/* -----------------------------------------------------------------------------
* opr_cast() - Prints an operand cast.
* -----------------------------------------------------------------------------
*/
static void
opr_cast(struct ud* u, struct ud_operand* op)
{
switch(op->size) {
case 16 : case 32 :
mkasm(u, "*"); break;
default: break;
}
}
/* -----------------------------------------------------------------------------
* 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)
{
switch(op->type) {
case UD_OP_REG:
mkasm(u, "%%%s", ud_reg_tab[op->base - UD_R_AL]);
break;
case UD_OP_MEM:
if (u->br_far) opr_cast(u, op);
if (u->pfx_seg)
mkasm(u, "%%%s:", ud_reg_tab[u->pfx_seg - UD_R_AL]);
if (op->offset == 8) {
if (op->lval.sbyte < 0)
mkasm(u, "-0x%x", (-op->lval.sbyte) & 0xff);
else mkasm(u, "0x%x", op->lval.sbyte);
}
else if (op->offset == 16)
mkasm(u, "0x%x", op->lval.uword);
else if (op->offset == 32)
mkasm(u, "0x%lx", op->lval.udword);
else if (op->offset == 64)
mkasm(u, "0x" FMT64 "x", op->lval.uqword);
if (op->base)
mkasm(u, "(%%%s", ud_reg_tab[op->base - UD_R_AL]);
if (op->index) {
if (op->base)
mkasm(u, ",");
else mkasm(u, "(");
mkasm(u, "%%%s", ud_reg_tab[op->index - UD_R_AL]);
}
if (op->scale)
mkasm(u, ",%d", op->scale);
if (op->base || op->index)
mkasm(u, ")");
break;
case UD_OP_IMM:
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:
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, "$0x%x, $0x%x", op->lval.ptr.seg,
op->lval.ptr.off & 0xFFFF);
break;
case 48:
mkasm(u, "$0x%x, $0x%lx", op->lval.ptr.seg,
op->lval.ptr.off);
break;
}
break;
default:
return;
}
}
/* =============================================================================
* translates to AT&T syntax
* =============================================================================
*/
extern void
ud_translate_att(struct ud *u)
{
int size = 0;
/* check if P_O32 prefix is used */
if (! P_O32(u->mapen->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_A32 prefix was used */
if (! P_A32(u->mapen->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 ");
/* special instructions */
switch (u->mnemonic) {
case UD_Iretf:
mkasm(u, "lret ");
break;
case UD_Idb:
mkasm(u, ".byte 0x%x", u->operand[0].lval.ubyte);
return;
case UD_Ijmp:
case UD_Icall:
if (u->br_far) mkasm(u, "l");
mkasm(u, "%s", ud_lookup_mnemonic(u->mnemonic));
break;
case UD_Ibound:
case UD_Ienter:
if (u->operand[0].type != UD_NONE)
gen_operand(u, &u->operand[0]);
if (u->operand[1].type != UD_NONE) {
mkasm(u, ",");
gen_operand(u, &u->operand[1]);
}
return;
default:
mkasm(u, "%s", ud_lookup_mnemonic(u->mnemonic));
}
if (u->c1)
size = u->operand[0].size;
else if (u->c2)
size = u->operand[1].size;
else if (u->c3)
size = u->operand[2].size;
if (size == 8)
mkasm(u, "b");
else if (size == 16)
mkasm(u, "w");
else if (size == 64)
mkasm(u, "q");
mkasm(u, " ");
if (u->operand[2].type != UD_NONE) {
gen_operand(u, &u->operand[2]);
mkasm(u, ", ");
}
if (u->operand[1].type != UD_NONE) {
gen_operand(u, &u->operand[1]);
mkasm(u, ", ");
}
if (u->operand[0].type != UD_NONE)
gen_operand(u, &u->operand[0]);
}
/* -----------------------------------------------------------------------------
