| /* libunwind - a platform-independent unwind library |
| Copyright (C) 2001-2005 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 "libunwind_i.h" |
| #include "remote.h" |
| |
| static inline int |
| intern_string (unw_addr_space_t as, unw_accessors_t *a, |
| unw_word_t addr, char *buf, size_t buf_len, void *arg) |
| { |
| size_t i; |
| int ret; |
| |
| for (i = 0; i < buf_len; ++i) |
| { |
| if ((ret = fetch8 (as, a, &addr, (int8_t *) buf + i, arg)) < 0) |
| return ret; |
| |
| if (buf[i] == '\0') |
| return 0; /* copied full string; return success */ |
| } |
| buf[buf_len - 1] = '\0'; /* ensure string is NUL terminated */ |
| return -UNW_ENOMEM; |
| } |
| |
| static inline int |
| get_proc_name (unw_addr_space_t as, unw_word_t ip, |
| char *buf, size_t buf_len, unw_word_t *offp, void *arg) |
| { |
| unw_accessors_t *a = unw_get_accessors (as); |
| unw_proc_info_t pi; |
| int ret; |
| |
| buf[0] = '\0'; /* always return a valid string, even if it's empty */ |
| |
| ret = unwi_find_dynamic_proc_info (as, ip, &pi, 1, arg); |
| if (ret == 0) |
| { |
| unw_dyn_info_t *di = pi.unwind_info; |
| |
| if (offp) |
| *offp = ip - pi.start_ip; |
| |
| switch (di->format) |
| { |
| case UNW_INFO_FORMAT_DYNAMIC: |
| ret = intern_string (as, a, di->u.pi.name_ptr, buf, buf_len, arg); |
| break; |
| |
| case UNW_INFO_FORMAT_TABLE: |
| case UNW_INFO_FORMAT_REMOTE_TABLE: |
| /* XXX should we create a fake name, e.g.: "tablenameN", |
| where N is the index of the function in the table??? */ |
| ret = -UNW_ENOINFO; |
| break; |
| |
| default: |
| ret = -UNW_EINVAL; |
| break; |
| } |
| unwi_put_dynamic_unwind_info (as, &pi, arg); |
| return ret; |
| } |
| |
| if (ret != -UNW_ENOINFO) |
| return ret; |
| |
| /* not a dynamic procedure, try to lookup static procedure name: */ |
| |
| if (a->get_proc_name) |
| return (*a->get_proc_name) (as, ip, buf, buf_len, offp, arg); |
| |
| return -UNW_ENOINFO; |
| } |
| |
| PROTECTED int |
| unw_get_proc_name (unw_cursor_t *cursor, char *buf, size_t buf_len, |
| unw_word_t *offp) |
| { |
| struct cursor *c = (struct cursor *) cursor; |
| |
| return get_proc_name (tdep_get_as (c), tdep_get_ip (c), buf, buf_len, offp, |
| tdep_get_as_arg (c)); |
| } |
| |
| /* ANDROID support update. */ |
| PROTECTED int |
| unw_get_proc_name_by_ip (unw_addr_space_t as, unw_word_t ip, char *buf, |
| size_t buf_len, unw_word_t *offp, void *as_arg) |
| { |
| return get_proc_name (as, ip, buf, buf_len, offp, as_arg); |
| } |
| /* End of ANDROID update. */ |