Reinhard Grafl
Christian Thalinger
- $Id: asmpart.S 2351 2005-04-22 13:55:09Z twisti $
+ $Id: asmpart.S 2358 2005-04-22 22:01:51Z jowenn $
*/
.globl asm_switchstackandcall
.globl asm_criticalsections
.globl asm_getclassvalues_atomic
-
+
+ .globl asm_prepare_native_stackinfo
+ .globl asm_remove_native_stackinfo
+ .globl asm_throw_and_handle_exception
+ .globl asm_throw_and_handle_hardware_arithmetic_exception
/********************* function asm_calljavafunction ***************************
* *
.quad calljava_xhandler /* end pc */
.quad asm_calljavafunction /* start pc */
.long 1 /* extable size */
+ .long 0
+ .quad 0 /* line number table start */
+ .quad 0 /* line number table size */
+ .long 0
.long 0 /* fltsave */
.long 0 /* intsave */
.long 0 /* isleaf */
.quad calljava_xhandler2 /* end pc */
.quad asm_calljavafunction2 /* start pc */
.long 1 /* extable size */
+ .quad 0 /* line number table start */
+ .quad 0 /* line number table size */
.long 0 /* fltsave */
.long 0 /* intsave */
.long 0 /* isleaf */
*******************************************************************************/
asm_wrapper_patcher:
- sub $(18*8),%rsp /* stack frame (16-byte aligned) */
+ sub $(18*8),%rsp /* stack frame (16-byte aligned) */
- SAVE_ARGUMENT_REGISTERS
- SAVE_TEMPORARY_REGISTERS
+ SAVE_ARGUMENT_REGISTERS
+ SAVE_TEMPORARY_REGISTERS
- mov itmp1,15*8(%rsp) /* save itmp1 and itmp2 */
- mov itmp2,16*8(%rsp) /* can be used by some instructions */
+ mov itmp1,15*8(%rsp) /* save itmp1 and itmp2 */
+ mov itmp2,16*8(%rsp) /* can be used by some instructions */
- mov %rsp,a0 /* pass stack pointer */
- add $(19*8),a0 /* skip patcher function pointer */
- mov 18*8(%rsp),itmp3 /* get function pointer */
- call *itmp3 /* call the patcher function */
- mov v0,itmp3 /* save return value */
+ mov %rsp,a0 /* pass stack pointer */
+ add $(19*8),a0 /* skip patcher function pointer */
+ mov 18*8(%rsp),itmp3 /* get function pointer */
+ call *itmp3 /* call the patcher function */
+ mov v0,itmp3 /* save return value */
- RESTORE_ARGUMENT_REGISTERS
- RESTORE_TEMPORARY_REGISTERS
+ RESTORE_ARGUMENT_REGISTERS
+ RESTORE_TEMPORARY_REGISTERS
- mov 15*8(%rsp),itmp1 /* restore itmp1 and itmp2 */
- mov 16*8(%rsp),itmp2 /* can be used by some instructions */
+ mov 15*8(%rsp),itmp1 /* restore itmp1 and itmp2 */
+ mov 16*8(%rsp),itmp2 /* can be used by some instructions */
- add $((3+18)*8),%rsp /* remove stack frame, keep ra */
+ add $((3+18)*8),%rsp /* remove stack frame, keep ra */
- test itmp3,itmp3 /* exception thrown? */
- jz L_asm_wrapper_patcher_exception
- ret /* call new patched code */
+ test itmp3,itmp3 /* exception thrown? */
+ jz L_asm_wrapper_patcher_exception
+ ret /* call new patched code */
L_asm_wrapper_patcher_exception:
#if defined(USE_THREADS) && defined(NATIVE_THREADS)
- call builtin_asm_get_exceptionptrptr
- mov v0,itmp2
+ call builtin_asm_get_exceptionptrptr
+ mov v0,itmp2
#else
- lea _exceptionptr,itmp2
+ lea _exceptionptr,itmp2
#endif
- mov (itmp2),xptr /* get the exception pointer */
- movl $0,(itmp2) /* clear the exception pointer */
+ mov (itmp2),xptr /* get the exception pointer */
+ movl $0,(itmp2) /* clear the exception pointer */
- pop xpc /* get and remove return address */
- jmp asm_handle_exception
+ pop xpc /* get and remove return address */
+ jmp asm_handle_exception
/* asm_wrapper_patcher_builtin_new *********************************************
*******************************************************************************/
asm_wrapper_patcher_builtin_new:
- sub $(1*8),%rsp /* stack frame (16-byte aligned) */
- mov %rsp,a1 /* pass stack pointer */
- add $(1*8),a1
- call patcher_builtin_new /* call the helper function */
- add $(1*8),%rsp /* remove stack frame */
- test v0,v0 /* exception thrown? */
- jz L_asm_wrapper_patcher_exception
- ret /* call new patched code */
+ sub $(1*8),%rsp /* stack frame (16-byte aligned) */
+ mov %rsp,a1 /* pass stack pointer */
+ add $(1*8),a1
