* *
* See file COPYRIGHT for information on usage and disclaimer of warranties *
* *
-* Authors: Reinhard Grafl EMAIL: cacao@complang.tuwien.ac.at *
-* Andreas Krall EMAIL: cacao@complang.tuwien.ac.at *
+* Authors: Andreas Krall EMAIL: cacao@complang.tuwien.ac.at *
+* Reinhard Grafl EMAIL: cacao@complang.tuwien.ac.at *
* *
-* Last Change: 1997/04/26 *
+* Last Change: 1998/11/01 *
* *
*******************************************************************************/
+#include "offsets.h"
#define v0 $0
#define PAL_imb 134
-#define offobjarr 24
-#define offarrsize 8
-
.text
.set noat
.set noreorder
.globl asm_handle_exception
.globl asm_handle_nat_exception
.globl asm_signal_exception
- .globl new_builtin_checkcast
- .globl new_builtin_checkclasscast
- .globl new_builtin_checkintercast
- .globl new_builtin_checkarraycast
- .globl new_builtin_aastore
- .globl new_builtin_monitorenter
- .globl new_builtin_monitorexit
- .globl new_builtin_idiv
- .globl new_builtin_irem
- .globl new_builtin_ldiv
- .globl new_builtin_lrem
+ .globl asm_builtin_checkarraycast
+ .globl asm_builtin_aastore
+ .globl asm_builtin_monitorenter
+ .globl asm_builtin_monitorexit
+ .globl asm_builtin_idiv
+ .globl asm_builtin_irem
+ .globl asm_builtin_ldiv
+ .globl asm_builtin_lrem
.globl perform_alpha_threadswitch
.globl initialize_thread_stack
.globl asm_switchstackandcall
.globl builtin_trace_exception
.globl class_java_lang_Object
+
/*********************** function has_no_x_instr_set ***************************
* *
* determines if the byte support instruction set (21164a and higher) *
.ent has_no_x_instr_set
has_no_x_instr_set:
- .long 0x47e03c20 # amask 1,$0
- jmp zero,(ra) # return
+ .long 0x47e03c20 /* amask 1,v0 */
+ jmp zero,(ra) /* return */
.end has_no_x_instr_set
.ent synchronize_caches
synchronize_caches:
- call_pal PAL_imb # synchronise instruction cache
- jmp zero,(ra) # return
+ call_pal PAL_imb /* synchronise instruction cache */
+ jmp zero,(ra) /* return */
.end synchronize_caches
.ascii "calljavamethod\0\0"
.align 3
- .quad 0 # catch type all
- .quad calljava_xhandler # end pc
- .quad calljava_xhandler # end pc
- .quad asm_calljavamethod # start pc
- .long 1 # extable size
- .long 0 # fltsave
- .long 0 # intsave
- .long 0 # isleaf
- .long 0 # IsSync
- .long 32 # frame size
- .quad 0 # method pointer (pointer to name) @@@@@
+ .quad 0 /* catch type all */
+ .quad calljava_xhandler /* end pc */
+ .quad calljava_xhandler /* end pc */
+ .quad asm_calljavamethod /* start pc */
+ .long 1 /* extable size */
+ .long 0 /* fltsave */
+ .long 0 /* intsave */
+ .long 0 /* isleaf */
+ .long 0 /* IsSync */
+ .long 32 /* frame size */
+ .quad 0 /* method pointer (pointer to name) */
asm_calljavamethod:
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
+ lda sp,-32(sp) /* allocate stack space */
+ stq gp,24(sp) /* save global pointer */
+ stq ra,0(sp) /* save return address */
- stq $16,16(sp) # save method pointer for compiler
- lda $0,16(sp) # pass pointer to method pointer via $0
+ stq a0,16(sp) /* save method pointer for compiler */
+ lda v0,16(sp) /* pass pointer to method pointer via v0*/
- bis $17,$17,$16 # pass the remaining parameters
- bis $18,$18,$17
- bis $19,$19,$18
- bis $20,$20,$19
+ mov a1,a0 /* pass the remaining parameters */
+ mov a2,a1
+ mov a3,a2
+ mov a4,a3
- lda $28,asm_call_jit_compiler # fake virtual function call
- stq $28,8(sp) # store function address
- bis sp,sp,$28 # set method pointer
+ lda $28,asm_call_jit_compiler /* fake virtual function call (2 instr) */
+ stq $28,8(sp) /* store function address */
+ mov sp,$28 /* set method pointer */
- ldq pv,8($28) # method call as in Java
- jmp ra,(pv) # call JIT compiler
+ ldq pv,8($28) /* method call as in Java */
+ jmp ra,(pv) /* call JIT compiler */
calljava_jit:
- lda pv,-64(ra) # asm_calljavamethod-calljava_jit(ra) !!!!!!
