/* src/vm/jit/alpha/asmpart.S - Java-C interface functions for alpha Copyright (C) 1996-2005 R. Grafl, A. Krall, C. Kruegel, C. Oates, R. Obermaisser, M. Platter, M. Probst, S. Ring, E. Steiner, C. Thalinger, D. Thuernbeck, P. Tomsich, C. Ullrich, J. Wenninger, Institut f. Computersprachen - TU Wien This file is part of CACAO. This program is free software; you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation; either version 2, or (at your option) any later version. This program is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details. You should have received a copy of the GNU General Public License along with this program; if not, write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. Contact: cacao@complang.tuwien.ac.at Authors: Andreas Krall Reinhard Grafl Changes: Joseph Wenninger Christian Thalinger $Id: asmpart.S 3285 2005-09-27 14:12:36Z twisti $ */ #include "config.h" #include "vm/jit/methodheader.h" #include "vm/jit/alpha/offsets.h" #include "vm/jit/alpha/md-asm.h" .text .set noat .set noreorder /********************* exported functions and variables ***********************/ .globl asm_sync_instruction_cache .globl has_no_x_instr_set .globl asm_calljavafunction .globl asm_calljavafunction_int .globl asm_calljavafunction2 .globl asm_calljavafunction2int .globl asm_calljavafunction2long .globl asm_calljavafunction2float .globl asm_calljavafunction2double .globl asm_call_jit_compiler .globl asm_handle_exception .globl asm_handle_nat_exception .globl asm_wrapper_patcher .globl asm_perform_threadswitch .globl asm_initialize_thread_stack .globl asm_switchstackandcall .globl asm_criticalsections .globl asm_getclassvalues_atomic /* asm_sync_instruction_cache ************************************************** XXX *******************************************************************************/ .ent asm_sync_instruction_cache asm_sync_instruction_cache: call_pal PAL_imb /* synchronize instruction cache */ jmp zero,(ra) .end asm_sync_instruction_cache /*********************** function has_no_x_instr_set *************************** * * * determines if the byte support instruction set (21164a and higher) * * is available. * * * *******************************************************************************/ .ent has_no_x_instr_set has_no_x_instr_set: .long 0x47e03c20 /* amask 1,v0 */ jmp zero,(ra) /* return */ .end has_no_x_instr_set /********************* function asm_calljavafunction *************************** * * * This function calls a Java-method (which possibly needs compilation) * * with up to 4 address parameters. * * * * This functions calls the JIT-compiler which eventually translates the * * method into machine code. * * * * C-prototype: * * javaobject_header *asm_calljavafunction (methodinfo *m, * * void *arg1, void *arg2, void *arg3, void *arg4); * * * *******************************************************************************/ .ent asm_calljavafunction call_name: .ascii "calljavafunction\0\0" .align 2 /*3*/ .quad 0 /* catch type all */ .quad calljava_xhandler /* handler pc */ .quad calljava_xhandler /* end pc */ .quad asm_calljavafunction /* start pc */ .long 1 /* extable