+ call patcher_builtin_new /* call the helper function */
+ add $(1*8),%rsp /* remove stack frame */
+ test v0,v0 /* exception thrown? */
+ jz L_asm_wrapper_patcher_exception
+ ret /* call new patched code */
/* asm_wrapper_patcher_builtin_* ***********************************************
*******************************************************************************/
asm_wrapper_patcher_builtin_newarray:
- lea patcher_builtin_newarray,itmp1
- jmp L_asm_wrapper_patcher_builtin_main
+ lea patcher_builtin_newarray,itmp1
+ jmp L_asm_wrapper_patcher_builtin_main
asm_wrapper_patcher_builtin_multianewarray:
- lea patcher_builtin_multianewarray,itmp1
- jmp L_asm_wrapper_patcher_builtin_main
+ lea patcher_builtin_multianewarray,itmp1
+ jmp L_asm_wrapper_patcher_builtin_main
asm_wrapper_patcher_builtin_checkarraycast:
- lea patcher_builtin_checkarraycast,itmp1
- jmp L_asm_wrapper_patcher_builtin_main
+ lea patcher_builtin_checkarraycast,itmp1
+ jmp L_asm_wrapper_patcher_builtin_main
asm_wrapper_patcher_builtin_arrayinstanceof:
- lea patcher_builtin_arrayinstanceof,itmp1
+ lea patcher_builtin_arrayinstanceof,itmp1
L_asm_wrapper_patcher_builtin_main:
- sub $(1*8),%rsp /* stack frame (16-byte aligned) */
- mov a0,0*8(%rsp) /* save argument */
- mov %rsp,a0 /* pass stack pointer */
- add $(1*8),a0
- call *itmp1 /* call the patcher function */
- mov 0*8(%rsp),a0 /* restore argument */
- add $(1*8),%rsp /* remove stack frame */
- test v0,v0 /* exception thrown? */
- jz L_asm_wrapper_patcher_exception
- ret /* call new patched code */
+ sub $(1*8),%rsp /* stack frame (16-byte aligned) */
+ mov a0,0*8(%rsp) /* save argument */
+ mov %rsp,a0 /* pass stack pointer */
+ add $(1*8),a0
+ call *itmp1 /* call the patcher function */
+ mov 0*8(%rsp),a0 /* restore argument */
+ add $(1*8),%rsp /* remove stack frame */
+ test v0,v0 /* exception thrown? */
+ jz L_asm_wrapper_patcher_exception
+ ret /* call new patched code */
+
+
/********************* function asm_builtin_monitorenter ***********************
jmp builtin_monitorenter /* else call builtin_monitorenter */
nb_monitorenter:
- call new_nullpointerexception
- pop %r10 /* delete return address */
- sub $3,%r10 /* faulting address is ra - 3 */
- jmp asm_handle_exception
+ /*call new_nullpointerexception*/
+ pop xpc /* delete return address */
+ sub $3,xpc /* faulting address is ra - 3 */
+ mov string_java_lang_NullPointerException,xptr
+ jmp asm_throw_and_handle_exception
#endif
jmp builtin_monitorexit /* else call builtin_monitorenter */
nb_monitorexit:
- call new_nullpointerexception
- pop %r10 /* delete return address */
- sub $3,%r10 /* faulting address is ra - 3 */
- jmp asm_handle_exception
+ /*call new_nullpointerexception*/
+ pop xpc /* delete return address */
+ sub $3,xpc /* faulting address is ra - 3 */
+ mov string_java_lang_NullPointerException,xptr
+ jmp asm_throw_and_handle_exception
#endif
ret
nb_carray_throw:
- call new_classcastexception
+ /*call new_classcastexception*/
add $24,%rsp
- pop %r10 /* delete return address */
- sub $3,%r10 /* faulting address is ra - 3 */
- jmp asm_handle_exception
+ pop xpc /* delete return address */
+ sub $3,xpc /* faulting address is ra - 3 */
+ mov string_java_lang_ClassCastException,xptr
+ jmp asm_throw_and_handle_exception
/* asm_builtin_aastore *********************************************************
ret
nb_aastore_null:
- call new_nullpointerexception
add $24,%rsp
- pop %r10 /* delete return address */
- sub $3,%r10 /* faulting address is return adress - 3 */
- jmp asm_handle_exception
+ pop xpc /* delete return address from stack */
+ sub $3,xpc /* faulting address is return adress - 3 */
+ mov string_java_lang_NullPointerException,xptr
+ jmp asm_throw_and_handle_exception
nb_aastore_bound:
mov %rsi,%rdi /* move index into a0 */
jmp asm_handle_exception
nb_aastore_throw:
- call new_arraystoreexception
+ /*call new_arraystoreexception*/
add $24,%rsp
- pop %r10 /* delete return address */
