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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/shared/Assembler-shared.cpp | |
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/shared/Assembler-shared.cpp')
-rw-r--r-- | js/src/jit/shared/Assembler-shared.cpp | 89 |
1 files changed, 89 insertions, 0 deletions
diff --git a/js/src/jit/shared/Assembler-shared.cpp b/js/src/jit/shared/Assembler-shared.cpp new file mode 100644 index 0000000000..bd842e0745 --- /dev/null +++ b/js/src/jit/shared/Assembler-shared.cpp @@ -0,0 +1,89 @@ +/* -*- 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/. */ + +#include "jit/shared/Assembler-shared.h" + +#include "jit/JitSpewer.h" +#include "vm/NativeObject.h" +#include "wasm/WasmMemory.h" + +namespace js { + +namespace wasm { + +#ifdef DEBUG +void MemoryAccessDesc::assertOffsetInGuardPages() const { + MOZ_ASSERT(offset64_ < (uint64_t)GetMaxOffsetGuardLimit(hugeMemory_)); +} +#endif + +} // namespace wasm + +namespace jit { + +void BaseObjectElementIndex::staticAssertions() { + NativeObject::elementsSizeMustNotOverflow(); +} + +void BaseObjectSlotIndex::staticAssertions() { + NativeObject::slotsSizeMustNotOverflow(); +} + +AssemblerShared::~AssemblerShared() { +#ifdef DEBUG + while (hasCreator()) { + popCreator(); + } +#endif +} + +#ifdef DEBUG +void AssemblerShared::pushCreator(const char* who) { + (void)creators_.append(who); + JitSpewStart(JitSpew_Codegen, "# BEGIN creators: "); + bool first = true; + for (const char* str : creators_) { + JitSpewCont(JitSpew_Codegen, "%s%s", first ? "" : "/", str); + first = false; + } + JitSpewCont(JitSpew_Codegen, "\n"); +} + +void AssemblerShared::popCreator() { + JitSpewStart(JitSpew_Codegen, "# END creators: "); + bool first = true; + for (const char* str : creators_) { + JitSpewCont(JitSpew_Codegen, "%s%s", first ? "" : "/", str); + first = false; + } + JitSpewCont(JitSpew_Codegen, "\n"); + if (creators_.empty()) { + JitSpew(JitSpew_Codegen, " "); + } + MOZ_ASSERT(!creators_.empty()); + creators_.popBack(); +} + +bool AssemblerShared::hasCreator() const { + // If you get failures of assertions of the form `MOZ_ASSERT(hasCreator())`, + // what this means is that a `MacroAssembler` (or, really, anything that + // inherits from `js::jit::AssemblerShared`) has emitted code or data from a + // place, in the SM C++ hierarchy, that is not nested within an + // `AutoCreatedBy` RAII scope. Consequently the emitted instructions/data + // won't have any owner that is identifiable in the `IONFLAGS=codegen` + // output. + // + // Fixing this is easy: work back up the crash stack and decide on a place + // to put an `AutoCreatedBy` call. A bit of grepping for `AutoCreatedBy` + // should make it obvious what to do. If in doubt, add `AutoCreatedBy` + // calls liberally; "extra" ones are harmless. + return !creators_.empty(); +} +#endif + +} // namespace jit + +} // namespace js |