Linux kernel mirror (for testing)
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linux
1#ifndef _LINUX_ELFCORE_H
2#define _LINUX_ELFCORE_H
3
4#include <linux/user.h>
5#include <linux/bug.h>
6#include <linux/sched/task_stack.h>
7
8#include <asm/elf.h>
9#include <uapi/linux/elfcore.h>
10
11struct coredump_params;
12
13static inline void elf_core_copy_regs(elf_gregset_t *elfregs, struct pt_regs *regs)
14{
15#ifdef ELF_CORE_COPY_REGS
16 ELF_CORE_COPY_REGS((*elfregs), regs)
17#else
18 BUG_ON(sizeof(*elfregs) != sizeof(*regs));
19 *(struct pt_regs *)elfregs = *regs;
20#endif
21}
22
23static inline void elf_core_copy_kernel_regs(elf_gregset_t *elfregs, struct pt_regs *regs)
24{
25#ifdef ELF_CORE_COPY_KERNEL_REGS
26 ELF_CORE_COPY_KERNEL_REGS((*elfregs), regs);
27#else
28 elf_core_copy_regs(elfregs, regs);
29#endif
30}
31
32static inline int elf_core_copy_task_regs(struct task_struct *t, elf_gregset_t* elfregs)
33{
34#if defined (ELF_CORE_COPY_TASK_REGS)
35 return ELF_CORE_COPY_TASK_REGS(t, elfregs);
36#elif defined (task_pt_regs)
37 elf_core_copy_regs(elfregs, task_pt_regs(t));
38#endif
39 return 0;
40}
41
42extern int dump_fpu (struct pt_regs *, elf_fpregset_t *);
43
44static inline int elf_core_copy_task_fpregs(struct task_struct *t, struct pt_regs *regs, elf_fpregset_t *fpu)
45{
46#ifdef ELF_CORE_COPY_FPREGS
47 return ELF_CORE_COPY_FPREGS(t, fpu);
48#else
49 return dump_fpu(regs, fpu);
50#endif
51}
52
53#ifdef ELF_CORE_COPY_XFPREGS
54static inline int elf_core_copy_task_xfpregs(struct task_struct *t, elf_fpxregset_t *xfpu)
55{
56 return ELF_CORE_COPY_XFPREGS(t, xfpu);
57}
58#endif
59
60/*
61 * These functions parameterize elf_core_dump in fs/binfmt_elf.c to write out
62 * extra segments containing the gate DSO contents. Dumping its
63 * contents makes post-mortem fully interpretable later without matching up
64 * the same kernel and hardware config to see what PC values meant.
65 * Dumping its extra ELF program headers includes all the other information
66 * a debugger needs to easily find how the gate DSO was being used.
67 */
68extern Elf_Half elf_core_extra_phdrs(void);
69extern int
70elf_core_write_extra_phdrs(struct coredump_params *cprm, loff_t offset);
71extern int
72elf_core_write_extra_data(struct coredump_params *cprm);
73extern size_t elf_core_extra_data_size(void);
74
75#endif /* _LINUX_ELFCORE_H */