/include/linux/elfcore.h

  1#ifndef _LINUX_ELFCORE_H
  2#define _LINUX_ELFCORE_H
  3
  4#include <linux/types.h>
  5#include <linux/signal.h>
  6#include <linux/time.h>
  7#ifdef __KERNEL__
  8#include <linux/user.h>
  9#endif
 10#include <linux/ptrace.h>
 11#include <linux/elf.h>
 12#include <linux/fs.h>
 13
 14struct elf_siginfo
 15{
 16	int	si_signo;			/* signal number */
 17	int	si_code;			/* extra code */
 18	int	si_errno;			/* errno */
 19};
 20
 21#ifdef __KERNEL__
 22#include <asm/elf.h>
 23#endif
 24
 25#ifndef __KERNEL__
 26typedef elf_greg_t greg_t;
 27typedef elf_gregset_t gregset_t;
 28typedef elf_fpregset_t fpregset_t;
 29typedef elf_fpxregset_t fpxregset_t;
 30#define NGREG ELF_NGREG
 31#endif
 32
 33/*
 34 * Definitions to generate Intel SVR4-like core files.
 35 * These mostly have the same names as the SVR4 types with "elf_"
 36 * tacked on the front to prevent clashes with linux definitions,
 37 * and the typedef forms have been avoided.  This is mostly like
 38 * the SVR4 structure, but more Linuxy, with things that Linux does
 39 * not support and which gdb doesn't really use excluded.
 40 * Fields present but not used are marked with "XXX".
 41 */
 42struct elf_prstatus
 43{
 44#if 0
 45	long	pr_flags;	/* XXX Process flags */
 46	short	pr_why;		/* XXX Reason for process halt */
 47	short	pr_what;	/* XXX More detailed reason */
 48#endif
 49	struct elf_siginfo pr_info;	/* Info associated with signal */
 50	short	pr_cursig;		/* Current signal */
 51	unsigned long pr_sigpend;	/* Set of pending signals */
 52	unsigned long pr_sighold;	/* Set of held signals */
 53#if 0
 54	struct sigaltstack pr_altstack;	/* Alternate stack info */
 55	struct sigaction pr_action;	/* Signal action for current sig */
 56#endif
 57	pid_t	pr_pid;
 58	pid_t	pr_ppid;
 59	pid_t	pr_pgrp;
 60	pid_t	pr_sid;
 61	struct timeval pr_utime;	/* User time */
 62	struct timeval pr_stime;	/* System time */
 63	struct timeval pr_cutime;	/* Cumulative user time */
 64	struct timeval pr_cstime;	/* Cumulative system time */
 65#if 0
 66	long	pr_instr;		/* Current instruction */
 67#endif
 68	elf_gregset_t pr_reg;	/* GP registers */
 69#ifdef CONFIG_BINFMT_ELF_FDPIC
 70	/* When using FDPIC, the loadmap addresses need to be communicated
 71	 * to GDB in order for GDB to do the necessary relocations.  The
 72	 * fields (below) used to communicate this information are placed
 73	 * immediately after ``pr_reg'', so that the loadmap addresses may
 74	 * be viewed as part of the register set if so desired.
 75	 */
 76	unsigned long pr_exec_fdpic_loadmap;
 77	unsigned long pr_interp_fdpic_loadmap;
 78#endif
 79	int pr_fpvalid;		/* True if math co-processor being used.  */
 80};
 81
 82#define ELF_PRARGSZ	(80)	/* Number of chars for args */
 83
 84struct elf_prpsinfo
 85{
 86	char	pr_state;	/* numeric process state */
 87	char	pr_sname;	/* char for pr_state */
 88	char	pr_zomb;	/* zombie */
 89	char	pr_nice;	/* nice val */
 90	unsigned long pr_flag;	/* flags */
 91	__kernel_uid_t	pr_uid;
 92	__kernel_gid_t	pr_gid;
 93	pid_t	pr_pid, pr_ppid, pr_pgrp, pr_sid;
 94	/* Lots missing */
 95	char	pr_fname[16];	/* filename of executable */
 96	char	pr_psargs[ELF_PRARGSZ];	/* initial part of arg list */
 97};
 98
 99#ifndef __KERNEL__
100typedef struct elf_prstatus prstatus_t;
101typedef struct elf_prpsinfo prpsinfo_t;
102#define PRARGSZ ELF_PRARGSZ 
103#endif
104
105#ifdef __KERNEL__
106static inline void elf_core_copy_regs(elf_gregset_t *elfregs, struct pt_regs *regs)
107{
108#ifdef ELF_CORE_COPY_REGS
109	ELF_CORE_COPY_REGS((*elfregs), regs)
110#else
111	BUG_ON(sizeof(*elfregs) != sizeof(*regs));
112	*(struct pt_regs *)elfregs = *regs;
113#endif
114}
115
116static inline void elf_core_copy_kernel_regs(elf_gregset_t *elfregs, struct pt_regs *regs)
117{
118#ifdef ELF_CORE_COPY_KERNEL_REGS
119	ELF_CORE_COPY_KERNEL_REGS((*elfregs), regs);
120#else
121	elf_core_copy_regs(elfregs, regs);
122#endif
123}
124
125static inline int elf_core_copy_task_regs(struct task_struct *t, elf_gregset_t* elfregs)
126{
127#if defined (ELF_CORE_COPY_TASK_REGS)
128	return ELF_CORE_COPY_TASK_REGS(t, elfregs);
129#elif defined (task_pt_regs)
130	elf_core_copy_regs(elfregs, task_pt_regs(t));
131#endif
132	return 0;
133}
134
135extern int dump_fpu (struct pt_regs *, elf_fpregset_t *);
136
137static inline int elf_core_copy_task_fpregs(struct task_struct *t, struct pt_regs *regs, elf_fpregset_t *fpu)
138{
139#ifdef ELF_CORE_COPY_FPREGS
140	return ELF_CORE_COPY_FPREGS(t, fpu);
141#else
142	return dump_fpu(regs, fpu);
143#endif
144}
145
146#ifdef ELF_CORE_COPY_XFPREGS
147static inline int elf_core_copy_task_xfpregs(struct task_struct *t, elf_fpxregset_t *xfpu)
148{
149	return ELF_CORE_COPY_XFPREGS(t, xfpu);
150}
151#endif
152
153/*
154 * These functions parameterize elf_core_dump in fs/binfmt_elf.c to write out
155 * extra segments containing the gate DSO contents.  Dumping its
156 * contents makes post-mortem fully interpretable later without matching up
157 * the same kernel and hardware config to see what PC values meant.
158 * Dumping its extra ELF program headers includes all the other information
159 * a debugger needs to easily find how the gate DSO was being used.
160 */
161extern Elf_Half elf_core_extra_phdrs(void);
162extern int
163elf_core_write_extra_phdrs(struct file *file, loff_t offset, size_t *size,
164			   unsigned long limit);
165extern int
166elf_core_write_extra_data(struct file *file, size_t *size, unsigned long limit);
167extern size_t elf_core_extra_data_size(void);
168
169#endif /* __KERNEL__ */
170
171#endif /* _LINUX_ELFCORE_H */