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101 lines
2.7 KiB
C
101 lines
2.7 KiB
C
#ifndef _UPT_internal_h
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#define _UPT_internal_h
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/* 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 <errno.h>
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#include <libunwind.h>
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#include <limits.h>
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#include <stdio.h>
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#include <stdlib.h>
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#include <sys/ptrace.h>
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#include "internal.h"
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struct UPT_info
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{
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pid_t pid; /* the process-id of the child we're unwinding */
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void *image; /* mmap'ped image of the child's executable */
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size_t image_size; /* size of the image */
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unw_dyn_info_t di_cache;
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unw_word_t dyn_info_list_addr;
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unsigned int checked_dyn_info_list_addr : 1;
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#if UNW_TARGET_IA64
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unw_dyn_info_t ktab;
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#endif
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};
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struct map_iterator
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{
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FILE *fp;
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};
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HIDDEN int _UPT_reg_offset[UNW_REG_LAST];
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extern HIDDEN unw_dyn_info_t *_UPTi_find_unwind_table (struct UPT_info *ui,
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unw_addr_space_t as,
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char *path,
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unw_word_t segbase,
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unw_word_t mapoff);
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static inline void
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maps_init (struct map_iterator *mi, pid_t pid)
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{
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char path[PATH_MAX];
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snprintf (path, sizeof (path), "/proc/%d/maps", pid);
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mi->fp = fopen (path, "r");
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}
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static inline int
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maps_next (struct map_iterator *mi,
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unsigned long *low, unsigned long *high, unsigned long *offset,
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char *path)
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{
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char line[256+PATH_MAX];
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if (!mi->fp)
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return 0;
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while (fgets (line, sizeof (line), mi->fp))
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{
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if (sscanf (line, "%lx-%lx %*4c %lx %*x:%*x %*d %s\n",
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low, high, offset, path) == 4)
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return 1;
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}
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return 0;
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}
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static inline void
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maps_close (struct map_iterator *mi)
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{
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fclose (mi->fp);
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mi->fp = NULL;
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}
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#endif /* _UPT_internal_h */
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