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authorDaniel Baumann <daniel.baumann@progress-linux.org>2024-04-19 00:47:55 +0000
committerDaniel Baumann <daniel.baumann@progress-linux.org>2024-04-19 00:47:55 +0000
commit26a029d407be480d791972afb5975cf62c9360a6 (patch)
treef435a8308119effd964b339f76abb83a57c29483 /js/src/jit/ABIArgGenerator.h
parentInitial commit. (diff)
downloadfirefox-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.h109
1 files changed, 109 insertions, 0 deletions
diff --git a/js/src/jit/ABIArgGenerator.h b/js/src/jit/ABIArgGenerator.h
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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:
+ * 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 */