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Checkin tiny_libmaker (ar replacement) by Timovj Lahde

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This commit is contained in:
grischka
2008-03-08 19:55:47 +00:00
parent 265dddbecf
commit 2eaa1104f7
7 changed files with 393 additions and 72 deletions
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319
win32/tools/tiny_libmaker.c Normal file
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/*
* 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 program is free software but WITHOUT ANY WARRANTY
*/
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
/* #include "ar-elf.h" */
/* "ar-elf.h" */
/* ELF_v1.2.pdf */
typedef unsigned short int Elf32_Half;
typedef int Elf32_Sword;
typedef unsigned int Elf32_Word;
typedef unsigned int Elf32_Addr;
typedef unsigned int Elf32_Off;
typedef unsigned short int Elf32_Section;
#define EI_NIDENT 16
typedef struct {
unsigned char e_ident[EI_NIDENT];
Elf32_Half e_type;
Elf32_Half e_machine;
Elf32_Word e_version;
Elf32_Addr e_entry;
Elf32_Off e_phoff;
Elf32_Off e_shoff;
Elf32_Word e_flags;
Elf32_Half e_ehsize;
Elf32_Half e_phentsize;
Elf32_Half e_phnum;
Elf32_Half e_shentsize;
Elf32_Half e_shnum;
Elf32_Half e_shstrndx;
} Elf32_Ehdr;
typedef struct {
Elf32_Word sh_name;
Elf32_Word sh_type;
Elf32_Word sh_flags;
Elf32_Addr sh_addr;
Elf32_Off sh_offset;
Elf32_Word sh_size;
Elf32_Word sh_link;
Elf32_Word sh_info;
Elf32_Word sh_addralign;
Elf32_Word sh_entsize;
} Elf32_Shdr;
#define SHT_NULL 0
#define SHT_PROGBITS 1
#define SHT_SYMTAB 2
#define SHT_STRTAB 3
#define SHT_RELA 4
#define SHT_HASH 5
#define SHT_DYNAMIC 6
#define SHT_NOTE 7
#define SHT_NOBITS 8
#define SHT_REL 9
#define SHT_SHLIB 10
#define SHT_DYNSYM 11
typedef struct {
Elf32_Word st_name;
Elf32_Addr st_value;
Elf32_Word st_size;
unsigned char st_info;
unsigned char st_other;
Elf32_Half st_shndx;
} Elf32_Sym;
#define ELF32_ST_BIND(i) ((i)>>4)
#define ELF32_ST_TYPE(i) ((i)&0xf)
#define ELF32_ST_INFO(b,t) (((b)<<4)+((t)&0xf))
#define STT_NOTYPE 0
#define STT_OBJECT 1
#define STT_FUNC 2
#define STT_SECTION 3
#define STT_FILE 4
#define STT_LOPROC 13
#define STT_HIPROC 15
#define STB_LOCAL 0
#define STB_GLOBAL 1
#define STB_WEAK 2
#define STB_LOPROC 13
#define STB_HIPROC 15
typedef struct {
Elf32_Word p_type;
Elf32_Off p_offset;
Elf32_Addr p_vaddr;
Elf32_Addr p_paddr;
Elf32_Word p_filesz;
Elf32_Word p_memsz;
Elf32_Word p_flags;
Elf32_Word p_align;
} Elf32_Phdr;
/* "ar-elf.h" ends */
#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, *fo;
Elf32_Ehdr *ehdr;
Elf32_Shdr *shdr;
Elf32_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];
strcpy(afile, "ar_test.a");
iarg = 1;
if (argc < 2)
{
printf("usage: tiny_libmaker [lib] file...\n");
return 1;
}
for (i=1; i<argc; i++) {
istrlen = strlen(argv[i]);
if (argv[i][istrlen-2] == '.') {
if(argv[i][istrlen-1] == 'a')
strcpy(afile, argv[i]);
else if(argv[i][istrlen-1] == 'o') {
iarg = i;
break;
}
}
}
//tfile[0] = '.'; tfile[1] = '/';
//if (tmpnam(&tfile[2])) {
strcpy(tfile, "./XXXXXX");
if (mktemp(tfile))
{
if ((fo = fopen(tfile, "wb+")) == NULL)
{
fprintf(stderr, "Can't open file %s \n", tfile);
return 2;
}
}
/*
if ((fo = tmpfile()) == NULL)
{
fprintf(stderr, "Can't open temporary file \n");
return 2;
}
*/
if ((fh = fopen(afile, "wb")) == NULL)
{
fprintf(stderr, "Can't open file %s \n", afile);
remove(tfile);
return 2;
}
funcmax = 1000;
afpos = realloc(NULL, funcmax); // 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]);
remove(tfile);
return 2;
}
fseek(fi, 0, SEEK_END);
fsize = ftell(fi);
fseek(fi, 0, SEEK_SET);
buf = malloc(fsize + 1);
fread(buf, fsize, 1, fi);
fclose(fi);
printf("%s:\n", argv[iarg]);
// elf header
ehdr = (Elf32_Ehdr *)buf;
shdr = (Elf32_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 = (Elf32_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(Elf32_Sym);
//printf("symtab: info size shndx name\n");
for (i = 1; i < nsym; i++)
{
sym = (Elf32_Sym *) (symtab + i * sizeof(Elf32_Sym));
if (sym->st_shndx && (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) {
afpos = realloc(NULL, funcmax+1000); // 250 func more
funcmax += 1000;
}
afpos[++funccnt] = fpos;
}
}
}
memset(&arhdro.ar_name, ' ', sizeof(arhdr.ar_name));
strcpy(arhdro.ar_name, argv[iarg]);
arhdro.ar_name[strlen(argv[iarg])] = '/';
sprintf(stmp, "%-10d", fsize);
memcpy(&arhdro.ar_size, stmp, 10);
fwrite(&arhdro, sizeof(arhdro), 1, fo);
fwrite(buf, fsize, 1, fo);
free(buf);
iarg++;
fpos += (fsize + sizeof(arhdro));
}
hofs = 8 + sizeof(arhdr) + strpos + (funccnt+1) * sizeof(int);
if ((hofs & 1)) { // align
hofs++;
fpos = 1;
} else fpos = 0;
// write header
fwrite("!<arch>\n", 8, 1, fh);
sprintf(stmp, "%-10d", 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) fwrite("", 1, 1, fh);
// write objects
fseek(fo, 0, SEEK_END);
fsize = ftell(fo);
fseek(fo, 0, SEEK_SET);
buf = malloc(fsize + 1);
fread(buf, fsize, 1, fo);
fclose(fo);
fwrite(buf, fsize, 1, fh);
fclose(fh);
free(buf);
if (anames)
free(anames);
if (afpos)
free(afpos);
remove(tfile);
return 0;
}