Linux Kernel  3.7.1
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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 
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 */