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 int unwind_init(void); 78 79 #endif 80