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https://github.com/tobast/libunwind-eh_elf.git
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Rename: src/dyn-remote.c -> src/Gdyn-remote.c
}(Logical change 1.140)
This commit is contained in:
hp.com!davidm
parent
1cfcd061e9
commit
ff78bcde0d
1 changed files with 0 additions and 299 deletions
299
src/dyn-remote.c
299
src/dyn-remote.c
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/* libunwind - a platform-independent unwind library
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Copyright (C) 2001-2002 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 <stdlib.h>
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#include "internal.h"
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#include "tdep.h"
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static void
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free_regions (unw_dyn_region_info_t *region)
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{
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if (region->next)
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free_regions (region->next);
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free (region);
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}
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static int
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intern_op (unw_addr_space_t as, unw_accessors_t *a, unw_word_t *addr,
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unw_dyn_op_t *op, void *arg)
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{
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int ret;
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if ((ret = fetch8 (as, a, addr, &op->tag, arg)) < 0
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|| (ret = fetch8 (as, a, addr, &op->qp, arg)) < 0
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|| (ret = fetch16 (as, a, addr, &op->reg, arg)) < 0
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|| (ret = fetch32 (as, a, addr, &op->when, arg)) < 0
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|| (ret = fetchw (as, a, addr, &op->val, arg)) < 0)
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return ret;
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return 0;
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}
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static int
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intern_regions (unw_addr_space_t as, unw_accessors_t *a,
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unw_word_t *addr, unw_dyn_region_info_t **regionp, void *arg)
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{
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uint32_t insn_count, op_count, i;
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unw_dyn_region_info_t *region;
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unw_word_t next_addr;
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int ret;
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*regionp = NULL;
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if (!*addr)
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return 0; /* NULL region-list */
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if ((ret = fetchw (as, a, addr, &next_addr, arg)) < 0
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|| (ret = fetch32 (as, a, addr, (int32_t *) &insn_count, arg)) < 0
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|| (ret = fetch32 (as, a, addr, (int32_t *) &op_count, arg)) < 0)
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return ret;
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region = calloc (1, _U_dyn_region_info_size (op_count));
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if (!region)
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{
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ret = -UNW_ENOMEM;
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goto out;
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}
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region->insn_count = insn_count;
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region->op_count = op_count;
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for (i = 0; i < op_count; ++i)
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if ((ret = intern_op (as, a, addr, region->op + i, arg)) < 0)
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goto out;
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if (next_addr)
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if ((ret = intern_regions (as, a, &next_addr, ®ion->next, arg)) < 0)
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goto out;
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*regionp = region;
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return 0;
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out:
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if (region)
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free_regions (region);
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return ret;
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}
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static int
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intern_array (unw_addr_space_t as, unw_accessors_t *a,
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unw_word_t *addr, unw_word_t table_len, unw_word_t **table_data,
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void *arg)
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{
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unw_word_t i, *data = calloc (table_len, WSIZE);
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int ret = 0;
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if (!data)
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{
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ret = -UNW_ENOMEM;
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goto out;
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}
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for (i = 0; i < table_len; ++i)
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if (fetchw (as, a, addr, data + i, arg) < 0)
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goto out;
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*table_data = data;
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return 0;
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out:
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if (data)
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free (data);
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return ret;
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}
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static void
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free_dyn_info (unw_dyn_info_t *di)
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{
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switch (di->format)
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{
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case UNW_INFO_FORMAT_DYNAMIC:
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if (di->u.pi.regions)
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{
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free_regions (di->u.pi.regions);
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di->u.pi.regions = NULL;
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}
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break;
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case UNW_INFO_FORMAT_TABLE:
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if (di->u.ti.table_data)
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{
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free (di->u.ti.table_data);
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di->u.ti.table_data = NULL;
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}
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break;
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case UNW_INFO_FORMAT_REMOTE_TABLE:
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default:
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break;
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}
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}
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static int
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intern_dyn_info (unw_addr_space_t as, unw_accessors_t *a,
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unw_word_t *addr, unw_dyn_info_t *di, void *arg)
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{
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unw_word_t first_region;
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int ret;
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switch (di->format)
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{
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case UNW_INFO_FORMAT_DYNAMIC:
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if ((ret = fetchw (as, a, addr, &di->u.pi.name_ptr, arg)) < 0
