OLD | NEW |
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 |
(...skipping 103 matching lines...) Expand 10 before | Expand all | Expand 10 after Loading... |
114 // make sure that these are correctly updated during GC. Non object values | 114 // make sure that these are correctly updated during GC. Non object values |
115 // are stored as as two smis causing it to be untouched by GC. | 115 // are stored as as two smis causing it to be untouched by GC. |
116 ASSERT((object_regs & ~kJSCallerSaved) == 0); | 116 ASSERT((object_regs & ~kJSCallerSaved) == 0); |
117 ASSERT((non_object_regs & ~kJSCallerSaved) == 0); | 117 ASSERT((non_object_regs & ~kJSCallerSaved) == 0); |
118 ASSERT((object_regs & non_object_regs) == 0); | 118 ASSERT((object_regs & non_object_regs) == 0); |
119 for (int i = 0; i < kNumJSCallerSaved; i++) { | 119 for (int i = 0; i < kNumJSCallerSaved; i++) { |
120 int r = JSCallerSavedCode(i); | 120 int r = JSCallerSavedCode(i); |
121 Register reg = { r }; | 121 Register reg = { r }; |
122 ASSERT(!reg.is(kScratchRegister)); | 122 ASSERT(!reg.is(kScratchRegister)); |
123 if ((object_regs & (1 << r)) != 0) { | 123 if ((object_regs & (1 << r)) != 0) { |
124 __ push(reg); | 124 __ Push(reg); |
125 } | 125 } |
126 if ((non_object_regs & (1 << r)) != 0) { | 126 if ((non_object_regs & (1 << r)) != 0) { |
127 __ PushInt64AsTwoSmis(reg); | 127 __ PushInt64AsTwoSmis(reg); |
128 } | 128 } |
129 } | 129 } |
130 | 130 |
131 #ifdef DEBUG | 131 #ifdef DEBUG |
132 __ RecordComment("// Calling from debug break to runtime - come in - over"); | 132 __ RecordComment("// Calling from debug break to runtime - come in - over"); |
133 #endif | 133 #endif |
134 __ Set(rax, 0); // No arguments (argc == 0). | 134 __ Set(rax, 0); // No arguments (argc == 0). |
135 __ Move(rbx, ExternalReference::debug_break(masm->isolate())); | 135 __ Move(rbx, ExternalReference::debug_break(masm->isolate())); |
136 | 136 |
137 CEntryStub ceb(1); | 137 CEntryStub ceb(1); |
138 __ CallStub(&ceb); | 138 __ CallStub(&ceb); |
139 | 139 |
140 // Restore the register values from the expression stack. | 140 // Restore the register values from the expression stack. |
141 for (int i = kNumJSCallerSaved - 1; i >= 0; i--) { | 141 for (int i = kNumJSCallerSaved - 1; i >= 0; i--) { |
142 int r = JSCallerSavedCode(i); | 142 int r = JSCallerSavedCode(i); |
143 Register reg = { r }; | 143 Register reg = { r }; |
144 if (FLAG_debug_code) { | 144 if (FLAG_debug_code) { |
145 __ Set(reg, kDebugZapValue); | 145 __ Set(reg, kDebugZapValue); |
146 } | 146 } |
147 if ((object_regs & (1 << r)) != 0) { | 147 if ((object_regs & (1 << r)) != 0) { |
148 __ pop(reg); | 148 __ Pop(reg); |
149 } | 149 } |
150 // Reconstruct the 64-bit value from two smis. | 150 // Reconstruct the 64-bit value from two smis. |
151 if ((non_object_regs & (1 << r)) != 0) { | 151 if ((non_object_regs & (1 << r)) != 0) { |
152 __ PopInt64AsTwoSmis(reg); | 152 __ PopInt64AsTwoSmis(reg); |
153 } | 153 } |
154 } | 154 } |
155 | 155 |
156 // Read current padding counter and skip corresponding number of words. | 156 // Read current padding counter and skip corresponding number of words. |
157 __ pop(kScratchRegister); | 157 __ Pop(kScratchRegister); |
