-/* asm_patcher_wrapper *********************************************************
-
- XXX
-
- Stack layout:
- 20 return address into JIT code (patch position)
- 16 pointer to virtual java_objectheader
- 12 machine code (which is patched back later)
- 8 unresolved class/method/field reference
- 4 data segment displacement from load instructions
- 0 patcher function pointer to call (pv is saved here afterwards)
-
-*******************************************************************************/
-
-asm_patcher_wrapper:
- mflr r0 /* get Java return address (leaf) */
- stw r0,6*4(sp) /* store it in the stub stackframe */
- /* keep stack 16-bytes aligned: 6+1+37 = 44 */
- stwu sp,-(LA_SIZE+(5+58)*4)(sp)
-
-#if defined(__DARWIN__)
- stw a0,LA_SIZE+(5+0)*4(sp) /* save argument registers */
- stw a1,LA_SIZE+(5+1)*4(sp) /* preserve linkage area (24 bytes) */
- stw a2,LA_SIZE+(5+2)*4(sp) /* and 4 bytes for 4 argument */
- stw a3,LA_SIZE+(5+3)*4(sp)
- stw a4,LA_SIZE+(5+4)*4(sp)
- stw a5,LA_SIZE+(5+5)*4(sp)
- stw a6,LA_SIZE+(5+6)*4(sp)
- stw a7,LA_SIZE+(5+7)*4(sp)
-
- stfd fa0,LA_SIZE+(5+8)*4(sp)
- stfd fa1,LA_SIZE+(5+10)*4(sp)
- stfd fa2,LA_SIZE+(5+12)*4(sp)
- stfd fa3,LA_SIZE+(5+14)*4(sp)
- stfd fa4,LA_SIZE+(5+16)*4(sp)
- stfd fa5,LA_SIZE+(5+18)*4(sp)
- stfd fa6,LA_SIZE+(5+20)*4(sp)
- stfd fa7,LA_SIZE+(5+22)*4(sp)
- stfd fa8,LA_SIZE+(5+24)*4(sp)
- stfd fa9,LA_SIZE+(5+26)*4(sp)
- stfd fa10,LA_SIZE+(5+28)*4(sp)
- stfd fa11,LA_SIZE+(5+30)*4(sp)
- stfd fa12,LA_SIZE+(5+32)*4(sp)
-
- stw t0,(LA_WORD_SIZE+5+33)*4(sp)
- stw t1,(LA_WORD_SIZE+5+34)*4(sp)
- stw t2,(LA_WORD_SIZE+5+35)*4(sp)
- stw t3,(LA_WORD_SIZE+5+36)*4(sp)
- stw t4,(LA_WORD_SIZE+5+37)*4(sp)
- stw t5,(LA_WORD_SIZE+5+38)*4(sp)
- stw t6,(LA_WORD_SIZE+5+39)*4(sp)
- stw t7,(LA_WORD_SIZE+5+40)*4(sp)
-
- stfd ft0,(LA_WORD_SIZE+5+42)*4(sp)
- stfd ft1,(LA_WORD_SIZE+5+44)*4(sp)
- stfd ft2,(LA_WORD_SIZE+5+46)*4(sp)
- stfd ft3,(LA_WORD_SIZE+5+48)*4(sp)
- stfd ft4,(LA_WORD_SIZE+5+50)*4(sp)
- stfd ft5,(LA_WORD_SIZE+5+52)*4(sp)
-#else
- SAVE_ARGUMENT_REGISTERS(LA_WORD_SIZE+1) /* save 8 int/8 float arguments */
- SAVE_TEMPORARY_REGISTERS(LA_WORD_SIZE+1+24)
-#endif
-
- stw itmp1,LA_SIZE+(5+54)*4(sp)
- stw itmp2,LA_SIZE+(5+55)*4(sp)
- stw pv,LA_SIZE+(5+56)*4(sp)
-