size */ .long 0 /* ALIGNMENT PADDING */ .quad 0 /* line number table start */ .quad 0 /* line number table size */ .long 0 /* ALIGNMENT PADDING */ .long 0 /* fltsave */ .long 0 /* intsave */ .long 0 /* isleaf */ .long 0 /* IsSync */ .long 32 /* frame size */ .quad 0 /* method pointer (pointer to name) */ asm_calljavafunction: asm_calljavafunction_int: ldgp gp,0(pv) lda sp,-32(sp) /* allocate stack space */ stq gp,24(sp) /* save global pointer */ stq ra,0(sp) /* save return address */ stq a0,16(sp) /* save method pointer for compiler */ lda v0,16(sp) /* pass pointer to method pointer via v0*/ mov a1,a0 /* pass the remaining parameters */ mov a2,a1 mov a3,a2 mov a4,a3 lda itmp2,asm_call_jit_compiler/* fake virtual function call (2 instr)*/ stq itmp2,8(sp) /* store function address */ mov sp,itmp2 /* set method pointer */ ldq pv,8(itmp2) /* method call as in Java */ jmp ra,(pv) /* call JIT compiler */ calljava_jit: lda pv,(asm_calljavafunction - calljava_jit)(ra) calljava_return: ldq ra,0(sp) /* restore return address */ ldq gp,24(sp) /* restore global pointer */ lda sp,32(sp) /* free stack space */ calljava_ret: jmp zero,(ra) calljava_xhandler: ldq gp,24(sp) /* restore global pointer */ mov xptr,a0 jsr ra,builtin_throw_exception ldq ra,0(sp) /* restore return address */ lda sp,32(sp) /* free stack space */ mov zero,v0 /* return NULL */ jmp zero,(ra) .end asm_calljavafunction .ent asm_calljavafunction2 call_name2: .align 3 .quad 0 /* catch type all */ .quad calljava_xhandler2 /* handler pc */ .quad calljava_xhandler2 /* end pc */ .quad asm_calljavafunction2 /* start pc */ .long 1 /* extable size */ .long 0 /* ALIGNMENT PADDING */ .quad 0 /* line number table start */ .quad 0 /* line number table size */ .long 0 /* ALIGNMENT PADDING */ .long 0 /* fltsave */ .long 1 /* intsave */ .long 0 /* isleaf */ .long 0 /* IsSync */ .long 40 /* frame size */ .quad 0 /* method pointer (pointer to name) */ asm_calljavafunction2: asm_calljavafunction2int: asm_calljavafunction2long: asm_calljavafunction2float: asm_calljavafunction2double: ldgp gp,0(pv) lda sp,-5*8(sp) /* allocate stack space */ stq ra,0*8(sp) /* save return address */ stq gp,1*8(sp) /* save global pointer */ stq s6,3*8(sp) stq a0,4*8(sp) /* save method pointer for compiler */ mov a3,t0 /* pointer to arg block */ mov a1,s6 /* arg count */ ble s6,calljava_argsloaded lda s6,-1(s6) ldq a0,offjniitem(t0) ldt $f16,offjniitem(t0) ble s6,calljava_argsloaded lda s6,-1(s6) ldq a1,offjniitem+sizejniblock*1(t0) ldt $f17,offjniitem+sizejniblock*1(t0) ble s6,calljava_argsloaded lda s6,-1(s6) ldq a2,offjniitem+sizejniblock*2(t0) ldt $f18,offjniitem+sizejniblock*2(t0) ble s6,calljava_argsloaded lda s6,-1(s6) ldq a3,offjniitem+sizejniblock*3(t0) ldt $f19,offjniitem+sizejniblock*3(t0) ble s6,calljava_argsloaded lda s6,-1(s6) ldq a4,offjniitem+sizejniblock*4(t0) ldt $f20,offjniitem+sizejniblock*4(t0) ble s6,calljava_argsloaded lda s6,-1(s6) ldq a5,offjniitem+sizejniblock*5(t0) ldt $f21,offjniitem+sizejniblock*5(t0) calljava_argsloaded: mov sp,t4 ble s6,calljava_nocopy negq s6,t1 s8addq t1,sp,sp s8addq t1,t4,t2 calljava_copyloop: ldq t3,offjniitem+sizejniblock*6(t0) stq t3,0(t2) lda