void
hide_sym(Elf_Ehdr * ehdr, Elf_Shdr * symsect,
Elf_Sym * symtab, int symtabsize, int symtabsecnum)
{
int i;
unsigned char info;
Elf_Sym *psymtab;
for (i = 0; i < (symtabsize / sizeof(Elf_Sym)); i++) {
psymtab = &(symtab[i]);
if ((psymtab->st_info & 0xf0) == 0x10 &&
(psymtab->st_shndx != SHN_UNDEF)) {
if (in_keep_list(get_str(psymtab->st_name)))
continue;
#ifdef DEBUG
printf("symbol %d:\n", i);
printf("st_name %x \"%s\"\n", psymtab->st_name,
get_str(psymtab->st_name));
printf("st_info %x\n", psymtab->st_info);
#endif
if (!elf_mangle) {
info = psymtab->st_info;
info = info & 0xf;
psymtab->st_info = info;
} else {
mangle_str(get_str(psymtab->st_name));
}
#ifdef DEBUG
printf("st_info %x\n", psymtab->st_info);
#endif
}
}
reorder_syms(ehdr, symsect, symtab, symtabsize, symtabsecnum);
}
void
hide_sym(Elf_Ehdr * ehdr, Elf_Shdr * symsect,
Elf_Sym * symtab, int symtabsize, int symtabsecnum)
{
int i;
unsigned char info;
Elf_Sym *psymtab;
#ifdef __mips__
u_int32_t f = arc4random();
#endif
for (i = 0; i < (symtabsize / sizeof(Elf_Sym)); i++) {
psymtab = &(symtab[i]);
if ((psymtab->st_info & 0xf0) == 0x10 &&
(psymtab->st_shndx != SHN_UNDEF)) {
if (in_keep_list(get_str(psymtab->st_name)))
continue;
#ifdef DEBUG
printf("symbol %d:\n", i);
printf("st_name %x \"%s\"\n", psymtab->st_name,
get_str(psymtab->st_name));
printf("st_info %x\n", psymtab->st_info);
#endif
#ifndef __mips__
info = psymtab->st_info;
info = info & 0xf;
psymtab->st_info = info;
#else
/*
* XXX This is a small ugly hack to be able to use
* XXX chrunchide with MIPS.
* XXX Because MIPS needs global symbols to stay
* XXX global (has to do with GOT), we mess around
* XXX with the symbol names instead. For most uses
* XXX this will be no problem, symbols are stripped
* XXX anyway. However, if many one character
* XXX symbols exist, names may clash.
*/
{
char *p;
u_int32_t n, z;
z = f++;
p = get_str(psymtab->st_name);
n = strlen(p);
if (n > 4)
n = 4;
while (n--) {
p[n] = z;
z >>= 8;
while (p[n] == 0)
p[n] += arc4random();
}
}
#endif
#ifdef DEBUG
printf("st_info %x\n", psymtab->st_info);
#endif
}
}
reorder_syms(ehdr, symsect, symtab, symtabsize, symtabsecnum);
}
