| /* | |
| * Compare two 64-bit values. Puts 0, 1, or -1 into the destination | |
| * register based on the results of the comparison. | |
| */ | |
| /* cmp-long vAA, vBB, vCC */ | |
| FETCH r0, 1 @ r0<- CCBB | |
| mov r9, rINST, lsr #8 @ r9<- AA | |
| and r2, r0, #255 @ r2<- BB | |
| mov r3, r0, lsr #8 @ r3<- CC | |
| VREG_INDEX_TO_ADDR r2, r2 @ r2<- &fp[BB] | |
| VREG_INDEX_TO_ADDR r3, r3 @ r3<- &fp[CC] | |
| ldmia r2, {r0-r1} @ r0/r1<- vBB/vBB+1 | |
| ldmia r3, {r2-r3} @ r2/r3<- vCC/vCC+1 | |
| cmp r0, r2 | |
| sbcs ip, r1, r3 @ Sets correct CCs for checking LT (but not EQ/NE) | |
| mov ip, #0 | |
| mvnlt ip, #0 @ -1 | |
| cmpeq r0, r2 @ For correct EQ/NE, we may need to repeat the first CMP | |
| orrne ip, #1 | |
| FETCH_ADVANCE_INST 2 @ advance rPC, load rINST | |
| SET_VREG ip, r9 @ vAA<- ip | |
| GET_INST_OPCODE ip @ extract opcode from rINST | |
| GOTO_OPCODE ip @ jump to next instruction |