summaryrefslogtreecommitdiff
path: root/src/arch/x86/isa
diff options
context:
space:
mode:
Diffstat (limited to 'src/arch/x86/isa')
-rw-r--r--src/arch/x86/isa/insts/logical.py48
-rw-r--r--src/arch/x86/isa/microops/regop.isa59
2 files changed, 62 insertions, 45 deletions
diff --git a/src/arch/x86/isa/insts/logical.py b/src/arch/x86/isa/insts/logical.py
index bbc15f8fa..81a4730de 100644
--- a/src/arch/x86/isa/insts/logical.py
+++ b/src/arch/x86/isa/insts/logical.py
@@ -56,14 +56,14 @@
microcode = '''
def macroop OR_R_R
{
- or reg, reg, regm
+ or reg, reg, regm, flags=(OF,SF,ZF,PF,CF)
};
def macroop OR_M_I
{
limm t2, imm
ld t1, ds, [scale, index, base], disp
- or t1, t1, t2
+ or t1, t1, t2, flags=(OF,SF,ZF,PF,CF)
st t1, ds, [scale, index, base], disp
};
@@ -72,14 +72,14 @@ def macroop OR_P_I
limm t2, imm
rdip t7
ld t1, ds, [0, t0, t7], disp
- or t1, t1, t2
+ or t1, t1, t2, flags=(OF,SF,ZF,PF,CF)
st t1, ds, [0, t0, t7], disp
};
def macroop OR_M_R
{
ld t1, ds, [scale, index, base], disp
- or t1, t1, reg
+ or t1, t1, reg, flags=(OF,SF,ZF,PF,CF)
st t1, ds, [scale, index, base], disp
};
@@ -87,45 +87,45 @@ def macroop OR_P_R
{
rdip t7
ld t1, ds, [0, t0, t7], disp
- or t1, t1, reg
+ or t1, t1, reg, flags=(OF,SF,ZF,PF,CF)
st t1, ds, [0, t0, t7], disp
};
def macroop OR_R_M
{
ld t1, ds, [scale, index, base], disp
- or reg, reg, t1
+ or reg, reg, t1, flags=(OF,SF,ZF,PF,CF)
};
def macroop OR_R_P
{
rdip t7
ld t1, ds, [0, t0, t7], disp
- or reg, reg, t1
+ or reg, reg, t1, flags=(OF,SF,ZF,PF,CF)
};
def macroop OR_R_I
{
limm t1, imm
- or reg, reg, t1
+ or reg, reg, t1, flags=(OF,SF,ZF,PF,CF)
};
def macroop XOR_R_R
{
- xor reg, reg, regm
+ xor reg, reg, regm, flags=(OF,SF,ZF,PF,CF)
};
def macroop XOR_R_I
{
limm t1, imm
- xor reg, reg, t1
+ xor reg, reg, t1, flags=(OF,SF,ZF,PF,CF)
};
def macroop XOR_M_I
{
limm t2, imm
ld t1, ds, [scale, index, base], disp
- xor t1, t1, t2
+ xor t1, t1, t2, flags=(OF,SF,ZF,PF,CF)
st t1, ds, [scale, index, base], disp
};
@@ -134,14 +134,14 @@ def macroop XOR_P_I
limm t2, imm
rdip t7
ld t1, ds, [scale, index, base], disp
- xor t1, t1, t2
+ xor t1, t1, t2, flags=(OF,SF,ZF,PF,CF)
st t1, ds, [scale, index, base], disp
};
def macroop XOR_M_R
{
ld t1, ds, [scale, index, base], disp
- xor t1, t1, reg
+ xor t1, t1, reg, flags=(OF,SF,ZF,PF,CF)
st t1, ds, [scale, index, base], disp
};
@@ -149,52 +149,52 @@ def macroop XOR_P_R
{
rdip t7
ld t1, ds, [scale, index, base], disp
