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author | Gabe Black <gblack@eecs.umich.edu> | 2010-06-02 12:58:09 -0500 |
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committer | Gabe Black <gblack@eecs.umich.edu> | 2010-06-02 12:58:09 -0500 |
commit | 6a4ea7cca9095bfc30597ed7cd1c694aaae071a2 (patch) | |
tree | 1e0d85d13ef9825385e30ebea7250f69069fea35 /src/arch/arm/isa/insts | |
parent | eb0823c4f2666e6b3de441fa661e9e17ef908d8f (diff) | |
download | gem5-6a4ea7cca9095bfc30597ed7cd1c694aaae071a2.tar.xz |
ARM: Implement the enterx and leavex instructions.
These enter and leave thumbEE mode. Currently thumbEE mode behaves exactly the
same as Thumb mode, but at least this will make it -look- like we're enter and
leaving it. The actual behavioral changes will be implemented in future
changes.
Diffstat (limited to 'src/arch/arm/isa/insts')
-rw-r--r-- | src/arch/arm/isa/insts/misc.isa | 20 |
1 files changed, 20 insertions, 0 deletions
diff --git a/src/arch/arm/isa/insts/misc.isa b/src/arch/arm/isa/insts/misc.isa index 42dea7b95..7ec18c9e9 100644 --- a/src/arch/arm/isa/insts/misc.isa +++ b/src/arch/arm/isa/insts/misc.isa @@ -514,4 +514,24 @@ let {{ header_output += RegRegOpDeclare.subst(mcr15Iop) decoder_output += RegRegOpConstructor.subst(mcr15Iop) exec_output += PredOpExecute.subst(mcr15Iop) + + enterxCode = ''' + FNPC = NPC | (1ULL << PcJBitShift) | (1ULL << PcTBitShift); + ''' + enterxIop = InstObjParams("enterx", "Enterx", "PredOp", + { "code": enterxCode, + "predicate_test": predicateTest }, []) + header_output += BasicDeclare.subst(enterxIop) + decoder_output += BasicConstructor.subst(enterxIop) + exec_output += PredOpExecute.subst(enterxIop) + + leavexCode = ''' + FNPC = (NPC & ~(1ULL << PcJBitShift)) | (1ULL << PcTBitShift); + ''' + leavexIop = InstObjParams("leavex", "Leavex", "PredOp", + { "code": leavexCode, + "predicate_test": predicateTest }, []) + header_output += BasicDeclare.subst(leavexIop) + decoder_output += BasicConstructor.subst(leavexIop) + exec_output += PredOpExecute.subst(leavexIop) }}; |