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authorGabe Black <gblack@eecs.umich.edu>2010-06-02 12:58:05 -0500
committerGabe Black <gblack@eecs.umich.edu>2010-06-02 12:58:05 -0500
commitaa8493d7d1a84eebd72894912306172c601a2696 (patch)
tree8575b53ecc27449e0ea0ccf2997cae5ad5d681d8 /src/arch/arm/isa/insts/misc.isa
parentc981a4de2b317a3e5dd6813e809973c7d6734f41 (diff)
downloadgem5-aa8493d7d1a84eebd72894912306172c601a2696.tar.xz
ARM: Implement the REV* instructions.
Diffstat (limited to 'src/arch/arm/isa/insts/misc.isa')
-rw-r--r--src/arch/arm/isa/insts/misc.isa36
1 files changed, 36 insertions, 0 deletions
diff --git a/src/arch/arm/isa/insts/misc.isa b/src/arch/arm/isa/insts/misc.isa
index fafbc197d..3195bea65 100644
--- a/src/arch/arm/isa/insts/misc.isa
+++ b/src/arch/arm/isa/insts/misc.isa
@@ -117,4 +117,40 @@ let {{
header_output += MsrImmDeclare.subst(msrSpsrImmIop)
decoder_output += MsrImmConstructor.subst(msrSpsrImmIop)
exec_output += PredOpExecute.subst(msrSpsrImmIop)
+
+ revCode = '''
+ uint32_t val = Op1;
+ Dest = swap_byte(val);
+ '''
+ revIop = InstObjParams("rev", "Rev", "RevOp",
+ { "code": revCode,
+ "predicate_test": predicateTest }, [])
+ header_output += RevOpDeclare.subst(revIop)
+ decoder_output += RevOpConstructor.subst(revIop)
+ exec_output += PredOpExecute.subst(revIop)
+
+ rev16Code = '''
+ uint32_t val = Op1;
+ Dest = (bits(val, 15, 8) << 0) |
+ (bits(val, 7, 0) << 8) |
+ (bits(val, 31, 24) << 16) |
+ (bits(val, 23, 16) << 24);
+ '''
+ rev16Iop = InstObjParams("rev16", "Rev16", "RevOp",
+ { "code": rev16Code,
+ "predicate_test": predicateTest }, [])
+ header_output += RevOpDeclare.subst(rev16Iop)
+ decoder_output += RevOpConstructor.subst(rev16Iop)
+ exec_output += PredOpExecute.subst(rev16Iop)
+
+ revshCode = '''
+ uint16_t val = Op1;
+ Dest = sext<16>(swap_byte(val));
+ '''
+ revshIop = InstObjParams("revsh", "Revsh", "RevOp",
+ { "code": revshCode,
+ "predicate_test": predicateTest }, [])
+ header_output += RevOpDeclare.subst(revshIop)
+ decoder_output += RevOpConstructor.subst(revshIop)
+ exec_output += PredOpExecute.subst(revshIop)
}};