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Implement relocs for MIPS32 big endian ELF binaries (openwrt)

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This commit is contained in:
pancake 2016-02-21 00:46:32 +01:00
parent 7c76d45ab7
commit 3c1a4eb040
2 changed files with 20 additions and 1 deletions
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4
libr/anal/fcn.c
View File

@ -301,7 +301,9 @@ static int fcn_recurse(RAnal *anal, RAnalFunction *fcn, ut64 addr, ut8 *buf, ut6
// check if address is readable //:
if (!anal->iob.is_valid_offset (anal->iob.io, addr, 0)) {
eprintf ("Invalid address. Try with io.va=true\n");
if (addr != UT64_MAX && !anal->iob.io->va) {
eprintf ("Invalid address 0x%"PFMT64x". Try with io.va=true\n", addr);
}
return R_ANAL_RET_ERROR; // MUST BE TOO DEEP
}

17
libr/bin/format/elf/elf.c
View File

@ -399,6 +399,10 @@ ut64 Elf_(r_bin_elf_get_section_addr)(struct Elf_(r_bin_elf_obj_t) *bin, const c
return section? section->rva: UT64_MAX;
}
ut64 Elf_(r_bin_elf_get_section_addr_end)(struct Elf_(r_bin_elf_obj_t) *bin, const char *section_name) {
RBinElfSection *section = get_section_by_name (bin, section_name);
return section? section->rva + section->size: UT64_MAX;
}
#define REL (is_rela ? (void*)rela : (void*)rel)
#define REL_BUF is_rela ? (ut8*)(&rela[k]) : (ut8*)(&rel[k])
#define REL_OFFSET is_rela ? rela[k].r_offset : rel[k].r_offset
@ -527,6 +531,19 @@ static ut64 get_import_addr(struct Elf_(r_bin_elf_obj_t) *bin, int sym) {
break;
}
break;
case 8:
// MIPS32 BIG ENDIAN relocs
{
RBinElfSection *s = get_section_by_name(bin, ".rela.plt");
if (s) {
plt_addr = s->rva + s->size;
plt_addr += 108;
plt_addr += k * 16;
free (REL);
return plt_addr;
}
}
break;
default:
eprintf ("Unsupported relocs for this arch %d\n",
bin->ehdr.e_machine);