diff options
Diffstat (limited to 'src/arch/x86')
| -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 | ||||
| -rw-r--r-- | src/arch/x86/miscregfile.cc | 8 |
5 files changed, 30 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) }}; diff --git a/src/arch/x86/miscregfile.cc b/src/arch/x86/miscregfile.cc index 5d75af0cf..930bf53c7 100644 --- a/src/arch/x86/miscregfile.cc +++ b/src/arch/x86/miscregfile.cc @@ -87,6 +87,7 @@ #include "arch/x86/miscregfile.hh" #include "arch/x86/tlb.hh" +#include "cpu/base.hh" #include "cpu/thread_context.hh" #include "sim/serialize.hh" @@ -178,6 +179,10 @@ MiscReg MiscRegFile::readReg(int miscReg, ThreadContext * tc) break; } } + switch (miscReg) { + case MISCREG_TSC: + return regVal[MISCREG_TSC] + tc->getCpuPtr()->curCycle(); + } return readRegNoEffect(miscReg); } @@ -377,6 +382,9 @@ void MiscRegFile::setReg(int miscReg, MISCREG_SEG_BASE_BASE)] = val; } break; + case MISCREG_TSC: + regVal[MISCREG_TSC] = val - tc->getCpuPtr()->curCycle(); + return; } setRegNoEffect(miscReg, newVal); } |