| Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame^] | 1 | #ifndef _UNWIND_H_ |
| 2 | #define _UNWIND_H_ |
| 3 | |
| 4 | #include <linux/list.h> |
| 5 | |
| 6 | /* From ABI specifications */ |
| 7 | struct unwind_table_entry { |
| 8 | unsigned int region_start; |
| 9 | unsigned int region_end; |
| 10 | unsigned int Cannot_unwind:1; /* 0 */ |
| 11 | unsigned int Millicode:1; /* 1 */ |
| 12 | unsigned int Millicode_save_sr0:1; /* 2 */ |
| 13 | unsigned int Region_description:2; /* 3..4 */ |
| 14 | unsigned int reserved1:1; /* 5 */ |
| 15 | unsigned int Entry_SR:1; /* 6 */ |
| 16 | unsigned int Entry_FR:4; /* number saved *//* 7..10 */ |
| 17 | unsigned int Entry_GR:5; /* number saved *//* 11..15 */ |
| 18 | unsigned int Args_stored:1; /* 16 */ |
| 19 | unsigned int Variable_Frame:1; /* 17 */ |
| 20 | unsigned int Separate_Package_Body:1; /* 18 */ |
| 21 | unsigned int Frame_Extension_Millicode:1; /* 19 */ |
| 22 | unsigned int Stack_Overflow_Check:1; /* 20 */ |
| 23 | unsigned int Two_Instruction_SP_Increment:1; /* 21 */ |
| 24 | unsigned int Ada_Region:1; /* 22 */ |
| 25 | unsigned int cxx_info:1; /* 23 */ |
| 26 | unsigned int cxx_try_catch:1; /* 24 */ |
| 27 | unsigned int sched_entry_seq:1; /* 25 */ |
| 28 | unsigned int reserved2:1; /* 26 */ |
| 29 | unsigned int Save_SP:1; /* 27 */ |
| 30 | unsigned int Save_RP:1; /* 28 */ |
| 31 | unsigned int Save_MRP_in_frame:1; /* 29 */ |
| 32 | unsigned int extn_ptr_defined:1; /* 30 */ |
| 33 | unsigned int Cleanup_defined:1; /* 31 */ |
| 34 | |
| 35 | unsigned int MPE_XL_interrupt_marker:1; /* 0 */ |
| 36 | unsigned int HP_UX_interrupt_marker:1; /* 1 */ |
| 37 | unsigned int Large_frame:1; /* 2 */ |
| 38 | unsigned int Pseudo_SP_Set:1; /* 3 */ |
| 39 | unsigned int reserved4:1; /* 4 */ |
| 40 | unsigned int Total_frame_size:27; /* 5..31 */ |
| 41 | }; |
| 42 | |
| 43 | struct unwind_table { |
| 44 | struct list_head list; |
| 45 | const char *name; |
| 46 | unsigned long gp; |
| 47 | unsigned long base_addr; |
| 48 | unsigned long start; |
| 49 | unsigned long end; |
| 50 | const struct unwind_table_entry *table; |
| 51 | unsigned long length; |
| 52 | }; |
| 53 | |
| 54 | struct unwind_frame_info { |
| 55 | struct task_struct *t; |
| 56 | /* Eventually we would like to be able to get at any of the registers |
| 57 | available; but for now we only try to get the sp and ip for each |
| 58 | frame */ |
| 59 | /* struct pt_regs regs; */ |
| 60 | unsigned long sp, ip, rp, r31; |
| 61 | unsigned long prev_sp, prev_ip; |
| 62 | }; |
| 63 | |
| 64 | struct unwind_table * |
| 65 | unwind_table_add(const char *name, unsigned long base_addr, |
| 66 | unsigned long gp, void *start, void *end); |
| 67 | void |
| 68 | unwind_table_remove(struct unwind_table *table); |
| 69 | |
| 70 | void unwind_frame_init(struct unwind_frame_info *info, struct task_struct *t, |
| 71 | struct pt_regs *regs); |
| 72 | void unwind_frame_init_from_blocked_task(struct unwind_frame_info *info, struct task_struct *t); |
| 73 | void unwind_frame_init_running(struct unwind_frame_info *info, struct pt_regs *regs); |
| 74 | int unwind_once(struct unwind_frame_info *info); |
| 75 | int unwind_to_user(struct unwind_frame_info *info); |
| 76 | |
| 77 | #endif |