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/* -*- 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
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