1 /* 2 * Unwind a frame from the Dalvik stack for compiled OP_RETURN_XXX. 3 * If the stored value in returnAddr 4 * is non-zero, the caller is compiled by the JIT thus return to the 5 * address in the code cache following the invoke instruction. Otherwise 6 * return to the special dvmJitToInterpNoChain entry point. 7 */ 8 #if defined(TEMPLATE_INLINE_PROFILING) 9 # preserve a0-a2 and ra 10 SCRATCH_STORE(a0, 0) 11 SCRATCH_STORE(a1, 4) 12 SCRATCH_STORE(a2, 8) 13 SCRATCH_STORE(ra, 12) 14 15 # a0=rSELF 16 move a0, rSELF 17 la t9, dvmFastMethodTraceExit 18 JALR(t9) 19 lw gp, STACK_OFFSET_GP(sp) 20 21 # restore a0-a2 and ra 22 SCRATCH_LOAD(ra, 12) 23 SCRATCH_LOAD(a2, 8) 24 SCRATCH_LOAD(a1, 4) 25 SCRATCH_LOAD(a0, 0) 26 #endif 27 SAVEAREA_FROM_FP(a0, rFP) # a0<- saveArea (old) 28 lw t0, offStackSaveArea_prevFrame(a0) # t0<- saveArea->prevFrame 29 lbu t1, offThread_breakFlags(rSELF) # t1<- breakFlags 30 lw rPC, offStackSaveArea_savedPc(a0) # rPC<- saveArea->savedPc 31 #if !defined(WITH_SELF_VERIFICATION) 32 lw t2, offStackSaveArea_returnAddr(a0) # t2<- chaining cell ret 33 #else 34 move t2, zero # disable chaining 35 #endif 36 lw a2, offStackSaveArea_method - sizeofStackSaveArea(t0) 37 # a2<- method we're returning to 38 #if !defined(WITH_SELF_VERIFICATION) 39 beq a2, zero, 1f # bail to interpreter 40 #else 41 bne a2, zero, 2f 42 JALR(ra) # punt to interpreter and compare state 43 # DOUG: assume this does not return ??? 44 2: 45 #endif 46 la t4, .LdvmJitToInterpNoChainNoProfile # defined in footer.S 47 lw a1, (t4) 48 move rFP, t0 # publish new FP 49 beq a2, zero, 4f 50 lw t0, offMethod_clazz(a2) # t0<- method->clazz 51 4: 52 53 sw a2, offThread_method(rSELF) # self->method = newSave->method 54 lw a0, offClassObject_pDvmDex(t0) # a0<- method->clazz->pDvmDex 55 sw rFP, offThread_curFrame(rSELF) # self->curFrame = fp 56 add rPC, rPC, 3*2 # publish new rPC 57 sw a0, offThread_methodClassDex(rSELF) 58 movn t2, zero, t1 # check the breadFlags and 59 # clear the chaining cell address 60 sw t2, offThread_inJitCodeCache(rSELF) # in code cache or not 61 beq t2, zero, 3f # chaining cell exists? 62 JALR(t2) # jump to the chaining cell 63 # DOUG: assume this does not return ??? 64 3: 65 #if defined(WITH_JIT_TUNING) 66 li a0, kCallsiteInterpreted 67 #endif 68 j a1 # callsite is interpreted 69 1: 70 sw zero, offThread_inJitCodeCache(rSELF) # reset inJitCodeCache 71 SAVE_PC_TO_SELF() # SAVE_PC_FP_TO_SELF() 72 SAVE_FP_TO_SELF() 73 la t4, .LdvmMterpStdBail # defined in footer.S 74 lw a2, (t4) 75 move a0, rSELF # Expecting rSELF in a0 76 JALR(a2) # exit the interpreter 77 # DOUG: assume this does not return ??? 78
