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| 1 // Copyright 2011 the V8 project authors. All rights reserved. | 1 // Copyright 2011 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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| 122 __ sar(kScratchRegister, Immediate(32)); | 122 __ sar(kScratchRegister, Immediate(32)); |
| 123 __ Integer32ToSmi(kScratchRegister, kScratchRegister); | 123 __ Integer32ToSmi(kScratchRegister, kScratchRegister); |
| 124 __ push(kScratchRegister); | 124 __ push(kScratchRegister); |
| 125 } | 125 } |
| 126 } | 126 } |
| 127 | 127 |
| 128 #ifdef DEBUG | 128 #ifdef DEBUG |
| 129 __ RecordComment("// Calling from debug break to runtime - come in - over"); | 129 __ RecordComment("// Calling from debug break to runtime - come in - over"); |
| 130 #endif | 130 #endif |
| 131 __ Set(rax, 0); // No arguments (argc == 0). | 131 __ Set(rax, 0); // No arguments (argc == 0). |
| 132 __ movq(rbx, ExternalReference::debug_break()); | 132 __ movq(rbx, ExternalReference::debug_break(masm->isolate())); |
| 133 | 133 |
| 134 CEntryStub ceb(1); | 134 CEntryStub ceb(1); |
| 135 __ CallStub(&ceb); | 135 __ CallStub(&ceb); |
| 136 | 136 |
| 137 // Restore the register values from the expression stack. | 137 // Restore the register values from the expression stack. |
| 138 for (int i = kNumJSCallerSaved - 1; i >= 0; i--) { | 138 for (int i = kNumJSCallerSaved - 1; i >= 0; i--) { |
| 139 int r = JSCallerSavedCode(i); | 139 int r = JSCallerSavedCode(i); |
| 140 Register reg = { r }; | 140 Register reg = { r }; |
| 141 if (FLAG_debug_code) { | 141 if (FLAG_debug_code) { |
| 142 __ Set(reg, kDebugZapValue); | 142 __ Set(reg, kDebugZapValue); |
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| 161 // If this call did not replace a call but patched other code then there will | 161 // If this call did not replace a call but patched other code then there will |
| 162 // be an unwanted return address left on the stack. Here we get rid of that. | 162 // be an unwanted return address left on the stack. Here we get rid of that. |
| 163 if (convert_call_to_jmp) { | 163 if (convert_call_to_jmp) { |
| 164 __ addq(rsp, Immediate(kPointerSize)); | 164 __ addq(rsp, Immediate(kPointerSize)); |
| 165 } | 165 } |
| 166 | 166 |
| 167 // Now that the break point has been handled, resume normal execution by | 167 // Now that the break point has been handled, resume normal execution by |
| 168 // jumping to the target address intended by the caller and that was | 168 // jumping to the target address intended by the caller and that was |
| 169 // overwritten by the address of DebugBreakXXX. | 169 // overwritten by the address of DebugBreakXXX. |
| 170 ExternalReference after_break_target = | 170 ExternalReference after_break_target = |
| 171 ExternalReference(Debug_Address::AfterBreakTarget()); | 171 ExternalReference(Debug_Address::AfterBreakTarget(), masm->isolate()); |
| 172 __ movq(kScratchRegister, after_break_target); | 172 __ movq(kScratchRegister, after_break_target); |
| 173 __ jmp(Operand(kScratchRegister, 0)); | 173 __ jmp(Operand(kScratchRegister, 0)); |
| 174 } | 174 } |
| 175 | 175 |
| 176 | 176 |
| 177 void Debug::GenerateLoadICDebugBreak(MacroAssembler* masm) { | 177 void Debug::GenerateLoadICDebugBreak(MacroAssembler* masm) { |
| 178 // Register state for IC load call (from ic-x64.cc). | 178 // Register state for IC load call (from ic-x64.cc). |
| 179 // ----------- S t a t e ------------- | 179 // ----------- S t a t e ------------- |
| 180 // -- rax : receiver | 180 // -- rax : receiver |
| 181 // -- rcx : name | 181 // -- rcx : name |
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| 277 } | 277 } |
| 278 | 278 |
| 279 | 279 |
| 280 void Debug::GeneratePlainReturnLiveEdit(MacroAssembler* masm) { | 280 void Debug::GeneratePlainReturnLiveEdit(MacroAssembler* masm) { |
| 281 masm->ret(0); | 281 masm->ret(0); |
| 282 } | 282 } |
| 283 | 283 |
| 284 | 284 |
| 285 void Debug::GenerateFrameDropperLiveEdit(MacroAssembler* masm) { | 285 void Debug::GenerateFrameDropperLiveEdit(MacroAssembler* masm) { |
| 286 ExternalReference restarter_frame_function_slot = | 286 ExternalReference restarter_frame_function_slot = |
| 287 ExternalReference(Debug_Address::RestarterFrameFunctionPointer()); | 287 ExternalReference(Debug_Address::RestarterFrameFunctionPointer(), |
| 288 masm->isolate()); |
| 288 __ movq(rax, restarter_frame_function_slot); | 289 __ movq(rax, restarter_frame_function_slot); |
| 289 __ movq(Operand(rax, 0), Immediate(0)); | 290 __ movq(Operand(rax, 0), Immediate(0)); |
| 290 | 291 |
| 291 // We do not know our frame height, but set rsp based on rbp. | 292 // We do not know our frame height, but set rsp based on rbp. |
| 292 __ lea(rsp, Operand(rbp, -1 * kPointerSize)); | 293 __ lea(rsp, Operand(rbp, -1 * kPointerSize)); |
| 293 | 294 |
| 294 __ pop(rdi); // Function. | 295 __ pop(rdi); // Function. |
| 295 __ pop(rbp); | 296 __ pop(rbp); |
| 296 | 297 |
| 297 // Load context from the function. | 298 // Load context from the function. |
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| 308 | 309 |
| 309 const bool Debug::kFrameDropperSupported = true; | 310 const bool Debug::kFrameDropperSupported = true; |
| 310 | 311 |
| 311 #undef __ | 312 #undef __ |
| 312 | 313 |
| 313 #endif // ENABLE_DEBUGGER_SUPPORT | 314 #endif // ENABLE_DEBUGGER_SUPPORT |
| 314 | 315 |
| 315 } } // namespace v8::internal | 316 } } // namespace v8::internal |
| 316 | 317 |
| 317 #endif // V8_TARGET_ARCH_X64 | 318 #endif // V8_TARGET_ARCH_X64 |
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