LXR linux/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
  14struct 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__
  26typedef elf_greg_t greg_t;
  27typedef elf_gregset_t gregset_t;
  28typedef elf_fpregset_t fpregset_t;
  29typedef 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 */
  42struct 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
  84struct 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__
 100typedef struct elf_prstatus prstatus_t;
 101typedef struct elf_prpsinfo prpsinfo_t;
 102#define PRARGSZ ELF_PRARGSZ 
 103#endif
 104
 105#ifdef __KERNEL__
 106static 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
 116static 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
 125static 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
 135extern int dump_fpu (struct pt_regs *, elf_fpregset_t *);
 136
 137static 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
 147static 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/*
 154 * These functions parameterize elf_core_dump in fs/binfmt_elf.c to write out
 155 * extra segments containing the gate DSO contents.  Dumping its
 156 * contents makes post-mortem fully interpretable later without matching up
 157 * the same kernel and hardware config to see what PC values meant.
 158 * Dumping its extra ELF program headers includes all the other information
 159 * a debugger needs to easily find how the gate DSO was being used.
 160 */
 161extern Elf_Half elf_core_extra_phdrs(void);
 162extern int
 163elf_core_write_extra_phdrs(struct file *file, loff_t offset, size_t *size,
 164                           unsigned long limit);
 165extern int
 166elf_core_write_extra_data(struct file *file, size_t *size, unsigned long limit);
 167extern size_t elf_core_extra_data_size(void);
 168
 169#endif /* __KERNEL__ */
 170
 171#endif /* _LINUX_ELFCORE_H */
 172