| %default { "func":"MterpDoPackedSwitch" } |
| /* |
| * Handle a packed-switch or sparse-switch instruction. In both cases |
| * we decode it and hand it off to a helper function. |
| * |
| * We don't really expect backward branches in a switch statement, but |
| * they're perfectly legal, so we check for them here. |
| * |
| * for: packed-switch, sparse-switch |
| */ |
| /* op vAA, +BBBB */ |
| #if MTERP_PROFILE_BRANCHES |
| FETCH(a0, 1) # a0 <- bbbb (lo) |
| FETCH(a1, 2) # a1 <- BBBB (hi) |
| GET_OPA(a3) # a3 <- AA |
| sll t0, a1, 16 |
| or a0, a0, t0 # a0 <- BBBBbbbb |
| GET_VREG(a1, a3) # a1 <- vAA |
| EAS1(a0, rPC, a0) # a0 <- PC + BBBBbbbb*2 |
| JAL($func) # a0 <- code-unit branch offset |
| move rINST, v0 |
| EXPORT_PC() |
| move a0, rSELF |
| addu a1, rFP, OFF_FP_SHADOWFRAME |
| move a2, rINST |
| JAL(MterpProfileBranch) # (self, shadow_frame, offset) |
| bnez v0, MterpOnStackReplacement # Note: offset must be in rINST |
| addu a1, rINST, rINST # a1 <- byte offset |
| FETCH_ADVANCE_INST_RB(a1) # update rPC, load rINST |
| bgtz a1, .L${opcode}_finish |
| lw ra, THREAD_FLAGS_OFFSET(rSELF) |
| b MterpCheckSuspendAndContinue |
| #else |
| FETCH(a0, 1) # a0 <- bbbb (lo) |
| FETCH(a1, 2) # a1 <- BBBB (hi) |
| GET_OPA(a3) # a3 <- AA |
| sll t0, a1, 16 |
| or a0, a0, t0 # a0 <- BBBBbbbb |
| GET_VREG(a1, a3) # a1 <- vAA |
| EAS1(a0, rPC, a0) # a0 <- PC + BBBBbbbb*2 |
| JAL($func) # a0 <- code-unit branch offset |
| move rINST, v0 |
| addu a1, rINST, rINST # a1 <- byte offset |
| FETCH_ADVANCE_INST_RB(a1) # update rPC, load rINST |
| bgtz a1, 1f |
| lw ra, THREAD_FLAGS_OFFSET(rSELF) |
| b MterpCheckSuspendAndContinue |
| 1: |
| GET_INST_OPCODE(t0) # extract opcode from rINST |
| GOTO_OPCODE(t0) # jump to next instruction |
| #endif |
| |
| %break |
| |
| .L${opcode}_finish: |
| GET_INST_OPCODE(t0) # extract opcode from rINST |
| GOTO_OPCODE(t0) # jump to next instruction |