- sub $3,%r10 /* faulting address is return adress - 3 */
- jmp asm_handle_exception
+ pop xpc /* delete return address */
+ sub $3,xpc /* faulting address is return adress - 3 */
+ mov string_java_lang_ArrayStoreException,xptr
+ jmp asm_throw_and_handle_exception
/******************* function asm_initialize_thread_stack **********************
ret
+
+
+/************************ function asm_prepare_native_stackinfo ****************************
+* *
+* creates a stackfame for the begin of a native function (either builtin or not ) *
+* expected stack at begin of function *
+* .... *
+* address of the jit call which invokes the native *
+* begin address of stack frame of the java method *
+* method pointer or 0 (for built ins) *
+* padding for stackframesize 16*n+8 *
+* return address *
+* *
+* at end of function: *
+* ... *
+* address of the jit call which invokes the native *
+* begin address of stack frame of the java method *
+* method pointer or 0 (for built ins) *
+* address of thread specific top of native list *
+* old value of thread specific head *
+* padding for stackframesize 16*n+8) *
+* return address *
+* *
+* .... *
+* This thing is less efficient than the original #define (callerside) *
+* destroyes REG_ITMP2, keeps REG_ITMP1 *
+********************************************************************************************/
+
+
+asm_prepare_native_stackinfo:
+ sub $16,%rsp /*space for the 2 new pointers*/
+ mov 16(%rsp),itmp2
+ mov itmp2,(%rsp)
+ push itmp1
+ call builtin_asm_get_stackframeinfo
+
+ mov itmp1, 32(%rsp)
+ mov (itmp1),itmp2
+ mov itmp2,24(%rsp)
+ mov %rsp,itmp2
+ add $24,itmp2
+ mov itmp2,(itmp1)
+ pop itmp1
+ ret
+
+
+
+/************************ function asm_remove _native_stackinfo *******************************************
+* *
+* removes a stackfame for the begin of a native function (either builtin or not) *
+* expected stack at begin of function *
+* address of the jit call which invokes the native *
+* begin address of stack frame of the java method *
+* method pointer or 0 (for built ins) *
+* address thread specific top of native list *
+* old value of thread specific head *
+* padding *
+* return address *
+* *
+* at end of function: *
+* .... *
+* return adresss of the jit call which invokes the native *
+* padding *
+* return address *
+* *
+* *
+* *
+* This thing is less efficient than the original #define (callerside), uses ITMP2,uses ITMP3,keeps ITMP1 *
+***********************************************************************************************************/
+
+asm_remove_native_stackinfo:
+ mov 16(%rsp),itmp2
+ mov 24(%rsp),itmp3
+ mov itmp2,(itmp3)
+ pop itmp3
+ add $32,%rsp
+ push itmp3
+ ret
+
+
+
+asm_throw_and_handle_exception:
+ push xpc /* the pushed XPC is directly below the java frame*/
+ push $0
+ push $0
+ push $0 /*padding*/
+ call asm_prepare_native_stackinfo /* be aware of the stack effect and calling convention explained above*/
+ mov itmp1,%rdi
+
+ call new_exception
+
+ call asm_remove_native_stackinfo /* be aware of the stack effect and calling convention explained above*/
+
+ pop xpc
+ pop xpc
+
+ jmp asm_handle_exception
+ ret /*should never be reached */
+
+
+asm_throw_and_handle_hardware_arithmetic_exception:
+
+ push xpc
+ push $0 /* the pushed XPC is directly below the java frame*/
+ push $0
+ push $0 /*padding*/
+ call asm_prepare_native_stackinfo /* be aware of the stack effect and calling convention explained above*/
+
+ mov string_java_lang_ArithmeticException_message,%rsi
+ mov string_java_lang_ArithmeticException,%rdi
+
+ call new_exception_message
+
+ call asm_remove_native_stackinfo /* be aware of the stack effect and calling convention explained above*/
+ pop xpc
+ pop xpc
+
+ jmp asm_handle_exception
+ ret /*should never be reached */
+
+
asm_getclassvalues_atomic:
_crit_restart2:
_crit_begin2:
#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
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