+ lda pv,-64(ra) /* asm_calljavamethod-calljava_jit !!!!!*/
calljava_return:
- ldq ra,0(sp) # restore return address
- ldq gp,24(sp) # restore global pointer
- lda sp,32(sp) # free stack space
- ldl $0,newcompiler # load newcompiler flag
- subq $0,1,$0 # negate for clearing $0
- beq $0,calljava_ret # if newcompiler skip ex copying
- bis $1,$1,$0 # pass exception to caller (C)
+ ldq ra,0(sp) /* restore return address */
+ ldq gp,24(sp) /* restore global pointer */
+ lda sp,32(sp) /* free stack space */
+ ldl v0,newcompiler /* load newcompiler flag */
+ subq v0,1,v0 /* negate for clearing v0 */
+ beq v0,calljava_ret /* if newcompiler skip ex copying */
+ mov $1,v0 /* pass exception to caller (C) */
calljava_ret:
jmp zero,(ra)
calljava_xhandler:
- ldq gp,24(sp) # restore global pointer
+ ldq gp,24(sp) /* restore global pointer */
mov itmp1,a0
jsr ra,builtin_throw_exception
- ldq ra,0(sp) # restore return address
- lda sp,32(sp) # free stack space
+ ldq ra,0(sp) /* restore return address */
+ lda sp,32(sp) /* free stack space */
jmp zero,(ra)
.end asm_calljavamethod
* 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_LDQ (REG_PV, REG_PV, a) ; invokestatic/special ($27) *
* M_LDA (REG_PV, REG_RA, low) *
-* M_LDAH(REG_PV, REG_RA, high) # optional *
+* M_LDAH(REG_PV, REG_RA, high) ; optional *
* or *
-* M_LDQ (REG_PV, REG_METHODPTR, m) # invokevirtual/interface ($28) *
+* 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 *
* *
asm_call_jit_compiler:
ldgp gp,0(pv)
- ldl $22,-8(ra) # load instruction LDQ PV,xxx($yy)
- srl $22,16,$22 # shift right register number $yy
- and $22,31,$22 # isolate register number
- subl $22,28,$22 # test for REG_METHODPTR
- beq $22,noregchange
- ldl $22,0(ra) # load instruction LDA PV,xxx(RA)
- sll $22,48,$22
- sra $22,48,$22 # isolate offset
- addq $22,ra,$28 # compute update address
- ldl $22,4(ra) # load instruction LDAH PV,xxx(PV)
- srl $22,16,$22 # isolate instruction code
- lda $22,-0x177b($22) # test for LDAH
- bne $22,noregchange
- ldl $22,0(ra) # load instruction LDA PV,xxx(RA)
- sll $22,16,$22 # compute high offset
- addl $22,0,$22 # sign extend high offset
- addq $22,$28,$28 # compute update address
+ ldl t8,-8(ra) /* load instruction LDQ PV,xxx($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 t8,0(ra) /* load instruction LDA PV,xxx(RA) */