t1,1(t1) lda t0,sizejniblock(t0) lda t2,8(t2) bne t1,calljava_copyloop calljava_nocopy: lda v0,4*8(t4) /* pass pointer to method pointer via v0*/ lda itmp2,asm_call_jit_compiler/* fake virtual function call (2 instr)*/ stq itmp2,16(t4) /* store function address */ lda itmp2,8(t4) /* set method pointer */ ldq pv,8(itmp2) /* method call as in Java */ jmp ra,(pv) /* call JIT compiler */ calljava_jit2: lda pv,(asm_calljavafunction2 - calljava_jit2)(ra) s8addq s6,sp,sp calljava_return2: ldq ra,0*8(sp) /* restore return address */ ldq gp,1*8(sp) /* restore global pointer */ ldq s6,3*8(sp) lda sp,5*8(sp) /* free stack space */ calljava_ret2: jmp zero,(ra) calljava_xhandler2: s8addq s6,sp,sp ldq gp,1*8(sp) /* restore global pointer */ mov itmp1,a0 jsr ra,builtin_throw_exception ldq ra,0*8(sp) /* restore return address */ ldq s6,3*8(sp) lda sp,5*8(sp) /* free stack space */ mov zero,v0 /* return NULL */ jmp zero,(ra) .end asm_calljavafunction2 /****************** function asm_call_jit_compiler ***************************** * * * invokes the compiler for untranslated JavaVM methods. * * * * Register R0 contains a pointer to the method info structure (prepared * * by createcompilerstub). Using the return address in R26 and the * * offset in the LDA instruction or using the value in methodptr R28 the * * patching address for storing the method address can be computed: * * * * method address was either loaded using * * M_LDQ (REG_PV, REG_PV, a) ; invokestatic/special ($27) * * M_LDA (REG_PV, REG_RA, low) * * M_LDAH(REG_PV, REG_RA, high) ; optional * * or * * M_LDQ (REG_PV, REG_METHODPTR, m) ; invokevirtual/interface ($28) * * in the static case the method pointer can be computed using the * * return address and the lda function following the jmp instruction * * * *******************************************************************************/ .ent asm_call_jit_compiler asm_call_jit_compiler: ldgp gp,0(pv) ldl t8,-8(ra) /* load instruction LDQ PV,xxx($yy) */ srl t8,16,t8 /* shift right register number $yy */ and t8,31,t8 /* isolate register number */ subl t8,28,t8 /* test for REG_METHODPTR */ beq t8,noregchange ldl t8,0(ra) /* load instruction LDA PV,xxx(RA) */ sll t8,48,t8 sra t8,48,t8 /* isolate offset */ addq t8,ra,$28 /* compute update address */ ldl t8,4(ra) /* load instruction LDAH PV,xxx(PV) */ srl t8,16,t8 /* isolate instruction code */ lda t8,-0x177b(t8) /* test for LDAH */ bne t8,noregchange ldl t8,4(ra) /* load instruction LDAH PV,xxx(PV) */ sll t8,16,t8 /* compute high offset */ addl t8,0,t8 /* sign extend high offset */ addq t8,$28,$28 /* compute update address */ noregchange: lda sp,-(15*8+sizestackframeinfo)(sp) /* reserve stack space */ SAVE_ARGUMENT_REGISTERS(0) /* save 6 int/6 float argument registers */ stq $28,12*8(sp) /* save method pointer */ stq ra,13*8(sp) /* save return address */ stq v0,14*8(sp) /* save methodinfo pointer */ lda a0,15*8(sp) /* create stackframe info */ mov zero,a1 /* we don't have pv handy */ lda a2,15*8+sizestackframeinfo(sp) /* pass java sp */ mov ra,a3 /* pass Java ra */ mov a3,a4 /* xpc is equal to ra */ jsr ra,stacktrace_create_extern_stackframeinfo ldgp gp,0(ra) ldq