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ARM: Decode the ARM version of the REV* instructions.

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Gabe Black 2010-06-02 12:58:05 -05:00
parent 59c726b6f4
commit 15356af288
1 changed files with 9 additions and 3 deletions
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12
src/arch/arm/isa/formats/data.isa
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@ -165,7 +165,9 @@ def format ArmPackUnpackSatReverse() {{
break;
case 0x3:
if (op2 == 0x1) {
return new WarnUnimplemented("rev", machInst);
IntRegIndex rd = (IntRegIndex)(uint32_t)bits(machInst, 15, 12);
IntRegIndex rm = (IntRegIndex)(uint32_t)bits(machInst, 3, 0);
return new Rev(machInst, rd, rm);
} else if (op2 == 0x3) {
if (a == 0xf) {
return new WarnUnimplemented("sxth", machInst);
@ -173,7 +175,9 @@ def format ArmPackUnpackSatReverse() {{
return new WarnUnimplemented("sxtah", machInst);
}
} else if (op2 == 0x5) {
return new WarnUnimplemented("rev16", machInst);
IntRegIndex rd = (IntRegIndex)(uint32_t)bits(machInst, 15, 12);
IntRegIndex rm = (IntRegIndex)(uint32_t)bits(machInst, 3, 0);
return new Rev16(machInst, rd, rm);
}
break;
case 0x4:
@ -206,7 +210,9 @@ def format ArmPackUnpackSatReverse() {{
return new WarnUnimplemented("uxtah", machInst);
}
} else if (op2 == 0x5) {
return new WarnUnimplemented("revsh", machInst);
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;
}