+ 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,-14*8(sp) # reserve stack space
- stq $16,0*8(sp) # save all argument registers
- stq $17,1*8(sp) # they could be used by method
- stq $18,2*8(sp)
- stq $19,3*8(sp)
- stq $20,4*8(sp)
- stq $21,5*8(sp)
+ lda sp,-14*8(sp) /* reserve stack space */
+ stq a0,0*8(sp) /* save all argument registers */
+ stq a1,1*8(sp) /* they could be used by method */
+ stq a2,2*8(sp)
+ stq a3,3*8(sp)
+ stq a4,4*8(sp)
+ stq a5,5*8(sp)
stt $f16,6*8(sp)
stt $f17,7*8(sp)
stt $f18,8*8(sp)
stt $f19,9*8(sp)
stt $f20,10*8(sp)
stt $f21,11*8(sp)
- stq $28,12*8(sp) # save method pointer
- stq ra,13*8(sp) # save return address
+ stq $28,12*8(sp) /* save method pointer */
+ stq ra,13*8(sp) /* save return address */
- ldq $16,0($0) # pass 'methodinfo' pointer to
- jsr ra,compiler_compile # compiler
+ ldq a0,0(v0) /* pass 'methodinfo' pointer to */
+ jsr ra,compiler_compile /* compiler */
ldgp gp,0(ra)
- call_pal PAL_imb # synchronise instruction cache
+ call_pal PAL_imb /* synchronise instruction cache */
- ldq $16,0*8(sp) # load argument registers
- ldq $17,1*8(sp)
- ldq $18,2*8(sp)
- ldq $19,3*8(sp)
- ldq $20,4*8(sp)
- ldq $21,5*8(sp)
+ ldq a0,0*8(sp) /* load argument registers */
+ ldq a1,1*8(sp)
+ ldq a2,2*8(sp)
+ ldq a3,3*8(sp)
+ ldq a4,4*8(sp)
+ ldq a5,5*8(sp)
ldt $f16,6*8(sp)
ldt $f17,7*8(sp)
ldt $f18,8*8(sp)
ldt $f19,9*8(sp)
ldt $f20,10*8(sp)
ldt $f21,11*8(sp)
- ldq $28,12*8(sp) # load method pointer
- ldq ra,13*8(sp) # load return address
- lda sp,14*8(sp) # deallocate stack area
+ ldq $28,12*8(sp) /* load method pointer */
+ ldq ra,13*8(sp) /* load return address */
+ lda sp,14*8(sp) /* deallocate stack area */
- ldl $22,-8(ra) # load instruction LDQ PV,xxx($yy)
- sll $22,48,$22
- sra $22,48,$22 # isolate offset
+ ldl t8,-8(ra) /* load instruction LDQ PV,xxx($yy) */
+ sll t8,48,t8
+ sra t8,48,t8 /* isolate offset */
- addq $22,$28,$22 # compute update address via method pointer
- stq $0,0($22) # save new method address there
+ addq t8,$28,t8 /* compute update address via method pointer*/
+ stq v0,0(t8) /* save new method address there */
- bis $0,$0,pv # load method address into pv
+ mov v0,pv /* load method address into pv */
- jmp zero, (pv) # and call method. The method returns
- # directly to the caller (ra).
