kolibrios-fun/contrib/other/udcli/libudis86/syn-intel.c
maxcodehack 8b2f0665a4 Upload udis86 library #2
git-svn-id: svn://kolibrios.org@8323 a494cfbc-eb01-0410-851d-a64ba20cac60
2020-12-05 07:06:49 +00:00

209 lines
4.7 KiB
C
Executable File

/* -----------------------------------------------------------------------------
* syn-intel.c
*
* Copyright (c) 2002, 2003, 2004 Vivek Mohan <vivek@sig9.com>
* All rights reserved. See (LICENSE)
* -----------------------------------------------------------------------------
*/
#include "types.h"
#include "extern.h"
#include "decode.h"
#include "itab.h"
#include "syn.h"
/* -----------------------------------------------------------------------------
* opr_cast() - Prints an operand cast.
* -----------------------------------------------------------------------------
*/
static void
opr_cast(struct ud* u, struct ud_operand* op)
{
switch(op->size) {
case 8: mkasm(u, "byte " ); break;
case 16: mkasm(u, "word " ); break;
case 32: mkasm(u, "dword "); break;
case 64: mkasm(u, "qword "); break;
case 80: mkasm(u, "tword "); break;
default: break;
}
if (u->br_far)
mkasm(u, "far ");
else if (u->br_near)
mkasm(u, "near ");
}
/* -----------------------------------------------------------------------------
* gen_operand() - Generates assembly output for each operand.
* -----------------------------------------------------------------------------
*/
static void gen_operand(struct ud* u, struct ud_operand* op, int syn_cast)
{
switch(op->type) {
case UD_OP_REG:
mkasm(u, ud_reg_tab[op->base - UD_R_AL]);
break;
case UD_OP_MEM: {
int op_f = 0;
if (syn_cast)
opr_cast(u, op);
mkasm(u, "[");
if (u->pfx_seg)
mkasm(u, "%s:", ud_reg_tab[u->pfx_seg - UD_R_AL]);
if (op->base) {
mkasm(u, "%s", ud_reg_tab[op->base - UD_R_AL]);
op_f = 1;
}
if (op->index) {
if (op_f)
mkasm(u, "+");
mkasm(u, "%s", ud_reg_tab[op->index - UD_R_AL]);
op_f = 1;
}
if (op->scale)
mkasm(u, "*%d", op->scale);
if (op->offset == 8) {
if (op->lval.sbyte < 0)
mkasm(u, "-0x%x", -op->lval.sbyte);
else mkasm(u, "%s0x%x", (op_f) ? "+" : "", op->lval.sbyte);
}
else if (op->offset == 16)
mkasm(u, "%s0x%x", (op_f) ? "+" : "", op->lval.uword);
else if (op->offset == 32) {
if (u->adr_mode == 64) {
if (op->lval.sdword < 0)
mkasm(u, "-0x%x", -op->lval.sdword);
else mkasm(u, "%s0x%x", (op_f) ? "+" : "", op->lval.sdword);
}
else mkasm(u, "%s0x%lx", (op_f) ? "+" : "", op->lval.udword);
}
else if (op->offset == 64)
mkasm(u, "%s0x" FMT64 "x", (op_f) ? "+" : "", op->lval.uqword);
mkasm(u, "]");
break;
}
case UD_OP_IMM:
if (syn_cast) opr_cast(u, op);
switch (op->size) {
case 8: mkasm(u, "0x%x", op->lval.ubyte); break;
case 16: mkasm(u, "0x%x", op->lval.uword); break;
case 32: mkasm(u, "0x%lx", op->lval.udword); break;
case 64: mkasm(u, "0x" FMT64 "x", op->lval.uqword); break;
default: break;
}
break;
case UD_OP_JIMM:
if (syn_cast) opr_cast(u, op);
switch (op->size) {
case 8:
mkasm(u, "0x" FMT64 "x", u->pc + op->lval.sbyte);
break;
case 16:
mkasm(u, "0x" FMT64 "x", u->pc + op->lval.sword);
break;
case 32:
mkasm(u, "0x" FMT64 "x", u->pc + op->lval.sdword);
break;
default:break;
}
break;
case UD_OP_PTR:
switch (op->size) {
case 32:
mkasm(u, "word 0x%x:0x%x", op->lval.ptr.seg,
op->lval.ptr.off & 0xFFFF);
break;
case 48:
mkasm(u, "dword 0x%x:0x%lx", op->lval.ptr.seg,
op->lval.ptr.off);
break;
}
break;
case UD_OP_CONST:
if (syn_cast) opr_cast(u, op);
mkasm(u, "%d", op->lval.udword);
break;
default: return;
}
}
/* =============================================================================
* translates to intel syntax
* =============================================================================
*/
extern void ud_translate_intel(struct ud* u)
{
/* -- prefixes -- */
/* check if P_OSO prefix is used */
if (! P_OSO(u->itab_entry->prefix) && u->pfx_opr) {
switch (u->dis_mode) {
case 16:
mkasm(u, "o32 ");
break;
case 32:
case 64:
mkasm(u, "o16 ");
break;
}
}
/* check if P_ASO prefix was used */
if (! P_ASO(u->itab_entry->prefix) && u->pfx_adr) {
switch (u->dis_mode) {
case 16:
mkasm(u, "a32 ");
break;
case 32:
mkasm(u, "a16 ");
break;
case 64:
mkasm(u, "a32 ");
break;
}
}
if (u->pfx_lock)
mkasm(u, "lock ");
if (u->pfx_rep)
mkasm(u, "rep ");
if (u->pfx_repne)
mkasm(u, "repne ");
if (u->implicit_addr && u->pfx_seg)
mkasm(u, "%s ", ud_reg_tab[u->pfx_seg - UD_R_AL]);
/* print the instruction mnemonic */
mkasm(u, "%s ", ud_lookup_mnemonic(u->mnemonic));
/* operand 1 */
if (u->operand[0].type != UD_NONE) {
gen_operand(u, &u->operand[0], u->c1);
}
/* operand 2 */
if (u->operand[1].type != UD_NONE) {
mkasm(u, ", ");
gen_operand(u, &u->operand[1], u->c2);
}
/* operand 3 */
if (u->operand[2].type != UD_NONE) {
mkasm(u, ", ");
gen_operand(u, &u->operand[2], u->c3);
}
}