1 /* udis86 - libudis86/syn-att.c
3 * Copyright (c) 2002-2009 Vivek Thampi
6 * Redistribution and use in source and binary forms, with or without modification,
7 * are permitted provided that the following conditions are met:
9 * * Redistributions of source code must retain the above copyright notice,
10 * this list of conditions and the following disclaimer.
11 * * Redistributions in binary form must reproduce the above copyright notice,
12 * this list of conditions and the following disclaimer in the documentation
13 * and/or other materials provided with the distribution.
15 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND
16 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
17 * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
18 * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR
19 * ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
20 * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
21 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON
22 * ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
23 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
24 * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
32 /* -----------------------------------------------------------------------------
33 * opr_cast() - Prints an operand cast.
34 * -----------------------------------------------------------------------------
37 opr_cast(struct ud* u, struct ud_operand* op)
46 /* -----------------------------------------------------------------------------
47 * gen_operand() - Generates assembly output for each operand.
48 * -----------------------------------------------------------------------------
51 gen_operand(struct ud* u, struct ud_operand* op)
55 mkasm(u, "%%%s", ud_reg_tab[op->base - UD_R_AL]);
59 if (u->br_far) opr_cast(u, op);
61 mkasm(u, "%%%s:", ud_reg_tab[u->pfx_seg - UD_R_AL]);
62 if (op->offset == 8) {
63 if (op->lval.sbyte < 0)
64 mkasm(u, "-0x%x", (-op->lval.sbyte) & 0xff);
65 else mkasm(u, "0x%x", op->lval.sbyte);
67 else if (op->offset == 16)
68 mkasm(u, "0x%x", op->lval.uword);
69 else if (op->offset == 32)
70 mkasm(u, "0x%lx", op->lval.udword);
71 else if (op->offset == 64)
72 mkasm(u, "0x" FMT64 "x", op->lval.uqword);
75 mkasm(u, "(%%%s", ud_reg_tab[op->base - UD_R_AL]);
80 mkasm(u, "%%%s", ud_reg_tab[op->index - UD_R_AL]);
83 mkasm(u, ",%d", op->scale);
84 if (op->base || op->index)
90 case 8: mkasm(u, "$0x%x", op->lval.ubyte); break;
91 case 16: mkasm(u, "$0x%x", op->lval.uword); break;
92 case 32: mkasm(u, "$0x%lx", op->lval.udword); break;
93 case 64: mkasm(u, "$0x" FMT64 "x", op->lval.uqword); break;
101 mkasm(u, "0x" FMT64 "x", u->pc + op->lval.sbyte);
104 mkasm(u, "0x" FMT64 "x", u->pc + op->lval.sword);
107 mkasm(u, "0x" FMT64 "x", u->pc + op->lval.sdword);
116 mkasm(u, "$0x%x, $0x%x", op->lval.ptr.seg,
117 op->lval.ptr.off & 0xFFFF);
120 mkasm(u, "$0x%x, $0x%lx", op->lval.ptr.seg,
130 /* =============================================================================
131 * translates to AT&T syntax
132 * =============================================================================
135 ud_translate_att(struct ud *u)
139 /* check if P_OSO prefix is used */
140 if (! P_OSO(u->itab_entry->prefix) && u->pfx_opr) {
141 switch (u->dis_mode) {
152 /* check if P_ASO prefix was used */
153 if (! P_ASO(u->itab_entry->prefix) && u->pfx_adr) {
154 switch (u->dis_mode) {
174 /* special instructions */
175 switch (u->mnemonic) {
180 mkasm(u, ".byte 0x%x", u->operand[0].lval.ubyte);
184 if (u->br_far) mkasm(u, "l");
185 mkasm(u, "%s", ud_lookup_mnemonic(u->mnemonic));
189 if (u->operand[0].type != UD_NONE)
190 gen_operand(u, &u->operand[0]);
191 if (u->operand[1].type != UD_NONE) {
193 gen_operand(u, &u->operand[1]);
197 mkasm(u, "%s", ud_lookup_mnemonic(u->mnemonic));
201 size = u->operand[0].size;
203 size = u->operand[1].size;
205 size = u->operand[2].size;
216 if (u->operand[2].type != UD_NONE) {
217 gen_operand(u, &u->operand[2]);
221 if (u->operand[1].type != UD_NONE) {
222 gen_operand(u, &u->operand[1]);
226 if (u->operand[0].type != UD_NONE)
227 gen_operand(u, &u->operand[0]);