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X86: Add microops for reading/writing debug registers.

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This commit is contained in:
Gabe Black 2009-02-25 10:20:01 -08:00
parent 11fbed02ea
commit 28a35a6adb
2 changed files with 58 additions and 19 deletions
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36
src/arch/x86/isa/microops/regop.isa
View file

@ -923,6 +923,42 @@ let {{
class Zext(RegOp):
code = 'DestReg = bits(psrc1, op2, 0);'
class Rddr(RegOp):
def __init__(self, dest, src1, flags=None, dataSize="env.dataSize"):
super(Rddr, self).__init__(dest, \
src1, "NUM_INTREGS", flags, dataSize)
code = '''
CR4 cr4 = CR4Op;
DR7 dr7 = DR7Op;
if ((cr4.de == 1 && (src1 == 4 || src1 == 5)) || src1 >= 8) {
fault = new InvalidOpcode();
} else if (dr7.gd) {
fault = new DebugException();
} else {
DestReg = merge(DestReg, DebugSrc1, dataSize);
}
'''
class Wrdr(RegOp):
def __init__(self, dest, src1, flags=None, dataSize="env.dataSize"):
super(Wrdr, self).__init__(dest, \
src1, "NUM_INTREGS", flags, dataSize)
code = '''
CR4 cr4 = CR4Op;
DR7 dr7 = DR7Op;
if ((cr4.de == 1 && (dest == 4 || dest == 5)) || dest >= 8) {
fault = new InvalidOpcode();
} else if ((dest == 6 || dest == 7) &&
bits(psrc1, 63, 32) &&
machInst.mode.mode == LongMode) {
fault = new GeneralProtection(0);
} else if (dr7.gd) {
fault = new DebugException();
} else {
DebugDest = psrc1;
}
'''
class Rdcr(RegOp):
def __init__(self, dest, src1, flags=None, dataSize="env.dataSize"):
super(Rdcr, self).__init__(dest, \

