337 lines
7.7 KiB
C
337 lines
7.7 KiB
C
/* Copyright (C) 2002-2010 Red Hat, Inc.
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This file is part of elfutils.
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Written by Ulrich Drepper <drepper@redhat.com>, 2002.
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This file 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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elfutils is distributed in the hope that it will be useful, but
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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 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, see <http://www.gnu.org/licenses/>. */
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#ifdef HAVE_CONFIG_H
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# include <config.h>
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#endif
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#include <fcntl.h>
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#include <inttypes.h>
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#include ELFUTILS_HEADER(asm)
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#include ELFUTILS_HEADER(ebl)
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#include <libelf.h>
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#include <stdio.h>
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#include <string.h>
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#include <unistd.h>
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static const char fname[] = "asm-tst9-out.o";
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static int32_t input[] =
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{
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0, 1, 129, 510, 2000, 33000, 0x7ffffff, 0x7fffffff
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};
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#define ninput (sizeof (input) / sizeof (input[0]))
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static const GElf_Ehdr expected_ehdr =
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{
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.e_ident = { [EI_MAG0] = ELFMAG0,
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[EI_MAG1] = ELFMAG1,
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[EI_MAG2] = ELFMAG2,
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[EI_MAG3] = ELFMAG3,
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[EI_CLASS] = ELFCLASS32,
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[EI_DATA] = ELFDATA2LSB,
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[EI_VERSION] = EV_CURRENT },
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.e_type = ET_REL,
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.e_machine = EM_386,
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.e_version = EV_CURRENT,
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.e_shoff = 180,
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.e_ehsize = sizeof (Elf32_Ehdr),
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.e_shentsize = sizeof (Elf32_Shdr),
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.e_shnum = 3,
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.e_shstrndx = 2
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};
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static const char *scnnames[3] =
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{
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[0] = "",
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[1] = ".data",
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[2] = ".shstrtab"
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};
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static const char expecteddata[] =
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{
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0x00, 0x00, 0x00, 0x00, 0x01, 0x01, 0xff, 0xff, 0xff, 0xff, 0x0f, 0x7f,
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0x81, 0x01, 0x81, 0x01, 0xff, 0xfe, 0xff, 0xff, 0x0f, 0xff, 0x7e, 0xfe,
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0x03, 0xfe, 0x03, 0x82, 0xfc, 0xff, 0xff, 0x0f, 0x82, 0x7c, 0xd0, 0x0f,
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0xd0, 0x0f, 0xb0, 0xf0, 0xff, 0xff, 0x0f, 0xb0, 0x70, 0xe8, 0x81, 0x02,
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0xe8, 0x81, 0x02, 0x98, 0xfe, 0xfd, 0xff, 0x0f, 0x98, 0xfe, 0x7d, 0xff,
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0xff, 0xff, 0x3f, 0xff, 0xff, 0xff, 0x3f, 0x81, 0x80, 0x80, 0xc0, 0x0f,
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0x81, 0x80, 0x80, 0x40, 0xff, 0xff, 0xff, 0xff, 0x07, 0xff, 0xff, 0xff,
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0xff, 0x07, 0x81, 0x80, 0x80, 0x80, 0x08, 0x81, 0x80, 0x80, 0x80, 0x78
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};
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int
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main (void)
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{
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AsmCtx_t *ctx;
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AsmScn_t *scn;
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int result = 0;
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int fd;
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Elf *elf;
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GElf_Ehdr ehdr_mem;
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GElf_Ehdr *ehdr;
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size_t cnt;
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elf_version (EV_CURRENT);
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Ebl *ebl = ebl_openbackend_machine (EM_386);
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if (ebl == NULL)
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{
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puts ("cannot open backend library");
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return 1;
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}
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ctx = asm_begin (fname, ebl, false);
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if (ctx == NULL)
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{
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printf ("cannot create assembler context: %s\n", asm_errmsg (-1));
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return 1;
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}
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/* Create two sections. */
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scn = asm_newscn (ctx, ".data", SHT_PROGBITS, SHF_ALLOC | SHF_WRITE);
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if (scn == NULL)
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{
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printf ("cannot create section in output file: %s\n", asm_errmsg (-1));
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asm_abort (ctx);
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return 1;
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}
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/* Special alignment for the .text section. */
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if (asm_align (scn, 16) != 0)
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{
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printf ("cannot align .text section: %s\n", asm_errmsg (-1));
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result = 1;
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}
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/* Add a few ULEB128 and SLEB128 numbers. */
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for (cnt = 0; cnt < ninput; ++cnt)
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{
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if (asm_adduleb128 (scn, input[cnt]) != 0)
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{
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printf ("cannot insert uleb %" PRIu32 ": %s\n",
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(uint32_t) input[cnt], asm_errmsg (-1));
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result = 1;
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}
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if (asm_addsleb128 (scn, input[cnt]) != 0)
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{
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printf ("cannot insert sleb %" PRId32 ": %s\n",
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input[cnt], asm_errmsg (-1));
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result = 1;
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}
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if (asm_adduleb128 (scn, -input[cnt]) != 0)
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{
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printf ("cannot insert uleb %" PRIu32 ": %s\n",
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(uint32_t) -input[cnt], asm_errmsg (-1));
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result = 1;
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}
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if (asm_addsleb128 (scn, -input[cnt]) != 0)
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{
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printf ("cannot insert sleb %" PRId32 ": %s\n",
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-input[cnt], asm_errmsg (-1));
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result = 1;
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}
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}
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/* Create the output file. */
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if (asm_end (ctx) != 0)
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{
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printf ("cannot create output file: %s\n", asm_errmsg (-1));
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asm_abort (ctx);
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return 1;
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}
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/* Check the file. */
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fd = open (fname, O_RDONLY);
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if (fd == -1)
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{
