1
2#ifndef _ASM_IA64_UNWIND_H
3#define _ASM_IA64_UNWIND_H
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16
17struct task_struct;
18struct switch_stack;
19
20enum unw_application_register {
21 UNW_AR_BSP,
22 UNW_AR_BSPSTORE,
23 UNW_AR_PFS,
24 UNW_AR_RNAT,
25 UNW_AR_UNAT,
26 UNW_AR_LC,
27 UNW_AR_EC,
28 UNW_AR_FPSR,
29 UNW_AR_RSC,
30 UNW_AR_CCV,
31 UNW_AR_CSD,
32 UNW_AR_SSD
33};
34
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37
38
39
40struct unw_stack {
41 unsigned long limit;
42 unsigned long top;
43};
44
45#define UNW_FLAG_INTERRUPT_FRAME (1UL << 0)
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47
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50
51
52struct unw_frame_info {
53 struct unw_stack regstk;
54 struct unw_stack memstk;
55 unsigned int flags;
56 short hint;
57 short prev_script;
58
59
60 unsigned long bsp;
61 unsigned long sp;
62 unsigned long psp;
63 unsigned long ip;
64 unsigned long pr;
65 unsigned long *cfm_loc;
66 unsigned long pt;
67
68 struct task_struct *task;
69 struct switch_stack *sw;
70
71
72 unsigned long *bsp_loc;
73 unsigned long *bspstore_loc;
74 unsigned long *pfs_loc;
75 unsigned long *rnat_loc;
76 unsigned long *rp_loc;
77 unsigned long *pri_unat_loc;
78 unsigned long *unat_loc;
79 unsigned long *pr_loc;
80 unsigned long *lc_loc;
81 unsigned long *fpsr_loc;
82 struct unw_ireg {
83 unsigned long *loc;
84 struct unw_ireg_nat {
85 unsigned long type : 3;
86 signed long off : 61;
87 } nat;
88 } r4, r5, r6, r7;
89 unsigned long *b1_loc, *b2_loc, *b3_loc, *b4_loc, *b5_loc;
90 struct ia64_fpreg *f2_loc, *f3_loc, *f4_loc, *f5_loc, *fr_loc[16];
91};
92
93
94
95
96
97struct unw_table_entry {
98 u64 start_offset;
99 u64 end_offset;
100 u64 info_offset;
101};
102
103
104
105
106extern void unw_init (void);
107
108extern void *unw_add_unwind_table (const char *name, unsigned long segment_base, unsigned long gp,
109 const void *table_start, const void *table_end);
110
111extern void unw_remove_unwind_table (void *handle);
112
113
114
115
116extern void unw_init_from_blocked_task (struct unw_frame_info *info, struct task_struct *t);
117
118extern void unw_init_frame_info (struct unw_frame_info *info, struct task_struct *t,
119 struct switch_stack *sw);
120
121
122
123
124extern void unw_init_running (void (*callback)(struct unw_frame_info *info, void *arg), void *arg);
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129
130extern int unw_unwind (struct unw_frame_info *info);
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135
136
137extern int unw_unwind_to_user (struct unw_frame_info *info);
138
139#define unw_is_intr_frame(info) (((info)->flags & UNW_FLAG_INTERRUPT_FRAME) != 0)
140
141static inline int
142unw_get_ip (struct unw_frame_info *info, unsigned long *valp)
143{
144 *valp = (info)->ip;
145 return 0;
146}
147
148static inline int
149unw_get_sp (struct unw_frame_info *info, unsigned long *valp)
150{
151 *valp = (info)->sp;
152 return 0;
153}
154
155static inline int
156unw_get_psp (struct unw_frame_info *info, unsigned long *valp)
157{
158 *valp = (info)->psp;
159 return 0;
160}
161
162static inline int
163unw_get_bsp (struct unw_frame_info *info, unsigned long *valp)
164{
165 *valp = (info)->bsp;
166 return 0;
167}
168
169static inline int
170unw_get_cfm (struct unw_frame_info *info, unsigned long *valp)
171{
172 *valp = *(info)->cfm_loc;
173 return 0;
174}
175
176static inline int
177unw_set_cfm (struct unw_frame_info *info, unsigned long val)
178{
179 *(info)->cfm_loc = val;
180 return 0;
181}
182
183static inline int
184unw_get_rp (struct unw_frame_info *info, unsigned long *val)
185{
186 if (!info->rp_loc)
187 return -1;
188 *val = *info->rp_loc;
189 return 0;
190}
191
192extern int unw_access_gr (struct unw_frame_info *, int, unsigned long *, char *, int);
193extern int unw_access_br (struct unw_frame_info *, int, unsigned long *, int);
194extern int unw_access_fr (struct unw_frame_info *, int, struct ia64_fpreg *, int);
195extern int unw_access_ar (struct unw_frame_info *, int, unsigned long *, int);
196extern int unw_access_pr (struct unw_frame_info *, unsigned long *, int);
197
198static inline int
199unw_set_gr (struct unw_frame_info *i, int n, unsigned long v, char nat)
200{
201 return unw_access_gr(i, n, &v, &nat, 1);
202}
203
204static inline int
205unw_set_br (struct unw_frame_info *i, int n, unsigned long v)
206{
207 return unw_access_br(i, n, &v, 1);
208}
209
210static inline int
211unw_set_fr (struct unw_frame_info *i, int n, struct ia64_fpreg v)
212{
213 return unw_access_fr(i, n, &v, 1);
214}
215
216static inline int
217unw_set_ar (struct unw_frame_info *i, int n, unsigned long v)
218{
219 return unw_access_ar(i, n, &v, 1);
220}
221
222static inline int
223unw_set_pr (struct unw_frame_info *i, unsigned long v)
224{
225 return unw_access_pr(i, &v, 1);
226}
227
228#define unw_get_gr(i,n,v,nat) unw_access_gr(i,n,v,nat,0)
229#define unw_get_br(i,n,v) unw_access_br(i,n,v,0)
230#define unw_get_fr(i,n,v) unw_access_fr(i,n,v,0)
231#define unw_get_ar(i,n,v) unw_access_ar(i,n,v,0)
232#define unw_get_pr(i,v) unw_access_pr(i,v,0)
233
234#endif
235