* 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: {
int64_t imm = 0;
uint64_t sext_mask = 0xffffffffffffffffull;
unsigned sext_size = op->size;
if (syn_cast)
opr_cast(u, op);
switch (op->size) {
case 8: imm = op->lval.sbyte; break;
case 16: imm = op->lval.sword; break;
case 32: imm = op->lval.sdword; break;
case 64: imm = op->lval.sqword; break;
}
if ( P_SEXT( u->itab_entry->prefix ) ) {
sext_size = u->operand[ 0 ].size;
if ( u->mnemonic == UD_Ipush )
/* push sign-extends to operand size */
sext_size = u->opr_mode;
}
if ( sext_size < 64 )
sext_mask = ( 1ull << sext_size ) - 1;
mkasm( u, "0x" FMT64 "x", imm & sext_mask );
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 ) & 0xffff );
break;
case 32:
mkasm(u, "0x" FMT64 "x", ( u->pc + op->lval.sdword ) & 0xfffffffful );
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_seg &&
u->operand[0].type != UD_OP_MEM &&
u->operand[1].type != UD_OP_MEM ) {
mkasm(u, "%s ", ud_reg_tab[u->pfx_seg - UD_R_AL]);
}
if (u->pfx_lock)
mkasm(u, "lock ");
if (u->pfx_rep)
mkasm(u, "rep ");
if (u->pfx_repne)
mkasm(u, "repne ");
/* print the instruction mnemonic */
mkasm(u, "%s ", ud_lookup_mnemonic(u->mnemonic));
/* operand 1 */
if (u->operand[0].type != UD_NONE) {
int cast = 0;
if ( u->operand[0].type == UD_OP_IMM &&
u->operand[1].type == UD_NONE )
cast = u->c1;
if ( u->operand[0].type == UD_OP_MEM ) {
cast = u->c1;
if ( u->operand[1].type == UD_OP_IMM ||
u->operand[1].type == UD_OP_CONST )
cast = 1;
if ( u->operand[1].type == UD_NONE )
cast = 1;
if ( ( u->operand[0].size != u->operand[1].size ) && u->operand[1].size )
cast = 1;
} else if ( u->operand[ 0 ].type == UD_OP_JIMM ) {
if ( u->operand[ 0 ].size > 8 ) cast = 1;
}
gen_operand(u, &u->operand[0], cast);
}
/* operand 2 */
if (u->operand[1].type != UD_NONE) {
int cast = 0;
mkasm(u, ", ");
if ( u->operand[1].type == UD_OP_MEM ) {
cast = u->c1;
if ( u->operand[0].type != UD_OP_REG )
cast = 1;
if ( u->operand[0].size != u->operand[1].size && u->operand[1].size )
cast = 1;
if ( u->operand[0].type == UD_OP_REG &&
u->operand[0].base >= UD_R_ES &&
u->operand[0].base <= UD_R_GS )
cast = 0;
}
gen_operand(u, &u->operand[1], cast );
}
/* operand 3 */
if (u->operand[2].type != UD_NONE) {
mkasm(u, ", ");
gen_operand(u, &u->operand[2], u->c3);
}
}
/* -----------------------------------------------------------------------------
* gen_operand() - Generates assembly output for each operand.
* -----------------------------------------------------------------------------
*/
static void
gen_operand(struct ud* u, struct ud_operand* op)
{
switch(op->type) {
case UD_OP_REG:
mkasm(u, "%%%s", ud_reg_tab[op->base - UD_R_AL]);
break;
case UD_OP_MEM:
if (u->br_far) opr_cast(u, op);
if (u->pfx_seg)
mkasm(u, "%%%s:", ud_reg_tab[u->pfx_seg - UD_R_AL]);
if (op->offset == 8) {
if (op->lval.sbyte < 0)
mkasm(u, "-0x%x", (-op->lval.sbyte) & 0xff);
else
mkasm(u, "0x%x", op->lval.sbyte);
}
else if (op->offset == 16) {
if (op->lval.sword < 0)
mkasm(u, "-0x%x", (-op->lval.sword) & 0xffff);
else
mkasm(u, "0x%x", op->lval.sword);
} else if (op->offset == 32) {
if (op->lval.sdword < 0)
mkasm(u, "-0x%x", (-op->lval.sdword) & 0xffffffff);
else
mkasm(u, "0x%x", op->lval.sdword);
} else if (op->offset == 64) {
