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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 #include "v8.h" | 5 #include "v8.h" | 
| 6 | 6 | 
| 7 #if V8_TARGET_ARCH_ARM | 7 #if V8_TARGET_ARCH_ARM | 
| 8 | 8 | 
| 9 #include "codegen.h" | 9 #include "codegen.h" | 
| 10 #include "debug.h" | 10 #include "debug.h" | 
| (...skipping 137 matching lines...) Expand 10 before | Expand all | Expand 10 after  Loading... | 
| 148   // jumping to the target address intended by the caller and that was | 148   // jumping to the target address intended by the caller and that was | 
| 149   // overwritten by the address of DebugBreakXXX. | 149   // overwritten by the address of DebugBreakXXX. | 
| 150   ExternalReference after_break_target = | 150   ExternalReference after_break_target = | 
| 151       ExternalReference::debug_after_break_target_address(masm->isolate()); | 151       ExternalReference::debug_after_break_target_address(masm->isolate()); | 
| 152   __ mov(ip, Operand(after_break_target)); | 152   __ mov(ip, Operand(after_break_target)); | 
| 153   __ ldr(ip, MemOperand(ip)); | 153   __ ldr(ip, MemOperand(ip)); | 
| 154   __ Jump(ip); | 154   __ Jump(ip); | 
| 155 } | 155 } | 
| 156 | 156 | 
| 157 | 157 | 
| 158 void Debug::GenerateCallICStubDebugBreak(MacroAssembler* masm) { | 158 void DebugCodegen::GenerateCallICStubDebugBreak(MacroAssembler* masm) { | 
| 159   // Register state for CallICStub | 159   // Register state for CallICStub | 
| 160   // ----------- S t a t e ------------- | 160   // ----------- S t a t e ------------- | 
| 161   //  -- r1 : function | 161   //  -- r1 : function | 
| 162   //  -- r3 : slot in feedback array (smi) | 162   //  -- r3 : slot in feedback array (smi) | 
| 163   // ----------------------------------- | 163   // ----------------------------------- | 
| 164   Generate_DebugBreakCallHelper(masm, r1.bit() | r3.bit(), 0); | 164   Generate_DebugBreakCallHelper(masm, r1.bit() | r3.bit(), 0); | 
| 165 } | 165 } | 
| 166 | 166 | 
| 167 | 167 | 
| 168 void Debug::GenerateLoadICDebugBreak(MacroAssembler* masm) { | 168 void DebugCodegen::GenerateLoadICDebugBreak(MacroAssembler* masm) { | 
| 169   // Calling convention for IC load (from ic-arm.cc). | 169   // Calling convention for IC load (from ic-arm.cc). | 
| 170   // ----------- S t a t e ------------- | 170   // ----------- S t a t e ------------- | 
| 171   //  -- r2    : name | 171   //  -- r2    : name | 
| 172   //  -- lr    : return address | 172   //  -- lr    : return address | 
| 173   //  -- r0    : receiver | 173   //  -- r0    : receiver | 
| 174   //  -- [sp]  : receiver | 174   //  -- [sp]  : receiver | 
| 175   // ----------------------------------- | 175   // ----------------------------------- | 
| 176   // Registers r0 and r2 contain objects that need to be pushed on the | 176   // Registers r0 and r2 contain objects that need to be pushed on the | 
| 177   // expression stack of the fake JS frame. | 177   // expression stack of the fake JS frame. | 
| 178   Generate_DebugBreakCallHelper(masm, r0.bit() | r2.bit(), 0); | 178   Generate_DebugBreakCallHelper(masm, r0.bit() | r2.bit(), 0); | 
| 179 } | 179 } | 
| 180 | 180 | 
| 181 | 181 | 
