Authors: Andreas Krall
Reinhard Grafl
- $Id: asmpart.S 967 2004-03-18 14:29:03Z jowenn $
+ $Id: asmpart.S 1060 2004-05-16 13:44:31Z twisti $
*/
-
+
+#include "config.h"
#include "offsets.h"
+
+#define MethodPointer -8
+#define FrameSize -12
+#define IsSync -16
+#define IsLeaf -20
+#define IntSave -24
+#define FltSave -28
+/* DEFINE LINE NUMBER STUFF HERE */
+#define ExTableSize -56
+#define ExTableStart -56
+
+#define ExEntrySize -32
+#define ExStartPC -8
+#define ExEndPC -16
+#define ExHandlerPC -24
+#define ExCatchType -32
+
+
#define v0 $0
#define t0 $1
.globl asm_calljavafunction2double
.globl asm_calljavafunction2long
.globl asm_call_jit_compiler
- .globl asm_dumpregistersandcall
.globl asm_handle_exception
.globl asm_handle_nat_exception
.globl asm_check_clinit
/*************************** imported functions *******************************/
.globl jit_compile
+ .globl _exceptionptr
.globl builtin_monitorexit
.globl builtin_throw_exception
.globl builtin_trace_exception
.end has_no_x_instr_set
-/********************* function synchronize_caches ****************************/
-
- .ent synchronize_caches
-
-synchronize_caches:
- call_pal PAL_imb /* synchronise instruction cache */
- jmp zero,(ra) /* return */
-
- .end synchronize_caches
-
-
-#define MethodPointer -8
-#define FrameSize -12
-#define IsSync -16
-#define IsLeaf -20
-#define IntSave -24
-#define FltSave -28
-/* DEFINE LINE NUMBER STUFF HERE */
-#define ExTableSize -56
-#define ExTableStart -56
-
-#define ExEntrySize -32
-#define ExStartPC -8
-#define ExEndPC -16
-#define ExHandlerPC -24
-#define ExCatchType -32
-
/********************* function asm_calljavafunction ***************************
* *
* This function calls a Java-method (which possibly needs compilation) *
.end asm_call_jit_compiler
-/****************** function asm_dumpregistersandcall **************************
-* *
-* This funtion saves all callee saved registers and calls the function *
-* which is passed as parameter. *
-* *
-* This function is needed by the garbage collector, which needs to access *
-* all registers which are stored on the stack. Unused registers are *
-* cleared to avoid interferances with the GC. *
-* *
-* void asm_dumpregistersandcall (functionptr f); *
-* *
-*******************************************************************************/
-
- .ent asm_dumpregistersandcall
-asm_dumpregistersandcall:
- lda sp,-16*8(sp) /* allocate stack */
- stq ra,0(sp) /* save return address */
-
- stq s0,1*8(sp) /* save all callee saved registers */
- stq s1,2*8(sp) /* intialize the remaining registers */
- stq s2,3*8(sp)
- stq s3,4*8(sp)
- stq s4,5*8(sp)
- stq s5,6*8(sp)
- stq s6,7*8(sp)
- stt $f2,8*8(sp)
- stt $f3,9*8(sp)
- stt $f4,10*8(sp)
- stt $f5,11*8(sp)
- stt $f6,12*8(sp)
- stt $f7,13*8(sp)
- stt $f8,14*8(sp)
- stt $f9,15*8(sp)
-
- clr v0 /* intialize the remaining registers */
- clr t0
- clr t1
- clr t2
- clr t3
- clr t4
- clr t5
- clr t6
- clr t7
- clr a1
- clr a2
- clr a3
- clr a4
- clr a5
- clr t8
- clr t9
- clr t10
- clr t11
- clr t12
- clr $28
- clr $29
- cpys $f31,$f31,$f0
- cpys $f31,$f31,$f1
- cpys $f31,$f31,$f10
- cpys $f31,$f31,$f11
- cpys $f31,$f31,$f12
- cpys $f31,$f31,$f13
- cpys $f31,$f31,$f14
- cpys $f31,$f31,$f15
- cpys $f31,$f31,$f16
- cpys $f31,$f31,$f17
- cpys $f31,$f31,$f18
- cpys $f31,$f31,$f19
- cpys $f31,$f31,$f20
- cpys $f31,$f31,$f21
- cpys $f31,$f31,$f22
- cpys $f31,$f31,$f23
- cpys $f31,$f31,$f24
- cpys $f31,$f31,$f25
- cpys $f31,$f31,$f26
- cpys $f31,$f31,$f27
- cpys $f31,$f31,$f28
- cpys $f31,$f31,$f29
- cpys $f31,$f31,$f30
-
- mov a0,pv /* load function pointer */
