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106 lines
3.1 KiB
C
106 lines
3.1 KiB
C
/* libunwind - a platform-independent unwind library
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Copyright (C) 2001-2004 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 "tdep.h"
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#include "remote.h"
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static inline int
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intern_string (unw_addr_space_t as, unw_accessors_t *a,
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unw_word_t addr, char *buf, size_t buf_len, void *arg)
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{
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size_t i;
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int ret;
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for (i = 0; i < buf_len; ++i)
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{
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if ((ret = fetch8 (as, a, &addr, (int8_t *) buf + i, arg)) < 0)
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return ret;
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if (buf[i] == '\0')
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return 0; /* copied full string; return success */
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}
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buf[buf_len - 1] = '\0'; /* ensure string is NUL terminated */
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return -UNW_ENOMEM;
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}
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static inline int
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get_proc_name (unw_addr_space_t as, unw_word_t ip,
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char *buf, size_t buf_len, unw_word_t *offp, void *arg)
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{
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unw_accessors_t *a = unw_get_accessors (as);
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unw_proc_info_t pi;
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int ret;
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buf[0] = '\0'; /* always return a valid string, even if it's empty */
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ret = unwi_find_dynamic_proc_info (as, ip, &pi, 1, arg);
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if (ret == 0)
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{
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unw_dyn_info_t *di = pi.unwind_info;
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if (offp)
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*offp = ip - pi.start_ip;
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switch (di->format)
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{
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case UNW_INFO_FORMAT_DYNAMIC:
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ret = intern_string (as, a, di->u.pi.name_ptr, buf, buf_len, arg);
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break;
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case UNW_INFO_FORMAT_TABLE:
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case UNW_INFO_FORMAT_REMOTE_TABLE:
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/* XXX should we create a fake name, e.g.: "tablenameN",
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where N is the index of the function in the table??? */
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ret = -UNW_ENOINFO;
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break;
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default:
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ret = -UNW_EINVAL;
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break;
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}
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unwi_put_dynamic_unwind_info (as, &pi, arg);
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return ret;
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}
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if (ret != -UNW_ENOINFO)
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return ret;
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/* not a dynamic procedure, try to lookup static procedure name: */
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if (a->get_proc_name)
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return (*a->get_proc_name) (as, ip, buf, buf_len, offp, arg);
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return -UNW_ENOINFO;
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}
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PROTECTED int
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unw_get_proc_name (unw_cursor_t *cursor, char *buf, size_t buf_len,
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unw_word_t *offp)
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{
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struct cursor *c = (struct cursor *) cursor;
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return get_proc_name (tdep_get_as (c), tdep_get_ip (c), buf, buf_len, offp,
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tdep_get_as_arg (c));
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}
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