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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.
*/
#ifndef asmjs_wasm_baseline_compile_h
#define asmjs_wasm_baseline_compile_h
#include "jit/ABIArgGenerator.h"
#include "wasm/WasmGenerator.h"
namespace js {
namespace wasm {
// Return whether BaselineCompileFunction can generate code on the current
// device. Usually you do *not* want to call this, you want
// BaselineAvailable().
[[nodiscard]] bool BaselinePlatformSupport();
// Generate adequate code quickly.
[[nodiscard]] bool BaselineCompileFunctions(
const ModuleEnvironment& moduleEnv, const CompilerEnvironment& compilerEnv,
LifoAlloc& lifo, const FuncCompileInputVector& inputs, CompiledCode* code,
UniqueChars* error);
// BaseLocalIter iterates over a vector of types of locals and provides offsets
// from the Frame address for those locals, and associated data.
//
// The implementation of BaseLocalIter is the property of the BaseStackFrame.
// But it is also exposed for eg the debugger to use.
class BaseLocalIter {
private:
using ConstValTypeRange = mozilla::Range<const ValType>;
const ValTypeVector& locals_;
const ArgTypeVector& args_;
jit::WasmABIArgIter<ArgTypeVector> argsIter_;
size_t index_;
int32_t frameSize_;
int32_t nextFrameSize_;
int32_t frameOffset_;
int32_t stackResultPointerOffset_;
jit::MIRType mirType_;
bool done_;
void settle();
int32_t pushLocal(size_t nbytes);
public:
BaseLocalIter(const ValTypeVector& locals, const ArgTypeVector& args,
bool debugEnabled);
void operator++(int);
bool done() const { return done_; }
jit::MIRType mirType() const {
MOZ_ASSERT(!done_);
return mirType_;
}
int32_t frameOffset() const {
MOZ_ASSERT(!done_);
MOZ_ASSERT(frameOffset_ != INT32_MAX);
return frameOffset_;
}
size_t index() const {
MOZ_ASSERT(!done_);
return index_;
}
// The size in bytes taken up by the previous `index_` locals, also including
// fixed allocations like the DebugFrame and "hidden" locals like a spilled
// stack results pointer.
int32_t frameSize() const { return frameSize_; }
int32_t stackResultPointerOffset() const {
MOZ_ASSERT(args_.hasSyntheticStackResultPointerArg());
MOZ_ASSERT(stackResultPointerOffset_ != INT32_MAX);
return stackResultPointerOffset_;
}
#ifdef DEBUG
bool isArg() const {
MOZ_ASSERT(!done_);
return !argsIter_.done();
}
#endif
};
} // namespace wasm
} // namespace js
#endif // asmjs_wasm_baseline_compile_h
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