include/asm-parisc/unwind.h

   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