1 /* SPDX-License-Identifier: GPL-2.0 */
2 #ifndef _LINUX_ELFCORE_H
3 #define _LINUX_ELFCORE_H
5 #include <linux/user.h>
7 #include <linux/sched/task_stack.h>
8 #include <linux/types.h>
9 #include <linux/signal.h>
10 #include <linux/time.h>
11 #include <linux/ptrace.h>
13 #include <linux/elf.h>
15 struct coredump_params;
19 int si_signo; /* signal number */
20 int si_code; /* extra code */
21 int si_errno; /* errno */
25 * Definitions to generate Intel SVR4-like core files.
26 * These mostly have the same names as the SVR4 types with "elf_"
27 * tacked on the front to prevent clashes with linux definitions,
28 * and the typedef forms have been avoided. This is mostly like
29 * the SVR4 structure, but more Linuxy, with things that Linux does
30 * not support and which gdb doesn't really use excluded.
34 struct elf_siginfo pr_info; /* Info associated with signal */
35 short pr_cursig; /* Current signal */
36 unsigned long pr_sigpend; /* Set of pending signals */
37 unsigned long pr_sighold; /* Set of held signals */
42 struct __kernel_old_timeval pr_utime; /* User time */
43 struct __kernel_old_timeval pr_stime; /* System time */
44 struct __kernel_old_timeval pr_cutime; /* Cumulative user time */
45 struct __kernel_old_timeval pr_cstime; /* Cumulative system time */
46 elf_gregset_t pr_reg; /* GP registers */
47 int pr_fpvalid; /* True if math co-processor being used. */
50 #define ELF_PRARGSZ (80) /* Number of chars for args */
54 char pr_state; /* numeric process state */
55 char pr_sname; /* char for pr_state */
56 char pr_zomb; /* zombie */
57 char pr_nice; /* nice val */
58 unsigned long pr_flag; /* flags */
59 __kernel_uid_t pr_uid;
60 __kernel_gid_t pr_gid;
61 pid_t pr_pid, pr_ppid, pr_pgrp, pr_sid;
63 char pr_fname[16]; /* filename of executable */
64 char pr_psargs[ELF_PRARGSZ]; /* initial part of arg list */
67 static inline void elf_core_copy_regs(elf_gregset_t *elfregs, struct pt_regs *regs)
69 #ifdef ELF_CORE_COPY_REGS
70 ELF_CORE_COPY_REGS((*elfregs), regs)
72 BUG_ON(sizeof(*elfregs) != sizeof(*regs));
73 *(struct pt_regs *)elfregs = *regs;
77 static inline void elf_core_copy_kernel_regs(elf_gregset_t *elfregs, struct pt_regs *regs)
79 #ifdef ELF_CORE_COPY_KERNEL_REGS
80 ELF_CORE_COPY_KERNEL_REGS((*elfregs), regs);
82 elf_core_copy_regs(elfregs, regs);
86 static inline int elf_core_copy_task_regs(struct task_struct *t, elf_gregset_t* elfregs)
88 #if defined (ELF_CORE_COPY_TASK_REGS)
89 return ELF_CORE_COPY_TASK_REGS(t, elfregs);
90 #elif defined (task_pt_regs)
91 elf_core_copy_regs(elfregs, task_pt_regs(t));
96 extern int dump_fpu (struct pt_regs *, elf_fpregset_t *);
98 static inline int elf_core_copy_task_fpregs(struct task_struct *t, struct pt_regs *regs, elf_fpregset_t *fpu)
100 #ifdef ELF_CORE_COPY_FPREGS
101 return ELF_CORE_COPY_FPREGS(t, fpu);
103 return dump_fpu(regs, fpu);
108 * These functions parameterize elf_core_dump in fs/binfmt_elf.c to write out
109 * extra segments containing the gate DSO contents. Dumping its
110 * contents makes post-mortem fully interpretable later without matching up
111 * the same kernel and hardware config to see what PC values meant.
112 * Dumping its extra ELF program headers includes all the other information
113 * a debugger needs to easily find how the gate DSO was being used.
115 extern Elf_Half elf_core_extra_phdrs(void);
117 elf_core_write_extra_phdrs(struct coredump_params *cprm, loff_t offset);
119 elf_core_write_extra_data(struct coredump_params *cprm);
120 extern size_t elf_core_extra_data_size(void);
122 #endif /* _LINUX_ELFCORE_H */