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| author | Gabe Black <gblack@eecs.umich.edu> | 2008-06-12 00:39:10 -0400 |
|---|---|---|
| committer | Gabe Black <gblack@eecs.umich.edu> | 2008-06-12 00:39:10 -0400 |
| commit | 8501a90f59c73896b4eea6d7ce8f1d1cc8685d53 (patch) | |
| tree | 6e8be3ff12c7092a551ca0e816f622083de39f8c /src/arch/x86/isa | |
| parent | d093fcb07924cc4341b8142c448b905dd94f7125 (diff) | |
| download | gem5-8501a90f59c73896b4eea6d7ce8f1d1cc8685d53.tar.xz | |
X86: Add in some support for the tsc register.
Diffstat (limited to 'src/arch/x86/isa')
| -rw-r--r-- | src/arch/x86/isa/decoder/two_byte_opcodes.isa | 2 | ||||
| -rw-r--r-- | src/arch/x86/isa/insts/system/msrs.py | 8 | ||||
| -rw-r--r-- | src/arch/x86/isa/microops/regop.isa | 12 | ||||
| -rw-r--r-- | src/arch/x86/isa/operands.isa | 3 |
4 files changed, 22 insertions, 3 deletions
diff --git a/src/arch/x86/isa/decoder/two_byte_opcodes.isa b/src/arch/x86/isa/decoder/two_byte_opcodes.isa index 8135a1fdb..e2d968c17 100644 --- a/src/arch/x86/isa/decoder/two_byte_opcodes.isa +++ b/src/arch/x86/isa/decoder/two_byte_opcodes.isa @@ -317,7 +317,7 @@ } 0x06: decode OPCODE_OP_BOTTOM3 { 0x0: Inst::WRMSR(); - 0x1: rdtsc(); + 0x1: Inst::RDTSC(); 0x2: Inst::RDMSR(); 0x3: rdpmc(); 0x4: sysenter(); diff --git a/src/arch/x86/isa/insts/system/msrs.py b/src/arch/x86/isa/insts/system/msrs.py index 1acb4c792..461ed1054 100644 --- a/src/arch/x86/isa/insts/system/msrs.py +++ b/src/arch/x86/isa/insts/system/msrs.py @@ -99,4 +99,12 @@ def macroop WRMSR or t2, t2, t3, dataSize=8 st t2, intseg, [8, t1, rcx], dataSize=8, addressSize=4 }; + +def macroop RDTSC +{ + rdtsc t1 + mov rax, rax, t1, dataSize=4 + srli t1, t1, 32, dataSize=8 + mov rdx, rdx, t1, dataSize=4 +}; ''' diff --git a/src/arch/x86/isa/microops/regop.isa b/src/arch/x86/isa/microops/regop.isa index e761f0034..03a7515ed 100644 --- a/src/arch/x86/isa/microops/regop.isa +++ b/src/arch/x86/isa/microops/regop.isa @@ -1,4 +1,4 @@ -// Copyright (c) 2007 The Hewlett-Packard Development Company +// Copyright (c) 2007-2008 The Hewlett-Packard Development Company // All rights reserved. // // Redistribution and use of this software in source and binary forms, @@ -1018,6 +1018,16 @@ let {{ ''' + class Wrtsc(WrRegOp): + code = ''' + TscOp = psrc1; + ''' + + class Rdtsc(RdRegOp): + code = ''' + DestReg = TscOp; + ''' + class Wrdl(RegOp): code = ''' SegDescriptor desc = SrcReg1; diff --git a/src/arch/x86/isa/operands.isa b/src/arch/x86/isa/operands.isa index 9345158e9..87fd28a6a 100644 --- a/src/arch/x86/isa/operands.isa +++ b/src/arch/x86/isa/operands.isa @@ -26,7 +26,7 @@ // // Authors: Gabe Black -// Copyright (c) 2007 The Hewlett-Packard Development Company +// Copyright (c) 2007-2008 The Hewlett-Packard Development Company // All rights reserved. // // Redistribution and use of this software in source and binary forms, @@ -146,5 +146,6 @@ def operands {{ '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), + 'TscOp': ('ControlReg', 'udw', 'MISCREG_TSC', (None, None, ['IsSerializeAfter', 'IsSerializing', 'IsNonSpeculative']), 208), 'Mem': ('Mem', 'uqw', None, ('IsMemRef', 'IsLoad', 'IsStore'), 300) }}; |