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
9struct coredump_params;
10
11static 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
21static 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
30static 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
40extern int dump_fpu (struct pt_regs *, elf_fpregset_t *);
41
42static 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
52static 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 */
66extern Elf_Half elf_core_extra_phdrs(void);
67extern int
68elf_core_write_extra_phdrs(struct coredump_params *cprm, loff_t offset);
69extern int
70elf_core_write_extra_data(struct coredump_params *cprm);
71extern size_t elf_core_extra_data_size(void);
72
73#endif /* _LINUX_ELFCORE_H */
74