v8/test/common/assembler-tester.h

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Reland "[turboassembler] Introduce hard-abort mode" This is a reland of a462a7854a081f4f34bb4c112ee33f3d69efa309 Original change's description: > [turboassembler] Introduce hard-abort mode > > For checks and assertions (mostly for debug code, like stack alignment > or zero extension), we had two modes: Emit a call to the {Abort} > runtime function (the default), and emit a debug break (used for > testing, enabled via --trap-on-abort). > In wasm, where we cannot just call a runtime function because code must > be isolate independent, we always used the trap-on-abort behaviour. > This causes problems for our fuzzers, which do not catch SIGTRAP, and > hence do not detect debug code failures. > > This CL introduces a third mode ("hard abort"), which calls a C > function via {ExternalReference}. The C function still outputs the > abort reason, but does not print the stack trace. It then aborts via > "OS::Abort", just like the runtime function. > This will allow fuzzers to detect the crash and even find a nice error > message. > > Even though this looks like a lot of code churn, it is actually not. > Most added lines are new tests, and other changes are minimal. > > R=mstarzinger@chromium.org > > Bug: chromium:863799 > Change-Id: I77c58ff72db552d49014614436259ccfb49ba87b > Reviewed-on: https://chromium-review.googlesource.com/1142163 > Commit-Queue: Clemens Hammacher <clemensh@chromium.org> > Reviewed-by: Michael Starzinger <mstarzinger@chromium.org> > Cr-Commit-Position: refs/heads/master@{#54592} Bug: chromium:863799 Change-Id: I7729a47b4823a982a8e201df36520aa2b6ef5326 Reviewed-on: https://chromium-review.googlesource.com/1146100 Reviewed-by: Michael Starzinger <mstarzinger@chromium.org> Commit-Queue: Clemens Hammacher <clemensh@chromium.org> Cr-Commit-Position: refs/heads/master@{#54656}
2018-07-24 14:12:47 +00:00
// Copyright 2018 the V8 project authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#ifndef V8_TEST_COMMON_ASSEMBLER_TESTER_H_
#define V8_TEST_COMMON_ASSEMBLER_TESTER_H_
#include "src/assembler.h"
namespace v8 {
namespace internal {
static inline uint8_t* AllocateAssemblerBuffer(
size_t* allocated,
size_t requested = v8::internal::AssemblerBase::kMinimalBufferSize) {
size_t page_size = v8::internal::AllocatePageSize();
size_t alloc_size = RoundUp(requested, page_size);
void* result = v8::internal::AllocatePages(
nullptr, alloc_size, page_size, v8::PageAllocator::kReadWriteExecute);
CHECK(result);
*allocated = alloc_size;
return static_cast<uint8_t*>(result);
}
static inline void MakeAssemblerBufferExecutable(uint8_t* buffer,
size_t allocated) {
bool result = v8::internal::SetPermissions(buffer, allocated,
v8::PageAllocator::kReadExecute);
CHECK(result);
}
static inline void MakeAssemblerBufferWritable(uint8_t* buffer,
size_t allocated) {
bool result = v8::internal::SetPermissions(buffer, allocated,
v8::PageAllocator::kReadWrite);
CHECK(result);
}
} // namespace internal
} // namespace v8
#endif // V8_TEST_COMMON_ASSEMBLER_TESTER_H_