allwinner_a64/android/art/runtime/interpreter/mterp/x86/alt_stub.S
2018-08-08 16:48:17 +08:00

19 lines
772 B
ArmAsm

/*
* Inter-instruction transfer stub. Call out to MterpCheckBefore to handle
* any interesting requests and then jump to the real instruction
* handler. Unlike the Arm handler, we can't do this as a tail call
* because rIBASE is caller save and we need to reload it.
*
* Note that unlike in the Arm implementation, we should never arrive
* here with a zero breakFlag because we always refresh rIBASE on
* return.
*/
.extern MterpCheckBefore
movl rSELF, %ecx
movl %ecx, OUT_ARG0(%esp)
leal OFF_FP_SHADOWFRAME(rFP), %eax
movl %eax, OUT_ARG1(%esp)
movl rPC, OUT_ARG2(%esp)
call SYMBOL(MterpCheckBefore) # (self, shadow_frame, dex_pc_ptr)
REFRESH_IBASE
jmp .L_op_nop+(${opnum}*${handler_size_bytes})