| /* |
| * Unconditional branch, 32-bit offset. |
| * |
| * The branch distance is a signed code-unit offset, which we need to |
| * double to get a byte offset. |
| * |
| * Unlike most opcodes, this one is allowed to branch to itself, so |
| * our "backward branch" test must be "<=0" instead of "<0". |
| */ |
| /* goto/32 +AAAAAAAA */ |
| .extern MterpProfileBranch |
| lh rINST, 2(rPC) # rINST <- aaaa (low) |
| lh a1, 4(rPC) # a1 <- AAAA (high) |
| ins rINST, a1, 16, 16 # rINST <- offset (sign-extended AAAAaaaa) |
| #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 |
| blez a0, MterpCheckSuspendAndContinue # suspend check if backwards branch |
| GET_INST_OPCODE v0 # extract opcode from rINST |
| GOTO_OPCODE v0 # jump to next instruction |
