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| author | Gabe Black <gblack@eecs.umich.edu> | 2007-08-07 15:19:26 -0700 |
|---|---|---|
| committer | Gabe Black <gblack@eecs.umich.edu> | 2007-08-07 15:19:26 -0700 |
| commit | fb6cdf09cb4cfe9f39fdc7381168883fae6816ec (patch) | |
| tree | 749d30835f7f27edbd21f913e057c9bc922eb528 /src/arch/x86/isa | |
| parent | cae8d20633c0f43fdae23576adfb894284a7ee86 (diff) | |
| download | gem5-fb6cdf09cb4cfe9f39fdc7381168883fae6816ec.tar.xz | |
X86: Make a microcode branch microop.
Also some touch up for ruflag.
--HG--
extra : convert_revision : 829947169af25ca6573f53b9430707101c75cc23
Diffstat (limited to 'src/arch/x86/isa')
| -rw-r--r-- | src/arch/x86/isa/microops/regop.isa | 5 | ||||
| -rw-r--r-- | src/arch/x86/isa/operands.isa | 4 |
2 files changed, 6 insertions, 3 deletions
diff --git a/src/arch/x86/isa/microops/regop.isa b/src/arch/x86/isa/microops/regop.isa index ac88be657..c6a25279e 100644 --- a/src/arch/x86/isa/microops/regop.isa +++ b/src/arch/x86/isa/microops/regop.isa @@ -453,7 +453,7 @@ let {{ setUpMicroRegOp(name, Name, "X86ISA::RegOp", code); - def defineMicroRegOpImm(mnemonic, code): + def defineMicroRegOpImm(mnemonic, code, flagCode=""): Name = mnemonic name = mnemonic.lower() code = immPick + code @@ -615,11 +615,12 @@ let {{ ''') defineMicroRegOpWr('Wrip', 'RIP = psrc1 + op2', elseCode="RIP = RIP;") + defineMicroRegOpWr('Br', 'nuIP = psrc1 + op2;', elseCode='nuIP = nuIP;') defineMicroRegOpWr('Wruflags', 'ccFlagBits = psrc1 ^ op2') defineMicroRegOpRd('Rdip', 'DestReg = RIP') defineMicroRegOpRd('Ruflags', 'DestReg = ccFlagBits') - defineMicroRegOpImm('Ruflag', 'DestReg = bits(ccFlagBits, imm8);', \ + defineMicroRegOpImm('Ruflag', 'DestReg = bits(ccFlagBits, imm8 + 0*psrc1);', \ flagCode = genCCFlagBitsLogic) defineMicroRegOpImm('Sext', ''' diff --git a/src/arch/x86/isa/operands.isa b/src/arch/x86/isa/operands.isa index 64179ca98..098a75370 100644 --- a/src/arch/x86/isa/operands.isa +++ b/src/arch/x86/isa/operands.isa @@ -104,7 +104,9 @@ def operands {{ 'Data': ('IntReg', 'uqw', '(((data & 0x1C) == 4 ? foldOBit : 0) | data)', 'IsInteger', 6), 'rax': ('IntReg', 'uqw', '(INTREG_RAX)', 'IsInteger', 7), 'RIP': ('NPC', 'uqw', None, (None, None, 'IsControl'), 10), - 'ccFlagBits': ('IntReg', 'uqw', 'NUM_INTREGS + NumMicroIntRegs', None, 20), + 'uIP': ('UPC', 'uqw', None, (None, None, 'IsControl'), 11), + 'nuIP': ('NUPC', 'uqw', None, (None, None, 'IsControl'), 12), + 'ccFlagBits': ('IntReg', 'uqw', 'NUM_INTREGS + NumMicroIntRegs', None, 20), 'SegBase': ('ControlReg', 'uqw', 'MISCREG_SEG_BASE_BASE + segment', (None, None, ['IsSerializeAfter','IsSerializing','IsNonSpeculative']), 50), 'Mem': ('Mem', 'uqw', None, ('IsMemRef', 'IsLoad', 'IsStore'), 100) }}; |