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x86: drop stray VEX opcode 82 references

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No such ModR/M-less opcode has ever existed in public documentation
afaict, so I can't see why it had been added in the first place.
Furthermore opcode 77 is special only with implied prefix 0F.
This commit is contained in:
Jan Beulich 2017-02-23 11:03:55 +01:00 committed by Jan Beulich
parent 4c5b8d1e01
commit 53c4d625d7
2 changed files with 9 additions and 4 deletions
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5
opcodes/ChangeLog
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@ -1,3 +1,8 @@
2017-02-23 Jan Beulich <jbeulich@suse.com>
* i386-dis.c (get_valid_dis386): Don't special case VEX opcode
82. For 3-byte VEX only special case opcode 77 in VEX_0F space.
2017-02-21 Jan Beulich <jbeulich@suse.com>
* aarch64-asm.c (convert_bfc_to_bfm): Copy operand 0 to operand

8
opcodes/i386-dis.c
View File

@ -12771,8 +12771,8 @@ get_valid_dis386 (const struct dis386 *dp, disassemble_info *info)
vindex = *codep++;
dp = &vex_table[vex_table_index][vindex];
end_codep = codep;
/* There is no MODRM byte for VEX [82|77]. */
if (vindex != 0x77 && vindex != 0x82)
/* There is no MODRM byte for VEX0F 77. */
if (vex_table_index != VEX_0F || vindex != 0x77)
{
FETCH_DATA (info, codep + 1);
modrm.mod = (*codep >> 6) & 3;
@ -12814,8 +12814,8 @@ get_valid_dis386 (const struct dis386 *dp, disassemble_info *info)
vindex = *codep++;
dp = &vex_table[dp->op[1].bytemode][vindex];
end_codep = codep;
/* There is no MODRM byte for VEX [82|77]. */
if (vindex != 0x77 && vindex != 0x82)
/* There is no MODRM byte for VEX 77. */
if (vindex != 0x77)
{
FETCH_DATA (info, codep + 1);
modrm.mod = (*codep >> 6) & 3;