- xor t1, t1, reg
+ xor t1, t1, reg, flags=(OF,SF,ZF,PF,CF)
st t1, ds, [scale, index, base], disp
};
def macroop XOR_R_M
{
ld t1, ds, [scale, index, base], disp
- xor reg, reg, t1
+ xor reg, reg, t1, flags=(OF,SF,ZF,PF,CF)
};
def macroop XOR_R_P
{
rdip t7
ld t1, ds, [scale, index, base], disp
- xor reg, reg, t1
+ xor reg, reg, t1, flags=(OF,SF,ZF,PF,CF)
};
def macroop AND_R_R
{
- and reg, reg, regm
+ and reg, reg, regm, flags=(OF,SF,ZF,PF,CF)
};
def macroop AND_R_M
{
ld t1, ds, [scale, index, base], disp
- and reg, reg, t1
+ and reg, reg, t1, flags=(OF,SF,ZF,PF,CF)
};
def macroop AND_R_P
{
rdip t7
ld t1, ds, [scale, index, base], disp
- and reg, reg, t1
+ and reg, reg, t1, flags=(OF,SF,ZF,PF,CF)
};
def macroop AND_R_I
{
limm t1, imm
- and reg, reg, t1
+ and reg, reg, t1, flags=(OF,SF,ZF,PF,CF)
};
def macroop AND_M_I
{
ld t2, ds, [scale, index, base], disp
limm t1, imm
- and t2, t2, t1
+ and t2, t2, t1, flags=(OF,SF,ZF,PF,CF)
st t2, ds, [scale, index, base], disp
};
@@ -203,14 +203,14 @@ def macroop AND_P_I
rdip t7
ld t2, ds, [scale, index, base], disp
limm t1, imm
- and t2, t2, t1
+ and t2, t2, t1, flags=(OF,SF,ZF,PF,CF)
st t2, ds, [scale, index, base], disp
};
def macroop AND_M_R
{
ld t1, ds, [scale, index, base], disp
- and t1, t1, reg
+ and t1, t1, reg, flags=(OF,SF,ZF,PF,CF)
st t1, ds, [scale, index, base], disp
};
@@ -218,7 +218,7 @@ def macroop AND_P_R
{
rdip t7
ld t1, ds, [scale, index, base], disp
- and t1, t1, reg
+ and t1, t1, reg, flags=(OF,SF,ZF,PF,CF)
st t1, ds, [scale, index, base], disp
};
diff --git a/src/arch/x86/isa/microops/regop.isa b/src/arch/x86/isa/microops/regop.isa
index bb34df7df..af3ee869b 100644
--- a/src/arch/x86/isa/microops/regop.isa
+++ b/src/arch/x86/isa/microops/regop.isa
@@ -326,12 +326,24 @@ let {{
checkCCFlagBits = "checkCondition(ccFlagBits)"
- genCCFlagBits = "ccFlagBits = genFlags(ccFlagBits, ext, DestReg, SrcReg1, %s);"
+ genCCFlagBits = \
+ "ccFlagBits = genFlags(ccFlagBits, ext, DestReg, SrcReg1, op2);"
+ genCCFlagBitsSub = \
+ "ccFlagBits = genFlags(ccFlagBits, ext, DestReg, SrcReg1, ~op2, true);"
+ genCCFlagBitsLogic = '''
+ //Don't have genFlags handle the OF or CF bits
+ uint64_t mask = CFBit | OFBit;
+ ccFlagBits = genFlags(ccFlagBits, ext & ~mask, DestReg, SrcReg1, op2);
+ //If a logic microop wants to set these, it wants to set them to 0.
+ ccFlagBits &= ~(CFBit & ext);
+ ccFlagBits &= ~(OFBit & ext);
+ '''
