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Issue 1484893003: [debugger] simplify reloc info for debug break slots. (Closed) Base URL: https://chromium.googlesource.com/v8/v8.git@master
Patch Set: Created 5 years 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 // Use of this source code is governed by a BSD-style license that can be 2 // Use of this source code is governed by a BSD-style license that can be
3 // found in the LICENSE file. 3 // found in the LICENSE file.
4 4
5 #if V8_TARGET_ARCH_MIPS64 5 #if V8_TARGET_ARCH_MIPS64
6 6
7 #include "src/codegen.h" 7 #include "src/codegen.h"
8 #include "src/debug/debug.h" 8 #include "src/debug/debug.h"
9 9
10 namespace v8 { 10 namespace v8 {
11 namespace internal { 11 namespace internal {
12 12
13 #define __ ACCESS_MASM(masm) 13 #define __ ACCESS_MASM(masm)
14 14
15 void EmitDebugBreakSlot(MacroAssembler* masm) { 15 void EmitDebugBreakSlot(MacroAssembler* masm) {
16 Label check_size; 16 Label check_size;
17 __ bind(&check_size); 17 __ bind(&check_size);
18 for (int i = 0; i < Assembler::kDebugBreakSlotInstructions; i++) { 18 for (int i = 0; i < Assembler::kDebugBreakSlotInstructions; i++) {
19 __ nop(MacroAssembler::DEBUG_BREAK_NOP); 19 __ nop(MacroAssembler::DEBUG_BREAK_NOP);
20 } 20 }
21 DCHECK_EQ(Assembler::kDebugBreakSlotInstructions, 21 DCHECK_EQ(Assembler::kDebugBreakSlotInstructions,
22 masm->InstructionsGeneratedSince(&check_size)); 22 masm->InstructionsGeneratedSince(&check_size));
23 } 23 }
24 24
25 25
26 void DebugCodegen::GenerateSlot(MacroAssembler* masm, RelocInfo::Mode mode, 26 void DebugCodegen::GenerateSlot(MacroAssembler* masm, RelocInfo::Mode mode) {
27 int call_argc) {
28 // Generate enough nop's to make space for a call instruction. Avoid emitting 27 // Generate enough nop's to make space for a call instruction. Avoid emitting
29 // the trampoline pool in the debug break slot code. 28 // the trampoline pool in the debug break slot code.
30 Assembler::BlockTrampolinePoolScope block_pool(masm); 29 Assembler::BlockTrampolinePoolScope block_pool(masm);
31 masm->RecordDebugBreakSlot(mode, call_argc); 30 masm->RecordDebugBreakSlot(mode);
32 EmitDebugBreakSlot(masm); 31 EmitDebugBreakSlot(masm);
33 } 32 }
34 33
35 34
36 void DebugCodegen::ClearDebugBreakSlot(Isolate* isolate, Address pc) { 35 void DebugCodegen::ClearDebugBreakSlot(Isolate* isolate, Address pc) {
37 CodePatcher patcher(isolate, pc, Assembler::kDebugBreakSlotInstructions); 36 CodePatcher patcher(isolate, pc, Assembler::kDebugBreakSlotInstructions);
38 EmitDebugBreakSlot(patcher.masm()); 37 EmitDebugBreakSlot(patcher.masm());
39 } 38 }
40 39
41 40
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142 141
143 142
144 const bool LiveEdit::kFrameDropperSupported = true; 143 const bool LiveEdit::kFrameDropperSupported = true;
145 144
146 #undef __ 145 #undef __
147 146
148 } // namespace internal 147 } // namespace internal
149 } // namespace v8 148 } // namespace v8
150 149
151 #endif // V8_TARGET_ARCH_MIPS64 150 #endif // V8_TARGET_ARCH_MIPS64
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