/* elf_decode_section */
static int _elf_decode_section(AsmFormatPlugin * format, AsmSection * section,
AsmArchInstructionCall ** calls, size_t * calls_cnt)
{
AsmFormatPluginHelper * helper = format->helper;
return helper->decode(helper->format, section->offset, section->size,
section->base, calls, calls_cnt);
}
/* elf_decode_section */
static int _elf_decode_section(AsmFormatPlugin * format, AsmSection * section,
AsmArchInstructionCall ** calls, size_t * calls_cnt)
{
AsmFormatPluginHelper * helper = format->helper;
#ifdef DEBUG
fprintf(stderr, "DEBUG: %s()\n", __func__);
#endif
return helper->decode(helper->format, section->offset, section->size,
section->base, calls, calls_cnt);
}
/* dex_decode_section */
static int _dex_decode_section(AsmFormatPlugin * format, AsmSection * section,
AsmArchInstructionCall ** calls, size_t * calls_cnt)
{
AsmFormatPluginHelper * helper = format->helper;
DexMapCodeItem dmci;
size_t i;
off_t seek;
AsmFunction * f;
size_t j;
DexMapTryItem dmti;
ssize_t s;
uint32_t u32;
int32_t s32;
uint32_t v32;
#ifdef DEBUG
fprintf(stderr, "DEBUG: %s()\n", __func__);
#endif
if(helper->seek(helper->format, section->offset, SEEK_SET)
!= section->offset)
return -1;
for(i = 0; i < section->size; i++)
{
s = sizeof(dmci);
if(helper->read(helper->format, &dmci, s) != s)
return -1;
dmci.registers_size = _htol16(dmci.registers_size);
dmci.ins_size = _htol16(dmci.ins_size);
dmci.outs_size = _htol16(dmci.outs_size);
dmci.tries_size = _htol16(dmci.tries_size);
dmci.debug_info_off = _htol32(dmci.debug_info_off);
dmci.insns_size = _htol32(dmci.insns_size);
seek = helper->seek(helper->format, 0, SEEK_CUR);
if(helper->decode(helper->format, seek, dmci.insns_size * 2,
seek, calls, calls_cnt) != 0)
return -1;
/* update the corresponding function offset */
if((f = helper->get_function_by_id(helper->format, i)) != NULL)
/* XXX not very optimal */
helper->set_function(helper->format, i, f->name, seek,
dmci.insns_size * 2);
/* skip padding and try_items */
seek = (dmci.insns_size & 0x1) == 0x1 ? 2 : 0;
#ifdef DEBUG
fprintf(stderr, "DEBUG: code item %lu/%lu, offset 0x%lx"
", registers 0x%x, size 0x%x, debug @0x%x"
", tries 0x%x, seek 0x%lx\n", i, section->size,
helper->seek(helper->format, 0, SEEK_CUR),
dmci.registers_size, dmci.insns_size,
dmci.debug_info_off, dmci.tries_size, seek);
#endif
if(seek != 0 && helper->seek(helper->format, seek, SEEK_CUR)
< 0)
return -1;
if(dmci.tries_size > 0)
{
for(j = 0; j < dmci.tries_size; j++)
{
s = sizeof(dmti);
if(helper->read(helper->format, &dmti, s) != s)
return -1;
dmti.start_addr = _htol32(dmti.start_addr);
dmti.insn_count = _htol16(dmti.insn_count);
dmti.handler_off = _htol16(dmti.handler_off);
#ifdef DEBUG
fprintf(stderr, "DEBUG: start 0x%x,"
" insn_count 0x%x,"
" handler_off 0x%x\n",
dmti.start_addr,
dmti.insn_count,
dmti.handler_off);
#endif
}
/* encoded catch handler */
/* list size */
if(_dex_decode_uleb128(format, &u32) != 0)
return -1;
for(; u32 > 0; u32--)
{
/* handler size */
if(_dex_decode_sleb128(format, &s32) != 0)
return -1;
/* address pairs */
for(j = abs(s32); j > 0; j--)
{
if(_dex_decode_uleb128(format, &v32)
!= 0)
return -1;
if(_dex_decode_uleb128(format, &v32)
!= 0)
return -1;
}
/* catch-all address */
if(s32 <= 0 && _dex_decode_uleb128(format, &v32)
!= 0)
return -1;
}
/* ensure alignment on 4 bytes */
seek = helper->seek(helper->format, 0, SEEK_CUR);
if((seek = (4 - (seek & 0x3)) & 0x3) != 0)
helper->seek(helper->format, seek, SEEK_CUR);
}
}
return 0;
}