# This creates a python representations of a microop which are a cross
# product of reg/immediate and flag/no flag versions.
- def defineMicroRegOp(mnemonic, code, subtract = False, cc=False, elseCode=";"):
+ def defineMicroRegOp(mnemonic, code, flagCode=genCCFlagBits, \
+ cc=False, elseCode=";"):
Name = mnemonic
name = mnemonic.lower()
@@ -342,13 +354,7 @@ let {{
regCode = matcher.sub("SrcReg2", code)
immCode = matcher.sub("imm8", code)
- if subtract:
- secondSrc = "~op2, true"
- else:
- secondSrc = "op2"
-
if not cc:
- flagCode = genCCFlagBits % secondSrc
condCode = "true"
else:
flagCode = ""
@@ -360,26 +366,30 @@ let {{
class RegOpChild(RegOp):
mnemonic = name
className = Name
- def __init__(self, dest, src1, src2, flags=None, dataSize="env.dataSize"):
- super(RegOpChild, self).__init__(dest, src1, src2, flags, dataSize)
+ def __init__(self, dest, src1, src2, \
+ flags=None, dataSize="env.dataSize"):
+ super(RegOpChild, self).__init__(dest, src1, src2, \
+ flags, dataSize)
microopClasses[name] = RegOpChild
setUpMicroRegOp(name, Name, "X86ISA::RegOp", regCode);
setUpMicroRegOp(name, Name + "Flags", "X86ISA::RegOp", regCode,
- flagCode = regFlagCode, condCheck = condCode, elseCode = elseCode);
+ flagCode=regFlagCode, condCheck=condCode, elseCode=elseCode);
class RegOpChildImm(RegOpImm):
mnemonic = name + 'i'
className = Name + 'Imm'
- def __init__(self, dest, src1, src2, flags=None, dataSize="env.dataSize"):
- super(RegOpChildImm, self).__init__(dest, src1, src2, flags, dataSize)
+ def __init__(self, dest, src1, src2, \
+ flags=None, dataSize="env.dataSize"):
+ super(RegOpChildImm, self).__init__(dest, src1, src2, \
+ flags, dataSize)
microopClasses[name + 'i'] = RegOpChildImm
setUpMicroRegOp(name + "i", Name + "Imm", "X86ISA::RegOpImm", immCode);
setUpMicroRegOp(name + "i", Name + "ImmFlags", "X86ISA::RegOpImm", immCode,
- flagCode = immFlagCode, condCheck = condCode, elseCode = elseCode);
+ flagCode=immFlagCode, condCheck=condCode, elseCode=elseCode);
# This has it's own function because Wr ops have implicit destinations
def defineMicroRegOpWr(mnemonic, code, elseCode=";"):
@@ -447,7 +457,8 @@ let {{
setUpMicroRegOp(name, Name, "X86ISA::RegOpImm", code);
defineMicroRegOp('Add', 'DestReg = merge(DestReg, SrcReg1 + op2, dataSize)')
- defineMicroRegOp('Or', 'DestReg = merge(DestReg, SrcReg1 | op2, dataSize)')
+ defineMicroRegOp('Or', 'DestReg = merge(DestReg, SrcReg1 | op2, dataSize)',
+ flagCode = genCCFlagBitsLogic)
defineMicroRegOp('Adc', '''
CCFlagBits flags = ccFlagBits;
DestReg = merge(DestReg, SrcReg1 + op2 + flags.CF, dataSize);
@@ -455,12 +466,18 @@ let {{
defineMicroRegOp('Sbb', '''
CCFlagBits flags = ccFlagBits;
DestReg = merge(DestReg, SrcReg1 - op2 - flags.CF, dataSize);
- ''', True)
- defineMicroRegOp('And', 'DestReg = merge(DestReg, SrcReg1 & op2, dataSize)')
- defineMicroRegOp('Sub', 'DestReg = merge(DestReg, SrcReg1 - op2, dataSize)', True)
- defineMicroRegOp('Xor', 'DestReg = merge(DestReg, SrcReg1 ^ op2, dataSize)')
- # defineMicroRegOp('Cmp', 'DestReg = merge(DestReg, DestReg - op2, dataSize)', True)
- defineMicroRegOp('Mul1s', 'DestReg = merge(DestReg, DestReg * op2, dataSize)')
+ ''', flagCode = genCCFlagBitsSub)
+ defineMicroRegOp('And', \
+ 'DestReg = merge(DestReg, SrcReg1 & op2, dataSize)', \
+ flagCode = genCCFlagBitsLogic)
+ defineMicroRegOp('Sub', \
+ 'DestReg = merge(DestReg, SrcReg1 - op2, dataSize)', \
+ flagCode = genCCFlagBitsSub)
+ defineMicroRegOp('Xor', \
+ 'DestReg = merge(DestReg, SrcReg1 ^ op2, dataSize)', \
+ flagCode = genCCFlagBitsLogic)
+ defineMicroRegOp('Mul1s', \
+ 'DestReg = merge(DestReg, DestReg * op2, dataSize)')
defineMicroRegOp('Mov', 'DestReg = merge(SrcReg1, op2, dataSize)',
elseCode='DestReg=DestReg;', cc=True)
generated by cgit v1.2.3 (git 2.25.1) at 2024-12-24 14:20:07 +0000