| /* 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, "returns error: _UCD_get_elf_image failed\n"); |
| 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 |
| } |