturn(Address function_address, | 1279 void CallApiFunctionAndReturn(Address function_address, |
1280 Address thunk_address, | 1280 Address thunk_address, |
1281 Register thunk_last_arg, | 1281 Register thunk_last_arg, |
1282 int stack_space, | 1282 int stack_space, |
1283 int return_value_offset_from_rbp); | 1283 Operand return_value_operand, |
| 1284 Operand* context_restore_operand); |
1284 | 1285 |
1285 // Before calling a C-function from generated code, align arguments on stack. | 1286 // Before calling a C-function from generated code, align arguments on stack. |
1286 // After aligning the frame, arguments must be stored in rsp[0], rsp[8], | 1287 // After aligning the frame, arguments must be stored in rsp[0], rsp[8], |
1287 // etc., not pushed. The argument count assumes all arguments are word sized. | 1288 // etc., not pushed. The argument count assumes all arguments are word sized. |
1288 // The number of slots reserved for arguments depends on platform. On Windows | 1289 // The number of slots reserved for arguments depends on platform. On Windows |
1289 // stack slots are reserved for the arguments passed in registers. On other | 1290 // stack slots are reserved for the arguments passed in registers. On other |
1290 // platforms stack slots are only reserved for the arguments actually passed | 1291 // platforms stack slots are only reserved for the arguments actually passed |
1291 // on the stack. | 1292 // on the stack. |
1292 void PrepareCallCFunction(int num_arguments); | 1293 void PrepareCallCFunction(int num_arguments); |
1293 | 1294 |
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1429 Label::Distance near_jump = Label::kFar, | 1430 Label::Distance near_jump = Label::kFar, |
1430 const CallWrapper& call_wrapper = NullCallWrapper(), | 1431 const CallWrapper& call_wrapper = NullCallWrapper(), |
1431 CallKind call_kind = CALL_AS_METHOD); | 1432 CallKind call_kind = CALL_AS_METHOD); |
1432 | 1433 |
1433 void EnterExitFramePrologue(bool save_rax); | 1434 void EnterExitFramePrologue(bool save_rax); |
1434 | 1435 |
1435 // Allocates arg_stack_space * kPointerSize memory (not GCed) on the stack | 1436 // Allocates arg_stack_space * kPointerSize memory (not GCed) on the stack |
1436 // accessible via StackSpaceOperand. | 1437 // accessible via StackSpaceOperand. |
1437 void EnterExitFrameEpilogue(int arg_stack_space, bool save_doubles); | 1438 void EnterExitFrameEpilogue(int arg_stack_space, bool save_doubles); |
1438 | 1439 |
1439 void LeaveExitFrameEpilogue(); | 1440 void LeaveExitFrameEpilogue(bool restore_context); |
1440 | 1441 |
1441 // Allocation support helpers. | 1442 // Allocation support helpers. |
1442 // Loads the top of new-space into the result register. | 1443 // Loads the top of new-space into the result register. |
1443 // Otherwise the address of the new-space top is loaded into scratch (if | 1444 // Otherwise the address of the new-space top is loaded into scratch (if |
1444 // scratch is valid), and the new-space top is loaded into result. | 1445 // scratch is valid), and the new-space top is loaded into result. |
1445 void LoadAllocationTopHelper(Register result, | 1446 void LoadAllocationTopHelper(Register result, |
1446 Register scratch, | 1447 Register scratch, |
1447 AllocationFlags flags); | 1448 AllocationFlags flags); |
1448 | 1449 |
1449 // Update allocation top with value in result_end register. | 1450 // Update allocation top with value in result_end register. |
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1570 masm->popfq(); \ | 1571 masm->popfq(); \ |
1571 } \ | 1572 } \ |
1572 masm-> | 1573 masm-> |
1573 #else | 1574 #else |
1574 #define ACCESS_MASM(masm) masm-> | 1575 #define ACCESS_MASM(masm) masm-> |
1575 #endif | 1576 #endif |
1576 | 1577 |
1577 } } // namespace v8::internal | 1578 } } // namespace v8::internal |
1578 | 1579 |
1579 #endif // V8_X64_MACRO_ASSEMBLER_X64_H_ | 1580 #endif // V8_X64_MACRO_ASSEMBLER_X64_H_ |
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