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 static 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
  19 static 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
  28 static 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
  38 extern int dump_fpu (struct pt_regs *, elf_fpregset_t *);
  39
  40 static 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
  50 static 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  */
  64 extern Elf_Half elf_core_extra_phdrs(void);
  65 extern int
  66 elf_core_write_extra_phdrs(struct file *file, loff_t offset, size_t *size,
  67                            unsigned long limit);
  68 extern int
  69 elf_core_write_extra_data(struct file *file, size_t *size, unsigned long limit);
  70 extern size_t elf_core_extra_data_size(void);
  71
  72 #endif /* _LINUX_ELFCORE_H */