| /* |
| * Generic one-operand compare-and-branch operation. Provide a "condition" |
| * fragment that specifies the comparison to perform, e.g. for |
| * "if-lez" you would use "le". |
| * |
| * For: if-eqz, if-nez, if-ltz, if-gez, if-gtz, if-lez |
| */ |
| /* if-cmp vAA, +BBBB */ |
| .extern MterpProfileBranch |
| srl a2, rINST, 8 # a2 <- AA |
| lh rINST, 2(rPC) # rINST <- offset (sign-extended BBBB) |
| GET_VREG a0, a2 # a0 <- vAA |
| b${condition}zc a0, 1f |
| li rINST, 2 # offset if branch not taken |
| 1: |
| #if MTERP_PROFILE_BRANCHES |
| EXPORT_PC |
| move a0, rSELF |
| daddu a1, rFP, OFF_FP_SHADOWFRAME |
| move a2, rINST |
| jal MterpProfileBranch # (self, shadow_frame, offset) |
| bnezc v0, MterpOnStackReplacement # Note: offset must be in rINST |
| #endif |
| dlsa rPC, rINST, rPC, 1 # rPC <- rPC + offset * 2 |
| lw ra, THREAD_FLAGS_OFFSET(rSELF) # Preload flags for MterpCheckSuspendAndContinue |
| move a0, rINST # a0 <- offset |
| FETCH_INST # load rINST |
| bltz a0, MterpCheckSuspendAndContinue # suspend check if backwards branch |
| GET_INST_OPCODE v0 # extract opcode from rINST |
| GOTO_OPCODE v0 # jump to next instruction |
