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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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| 172 for (int i = 0; i < XMMRegister::NumAllocatableRegisters(); ++i) { | 172 for (int i = 0; i < XMMRegister::NumAllocatableRegisters(); ++i) { |
| 173 XMMRegister xmm_reg = XMMRegister::FromAllocationIndex(i); | 173 XMMRegister xmm_reg = XMMRegister::FromAllocationIndex(i); |
| 174 int offset = i * kDoubleSize; | 174 int offset = i * kDoubleSize; |
| 175 __ movsd(Operand(rsp, offset), xmm_reg); | 175 __ movsd(Operand(rsp, offset), xmm_reg); |
| 176 } | 176 } |
| 177 | 177 |
| 178 // We push all registers onto the stack, even though we do not need | 178 // We push all registers onto the stack, even though we do not need |
| 179 // to restore all later. | 179 // to restore all later. |
| 180 for (int i = 0; i < kNumberOfRegisters; i++) { | 180 for (int i = 0; i < kNumberOfRegisters; i++) { |
| 181 Register r = Register::from_code(i); | 181 Register r = Register::from_code(i); |
| 182 __ push(r); | 182 __ pushq(r); |
| 183 } | 183 } |
| 184 | 184 |
| 185 const int kSavedRegistersAreaSize = kNumberOfRegisters * kRegisterSize + | 185 const int kSavedRegistersAreaSize = kNumberOfRegisters * kRegisterSize + |
| 186 kDoubleRegsSize; | 186 kDoubleRegsSize; |
| 187 | 187 |
| 188 // We use this to keep the value of the fifth argument temporarily. | 188 // We use this to keep the value of the fifth argument temporarily. |
| 189 // Unfortunately we can't store it directly in r8 (used for passing | 189 // Unfortunately we can't store it directly in r8 (used for passing |
| 190 // this on linux), since it is another parameter passing register on windows. | 190 // this on linux), since it is another parameter passing register on windows. |
| 191 Register arg5 = r11; | 191 Register arg5 = r11; |
| 192 | 192 |
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| 223 { AllowExternalCallThatCantCauseGC scope(masm()); | 223 { AllowExternalCallThatCantCauseGC scope(masm()); |
| 224 __ CallCFunction(ExternalReference::new_deoptimizer_function(isolate()), 6); | 224 __ CallCFunction(ExternalReference::new_deoptimizer_function(isolate()), 6); |
| 225 } | 225 } |
| 226 // Preserve deoptimizer object in register rax and get the input | 226 // Preserve deoptimizer object in register rax and get the input |
| 227 // frame descriptor pointer. | 227 // frame descriptor pointer. |
| 228 __ movp(rbx, Operand(rax, Deoptimizer::input_offset())); | 228 __ movp(rbx, Operand(rax, Deoptimizer::input_offset())); |
| 229 | 229 |
| 230 // Fill in the input registers. | 230 // Fill in the input registers. |
| 231 for (int i = kNumberOfRegisters -1; i >= 0; i--) { | 231 for (int i = kNumberOfRegisters -1; i >= 0; i--) { |
| 232 int offset = (i * kPointerSize) + FrameDescription::registers_offset(); | 232 int offset = (i * kPointerSize) + FrameDescription::registers_offset(); |
| 233 __ pop(Operand(rbx, offset)); | 233 __ Pop(Operand(rbx, offset)); |
| 234 } | 234 } |
| 235 | 235 |
| 236 // Fill in the double input registers. | 236 // Fill in the double input registers. |
| 237 int double_regs_offset = FrameDescription::double_registers_offset(); | 237 int double_regs_offset = FrameDescription::double_registers_offset(); |
| 238 for (int i = 0; i < XMMRegister::NumAllocatableRegisters(); i++) { | 238 for (int i = 0; i < XMMRegister::NumAllocatableRegisters(); i++) { |
