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ARM: Decode the rbit instruction.

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This commit is contained in:
Gabe Black 2010-06-02 12:58:07 -05:00
parent 5cc1bb6842
commit 00320a53ab
1 changed files with 14 additions and 14 deletions
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28
src/arch/arm/isa/formats/data.isa
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@ -283,26 +283,26 @@ def format ArmPackUnpackSatReverse() {{
}
break;
case 0x7:
if (op2 == 0x1) {
return new WarnUnimplemented("rbit", machInst);
} else if (op2 == 0x3) {
{
const IntRegIndex rn =
(IntRegIndex)(uint32_t)bits(machInst, 19, 16);
const IntRegIndex rd =
(IntRegIndex)(uint32_t)bits(machInst, 15, 12);
const IntRegIndex rm =
(IntRegIndex)(uint32_t)bits(machInst, 3, 0);
const uint32_t rotation =
(uint32_t)bits(machInst, 11, 10) << 3;
if (a == 0xf) {
return new Uxth(machInst, rd, rotation, rm);
} else {
return new Uxtah(machInst, rd, rn, rm, rotation);
if (op2 == 0x1) {
return new Rbit(machInst, rd, rm);
} else if (op2 == 0x3) {
const uint32_t rotation =
(uint32_t)bits(machInst, 11, 10) << 3;
if (a == 0xf) {
return new Uxth(machInst, rd, rotation, rm);
} else {
return new Uxtah(machInst, rd, rn, rm, rotation);
}
} else if (op2 == 0x5) {
return new Revsh(machInst, rd, rm);
}
} else if (op2 == 0x5) {
IntRegIndex rd = (IntRegIndex)(uint32_t)bits(machInst, 15, 12);
IntRegIndex rm = (IntRegIndex)(uint32_t)bits(machInst, 3, 0);
return new Revsh(machInst, rd, rm);
}
break;
}
@ -791,7 +791,7 @@ def format Thumb32DataProcReg() {{
case 0x1:
return new Rev16(machInst, rd, rn);
case 0x2:
return new WarnUnimplemented("rbit", machInst);
return new Rbit(machInst, rd, rm);
case 0x3:
return new Revsh(machInst, rd, rn);
}