104 lines
2.7 KiB
C++
104 lines
2.7 KiB
C++
/* parse_pe.cc
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Written by Egor Duda <deo@logos-m.ru>
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This file is part of Cygwin.
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This program is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 3 of the License, or
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(at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License (file COPYING.dumper) for more details.
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You should have received a copy of the GNU General Public License
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along with this program; if not, write to the Free Software
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Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston, MA 02110-1301, USA. */
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#define PACKAGE
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#include <bfd.h>
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#include <stdio.h>
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#include <stdlib.h>
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#include "dumper.h"
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int
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exclusion::add (LPBYTE mem_base, SIZE_T mem_size)
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{
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while (last >= size)
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size += step;
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region = (process_mem_region *) realloc (region, size * sizeof (process_mem_region));
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if (region == NULL)
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return 0;
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region[last].base = mem_base;
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region[last].size = mem_size;
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last++;
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return 1;
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};
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int
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cmp_regions (const void *r1, const void *r2)
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{
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if (((process_mem_region *) r1)->base < ((process_mem_region *) r2)->base)
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return -1;
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if (((process_mem_region *) r1)->base > ((process_mem_region *) r2)->base)
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return 1;
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return 0;
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}
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int
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exclusion::sort_and_check ()
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{
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qsort (region, last, sizeof (process_mem_region), &cmp_regions);
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for (process_mem_region * p = region; p < region + last - 1; p++)
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{
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process_mem_region *q = p + 1;
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if (q == p + 1)
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continue;
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if (p->base + size > q->base)
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{
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fprintf (stderr, "region error @ (%p + %zd) > %p\n", p->base, size, q->base);
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return 0;
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}
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}
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return 1;
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}
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static void
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select_data_section (bfd * abfd, asection * sect, PTR obj)
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{
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exclusion *excl_list = (exclusion *) obj;
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if ((sect->flags & (SEC_CODE | SEC_DEBUGGING)) &&
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sect->vma && bfd_get_section_size (sect))
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{
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excl_list->add ((LPBYTE) sect->vma, (SIZE_T) bfd_get_section_size (sect));
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deb_printf ("excluding section: %20s %08lx\n", sect->name,
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bfd_get_section_size (sect));
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}
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}
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int
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parse_pe (const char *file_name, exclusion * excl_list)
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{
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if (file_name == NULL || excl_list == NULL)
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return 0;
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bfd *abfd = bfd_openr (file_name, "pei-i386");
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if (abfd == NULL)
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{
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bfd_perror ("failed to open file");
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return 0;
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}
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bfd_check_format (abfd, bfd_object);
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bfd_map_over_sections (abfd, &select_data_section, (PTR) excl_list);
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excl_list->sort_and_check ();
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bfd_close (abfd);
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return 1;
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}
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