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 SAVEAREA_FROM_FP(r0, rFP) @ r0<- saveArea (old) 9 ldr r10, [r0, #offStackSaveArea_prevFrame] @ r10<- saveArea->prevFrame 10 ldr r8, [rGLUE, #offGlue_pSelfSuspendCount] @ r8<- &suspendCount 11 ldr rPC, [r0, #offStackSaveArea_savedPc] @ rPC<- saveArea->savedPc 12 ldr r9, [r0, #offStackSaveArea_returnAddr] @ r9<- chaining cell ret 13 ldr r2, [r10, #(offStackSaveArea_method - sizeofStackSaveArea)] 14 @ r2<- method we're returning to 15 ldr r3, [rGLUE, #offGlue_self] @ r3<- glue->self 16 cmp r2, #0 @ break frame? 17 beq 1f @ bail to interpreter 18 ldr r0, .LdvmJitToInterpNoChain @ defined in footer.S 19 mov rFP, r10 @ publish new FP 20 ldrne r10, [r2, #offMethod_clazz] @ r10<- method->clazz 21 ldr r8, [r8] @ r8<- suspendCount 22 23 str r2, [rGLUE, #offGlue_method]@ glue->method = newSave->method 24 ldr r1, [r10, #offClassObject_pDvmDex] @ r1<- method->clazz->pDvmDex 25 str rFP, [r3, #offThread_curFrame] @ self->curFrame = fp 26 add rPC, rPC, #6 @ publish new rPC (advance 6 bytes) 27 str r1, [rGLUE, #offGlue_methodClassDex] 28 cmp r8, #0 @ check the suspendCount 29 movne r9, #0 @ clear the chaining cell address 30 cmp r9, #0 @ chaining cell exists? 31 blxne r9 @ jump to the chaining cell 32 mov pc, r0 @ callsite is interpreted 331: 34 stmia rGLUE, {rPC, rFP} @ SAVE_PC_FP_TO_GLUE() 35 ldr r2, .LdvmMterpStdBail @ defined in footer.S 36 mov r1, #0 @ changeInterp = false 37 mov r0, rGLUE @ Expecting rGLUE in r0 38 blx r2 @ exit the interpreter 39