DeforaOS/Asm
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Also decode immediate values to some extent

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This commit is contained in:
Pierre Pronchery 2011-04-23 16:48:15 +00:00
parent 53e6e6690f
commit c0a0820fe4
1 changed files with 26 additions and 0 deletions
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26
src/arch/i386.h
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@ -32,6 +32,8 @@ static int _i386_write(ArchPlugin * plugin, ArchInstruction * instruction,
/* i386_decode */
static int _decode_dregister(ArchPlugin * plugin, ArchInstructionCall * call,
size_t i);
static int _decode_immediate(ArchPlugin * plugin, ArchInstructionCall * call,
size_t i);
static int _decode_operand(ArchPlugin * plugin, ArchInstructionCall * call,
size_t i);
static int _decode_register(ArchPlugin * plugin, ArchInstructionCall * call,
@ -92,6 +94,28 @@ static int _decode_dregister(ArchPlugin * plugin, ArchInstructionCall * call,
return 0;
}
static int _decode_immediate(ArchPlugin * plugin, ArchInstructionCall * call,
size_t i)
{
ArchPluginHelper * helper = plugin->helper;
ArchOperandDefinition aod = call->operands[i].type;
uint8_t u8;
/* FIXME implement more sizes */
switch(AO_GET_SIZE(aod) >> 3)
{
case sizeof(u8):
break;
default:
return -error_set_code(1, "%s", strerror(ENOSYS));
}
if(helper->read(helper->arch, &u8, sizeof(u8)) != sizeof(u8))
return -1;
call->operands[i].value.immediate.value = u8;
call->operands[i].value.immediate.negative = 0;
return 0;
}
static int _decode_operand(ArchPlugin * plugin, ArchInstructionCall * call,
size_t i)
{
@ -100,6 +124,8 @@ static int _decode_operand(ArchPlugin * plugin, ArchInstructionCall * call,
/* FIXME implement the rest */
case AOT_DREGISTER:
return _decode_dregister(plugin, call, i);
case AOT_IMMEDIATE:
return _decode_immediate(plugin, call, i);
case AOT_REGISTER:
return _decode_register(plugin, call, i);
}