linux/include/linux/elfcore.h
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   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
  15struct 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__
  27typedef elf_greg_t greg_t;
  28typedef elf_gregset_t gregset_t;
  29typedef elf_fpregset_t fpregset_t;
  30typedef 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 */
  43struct 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
  85struct 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__
 101typedef struct elf_prstatus prstatus_t;
 102typedef struct elf_prpsinfo prpsinfo_t;
 103#define PRARGSZ ELF_PRARGSZ 
 104#endif
 105
 106#ifdef __KERNEL__
 107static 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
 117static 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
 126static 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
 136extern int dump_fpu (struct pt_regs *, elf_fpregset_t *);
 137
 138static 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
 148static 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 */
 162extern Elf_Half elf_core_extra_phdrs(void);
 163extern int
 164elf_core_write_extra_phdrs(struct file *file, loff_t offset, size_t *size,
 165                           unsigned long limit);
 166extern int
 167elf_core_write_extra_data(struct file *file, size_t *size, unsigned long limit);
 168extern size_t elf_core_extra_data_size(void);
 169
 170#endif /* __KERNEL__ */
 171
 172#endif /* _LINUX_ELFCORE_H */
 173
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