Update mach_override to upstream 1a1bb352

third_party/mach_override/libudis86/syn-att.c

+/* 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_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_rep) {
+    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[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
+*/