+ jmp zero,(pv) /* and call method. The method returns */
+ /* directly to the caller (ra). */
.end asm_call_jit_compiler
.ent asm_dumpregistersandcall
asm_dumpregistersandcall:
- lda sp,-16*8(sp) # allocate stack
- stq ra,0(sp) # save return address
-
- stq $9,1*8(sp) # save all callee saved registers
- stq $10,2*8(sp) # intialize the remaining registers
- stq $11,3*8(sp)
- stq $12,4*8(sp)
- stq $13,5*8(sp)
- stq $14,6*8(sp)
- stq $15,7*8(sp)
+ 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 $f8,14*8(sp)
stt $f9,15*8(sp)
- bis zero,zero,$0 # intialize the remaining registers
- bis zero,zero,$1
- bis zero,zero,$2
- bis zero,zero,$3
- bis zero,zero,$4
- bis zero,zero,$5
- bis zero,zero,$6
- bis zero,zero,$7
- bis zero,zero,$8
- bis zero,zero,$17
- bis zero,zero,$18
- bis zero,zero,$19
- bis zero,zero,$20
- bis zero,zero,$21
- bis zero,zero,$22
- bis zero,zero,$23
- bis zero,zero,$24
- bis zero,zero,$25
- bis zero,zero,$26
- bis zero,zero,$27
- bis zero,zero,$28
- bis zero,zero,$29
+ 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,$f29
cpys $f31,$f31,$f30
- bis $16,$16,pv # load function pointer
- jmp ra,(pv) # and call function
+ 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
+ ldq ra,0(sp) /* load return address */
+ lda sp,16*8(sp) /* deallocate stack */
+ jmp zero,(ra) /* return */
.end asm_dumpregistersandcall
.ent asm_handle_nat_exception
asm_handle_nat_exception:
- ldl t0,0(ra) # load instruction LDA PV,xxx(RA)
+ 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
+ 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 t0,0(ra) # load instruction LDA 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
+ ldl t0,0(ra) /* load instruction LDA 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 */
.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 builtin_checkcast
+ 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 a4,16*8(sp)
stq a5,17*8(sp)
- lda t3,1(zero) # set no unwind flag
+ 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
+ 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)
ldq a1,MethodPointer(pv)
mov xpc,a2
mov t3,a3
- br ra,ex_trace # set ra for gp loading
+ br ra,ex_trace /* set ra for gp loading */
ex_trace:
- ldgp gp,0(ra) # load gp
- jsr ra,builtin_trace_exception # builtin_trace_exception(xptr,methodptr)
+ ldgp gp,0(ra) /* load gp */
+ jsr ra,builtin_trace_exception /* trace_exception(xptr,methodptr) */
- ldq xptr,0*8(sp) # restore used register
+ 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
+ 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
+ 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
- mov xptr,a0 # arg0 = exception 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_gpload # set ra for gp loading
-ex_gpload:
- ldgp gp,0(ra) # load gp
- jsr ra,builtin_checkcast # builtin_checkcast(xptr,catchtype)
-
- 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
-
- beq v0,ex_table_cont # if (false) continue
+ 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 */
+
+ ldq a0,offobjvftbl(xptr) /* a0 = vftblptr(xptr) */
+ ldq a1,offobjvftbl(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) */
+ subl a0,v0,a0 /* a0 = baseval(xptr) - baseval(catchtype) */
+ cmpule a0,a1,v0 /* v0 = xptr is instanceof catchtype */
+ beq v0,ex_table_cont /* if (false) continue */
ex_handle_it:
- ldq xpc,ExHandlerPC(t1) # xpc = exception handler pc
+ ldq xpc,ExHandlerPC(t1) /* xpc = exception handler pc */
- beq t3,ex_jump # if (!(no stack unwinding) skip
+ 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 builtin_checkcast
+ 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 a3,15*8(sp)
ldq a4,16*8(sp)
ldq a5,17*8(sp)
- lda sp,18*8(sp) # deallocate stack
+ lda sp,18*8(sp) /* deallocate stack */
ex_jump:
- jmp zero,(xpc) # jump to the handler
+ 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
