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ARM: Decode the VMSR instruction.

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This commit is contained in:
Gabe Black 2010-06-02 12:58:11 -05:00
parent 06008c54eb
commit a8b56b452c
1 changed files with 17 additions and 3 deletions
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20
src/arch/arm/isa/formats/fp.isa
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@ -224,9 +224,23 @@ def format ShortFpTransfer() {{
// A8-648
return new WarnUnimplemented("vmov", machInst);
} else if (a == 0x7) {
// A8-660
// B6-29
return new WarnUnimplemented("vmsr", machInst);
const IntRegIndex rt =
(IntRegIndex)(uint32_t)bits(machInst, 15, 12);
uint32_t specReg = bits(machInst, 19, 16);
switch (specReg) {
case 0:
specReg = MISCREG_FPSID;
break;
case 1:
specReg = MISCREG_FPSCR;
break;
case 8:
specReg = MISCREG_FPEXC;
break;
default:
return new Unknown(machInst);
}
return new Vmsr(machInst, (IntRegIndex)specReg, rt);
}
} else if (l == 0 && c == 1) {
if (bits(a, 2) == 0) {