diff options
Diffstat (limited to 'src/third_party/unwind/dist/src/os-linux.c')
-rw-r--r-- | src/third_party/unwind/dist/src/os-linux.c | 73 |
1 files changed, 73 insertions, 0 deletions
diff --git a/src/third_party/unwind/dist/src/os-linux.c b/src/third_party/unwind/dist/src/os-linux.c new file mode 100644 index 00000000000..8a00669fb3c --- /dev/null +++ b/src/third_party/unwind/dist/src/os-linux.c @@ -0,0 +1,73 @@ +/* libunwind - a platform-independent unwind library + Copyright (C) 2003-2005 Hewlett-Packard Co + Contributed by David Mosberger-Tang <davidm@hpl.hp.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 <limits.h> +#include <stdio.h> + +#include "libunwind_i.h" +#include "os-linux.h" + +int +tdep_get_elf_image (struct elf_image *ei, pid_t pid, unw_word_t ip, + unsigned long *segbase, unsigned long *mapoff, + char *path, size_t pathlen) +{ + struct map_iterator mi; + int found = 0, rc; + unsigned long hi; + + if (maps_init (&mi, pid) < 0) + return -1; + + while (maps_next (&mi, segbase, &hi, mapoff)) + if (ip >= *segbase && ip < hi) + { + found = 1; + break; + } + + if (!found) + { + maps_close (&mi); + return -1; + } + if (path) + { + strncpy(path, mi.path, pathlen); + } + rc = elf_map_image (ei, mi.path); + maps_close (&mi); + return rc; +} + +#ifndef UNW_REMOTE_ONLY + +void +tdep_get_exe_image_path (char *path) +{ + strcpy(path, "/proc/self/exe"); +} + +#endif /* !UNW_REMOTE_ONLY */ |