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[deliverable/binutils-gdb.git] / opcodes / i386-dis.c

diff --git a/opcodes/i386-dis.c b/opcodes/i386-dis.c
index a4e16cb6154836c97db8f6055019a66c18355c85..9834098ea552a1d975fc334dd3ea9a7d4223be04 100644 (file)
--- a/opcodes/i386-dis.c
+++ b/opcodes/i386-dis.c
@@ -1,6 +1,6 @@
 /* Print i386 instructions for GDB, the GNU debugger.
    Copyright 1988, 1989, 1991, 1993, 1994, 1995, 1996, 1997, 1998, 1999,
-   2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009, 2010
+   2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009, 2010, 2011
    Free Software Foundation, Inc.
 
    This file is part of the GNU opcodes library.
@@ -252,6 +252,7 @@ fetch_data (struct disassemble_info *info, bfd_byte *addr)
 #define Rm { OP_R, m_mode }
 #define Ib { OP_I, b_mode }
 #define sIb { OP_sI, b_mode }  /* sign extened byte */
+#define sIbT { OP_sI, b_T_mode } /* sign extened byte like 'T' */
 #define Iv { OP_I, v_mode }
 #define sIv { OP_sI, v_mode } 
 #define Iq { OP_I, q_mode }
@@ -414,6 +415,8 @@ enum
   b_mode = 1,
   /* byte operand with operand swapped */
   b_swap_mode,
+  /* byte operand, sign extend like 'T' suffix */
+  b_T_mode,
   /* operand size depends on prefixes */
   v_mode,
   /* operand size depends on prefixes with operand swapped */
@@ -1790,7 +1793,7 @@ static const struct dis386 dis386[] = {
   /* 68 */
   { "pushT",           { sIv } },
   { "imulS",           { Gv, Ev, Iv } },
-  { "pushT",           { sIb } },
+  { "pushT",           { sIbT } },
   { "imulS",           { Gv, Ev, sIb } },
   { "ins{b|}",         { Ybr, indirDX } },
   { X86_64_TABLE (X86_64_6D) },
@@ -5544,12 +5547,12 @@ static const struct dis386 x86_64_table[][2] = {
 
   /* X86_64_D4 */
   {
-    { "aam", { sIb } },
+    { "aam", { Ib } },
   },
 
   /* X86_64_D5 */
   {
-    { "aad", { sIb } },
+    { "aad", { Ib } },
   },
 
   /* X86_64_EA */
@@ -11699,9 +11702,9 @@ print_insn (bfd_vma pc, disassemble_info *info)
       modrm.rm = *codep & 7;
     }
 
-   need_vex = 0;
-   need_vex_reg = 0;
-   vex_w_done = 0;
+  need_vex = 0;
+  need_vex_reg = 0;
+  vex_w_done = 0;
 
   if (dp->name == NULL && dp->op[0].bytemode == FLOATCODE)
     {
@@ -13731,10 +13734,32 @@ OP_sI (int bytemode, int sizeflag)
   switch (bytemode)
     {
     case b_mode:
+    case b_T_mode:
       FETCH_DATA (the_info, codep + 1);
       op = *codep++;
       if ((op & 0x80) != 0)
        op -= 0x100;
+      if (bytemode == b_T_mode)
+       {
+         if (address_mode != mode_64bit
+             || !(sizeflag & DFLAG))
+           {
+             if (sizeflag & DFLAG)
+               op &= 0xffffffff;
+             else
+               op &= 0xffff;
+         }
+       }
+      else
+       {
+         if (!(rex & REX_W))
+           {
+             if (sizeflag & DFLAG)
+               op &= 0xffffffff;
+             else
+               op &= 0xffff;
+           }
+       }
       break;
     case v_mode:
       if (sizeflag & DFLAG)
@@ -13792,7 +13817,7 @@ OP_J (int bytemode, int sizeflag)
       oappend (INTERNAL_DISASSEMBLER_ERROR);
       return;
     }
-  disp = ((start_pc + codep - start_codep + disp) & mask) | segment;
+  disp = ((start_pc + (codep - start_codep) + disp) & mask) | segment;
   set_op (disp, 0);
   print_operand_value (scratchbuf, 1, disp);
   oappend (scratchbuf);