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82af008d98
When enabling 32-bit testing on Linux/i386 and Linux/sparc, many tests `FAIL`: - All Linux/i386 tests `FAIL` with ``` safestack CHECK failed: /vol/llvm/src/llvm-project/local/compiler-rt/lib/safestack/safestack.cpp:95 MAP_FAILED != addr ``` because the safestack `mmap` implementation doesn't work there. This patch adjusts it to match the `sanitizer_linux.cpp.c` one. - On 32-bit Linux/sparc, the `pthread*.c` tests `FAIL` because a `tid_t` (`uint64_t`) `tid` arg was passed to `syscall(SYS_tgkill)` while `tid` is actually a `pid_t` (`int`). Fixed by adding a cast. Tested on `x86_64-pc-linux-gnu` (32 and 64-bit) and `sparc64-unknown-linux-gnu` (32 and 64-bit).
54 lines
1.7 KiB
C++
54 lines
1.7 KiB
C++
//===-- safestack_util.h --------------------------------------------------===//
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//
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// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
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// See https://llvm.org/LICENSE.txt for license information.
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// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
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//
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//===----------------------------------------------------------------------===//
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//
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// This file contains utility code for SafeStack implementation.
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//
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//===----------------------------------------------------------------------===//
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#ifndef SAFESTACK_UTIL_H
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#define SAFESTACK_UTIL_H
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#include <pthread.h>
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#include <stdio.h>
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#include <stdlib.h>
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namespace safestack {
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#define SFS_CHECK(a) \
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do { \
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if (!(a)) { \
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fprintf(stderr, "safestack CHECK failed: %s:%d %s\n", __FILE__, \
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__LINE__, #a); \
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abort(); \
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}; \
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} while (false)
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inline size_t RoundUpTo(size_t size, size_t boundary) {
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SFS_CHECK((boundary & (boundary - 1)) == 0);
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return (size + boundary - 1) & ~(boundary - 1);
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}
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inline constexpr bool IsAligned(size_t a, size_t alignment) {
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return (a & (alignment - 1)) == 0;
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}
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class MutexLock {
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public:
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explicit MutexLock(pthread_mutex_t &mutex) : mutex_(&mutex) {
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pthread_mutex_lock(mutex_);
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}
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~MutexLock() { pthread_mutex_unlock(mutex_); }
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private:
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pthread_mutex_t *mutex_ = nullptr;
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};
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} // namespace safestack
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#endif // SAFESTACK_UTIL_H
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