| 239 int dst_offset = i * kDoubleSize + double_regs_offset; | 239 int dst_offset = i * kDoubleSize + double_regs_offset; |
| 240 __ pop(Operand(rbx, dst_offset)); | 240 __ popq(Operand(rbx, dst_offset)); |
| 241 } | 241 } |
| 242 | 242 |
| 243 // Remove the bailout id and return address from the stack. | 243 // Remove the bailout id and return address from the stack. |
| 244 __ addq(rsp, Immediate(1 * kRegisterSize + kPCOnStackSize)); | 244 __ addq(rsp, Immediate(1 * kRegisterSize + kPCOnStackSize)); |
| 245 | 245 |
| 246 // Compute a pointer to the unwinding limit in register rcx; that is | 246 // Compute a pointer to the unwinding limit in register rcx; that is |
| 247 // the first stack slot not part of the input frame. | 247 // the first stack slot not part of the input frame. |
| 248 __ movp(rcx, Operand(rbx, FrameDescription::frame_size_offset())); | 248 __ movp(rcx, Operand(rbx, FrameDescription::frame_size_offset())); |
| 249 __ addq(rcx, rsp); | 249 __ addq(rcx, rsp); |
| 250 | 250 |
| 251 // Unwind the stack down to - but not including - the unwinding | 251 // Unwind the stack down to - but not including - the unwinding |
| 252 // limit and copy the contents of the activation frame to the input | 252 // limit and copy the contents of the activation frame to the input |
| 253 // frame description. | 253 // frame description. |
| 254 __ lea(rdx, Operand(rbx, FrameDescription::frame_content_offset())); | 254 __ lea(rdx, Operand(rbx, FrameDescription::frame_content_offset())); |
| 255 Label pop_loop_header; | 255 Label pop_loop_header; |
| 256 __ jmp(&pop_loop_header); | 256 __ jmp(&pop_loop_header); |
| 257 Label pop_loop; | 257 Label pop_loop; |
| 258 __ bind(&pop_loop); | 258 __ bind(&pop_loop); |
| 259 __ pop(Operand(rdx, 0)); | 259 __ Pop(Operand(rdx, 0)); |
| 260 __ addq(rdx, Immediate(sizeof(intptr_t))); | 260 __ addq(rdx, Immediate(sizeof(intptr_t))); |
| 261 __ bind(&pop_loop_header); | 261 __ bind(&pop_loop_header); |
| 262 __ cmpq(rcx, rsp); | 262 __ cmpq(rcx, rsp); |
| 263 __ j(not_equal, &pop_loop); | 263 __ j(not_equal, &pop_loop); |
| 264 | 264 |
| 265 // Compute the output frame in the deoptimizer. | 265 // Compute the output frame in the deoptimizer. |
| 266 __ push(rax); | 266 __ pushq(rax); |
| 267 __ PrepareCallCFunction(2); | 267 __ PrepareCallCFunction(2); |
| 268 __ movp(arg_reg_1, rax); | 268 __ movp(arg_reg_1, rax); |
| 269 __ LoadAddress(arg_reg_2, ExternalReference::isolate_address(isolate())); | 269 __ LoadAddress(arg_reg_2, ExternalReference::isolate_address(isolate())); |
| 270 { | 270 { |
| 271 AllowExternalCallThatCantCauseGC scope(masm()); | 271 AllowExternalCallThatCantCauseGC scope(masm()); |
| 272 __ CallCFunction( | 272 __ CallCFunction( |
| 273 ExternalReference::compute_output_frames_function(isolate()), 2); | 273 ExternalReference::compute_output_frames_function(isolate()), 2); |
| 274 } | 274 } |
| 275 __ pop(rax); | 275 __ popq(rax); |
| 276 | 276 |
| 277 // Replace the current frame with the output frames. | 277 // Replace the current frame with the output frames. |
| 278 Label outer_push_loop, inner_push_loop, | 278 Label outer_push_loop, inner_push_loop, |
| 279 outer_loop_header, inner_loop_header; | 279 outer_loop_header, inner_loop_header; |