v0,14*8(sp) /* restore methodinfo pointer */ ldq a0,0(v0) /* pass methodinfo pointer */ jsr ra,jit_compile /* call jit compiler */ ldgp gp,0(ra) stq v0,14*8(sp) /* save return value */ lda a0,15*8(sp) /* remove stackframe info */ jsr ra,stacktrace_remove_stackframeinfo ldgp gp,0(ra) RESTORE_ARGUMENT_REGISTERS(0) /* restore 6 int/6 float argument registers */ ldq $28,12*8(sp) /* load method pointer */ ldq ra,13*8(sp) /* load return address */ ldq v0,14*8(sp) /* restore return value */ lda sp,15*8+sizestackframeinfo(sp) /* deallocate stack area */ beq v0,L_asm_call_jit_compiler_exception ldl t8,-8(ra) /* load instruction LDQ PV,xxx($yy) */ sll t8,48,t8 sra t8,48,t8 /* isolate offset */ addq t8,$28,t8 /* compute update address via method pointer*/ stq v0,0(t8) /* save new method address there */ call_pal PAL_imb /* synchronise instruction cache */ mov v0,pv /* load method address into pv */ jmp zero,(pv) /* and call method. The method returns */ /* directly to the caller (ra). */ L_asm_call_jit_compiler_exception: #if defined(USE_THREADS) && defined(NATIVE_THREADS) subq sp,1*8,sp stq ra,0*8(sp) /* save return address (xpc) */ jsr ra,builtin_asm_get_exceptionptrptr ldq ra,0*8(sp) /* restore return address (xpc) */ addq sp,1*8,sp #else lda v0,_exceptionptr #endif ldq xptr,0(v0) /* get the exception pointer */ stq zero,0(v0) /* clear the exception pointer */ subq ra,4,xpc br asm_handle_nat_exception .end asm_call_jit_compiler /********************* function asm_handle_exception *************************** * * * This function handles an exception. It does not use the usual calling * * conventions. The exception pointer is passed in REG_ITMP1 and the * * pc from the exception raising position is passed in REG_ITMP2. It searches * * the local exception table for a handler. If no one is found, it unwinds * * stacks and continues searching the callers. * * * * void asm_handle_exception (exceptionptr, exceptionpc); * * * *******************************************************************************/ .ent asm_handle_nat_exception asm_handle_nat_exception: ldl t0,0(ra) /* load instruction LDA PV,xxx(RA) */ sll t0,48,t0 sra t0,48,t0 /* isolate offset */ addq t0,ra,pv /* compute update address */ ldl t0,4(ra) /* load instruction LDAH PV,xxx(PV) */ srl t0,16,t0 /* isolate instruction code */ lda t0,-0x177b(t0) /* test for LDAH */ bne t0,asm_handle_exception ldl t0,4(ra) /* load instruction LDAH PV,xxx(PV) */ sll t0,16,t0 /* compute high offset */ addl t0,0,t0 /* sign extend high offset */ addq t0,pv,pv /* compute update address */ .aent asm_handle_exception asm_handle_exception: lda sp,-18*8(sp) /* allocate stack */ stq t0,0*8(sp) /* save possible used registers */ stq t1,1*8(sp) /* also registers used by trace_exception */ stq t2,2*8(sp) stq t3,3*8(sp) stq t4,4*8(sp) stq t5,5*8(sp) stq t6,6*8(sp) stq t7,7*8(sp) stq t8,8*8(sp) stq t9,9*8(sp) stq t10,10*8(sp) stq v0,11*8(sp) stq a0,12*8(sp) stq a1,13*8(sp) stq a2,14*8(sp) stq a3,15*8(sp) stq a4,16*8(sp) stq a5,17*8(sp) lda t3,1(zero) /* set no unwind flag */ ex_stack_loop: lda sp,-5*8(sp) /* allocate stack */ stq xptr,0*8(sp) /* save used register */ stq xpc,1*8(sp) stq pv,2*8(sp) stq