| 182 void Debug::GenerateStoreICDebugBreak(MacroAssembler* masm) { | 182 void DebugCodegen::GenerateStoreICDebugBreak(MacroAssembler* masm) { | 
| 183   // Calling convention for IC store (from ic-arm.cc). | 183   // Calling convention for IC store (from ic-arm.cc). | 
| 184   // ----------- S t a t e ------------- | 184   // ----------- S t a t e ------------- | 
| 185   //  -- r0    : value | 185   //  -- r0    : value | 
| 186   //  -- r1    : receiver | 186   //  -- r1    : receiver | 
| 187   //  -- r2    : name | 187   //  -- r2    : name | 
| 188   //  -- lr    : return address | 188   //  -- lr    : return address | 
| 189   // ----------------------------------- | 189   // ----------------------------------- | 
| 190   // Registers r0, r1, and r2 contain objects that need to be pushed on the | 190   // Registers r0, r1, and r2 contain objects that need to be pushed on the | 
| 191   // expression stack of the fake JS frame. | 191   // expression stack of the fake JS frame. | 
| 192   Generate_DebugBreakCallHelper(masm, r0.bit() | r1.bit() | r2.bit(), 0); | 192   Generate_DebugBreakCallHelper(masm, r0.bit() | r1.bit() | r2.bit(), 0); | 
| 193 } | 193 } | 
| 194 | 194 | 
| 195 | 195 | 
| 196 void Debug::GenerateKeyedLoadICDebugBreak(MacroAssembler* masm) { | 196 void DebugCodegen::GenerateKeyedLoadICDebugBreak(MacroAssembler* masm) { | 
| 197   // ---------- S t a t e -------------- | 197   // ---------- S t a t e -------------- | 
| 198   //  -- lr     : return address | 198   //  -- lr     : return address | 
| 199   //  -- r0     : key | 199   //  -- r0     : key | 
| 200   //  -- r1     : receiver | 200   //  -- r1     : receiver | 
| 201   Generate_DebugBreakCallHelper(masm, r0.bit() | r1.bit(), 0); | 201   Generate_DebugBreakCallHelper(masm, r0.bit() | r1.bit(), 0); | 
| 202 } | 202 } | 
| 203 | 203 | 
| 204 | 204 | 
| 205 void Debug::GenerateKeyedStoreICDebugBreak(MacroAssembler* masm) { | 205 void DebugCodegen::GenerateKeyedStoreICDebugBreak(MacroAssembler* masm) { | 
| 206   // ---------- S t a t e -------------- | 206   // ---------- S t a t e -------------- | 
| 207   //  -- r0     : value | 207   //  -- r0     : value | 
| 208   //  -- r1     : key | 208   //  -- r1     : key | 
| 209   //  -- r2     : receiver | 209   //  -- r2     : receiver | 
| 210   //  -- lr     : return address | 210   //  -- lr     : return address | 
| 211   Generate_DebugBreakCallHelper(masm, r0.bit() | r1.bit() | r2.bit(), 0); | 211   Generate_DebugBreakCallHelper(masm, r0.bit() | r1.bit() | r2.bit(), 0); | 
| 212 } | 212 } | 
| 213 | 213 | 
| 214 | 214 | 
| 215 void Debug::GenerateCompareNilICDebugBreak(MacroAssembler* masm) { | 215 void DebugCodegen::GenerateCompareNilICDebugBreak(MacroAssembler* masm) { | 
| 216   // Register state for CompareNil IC | 216   // Register state for CompareNil IC | 
| 217   // ----------- S t a t e ------------- | 217   // ----------- S t a t e ------------- | 
| 218   //  -- r0    : value | 218   //  -- r0    : value | 
| 219   // ----------------------------------- | 219   // ----------------------------------- | 
| 220   Generate_DebugBreakCallHelper(masm, r0.bit(), 0); | 220   Generate_DebugBreakCallHelper(masm, r0.bit(), 0); | 
| 221 } | 221 } | 
