include/linux/elfcore.h

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