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/*
* 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 "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) {
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 *
sym2addr(Process *proc, struct library_symbol *sym) {
return sym->enter_addr;
}
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