| /* |
| * Generic one-operand compare-and-branch operation. Provide a "revcmp" |
| * fragment that specifies the *reverse* comparison to perform, e.g. |
| * for "if-le" you would use "gt". |
| * |
| * for: if-eqz, if-nez, if-ltz, if-gez, if-gtz, if-lez |
| */ |
| /* if-cmp vAA, +BBBB */ |
| #if MTERP_SUSPEND |
| mov r0, rINST, lsr #8 @ r0<- AA |
| GET_VREG r2, r0 @ r2<- vAA |
| FETCH_S r1, 1 @ r1<- branch offset, in code units |
| cmp r2, #0 @ compare (vA, 0) |
| mov${revcmp} r1, #2 @ r1<- inst branch dist for not-taken |
| adds r1, r1, r1 @ convert to bytes & set flags |
| FETCH_ADVANCE_INST_RB r1 @ update rPC, load rINST |
| ldrmi rIBASE, [rSELF, #THREAD_CURRENT_IBASE_OFFSET] @ refresh table base |
| GET_INST_OPCODE ip @ extract opcode from rINST |
| GOTO_OPCODE ip @ jump to next instruction |
| #else |
| mov r0, rINST, lsr #8 @ r0<- AA |
| GET_VREG r2, r0 @ r2<- vAA |
| FETCH_S r1, 1 @ r1<- branch offset, in code units |
| ldr lr, [rSELF, #THREAD_FLAGS_OFFSET] |
| cmp r2, #0 @ compare (vA, 0) |
| mov${revcmp} r1, #2 @ r1<- inst branch dist for not-taken |
| adds r1, r1, r1 @ convert to bytes & set flags |
| FETCH_ADVANCE_INST_RB r1 @ update rPC, load rINST |
| bmi MterpCheckSuspendAndContinue |
| GET_INST_OPCODE ip @ extract opcode from rINST |
| GOTO_OPCODE ip @ jump to next instruction |
| #endif |