if (op->lval.sdword < 0)
mkasm(u, "-0x" FMT64 "x", (uint64_t)-op->lval.sqword);
else
mkasm(u, "0x" FMT64 "x", (uint64_t)op->lval.sqword);
}
if (op->base)
mkasm(u, "(%%%s", ud_reg_tab[op->base - UD_R_AL]);
if (op->index) {
if (op->base)
mkasm(u, ",");
else mkasm(u, "(");
mkasm(u, "%%%s", ud_reg_tab[op->index - UD_R_AL]);
}
if (op->scale)
mkasm(u, ",%d", op->scale);
if (op->base || op->index)
mkasm(u, ")");
break;
case UD_OP_IMM: {
int64_t imm = 0;
uint64_t sext_mask = 0xffffffffffffffffull;
unsigned sext_size = op->size;
switch (op->size) {
case 8: imm = op->lval.sbyte; break;
case 16: imm = op->lval.sword; break;
case 32: imm = op->lval.sdword; break;
case 64: imm = op->lval.sqword; break;
}
if ( P_SEXT( u->itab_entry->prefix ) ) {
sext_size = u->operand[ 0 ].size;
if ( u->mnemonic == UD_Ipush )
/* push sign-extends to operand size */
sext_size = u->opr_mode;
}
if ( sext_size < 64 )
sext_mask = ( 1ull << sext_size ) - 1;
mkasm( u, "$0x" FMT64 "x", (uint64_t)(imm & sext_mask) );
break;
}
case UD_OP_JIMM:
switch (op->size) {
case 8:
mkasm(u, "0x" FMT64 "x", (uint64_t)(u->pc + op->lval.sbyte));
break;
case 16:
mkasm(u, "0x" FMT64 "x", (uint64_t)((u->pc + op->lval.sword) & 0xffff) );
break;
case 32:
if (u->dis_mode == 32)
mkasm(u, "0x" FMT64 "x", (uint64_t)((u->pc + op->lval.sdword) & 0xffffffff));
else
mkasm(u, "0x" FMT64 "x", (uint64_t)(u->pc + op->lval.sdword));
break;
default:break;
}
break;
case UD_OP_PTR:
switch (op->size) {
case 32:
mkasm(u, "$0x%x, $0x%x", op->lval.ptr.seg,
op->lval.ptr.off & 0xFFFF);
break;
case 48:
mkasm(u, "$0x%x, $0x%lx", op->lval.ptr.seg,
(unsigned long)op->lval.ptr.off);
break;
}
break;
default: return;
}
}
/* -----------------------------------------------------------------------------
* 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);
}
}
/* =============================================================================
* translates to AT&T syntax
* =============================================================================
*/
extern void
ud_translate_att(struct ud *u)
{
int size = 0;
if (u->pfx_lock)
mkasm(u, "lock ");
if (u->pfx_rep)
mkasm(u, "rep ");
if (u->pfx_repne)
mkasm(u, "repne ");
/* special instructions */
switch (u->mnemonic) {
case UD_Iretf:
mkasm(u, "lret ");
break;
case UD_Idb:
mkasm(u, ".byte 0x%x", u->operand[0].lval.ubyte);
return;
case UD_Ijmp:
case UD_Icall:
if (u->br_far) mkasm(u, "l");
mkasm(u, "%s", ud_lookup_mnemonic(u->mnemonic));
break;
case UD_Ibound:
case UD_Ienter:
if (u->operand[0].type != UD_NONE)
gen_operand(u, &u->operand[0]);
if (u->operand[1].type != UD_NONE) {
mkasm(u, ",");
gen_operand(u, &u->operand[1]);
}
return;
default:
mkasm(u, "%s", ud_lookup_mnemonic(u->mnemonic));
}
if (u->c1)
size = u->operand[0].size;
else if (u->c2)
size = u->operand[1].size;
else if (u->c3)
size = u->operand[2].size;
if (size == 8)
mkasm(u, "b");
else if (size == 16)
mkasm(u, "w");
else if (size == 64)
mkasm(u, "q");
mkasm(u, " ");
if (u->operand[2].type != UD_NONE) {
gen_operand(u, &u->operand[2]);
mkasm(u, ", ");
}
if (u->operand[1].type != UD_NONE) {
gen_operand(u, &u->operand[1]);
mkasm(u, ", ");
}
if (u->operand[0].type != UD_NONE)
gen_operand(u, &u->operand[0]);
}