ra,3*8(sp) stq t3,4*8(sp) mov xptr,a0 ldq a1,MethodPointer(pv) mov xpc,a2 /* mov t3,a3 */ lda a3,0(zero) lda a4,1(zero) br ra,ex_trace /* set ra for gp loading */ ex_trace: ldgp gp,0(ra) /* load gp */ jsr ra,builtin_trace_exception /* trace_exception(xptr,methodptr) */ ldq xptr,0*8(sp) /* restore used register */ ldq xpc,1*8(sp) ldq pv,2*8(sp) ldq ra,3*8(sp) ldq t3,4*8(sp) lda sp,5*8(sp) /* deallocate stack */ ldl t0,ExTableSize(pv) /* t0 = exception table size */ beq t0,empty_table /* if empty table skip */ lda t1,ExTableStart(pv) /* t1 = start of exception table */ ex_table_loop: ldq t2,ExStartPC(t1) /* t2 = exception start pc */ cmple t2,xpc,t2 /* t2 = (startpc <= xpc) */ beq t2,ex_table_cont /* if (false) continue */ ldq t2,ExEndPC(t1) /* t2 = exception end pc */ cmplt xpc,t2,t2 /* t2 = (xpc < endpc) */ beq t2,ex_table_cont /* if (false) continue */ ldq a1,ExCatchType(t1) /* arg1 = exception catch type */ beq a1,ex_handle_it /* NULL catches everything */ ldl itmp3,offclassloaded(a1) bne itmp3,L_class_loaded subq sp,8*8,sp /* allocate stack */ stq t0,0*8(sp) /* save used register */ stq t1,1*8(sp) stq t3,2*8(sp) stq xptr,3*8(sp) stq xpc,4*8(sp) stq pv,5*8(sp) stq ra,6*8(sp) stq a1,7*8(sp) mov a1,a0 br ra,L_class_load_ra /* set ra for gp loading */ L_class_load_ra: ldgp gp,0(ra) /* load gp */ jsr ra,load_class_bootstrap ldq t0,0*8(sp) /* restore used register */ ldq t1,1*8(sp) ldq t3,2*8(sp) ldq xptr,3*8(sp) ldq xpc,4*8(sp) ldq pv,5*8(sp) ldq ra,6*8(sp) ldq a1,7*8(sp) addq sp,8*8,sp /* deallocate stack */ L_class_loaded: ldl itmp3,offclasslinked(a1) subq sp,8*8,sp /* allocate stack */ stq a1,7*8(sp) bne itmp3,L_class_linked stq t0,0*8(sp) /* save used register */ stq t1,1*8(sp) stq t3,2*8(sp) stq xptr,3*8(sp) stq xpc,4*8(sp) stq pv,5*8(sp) stq ra,6*8(sp) mov a1,a0 br ra,L_class_link_ra /* set ra for gp loading */ L_class_link_ra: ldgp gp,0(ra) /* load gp */ jsr ra,link_class ldq t0,0*8(sp) /* restore used register */ ldq t1,1*8(sp) ldq t3,2*8(sp) ldq xptr,3*8(sp) ldq xpc,4*8(sp) ldq pv,5*8(sp) ldq ra,6*8(sp) L_class_linked: _crit_restart1: ldq a1,7*8(sp) _crit_begin1: ldq a0,offobjvftbl(xptr) /* a0 = vftblptr(xptr) */ ldq a1,offclassvftbl(a1) /* a1 = vftblptr(catchtype) class (not obj) */ ldl a0,offbaseval(a0) /* a0 = baseval(xptr) */ ldl v0,offbaseval(a1) /* a2 = baseval(catchtype) */ ldl a1,offdiffval(a1) /* a1 = diffval(catchtype) */ _crit_end1: subl a0,v0,a0 /* a0 = baseval(xptr) - baseval(catchtype) */ cmpule a0,a1,v0 /* v0 = xptr is instanceof catchtype */ addq sp,8*8,sp /* deallocate stack */ beq v0,ex_table_cont /* if (false) continue */ ex_handle_it: ldq xpc,ExHandlerPC(t1) /* xpc = exception handler pc */ beq t3,ex_jump /* if (!(no stack unwinding) skip */ ldq t0,0*8(sp) /* restore possible used registers */ ldq t1,1*8(sp) /* also registers used by trace_exception */ ldq t2,2*8(sp) ldq t3,3*8(sp) ldq t4,4*8(sp) ldq t5,5*8(sp) ldq t6,6*8(sp) ldq t7,7*8(sp) ldq t8,8*8(sp) ldq t9,9*8(sp) ldq t10,10*8(sp) ldq v0,11*8(sp) ldq a0,12*8(sp) ldq a1,13*8(sp) ldq a2,14*8(sp) ldq a3,15*8(sp) ldq a4,16*8(sp) ldq a5,17*8(sp) lda sp,18*8(sp) /* deallocate stack */ ex_jump: jmp zero,(xpc) /* jump to the handler */ ex_table_cont: lda t1,ExEntrySize(t1) /* next exception table entry */ subl t0,1,t0 /* decrement entry counter */ bgt t0,ex_table_loop /* if (t0 > 0) next entry */ empty_table: beq t3,ex_already_cleared /* if here the first time, then */ lda sp,18*8(sp) /* deallocate stack and */ clr t3 /* clear the no unwind flag */ ex_already_cleared: ldl t0,IsSync(pv) /* t0 = SyncOffset */ beq t0,no_monitor_exit /* if zero no monitorexit */ #if defined(USE_THREADS) addq sp,t0,t0 /* add stackptr to Offset */ ldq a0,-8(t0) /* load monitorexit pointer */ lda sp,-7*8(sp) /* allocate stack */ stq t0,0*8(sp) /* save used register */ stq t1,1*8(sp) stq t3,2*8(sp) stq xptr,3*8(sp) stq xpc,4*8(sp) stq pv,5*8(sp) stq ra,6*8(sp) br ra,ex_mon_load /* set ra for gp loading */ ex_mon_load: ldgp gp,0(ra) /* load gp */ jsr ra,builtin_monitorexit/* builtin_monitorexit(objectptr) */ ldq t0,0*8(sp) /* restore used register */ ldq t1,1*8(sp) ldq t3,2*8(sp) ldq xptr,3*8(sp) ldq xpc,4*8(sp) ldq pv,5*8(sp) ldq ra,6*8(sp) lda sp,7*8(sp) /* deallocate stack */ #endif no_monitor_exit: ldl t0,FrameSize(pv) /* t0 = frame size */ addq sp,t0,sp /* unwind stack */ mov sp,t0 /* t0 = pointer to save area */ ldl t1,IsLeaf(pv) /* t1 = is leaf procedure */ bne t1,ex_no_restore /* if (leaf) skip */ ldq ra,-8(t0) /* restore ra */ lda t0,-8(t0) /* t0-- */ ex_no_restore: mov ra,xpc /* the new xpc is ra */ ldl t1,IntSave(pv) /* t1 = saved int register count */ br t2,ex_int1 /* t2 = current pc */ ex_int1: lda t2,44(t2) /* lda t2,ex_int2-ex_int1(t2) !!!!!!!!!!!!! */ negl t1,t1 /* negate register count */ s4addq t1,t2,t2 /* t2 = ex_int_sav - 4 * register count */ jmp zero,(t2) /* jump to save position */ ldq s0,-56(t0) ldq s1,-48(t0) ldq s2,-40(t0) ldq s3,-32(t0) ldq s4,-24(t0) ldq s5,-16(t0) ldq s6,-8(t0) ex_int2: s8addq t1,t0,t0 /* t0 = t0 - 8 * register count */ ldl t1,FltSave(pv) /* t1 = saved flt register count */ br t2,ex_flt1 /* t2 = current pc */ ex_flt1: lda t2,48(t2) /* lda t2,ex_flt2-ex_flt1(t2) !!!!!!!!!!!!! */ negl t1,t1 /* negate register count */ s4addq t1,t2,t2 /* t2 = ex_flt_sav - 4 * register count */ jmp zero,(t2) /* jump to save position */ ldt fs0,-64(t0) ldt fs1,-56(t0) ldt fs2,-48(t0) ldt fs3,-40(t0) ldt fs4,-32(t0) ldt fs5,-24(t0) ldt fs6,-16(t0) ldt fs7,-8(t0) ex_flt2: ldl t0,0(ra) /* load instruction LDA PV,xxx(RA) */ sll t0,48,t0 sra t0,48,t0 /* isolate offset */ addq t0,ra,pv /* compute update address */ ldl t0,4(ra) /* load instruction LDAH PV,xxx(PV) */ srl t0,16,t0 /* isolate instruction code */ lda t0,-0x177b(t0) /* test for LDAH */ bne t0,ex_stack_loop ldl t0,4(ra) /* load instruction LDAH PV,xxx(RA) */ sll t0,16,t0 /* compute high offset */ addl t0,0,t0 /* sign extend high offset */ addq t0,pv,pv /* compute update address */ br ex_stack_loop .end asm_handle_nat_exception /* asm_wrapper_patcher ********************************************************* XXX Stack layout: 40 return address into JIT code (patch position) 32 pointer to virtual java_objectheader 24 machine code (which is patched back later) 16 unresolved class/method/field reference 8 data segment displacement from load instructions 0 patcher function pointer to call (pv afterwards) ATTENTION: itmp3 == gp! But we don't need gp do call the patcher function. *******************************************************************************/ .ent asm_wrapper_patcher asm_wrapper_patcher: lda sp,-((12+27+4)*8+sizestackframeinfo)(sp) /* create stack frame */ SAVE_ARGUMENT_REGISTERS(0) /* save 6 int/6 float argument registers */ SAVE_TEMPORARY_REGISTERS(12) /* save 11 int/16 float temporary registers */ stq itmp1,(12+27+0)*8(sp) /* save itmp1 */ stq itmp2,(12+27+1)*8(sp) /* save itmp2 */ stq ra,(12+27+2)*8(sp) /* save method return address (for leafs) */ stq pv,(12+27+3)*8(sp) /* save pv of calling java function */ br ra,L_asm_wrapper_patcher_load_gp L_asm_wrapper_patcher_load_gp: ldgp gp,0(ra) /* load gp (it's not set correctly in jit) */ lda a0,(12+27+4)*8(sp) /* create stackframe info */ mov pv,a1 /* pass java pv */ lda a2,((6+12+27+4)*8+sizestackframeinfo)(sp) /* pass java sp */ ldq a3,(12+27+2)*8(sp) /* this is correct for leafs */ ldq a4,((5+12+27+4)*8+sizestackframeinfo)(sp) /* pass xpc */ jsr ra,stacktrace_create_extern_stackframeinfo ldgp gp,0(ra) lda a0,((0+12+27+4)*8+sizestackframeinfo)(sp) /* pass sp */ ldq pv,((0+12+27+4)*8+sizestackframeinfo)(sp) /* get function pointer */ ldq itmp1,(12+27+3)*8(sp) /* save pv to the position of fp */ stq itmp1,((0+12+27+4)*8+sizestackframeinfo)(sp) jmp ra,(pv) /* call the patcher function */ ldgp gp,0(ra) lda a0,(12+27+4)*8(sp) /* remove stackframe info */ jsr ra,stacktrace_remove_stackframeinfo ldgp gp,0(ra) RESTORE_ARGUMENT_REGISTERS(0) /* restore 6 int/6 float argument registers */ RESTORE_TEMPORARY_REGISTERS(12)/* restore 11 integer temporary registers */ ldq itmp1,(12+27+0)*8(sp) /* restore itmp1 */ ldq itmp2,(12+27+1)*8(sp) /* restore itmp2 */ ldq ra,(12+27+2)*8(sp) /* restore method return address (for leafs)*/ ldq pv,(12+27+3)*8(sp) /* restore pv of calling java function */ ldq itmp3,((5+12+27+4)*8+sizestackframeinfo)(sp)/* get RA to jit code */ lda sp,((6+12+27+4)*8+sizestackframeinfo)(sp) /* remove stack frame */ beq v0,L_asm_wrapper_patcher_exception jmp zero,(itmp3) /* jump to new patched code */ L_asm_wrapper_patcher_exception: mov itmp3,xpc /* return address into JIT code is xpc */ br itmp1,L_asm_wrapper_patcher_exception_load_gp L_asm_wrapper_patcher_exception_load_gp: ldgp gp,0(itmp1) /* itmp3 == gp, load the current gp */ #if defined(USE_THREADS) && defined(NATIVE_THREADS) subq sp,3*8,sp stq xpc,0*8(sp) /* save return address (xpc) */ stq ra,1*8(sp) stq pv,2*8(sp) jsr ra,builtin_asm_get_exceptionptrptr ldq xpc,0*8(sp) /* restore return address (xpc) */ ldq ra,1*8(sp) ldq pv,2*8(sp) addq sp,3*8,sp #else lda v0,_exceptionptr #endif ldq xptr,0(v0) /* get the exception pointer */ stq zero,0(v0) /* clear the exception pointer */ br asm_handle_exception /* we have the pv of the calling java func. */ .end asm_wrapper_patcher /******************* function asm_initialize_thread_stack ********************** * * * initialized a thread stack * * * *******************************************************************************/ .ent asm_initialize_thread_stack asm_initialize_thread_stack: lda a1,-128(a1) stq zero, 0(a1) stq zero, 