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| author | David Hashe <david.hashe@amd.com> | 2015-07-20 09:15:18 -0500 |
|---|---|---|
| committer | David Hashe <david.hashe@amd.com> | 2015-07-20 09:15:18 -0500 |
| commit | a2d9aae3c3dae1ffdd62eb91d2318758772684dc (patch) | |
| tree | 84a3cd2212175939cb6589547f89858d48e7bb55 /src/arch/x86 | |
| parent | 9560893f0d2e74d1c6c22fee501cd24d4f6e13d7 (diff) | |
| download | gem5-a2d9aae3c3dae1ffdd62eb91d2318758772684dc.tar.xz | |
x86: x86 instruction-implementation bug fixes
Added explicit data sizes and an opcode type for correct execution.
Diffstat (limited to 'src/arch/x86')
| -rw-r--r-- | src/arch/x86/isa/decoder/two_byte_opcodes.isa | 6 | ||||
| -rw-r--r-- | src/arch/x86/isa/insts/general_purpose/control_transfer/jump.py | 7 | ||||
| -rw-r--r-- | src/arch/x86/isa/insts/system/segmentation.py | 5 |
3 files changed, 13 insertions, 5 deletions
diff --git a/src/arch/x86/isa/decoder/two_byte_opcodes.isa b/src/arch/x86/isa/decoder/two_byte_opcodes.isa index dfc328c4b..0ba7434e8 100644 --- a/src/arch/x86/isa/decoder/two_byte_opcodes.isa +++ b/src/arch/x86/isa/decoder/two_byte_opcodes.isa @@ -1,4 +1,5 @@ // Copyright (c) 2007-2008 The Hewlett-Packard Development Company +// Copyright (c) 2012-2013 AMD // All rights reserved. // // The license below extends only to copyright in the software and shall @@ -361,6 +362,11 @@ 0x3: MOV(Dd,Rd); default: UD2(); } + // operand size (0x66) + 0x1: decode OPCODE_OP_BOTTOM3 { + 0x0: MOV(Rd,Cd); + 0x2: MOV(Cd,Rd); + } default: UD2(); } 0x05: decode LEGACY_DECODEVAL { diff --git a/src/arch/x86/isa/insts/general_purpose/control_transfer/jump.py b/src/arch/x86/isa/insts/general_purpose/control_transfer/jump.py index 3bb2d3e87..6f419ce8d 100644 --- a/src/arch/x86/isa/insts/general_purpose/control_transfer/jump.py +++ b/src/arch/x86/isa/insts/general_purpose/control_transfer/jump.py @@ -1,4 +1,5 @@ # Copyright (c) 2007 The Hewlett-Packard Development Company +# Copyright (c) 2012-2013 AMD # All rights reserved. # # The license below extends only to copyright in the software and shall @@ -127,9 +128,9 @@ farJmpProcessDescriptor: rcri t0, t4, 13, flags=(ECF,), dataSize=2 br rom_local_label("farJmpSystemDescriptor"), flags=(nCECF,) chks t2, t4, CSCheck, dataSize=8 - wrdl cs, t4, t2 - wrsel cs, t2 - wrip t0, t1 + wrdl cs, t4, t2, dataSize=4 + wrsel cs, t2, dataSize=4 + wrip t0, t1, dataSize=4 eret farJmpSystemDescriptor: diff --git a/src/arch/x86/isa/insts/system/segmentation.py b/src/arch/x86/isa/insts/system/segmentation.py index 53b6908ed..3c8648127 100644 --- a/src/arch/x86/isa/insts/system/segmentation.py +++ b/src/arch/x86/isa/insts/system/segmentation.py @@ -1,4 +1,5 @@ # Copyright (c) 2007 The Hewlett-Packard Development Company +# Copyright (c) 2012-2013 AMD # All rights reserved. # # The license below extends only to copyright in the software and shall @@ -78,7 +79,7 @@ def macroop LGDT_16_M # Get the base ld t2, seg, sib, 'adjustedDisp + 2', dataSize=4 zexti t2, t2, 23, dataSize=8 - wrbase tsg, t2 + wrbase tsg, t2, dataSize=8 wrlimit tsg, t1 }; @@ -139,7 +140,7 @@ def macroop LIDT_16_M # Get the base ld t2, seg, sib, 'adjustedDisp + 2', dataSize=4 zexti t2, t2, 23, dataSize=8 - wrbase idtr, t2 + wrbase idtr, t2, dataSize=8 wrlimit idtr, t1 }; |