| 222 | 222 | 
| 223 | 223 | 
| 224 void Debug::GenerateReturnDebugBreak(MacroAssembler* masm) { | 224 void DebugCodegen::GenerateReturnDebugBreak(MacroAssembler* masm) { | 
| 225   // In places other than IC call sites it is expected that r0 is TOS which | 225   // In places other than IC call sites it is expected that r0 is TOS which | 
| 226   // is an object - this is not generally the case so this should be used with | 226   // is an object - this is not generally the case so this should be used with | 
| 227   // care. | 227   // care. | 
| 228   Generate_DebugBreakCallHelper(masm, r0.bit(), 0); | 228   Generate_DebugBreakCallHelper(masm, r0.bit(), 0); | 
| 229 } | 229 } | 
| 230 | 230 | 
| 231 | 231 | 
| 232 void Debug::GenerateCallFunctionStubDebugBreak(MacroAssembler* masm) { | 232 void DebugCodegen::GenerateCallFunctionStubDebugBreak(MacroAssembler* masm) { | 
| 233   // Register state for CallFunctionStub (from code-stubs-arm.cc). | 233   // Register state for CallFunctionStub (from code-stubs-arm.cc). | 
| 234   // ----------- S t a t e ------------- | 234   // ----------- S t a t e ------------- | 
| 235   //  -- r1 : function | 235   //  -- r1 : function | 
| 236   // ----------------------------------- | 236   // ----------------------------------- | 
| 237   Generate_DebugBreakCallHelper(masm, r1.bit(), 0); | 237   Generate_DebugBreakCallHelper(masm, r1.bit(), 0); | 
| 238 } | 238 } | 
| 239 | 239 | 
| 240 | 240 | 
| 241 void Debug::GenerateCallConstructStubDebugBreak(MacroAssembler* masm) { | 241 void DebugCodegen::GenerateCallConstructStubDebugBreak(MacroAssembler* masm) { | 
| 242   // Calling convention for CallConstructStub (from code-stubs-arm.cc) | 242   // Calling convention for CallConstructStub (from code-stubs-arm.cc) | 
| 243   // ----------- S t a t e ------------- | 243   // ----------- S t a t e ------------- | 
| 244   //  -- r0     : number of arguments (not smi) | 244   //  -- r0     : number of arguments (not smi) | 
| 245   //  -- r1     : constructor function | 245   //  -- r1     : constructor function | 
| 246   // ----------------------------------- | 246   // ----------------------------------- | 
| 247   Generate_DebugBreakCallHelper(masm, r1.bit(), r0.bit()); | 247   Generate_DebugBreakCallHelper(masm, r1.bit(), r0.bit()); | 
| 248 } | 248 } | 
| 249 | 249 | 
| 250 | 250 | 
| 251 void Debug::GenerateCallConstructStubRecordDebugBreak(MacroAssembler* masm) { | 251 void DebugCodegen::GenerateCallConstructStubRecordDebugBreak( | 
|  | 252     MacroAssembler* masm) { | 
| 252   // Calling convention for CallConstructStub (from code-stubs-arm.cc) | 253   // Calling convention for CallConstructStub (from code-stubs-arm.cc) | 
| 253   // ----------- S t a t e ------------- | 254   // ----------- S t a t e ------------- | 
| 254   //  -- r0     : number of arguments (not smi) | 255   //  -- r0     : number of arguments (not smi) | 
| 255   //  -- r1     : constructor function | 256   //  -- r1     : constructor function | 
| 256   //  -- r2     : feedback array | 257   //  -- r2     : feedback array | 
| 257   //  -- r3     : feedback slot (smi) | 258   //  -- r3     : feedback slot (smi) | 