8(a1) stq zero, 16(a1) stq zero, 24(a1) stq zero, 32(a1) stq zero, 40(a1) stq zero, 48(a1) stt fzero, 56(a1) stt fzero, 64(a1) stt fzero, 72(a1) stt fzero, 80(a1) stt fzero, 88(a1) stt fzero, 96(a1) stt fzero, 104(a1) stt fzero, 112(a1) stq a0, 120(a1) mov a1, v0 jmp zero,(ra) .end asm_initialize_thread_stack /******************* function asm_perform_threadswitch ************************* * * * void asm_perform_threadswitch (u1 **from, u1 **to, u1 **stackTop); * * * * performs a threadswitch * * * *******************************************************************************/ .ent asm_perform_threadswitch asm_perform_threadswitch: subq sp,128,sp stq s0, 0(sp) stq s1, 8(sp) stq s2, 16(sp) stq s3, 24(sp) stq s4, 32(sp) stq s5, 40(sp) stq s6, 48(sp) stt fs0, 56(sp) stt fs1, 64(sp) stt fs2, 72(sp) stt fs3, 80(sp) stt fs4, 88(sp) stt fs5, 96(sp) stt fs6, 104(sp) stt fs7, 112(sp) stq ra, 120(sp) stq sp, 0(a0) stq sp, 0(a2) ldq sp, 0(a1) ldq s0, 0(sp) ldq s1, 8(sp) ldq s2, 16(sp) ldq s3, 24(sp) ldq s4, 32(sp) ldq s5, 40(sp) ldq s6, 48(sp) ldt fs0, 56(sp) ldt fs1, 64(sp) ldt fs2, 72(sp) ldt fs3, 80(sp) ldt fs4, 88(sp) ldt fs5, 96(sp) ldt fs6, 104(sp) ldt fs7, 112(sp) ldq ra, 120(sp) mov ra, pv addq sp, 128, sp jmp zero,(ra) .end asm_perform_threadswitch /********************* function asm_switchstackandcall ************************* * * * void *asm_switchstackandcall (void *stack, void *func, void **stacktopsave, * * void *p); * * * * Switches to a new stack, calls a function and switches back. * * a0 new stack pointer * * a1 function pointer * * a2 pointer to variable where stack top should be stored * * a3 pointer to user data, is passed to the function * * * *******************************************************************************/ .ent asm_switchstackandcall asm_switchstackandcall: lda a0,-2*8(a0) /* allocate new stack */ stq ra,0(a0) /* save return address on new stack */ stq sp,1*8(a0) /* save old stack pointer on new stack */ stq sp,0(a2) /* save old stack pointer to variable */ mov a0,sp /* switch to new stack */ mov a1,pv /* load function pointer */ mov a3,a0 /* pass pointer */ jmp ra,(pv) /* and call function */ ldq ra,0(sp) /* load return address */ ldq sp,1*8(sp) /* switch to old stack */ jmp zero,(ra) /* return */ .end asm_switchstackandcall .ent asm_getclassvalues_atomic asm_getclassvalues_atomic: _crit_restart2: _crit_begin2: ldl t0,offbaseval(a0) ldl t1,offdiffval(a0) ldl t2,offbaseval(a1) _crit_end2: stl t0,offcast_super_baseval(a2) stl t1,offcast_super_diffval(a2) stl t2,offcast_sub_baseval(a2) jmp zero,(ra) .end asm_getclassvalues_atomic .data asm_criticalsections: #if defined(USE_THREADS) && defined(NATIVE_THREADS) .quad _crit_begin1 .quad _crit_end1 .quad _crit_restart1 .quad _crit_begin2 .quad _crit_end2 .quad _crit_restart2 #endif .quad 0 /* * These are local overrides for various environment variables in Emacs. * Please do not remove this and leave it at the end of the file, where * Emacs will automagically detect them. * --------------------------------------------------------------------- * Local variables: * mode: asm * indent-tabs-mode: t * c-basic-offset: 4 * tab-width: 4 * End: */