41
src/arch/x86/isa/operands.isa
View file

@ -138,28 +138,31 @@ def operands {{
# original instruction.
'ControlDest': ('ControlReg', 'uqw', 'MISCREG_CR(dest)', (None, None, ['IsSerializeAfter','IsSerializing','IsNonSpeculative']), 100),
'ControlSrc1': ('ControlReg', 'uqw', 'MISCREG_CR(src1)', (None, None, ['IsSerializeAfter','IsSerializing','IsNonSpeculative']), 101),
'SegBaseDest': ('ControlReg', 'uqw', 'MISCREG_SEG_BASE(dest)', (None, None, ['IsSerializeAfter','IsSerializing','IsNonSpeculative']), 102),
'SegBaseSrc1': ('ControlReg', 'uqw', 'MISCREG_SEG_BASE(src1)', (None, None, ['IsSerializeAfter','IsSerializing','IsNonSpeculative']), 103),
'SegLimitDest': ('ControlReg', 'uqw', 'MISCREG_SEG_LIMIT(dest)', (None, None, ['IsSerializeAfter','IsSerializing','IsNonSpeculative']), 104),
'SegLimitSrc1': ('ControlReg', 'uqw', 'MISCREG_SEG_LIMIT(src1)', (None, None, ['IsSerializeAfter','IsSerializing','IsNonSpeculative']), 105),
'SegSelDest': ('ControlReg', 'uqw', 'MISCREG_SEG_SEL(dest)', (None, None, ['IsSerializeAfter','IsSerializing','IsNonSpeculative']), 106),
'SegSelSrc1': ('ControlReg', 'uqw', 'MISCREG_SEG_SEL(src1)', (None, None, ['IsSerializeAfter','IsSerializing','IsNonSpeculative']), 107),
'SegAttrDest': ('ControlReg', 'uqw', 'MISCREG_SEG_ATTR(dest)', (None, None, ['IsSerializeAfter','IsSerializing','IsNonSpeculative']), 108),
'SegAttrSrc1': ('ControlReg', 'uqw', 'MISCREG_SEG_ATTR(src1)', (None, None, ['IsSerializeAfter','IsSerializing','IsNonSpeculative']), 109),
'DebugDest': ('ControlReg', 'uqw', 'MISCREG_DR(dest)', (None, None, ['IsSerializeAfter','IsSerializing','IsNonSpeculative']), 102),
'DebugSrc1': ('ControlReg', 'uqw', 'MISCREG_DR(src1)', (None, None, ['IsSerializeAfter','IsSerializing','IsNonSpeculative']), 103),
'SegBaseDest': ('ControlReg', 'uqw', 'MISCREG_SEG_BASE(dest)', (None, None, ['IsSerializeAfter','IsSerializing','IsNonSpeculative']), 104),
'SegBaseSrc1': ('ControlReg', 'uqw', 'MISCREG_SEG_BASE(src1)', (None, None, ['IsSerializeAfter','IsSerializing','IsNonSpeculative']), 105),
'SegLimitDest': ('ControlReg', 'uqw', 'MISCREG_SEG_LIMIT(dest)', (None, None, ['IsSerializeAfter','IsSerializing','IsNonSpeculative']), 106),
'SegLimitSrc1': ('ControlReg', 'uqw', 'MISCREG_SEG_LIMIT(src1)', (None, None, ['IsSerializeAfter','IsSerializing','IsNonSpeculative']), 107),
'SegSelDest': ('ControlReg', 'uqw', 'MISCREG_SEG_SEL(dest)', (None, None, ['IsSerializeAfter','IsSerializing','IsNonSpeculative']), 108),
'SegSelSrc1': ('ControlReg', 'uqw', 'MISCREG_SEG_SEL(src1)', (None, None, ['IsSerializeAfter','IsSerializing','IsNonSpeculative']), 109),
'SegAttrDest': ('ControlReg', 'uqw', 'MISCREG_SEG_ATTR(dest)', (None, None, ['IsSerializeAfter','IsSerializing','IsNonSpeculative']), 110),
'SegAttrSrc1': ('ControlReg', 'uqw', 'MISCREG_SEG_ATTR(src1)', (None, None, ['IsSerializeAfter','IsSerializing','IsNonSpeculative']), 111),
# Operands to access specific control registers directly.
'EferOp': ('ControlReg', 'uqw', 'MISCREG_EFER', (None, None, ['IsSerializeAfter','IsSerializing','IsNonSpeculative']), 200),
'CR4Op': ('ControlReg', 'uqw', 'MISCREG_CR4', (None, None, ['IsSerializeAfter','IsSerializing','IsNonSpeculative']), 201),
'LDTRBase': ('ControlReg', 'uqw', 'MISCREG_TSL_BASE', (None, None, ['IsSerializeAfter','IsSerializing','IsNonSpeculative']), 202),
'LDTRLimit': ('ControlReg', 'uqw', 'MISCREG_TSL_LIMIT', (None, None, ['IsSerializeAfter','IsSerializing','IsNonSpeculative']), 203),
'LDTRSel': ('ControlReg', 'uqw', 'MISCREG_TSL', (None, None, ['IsSerializeAfter','IsSerializing','IsNonSpeculative']), 204),
'GDTRBase': ('ControlReg', 'uqw', 'MISCREG_TSG_BASE', (None, None, ['IsSerializeAfter','IsSerializing','IsNonSpeculative']), 205),
'GDTRLimit': ('ControlReg', 'uqw', 'MISCREG_TSG_LIMIT', (None, None, ['IsSerializeAfter','IsSerializing','IsNonSpeculative']), 206),
'CSBase': ('ControlReg', 'udw', 'MISCREG_CS_EFF_BASE', (None, None, ['IsSerializeAfter','IsSerializing','IsNonSpeculative']), 207),
'CSAttr': ('ControlReg', 'udw', 'MISCREG_CS_ATTR', (None, None, ['IsSerializeAfter','IsSerializing','IsNonSpeculative']), 208),
'MiscRegDest': ('ControlReg', 'uqw', 'dest', (None, None, ['IsSerializeAfter','IsSerializing','IsNonSpeculative']), 209),
'MiscRegSrc1': ('ControlReg', 'uqw', 'src1', (None, None, ['IsSerializeAfter','IsSerializing','IsNonSpeculative']), 210),
'TscOp': ('ControlReg', 'uqw', 'MISCREG_TSC', (None, None, ['IsSerializeAfter', 'IsSerializing', 'IsNonSpeculative']), 211),
'M5Reg': ('ControlReg', 'uqw', 'MISCREG_M5_REG', (None, None, None), 212),
'DR7Op': ('ControlReg', 'uqw', 'MISCREG_DR7', (None, None, ['IsSerializeAfter','IsSerializing','IsNonSpeculative']), 202),
'LDTRBase': ('ControlReg', 'uqw', 'MISCREG_TSL_BASE', (None, None, ['IsSerializeAfter','IsSerializing','IsNonSpeculative']), 203),
'LDTRLimit': ('ControlReg', 'uqw', 'MISCREG_TSL_LIMIT', (None, None, ['IsSerializeAfter','IsSerializing','IsNonSpeculative']), 204),
'LDTRSel': ('ControlReg', 'uqw', 'MISCREG_TSL', (None, None, ['IsSerializeAfter','IsSerializing','IsNonSpeculative']), 205),
'GDTRBase': ('ControlReg', 'uqw', 'MISCREG_TSG_BASE', (None, None, ['IsSerializeAfter','IsSerializing','IsNonSpeculative']), 206),
'GDTRLimit': ('ControlReg', 'uqw', 'MISCREG_TSG_LIMIT', (None, None, ['IsSerializeAfter','IsSerializing','IsNonSpeculative']), 207),
'CSBase': ('ControlReg', 'udw', 'MISCREG_CS_EFF_BASE', (None, None, ['IsSerializeAfter','IsSerializing','IsNonSpeculative']), 208),
'CSAttr': ('ControlReg', 'udw', 'MISCREG_CS_ATTR', (None, None, ['IsSerializeAfter','IsSerializing','IsNonSpeculative']), 209),
'MiscRegDest': ('ControlReg', 'uqw', 'dest', (None, None, ['IsSerializeAfter','IsSerializing','IsNonSpeculative']), 210),
'MiscRegSrc1': ('ControlReg', 'uqw', 'src1', (None, None, ['IsSerializeAfter','IsSerializing','IsNonSpeculative']), 211),
'TscOp': ('ControlReg', 'uqw', 'MISCREG_TSC', (None, None, ['IsSerializeAfter', 'IsSerializing', 'IsNonSpeculative']), 212),
'M5Reg': ('ControlReg', 'uqw', 'MISCREG_M5_REG', (None, None, None), 213),
'Mem': ('Mem', 'uqw', None, ('IsMemRef', 'IsLoad', 'IsStore'), 300)
}};