| %verify "executed" |
| %verify "exception handled" |
| /* |
| * Execute a "native inline" instruction. |
| * |
| * We need to call an InlineOp4Func: |
| * bool (func)(u4 arg0, u4 arg1, u4 arg2, u4 arg3, JValue* pResult) |
| * |
| * The first four args are in r0-r3, pointer to return value storage |
| * is on the stack. The function's return value is a flag that tells |
| * us if an exception was thrown. |
| */ |
| /* [opt] execute-inline vAA, {vC, vD, vE, vF}, inline@BBBB */ |
| FETCH(r10, 1) @ r10<- BBBB |
| add r1, rGLUE, #offGlue_retval @ r1<- &glue->retval |
| EXPORT_PC() @ can throw |
| sub sp, sp, #8 @ make room for arg, +64 bit align |
| mov r0, rINST, lsr #12 @ r0<- B |
| str r1, [sp] @ push &glue->retval |
| bl .L${opcode}_continue @ make call; will return after |
| add sp, sp, #8 @ pop stack |
| cmp r0, #0 @ test boolean result of inline |
| beq common_exceptionThrown @ returned false, handle exception |
| FETCH_ADVANCE_INST(3) @ advance rPC, load rINST |
| GET_INST_OPCODE(ip) @ extract opcode from rINST |
| GOTO_OPCODE(ip) @ jump to next instruction |
| %break |
| |
| /* |
| * Extract args, call function. |
| * r0 = #of args (0-4) |
| * r10 = call index |
| * lr = return addr, above [DO NOT bl out of here w/o preserving LR] |
| * |
| * Other ideas: |
| * - Use a jump table from the main piece to jump directly into the |
| * AND/LDR pairs. Costs a data load, saves a branch. |
| * - Have five separate pieces that do the loading, so we can work the |
| * interleave a little better. Increases code size. |
| */ |
| .L${opcode}_continue: |
| rsb r0, r0, #4 @ r0<- 4-r0 |
| FETCH(r9, 2) @ r9<- FEDC |
| add pc, pc, r0, lsl #3 @ computed goto, 2 instrs each |
| bl common_abort @ (skipped due to ARM prefetch) |
| 4: and ip, r9, #0xf000 @ isolate F |
| ldr r3, [rFP, ip, lsr #10] @ r3<- vF (shift right 12, left 2) |
| 3: and ip, r9, #0x0f00 @ isolate E |
| ldr r2, [rFP, ip, lsr #6] @ r2<- vE |
| 2: and ip, r9, #0x00f0 @ isolate D |
| ldr r1, [rFP, ip, lsr #2] @ r1<- vD |
| 1: and ip, r9, #0x000f @ isolate C |
| ldr r0, [rFP, ip, lsl #2] @ r0<- vC |
| 0: |
| ldr r9, .L${opcode}_table @ table of InlineOperation |
| ldr pc, [r9, r10, lsl #4] @ sizeof=16, "func" is first entry |
| @ (not reached) |
| |
| .L${opcode}_table: |
| .word gDvmInlineOpsTable |
