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Issue 2751973002: MIPS: Move ldc1/sdc1 to macro-assembler. (Closed)
Patch Set: Created 3 years, 9 months ago
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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 // 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 "src/codegen.h" 5 #include "src/codegen.h"
6 #include "src/deoptimizer.h" 6 #include "src/deoptimizer.h"
7 #include "src/full-codegen/full-codegen.h" 7 #include "src/full-codegen/full-codegen.h"
8 #include "src/register-configuration.h" 8 #include "src/register-configuration.h"
9 #include "src/safepoint-table.h" 9 #include "src/safepoint-table.h"
10 10
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115 115
116 const int kDoubleRegsSize = kDoubleSize * DoubleRegister::kMaxNumRegisters; 116 const int kDoubleRegsSize = kDoubleSize * DoubleRegister::kMaxNumRegisters;
117 117
118 // Save all FPU registers before messing with them. 118 // Save all FPU registers before messing with them.
119 __ Subu(sp, sp, Operand(kDoubleRegsSize)); 119 __ Subu(sp, sp, Operand(kDoubleRegsSize));
120 const RegisterConfiguration* config = RegisterConfiguration::Crankshaft(); 120 const RegisterConfiguration* config = RegisterConfiguration::Crankshaft();
121 for (int i = 0; i < config->num_allocatable_double_registers(); ++i) { 121 for (int i = 0; i < config->num_allocatable_double_registers(); ++i) {
122 int code = config->GetAllocatableDoubleCode(i); 122 int code = config->GetAllocatableDoubleCode(i);
123 const DoubleRegister fpu_reg = DoubleRegister::from_code(code); 123 const DoubleRegister fpu_reg = DoubleRegister::from_code(code);
124 int offset = code * kDoubleSize; 124 int offset = code * kDoubleSize;
125 __ sdc1(fpu_reg, MemOperand(sp, offset)); 125 __ Sdc1(fpu_reg, MemOperand(sp, offset));
126 } 126 }
127 127
128 // Push saved_regs (needed to populate FrameDescription::registers_). 128 // Push saved_regs (needed to populate FrameDescription::registers_).
129 // Leave gaps for other registers. 129 // Leave gaps for other registers.
130 __ Subu(sp, sp, kNumberOfRegisters * kPointerSize); 130 __ Subu(sp, sp, kNumberOfRegisters * kPointerSize);
131 for (int16_t i = kNumberOfRegisters - 1; i >= 0; i--) { 131 for (int16_t i = kNumberOfRegisters - 1; i >= 0; i--) {
132 if ((saved_regs & (1 << i)) != 0) { 132 if ((saved_regs & (1 << i)) != 0) {
133 __ sw(ToRegister(i), MemOperand(sp, kPointerSize * i)); 133 __ sw(ToRegister(i), MemOperand(sp, kPointerSize * i));
134 } 134 }
135 } 135 }
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192 } 192 }
193 } 193 }
194 194
195 int double_regs_offset = FrameDescription::double_registers_offset(); 195 int double_regs_offset = FrameDescription::double_registers_offset();
196 // Copy FPU registers to 196 // Copy FPU registers to
197 // double_registers_[DoubleRegister::kNumAllocatableRegisters] 197 // double_registers_[DoubleRegister::kNumAllocatableRegisters]
198 for (int i = 0; i < config->num_allocatable_double_registers(); ++i) { 198 for (int i = 0; i < config->num_allocatable_double_registers(); ++i) {
199 int code = config->GetAllocatableDoubleCode(i); 199 int code = config->GetAllocatableDoubleCode(i);
200 int dst_offset = code * kDoubleSize + double_regs_offset; 200 int dst_offset = code * kDoubleSize + double_regs_offset;
201 int src_offset = code * kDoubleSize + kNumberOfRegisters * kPointerSize; 201 int src_offset = code * kDoubleSize + kNumberOfRegisters * kPointerSize;
202 __ ldc1(f0, MemOperand(sp, src_offset)); 202 __ Ldc1(f0, MemOperand(sp, src_offset));
203 __ sdc1(f0, MemOperand(a1, dst_offset)); 203 __ Sdc1(f0, MemOperand(a1, dst_offset));
204 } 204 }
205 205
206 // Remove the bailout id and the saved registers from the stack. 206 // Remove the bailout id and the saved registers from the stack.
207 __ Addu(sp, sp, Operand(kSavedRegistersAreaSize + (1 * kPointerSize))); 207 __ Addu(sp, sp, Operand(kSavedRegistersAreaSize + (1 * kPointerSize)));
208 208
209 // Compute a pointer to the unwinding limit in register a2; that is 209 // Compute a pointer to the unwinding limit in register a2; that is
210 // the first stack slot not part of the input frame. 210 // the first stack slot not part of the input frame.
211 __ lw(a2, MemOperand(a1, FrameDescription::frame_size_offset())); 211 __ lw(a2, MemOperand(a1, FrameDescription::frame_size_offset()));
212 __ Addu(a2, a2, sp); 212 __ Addu(a2, a2, sp);
213 213
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263 263
264 __ Addu(t0, t0, Operand(kPointerSize)); 264 __ Addu(t0, t0, Operand(kPointerSize));
265 __ bind(&outer_loop_header); 265 __ bind(&outer_loop_header);
266 __ BranchShort(&outer_push_loop, lt, t0, Operand(a1)); 266 __ BranchShort(&outer_push_loop, lt, t0, Operand(a1));
267 267
268 __ lw(a1, MemOperand(a0, Deoptimizer::input_offset())); 268 __ lw(a1, MemOperand(a0, Deoptimizer::input_offset()));
269 for (int i = 0; i < config->num_allocatable_double_registers(); ++i) { 269 for (int i = 0; i < config->num_allocatable_double_registers(); ++i) {
270 int code = config->GetAllocatableDoubleCode(i); 270 int code = config->GetAllocatableDoubleCode(i);
271 const DoubleRegister fpu_reg = DoubleRegister::from_code(code); 271 const DoubleRegister fpu_reg = DoubleRegister::from_code(code);
272 int src_offset = code * kDoubleSize + double_regs_offset; 272 int src_offset = code * kDoubleSize + double_regs_offset;
273 __ ldc1(fpu_reg, MemOperand(a1, src_offset)); 273 __ Ldc1(fpu_reg, MemOperand(a1, src_offset));
274 } 274 }
275 275
276 // Push state, pc, and continuation from the last output frame. 276 // Push state, pc, and continuation from the last output frame.
277 __ lw(t2, MemOperand(a2, FrameDescription::state_offset())); 277 __ lw(t2, MemOperand(a2, FrameDescription::state_offset()));
278 __ push(t2); 278 __ push(t2);
279 279
280 __ lw(t2, MemOperand(a2, FrameDescription::pc_offset())); 280 __ lw(t2, MemOperand(a2, FrameDescription::pc_offset()));
281 __ push(t2); 281 __ push(t2);
282 __ lw(t2, MemOperand(a2, FrameDescription::continuation_offset())); 282 __ lw(t2, MemOperand(a2, FrameDescription::continuation_offset()));
283 __ push(t2); 283 __ push(t2);
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382 // No embedded constant pool support. 382 // No embedded constant pool support.
383 UNREACHABLE(); 383 UNREACHABLE();
384 } 384 }
385 385
386 386
387 #undef __ 387 #undef __
388 388
389 389
390 } // namespace internal 390 } // namespace internal
391 } // namespace v8 391 } // namespace v8
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