158 __ SmiToInteger32(kScratchRegister, kScratchRegister); | 158 __ SmiToInteger32(kScratchRegister, kScratchRegister); |
159 __ lea(rsp, Operand(rsp, kScratchRegister, times_pointer_size, 0)); | 159 __ lea(rsp, Operand(rsp, kScratchRegister, times_pointer_size, 0)); |
160 | 160 |
161 // Get rid of the internal frame. | 161 // Get rid of the internal frame. |
162 } | 162 } |
163 | 163 |
164 // If this call did not replace a call but patched other code then there will | 164 // If this call did not replace a call but patched other code then there will |
165 // be an unwanted return address left on the stack. Here we get rid of that. | 165 // be an unwanted return address left on the stack. Here we get rid of that. |
166 if (convert_call_to_jmp) { | 166 if (convert_call_to_jmp) { |
167 __ addq(rsp, Immediate(kPCOnStackSize)); | 167 __ addq(rsp, Immediate(kPCOnStackSize)); |
(...skipping 154 matching lines...) Expand 10 before | Expand all | Expand 10 after Loading... |
322 void Debug::GenerateFrameDropperLiveEdit(MacroAssembler* masm) { | 322 void Debug::GenerateFrameDropperLiveEdit(MacroAssembler* masm) { |
323 ExternalReference restarter_frame_function_slot = | 323 ExternalReference restarter_frame_function_slot = |
324 ExternalReference(Debug_Address::RestarterFrameFunctionPointer(), | 324 ExternalReference(Debug_Address::RestarterFrameFunctionPointer(), |
325 masm->isolate()); | 325 masm->isolate()); |
326 __ Move(rax, restarter_frame_function_slot); | 326 __ Move(rax, restarter_frame_function_slot); |
327 __ movp(Operand(rax, 0), Immediate(0)); | 327 __ movp(Operand(rax, 0), Immediate(0)); |
328 | 328 |
329 // We do not know our frame height, but set rsp based on rbp. | 329 // We do not know our frame height, but set rsp based on rbp. |
330 __ lea(rsp, Operand(rbp, -1 * kPointerSize)); | 330 __ lea(rsp, Operand(rbp, -1 * kPointerSize)); |
331 | 331 |
332 __ pop(rdi); // Function. | 332 __ Pop(rdi); // Function. |
333 __ pop(rbp); | 333 __ popq(rbp); |
334 | 334 |
335 // Load context from the function. | 335 // Load context from the function. |
336 __ movp(rsi, FieldOperand(rdi, JSFunction::kContextOffset)); | 336 __ movp(rsi, FieldOperand(rdi, JSFunction::kContextOffset)); |
337 | 337 |
338 // Get function code. | 338 // Get function code. |
339 __ movp(rdx, FieldOperand(rdi, JSFunction::kSharedFunctionInfoOffset)); | 339 __ movp(rdx, FieldOperand(rdi, JSFunction::kSharedFunctionInfoOffset)); |
340 __ movp(rdx, FieldOperand(rdx, SharedFunctionInfo::kCodeOffset)); | 340 __ movp(rdx, FieldOperand(rdx, SharedFunctionInfo::kCodeOffset)); |
341 __ lea(rdx, FieldOperand(rdx, Code::kHeaderSize)); | 341 __ lea(rdx, FieldOperand(rdx, Code::kHeaderSize)); |
342 | 342 |
343 // Re-run JSFunction, rdi is function, rsi is context. | 343 // Re-run JSFunction, rdi is function, rsi is context. |
344 __ jmp(rdx); | 344 __ jmp(rdx); |
345 } | 345 } |
346 | 346 |
347 const bool Debug::kFrameDropperSupported = true; | 347 const bool Debug::kFrameDropperSupported = true; |
348 | 348 |
349 #undef __ | 349 #undef __ |
350 | 350 |
351 #endif // ENABLE_DEBUGGER_SUPPORT | 351 #endif // ENABLE_DEBUGGER_SUPPORT |
352 | 352 |
353 } } // namespace v8::internal | 353 } } // namespace v8::internal |
354 | 354 |
355 #endif // V8_TARGET_ARCH_X64 | 355 #endif // V8_TARGET_ARCH_X64 |
OLD | NEW |