- jmp ra,(pv) /* and call function */
-
- ldq ra,0(sp) /* load return address */
- lda sp,16*8(sp) /* deallocate stack */
- jmp zero,(ra) /* return */
-
- .end asm_dumpregistersandcall
-
-
/********************* function asm_handle_exception ***************************
* *
* This function handles an exception. It does not use the usual calling *
.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 */
.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 */
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 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,class_load /* class_load(exceptionclass) */
+
+ 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)
+ bne itmp3,L_class_linked
+
+ 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_link_ra /* set ra for gp loading */
+L_class_link_ra:
+ ldgp gp,0(ra) /* load gp */
+ jsr ra,class_link /* class_load(exceptionclass) */
+
+ 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_linked:
ldq a0,offobjvftbl(xptr) /* a0 = vftblptr(xptr) */
- ldq a1,offclassvftbl(a1) /* a1 = vftblptr(catchtype) class (not obj) */
+ 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) */
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 */
*******************************************************************************/
.ent asm_check_clinit
+
asm_check_clinit:
ldgp gp,0(pv)
subq sp,7*8,sp
stq ra,0*8(sp)
- stq a0,1*8(sp) /* save argument registers for leaf funcs */
- stq a1,2*8(sp)
+ stq a0,1*8(sp) /* save argument registers for leaf */
+ stq a1,2*8(sp) /* functions and native stub */
stq a2,3*8(sp)
stq a3,4*8(sp)
stq a4,5*8(sp)
ldq a4,5*8(sp)
ldq a5,6*8(sp)
addq sp,7*8,sp
-
+
+ beq v0,L_initializererror
+
L_is_initialized:
mov ra,itmp1 /* now patch the calling code */
subq itmp1,(3*4),itmp1 /* go back 3 instructions */
stl itmp2,0(itmp1) /* store the new branch: br +4 */
jmp zero,(ra)
-
+
+L_initializererror:
+#if defined(USE_THREADS) && defined(NATIVE_THREADS)
+ subq sp,1*8,sp
+ stq ra,0*8(sp)
+ jsr ra,builtin_asm_get_exceptionptrptr
+ ldq ra,0*8(sp)
+ addq sp,1*8,sp
+ ldq xptr,0(v0) /* get the exception pointer */
+ stq zero,0(v0) /* clear the exception pointer */
+#else
+ lda itmp3,_exceptionptr
+ ldq xptr,0(itmp3)
+ stq zero,0(itmp3)
+#endif
+
+ subq ra,4,xpc
+ br asm_handle_nat_exception
+
.end asm_check_clinit
.end asm_builtin_lrem
-/*********************** function new_builtin_checkcast ************************
-* *
-* Does the cast check and eventually throws an exception *
-* *
-*******************************************************************************/
-
- .ent asm_builtin_checkcast
-
-asm_builtin_checkcast:
- ldgp gp,0(pv)
- lda sp,-16(sp) # allocate stack space
- stq ra,0(sp) # save return address
- stq a0,8(sp) # save object pointer
- jsr ra,builtin_checkcast # builtin_checkcast
- ldgp gp,0(ra)
- beq v0,nb_ccast_throw # if (false) throw exception
- ldq ra,0(sp) # restore return address
- ldq v0,8(sp) # return object pointer
- lda sp,16(sp) # free stack space
- jmp zero,(ra)
-
-nb_ccast_throw:
- ldq a0,string_java_lang_ClassCastException
- jsr ra,new_exception
- ldgp gp,0(ra)
- mov v0,xptr
-
- ldq ra,0(sp) # restore return address
- lda sp,16(sp) # free stack space
- lda xpc,-4(ra) # faulting address is return adress - 4
- br asm_handle_nat_exception
-
- .end asm_builtin_checkcast
-
-
/******************* function asm_builtin_checkarraycast ***********************
* *
* Does the cast check and eventually throws an exception *
.end asm_switchstackandcall
-/********************* function asm_getcallingmethod ***************************
-* *
-* classinfo *asm_getcallingmethodclass (); *
