include/linux/elfcore.h

   1 #ifndef _LINUX_ELFCORE_H
   2 #define _LINUX_ELFCORE_H
   3
   4 #include <linux/types.h>
   5 #include <linux/signal.h>
   6 #include <linux/time.h>
   7 #ifdef __KERNEL__
   8 #include <linux/user.h>
   9 #endif
  10 #include <linux/ptrace.h>
  11 #include <linux/elf.h>
  12 #include <linux/fs.h>
  13
  14 struct elf_siginfo
  15 {
  16         int     si_signo;                       /* signal number */
  17         int     si_code;                        /* extra code */
  18         int     si_errno;                       /* errno */
  19 };
  20
  21 #ifdef __KERNEL__
  22 #include <asm/elf.h>
  23 #endif
  24
  25 #ifndef __KERNEL__
  26 typedef elf_greg_t greg_t;
  27 typedef elf_gregset_t gregset_t;
  28 typedef elf_fpregset_t fpregset_t;
  29 typedef elf_fpxregset_t fpxregset_t;
  30 #define NGREG ELF_NGREG
  31 #endif
  32
  33 /*
  34  * Definitions to generate Intel SVR4-like core files.
  35  * These mostly have the same names as the SVR4 types with "elf_"
  36  * tacked on the front to prevent clashes with linux definitions,
  37  * and the typedef forms have been avoided.  This is mostly like
  38  * the SVR4 structure, but more Linuxy, with things that Linux does
  39  * not support and which gdb doesn't really use excluded.
  40  * Fields present but not used are marked with "XXX".
  41  */
  42 struct elf_prstatus
  43 {
  44 #if 0
  45         long    pr_flags;       /* XXX Process flags */
  46         short   pr_why;         /* XXX Reason for process halt */
  47         short   pr_what;        /* XXX More detailed reason */
  48 #endif
  49         struct elf_siginfo pr_info;     /* Info associated with signal */
  50         short   pr_cursig;              /* Current signal */
  51         unsigned long pr_sigpend;       /* Set of pending signals */
  52         unsigned long pr_sighold;       /* Set of held signals */
  53 #if 0
  54         struct sigaltstack pr_altstack; /* Alternate stack info */
  55         struct sigaction pr_action;     /* Signal action for current sig */
  56 #endif
  57         pid_t   pr_pid;
  58         pid_t   pr_ppid;
  59         pid_t   pr_pgrp;
  60         pid_t   pr_sid;
  61         struct timeval pr_utime;        /* User time */
  62         struct timeval pr_stime;        /* System time */
  63         struct timeval pr_cutime;       /* Cumulative user time */
  64         struct timeval pr_cstime;       /* Cumulative system time */
  65 #if 0
  66         long    pr_instr;               /* Current instruction */
  67 #endif
  68         elf_gregset_t pr_reg;   /* GP registers */
  69 #ifdef CONFIG_BINFMT_ELF_FDPIC
  70         /* When using FDPIC, the loadmap addresses need to be communicated
  71          * to GDB in order for GDB to do the necessary relocations.  The
  72          * fields (below) used to communicate this information are placed
  73          * immediately after ``pr_reg'', so that the loadmap addresses may
  74          * be viewed as part of the register set if so desired.
  75          */
  76         unsigned long pr_exec_fdpic_loadmap;
  77         unsigned long pr_interp_fdpic_loadmap;
  78 #endif
  79         int pr_fpvalid;         /* True if math co-processor being used.  */
  80 };
  81
  82 #define ELF_PRARGSZ     (80)    /* Number of chars for args */
  83
  84 struct elf_prpsinfo
  85 {
  86         char    pr_state;       /* numeric process state */
  87         char    pr_sname;       /* char for pr_state */
  88         char    pr_zomb;        /* zombie */
  89         char    pr_nice;        /* nice val */
  90         unsigned long pr_flag;  /* flags */
  91         __kernel_uid_t  pr_uid;
  92         __kernel_gid_t  pr_gid;
  93         pid_t   pr_pid, pr_ppid, pr_pgrp, pr_sid;
  94         /* Lots missing */
  95         char    pr_fname[16];   /* filename of executable */
  96         char    pr_psargs[ELF_PRARGSZ]; /* initial part of arg list */
  97 };
  98
  99 #ifndef __KERNEL__
 100 typedef struct elf_prstatus prstatus_t;
 101 typedef struct elf_prpsinfo prpsinfo_t;
 102 #define PRARGSZ ELF_PRARGSZ
 103 #endif
 104
 105 #ifdef __KERNEL__
 106 static inline void elf_core_copy_regs(elf_gregset_t *elfregs, struct pt_regs *regs)
 107 {
 108 #ifdef ELF_CORE_COPY_REGS
 109         ELF_CORE_COPY_REGS((*elfregs), regs)
 110 #else
 111         BUG_ON(sizeof(*elfregs) != sizeof(*regs));
 112         *(struct pt_regs *)elfregs = *regs;
 113 #endif
 114 }
 115
 116 static inline void elf_core_copy_kernel_regs(elf_gregset_t *elfregs, struct pt_regs *regs)
 117 {
 118 #ifdef ELF_CORE_COPY_KERNEL_REGS
 119         ELF_CORE_COPY_KERNEL_REGS((*elfregs), regs);
 120 #else
 121         elf_core_copy_regs(elfregs, regs);
 122 #endif
 123 }
 124
 125 static inline int elf_core_copy_task_regs(struct task_struct *t, elf_gregset_t* elfregs)
 126 {
 127 #if defined (ELF_CORE_COPY_TASK_REGS)
 128         return ELF_CORE_COPY_TASK_REGS(t, elfregs);
 129 #elif defined (task_pt_regs)
 130         elf_core_copy_regs(elfregs, task_pt_regs(t));
 131 #endif
 132         return 0;
 133 }
 134
 135 extern int dump_fpu (struct pt_regs *, elf_fpregset_t *);
 136
 137 static inline int elf_core_copy_task_fpregs(struct task_struct *t, struct pt_regs *regs, elf_fpregset_t *fpu)
 138 {
 139 #ifdef ELF_CORE_COPY_FPREGS
 140         return ELF_CORE_COPY_FPREGS(t, fpu);
 141 #else
 142         return dump_fpu(regs, fpu);
 143 #endif
 144 }
 145
 146 #ifdef ELF_CORE_COPY_XFPREGS
 147 static inline int elf_core_copy_task_xfpregs(struct task_struct *t, elf_fpxregset_t *xfpu)
 148 {
 149         return ELF_CORE_COPY_XFPREGS(t, xfpu);
 150 }
 151 #endif
 152
 153 #endif /* __KERNEL__ */
 154
 155 /*
 156  * These functions parameterize elf_core_dump in fs/binfmt_elf.c to write out
 157  * extra segments containing the gate DSO contents.  Dumping its
 158  * contents makes post-mortem fully interpretable later without matching up
 159  * the same kernel and hardware config to see what PC values meant.
 160  * Dumping its extra ELF program headers includes all the other information
 161  * a debugger needs to easily find how the gate DSO was being used.
 162  */
 163 extern Elf_Half elf_core_extra_phdrs(void);
 164 extern int
 165 elf_core_write_extra_phdrs(struct file *file, loff_t offset, size_t *size,
 166                            unsigned long limit);
 167 extern int
 168 elf_core_write_extra_data(struct file *file, size_t *size, unsigned long limit);
 169 extern size_t elf_core_extra_data_size(void);
 170
 171 #endif /* _LINUX_ELFCORE_H */