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printf ("cannot open generated file: %m\n");
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result = 1;
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goto out;
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}
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elf = elf_begin (fd, ELF_C_READ, NULL);
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if (elf == NULL)
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{
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printf ("cannot create ELF descriptor: %s\n", elf_errmsg (-1));
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result = 1;
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goto out_close;
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}
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if (elf_kind (elf) != ELF_K_ELF)
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{
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puts ("not a valid ELF file");
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result = 1;
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goto out_close2;
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}
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ehdr = gelf_getehdr (elf, &ehdr_mem);
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if (ehdr == NULL)
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{
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printf ("cannot get ELF header: %s\n", elf_errmsg (-1));
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result = 1;
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goto out_close2;
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}
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if (memcmp (ehdr, &expected_ehdr, sizeof (GElf_Ehdr)) != 0)
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{
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puts ("ELF header does not match");
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result = 1;
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goto out_close2;
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}
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for (cnt = 1; cnt < 3; ++cnt)
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{
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Elf_Scn *escn;
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GElf_Shdr shdr_mem;
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GElf_Shdr *shdr;
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escn = elf_getscn (elf, cnt);
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if (escn == NULL)
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{
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printf ("cannot get section %zd: %s\n", cnt, elf_errmsg (-1));
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result = 1;
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continue;
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}
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shdr = gelf_getshdr (escn, &shdr_mem);
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if (shdr == NULL)
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{
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printf ("cannot get section header for section %zd: %s\n",
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cnt, elf_errmsg (-1));
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result = 1;
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continue;
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}
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if (strcmp (elf_strptr (elf, ehdr->e_shstrndx, shdr->sh_name),
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scnnames[cnt]) != 0)
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{
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printf ("section %zd's name differs: %s vs %s\n", cnt,
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elf_strptr (elf, ehdr->e_shstrndx, shdr->sh_name),
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scnnames[cnt]);
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result = 1;
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}
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if (shdr->sh_type != (cnt == 2 ? SHT_STRTAB : SHT_PROGBITS))
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{
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printf ("section %zd's type differs\n", cnt);
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result = 1;
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}
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if ((cnt == 1 && shdr->sh_flags != (SHF_ALLOC | SHF_WRITE))
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|| (cnt == 2 && shdr->sh_flags != 0))
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{
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printf ("section %zd's flags differs\n", cnt);
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result = 1;
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}
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if (shdr->sh_addr != 0)
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{
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printf ("section %zd's address differs\n", cnt);
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result = 1;
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}
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if ((cnt == 1 && shdr->sh_offset != ((sizeof (Elf32_Ehdr) + 15) & ~15))
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|| (cnt == 2
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&& shdr->sh_offset != (((sizeof (Elf32_Ehdr) + 15) & ~15)
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+ sizeof (expecteddata))))
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{
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printf ("section %zd's offset differs\n", cnt);
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result = 1;
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}
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if ((cnt == 1 && shdr->sh_size != sizeof (expecteddata))
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|| (cnt == 2 && shdr->sh_size != 17))
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{
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printf ("section %zd's size differs\n", cnt);
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result = 1;
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}
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if (shdr->sh_link != 0)
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{
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printf ("section %zd's link differs\n", cnt);
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result = 1;
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}
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if (shdr->sh_info != 0)
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{
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printf ("section %zd's info differs\n", cnt);
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result = 1;
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}
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if ((cnt == 1 && shdr->sh_addralign != 16)
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|| (cnt != 1 && shdr->sh_addralign != 1))
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{
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printf ("section %zd's addralign differs\n", cnt);
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result = 1;
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}
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if (shdr->sh_entsize != 0)
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{
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printf ("section %zd's entsize differs\n", cnt);
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result = 1;
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}
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if (cnt == 1)
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{
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Elf_Data *data = elf_getdata (escn, NULL);
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if (data == NULL)
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{
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printf ("cannot get data of section %zd\n", cnt);
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result = 1;
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}
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else
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{
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if (data->d_size != sizeof (expecteddata))
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{
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printf ("data block size of section %zd wrong: got %zd, "
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"expected 96\n", cnt, data->d_size);
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result = 1;
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}
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if (memcmp (data->d_buf, expecteddata, sizeof (expecteddata))
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!= 0)
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{
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printf ("data block content of section %zd wrong\n", cnt);
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result = 1;
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}
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}
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}
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}
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out_close2:
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elf_end (elf);
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out_close:
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close (fd);
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out:
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/* We don't need the file anymore. */
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unlink (fname);
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ebl_closebackend (ebl);
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return result;
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}
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