| %default { "func":"dvmInterpHandlePackedSwitch" } |
| %verify executed |
| /* |
| * 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. |
| * |
| * When the JIT is present, all targets are considered treated as |
| * a potential trace heads regardless of branch direction. |
| * |
| * for: packed-switch, sparse-switch |
| */ |
| /* op vAA, +BBBB */ |
| FETCH(r0, 1) @ r0<- bbbb (lo) |
| FETCH(r1, 2) @ r1<- BBBB (hi) |
| mov r3, rINST, lsr #8 @ r3<- AA |
| orr r0, r0, r1, lsl #16 @ r0<- BBBBbbbb |
| GET_VREG(r1, r3) @ r1<- vAA |
| add r0, rPC, r0, lsl #1 @ r0<- PC + BBBBbbbb*2 |
| bl $func @ r0<- code-unit branch offset |
| adds r1, r0, r0 @ r1<- byte offset; clear V |
| #if defined(WITH_JIT) |
| ldr r0, [rSELF, #offThread_pJitProfTable] |
| ldrle rIBASE, [rSELF, #offThread_curHandlerTable] @ refresh handler base |
| FETCH_ADVANCE_INST_RB(r1) @ update rPC, load rINST |
| cmp r0, #0 |
| bne common_updateProfile |
| #else |
| ldrle rIBASE, [rSELF, #offThread_curHandlerTable] @ refresh handler base |
| FETCH_ADVANCE_INST_RB(r1) @ update rPC, load rINST |
| #endif |
| GET_INST_OPCODE(ip) @ extract opcode from rINST |
| GOTO_OPCODE(ip) @ jump to next instruction |
