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.
32 struct elf_prstatus_common
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 */
50 struct elf_prstatus_common common
;
51 elf_gregset_t pr_reg
; /* GP registers */
52 int pr_fpvalid
; /* True if math co-processor being used. */
55 #define ELF_PRARGSZ (80) /* Number of chars for args */
59 char pr_state
; /* numeric process state */
60 char pr_sname
; /* char for pr_state */
61 char pr_zomb
; /* zombie */
62 char pr_nice
; /* nice val */
63 unsigned long pr_flag
; /* flags */
64 __kernel_uid_t pr_uid
;
65 __kernel_gid_t pr_gid
;
66 pid_t pr_pid
, pr_ppid
, pr_pgrp
, pr_sid
;
68 char pr_fname
[16]; /* filename of executable */
69 char pr_psargs
[ELF_PRARGSZ
]; /* initial part of arg list */
72 static inline void elf_core_copy_regs(elf_gregset_t
*elfregs
, struct pt_regs
*regs
)
74 #ifdef ELF_CORE_COPY_REGS
75 ELF_CORE_COPY_REGS((*elfregs
), regs
)
77 BUG_ON(sizeof(*elfregs
) != sizeof(*regs
));
78 *(struct pt_regs
*)elfregs
= *regs
;
82 static inline void elf_core_copy_kernel_regs(elf_gregset_t
*elfregs
, struct pt_regs
*regs
)
84 #ifdef ELF_CORE_COPY_KERNEL_REGS
85 ELF_CORE_COPY_KERNEL_REGS((*elfregs
), regs
);
87 elf_core_copy_regs(elfregs
, regs
);
91 static inline int elf_core_copy_task_regs(struct task_struct
*t
, elf_gregset_t
* elfregs
)
93 #if defined (ELF_CORE_COPY_TASK_REGS)
94 return ELF_CORE_COPY_TASK_REGS(t
, elfregs
);
95 #elif defined (task_pt_regs)
96 elf_core_copy_regs(elfregs
, task_pt_regs(t
));
101 extern int dump_fpu (struct pt_regs
*, elf_fpregset_t
*);
103 static inline int elf_core_copy_task_fpregs(struct task_struct
*t
, struct pt_regs
*regs
, elf_fpregset_t
*fpu
)
105 #ifdef ELF_CORE_COPY_FPREGS
106 return ELF_CORE_COPY_FPREGS(t
, fpu
);
108 return dump_fpu(regs
, fpu
);
112 #if defined(CONFIG_UM) || defined(CONFIG_IA64)
114 * These functions parameterize elf_core_dump in fs/binfmt_elf.c to write out
115 * extra segments containing the gate DSO contents. Dumping its
116 * contents makes post-mortem fully interpretable later without matching up
117 * the same kernel and hardware config to see what PC values meant.
118 * Dumping its extra ELF program headers includes all the other information
119 * a debugger needs to easily find how the gate DSO was being used.
121 extern Elf_Half
elf_core_extra_phdrs(void);
123 elf_core_write_extra_phdrs(struct coredump_params
*cprm
, loff_t offset
);
125 elf_core_write_extra_data(struct coredump_params
*cprm
);
126 extern size_t elf_core_extra_data_size(void);
128 static inline Elf_Half
elf_core_extra_phdrs(void)
133 static inline int elf_core_write_extra_phdrs(struct coredump_params
*cprm
, loff_t offset
)
138 static inline int elf_core_write_extra_data(struct coredump_params
*cprm
)
143 static inline size_t elf_core_extra_data_size(void)
149 #endif /* _LINUX_ELFCORE_H */