| 280 // Outer loop state: rax = current FrameDescription**, rdx = one past the | 280 // Outer loop state: rax = current FrameDescription**, rdx = one past the |
| 281 // last FrameDescription**. | 281 // last FrameDescription**. |
| 282 __ movl(rdx, Operand(rax, Deoptimizer::output_count_offset())); | 282 __ movl(rdx, Operand(rax, Deoptimizer::output_count_offset())); |
| 283 __ movp(rax, Operand(rax, Deoptimizer::output_offset())); | 283 __ movp(rax, Operand(rax, Deoptimizer::output_offset())); |
| 284 __ lea(rdx, Operand(rax, rdx, times_pointer_size, 0)); | 284 __ lea(rdx, Operand(rax, rdx, times_pointer_size, 0)); |
| 285 __ jmp(&outer_loop_header); | 285 __ jmp(&outer_loop_header); |
| 286 __ bind(&outer_push_loop); | 286 __ bind(&outer_push_loop); |
| 287 // Inner loop state: rbx = current FrameDescription*, rcx = loop index. | 287 // Inner loop state: rbx = current FrameDescription*, rcx = loop index. |
| 288 __ movp(rbx, Operand(rax, 0)); | 288 __ movp(rbx, Operand(rax, 0)); |
| 289 __ movp(rcx, Operand(rbx, FrameDescription::frame_size_offset())); | 289 __ movp(rcx, Operand(rbx, FrameDescription::frame_size_offset())); |
| 290 __ jmp(&inner_loop_header); | 290 __ jmp(&inner_loop_header); |
| 291 __ bind(&inner_push_loop); | 291 __ bind(&inner_push_loop); |
| 292 __ subq(rcx, Immediate(sizeof(intptr_t))); | 292 __ subq(rcx, Immediate(sizeof(intptr_t))); |
| 293 __ push(Operand(rbx, rcx, times_1, FrameDescription::frame_content_offset())); | 293 __ Push(Operand(rbx, rcx, times_1, FrameDescription::frame_content_offset())); |
| 294 __ bind(&inner_loop_header); | 294 __ bind(&inner_loop_header); |
| 295 __ testq(rcx, rcx); | 295 __ testq(rcx, rcx); |
| 296 __ j(not_zero, &inner_push_loop); | 296 __ j(not_zero, &inner_push_loop); |
| 297 __ addq(rax, Immediate(kPointerSize)); | 297 __ addq(rax, Immediate(kPointerSize)); |
| 298 __ bind(&outer_loop_header); | 298 __ bind(&outer_loop_header); |
| 299 __ cmpq(rax, rdx); | 299 __ cmpq(rax, rdx); |
| 300 __ j(below, &outer_push_loop); | 300 __ j(below, &outer_push_loop); |
| 301 | 301 |
| 302 for (int i = 0; i < XMMRegister::NumAllocatableRegisters(); ++i) { | 302 for (int i = 0; i < XMMRegister::NumAllocatableRegisters(); ++i) { |
| 303 XMMRegister xmm_reg = XMMRegister::FromAllocationIndex(i); | 303 XMMRegister xmm_reg = XMMRegister::FromAllocationIndex(i); |
| 304 int src_offset = i * kDoubleSize + double_regs_offset; | 304 int src_offset = i * kDoubleSize + double_regs_offset; |
| 305 __ movsd(xmm_reg, Operand(rbx, src_offset)); | 305 __ movsd(xmm_reg, Operand(rbx, src_offset)); |
| 306 } | 306 } |
| 307 | 307 |
| 308 // Push state, pc, and continuation from the last output frame. | 308 // Push state, pc, and continuation from the last output frame. |
| 309 __ push(Operand(rbx, FrameDescription::state_offset())); | 309 __ Push(Operand(rbx, FrameDescription::state_offset())); |
| 310 __ push(Operand(rbx, FrameDescription::pc_offset())); | 310 __ Push(Operand(rbx, FrameDescription::pc_offset())); |
| 311 __ push(Operand(rbx, FrameDescription::continuation_offset())); | 311 __ Push(Operand(rbx, FrameDescription::continuation_offset())); |
| 312 | 312 |
| 313 // Push the registers from the last output frame. | 313 // Push the registers from the last output frame. |
| 314 for (int i = 0; i < kNumberOfRegisters; i++) { | 314 for (int i = 0; i < kNumberOfRegisters; i++) { |
| 315 int offset = (i * kPointerSize) + FrameDescription::registers_offset(); | 315 int offset = (i * kPointerSize) + FrameDescription::registers_offset(); |
