mirror of
https://github.com/tobast/libunwind-eh_elf.git
synced 2024-11-29 10:17:38 +01:00
ffc474b8c8
Handles lookup, extracting unwind entries, and decoding the entry using a callback mechanism. Signed-off-by: Ken Werner <ken.werner@linaro.org>
81 lines
2.3 KiB
C
81 lines
2.3 KiB
C
/* libunwind - a platform-independent unwind library
|
|
Copyright (C) 2003, 2005 Hewlett-Packard Co
|
|
Copyright (C) 2007 David Mosberger-Tang
|
|
Contributed by David Mosberger-Tang <dmosberger@gmail.com>
|
|
|
|
This file is part of libunwind.
|
|
|
|
Permission is hereby granted, free of charge, to any person obtaining
|
|
a copy of this software and associated documentation files (the
|
|
"Software"), to deal in the Software without restriction, including
|
|
without limitation the rights to use, copy, modify, merge, publish,
|
|
distribute, sublicense, and/or sell copies of the Software, and to
|
|
permit persons to whom the Software is furnished to do so, subject to
|
|
the following conditions:
|
|
|
|
The above copyright notice and this permission notice shall be
|
|
included in all copies or substantial portions of the Software.
|
|
|
|
THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
|
|
EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
|
|
MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
|
|
NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
|
|
LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
|
|
OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
|
|
WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. */
|
|
|
|
#include <elf.h>
|
|
#include <fcntl.h>
|
|
#include <unistd.h>
|
|
|
|
#include <sys/mman.h>
|
|
#include <sys/stat.h>
|
|
|
|
#if ELF_CLASS == ELFCLASS32
|
|
# define ELF_W(x) ELF32_##x
|
|
# define Elf_W(x) Elf32_##x
|
|
# define elf_w(x) _Uelf32_##x
|
|
#else
|
|
# define ELF_W(x) ELF64_##x
|
|
# define Elf_W(x) Elf64_##x
|
|
# define elf_w(x) _Uelf64_##x
|
|
#endif
|
|
|
|
#include "libunwind_i.h"
|
|
|
|
extern int elf_w (valid_object) (struct elf_image *ei);
|
|
extern int elf_w (get_proc_name) (unw_addr_space_t as,
|
|
pid_t pid, unw_word_t ip,
|
|
char *buf, size_t len,
|
|
unw_word_t *offp);
|
|
|
|
static inline int
|
|
elf_map_image (struct elf_image *ei, const char *path)
|
|
{
|
|
struct stat stat;
|
|
int fd;
|
|
|
|
fd = open (path, O_RDONLY);
|
|
if (fd < 0)
|
|
return -1;
|
|
|
|
if (fstat (fd, &stat) < 0)
|
|
{
|
|
close (fd);
|
|
return -1;
|
|
}
|
|
|
|
ei->size = stat.st_size;
|
|
ei->image = mmap (NULL, ei->size, PROT_READ, MAP_PRIVATE, fd, 0);
|
|
close (fd);
|
|
if (ei->image == MAP_FAILED)
|
|
return -1;
|
|
|
|
if (!elf_w (valid_object) (ei))
|
|
{
|
|
munmap(ei->image, ei->size);
|
|
return -1;
|
|
}
|
|
|
|
return 0;
|
|
}
|