1 # a0 = methodToCall, a1 = returnCell, rPC = dalvikCallsite 2 lh t7, offMethod_registersSize(a0) # t7<- methodToCall->regsSize 3 lw t9, offThread_interpStackEnd(rSELF) # t9<- interpStackEnd 4 lbu t8, offThread_breakFlags(rSELF) # t8<- breakFlags 5 move a3, a1 # a3<- returnCell 6 SAVEAREA_FROM_FP(a1, rFP) # a1<- stack save area 7 sll t6, t7, 2 # multiply regsSize by 4 (4 bytes per reg) 8 sub a1, a1, t6 # a1<- newFp(old savearea-regsSize) 9 SAVEAREA_FROM_FP(t0, a1) # t0<- stack save area 10 bgeu t0, t9, 1f # bottom < interpStackEnd? 11 RETURN # return to raise stack overflow excep. 12 13 1: 14 # a1 = newFP, a0 = methodToCall, a3 = returnCell, rPC = dalvikCallsite 15 sw rPC, (offStackSaveArea_currentPc - sizeofStackSaveArea)(rFP) 16 sw rPC, (offStackSaveArea_savedPc - sizeofStackSaveArea)(a1) 17 lw rPC, offMethod_insns(a0) # rPC<- methodToCall->insns 18 19 # set up newSaveArea 20 sw rFP, (offStackSaveArea_prevFrame - sizeofStackSaveArea)(a1) 21 sw a3, (offStackSaveArea_returnAddr - sizeofStackSaveArea)(a1) 22 sw a0, (offStackSaveArea_method - sizeofStackSaveArea)(a1) 23 lw rTEMP, offMethod_nativeFunc(a0) # t9<- method->nativeFunc 24 #if !defined(WITH_SELF_VERIFICATION) 25 beqz t8, 2f # breakFlags != 0 26 RETURN # bail to the interpreter 27 2: 28 #else 29 RETURN # bail to the interpreter unconditionally 30 #endif 31 32 # go ahead and transfer control to the native code 33 lw t6, offThread_jniLocal_topCookie(rSELF) # t6<- thread->localRef->... 34 sw a1, offThread_curFrame(rSELF) # self->curFrame = newFp 35 sw zero, offThread_inJitCodeCache(rSELF) # not in the jit code cache 36 sw t6, (offStackSaveArea_localRefCookie - sizeofStackSaveArea)(a1) 37 # newFp->localRefCookie=top 38 SAVEAREA_FROM_FP(rBIX, a1) # rBIX<- new stack save area 39 move a2, a0 # a2<- methodToCall 40 move a0, a1 # a0<- newFp 41 add a1, rSELF, offThread_retval # a1<- &retval 42 move a3, rSELF # a3<- self 43 #if defined(TEMPLATE_INLINE_PROFILING) 44 # a2: methodToCall 45 # preserve rTEMP,a0-a3 46 SCRATCH_STORE(a0, 0) 47 SCRATCH_STORE(a1, 4) 48 SCRATCH_STORE(a2, 8) 49 SCRATCH_STORE(a3, 12) 50 SCRATCH_STORE(rTEMP, 16) 51 52 move a0, a2 53 move a1, rSELF 54 # a0=JNIMethod, a1=rSELF 55 la t9, dvmFastMethodTraceEnter 56 JALR(t9) # off to the native code 57 lw gp, STACK_OFFSET_GP(sp) 58 59 # restore rTEMP,a0-a3 60 SCRATCH_LOAD(rTEMP, 16) 61 SCRATCH_LOAD(a3, 12) 62 SCRATCH_LOAD(a2, 8) 63 SCRATCH_LOAD(a1, 4) 64 SCRATCH_LOAD(a0, 0) 65 66 move rOBJ, a2 # save a2 67 #endif 68 move t9, rTEMP 69 JALR(t9) # off to the native code 70 lw gp, STACK_OFFSET_GP(sp) 71 72 #if defined(TEMPLATE_INLINE_PROFILING) 73 move a0, rOBJ 74 move a1, rSELF 75 # a0=JNIMethod, a1=rSELF 76 la t9, dvmFastNativeMethodTraceExit 77 JALR(t9) 78 lw gp, STACK_OFFSET_GP(sp) 79 #endif 80 81 # native return; rBIX=newSaveArea 82 # equivalent to dvmPopJniLocals 83 lw a2, offStackSaveArea_returnAddr(rBIX) # a2 = chaining cell ret addr 84 lw a0, offStackSaveArea_localRefCookie(rBIX) # a0<- saved->top 85 lw a1, offThread_exception(rSELF) # check for exception 86 sw rFP, offThread_curFrame(rSELF) # self->curFrame = fp 87 sw a0, offThread_jniLocal_topCookie(rSELF) # new top <- old top 88 lw a0, (offStackSaveArea_currentPc - sizeofStackSaveArea)(rFP) 89 90 # a0 = dalvikCallsitePC 91 bnez a1, .LhandleException # handle exception if any 92 93 sw a2, offThread_inJitCodeCache(rSELF) # set the mode properly 94 beqz a2, 3f 95 jr a2 # go if return chaining cell still exist 96 97 3: 98 # continue executing the next instruction through the interpreter 99 la a1, .LdvmJitToInterpTraceSelectNoChain # defined in footer.S 100 lw a1, (a1) 101 add rPC, a0, 3*2 # reconstruct new rPC (advance 3 dalvik instr) 102 103 #if defined(WITH_JIT_TUNING) 104 li a0, kCallsiteInterpreted 105 #endif 106 jr a1 107