-* *
-* goes back stack frames to get the calling method *
-* *
-* t2 .. sp *
-* t3 .. ra *
-* t4 .. pv *
-* *
-*******************************************************************************/
-
-
- .ent asm_getcallingmethod
-
-asm_getcallingmethod:
- ldq t3,16(sp) /* load return address of native function */
- addq sp,24,t2 /* skip frames of C-Function and nativestub */
-
- /* determine pv (t3) of java-function from ra */
-
- ldl t0,0(t3) /* load instruction LDA PV,xxx(RA) */
- sll t0,48,t0
- sra t0,48,t0 /* isolate offset */
- addq t0,t3,t4 /* compute update address */
- ldl t0,4(t3) /* load instruction LDAH PV,xxx(PV) */
- srl t0,16,t0 /* isolate instruction code */
- lda t0,-0x177b(t0) /* test for LDAH */
- bne t0,pv_ok1
- ldl t0,0(t3) /* load instruction LDA PV,xxx(RA) */
- sll t0,16,t0 /* compute high offset */
- addl t0,0,t0 /* sign extend high offset */
- addq t0,t4,t4 /* compute update address */
-
-pv_ok1:
- ldl t0,FrameSize(t4) /* t0 = frame size */
- addq t2,t0,t2 /* skip frame of java function */
- ldq t3,-8(t2) /* load new ra */
-
- /* determine pv (t3) of java-function from ra */
-
- ldl t0,0(t3) /* load instruction LDA PV,xxx(RA) */
- sll t0,48,t0
- sra t0,48,t0 /* isolate offset */
- addq t0,t3,t4 /* compute update address */
- ldl t0,4(t3) /* load instruction LDAH PV,xxx(PV) */
- srl t0,16,t0 /* isolate instruction code */
- lda t0,-0x177b(t0) /* test for LDAH */
- bne t0,pv_ok2
- ldl t0,0(t3) /* load instruction LDA PV,xxx(RA) */
- sll t0,16,t0 /* compute high offset */
- addl t0,0,t0 /* sign extend high offset */
- addq t0,t4,t4 /* compute update address */
-
-pv_ok2:
- ldq v0,MethodPointer(t4) /* */
-
- jmp zero,(ra) /* return */
-
- .end asm_getcallingmethod
-
-
/*
* 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
Authors: Andreas Krall
Reinhard Grafl
- $Id: asmpart.S 967 2004-03-18 14:29:03Z jowenn $
+ $Id: asmpart.S 1060 2004-05-16 13:44:31Z twisti $
*/
-
+
+#include "config.h"
#include "offsets.h"
+
+#define MethodPointer -8
+#define FrameSize -12
+#define IsSync -16
+#define IsLeaf -20
+#define IntSave -24
+#define FltSave -28
+/* DEFINE LINE NUMBER STUFF HERE */
+#define ExTableSize -56
+#define ExTableStart -56
+
+#define ExEntrySize -32
+#define ExStartPC -8
+#define ExEndPC -16
+#define ExHandlerPC -24
+#define ExCatchType -32
+
+
#define v0 $0
#define t0 $1
.globl asm_calljavafunction2double
.globl asm_calljavafunction2long
.globl asm_call_jit_compiler
- .globl asm_dumpregistersandcall
.globl asm_handle_exception
.globl asm_handle_nat_exception
.globl asm_check_clinit
/*************************** imported functions *******************************/
.globl jit_compile
+ .globl _exceptionptr
.globl builtin_monitorexit
.globl builtin_throw_exception
.globl builtin_trace_exception
.end has_no_x_instr_set
-/********************* function synchronize_caches ****************************/
-
- .ent synchronize_caches
-
-synchronize_caches:
- call_pal PAL_imb /* synchronise instruction cache */
- jmp zero,(ra) /* return */
-
- .end synchronize_caches
-
-
-#define MethodPointer -8
-#define FrameSize -12
-#define IsSync -16
-#define IsLeaf -20
-#define IntSave -24
-#define FltSave -28
-/* DEFINE LINE NUMBER STUFF HERE */
-#define ExTableSize -56
-#define ExTableStart -56
-
-#define ExEntrySize -32
-#define ExStartPC -8
-#define ExEndPC -16
-#define ExHandlerPC -24
-#define ExCatchType -32
-
/********************* function asm_calljavafunction ***************************
* *
* This function calls a Java-method (which possibly needs compilation) *
.end asm_call_jit_compiler
