Changes:
- $Id: asmpart.S 3891 2005-12-05 22:54:42Z twisti $
+ $Id: asmpart.S 3892 2005-12-06 20:13:26Z twisti $
*/
jmp asm_handle_exception
-/********************* function asm_handle_exception ***************************
+/* 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 *
* 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); *
-* *
*******************************************************************************/
asm_handle_nat_exception:
add $8,%rsp /* clear return address of native stub*/
asm_handle_exception:
- sub $(4*8),%rsp
- mov xptr,0*8(%rsp) /* save exception pointer */
- mov xpc,1*8(%rsp) /* save exception pc */
-
- mov xpc,%rdi /* exception pc */
- call codegen_findmethod
- mov %rax,itmp3
- mov %rax,2*8(%rsp) /* save data segment pointer */
-
- mov 0*8(%rsp),%rax /* restore exception pointer */
- mov 1*8(%rsp),%r10 /* restore exception pc */
-
xor a3,a3 /* clear indent flag (only first time)*/
-ex_stack_loop:
+L_asm_handle_exception_stack_loop:
+ sub $(4*8),sp
+ mov xptr,0*8(sp) /* save exception pointer */
+ mov xpc,1*8(sp) /* save exception pc */
+
+ mov xpc,a0 /* exception pc */
+ call codegen_findmethod
+ mov v0,2*8(sp) /* save data segment pointer */
+
mov 0*8(sp),a0 /* pass exception pointer */
mov 1*8(sp),a1 /* pass exception pc */
- mov 2*8(sp),a2 /* pass data segment pointer */
+ mov v0,a2 /* pass data segment pointer */
+ mov sp,a3
+ add $(4*8),a3 /* pass Java stack pointer */
call exceptions_handle_exception
test v0,v0
jz L_asm_handle_exception_not_catched
mov v0,xpc /* move handlerpc into xpc */
- mov 0*8(sp),%rax /* restore exception pointer */
+ mov 0*8(sp),xptr /* restore exception pointer */
add $(4*8),sp /* free stack frame */
jmp *xpc /* jump to the handler */
L_asm_handle_exception_not_catched:
- mov 0*8(%rsp),%rax /* restore exception pointer */
- mov 1*8(%rsp),%r10 /* restore exception pc */
- mov 2*8(%rsp),%r11 /* restore data segment pointer */
- add $(4*8),%rsp
-
- mov %rax,%rcx /* save exception pointer */
-
-ex_already_cleared:
- movl IsSync(%r11),%eax /* %rax = SyncOffset */
- test %rax,%rax /* if zero no monitorexit */
- je no_monitor_exit
-
-#if defined(USE_THREADS)
- add %rsp,%rax
- mov -8(%rax),%rdi /* get monitor object from stack */
-
- sub $(4*8),%rsp
- mov %rcx,0*8(%rsp)
- mov %r10,1*8(%rsp)
- mov %r11,2*8(%rsp)
-
- call builtin_monitorexit
-
- mov 0*8(%rsp),%rcx
- mov 1*8(%rsp),%r10
- mov 2*8(%rsp),%r11
- add $(4*8),%rsp
-#endif
+ mov 0*8(sp),xptr /* restore exception pointer */
+ mov 2*8(sp),itmp3 /* restore data segment pointer */
+ add $(4*8),sp
-no_monitor_exit:
- mov FrameSize(%r11),%eax /* %eax = frame size */
- add %rax,%rsp /* unwind stack */
- mov %rsp,%rax /* %rax = pointer to save area */
+ mov FrameSize(itmp3),itmp2l /* get frame size */
+ add itmp2,sp /* unwind stack */
+ mov sp,itmp2 /* pointer to save area */
- mov IntSave(%r11),%edx /* %edx = saved int register count */
+ mov IntSave(itmp3),%edx /* %edx = saved int register count */
test %edx,%edx
je noint
cmp $5,%edx
je int5
- mov -48(%rax),%rbx
+ mov -48(itmp2),%rbx
int5:
- mov -40(%rax),%rbp
+ mov -40(itmp2),%rbp
int4:
- mov -32(%rax),%r12
+ mov -32(itmp2),%r12
int3:
- mov -24(%rax),%r13
+ mov -24(itmp2),%r13
int2:
- mov -16(%rax),%r14
+ mov -16(itmp2),%r14
int1:
- mov -8(%rax),%r15
+ mov -8(itmp2),%r15
shl $3,%edx /* multiply by 8 bytes */
- sub %rdx,%rax
+ sub %rdx,itmp2
noint:
- mov FltSave(%r11),%edx /* %edx = saved flt register count */
+ mov FltSave(itmp3),%edx /* %edx = saved flt register count */
test %edx,%edx
je noflt
cmpl $7,%edx
je flt7
- movq -64(%rax),%xmm8
+ movq -64(itmp2),%xmm8
flt7:
- movq -56(%rax),%xmm9
+ movq -56(itmp2),%xmm9
flt6:
- movq -48(%rax),%xmm10
+ movq -48(itmp2),%xmm10
flt5:
- movq -40(%rax),%xmm11
+ movq -40(itmp2),%xmm11
flt4:
- movq -32(%rax),%xmm12
+ movq -32(itmp2),%xmm12
flt3:
- movq -24(%rax),%xmm13
+ movq -24(itmp2),%xmm13
flt2:
- movq -16(%rax),%xmm14
+ movq -16(itmp2),%xmm14
flt1:
- movq -8(%rax),%xmm15
+ movq -8(itmp2),%xmm15
noflt:
- pop %r10 /* the new xpc is return address */
- sub $3,%r10 /* subtract 3 bytes for call */
-
- sub $(2*8),%rsp
- mov %rcx,0*8(%rsp)
- mov %r10,1*8(%rsp)
+ /* exception pointer is still set */
+ pop xpc /* the new xpc is return address */
+ sub $3,xpc /* subtract 3 bytes for call */
- mov %r10,%rdi
- call codegen_findmethod /* get the new data segment ptr */
- mov %rax,%r11
-
- mov 0*8(%rsp),%rcx
- mov 1*8(%rsp),%r10
- add $(2*8),%rsp
-
- mov %rcx,%rax /* restore saved exception pointer */
-
- sub $(4*8),%rsp
-
- mov %rax,0*8(%rsp) /* save exception pointer */
- mov %r10,1*8(%rsp) /* save exception pc */
- mov %r11,2*8(%rsp) /* save data segment pointer */
-
mov $1,a3 /* set indent flag */
- jmp ex_stack_loop
+ jmp L_asm_handle_exception_stack_loop
/* asm_wrapper_patcher *********************************************************
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