| 258   // ----------------------------------- | 259   // ----------------------------------- | 
| 259   Generate_DebugBreakCallHelper(masm, r1.bit() | r2.bit() | r3.bit(), r0.bit()); | 260   Generate_DebugBreakCallHelper(masm, r1.bit() | r2.bit() | r3.bit(), r0.bit()); | 
| 260 } | 261 } | 
| 261 | 262 | 
| 262 | 263 | 
| 263 void Debug::GenerateSlot(MacroAssembler* masm) { | 264 void DebugCodegen::GenerateSlot(MacroAssembler* masm) { | 
| 264   // Generate enough nop's to make space for a call instruction. Avoid emitting | 265   // Generate enough nop's to make space for a call instruction. Avoid emitting | 
| 265   // the constant pool in the debug break slot code. | 266   // the constant pool in the debug break slot code. | 
| 266   Assembler::BlockConstPoolScope block_const_pool(masm); | 267   Assembler::BlockConstPoolScope block_const_pool(masm); | 
| 267   Label check_codesize; | 268   Label check_codesize; | 
| 268   __ bind(&check_codesize); | 269   __ bind(&check_codesize); | 
| 269   __ RecordDebugBreakSlot(); | 270   __ RecordDebugBreakSlot(); | 
| 270   for (int i = 0; i < Assembler::kDebugBreakSlotInstructions; i++) { | 271   for (int i = 0; i < Assembler::kDebugBreakSlotInstructions; i++) { | 
| 271     __ nop(MacroAssembler::DEBUG_BREAK_NOP); | 272     __ nop(MacroAssembler::DEBUG_BREAK_NOP); | 
| 272   } | 273   } | 
| 273   ASSERT_EQ(Assembler::kDebugBreakSlotInstructions, | 274   ASSERT_EQ(Assembler::kDebugBreakSlotInstructions, | 
| 274             masm->InstructionsGeneratedSince(&check_codesize)); | 275             masm->InstructionsGeneratedSince(&check_codesize)); | 
| 275 } | 276 } | 
| 276 | 277 | 
| 277 | 278 | 
| 278 void Debug::GenerateSlotDebugBreak(MacroAssembler* masm) { | 279 void DebugCodegen::GenerateSlotDebugBreak(MacroAssembler* masm) { | 
| 279   // In the places where a debug break slot is inserted no registers can contain | 280   // In the places where a debug break slot is inserted no registers can contain | 
| 280   // object pointers. | 281   // object pointers. | 
| 281   Generate_DebugBreakCallHelper(masm, 0, 0); | 282   Generate_DebugBreakCallHelper(masm, 0, 0); | 
| 282 } | 283 } | 
| 283 | 284 | 
| 284 | 285 | 
| 285 void Debug::GeneratePlainReturnLiveEdit(MacroAssembler* masm) { | 286 void DebugCodegen::GeneratePlainReturnLiveEdit(MacroAssembler* masm) { | 
| 286   masm->Abort(kLiveEditFrameDroppingIsNotSupportedOnArm); | 287   masm->Abort(kLiveEditFrameDroppingIsNotSupportedOnArm); | 
| 287 } | 288 } | 
| 288 | 289 | 
| 289 | 290 | 
| 290 void Debug::GenerateFrameDropperLiveEdit(MacroAssembler* masm) { | 291 void DebugCodegen::GenerateFrameDropperLiveEdit(MacroAssembler* masm) { | 
| 291   masm->Abort(kLiveEditFrameDroppingIsNotSupportedOnArm); | 292   masm->Abort(kLiveEditFrameDroppingIsNotSupportedOnArm); | 
| 292 } | 293 } | 
| 293 | 294 | 
| 294 const bool Debug::kFrameDropperSupported = false; | 295 const bool Debug::kFrameDropperSupported = false; | 
| 295 | 296 | 
| 296 #undef __ | 297 #undef __ | 
| 297 | 298 | 
| 298 } }  // namespace v8::internal | 299 } }  // namespace v8::internal | 
| 299 | 300 | 
| 300 #endif  // V8_TARGET_ARCH_ARM | 301 #endif  // V8_TARGET_ARCH_ARM | 
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