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95 lines
2.8 KiB
C
95 lines
2.8 KiB
C
/* libunwind - a platform-independent unwind library
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Copyright (C) 2003 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 "_UPT_internal.h"
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#ifdef UNW_TARGET_IA64
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# include "elf64.h"
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# include "os-linux.h"
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#endif
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int
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_UPT_get_dyn_info_list_addr (unw_addr_space_t as, unw_word_t *dil_addr,
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void *arg)
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{
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#if UNW_TARGET_IA64
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unsigned long lo, hi, off;
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struct UPT_info *ui = arg;
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struct map_iterator mi;
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char path[PATH_MAX];
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unw_dyn_info_t *di;
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unw_word_t res;
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#endif
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int count = 0;
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debug (100, "%s: looking for dyn_info list\n", __FUNCTION__);
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#if UNW_TARGET_IA64
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maps_init (&mi, ui->pid);
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while (maps_next (&mi, &lo, &hi, &off, path))
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{
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if (off)
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continue;
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if (ui->ei.image)
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{
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munmap (ui->ei.image, ui->ei.size);
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/* invalidate the cache: */
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ui->di_cache.start_ip = ui->di_cache.end_ip = 0;
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}
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if (elf_map_image (&ui->ei, path) < 0)
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return -UNW_ENOINFO;
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debug (100, "%s: checking object %s\n", __FUNCTION__, path);
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di = _UPTi_find_unwind_table (ui, as, path, lo, off);
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if (di)
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{
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res = _Uia64_find_dyn_list (as, di, arg);
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if (res && count++ == 0)
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{
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debug (100, "%s: dyn_info_list_addr = 0x%lx\n",
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__FUNCTION__, (long) res);
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*dil_addr = res;
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}
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}
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}
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maps_close (&mi);
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#else
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# warning Implement me, please.
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#endif
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/* If multiple dynamic-info list addresses are found, we would have
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to determine which was is the one actually in use (since the
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dynamic name resolution algorithm will pick one "winner").
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Perhaps we'd have to track them all until we find one that's
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non-empty. Hopefully, this case simply will never arise, since
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only libunwind defines the dynamic info list head. */
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assert (count <= 1);
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return (count > 0) ? 0 : -UNW_ENOINFO;
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}
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