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1 // Copyright 2015 the V8 project authors. All rights reserved. | 1 // Copyright 2015 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/assembler.h" | 5 #include "src/assembler.h" |
6 #include "src/base/lazy-instance.h" | 6 #include "src/base/lazy-instance.h" |
7 #include "src/macro-assembler.h" | 7 #include "src/macro-assembler.h" |
8 #include "src/register-configuration.h" | 8 #include "src/register-configuration.h" |
9 | 9 |
10 #include "src/wasm/wasm-module.h" | 10 #include "src/wasm/wasm-module.h" |
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171 int fp_offset; | 171 int fp_offset; |
172 const DoubleRegister* fp_regs; | 172 const DoubleRegister* fp_regs; |
173 | 173 |
174 int stack_offset; | 174 int stack_offset; |
175 | 175 |
176 LinkageLocation Next(LocalType type) { | 176 LinkageLocation Next(LocalType type) { |
177 if (IsFloatingPoint(type)) { | 177 if (IsFloatingPoint(type)) { |
178 // Allocate a floating point register/stack location. | 178 // Allocate a floating point register/stack location. |
179 if (fp_offset < fp_count) { | 179 if (fp_offset < fp_count) { |
180 DoubleRegister reg = fp_regs[fp_offset++]; | 180 DoubleRegister reg = fp_regs[fp_offset++]; |
| 181 #if V8_TARGET_ARCH_ARM |
| 182 // Allocate floats using a double register, but modify the code to |
| 183 // reflect how ARM FP registers alias. |
| 184 // TODO(bbudge) Modify wasm linkage to allow use of all float regs. |
| 185 if (type == kAstF32) { |
| 186 int float_reg_code = reg.code() * 2; |
| 187 DCHECK(float_reg_code < RegisterConfiguration::kMaxFPRegisters); |
| 188 return regloc(DoubleRegister::from_code(float_reg_code), |
| 189 MachineTypeFor(type)); |
| 190 } |
| 191 #endif |
181 return regloc(reg, MachineTypeFor(type)); | 192 return regloc(reg, MachineTypeFor(type)); |
182 } else { | 193 } else { |
183 int offset = -1 - stack_offset; | 194 int offset = -1 - stack_offset; |
184 stack_offset += Words(type); | 195 stack_offset += Words(type); |
185 return stackloc(offset, MachineTypeFor(type)); | 196 return stackloc(offset, MachineTypeFor(type)); |
186 } | 197 } |
187 } else { | 198 } else { |
188 // Allocate a general purpose register/stack location. | 199 // Allocate a general purpose register/stack location. |
189 if (gp_offset < gp_count) { | 200 if (gp_offset < gp_count) { |
190 return regloc(gp_regs[gp_offset++], MachineTypeFor(type)); | 201 return regloc(gp_regs[gp_offset++], MachineTypeFor(type)); |
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378 CallDescriptor* ModuleEnv::GetI32WasmCallDescriptorForSimd( | 389 CallDescriptor* ModuleEnv::GetI32WasmCallDescriptorForSimd( |
379 Zone* zone, CallDescriptor* descriptor) { | 390 Zone* zone, CallDescriptor* descriptor) { |
380 return ReplaceTypeInCallDescriptorWith(zone, descriptor, 4, | 391 return ReplaceTypeInCallDescriptorWith(zone, descriptor, 4, |
381 MachineType::Simd128(), | 392 MachineType::Simd128(), |
382 MachineRepresentation::kWord32); | 393 MachineRepresentation::kWord32); |
383 } | 394 } |
384 | 395 |
385 } // namespace wasm | 396 } // namespace wasm |
386 } // namespace internal | 397 } // namespace internal |
387 } // namespace v8 | 398 } // namespace v8 |
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