#BEGIN_LEGAL
#
#Copyright (c) 2019 Intel Corporation
#
#  Licensed under the Apache License, Version 2.0 (the "License");
#  you may not use this file except in compliance with the License.
#  You may obtain a copy of the License at
#
#      http://www.apache.org/licenses/LICENSE-2.0
#
#  Unless required by applicable law or agreed to in writing, software
#  distributed under the License is distributed on an "AS IS" BASIS,
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#END_LEGAL
INSTRUCTIONS()::

{
ICLASS    : TZCNT  
CPL       : 3
CATEGORY  : BMI1
EXTENSION : BMI1
FLAGS     : MUST [ of-u sf-u zf-mod af-u pf-u cf-mod ]
PATTERN   : 0x0F 0xBC refining_f3  TZCNT=1 MOD[mm] MOD!=3 REG[rrr] RM[nnn] MODRM()
OPERANDS  : REG0=GPRv_R():w MEM0:r:v

PATTERN   : 0x0F 0xBC refining_f3 TZCNT=1 MOD[0b11] MOD=3 REG[rrr] RM[nnn]
OPERANDS  : REG0=GPRv_R():w  REG1=GPRv_B():r
}

{
ICLASS    : BSF
VERSION   : 1
COMMENT   : AMD reused 0FBC for TZCNT and made BSF not have a refining prefix.  This version replaces the normal version of BSF
CPL       : 3
CATEGORY  : BITBYTE
EXTENSION : BASE
ISA_SET   : I386
FLAGS     : MUST [ of-u sf-u zf-mod af-u pf-u cf-u ]

PATTERN   : 0x0F 0xBC not_refining_f3 MOD[mm] MOD!=3 REG[rrr] RM[nnn] MODRM()
OPERANDS  : REG0=GPRv_R():cw MEM0:r:v

PATTERN   : 0x0F 0xBC not_refining_f3 MOD[0b11] MOD=3 REG[rrr] RM[nnn]
OPERANDS  : REG0=GPRv_R():cw REG1=GPRv_B():r

PATTERN   : 0x0F 0xBC refining_f3 TZCNT=0 MOD[mm] MOD!=3 REG[rrr] RM[nnn] MODRM()
OPERANDS  : REG0=GPRv_R():cw MEM0:r:v

PATTERN   : 0x0F 0xBC refining_f3 TZCNT=0 MOD[0b11] MOD=3 REG[rrr] RM[nnn]
OPERANDS  : REG0=GPRv_R():cw REG1=GPRv_B():r
}