/*
* This program is for making libtcc1.a without ar
* tiny_libmaker - tiny elf lib maker
* usage: tiny_libmaker [lib] files...
* Copyright (c) 2007 Timppa
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, write to the Free Software
* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA.
*/
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include "../../elf.h"
#ifdef TCC_TARGET_X86_64
# define ELFCLASSW ELFCLASS64
# define ElfW(type) Elf##64##_##type
# define ELFW(type) ELF##64##_##type
#else
# define ELFCLASSW ELFCLASS32
# define ElfW(type) Elf##32##_##type
# define ELFW(type) ELF##32##_##type
#endif
#define ARMAG "!<arch>\n"
#define ARFMAG "`\n"
typedef struct ArHdr {
char ar_name[16];
char ar_date[12];
char ar_uid[6];
char ar_gid[6];
char ar_mode[8];
char ar_size[10];
char ar_fmag[2];
} ArHdr;
unsigned long le2belong(unsigned long ul) {
return ((ul & 0xFF0000)>>8)+((ul & 0xFF000000)>>24) +
((ul & 0xFF)<<24)+((ul & 0xFF00)<<8);
}
ArHdr arhdr = {
"/ ",
" ",
"0 ",
"0 ",
"0 ",
" ",
ARFMAG
};
ArHdr arhdro = {
" ",
" ",
"0 ",
"0 ",
"0 ",
" ",
ARFMAG
};
int main(int argc, char **argv)
{
FILE *fi, *fh = NULL, *fo = NULL;
ElfW(Ehdr) *ehdr;
ElfW(Shdr) *shdr;
ElfW(Sym) *sym;
int i, fsize, iarg;
char *buf, *shstr, *symtab = NULL, *strtab = NULL;
int symtabsize = 0;//, strtabsize = 0;
char *anames = NULL;
int *afpos = NULL;
int istrlen, strpos = 0, fpos = 0, funccnt = 0, funcmax, hofs;
char afile[260], tfile[260], stmp[20];
char *file, *name;
int ret = 2;
iarg = 1;
if (argc < 2)
{
printf("usage: tiny_libmaker [lib] file...\n");
return 1;
}
for (i=1; i<argc; i++) {
if (argv[i][istrlen-2] == '.') {
if(argv[i][istrlen-1] == 'a')
else if(argv[i][istrlen-1] == 'o') {
iarg = i;
break;
}
}
}
if ((fh
= fopen(afile
, "wb")) == NULL
)
{
fprintf(stderr
, "Can't open file %s \n", afile
);
goto the_end;
}
if ((fo
= fopen(tfile
, "wb+")) == NULL
)
{
fprintf(stderr
, "Can't create temporary file %s\n", tfile
);
goto the_end;
}
funcmax = 250;
afpos
= realloc(NULL
, funcmax
* sizeof *afpos
); // 250 func
memcpy(&arhdro.
ar_mode, "100666", 6);
//iarg = 1;
while (iarg < argc)
{
if (!strcmp(argv
[iarg
], "rcs")) {
iarg++;
continue;
}
if ((fi
= fopen(argv
[iarg
], "rb")) == NULL
)
{
fprintf(stderr
, "Can't open file %s \n", argv
[iarg
]);
goto the_end;
}
fread(buf
, fsize
, 1, fi
);
//printf("%s:\n", argv[iarg]);
// elf header
ehdr = (ElfW(Ehdr) *)buf;
if (ehdr->e_ident[4] != ELFCLASSW)
{
fprintf(stderr
, "Unsupported Elf Class: %s\n", argv
[iarg
]);
goto the_end;
}
shdr = (ElfW(Shdr) *) (buf + ehdr->e_shoff + ehdr->e_shstrndx * ehdr->e_shentsize);
shstr = (char *)(buf + shdr->sh_offset);
for (i = 0; i < ehdr->e_shnum; i++)
{
shdr = (ElfW(Shdr) *) (buf + ehdr->e_shoff + i * ehdr->e_shentsize);
if (!shdr->sh_offset)
continue;
if (shdr->sh_type == SHT_SYMTAB)
{
symtab = (char *)(buf + shdr->sh_offset);
symtabsize = shdr->sh_size;
}
if (shdr->sh_type == SHT_STRTAB)
{
if (!strcmp(shstr
+ shdr
->sh_name
, ".strtab"))
{
strtab = (char *)(buf + shdr->sh_offset);
//strtabsize = shdr->sh_size;
}
}
}
if (symtab && symtabsize)
{
int nsym = symtabsize / sizeof(ElfW(Sym));
//printf("symtab: info size shndx name\n");
for (i = 1; i < nsym; i++)
{
sym = (ElfW(Sym) *) (symtab + i * sizeof(ElfW(Sym)));
if (sym->st_shndx &&
(sym->st_info == 0x10
|| sym->st_info == 0x11
|| sym->st_info == 0x12
)) {
//printf("symtab: %2Xh %4Xh %2Xh %s\n", sym->st_info, sym->st_size, sym->st_shndx, strtab + sym->st_name);
istrlen
= strlen(strtab
+ sym
->st_name
)+1;
anames
= realloc(anames
, strpos
+istrlen
);
strcpy(anames
+ strpos
, strtab
+ sym
->st_name
);
strpos += istrlen;
if (++funccnt >= funcmax) {
funcmax += 250;
afpos
= realloc(afpos
, funcmax
* sizeof *afpos
); // 250 func more
}
afpos[funccnt] = fpos;
}
}
}
file = argv[iarg];
name > file && name[-1] != '/' && name[-1] != '\\';
--name);
if (istrlen >= sizeof(arhdro.ar_name))
istrlen = sizeof(arhdro.ar_name) - 1;
memset(arhdro.
ar_name, ' ', sizeof(arhdro.
ar_name));
memcpy(arhdro.
ar_name, name
, istrlen
);
arhdro.ar_name[istrlen] = '/';
memcpy(&arhdro.
ar_size, stmp
, 10);
fwrite(&arhdro
, sizeof(arhdro
), 1, fo
);
iarg++;
fpos += (fsize + sizeof(arhdro));
}
hofs = 8 + sizeof(arhdr) + strpos + (funccnt+1) * sizeof(int);
fpos = 0;
if ((hofs & 1)) // align
hofs++, fpos = 1;
// write header
fwrite("!<arch>\n", 8, 1, fh
);
sprintf(stmp
, "%-10d", (int)(strpos
+ (funccnt
+1) * sizeof(int)));
memcpy(&arhdr.
ar_size, stmp
, 10);
fwrite(&arhdr
, sizeof(arhdr
), 1, fh
);
afpos[0] = le2belong(funccnt);
for (i=1; i<=funccnt; i++)
afpos[i] = le2belong(afpos[i] + hofs);
fwrite(afpos
, (funccnt
+1) * sizeof(int), 1, fh
);
fwrite(anames
, strpos
, 1, fh
);
if (fpos)
// write objects
fread(buf
, fsize
, 1, fo
);
ret = 0;
the_end:
if (anames)
if (afpos)
if (fh)
if (fo)
return ret;
}