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72 lines
2.1 KiB
C
72 lines
2.1 KiB
C
/* libunwind - a platform-independent unwind library
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Copyright (C) 2003 Hewlett-Packard Co
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Contributed by David Mosberger-Tang <davidm@hpl.hp.com>
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This file is part of libunwind.
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Permission is hereby granted, free of charge, to any person obtaining
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a copy of this software and associated documentation files (the
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"Software"), to deal in the Software without restriction, including
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without limitation the rights to use, copy, modify, merge, publish,
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distribute, sublicense, and/or sell copies of the Software, and to
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permit persons to whom the Software is furnished to do so, subject to
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the following conditions:
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The above copyright notice and this permission notice shall be
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included in all copies or substantial portions of the Software.
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THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
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EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
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MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
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NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
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LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
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OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
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WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. */
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#include <elf.h>
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#include <fcntl.h>
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#include <unistd.h>
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#include <sys/mman.h>
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#include "internal.h"
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#if ELF_CLASS == ELFCLASS32
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# define ELFW(x) ELF32_##x
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# define ElfW(x) Elf32_##x
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# define elfW(x) _Uelf32_##x
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#else
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# define ELFW(x) ELF64_##x
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# define ElfW(x) Elf64_##x
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# define elfW(x) _Uelf64_##x
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#endif
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static inline int
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elf_map_image (struct elf_image *ei, char *path)
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{
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struct stat stat;
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int fd;
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fd = open (path, O_RDONLY);
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if (fd < 0)
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return -1;
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if (fstat (fd, &stat) < 0)
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{
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close (fd);
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return -1;
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}
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ei->size = stat.st_size;
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ei->image = mmap (NULL, ei->size, PROT_READ, MAP_PRIVATE, fd, 0);
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close (fd);
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if (ei->image == MAP_FAILED)
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return -1;
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return 0;
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}
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extern HIDDEN int elfW (valid_object) (struct elf_image *ei);
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extern HIDDEN int elfW (get_proc_name) (pid_t pid, unw_word_t ip,
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char *buf, size_t len,
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unw_word_t *offp);
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