DeforaOS/Asm
DeforaOS/Asm
2
0
Fork 0
Code Issues Pull Requests Packages Projects Releases Wiki Activity

Fixed endian of opcodes for the i386 architecture

Browse Source
This commit is contained in:
Pierre Pronchery 2011-04-17 00:35:18 +00:00
parent 902c56d564
commit 0ff490e2a0
1 changed files with 31 additions and 1 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

32
src/arch/i386.c
View File

@ -81,6 +81,8 @@ ArchPlugin arch_plugin =
/* functions */ /* functions */
static int _write_dregister(ArchPlugin * plugin,
ArchOperandDefinition definition, ArchOperand * operand);
static int _write_immediate(ArchPlugin * plugin, static int _write_immediate(ArchPlugin * plugin,
ArchOperandDefinition definition, ArchOperand * operand); ArchOperandDefinition definition, ArchOperand * operand);
static int _write_immediate8(ArchPlugin * plugin, uint8_t value); static int _write_immediate8(ArchPlugin * plugin, uint8_t value);
@ -113,6 +115,13 @@ static int _i386_write(ArchPlugin * plugin, ArchInstruction * instruction,
return 0; return 0;
} }
static int _write_dregister(ArchPlugin * plugin,
ArchOperandDefinition definition, ArchOperand * operand)
{
/* FIXME really implement */
return _write_register(plugin, definition, operand);
}
static int _write_immediate(ArchPlugin * plugin, static int _write_immediate(ArchPlugin * plugin,
ArchOperandDefinition definition, ArchOperand * operand) ArchOperandDefinition definition, ArchOperand * operand)
{ {
@ -164,9 +173,28 @@ static int _write_opcode(ArchPlugin * plugin, ArchInstruction * instruction)
{ {
ArchOperand operand; ArchOperand operand;
#ifdef DEBUG
fprintf(stderr, "DEBUG: %s() size=%u opcode=0x%x\n", __func__,
AO_GET_SIZE(instruction->flags), instruction->opcode);
#endif
memset(&operand, 0, sizeof(operand)); memset(&operand, 0, sizeof(operand));
operand.type = AOT_IMMEDIATE; operand.type = AOT_IMMEDIATE;
operand.value.immediate.value = instruction->opcode; switch(AO_GET_SIZE(instruction->flags) >> 3)
{
case sizeof(uint8_t):
operand.value.immediate.value = instruction->opcode;
break;
case sizeof(uint16_t):
operand.value.immediate.value = _htob16(
instruction->opcode);
break;
case sizeof(uint32_t):
operand.value.immediate.value = _htob32(
instruction->opcode);
break;
default:
return -1; /* FIXME report error */
}
return _write_immediate(plugin, instruction->flags, &operand); return _write_immediate(plugin, instruction->flags, &operand);
} }
@ -175,6 +203,8 @@ static int _write_operand(ArchPlugin * plugin, ArchOperandDefinition definition,
{ {
switch(operand->type) switch(operand->type)
{ {
case AOT_DREGISTER:
return _write_dregister(plugin, definition, operand);
case AOT_IMMEDIATE: case AOT_IMMEDIATE:
return _write_immediate(plugin, definition, operand); return _write_immediate(plugin, definition, operand);
case AOT_REGISTER: case AOT_REGISTER: