diff options
| author | Per Fogelstrom <pefo@cvs.openbsd.org> | 1997-05-19 09:24:40 +0000 |
|---|---|---|
| committer | Per Fogelstrom <pefo@cvs.openbsd.org> | 1997-05-19 09:24:40 +0000 |
| commit | f2723088d457594ff35e350493cc6f9a4e71b30f (patch) | |
| tree | 3ac8001feba9baf140fc09c70c0481c3d0327628 /distrib | |
| parent | 6d8a2ce5730453558c0a8ad896c9315e4feb2b23 (diff) | |
A symbol mangeling hack to make chrunch work with MIPS. This is a quick and
dirty fix in the light of no time to make a more correct one. What really
should be done here is to wrap the symbols with the object file name but
that requires the symbol string table to be resized and rewritten.
The fix only affect MIPS. (__mips__ protected).
Diffstat (limited to 'distrib')
| -rw-r--r-- | distrib/crunch/crunchide/elf_hide.c | 35 |
1 files changed, 32 insertions, 3 deletions
diff --git a/distrib/crunch/crunchide/elf_hide.c b/distrib/crunch/crunchide/elf_hide.c index b23e31f5fe3..5bb9f0ae70e 100644 --- a/distrib/crunch/crunchide/elf_hide.c +++ b/distrib/crunch/crunchide/elf_hide.c @@ -1,4 +1,4 @@ -/* $OpenBSD: elf_hide.c,v 1.3 1997/05/06 17:08:29 niklas Exp $ */ +/* $OpenBSD: elf_hide.c,v 1.4 1997/05/19 09:24:39 pefo Exp $ */ /* * Copyright (c) 1997 Dale Rahn. All rights reserved. @@ -312,6 +312,12 @@ hide_sym(Elf32_Ehdr *ehdr, Elf32_Shdr *symsect, unsigned char info; Elf32_Sym *psymtab; +#ifdef __mips__ + int f; + sleep(1); + f = time(NULL) * 200; +#endif + for (i = 0 ; i < (symtabsize/sizeof(Elf32_Sym)); i++) { psymtab = &(symtab[i]); if ((psymtab->st_info & 0xf0) == 0x10 && @@ -325,16 +331,39 @@ hide_sym(Elf32_Ehdr *ehdr, Elf32_Shdr *symsect, 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 chrunchide with MIPS. */ +/* XXX Because MIPS needs global symbols to stay global (has to do with GOT) */ +/* XXX we mess around with the symbol names instead. For most uses this */ +/* XXX will be no problem, symbols are stripped anyway. However, if many */ +/* XXX one character symbols exist, names may clash. */ + { + char *p; + int 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] += rand(); + } + } + +#endif #ifdef DEBUG printf("st_info %x\n", psymtab->st_info); #endif } } -#ifdef DEBUG -#endif reorder_syms(ehdr, symsect, symtab, symtabsize, symtabsecnum); } void |