diff options
Diffstat (limited to 'sysdeps/linux-gnu/arm/plt.c')
| -rw-r--r-- | sysdeps/linux-gnu/arm/plt.c | 40 |
1 files changed, 38 insertions, 2 deletions
diff --git a/sysdeps/linux-gnu/arm/plt.c b/sysdeps/linux-gnu/arm/plt.c index bd92a63..1b97705 100644 --- a/sysdeps/linux-gnu/arm/plt.c +++ b/sysdeps/linux-gnu/arm/plt.c @@ -1,9 +1,45 @@ +/* + * This file is part of ltrace. + * Copyright (C) 2010 Zach Welch, CodeSourcery + * Copyright (C) 2004,2008,2009 Juan Cespedes + * + * This program is free software; you can redistribute it and/or + * modify it under the terms of the GNU General Public License as + * published by the Free Software Foundation; either version 2 of the + * License, or (at your option) any later version. + * + * This program 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 + * General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software + * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA + * 02110-1301 USA + */ + #include <gelf.h> -#include "common.h" + +#include "proc.h" +#include "library.h" +#include "ltrace-elf.h" + +static int +arch_plt_entry_has_stub(struct ltelf *lte, size_t off) { + uint16_t op = *(uint16_t *)((char *)lte->relplt->d_buf + off); + return op == 0x4778; +} GElf_Addr arch_plt_sym_val(struct ltelf *lte, size_t ndx, GElf_Rela * rela) { - return lte->plt_addr + 20 + ndx * 12; + size_t start = lte->relplt->d_size + 12; + size_t off = start + 20, i; + for (i = 0; i < ndx; i++) + off += arch_plt_entry_has_stub(lte, off) ? 16 : 12; + if (arch_plt_entry_has_stub(lte, off)) + off += 4; + return lte->plt_addr + off - start; } void * |