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author | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-19 00:47:55 +0000 |
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committer | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-19 00:47:55 +0000 |
commit | 26a029d407be480d791972afb5975cf62c9360a6 (patch) | |
tree | f435a8308119effd964b339f76abb83a57c29483 /js/src/jit/ABIArgGenerator.h | |
parent | Initial commit. (diff) | |
download | firefox-26a029d407be480d791972afb5975cf62c9360a6.tar.xz firefox-26a029d407be480d791972afb5975cf62c9360a6.zip |
Adding upstream version 124.0.1.upstream/124.0.1
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'js/src/jit/ABIArgGenerator.h')
-rw-r--r-- | js/src/jit/ABIArgGenerator.h | 109 |
1 files changed, 109 insertions, 0 deletions
diff --git a/js/src/jit/ABIArgGenerator.h b/js/src/jit/ABIArgGenerator.h new file mode 100644 index 0000000000..bd6193782c --- /dev/null +++ b/js/src/jit/ABIArgGenerator.h @@ -0,0 +1,109 @@ +/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- + * vim: set ts=8 sts=2 et sw=2 tw=80: + * This Source Code Form is subject to the terms of the Mozilla Public + * License, v. 2.0. If a copy of the MPL was not distributed with this + * file, You can obtain one at http://mozilla.org/MPL/2.0/. */ + +#ifndef jit_ABIArgGenerator_h +#define jit_ABIArgGenerator_h + +#include "mozilla/Assertions.h" + +#include <stdint.h> + +#include "jit/Assembler.h" +#include "jit/IonTypes.h" +#include "jit/RegisterSets.h" +#include "wasm/WasmFrame.h" + +namespace js::jit { + +static inline MIRType ToMIRType(MIRType t) { return t; } + +static inline MIRType ToMIRType(ABIType argType) { + switch (argType) { + case ABIType::General: + return MIRType::Pointer; + case ABIType::Float64: + return MIRType::Double; + case ABIType::Float32: + return MIRType::Float32; + case ABIType::Int32: + return MIRType::Int32; + case ABIType::Int64: + return MIRType::Int64; + default: + break; + } + MOZ_CRASH("unexpected argType"); +} + +template <class VecT, class ABIArgGeneratorT> +class ABIArgIterBase { + ABIArgGeneratorT gen_; + const VecT& types_; + unsigned i_; + + void settle() { + if (!done()) gen_.next(ToMIRType(types_[i_])); + } + + public: + explicit ABIArgIterBase(const VecT& types) : types_(types), i_(0) { + settle(); + } + void operator++(int) { + MOZ_ASSERT(!done()); + i_++; + settle(); + } + bool done() const { return i_ == types_.length(); } + + ABIArg* operator->() { + MOZ_ASSERT(!done()); + return &gen_.current(); + } + ABIArg& operator*() { + MOZ_ASSERT(!done()); + return gen_.current(); + } + + unsigned index() const { + MOZ_ASSERT(!done()); + return i_; + } + MIRType mirType() const { + MOZ_ASSERT(!done()); + return ToMIRType(types_[i_]); + } + uint32_t stackBytesConsumedSoFar() const { + return gen_.stackBytesConsumedSoFar(); + } +}; + +// This is not an alias because we want to allow class template argument +// deduction. +template <class VecT> +class ABIArgIter : public ABIArgIterBase<VecT, ABIArgGenerator> { + public: + explicit ABIArgIter(const VecT& types) + : ABIArgIterBase<VecT, ABIArgGenerator>(types) {} +}; + +class WasmABIArgGenerator : public ABIArgGenerator { + public: + WasmABIArgGenerator() { + increaseStackOffset(wasm::FrameWithInstances::sizeOfInstanceFields()); + } +}; + +template <class VecT> +class WasmABIArgIter : public ABIArgIterBase<VecT, WasmABIArgGenerator> { + public: + explicit WasmABIArgIter(const VecT& types) + : ABIArgIterBase<VecT, WasmABIArgGenerator>(types) {} +}; + +} // namespace js::jit + +#endif /* jit_ABIArgGenerator_h */ |