diff options
Diffstat (limited to 'include/asm-ia64/unwind.h')
| -rw-r--r-- | include/asm-ia64/unwind.h | 158 |
1 files changed, 141 insertions, 17 deletions
diff --git a/include/asm-ia64/unwind.h b/include/asm-ia64/unwind.h index 038edb798..60bb46cf9 100644 --- a/include/asm-ia64/unwind.h +++ b/include/asm-ia64/unwind.h @@ -2,8 +2,8 @@ #define _ASM_IA64_UNWIND_H /* - * Copyright (C) 1999 Hewlett-Packard Co - * Copyright (C) 1999 David Mosberger-Tang <davidm@hpl.hp.com> + * Copyright (C) 1999-2000 Hewlett-Packard Co + * Copyright (C) 1999-2000 David Mosberger-Tang <davidm@hpl.hp.com> * * A simple API for unwinding kernel stacks. This is used for * debugging and error reporting purposes. The kernel doesn't need @@ -16,27 +16,72 @@ struct task_struct; /* forward declaration */ struct switch_stack; /* forward declaration */ +enum unw_application_register { + UNW_AR_BSP, + UNW_AR_BSPSTORE, + UNW_AR_PFS, + UNW_AR_RNAT, + UNW_AR_UNAT, + UNW_AR_LC, + UNW_AR_EC, + UNW_AR_FPSR, + UNW_AR_RSC, + UNW_AR_CCV +}; + /* * The following declarations are private to the unwind * implementation: */ -struct ia64_stack { - unsigned long *limit; - unsigned long *top; +struct unw_stack { + unsigned long limit; + unsigned long top; }; +#define UNW_FLAG_INTERRUPT_FRAME (1UL << 0) + /* * No user of this module should every access this structure directly * as it is subject to change. It is declared here solely so we can * use automatic variables. */ -struct ia64_frame_info { - struct ia64_stack regstk; - unsigned long *bsp; - unsigned long top_rnat; /* RSE NaT collection at top of backing store */ - unsigned long cfm; +struct unw_frame_info { + struct unw_stack regstk; + struct unw_stack memstk; + unsigned int flags; + short hint; + short prev_script; + unsigned long bsp; + unsigned long sp; /* stack pointer */ + unsigned long psp; /* previous sp */ unsigned long ip; /* instruction pointer */ + unsigned long pr_val; /* current predicates */ + unsigned long *cfm; + + struct task_struct *task; + struct switch_stack *sw; + + /* preserved state: */ + unsigned long *pbsp; /* previous bsp */ + unsigned long *bspstore; + unsigned long *pfs; + unsigned long *rnat; + unsigned long *rp; + unsigned long *pri_unat; + unsigned long *unat; + unsigned long *pr; + unsigned long *lc; + unsigned long *fpsr; + struct unw_ireg { + unsigned long *loc; + struct unw_ireg_nat { + int type : 3; /* enum unw_nat_type */ + signed int off; /* NaT word is at loc+nat.off */ + } nat; + } r4, r5, r6, r7; + unsigned long *b1, *b2, *b3, *b4, *b5; + struct ia64_fpreg *f2, *f3, *f4, *f5, *fr[16]; }; /* @@ -44,10 +89,22 @@ struct ia64_frame_info { */ /* + * Initialize unwind support. + */ +extern void unw_init (void); + +extern void *unw_add_unwind_table (const char *name, unsigned long segment_base, unsigned long gp, + void *table_start, void *table_end); + +extern void unw_remove_unwind_table (void *handle); + +/* * Prepare to unwind blocked task t. */ -extern void ia64_unwind_init_from_blocked_task (struct ia64_frame_info *info, - struct task_struct *t); +extern void unw_init_from_blocked_task (struct unw_frame_info *info, struct task_struct *t); + +extern void unw_init_frame_info (struct unw_frame_info *info, struct task_struct *t, + struct switch_stack *sw); /* * Prepare to unwind the current task. For this to work, the kernel @@ -63,15 +120,82 @@ extern void ia64_unwind_init_from_blocked_task (struct ia64_frame_info *info, * | struct switch_stack | * +---------------------+ */ -extern void ia64_unwind_init_from_current (struct ia64_frame_info *info, struct pt_regs *regs); +extern void unw_init_from_current (struct unw_frame_info *info, struct pt_regs *regs); + +/* + * Prepare to unwind the currently running thread. + */ +extern void unw_init_running (void (*callback)(struct unw_frame_info *info, void *arg), void *arg); /* * Unwind to previous to frame. Returns 0 if successful, negative * number in case of an error. */ -extern int ia64_unwind_to_previous_frame (struct ia64_frame_info *info); +extern int unw_unwind (struct unw_frame_info *info); + +/* + * Unwind until the return pointer is in user-land (or until an error + * occurs). Returns 0 if successful, negative number in case of + * error. + */ +extern int unw_unwind_to_user (struct unw_frame_info *info); + +#define unw_get_ip(info,vp) ({*(vp) = (info)->ip; 0;}) +#define unw_get_sp(info,vp) ({*(vp) = (unsigned long) (info)->sp; 0;}) +#define unw_get_psp(info,vp) ({*(vp) = (unsigned long) (info)->psp; 0;}) +#define unw_get_bsp(info,vp) ({*(vp) = (unsigned long) (info)->bsp; 0;}) +#define unw_get_cfm(info,vp) ({*(vp) = *(info)->cfm; 0;}) +#define unw_set_cfm(info,val) ({*(info)->cfm = (val); 0;}) + +static inline int +unw_get_rp (struct unw_frame_info *info, unsigned long *val) +{ + if (!info->rp) + return -1; + *val = *info->rp; + return 0; +} + +extern int unw_access_gr (struct unw_frame_info *, int, unsigned long *, char *, int); +extern int unw_access_br (struct unw_frame_info *, int, unsigned long *, int); +extern int unw_access_fr (struct unw_frame_info *, int, struct ia64_fpreg *, int); +extern int unw_access_ar (struct unw_frame_info *, int, unsigned long *, int); +extern int unw_access_pr (struct unw_frame_info *, unsigned long *, int); + +static inline int +unw_set_gr (struct unw_frame_info *i, int n, unsigned long v, char nat) +{ + return unw_access_gr(i, n, &v, &nat, 1); +} + +static inline int +unw_set_br (struct unw_frame_info *i, int n, unsigned long v) +{ + return unw_access_br(i, n, &v, 1); +} + +static inline int +unw_set_fr (struct unw_frame_info *i, int n, struct ia64_fpreg v) +{ + return unw_access_fr(i, n, &v, 1); +} + +static inline int +unw_set_ar (struct unw_frame_info *i, int n, unsigned long v) +{ + return unw_access_ar(i, n, &v, 1); +} + +static inline int +unw_set_pr (struct unw_frame_info *i, unsigned long v) +{ + return unw_access_pr(i, &v, 1); +} -#define ia64_unwind_get_ip(info) ((info)->ip) -#define ia64_unwind_get_bsp(info) ((unsigned long) (info)->bsp) +#define unw_get_gr(i,n,v,nat) unw_access_gr(i,n,v,nat,0) +#define unw_get_br(i,n,v) unw_access_br(i,n,v,0) +#define unw_get_fr(i,n,v) unw_access_fr(i,n,v,0) +#define unw_get_ar(i,n,v) unw_access_ar(i,n,v,0) +#define unw_get_pr(i,v) unw_access_pr(i,v,0) -#endif /* _ASM_IA64_UNWIND_H */ +#endif /* _ASM_UNWIND_H */ |