| 316 __ push(Operand(rbx, offset)); | 316 __ Push(Operand(rbx, offset)); |
| 317 } | 317 } |
| 318 | 318 |
| 319 // Restore the registers from the stack. | 319 // Restore the registers from the stack. |
| 320 for (int i = kNumberOfRegisters - 1; i >= 0 ; i--) { | 320 for (int i = kNumberOfRegisters - 1; i >= 0 ; i--) { |
| 321 Register r = Register::from_code(i); | 321 Register r = Register::from_code(i); |
| 322 // Do not restore rsp, simply pop the value into the next register | 322 // Do not restore rsp, simply pop the value into the next register |
| 323 // and overwrite this afterwards. | 323 // and overwrite this afterwards. |
| 324 if (r.is(rsp)) { | 324 if (r.is(rsp)) { |
| 325 ASSERT(i > 0); | 325 ASSERT(i > 0); |
| 326 r = Register::from_code(i - 1); | 326 r = Register::from_code(i - 1); |
| 327 } | 327 } |
| 328 __ pop(r); | 328 __ popq(r); |
| 329 } | 329 } |
| 330 | 330 |
| 331 // Set up the roots register. | 331 // Set up the roots register. |
| 332 __ InitializeRootRegister(); | 332 __ InitializeRootRegister(); |
| 333 __ InitializeSmiConstantRegister(); | 333 __ InitializeSmiConstantRegister(); |
| 334 | 334 |
| 335 // Return to the continuation point. | 335 // Return to the continuation point. |
| 336 __ ret(0); | 336 __ ret(0); |
| 337 } | 337 } |
| 338 | 338 |
| 339 | 339 |
| 340 void Deoptimizer::TableEntryGenerator::GeneratePrologue() { | 340 void Deoptimizer::TableEntryGenerator::GeneratePrologue() { |
| 341 // Create a sequence of deoptimization entries. | 341 // Create a sequence of deoptimization entries. |
| 342 Label done; | 342 Label done; |
| 343 for (int i = 0; i < count(); i++) { | 343 for (int i = 0; i < count(); i++) { |
| 344 int start = masm()->pc_offset(); | 344 int start = masm()->pc_offset(); |
| 345 USE(start); | 345 USE(start); |
| 346 __ push_imm32(i); | 346 __ pushq_imm32(i); |
| 347 __ jmp(&done); | 347 __ jmp(&done); |
| 348 ASSERT(masm()->pc_offset() - start == table_entry_size_); | 348 ASSERT(masm()->pc_offset() - start == table_entry_size_); |
| 349 } | 349 } |
| 350 __ bind(&done); | 350 __ bind(&done); |
| 351 } | 351 } |
| 352 | 352 |
| 353 | 353 |
| 354 void FrameDescription::SetCallerPc(unsigned offset, intptr_t value) { | 354 void FrameDescription::SetCallerPc(unsigned offset, intptr_t value) { |
| 355 SetFrameSlot(offset, value); | 355 SetFrameSlot(offset, value); |
| 356 } | 356 } |
| 357 | 357 |
| 358 | 358 |
| 359 void FrameDescription::SetCallerFp(unsigned offset, intptr_t value) { | 359 void FrameDescription::SetCallerFp(unsigned offset, intptr_t value) { |
| 360 SetFrameSlot(offset, value); | 360 SetFrameSlot(offset, value); |
| 361 } | 361 } |
| 362 | 362 |
| 363 | 363 |
| 364 void FrameDescription::SetCallerConstantPool(unsigned offset, intptr_t value) { | 364 void FrameDescription::SetCallerConstantPool(unsigned offset, intptr_t value) { |
| 365 // No out-of-line constant pool support. | 365 // No out-of-line constant pool support. |
| 366 UNREACHABLE(); | 366 UNREACHABLE(); |
| 367 } | 367 } |
| 368 | 368 |
| 369 | 369 |
| 370 #undef __ | 370 #undef __ |
| 371 | 371 |
| 372 | 372 |
| 373 } } // namespace v8::internal | 373 } } // namespace v8::internal |
| 374 | 374 |
| 375 #endif // V8_TARGET_ARCH_X64 | 375 #endif // V8_TARGET_ARCH_X64 |
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