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| author | Jan Beulich <jbeulich@novell.com> | 2017-02-23 11:03:55 +0100 |
|---|---|---|
| committer | Jan Beulich <jbeulich@suse.com> | 2017-02-23 11:03:55 +0100 |
| commit | 53c4d625d70138fb5b75f0e2ebae8ff363ed3d46 (patch) | |
| tree | a56c69435670815673b2464cd51a406fb2d32f96 | |
| parent | 4c5b8d1e01195f5c11048d99d71f39ddb5449f12 (diff) | |
| download | gdb-53c4d625d70138fb5b75f0e2ebae8ff363ed3d46.zip gdb-53c4d625d70138fb5b75f0e2ebae8ff363ed3d46.tar.gz gdb-53c4d625d70138fb5b75f0e2ebae8ff363ed3d46.tar.bz2 | |
x86: drop stray VEX opcode 82 references
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.
| -rw-r--r-- | opcodes/ChangeLog | 5 | ||||
| -rw-r--r-- | opcodes/i386-dis.c | 8 |
2 files changed, 9 insertions, 4 deletions
diff --git a/opcodes/ChangeLog b/opcodes/ChangeLog index 234b58b..ca2cf0e 100644 --- a/opcodes/ChangeLog +++ b/opcodes/ChangeLog @@ -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 diff --git a/opcodes/i386-dis.c b/opcodes/i386-dis.c index 97a18ba..108f0e3 100644 --- a/opcodes/i386-dis.c +++ b/opcodes/i386-dis.c @@ -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; |