xref: /gem5/src/arch/x86/isa/insts/general_purpose/flags/set_and_clear.py

# Copyright (c) 2007-2008 The Hewlett-Packard Development Company
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#
# The license below extends only to copyright in the software and shall
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# property including but not limited to intellectual property relating
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# licensed hereunder.  You may use the software subject to the license
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# modified or unmodified, in source code or in binary form.
#
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# modification, are permitted provided that the following conditions are
# met: redistributions of source code must retain the above copyright
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# redistributions in binary form must reproduce the above copyright
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# neither the name of the copyright holders nor the names of its
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# this software without specific prior written permission.
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# Authors: Gabe Black

microcode = '''
def macroop CLD {
    ruflags t1
    limm t2, "~((uint64_t)DFBit)", dataSize=8
    and t1, t1, t2
    wruflags t1, t0
};

def macroop STD {
    ruflags t1
    limm t2, "DFBit", dataSize=8
    or t1, t1, t2
    wruflags t1, t0
};

def macroop CLC {
    ruflags t1
    andi t2, t1, "CFBit"
    wruflags t1, t2
};

def macroop STC {
    ruflags t1
    ori t1, t1, "CFBit"
    wruflags t1, t0
};

def macroop CMC {
    ruflags t1
    wruflagsi t1, "CFBit"
};

def macroop STI {
    rflags t1
    limm t2, "IFBit", dataSize=8
    or t1, t1, t2
    wrflags t1, t0
};

def macroop CLI {
    rflags t1
    limm t2, "~IFBit", dataSize=8
    and t1, t1, t2
    wrflags t1, t0
};
'''