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- /* libunwind - a platform-independent unwind library
- 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 "_UCD_lib.h"
- #include "_UCD_internal.h"
- /* Find the ELF image that contains IP and return the "closest"
- procedure name, if there is one. With some caching, this could be
- sped up greatly, but until an application materializes that's
- sensitive to the performance of this routine, why bother... */
- static int
- elf_w (CD_get_proc_name) (struct UCD_info *ui, unw_addr_space_t as, unw_word_t ip,
- char *buf, size_t buf_len, unw_word_t *offp)
- {
- unsigned long segbase, mapoff;
- int ret;
- /* Used to be tdep_get_elf_image() in ptrace unwinding code */
- coredump_phdr_t *cphdr = _UCD_get_elf_image(ui, ip);
- if (!cphdr)
- {
- Debug(1, "%s returns error: _UCD_get_elf_image failed\n", __func__);
- return -UNW_ENOINFO;
- }
- /* segbase: where it is mapped in virtual memory */
- /* mapoff: offset in the file */
- segbase = cphdr->p_vaddr;
- /*mapoff = phdr->p_offset; WRONG! phdr->p_offset is the offset in COREDUMP file */
- mapoff = 0;
- ret = elf_w (get_proc_name_in_image) (as, &ui->edi.ei, segbase, mapoff, ip, buf, buf_len, offp);
- return ret;
- }
- int
- _UCD_get_proc_name (unw_addr_space_t as, unw_word_t ip,
- char *buf, size_t buf_len, unw_word_t *offp, void *arg)
- {
- struct UCD_info *ui = arg;
- #if ELF_CLASS == ELFCLASS64
- return _Uelf64_CD_get_proc_name (ui, as, ip, buf, buf_len, offp);
- #elif ELF_CLASS == ELFCLASS32
- return _Uelf32_CD_get_proc_name (ui, as, ip, buf, buf_len, offp);
- #else
- return -UNW_ENOINFO;
- #endif
- }
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