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|| (ret = fetchw (as, a, addr, &di->u.pi.handler, arg)) < 0
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|| (ret = fetch32 (as, a, addr,
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(int32_t *) &di->u.pi.flags, arg)) < 0)
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goto out;
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*addr += 4; /* skip over pad0 */
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if ((ret = fetchw (as, a, addr, &first_region, arg)) < 0
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|| (ret = intern_regions (as, a, &first_region, &di->u.pi.regions,
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arg)) < 0)
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goto out;
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break;
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case UNW_INFO_FORMAT_TABLE:
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if ((ret = fetchw (as, a, addr, &di->u.ti.name_ptr, arg)) < 0
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|| (ret = fetchw (as, a, addr, &di->u.ti.segbase, arg)) < 0
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|| (ret = fetchw (as, a, addr, &di->u.ti.table_len, arg)) < 0
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|| (ret = intern_array (as, a, addr, di->u.ti.table_len,
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&di->u.ti.table_data, arg)) < 0)
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goto out;
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break;
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case UNW_INFO_FORMAT_REMOTE_TABLE:
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if ((ret = fetchw (as, a, addr, &di->u.rti.name_ptr, arg)) < 0
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|| (ret = fetchw (as, a, addr, &di->u.rti.segbase, arg)) < 0
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|| (ret = fetchw (as, a, addr, &di->u.rti.table_len, arg)) < 0
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|| (ret = fetchw (as, a, addr, &di->u.rti.table_data, arg)) < 0)
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goto out;
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break;
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default:
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ret = -UNW_ENOINFO;
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goto out;
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}
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return 0;
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out:
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free_dyn_info (di);
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return ret;
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}
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HIDDEN int
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unwi_dyn_remote_find_proc_info (unw_addr_space_t as, unw_word_t ip,
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unw_proc_info_t *pi, unw_word_t *genp,
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int need_unwind_info, void *arg)
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{
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unw_accessors_t *a = unw_get_accessors (as);
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unw_word_t dyn_list_addr, addr, next_addr, gen1, gen2, start_ip, end_ip;
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unw_dyn_info_t *di = NULL;
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int ret;
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if (as->dyn_info_list_addr)
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dyn_list_addr = as->dyn_info_list_addr;
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else
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{
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if ((*a->get_dyn_info_list_addr) (as, &dyn_list_addr, arg) < 0)
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return -UNW_ENOINFO;
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if (as->caching_policy != UNW_CACHE_NONE)
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as->dyn_info_list_addr = dyn_list_addr;
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}
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do
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{
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addr = dyn_list_addr;
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ret = -UNW_ENOINFO;
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if (fetchw (as, a, &addr, &gen1, arg) < 0
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|| fetchw (as, a, &addr, &next_addr, arg) < 0)
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return ret;
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for (addr = next_addr; addr != 0; addr = next_addr)
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{
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if (fetchw (as, a, &addr, &next_addr, arg) < 0)
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goto recheck; /* only fail if generation # didn't change */
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addr += WSIZE; /* skip over prev_addr */
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if (fetchw (as, a, &addr, &start_ip, arg) < 0
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|| fetchw (as, a, &addr, &end_ip, arg) < 0)
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goto recheck; /* only fail if generation # didn't change */
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if (ip >= start_ip && ip < end_ip)
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{
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if (!di)
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di = calloc (1, sizeof (*di));
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di->start_ip = start_ip;
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di->end_ip = end_ip;
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if (fetchw (as, a, &addr, &di->gp, arg) < 0
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|| fetch32 (as, a, &addr, &di->format, arg) < 0)
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goto recheck; /* only fail if generation # didn't change */
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addr += 4; /* skip over padding */
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if (need_unwind_info
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&& intern_dyn_info (as, a, &addr, di, arg) < 0)
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goto recheck; /* only fail if generation # didn't change */
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if (unwi_extract_dynamic_proc_info (as, ip, pi, di,
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need_unwind_info, arg) < 0)
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{
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free_dyn_info (di);
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goto recheck; /* only fail if generation # didn't change */
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}
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ret = 0; /* OK, found it */
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break;
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}
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}
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/* Re-check generation number to ensure the data we have is
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consistent. */
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recheck:
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addr = dyn_list_addr;
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if (fetchw (as, a, &addr, &gen2, arg) < 0)
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return ret;
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}
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while (gen1 != gen2);
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*genp = gen1;
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if (ret < 0 && di)
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free (di);
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return ret;
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}
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HIDDEN void
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unwi_dyn_remote_put_unwind_info (unw_addr_space_t as, unw_proc_info_t *pi,
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void *arg)
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{
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if (!pi->unwind_info)
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return;
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free_dyn_info (pi->unwind_info);
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free (pi->unwind_info);
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pi->unwind_info = NULL;
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}
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