+ 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
+ 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
- addq sp,t0,t0 # add Offset to stackptr
- ldq a0,-8(t0) # load monitorexit pointer
+ ldl t0,IsSync(pv) /* t0 = SyncOffset */
+ beq t0,no_monitor_exit /* if zero no monitorexit */
+ addq sp,t0,t0 /* add Offset to stackptr */
+ ldq a0,-8(t0) /* load monitorexit pointer */
- lda sp,-7*8(sp) # allocate stack
- stq t0,0*8(sp) # save used register
+ 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 pv,5*8(sp)
stq ra,6*8(sp)
- br ra,ex_mon_load # set ra for gp loading
+ 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)
+ ldgp gp,0(ra) /* load gp */
+ jsr ra,builtin_monitorexit/* builtin_monitorexit(objectptr) */
- ldq t0,0*8(sp) # restore used register
+ 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
+ lda sp,7*8(sp) /* deallocate stack */
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--
+ 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
+ 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
+ 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 s5,-16(t0)
ldq s6,-8(t0)
ex_int2:
- s8addq t1,t0,t0 # t0 = t0 - 8 * register count
+ 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
+ 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
+ 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 $f2,-64(t0)
ldt $f3,-56(t0)
ldt $f4,-48(t0)
ldt $f8,-16(t0)
ldt $f9,-8(t0)
ex_flt2:
- ldl t0,0(ra) # load instruction LDA PV,xxx(RA)
+ 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
+ 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 t0,0(ra) # load instruction LDA 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
+ ldl t0,0(ra) /* load instruction LDA 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_exception
* *
*******************************************************************************/
-#define sigctxstack 0*8 /* sigstack state to restore */
-#define sigctxmask 1*8 /* signal mask to restore */
-#define sigctxpc 2*8 /* pc at time of signal */
-#define sigctxpsl 3*8 /* psl to retore */
-#define sigctxr00 4*8 /* processor regs 0 to 31 */
+#define sigctxstack 0*8 /* sigstack state to restore */
+#define sigctxmask 1*8 /* signal mask to restore */
+#define sigctxpc 2*8 /* pc at time of signal */
+#define sigctxpsl 3*8 /* psl to retore */
+#define sigctxr00 4*8 /* processor regs 0 to 31 */
#define sigctxr01 5*8
#define sigctxr02 6*8
#define sigctxr03 7*8
#define sigctxr30 34*8
#define sigctxr31 35*8
-#define sigctxfpuse 36*8 /* fp has been used */
-#define sigctxf00 37*8 /* fp regs 0 to 31 */
+#define sigctxfpuse 36*8 /* fp has been used */
+#define sigctxf00 37*8 /* fp regs 0 to 31 */
#define sigctxf01 38*8
#define sigctxf02 39*8
#define sigctxf03 40*8
#define sigctxf30 67*8
#define sigctxf31 68*8
-#define sigctxhfpcr 69*8 /* floating point control register */
-#define sigctxsfpcr 70*8 /* software fpcr */
+#define sigctxhfpcr 69*8 /* floating point control register */
+#define sigctxsfpcr 70*8 /* software fpcr */
.ent asm_signal_exception
asm_signal_exception:
mov a0,xptr
mov a1,sp
ldq xpc,sigctxpc(sp)
- ldq v0,sigctxr00(sp) # restore possible used registers
+ ldq v0,sigctxr00(sp) /* restore possible used registers */
ldq t0,sigctxr01(sp)
ldq t1,sigctxr02(sp)
ldq t2,sigctxr03(sp)
.end asm_signal_exception
-/********************* function new_builtin_monitorenter ***********************
+/********************* function asm_builtin_monitorenter ***********************
* *
* Does null check and calls monitorenter or throws an exception *
* *
*******************************************************************************/
- .ent new_builtin_monitorenter
-new_builtin_monitorenter:
+ .ent asm_builtin_monitorenter
+asm_builtin_monitorenter:
ldgp gp,0(pv)
lda pv,builtin_monitorenter
- beq a0,nb_monitorenter # if (null) throw exception