- addi a0,sp,LA_SIZE+(5+58)*4 /* pass SP of patcher stub */
- mr a1,pv /* pass PV */
- mr a2,r0 /* pass RA (correct for leafs) */
- bl patcher_wrapper
- stw v0,LA_SIZE+(5+57)*4(sp) /* save return value */
-
-#if defined(__DARWIN__)
- lwz a0,LA_SIZE+(5+0)*4(sp)
- lwz a1,LA_SIZE+(5+1)*4(sp)
- lwz a2,LA_SIZE+(5+2)*4(sp)
- lwz a3,LA_SIZE+(5+3)*4(sp)
- lwz a4,LA_SIZE+(5+4)*4(sp)
- lwz a5,LA_SIZE+(5+5)*4(sp)
- lwz a6,LA_SIZE+(5+6)*4(sp)
- lwz a7,LA_SIZE+(5+7)*4(sp)
-
- lfd fa0,LA_SIZE+(5+8)*4(sp)
- lfd fa1,LA_SIZE+(5+10)*4(sp)
- lfd fa2,LA_SIZE+(5+12)*4(sp)
- lfd fa3,LA_SIZE+(5+14)*4(sp)
- lfd fa4,LA_SIZE+(5+16)*4(sp)
- lfd fa5,LA_SIZE+(5+18)*4(sp)
- lfd fa6,LA_SIZE+(5+20)*4(sp)
- lfd fa7,LA_SIZE+(5+22)*4(sp)
- lfd fa8,LA_SIZE+(5+24)*4(sp)
- lfd fa9,LA_SIZE+(5+26)*4(sp)
- lfd fa10,LA_SIZE+(5+28)*4(sp)
- lfd fa11,LA_SIZE+(5+30)*4(sp)
- lfd fa12,LA_SIZE+(5+32)*4(sp)
-
- lwz t0,(LA_WORD_SIZE+5+33)*4(sp)
- lwz t1,(LA_WORD_SIZE+5+34)*4(sp)
- lwz t2,(LA_WORD_SIZE+5+35)*4(sp)
- lwz t3,(LA_WORD_SIZE+5+36)*4(sp)
- lwz t4,(LA_WORD_SIZE+5+37)*4(sp)
- lwz t5,(LA_WORD_SIZE+5+38)*4(sp)
- lwz t6,(LA_WORD_SIZE+5+39)*4(sp)
- lwz t7,(LA_WORD_SIZE+5+40)*4(sp)
-
- lfd ft0,(LA_WORD_SIZE+5+42)*4(sp)
- lfd ft1,(LA_WORD_SIZE+5+44)*4(sp)
- lfd ft2,(LA_WORD_SIZE+5+46)*4(sp)
- lfd ft3,(LA_WORD_SIZE+5+48)*4(sp)
- lfd ft4,(LA_WORD_SIZE+5+50)*4(sp)
- lfd ft5,(LA_WORD_SIZE+5+52)*4(sp)
-#else
- RESTORE_ARGUMENT_REGISTERS(LA_WORD_SIZE+1) /* restore 8 int/8 float args */
- RESTORE_TEMPORARY_REGISTERS(LA_WORD_SIZE+1+24)
-#endif
-
- lwz itmp1,LA_SIZE+(5+54)*4(sp)
- lwz itmp2,LA_SIZE+(5+55)*4(sp)
- lwz pv,LA_SIZE+(5+56)*4(sp)
- lwz itmp3,LA_SIZE+(5+57)*4(sp) /* restore return value into temp reg.*/
-
- lwz r0,(6+LA_WORD_SIZE+5+58)*4(sp) /* restore RA */
- mtlr r0
-
- mr. itmp3,itmp3 /* check for an exception */
- bne L_asm_patcher_wrapper_exception
-
- /* get return address (into JIT code) */
- lwz itmp3,(5+LA_WORD_SIZE+5+58)*4(sp)
-
- /* remove stack frame + patcher stub stack */
- addi sp,sp,(8+LA_WORD_SIZE+5+58)*4
-
- mtctr itmp3
- bctr /* jump to new patched code */
-
-L_asm_patcher_wrapper_exception:
- mr xptr,itmp3 /* get exception */
- lwz xpc,(5+LA_WORD_SIZE+5+58)*4(sp)
- addi sp,sp,(8+LA_WORD_SIZE+5+58)*4
- b L_asm_handle_exception
-