-/****************** function asm_dumpregistersandcall **************************
-* *
-* This funtion saves all callee saved registers and calls the function *
-* which is passed as parameter. *
-* *
-* This function is needed by the garbage collector, which needs to access *
-* all registers which are stored on the stack. Unused registers are *
-* cleared to avoid interferances with the GC. *
-* *
-* void asm_dumpregistersandcall (functionptr f); *
-* *
-*******************************************************************************/
-
- .ent asm_dumpregistersandcall
-asm_dumpregistersandcall:
- lda sp,-16*8(sp) /* allocate stack */
- stq ra,0(sp) /* save return address */
-
- stq s0,1*8(sp) /* save all callee saved registers */
- stq s1,2*8(sp) /* intialize the remaining registers */
- stq s2,3*8(sp)
- stq s3,4*8(sp)
- stq s4,5*8(sp)
- stq s5,6*8(sp)
- stq s6,7*8(sp)
- stt $f2,8*8(sp)
- stt $f3,9*8(sp)
- stt $f4,10*8(sp)
- stt $f5,11*8(sp)
- stt $f6,12*8(sp)
- stt $f7,13*8(sp)
- stt $f8,14*8(sp)
- stt $f9,15*8(sp)
-
- clr v0 /* intialize the remaining registers */
- clr t0
- clr t1
- clr t2
- clr t3
- clr t4
- clr t5
- clr t6
- clr t7
- clr a1
- clr a2
- clr a3
- clr a4
- clr a5
- clr t8
- clr t9
- clr t10
- clr t11
- clr t12
- clr $28
- clr $29
- cpys $f31,$f31,$f0
- cpys $f31,$f31,$f1
- cpys $f31,$f31,$f10
- cpys $f31,$f31,$f11
- cpys $f31,$f31,$f12
- cpys $f31,$f31,$f13
- cpys $f31,$f31,$f14
- cpys $f31,$f31,$f15
- cpys $f31,$f31,$f16
- cpys $f31,$f31,$f17
- cpys $f31,$f31,$f18
- cpys $f31,$f31,$f19
- cpys $f31,$f31,$f20
- cpys $f31,$f31,$f21
- cpys $f31,$f31,$f22
- cpys $f31,$f31,$f23
- cpys $f31,$f31,$f24
- cpys $f31,$f31,$f25
- cpys $f31,$f31,$f26
- cpys $f31,$f31,$f27
- cpys $f31,$f31,$f28
- cpys $f31,$f31,$f29
- cpys $f31,$f31,$f30
-
- mov a0,pv /* load function pointer */
- jmp ra,(pv) /* and call function */
-
- ldq ra,0(sp) /* load return address */
- lda sp,16*8(sp) /* deallocate stack */
- jmp zero,(ra) /* return */
-
- .end asm_dumpregistersandcall
-
-
/********************* function asm_handle_exception ***************************
* *
* This function handles an exception. It does not use the usual calling *
.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 */
.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 */
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 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,class_load /* class_load(exceptionclass) */
+
+ 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)
+ bne itmp3,L_class_linked
+
+ 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_link_ra /* set ra for gp loading */
+L_class_link_ra:
+ ldgp gp,0(ra) /* load gp */
+ jsr ra,class_link /* class_load(exceptionclass) */
+
+ 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_linked:
ldq a0,offobjvftbl(xptr) /* a0 = vftblptr(xptr) */
- ldq a1,offclassvftbl(a1) /* a1 = vftblptr(catchtype) class (not obj) */
+ 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) */
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 */
*******************************************************************************/
.ent asm_check_clinit
+
asm_check_clinit:
ldgp gp,0(pv)
subq sp,7*8,sp
stq ra,0*8(sp)
- stq a0,1*8(sp) /* save argument registers for leaf funcs */
- stq a1,2*8(sp)
+ stq a0,1*8(sp) /* save argument registers for leaf */
+ stq a1,2*8(sp) /* functions and native stub */
stq a2,3*8(sp)
stq a3,4*8(sp)
stq a4,5*8(sp)
ldq a4,5*8(sp)
ldq a5,6*8(sp)
addq sp,7*8,sp
-
+
+ beq v0,L_initializererror
+
L_is_initialized:
mov ra,itmp1 /* now patch the calling code */
subq itmp1,(3*4),itmp1 /* go back 3 instructions */
