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https://github.com/freebsd/freebsd-src
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839529caa9
Some notable improvements include: readelf: - Add AArch64 relocation definitions. - Report value of unknown relocation types. elfcopy: - Consider symbols with STB_GNU_UNIQUE binding as global symbols. - Fixed support for VMA adjustment for loadable sections found in relocatable objects. - Handle nameless global symbols. - Improve wildcard matching for !-prefixed symbols. - Add PE/COFF support. elfdump: - Improve section type reporting. - Add MIPS-specific section types. This update also includes a significant number of bug fixes. PR: 207091 [exp-run] Sponsored by: The FreeBSD Foundation
120 lines
2.8 KiB
C
120 lines
2.8 KiB
C
/*-
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* Copyright (c) 2015 Kai Wang
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*/
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#include <assert.h>
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#include <errno.h>
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#include <stdlib.h>
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#include <string.h>
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#include "_libpe.h"
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ELFTC_VCSID("$Id: pe_dos.c 3312 2016-01-10 09:23:51Z kaiwang27 $");
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PE_DosHdr *
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pe_msdos_header(PE *pe)
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{
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if (pe == NULL) {
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errno = EINVAL;
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return (NULL);
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}
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if (pe->pe_dh == NULL) {
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errno = ENOENT;
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return (NULL);
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}
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return (pe->pe_dh);
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}
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char *
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pe_msdos_stub(PE *pe, size_t *len)
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{
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if (pe == NULL || len == NULL) {
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errno = EINVAL;
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return (NULL);
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}
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if (pe->pe_stub_ex > 0 &&
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(pe->pe_flags & LIBPE_F_LOAD_DOS_STUB) == 0) {
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assert((pe->pe_flags & LIBPE_F_SPECIAL_FILE) == 0);
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(void) libpe_read_msdos_stub(pe);
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}
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*len = sizeof(PE_DosHdr) + pe->pe_stub_ex;
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return (pe->pe_stub);
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}
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int
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ps_update_msdos_header(PE *pe, PE_DosHdr *dh)
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{
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if (pe == NULL || dh == NULL) {
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errno = EINVAL;
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return (-1);
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}
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if (pe->pe_cmd == PE_C_READ || pe->pe_flags & LIBPE_F_FD_DONE) {
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errno = EACCES;
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return (-1);
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}
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if (pe->pe_dh == NULL) {
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if ((pe->pe_dh = malloc(sizeof(PE_DosHdr))) == NULL) {
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errno = ENOMEM;
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return (-1);
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}
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}
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*pe->pe_dh = *dh;
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pe->pe_flags |= LIBPE_F_DIRTY_DOS_HEADER;
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return (0);
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}
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int
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ps_update_msdos_stub(PE *pe, char *dos_stub, size_t sz)
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{
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if (pe == NULL || dos_stub == NULL || sz == 0) {
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errno = EINVAL;
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return (-1);
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}
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if (pe->pe_cmd == PE_C_READ || pe->pe_flags & LIBPE_F_FD_DONE) {
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errno = EACCES;
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return (-1);
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}
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pe->pe_stub_app = dos_stub;
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pe->pe_stub_app_sz = sz;
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return (0);
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}
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