- jmp zero,(pv) # else call builtin_monitorenter
+ beq a0,nb_monitorenter /* if (null) throw exception */
+ jmp zero,(pv) /* else call builtin_monitorenter */
nb_monitorenter:
ldq xptr,proto_java_lang_NullPointerException
- lda xpc,-4(ra) # faulting address is return adress - 4
+ lda xpc,-4(ra) /* faulting address is return adress - 4*/
br asm_handle_nat_exception
- .end new_builtin_monitorenter
+ .end asm_builtin_monitorenter
-/********************* function new_builtin_monitorexit ************************
+/********************* function asm_builtin_monitorexit ************************
* *
* Does null check and calls monitorexit or throws an exception *
* *
*******************************************************************************/
- .ent new_builtin_monitorexit
-new_builtin_monitorexit:
+ .ent asm_builtin_monitorexit
+asm_builtin_monitorexit:
ldgp gp,0(pv)
lda pv,builtin_monitorexit
- beq a0,nb_monitorexit # if (null) throw exception
- jmp zero,(pv) # else call builtin_monitorexit
+ beq a0,nb_monitorexit /* if (null) throw exception */
+ jmp zero,(pv) /* else call builtin_monitorexit */
nb_monitorexit:
ldq xptr,proto_java_lang_NullPointerException
- lda xpc,-4(ra) # faulting address is return adress - 4
+ lda xpc,-4(ra) /* faulting address is return adress - 4*/
br asm_handle_nat_exception
- .end new_builtin_monitorenter
+ .end asm_builtin_monitorenter
-/************************ function new_builtin_idiv ****************************
+/************************ function asm_builtin_idiv ****************************
* *
* Does null check and calls idiv or throws an exception *
* *
*******************************************************************************/
- .ent new_builtin_idiv
-new_builtin_idiv:
+ .ent asm_builtin_idiv
+asm_builtin_idiv:
ldgp gp,0(pv)
lda pv,builtin_idiv
- beq a1,nb_idiv # if (null) throw exception
- jmp zero,(pv) # else call builtin_idiv
+ beq a1,nb_idiv /* if (null) throw exception */
+ jmp zero,(pv) /* else call builtin_idiv */
nb_idiv:
ldq xptr,proto_java_lang_ArithmeticException
- lda xpc,-4(ra) # faulting address is return adress - 4
+ lda xpc,-4(ra) /* faulting address is return adress - 4*/
br asm_handle_nat_exception
- .end new_builtin_idiv
+ .end asm_builtin_idiv
-/************************ function new_builtin_ldiv ****************************
+/************************ function asm_builtin_ldiv ****************************
* *
* Does null check and calls ldiv or throws an exception *
* *
*******************************************************************************/
- .ent new_builtin_ldiv
-new_builtin_ldiv:
+ .ent asm_builtin_ldiv
+asm_builtin_ldiv:
ldgp gp,0(pv)
lda pv,builtin_ldiv
- beq a1,nb_ldiv # if (null) throw exception
- jmp zero,(pv) # else call builtin_ldiv
+ beq a1,nb_ldiv /* if (null) throw exception */
+ jmp zero,(pv) /* else call builtin_ldiv */
nb_ldiv:
ldq xptr,proto_java_lang_ArithmeticException
- lda xpc,-4(ra) # faulting address is return adress - 4
+ lda xpc,-4(ra) /* faulting address is return adress - 4*/
br asm_handle_nat_exception
- .end new_builtin_ldiv
+ .end asm_builtin_ldiv
-/************************ function new_builtin_irem ****************************
+/************************ function asm_builtin_irem ****************************
* *
* Does null check and calls irem or throws an exception *
* *
*******************************************************************************/
- .ent new_builtin_irem
-new_builtin_irem:
+ .ent asm_builtin_irem
+asm_builtin_irem:
ldgp gp,0(pv)
lda pv,builtin_irem
- beq a1,nb_irem # if (null) throw exception
- jmp zero,(pv) # else call builtin_irem
+ beq a1,nb_irem /* if (null) throw exception */
+ jmp zero,(pv) /* else call builtin_irem */
nb_irem:
ldq xptr,proto_java_lang_ArithmeticException
- lda xpc,-4(ra) # faulting address is return adress - 4
