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/* Copyright (C) 2002 Red Hat, Inc.
Written by Ulrich Drepper <drepper@redhat.com>, 2002.
This program is Open Source software; you can redistribute it and/or
modify it under the terms of the Open Software License version 1.0 as
published by the Open Source Initiative.
You should have received a copy of the Open Software License along
with this program; if not, you may obtain a copy of the Open Software
License version 1.0 from http://www.opensource.org/license/osl.php or
by writing the Open Source Initiative c/o Lawrence Rosen, Esq.,
3001 King Ranch Road, Ukiah, CA 95482. */
#include <fcntl.h>
#include <inttypes.h>
#include <libasm.h>
#include <libelf.h>
#include <stdio.h>
#include <unistd.h>
static const char fname[] = "asm-tst7-out.o";
int
main (void)
{
int result = 0;
size_t cnt;
AsmCtx_t *ctx;
Elf *elf;
int fd;
elf_version (EV_CURRENT);
ctx = asm_begin (fname, false, EM_386, ELFCLASS32, ELFDATA2LSB);
if (ctx == NULL)
{
printf ("cannot create assembler context: %s\n", asm_errmsg (-1));
return 1;
}
if (asm_newcomsym (ctx, "commsym", 4, 16) == NULL)
{
printf ("cannot create common symbol: %s\n", asm_errmsg (-1));
asm_abort (ctx);
return 1;
}
/* Create the output file. */
if (asm_end (ctx) != 0)
{
printf ("cannot create output file: %s\n", asm_errmsg (-1));
asm_abort (ctx);
return 1;
}
/* Check the file. */
fd = open (fname, O_RDONLY);
if (fd == -1)
{
printf ("cannot open generated file: %m\n");
result = 1;
goto out;
}
elf = elf_begin (fd, ELF_C_READ, NULL);
if (elf == NULL)
{
printf ("cannot create ELF descriptor: %s\n", elf_errmsg (-1));
result = 1;
goto out_close;
}
if (elf_kind (elf) != ELF_K_ELF)
{
puts ("not a valid ELF file");
result = 1;
goto out_close2;
}
for (cnt = 1; 1; ++cnt)
{
Elf_Scn *scn;
GElf_Shdr shdr_mem;
GElf_Shdr *shdr;
scn = elf_getscn (elf, cnt);
if (scn == NULL)
{
printf ("cannot get section %Zd: %s\n", cnt, elf_errmsg (-1));
result = 1;
continue;
}
shdr = gelf_getshdr (scn, &shdr_mem);
if (shdr == NULL)
{
printf ("cannot get section header for section %Zd: %s\n",
cnt, elf_errmsg (-1));
result = 1;
continue;
}
/* We are looking for the symbol table. */
if (shdr->sh_type != SHT_SYMTAB)
continue;
for (cnt = 1; cnt< (shdr->sh_size
/ gelf_fsize (elf, ELF_T_SYM, 1, EV_CURRENT));
++cnt)
{
GElf_Sym sym_mem;
GElf_Sym *sym;
if (cnt > 1)
{
puts ("too many symbol");
result = 1;
break;
}
sym = gelf_getsym (elf_getdata (scn, NULL), cnt, &sym_mem);
if (sym == NULL)
{
printf ("cannot get symbol %zu: %s\n", cnt, elf_errmsg (-1));
result = 1;
}
else
{
if (sym->st_shndx != SHN_COMMON)
{
printf ("expected common symbol, got section %u\n",
(unsigned int) sym->st_shndx);
result = 1;
}
if (sym->st_value != 16)
{
printf ("requested alignment 16, is %" PRIuMAX "\n",
(uintmax_t) sym->st_value);
result = 1;
}
if (sym->st_size != 4)
{
printf ("requested size 4, is %" PRIuMAX "\n",
(uintmax_t) sym->st_value);
result = 1;
}
}
}
break;
}
out_close2:
elf_end (elf);
out_close:
close (fd);
out:
/* We don't need the file anymore. */
unlink (fname);
return result;
}
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