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ARM: Implement the REV* instructions.

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Gabe Black 2010-06-02 12:58:05 -05:00
parent c981a4de2b
commit aa8493d7d1
1 changed files with 36 additions and 0 deletions
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36
src/arch/arm/isa/insts/misc.isa
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@ -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)
}};