1%verify "executed" 2%verify "exception handled" 3 /* 4 * Execute a "native inline" instruction. 5 * 6 * We need to call: 7 * dvmPerformInlineOp4Std(arg0, arg1, arg2, arg3, &retval, ref) 8 * 9 * The first four args are in r0-r3, but the last two must be pushed 10 * onto the stack. 11 */ 12 /* [opt] execute-inline vAA, {vC, vD, vE, vF}, inline@BBBB */ 13 FETCH(r10, 1) @ r10<- BBBB 14 add r1, rGLUE, #offGlue_retval @ r1<- &glue->retval 15 EXPORT_PC() @ can throw 16 sub sp, sp, #8 @ make room for arg(s) 17 mov r0, rINST, lsr #12 @ r0<- B 18 str r1, [sp] @ push &glue->retval 19 bl .L${opcode}_continue @ make call; will return after 20 add sp, sp, #8 @ pop stack 21 cmp r0, #0 @ test boolean result of inline 22 beq common_exceptionThrown @ returned false, handle exception 23 FETCH_ADVANCE_INST(3) @ advance rPC, load rINST 24 GET_INST_OPCODE(ip) @ extract opcode from rINST 25 GOTO_OPCODE(ip) @ jump to next instruction 26%break 27 28 /* 29 * Extract args, call function. 30 * r0 = #of args (0-4) 31 * r10 = call index 32 * lr = return addr, above [DO NOT bl out of here w/o preserving LR] 33 * 34 * Other ideas: 35 * - Use a jump table from the main piece to jump directly into the 36 * AND/LDR pairs. Costs a data load, saves a branch. 37 * - Have five separate pieces that do the loading, so we can work the 38 * interleave a little better. Increases code size. 39 */ 40.L${opcode}_continue: 41 rsb r0, r0, #4 @ r0<- 4-r0 42 FETCH(r9, 2) @ r9<- FEDC 43 add pc, pc, r0, lsl #3 @ computed goto, 2 instrs each 44 bl common_abort @ (skipped due to ARM prefetch) 454: and ip, r9, #0xf000 @ isolate F 46 ldr r3, [rFP, ip, lsr #10] @ r3<- vF (shift right 12, left 2) 473: and ip, r9, #0x0f00 @ isolate E 48 ldr r2, [rFP, ip, lsr #6] @ r2<- vE 492: and ip, r9, #0x00f0 @ isolate D 50 ldr r1, [rFP, ip, lsr #2] @ r1<- vD 511: and ip, r9, #0x000f @ isolate C 52 ldr r0, [rFP, ip, lsl #2] @ r0<- vC 530: 54 ldr r9, .L${opcode}_table @ table of InlineOperation 55 LDR_PC "[r9, r10, lsl #4]" @ sizeof=16, "func" is first entry 56 @ (not reached) 57 58.L${opcode}_table: 59 .word gDvmInlineOpsTable 60 61