stl itmp2,0(itmp1) /* store the new branch: br +4 */
jmp zero,(ra)
-
+
+L_initializererror:
+#if defined(USE_THREADS) && defined(NATIVE_THREADS)
+ subq sp,1*8,sp
+ stq ra,0*8(sp)
+ jsr ra,builtin_asm_get_exceptionptrptr
+ ldq ra,0*8(sp)
+ addq sp,1*8,sp
+ ldq xptr,0(v0) /* get the exception pointer */
+ stq zero,0(v0) /* clear the exception pointer */
+#else
+ lda itmp3,_exceptionptr
+ ldq xptr,0(itmp3)
+ stq zero,0(itmp3)
+#endif
+
+ subq ra,4,xpc
+ br asm_handle_nat_exception
+
.end asm_check_clinit
.end asm_builtin_lrem
-/*********************** function new_builtin_checkcast ************************
-* *
-* Does the cast check and eventually throws an exception *
-* *
-*******************************************************************************/
-
- .ent asm_builtin_checkcast
-
-asm_builtin_checkcast:
- ldgp gp,0(pv)
- lda sp,-16(sp) # allocate stack space
- stq ra,0(sp) # save return address
- stq a0,8(sp) # save object pointer
- jsr ra,builtin_checkcast # builtin_checkcast
- ldgp gp,0(ra)
- beq v0,nb_ccast_throw # if (false) throw exception
- ldq ra,0(sp) # restore return address
- ldq v0,8(sp) # return object pointer
- lda sp,16(sp) # free stack space
- jmp zero,(ra)
-
-nb_ccast_throw:
- ldq a0,string_java_lang_ClassCastException
- jsr ra,new_exception
- ldgp gp,0(ra)
- mov v0,xptr
-
- ldq ra,0(sp) # restore return address
- lda sp,16(sp) # free stack space
- lda xpc,-4(ra) # faulting address is return adress - 4
- br asm_handle_nat_exception
-
- .end asm_builtin_checkcast
-
-
/******************* function asm_builtin_checkarraycast ***********************
* *
* Does the cast check and eventually throws an exception *
.end asm_switchstackandcall
-/********************* function asm_getcallingmethod ***************************
-* *
-* classinfo *asm_getcallingmethodclass (); *
-* *
-* goes back stack frames to get the calling method *
-* *
-* t2 .. sp *
-* t3 .. ra *
-* t4 .. pv *
-* *
-*******************************************************************************/
-
-
- .ent asm_getcallingmethod
-
-asm_getcallingmethod:
- ldq t3,16(sp) /* load return address of native function */
- addq sp,24,t2 /* skip frames of C-Function and nativestub */
-
- /* determine pv (t3) of java-function from ra */
-
- ldl t0,0(t3) /* load instruction LDA PV,xxx(RA) */
- sll t0,48,t0
- sra t0,48,t0 /* isolate offset */
- addq t0,t3,t4 /* compute update address */
- ldl t0,4(t3) /* load instruction LDAH PV,xxx(PV) */
- srl t0,16,t0 /* isolate instruction code */
- lda t0,-0x177b(t0) /* test for LDAH */
- bne t0,pv_ok1
- ldl t0,0(t3) /* load instruction LDA PV,xxx(RA) */
- sll t0,16,t0 /* compute high offset */
- addl t0,0,t0 /* sign extend high offset */
- addq t0,t4,t4 /* compute update address */
-
-pv_ok1:
- ldl t0,FrameSize(t4) /* t0 = frame size */
- addq t2,t0,t2 /* skip frame of java function */
- ldq t3,-8(t2) /* load new ra */
-
- /* determine pv (t3) of java-function from ra */
-
- ldl t0,0(t3) /* load instruction LDA PV,xxx(RA) */
- sll t0,48,t0
- sra t0,48,t0 /* isolate offset */
- addq t0,t3,t4 /* compute update address */
- ldl t0,4(t3) /* load instruction LDAH PV,xxx(PV) */
- srl t0,16,t0 /* isolate instruction code */
- lda t0,-0x177b(t0) /* test for LDAH */
- bne t0,pv_ok2
- ldl t0,0(t3) /* load instruction LDA PV,xxx(RA) */
- sll t0,16,t0 /* compute high offset */
- addl t0,0,t0 /* sign extend high offset */
- addq t0,t4,t4 /* compute update address */
-
-pv_ok2:
- ldq v0,MethodPointer(t4) /* */
-
- jmp zero,(ra) /* return */
-
- .end asm_getcallingmethod
-
-
/*
* 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
projects / cacao.git / commitdiff