1af19772e6
In https://github.com/llvm/llvm-project/pull/154902, the test failed with llvm-clang-win-x-aarch64(it is a cross-build, which builds on Windows and run on Linux, "Win to Aarch64 Linux Ubuntu Cross Toolchain"), and objdump is not available on Windows(the build env). Set to require x86 Linux instead.
61 lines
1.8 KiB
C++
61 lines
1.8 KiB
C++
// -*- C++ -*-
|
|
//===----------------------------------------------------------------------===//
|
|
//
|
|
// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
|
|
// See https://llvm.org/LICENSE.txt for license information.
|
|
// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
|
|
//
|
|
//===----------------------------------------------------------------------===//
|
|
|
|
// Manually marking the .eh_frame_hdr as DW_EH_PE_omit to make libunwind to do
|
|
// the linear search.
|
|
// Assuming the begining of the function is at the start of the FDE range.
|
|
|
|
// clang-format off
|
|
|
|
// REQUIRES: target={{x86_64-.+-linux-gnu}}
|
|
// aarch64,arm have a cross toolchain build(llvm-clang-win-x-aarch64, etc)
|
|
// where objdump is not available.
|
|
|
|
// TODO: Figure out why this fails with Memory Sanitizer.
|
|
// XFAIL: msan
|
|
|
|
// RUN: %{build}
|
|
// RUN: objcopy --dump-section .eh_frame_hdr=%t_ehf_hdr.bin %t.exe
|
|
// RUN: echo -ne '\xFF' | dd of=%t_ehf_hdr.bin bs=1 seek=2 count=2 conv=notrunc status=none
|
|
// RUN: objcopy --update-section .eh_frame_hdr=%t_ehf_hdr.bin %t.exe
|
|
// RUN: %{exec} %t.exe
|
|
|
|
// clang-format on
|
|
|
|
#include <assert.h>
|
|
#include <libunwind.h>
|
|
#include <stdint.h>
|
|
#include <stdio.h>
|
|
#include <unwind.h>
|
|
|
|
void f() {
|
|
printf("123\n");
|
|
void *pc = __builtin_return_address(0);
|
|
void *fpc = (void *)&f;
|
|
void *fpc1 = (void *)((uintptr_t)fpc + 1);
|
|
|
|
struct dwarf_eh_bases bases;
|
|
const void *fde_pc = _Unwind_Find_FDE(pc, &bases);
|
|
const void *fde_fpc = _Unwind_Find_FDE(fpc, &bases);
|
|
const void *fde_fpc1 = _Unwind_Find_FDE(fpc1, &bases);
|
|
printf("fde_pc = %p\n", fde_pc);
|
|
printf("fde_fpc = %p\n", fde_fpc);
|
|
printf("fde_fpc1 = %p\n", fde_fpc1);
|
|
fflush(stdout);
|
|
assert(fde_pc != NULL);
|
|
assert(fde_fpc != NULL);
|
|
assert(fde_fpc1 != NULL);
|
|
assert(fde_fpc == fde_fpc1);
|
|
}
|
|
|
|
int main() {
|
|
f();
|
|
return 0;
|
|
}
|