+ lda xpc,-4(ra) /* faulting address is return adress - 4*/
br asm_handle_nat_exception
- .end new_builtin_irem
+ .end asm_builtin_irem
-/************************ function new_builtin_lrem ****************************
+/************************ function asm_builtin_lrem ****************************
* *
* Does null check and calls lrem or throws an exception *
* *
*******************************************************************************/
- .ent new_builtin_lrem
-new_builtin_lrem:
+ .ent asm_builtin_lrem
+asm_builtin_lrem:
ldgp gp,0(pv)
lda pv,builtin_lrem
- beq a1,nb_lrem # if (null) throw exception
- jmp zero,(pv) # else call builtin_lrem
+ beq a1,nb_lrem /* if (null) throw exception */
+ jmp zero,(pv) /* else call builtin_lrem */
nb_lrem:
ldq xptr,proto_java_lang_ArithmeticException
- lda xpc,-4(ra) # faulting address is return adress - 4
- br asm_handle_nat_exception
- .end new_builtin_lrem
-
-
-/*********************** function new_builtin_checkcast ************************
-* *
-* Does the cast check and eventually throws an exception *
-* *
-*******************************************************************************/
-
- .ent new_builtin_checkcast
-new_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,new_builtin_checkcast # new_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 xptr,proto_java_lang_ClassCastException
- 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 new_builtin_checkcast
-
-
-/****************** function new_builtin_checkclasscast ************************
-* *
-* Does the cast check and eventually throws an exception *
-* *
-*******************************************************************************/
-
- .ent new_builtin_checkclasscast
-new_builtin_checkclasscast:
-
- 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_checkclasscast # builtin_checkclasscast
- ldgp gp,0(ra)
- beq v0,nb_cclass_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_cclass_throw:
- ldq xptr,proto_java_lang_ClassCastException
- 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 new_builtin_checkclasscast
-
-
-/****************** function new_builtin_checkintercast ************************
-* *
-* Does the cast check and eventually throws an exception *
-* *
-*******************************************************************************/
-
- .ent new_builtin_checkintercast
-new_builtin_checkintercast:
-
- 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_checkintercast # builtin_checkintercast
- ldgp gp,0(ra)
- beq v0,nb_cinter_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_cinter_throw:
- ldq xptr,proto_java_lang_ClassCastException
- ldq ra,0(sp) # restore return address
- lda sp,16(sp) # free stack space
- lda xpc,-4(ra) # faulting address is return adress - 4
+ lda xpc,-4(ra) /* faulting address is return adress - 4*/
br asm_handle_nat_exception
- .end new_builtin_checkintercast
+ .end asm_builtin_lrem
-/******************* function new_builtin_checkarraycast ***********************
+/******************* function asm_builtin_checkarraycast ***********************
* *
* Does the cast check and eventually throws an exception *
* *
*******************************************************************************/
- .ent new_builtin_checkarraycast
-new_builtin_checkarraycast:
+ .ent asm_builtin_checkarraycast
+asm_builtin_checkarraycast:
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_checkarraycast # builtin_checkarraycast
+ lda sp,-16(sp) /* allocate stack space */
+ stq ra,0(sp) /* save return address */
+ stq a0,8(sp) /* save object pointer */
+ jsr ra,builtin_checkarraycast /* builtin_checkarraycast */
ldgp gp,0(ra)
- beq v0,nb_carray_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
+ beq v0,nb_carray_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_carray_throw:
ldq xptr,proto_java_lang_ClassCastException
