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| author | Gabe Black <gblack@eecs.umich.edu> | 2008-10-12 23:00:07 -0700 |
|---|---|---|
| committer | Gabe Black <gblack@eecs.umich.edu> | 2008-10-12 23:00:07 -0700 |
| commit | 564eda827bc9ebe3bacfb9a44838e4abc1deb61b (patch) | |
| tree | f88bd0326ea02aab5751a6080aaaa22aa958c22c /src/arch/x86 | |
| parent | a2e0d539d89643ce5243be9b8a0be4c3bcee7520 (diff) | |
| download | gem5-564eda827bc9ebe3bacfb9a44838e4abc1deb61b.tar.xz | |
X86: Implement the swapgs instruction.
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/segmentation.py | 8 |
2 files changed, 9 insertions, 1 deletions
diff --git a/src/arch/x86/isa/decoder/two_byte_opcodes.isa b/src/arch/x86/isa/decoder/two_byte_opcodes.isa index bceb0595e..b8013165e 100644 --- a/src/arch/x86/isa/decoder/two_byte_opcodes.isa +++ b/src/arch/x86/isa/decoder/two_byte_opcodes.isa @@ -128,7 +128,7 @@ 0x4: smsw_Rv(); 0x6: lmsw_Rv(); 0x7: decode MODRM_RM { - 0x0: swapgs(); + 0x0: Inst::SWAPGS(); 0x1: rdtscp(); default: Inst::UD2(); } diff --git a/src/arch/x86/isa/insts/system/segmentation.py b/src/arch/x86/isa/insts/system/segmentation.py index 97846f79c..49d8eb110 100644 --- a/src/arch/x86/isa/insts/system/segmentation.py +++ b/src/arch/x86/isa/insts/system/segmentation.py @@ -167,4 +167,12 @@ def macroop LIDT_16_P wrbase idtr, t2 wrlimit idtr, t1 }; + +def macroop SWAPGS +{ + rdval t1, kernel_gs_base, dataSize=8 + rdbase t2, gs, dataSize=8 + wrbase gs, t1, dataSize=8 + wrval kernel_gs_base, t2, dataSize=8 +}; ''' |