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Diffstat (limited to '')
-rw-r--r-- | js/src/wasm/WasmBCClass-inl.h | 126 |
1 files changed, 126 insertions, 0 deletions
diff --git a/js/src/wasm/WasmBCClass-inl.h b/js/src/wasm/WasmBCClass-inl.h new file mode 100644 index 0000000000..2aaeb881e3 --- /dev/null +++ b/js/src/wasm/WasmBCClass-inl.h @@ -0,0 +1,126 @@ +/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- + * vim: set ts=8 sts=2 et sw=2 tw=80: + * + * Copyright 2016 Mozilla Foundation + * + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ + +// This is an INTERNAL header for Wasm baseline compiler: inline BaseCompiler +// methods that don't fit in any other group in particular. + +#ifndef wasm_wasm_baseline_object_inl_h +#define wasm_wasm_baseline_object_inl_h + +namespace js { +namespace wasm { + +const FuncType& BaseCompiler::funcType() const { + return *moduleEnv_.funcs[func_.index].type; +} + +bool BaseCompiler::usesMemory() const { + return moduleEnv_.memories.length() > 0; +} + +bool BaseCompiler::usesSharedMemory(uint32_t memoryIndex) const { + return moduleEnv_.usesSharedMemory(memoryIndex); +} + +const Local& BaseCompiler::localFromSlot(uint32_t slot, MIRType type) { + MOZ_ASSERT(localInfo_[slot].type == type); + return localInfo_[slot]; +} + +BytecodeOffset BaseCompiler::bytecodeOffset() const { + return iter_.bytecodeOffset(); +} + +bool BaseCompiler::isMem32(uint32_t memoryIndex) const { + return moduleEnv_.memories[memoryIndex].indexType() == IndexType::I32; +} + +bool BaseCompiler::isMem64(uint32_t memoryIndex) const { + return moduleEnv_.memories[memoryIndex].indexType() == IndexType::I64; +} + +bool BaseCompiler::hugeMemoryEnabled(uint32_t memoryIndex) const { + return moduleEnv_.hugeMemoryEnabled(memoryIndex); +} + +uint32_t BaseCompiler::instanceOffsetOfMemoryBase(uint32_t memoryIndex) const { + if (memoryIndex == 0) { + return Instance::offsetOfMemory0Base(); + } + return Instance::offsetInData( + moduleEnv_.offsetOfMemoryInstanceData(memoryIndex) + + offsetof(MemoryInstanceData, base)); +} + +uint32_t BaseCompiler::instanceOffsetOfBoundsCheckLimit( + uint32_t memoryIndex) const { + if (memoryIndex == 0) { + return Instance::offsetOfMemory0BoundsCheckLimit(); + } + return Instance::offsetInData( + moduleEnv_.offsetOfMemoryInstanceData(memoryIndex) + + offsetof(MemoryInstanceData, boundsCheckLimit)); +} + +// The results parameter for BaseCompiler::emitCallArgs is used for +// regular Wasm calls. +struct NormalCallResults final { + const StackResultsLoc& results; + explicit NormalCallResults(const StackResultsLoc& results) + : results(results) {} + inline uint32_t onStackCount() const { return results.count(); } + inline StackResults stackResults() const { return results.stackResults(); } + inline void getStackResultArea(BaseStackFrame fr, RegPtr dest) const { + fr.computeOutgoingStackResultAreaPtr(results, dest); + } +}; + +// The results parameter for BaseCompiler::emitCallArgs is used for +// Wasm return/tail calls. +struct TailCallResults final { + bool hasStackResults; + explicit TailCallResults(const FuncType& funcType) { + hasStackResults = + ABIResultIter::HasStackResults(ResultType::Vector(funcType.results())); + } + inline uint32_t onStackCount() const { return 0; } + inline StackResults stackResults() const { + return hasStackResults ? StackResults::HasStackResults + : StackResults::NoStackResults; + } + inline void getStackResultArea(BaseStackFrame fr, RegPtr dest) const { + fr.loadIncomingStackResultAreaPtr(dest); + } +}; + +// The results parameter for BaseCompiler::emitCallArgs is used when +// no result (area) is expected. +struct NoCallResults final { + inline uint32_t onStackCount() const { return 0; } + inline StackResults stackResults() const { + return StackResults::NoStackResults; + } + inline void getStackResultArea(BaseStackFrame fr, RegPtr dest) const { + MOZ_CRASH(); + } +}; + +} // namespace wasm +} // namespace js + +#endif // wasm_wasm_baseline_object_inl_h |