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b2441318 | 1 | /* SPDX-License-Identifier: GPL-2.0 */ |
1da177e4 LT |
2 | #ifndef _LINUX_ELFCORE_H |
3 | #define _LINUX_ELFCORE_H | |
4 | ||
1da177e4 | 5 | #include <linux/user.h> |
187f1882 | 6 | #include <linux/bug.h> |
68db0cf1 | 7 | #include <linux/sched/task_stack.h> |
1e6b57d6 AV |
8 | #include <linux/types.h> |
9 | #include <linux/signal.h> | |
10 | #include <linux/time.h> | |
11 | #include <linux/ptrace.h> | |
12 | #include <linux/fs.h> | |
13 | #include <linux/elf.h> | |
1da177e4 | 14 | |
506f21c5 AV |
15 | struct coredump_params; |
16 | ||
1e6b57d6 AV |
17 | struct elf_siginfo |
18 | { | |
19 | int si_signo; /* signal number */ | |
20 | int si_code; /* extra code */ | |
21 | int si_errno; /* errno */ | |
22 | }; | |
23 | ||
24 | /* | |
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. | |
31 | */ | |
f2485a2d | 32 | struct elf_prstatus_common |
1e6b57d6 AV |
33 | { |
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 */ | |
38 | pid_t pr_pid; | |
39 | pid_t pr_ppid; | |
40 | pid_t pr_pgrp; | |
41 | pid_t pr_sid; | |
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 */ | |
f2485a2d AV |
46 | }; |
47 | ||
48 | struct elf_prstatus | |
49 | { | |
50 | struct elf_prstatus_common common; | |
1e6b57d6 | 51 | elf_gregset_t pr_reg; /* GP registers */ |
1e6b57d6 AV |
52 | int pr_fpvalid; /* True if math co-processor being used. */ |
53 | }; | |
54 | ||
55 | #define ELF_PRARGSZ (80) /* Number of chars for args */ | |
56 | ||
57 | struct elf_prpsinfo | |
58 | { | |
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; | |
67 | /* Lots missing */ | |
95af469c YS |
68 | /* |
69 | * The hard-coded 16 is derived from TASK_COMM_LEN, but it can't be | |
70 | * changed as it is exposed to userspace. We'd better make it hard-coded | |
71 | * here. | |
72 | */ | |
1e6b57d6 AV |
73 | char pr_fname[16]; /* filename of executable */ |
74 | char pr_psargs[ELF_PRARGSZ]; /* initial part of arg list */ | |
75 | }; | |
76 | ||
1da177e4 LT |
77 | static inline void elf_core_copy_regs(elf_gregset_t *elfregs, struct pt_regs *regs) |
78 | { | |
79 | #ifdef ELF_CORE_COPY_REGS | |
80 | ELF_CORE_COPY_REGS((*elfregs), regs) | |
81 | #else | |
82 | BUG_ON(sizeof(*elfregs) != sizeof(*regs)); | |
83 | *(struct pt_regs *)elfregs = *regs; | |
84 | #endif | |
85 | } | |
86 | ||
6cd61c0b TH |
87 | static inline void elf_core_copy_kernel_regs(elf_gregset_t *elfregs, struct pt_regs *regs) |
88 | { | |
89 | #ifdef ELF_CORE_COPY_KERNEL_REGS | |
90 | ELF_CORE_COPY_KERNEL_REGS((*elfregs), regs); | |
91 | #else | |
92 | elf_core_copy_regs(elfregs, regs); | |
93 | #endif | |
94 | } | |
95 | ||
1da177e4 LT |
96 | static inline int elf_core_copy_task_regs(struct task_struct *t, elf_gregset_t* elfregs) |
97 | { | |
e9bf0cc7 | 98 | #if defined (ELF_CORE_COPY_TASK_REGS) |
1da177e4 | 99 | return ELF_CORE_COPY_TASK_REGS(t, elfregs); |
e9bf0cc7 | 100 | #elif defined (task_pt_regs) |
a65e7bfc | 101 | elf_core_copy_regs(elfregs, task_pt_regs(t)); |
1da177e4 LT |
102 | #endif |
103 | return 0; | |
104 | } | |
105 | ||
106 | extern int dump_fpu (struct pt_regs *, elf_fpregset_t *); | |
107 | ||
108 | static inline int elf_core_copy_task_fpregs(struct task_struct *t, struct pt_regs *regs, elf_fpregset_t *fpu) | |
109 | { | |
110 | #ifdef ELF_CORE_COPY_FPREGS | |
111 | return ELF_CORE_COPY_FPREGS(t, fpu); | |
112 | #else | |
113 | return dump_fpu(regs, fpu); | |
114 | #endif | |
115 | } | |
116 | ||
b0e90128 | 117 | #if (defined(CONFIG_UML) && defined(CONFIG_X86_32)) || defined(CONFIG_IA64) |
1fcccbac DH |
118 | /* |
119 | * These functions parameterize elf_core_dump in fs/binfmt_elf.c to write out | |
120 | * extra segments containing the gate DSO contents. Dumping its | |
121 | * contents makes post-mortem fully interpretable later without matching up | |
122 | * the same kernel and hardware config to see what PC values meant. | |
123 | * Dumping its extra ELF program headers includes all the other information | |
124 | * a debugger needs to easily find how the gate DSO was being used. | |
125 | */ | |
126 | extern Elf_Half elf_core_extra_phdrs(void); | |
127 | extern int | |
506f21c5 | 128 | elf_core_write_extra_phdrs(struct coredump_params *cprm, loff_t offset); |
1fcccbac | 129 | extern int |
aa3e7eaf | 130 | elf_core_write_extra_data(struct coredump_params *cprm); |
8d9032bb | 131 | extern size_t elf_core_extra_data_size(void); |
6e7b64b9 AB |
132 | #else |
133 | static inline Elf_Half elf_core_extra_phdrs(void) | |
134 | { | |
135 | return 0; | |
136 | } | |
137 | ||
138 | static inline int elf_core_write_extra_phdrs(struct coredump_params *cprm, loff_t offset) | |
139 | { | |
140 | return 1; | |
141 | } | |
142 | ||
143 | static inline int elf_core_write_extra_data(struct coredump_params *cprm) | |
144 | { | |
145 | return 1; | |
146 | } | |
147 | ||
148 | static inline size_t elf_core_extra_data_size(void) | |
149 | { | |
150 | return 0; | |
151 | } | |
152 | #endif | |
1da177e4 LT |
153 | |
154 | #endif /* _LINUX_ELFCORE_H */ |