| /* |
| * Generic two-operand compare-and-branch operation. Provide a "condition" |
| * fragment that specifies the comparison to perform, e.g. for |
| * "if-le" you would use "le". |
| * |
| * For: if-eq, if-ne, if-lt, if-ge, if-gt, if-le |
| */ |
| /* if-cmp vA, vB, +CCCC */ |
| lh a4, 2(rPC) # a4 <- sign-extended CCCC |
| ext a2, rINST, 8, 4 # a2 <- A |
| ext a3, rINST, 12, 4 # a3 <- B |
| GET_VREG a0, a2 # a0 <- vA |
| GET_VREG a1, a3 # a1 <- vB |
| |
| b${condition}c a0, a1, 1f |
| li a4, 2 # offset if branch not taken |
| 1: |
| |
| dlsa rPC, a4, rPC, 1 # rPC <- rPC + CCCC * 2 |
| FETCH_INST # load rINST |
| |
| #if MTERP_SUSPEND |
| bgez a4, 2f # CCCC * 2 >= 0 => no suspend check |
| REFRESH_IBASE |
| 2: |
| #else |
| lw ra, THREAD_FLAGS_OFFSET(rSELF) # Preload flags for MterpCheckSuspendAndContinue |
| bltz a4, MterpCheckSuspendAndContinue |
| #endif |
| |
| GET_INST_OPCODE v0 # extract opcode from rINST |
| GOTO_OPCODE v0 # jump to next instruction |
