diff options
Diffstat (limited to 'lib/Target/X86/X86InstrInfo.h')
| -rw-r--r-- | lib/Target/X86/X86InstrInfo.h | 18 |
1 files changed, 11 insertions, 7 deletions
diff --git a/lib/Target/X86/X86InstrInfo.h b/lib/Target/X86/X86InstrInfo.h index 98f9fe68d7..c6e3b76176 100644 --- a/lib/Target/X86/X86InstrInfo.h +++ b/lib/Target/X86/X86InstrInfo.h @@ -86,9 +86,9 @@ namespace X86II { OpSize = 1 << 5, // Op0Mask - There are several prefix bytes that are used to form two byte - // opcodes. These are currently 0x0F, and 0xD8-0xDF. This mask is used to - // obtain the setting of this field. If no bits in this field is set, there - // is no prefix byte for obtaining a multibyte opcode. + // opcodes. These are currently 0x0F, 0xF3, and 0xD8-0xDF. This mask is + // used to obtain the setting of this field. If no bits in this field is + // set, there is no prefix byte for obtaining a multibyte opcode. // Op0Shift = 6, Op0Mask = 0xF << Op0Shift, @@ -97,12 +97,16 @@ namespace X86II { // starts with a 0x0F byte before the real opcode. TB = 1 << Op0Shift, + // REP - The 0xF3 prefix byte indicating repetition of the following + // instruction. + REP = 2 << Op0Shift, + // D8-DF - These escape opcodes are used by the floating point unit. These // values must remain sequential. - D8 = 2 << Op0Shift, D9 = 3 << Op0Shift, - DA = 4 << Op0Shift, DB = 5 << Op0Shift, - DC = 6 << Op0Shift, DD = 7 << Op0Shift, - DE = 8 << Op0Shift, DF = 9 << Op0Shift, + D8 = 3 << Op0Shift, D9 = 4 << Op0Shift, + DA = 5 << Op0Shift, DB = 6 << Op0Shift, + DC = 7 << Op0Shift, DD = 8 << Op0Shift, + DE = 9 << Op0Shift, DF = 10 << Op0Shift, //===------------------------------------------------------------------===// // This three-bit field describes the size of a memory operand. Zero is |