From da6f343032cb01597dc7866e66f091adf3243a62 Mon Sep 17 00:00:00 2001 From: Michael Smith Date: Sat, 20 Nov 2021 03:10:50 +0000 Subject: Initial public snapshot With code from Bill. Thanks Bill! --- src/3p/udis86/syn-att.c | 228 ++++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 228 insertions(+) create mode 100644 src/3p/udis86/syn-att.c (limited to 'src/3p/udis86/syn-att.c') diff --git a/src/3p/udis86/syn-att.c b/src/3p/udis86/syn-att.c new file mode 100644 index 0000000..d1ba89b --- /dev/null +++ b/src/3p/udis86/syn-att.c @@ -0,0 +1,228 @@ +/* udis86 - libudis86/syn-att.c + * + * Copyright (c) 2002-2009 Vivek Thampi + * All rights reserved. + * + * Redistribution and use in source and binary forms, with or without modification, + * are permitted provided that the following conditions are met: + * + * * Redistributions of source code must retain the above copyright notice, + * this list of conditions and the following disclaimer. + * * Redistributions in binary form must reproduce the above copyright notice, + * this list of conditions and the following disclaimer in the documentation + * and/or other materials provided with the distribution. + * + * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND + * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED + * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE + * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR + * ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES + * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; + * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON + * ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT + * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS + * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. + */ +#include "types.h" +#include "extern.h" +#include "decode.h" +#include "itab.h" +#include "syn.h" +#include "udint.h" + +/* ----------------------------------------------------------------------------- + * opr_cast() - Prints an operand cast. + * ----------------------------------------------------------------------------- + */ +static void +opr_cast(struct ud* u, struct ud_operand* op) +{ + switch(op->size) { + case 16 : case 32 : + ud_asmprintf(u, "*"); break; + default: break; + } +} + +/* ----------------------------------------------------------------------------- + * 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_CONST: + ud_asmprintf(u, "$0x%x", op->lval.udword); + break; + + case UD_OP_REG: + ud_asmprintf(u, "%%%s", ud_reg_tab[op->base - UD_R_AL]); + break; + + case UD_OP_MEM: + if (u->br_far) { + opr_cast(u, op); + } + if (u->pfx_seg) { + ud_asmprintf(u, "%%%s:", ud_reg_tab[u->pfx_seg - UD_R_AL]); + } + if (op->offset != 0) { + ud_syn_print_mem_disp(u, op, 0); + } + if (op->base) { + ud_asmprintf(u, "(%%%s", ud_reg_tab[op->base - UD_R_AL]); + } + if (op->index) { + if (op->base) { + ud_asmprintf(u, ","); + } else { + ud_asmprintf(u, "("); + } + ud_asmprintf(u, "%%%s", ud_reg_tab[op->index - UD_R_AL]); + } + if (op->scale) { + ud_asmprintf(u, ",%d", op->scale); + } + if (op->base || op->index) { + ud_asmprintf(u, ")"); + } + break; + + case UD_OP_IMM: + ud_asmprintf(u, "$"); + ud_syn_print_imm(u, op); + break; + + case UD_OP_JIMM: + ud_syn_print_addr(u, ud_syn_rel_target(u, op)); + break; + + case UD_OP_PTR: + switch (op->size) { + case 32: + ud_asmprintf(u, "$0x%x, $0x%x", op->lval.ptr.seg, + op->lval.ptr.off & 0xFFFF); + break; + case 48: + ud_asmprintf(u, "$0x%x, $0x%x", 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; + int star = 0; + + /* check if P_OSO prefix is used */ + if (! P_OSO(u->itab_entry->prefix) && u->pfx_opr) { + switch (u->dis_mode) { + case 16: + ud_asmprintf(u, "o32 "); + break; + case 32: + case 64: + ud_asmprintf(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: + ud_asmprintf(u, "a32 "); + break; + case 32: + ud_asmprintf(u, "a16 "); + break; + case 64: + ud_asmprintf(u, "a32 "); + break; + } + } + + if (u->pfx_lock) + ud_asmprintf(u, "lock "); + if (u->pfx_rep) { + ud_asmprintf(u, "rep "); + } else if (u->pfx_repe) { + ud_asmprintf(u, "repe "); + } else if (u->pfx_repne) { + ud_asmprintf(u, "repne "); + } + + /* special instructions */ + switch (u->mnemonic) { + case UD_Iretf: + ud_asmprintf(u, "lret "); + break; + case UD_Idb: + ud_asmprintf(u, ".byte 0x%x", u->operand[0].lval.ubyte); + return; + case UD_Ijmp: + case UD_Icall: + if (u->br_far) ud_asmprintf(u, "l"); + if (u->operand[0].type == UD_OP_REG) { + star = 1; + } + ud_asmprintf(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) { + ud_asmprintf(u, ","); + gen_operand(u, &u->operand[1]); + } + return; + default: + ud_asmprintf(u, "%s", ud_lookup_mnemonic(u->mnemonic)); + } + + if (size == 8) { + ud_asmprintf(u, "b"); + } else if (size == 16) { + ud_asmprintf(u, "w"); + } else if (size == 64) { + ud_asmprintf(u, "q"); + } + + if (star) { + ud_asmprintf(u, " *"); + } else { + ud_asmprintf(u, " "); + } + + if (u->operand[3].type != UD_NONE) { + gen_operand(u, &u->operand[3]); + ud_asmprintf(u, ", "); + } + if (u->operand[2].type != UD_NONE) { + gen_operand(u, &u->operand[2]); + ud_asmprintf(u, ", "); + } + if (u->operand[1].type != UD_NONE) { + gen_operand(u, &u->operand[1]); + ud_asmprintf(u, ", "); + } + if (u->operand[0].type != UD_NONE) { + gen_operand(u, &u->operand[0]); + } +} + +/* +vim: set ts=2 sw=2 expandtab +*/ -- cgit v1.2.3