linux/include/linux/elfcore.h
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   1#ifndef _LINUX_ELFCORE_H
   2#define _LINUX_ELFCORE_H
   3
   4#include <linux/user.h>
   5#include <linux/bug.h>
   6#include <asm/elf.h>
   7#include <uapi/linux/elfcore.h>
   8
   9static inline void elf_core_copy_regs(elf_gregset_t *elfregs, struct pt_regs *regs)
  10{
  11#ifdef ELF_CORE_COPY_REGS
  12        ELF_CORE_COPY_REGS((*elfregs), regs)
  13#else
  14        BUG_ON(sizeof(*elfregs) != sizeof(*regs));
  15        *(struct pt_regs *)elfregs = *regs;
  16#endif
  17}
  18
  19static inline void elf_core_copy_kernel_regs(elf_gregset_t *elfregs, struct pt_regs *regs)
  20{
  21#ifdef ELF_CORE_COPY_KERNEL_REGS
  22        ELF_CORE_COPY_KERNEL_REGS((*elfregs), regs);
  23#else
  24        elf_core_copy_regs(elfregs, regs);
  25#endif
  26}
  27
  28static inline int elf_core_copy_task_regs(struct task_struct *t, elf_gregset_t* elfregs)
  29{
  30#if defined (ELF_CORE_COPY_TASK_REGS)
  31        return ELF_CORE_COPY_TASK_REGS(t, elfregs);
  32#elif defined (task_pt_regs)
  33        elf_core_copy_regs(elfregs, task_pt_regs(t));
  34#endif
  35        return 0;
  36}
  37
  38extern int dump_fpu (struct pt_regs *, elf_fpregset_t *);
  39
  40static inline int elf_core_copy_task_fpregs(struct task_struct *t, struct pt_regs *regs, elf_fpregset_t *fpu)
  41{
  42#ifdef ELF_CORE_COPY_FPREGS
  43        return ELF_CORE_COPY_FPREGS(t, fpu);
  44#else
  45        return dump_fpu(regs, fpu);
  46#endif
  47}
  48
  49#ifdef ELF_CORE_COPY_XFPREGS
  50static inline int elf_core_copy_task_xfpregs(struct task_struct *t, elf_fpxregset_t *xfpu)
  51{
  52        return ELF_CORE_COPY_XFPREGS(t, xfpu);
  53}
  54#endif
  55
  56/*
  57 * These functions parameterize elf_core_dump in fs/binfmt_elf.c to write out
  58 * extra segments containing the gate DSO contents.  Dumping its
  59 * contents makes post-mortem fully interpretable later without matching up
  60 * the same kernel and hardware config to see what PC values meant.
  61 * Dumping its extra ELF program headers includes all the other information
  62 * a debugger needs to easily find how the gate DSO was being used.
  63 */
  64extern Elf_Half elf_core_extra_phdrs(void);
  65extern int
  66elf_core_write_extra_phdrs(struct file *file, loff_t offset, size_t *size,
  67                           unsigned long limit);
  68extern int
  69elf_core_write_extra_data(struct file *file, size_t *size, unsigned long limit);
  70extern size_t elf_core_extra_data_size(void);
  71
  72#endif /* _LINUX_ELFCORE_H */
  73
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