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Side by Side Diff: src/x64/macro-assembler-x64.h

Issue 23461039: add context save for GenerateFastApiCall (Closed) Base URL: https://v8.googlecode.com/svn/branches/bleeding_edge
Patch Set: Created 7 years, 3 months ago
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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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1253 void PrepareCallApiFunction(int arg_stack_space); 1253 void PrepareCallApiFunction(int arg_stack_space);
1254 1254
1255 // Calls an API function. Allocates HandleScope, extracts returned value 1255 // Calls an API function. Allocates HandleScope, extracts returned value
1256 // from handle and propagates exceptions. Clobbers r14, r15, rbx and 1256 // from handle and propagates exceptions. Clobbers r14, r15, rbx and
1257 // caller-save registers. Restores context. On return removes 1257 // caller-save registers. Restores context. On return removes
1258 // stack_space * kPointerSize (GCed). 1258 // stack_space * kPointerSize (GCed).
1259 void CallApiFunctionAndReturn(Address function_address, 1259 void CallApiFunctionAndReturn(Address function_address,
1260 Address thunk_address, 1260 Address thunk_address,
1261 Register thunk_last_arg, 1261 Register thunk_last_arg,
1262 int stack_space, 1262 int stack_space,
1263 int return_value_offset_from_rbp); 1263 int return_value_offset_from_rbp,
1264 int restore_context_offset_from_rbp = 0);
1264 1265
1265 // Before calling a C-function from generated code, align arguments on stack. 1266 // Before calling a C-function from generated code, align arguments on stack.
1266 // After aligning the frame, arguments must be stored in rsp[0], rsp[8], 1267 // After aligning the frame, arguments must be stored in rsp[0], rsp[8],
1267 // etc., not pushed. The argument count assumes all arguments are word sized. 1268 // etc., not pushed. The argument count assumes all arguments are word sized.
1268 // The number of slots reserved for arguments depends on platform. On Windows 1269 // The number of slots reserved for arguments depends on platform. On Windows
1269 // stack slots are reserved for the arguments passed in registers. On other 1270 // stack slots are reserved for the arguments passed in registers. On other
1270 // platforms stack slots are only reserved for the arguments actually passed 1271 // platforms stack slots are only reserved for the arguments actually passed
1271 // on the stack. 1272 // on the stack.
1272 void PrepareCallCFunction(int num_arguments); 1273 void PrepareCallCFunction(int num_arguments);
1273 1274
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1409 Label::Distance near_jump = Label::kFar, 1410 Label::Distance near_jump = Label::kFar,
1410 const CallWrapper& call_wrapper = NullCallWrapper(), 1411 const CallWrapper& call_wrapper = NullCallWrapper(),
1411 CallKind call_kind = CALL_AS_METHOD); 1412 CallKind call_kind = CALL_AS_METHOD);
1412 1413
1413 void EnterExitFramePrologue(bool save_rax); 1414 void EnterExitFramePrologue(bool save_rax);
1414 1415
1415 // Allocates arg_stack_space * kPointerSize memory (not GCed) on the stack 1416 // Allocates arg_stack_space * kPointerSize memory (not GCed) on the stack
1416 // accessible via StackSpaceOperand. 1417 // accessible via StackSpaceOperand.
1417 void EnterExitFrameEpilogue(int arg_stack_space, bool save_doubles); 1418 void EnterExitFrameEpilogue(int arg_stack_space, bool save_doubles);
1418 1419
1419 void LeaveExitFrameEpilogue(); 1420 void LeaveExitFrameEpilogue(bool restore_context);
1420 1421
1421 // Allocation support helpers. 1422 // Allocation support helpers.
1422 // Loads the top of new-space into the result register. 1423 // Loads the top of new-space into the result register.
1423 // Otherwise the address of the new-space top is loaded into scratch (if 1424 // Otherwise the address of the new-space top is loaded into scratch (if
1424 // scratch is valid), and the new-space top is loaded into result. 1425 // scratch is valid), and the new-space top is loaded into result.
1425 void LoadAllocationTopHelper(Register result, 1426 void LoadAllocationTopHelper(Register result,
1426 Register scratch, 1427 Register scratch,
1427 AllocationFlags flags); 1428 AllocationFlags flags);
1428 1429
1429 // Update allocation top with value in result_end register. 1430 // Update allocation top with value in result_end register.
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1550 masm->popfq(); \ 1551 masm->popfq(); \
1551 } \ 1552 } \
1552 masm-> 1553 masm->
1553 #else 1554 #else
1554 #define ACCESS_MASM(masm) masm-> 1555 #define ACCESS_MASM(masm) masm->
1555 #endif 1556 #endif
1556 1557
1557 } } // namespace v8::internal 1558 } } // namespace v8::internal
1558 1559
1559 #endif // V8_X64_MACRO_ASSEMBLER_X64_H_ 1560 #endif // V8_X64_MACRO_ASSEMBLER_X64_H_
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