- ldq ra,0(sp) # restore return address
- lda sp,16(sp) # free stack space
- lda xpc,-4(ra) # faulting address is return adress - 4
+ 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 new_builtin_checkarraycast
+ .end asm_builtin_checkarraycast
-/******************* function new_builtin_aastore ******************************
+/******************* function asm_builtin_aastore ******************************
* *
* Does the cast check and eventually throws an exception *
* *
*******************************************************************************/
- .ent new_builtin_aastore
-new_builtin_aastore:
+ .ent asm_builtin_aastore
+asm_builtin_aastore:
ldgp gp,0(pv)
- beq a0,nb_aastore_null # if null pointer throw exception
- ldl t0,offarrsize(a0) # load size
- lda sp,-24(sp) # allocate stack space
- stq ra,0(sp) # save return address
- s8addq a1,a0,t1 # add index*8 to arrayref
- cmpult a1,t0,t0 # do bound check
- beq t0,nb_aastore_bound # if out of bounds throw exception
- mov a2,a1 # object is second argument
- stq t1,8(sp) # save store position
- stq a1,16(sp) # save object
- jsr ra,builtin_canstore # builtin_canstore(arrayref,object)
+ beq a0,nb_aastore_null /* if null pointer throw exception */
+ ldl t0,offarraysize(a0) /* load size */
+ lda sp,-24(sp) /* allocate stack space */
+ stq ra,0(sp) /* save return address */
+ s8addq a1,a0,t1 /* add index*8 to arrayref */
+ cmpult a1,t0,t0 /* do bound check */
+ beq t0,nb_aastore_bound /* if out of bounds throw exception */
+ mov a2,a1 /* object is second argument */
+ stq t1,8(sp) /* save store position */
+ stq a1,16(sp) /* save object */
+ jsr ra,builtin_canstore /* builtin_canstore(arrayref,object) */
ldgp gp,0(ra)
- ldq ra,0(sp) # restore return address
- ldq a0,8(sp) # restore store position
- ldq a1,16(sp) # restore object
- lda sp,24(sp) # free stack space
- beq v0,nb_aastore_throw # if (false) throw exception
- stq a1,offobjarr(a0) # store objectptr in array
+ ldq ra,0(sp) /* restore return address */
+ ldq a0,8(sp) /* restore store position */
+ ldq a1,16(sp) /* restore object */
+ lda sp,24(sp) /* free stack space */
+ beq v0,nb_aastore_throw /* if (false) throw exception */
+ stq a1,offobjarrdata(a0) /* store objectptr in array */
jmp zero,(ra)
nb_aastore_null:
ldq xptr,proto_java_lang_NullPointerException
- mov ra,xpc # faulting address is return adress
+ mov ra,xpc /* faulting address is return adress */
br asm_handle_nat_exception
nb_aastore_bound:
ldq xptr,proto_java_lang_ArrayIndexOutOfBoundsException
- lda sp,24(sp) # free stack space
- mov ra,xpc # faulting address is return adress
+ lda sp,24(sp) /* free stack space */
+ mov ra,xpc /* faulting address is return adress */
br asm_handle_nat_exception
nb_aastore_throw:
ldq xptr,proto_java_lang_ArrayStoreException
- mov ra,xpc # faulting address is return adress
+ mov ra,xpc /* faulting address is return adress */
br asm_handle_nat_exception
- .end new_builtin_aastore
+ .end asm_builtin_aastore
/********************** function initialize_thread_stack ***********************
.ent asm_switchstackandcall
asm_switchstackandcall:
- lda a0,-2*8(a0) # allocate new stack
- stq ra,0(a0) # save return address
- stq sp,1*8(a0) # save old stack pointer
- mov a0,sp # switch to new stack
+ lda a0,-2*8(a0) /* allocate new stack */
+ stq ra,0(a0) /* save return address */
+ stq sp,1*8(a0) /* save old stack pointer */
+ mov a0,sp /* switch to new stack */
- mov a1,pv # load function pointer
- jmp ra,(pv) # and call funciton
+ mov a1,pv /* load function pointer */
+ jmp ra,(pv) /* and call funciton */
- ldq ra,0(sp) # load return address
- ldq sp,1*8(sp) # switch to old stack
+ ldq ra,0(sp) /* load return address */
+ ldq sp,1*8(sp) /* switch to old stack */
- jmp zero,(ra) # return
+ jmp zero,(ra) /* return */
.end asm_switchstackandcall
projects / cacao.git / commitdiff