diff options
Diffstat (limited to 'opcodes')
| -rw-r--r-- | opcodes/ChangeLog | 7 | ||||
| -rw-r--r-- | opcodes/i386-dis.c | 12 |
2 files changed, 15 insertions, 4 deletions
diff --git a/opcodes/ChangeLog b/opcodes/ChangeLog index a839a68..9bfd67b 100644 --- a/opcodes/ChangeLog +++ b/opcodes/ChangeLog @@ -1,3 +1,10 @@ +2016-11-28 Ramiro Polla <ramiro@hex-rays.com> + Amit Pawar <amit.pawar@amd.com> + + PR binutils/20637 + * i386-dis.c (get_valid_dis386): Ignore REX_B for 32-bit XOP + instructions. + 2016-11-22 Ambrogino Modigliani <ambrogino.modigliani@gmail.com> * configure: Regenerate. diff --git a/opcodes/i386-dis.c b/opcodes/i386-dis.c index 5f49f91..ada4401 100644 --- a/opcodes/i386-dis.c +++ b/opcodes/i386-dis.c @@ -12670,11 +12670,15 @@ get_valid_dis386 (const struct dis386 *dp, disassemble_info *info) rex |= REX_W; vex.register_specifier = (~(*codep >> 3)) & 0xf; - if (address_mode != mode_64bit - && vex.register_specifier > 0x7) + if (address_mode != mode_64bit) { - dp = &bad_opcode; - return dp; + /* In 16/32-bit mode REX_B is silently ignored. */ + rex &= ~REX_B; + if (vex.register_specifier > 0x7) + { + dp = &bad_opcode; + return dp; + } } vex.length = (*codep & 0x4) ? 256 : 128; |