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