1/*
2 * IA-32 ELF core dump support.
3 *
4 * Copyright (C) 2003 Arun Sharma <arun.sharma@intel.com>
5 *
6 * Derived from the x86_64 version
7 */
8#ifndef _ELFCORE32_H_
9#define _ELFCORE32_H_
10
11#include <asm/intrinsics.h>
12#include <asm/uaccess.h>
13
14#define USE_ELF_CORE_DUMP 1
15
16/* Override elfcore.h */
17#define _LINUX_ELFCORE_H 1
18typedef unsigned int elf_greg_t;
19
20#define ELF_NGREG (sizeof (struct user_regs_struct32) / sizeof(elf_greg_t))
21typedef elf_greg_t elf_gregset_t[ELF_NGREG];
22
23typedef struct ia32_user_i387_struct elf_fpregset_t;
24typedef struct ia32_user_fxsr_struct elf_fpxregset_t;
25
26struct elf_siginfo
27{
28	int	si_signo;			/* signal number */
29	int	si_code;			/* extra code */
30	int	si_errno;			/* errno */
31};
32
33#define jiffies_to_timeval(a,b) do { (b)->tv_usec = 0; (b)->tv_sec = (a)/HZ; }while(0)
34
35struct elf_prstatus
36{
37	struct elf_siginfo pr_info;	/* Info associated with signal */
38	short	pr_cursig;		/* Current signal */
39	unsigned int pr_sigpend;	/* Set of pending signals */
40	unsigned int pr_sighold;	/* Set of held signals */
41	pid_t	pr_pid;
42	pid_t	pr_ppid;
43	pid_t	pr_pgrp;
44	pid_t	pr_sid;
45	struct compat_timeval pr_utime;	/* User time */
46	struct compat_timeval pr_stime;	/* System time */
47	struct compat_timeval pr_cutime;	/* Cumulative user time */
48	struct compat_timeval pr_cstime;	/* Cumulative system time */
49	elf_gregset_t pr_reg;	/* GP registers */
50	int pr_fpvalid;		/* True if math co-processor being used.  */
51};
52
53#define ELF_PRARGSZ	(80)	/* Number of chars for args */
54
55struct elf_prpsinfo
56{
57	char	pr_state;	/* numeric process state */
58	char	pr_sname;	/* char for pr_state */
59	char	pr_zomb;	/* zombie */
60	char	pr_nice;	/* nice val */
61	unsigned int pr_flag;	/* flags */
62	__u16	pr_uid;
63	__u16	pr_gid;
64	pid_t	pr_pid, pr_ppid, pr_pgrp, pr_sid;
65	/* Lots missing */
66	char	pr_fname[16];	/* filename of executable */
67	char	pr_psargs[ELF_PRARGSZ];	/* initial part of arg list */
68};
69
70#define ELF_CORE_COPY_REGS(pr_reg, regs)       		\
71	pr_reg[0] = regs->r11;				\
72	pr_reg[1] = regs->r9;				\
73	pr_reg[2] = regs->r10;				\
74	pr_reg[3] = regs->r14;				\
75	pr_reg[4] = regs->r15;				\
76	pr_reg[5] = regs->r13;				\
77	pr_reg[6] = regs->r8;				\
78	pr_reg[7] = regs->r16 & 0xffff;			\
79	pr_reg[8] = (regs->r16 >> 16) & 0xffff;		\
80	pr_reg[9] = (regs->r16 >> 32) & 0xffff;		\
81	pr_reg[10] = (regs->r16 >> 48) & 0xffff;	\
82	pr_reg[11] = regs->r1; 				\
83	pr_reg[12] = regs->cr_iip;			\
84	pr_reg[13] = regs->r17 & 0xffff;		\
85	pr_reg[14] = ia64_getreg(_IA64_REG_AR_EFLAG);	\
86	pr_reg[15] = regs->r12;				\
87	pr_reg[16] = (regs->r17 >> 16) & 0xffff;
88
89static inline void elf_core_copy_regs(elf_gregset_t *elfregs,
90				      struct pt_regs *regs)
91{
92	ELF_CORE_COPY_REGS((*elfregs), regs)
93}
94
95static inline int elf_core_copy_task_regs(struct task_struct *t,
96					  elf_gregset_t* elfregs)
97{
98	ELF_CORE_COPY_REGS((*elfregs), task_pt_regs(t));
99	return 1;
100}
101
102static inline int
103elf_core_copy_task_fpregs(struct task_struct *tsk, struct pt_regs *regs, elf_fpregset_t *fpu)
104{
105	struct ia32_user_i387_struct *fpstate = (void*)fpu;
106	mm_segment_t old_fs;
107
108	if (!tsk_used_math(tsk))
109		return 0;
110
111	old_fs = get_fs();
112	set_fs(KERNEL_DS);
113	save_ia32_fpstate(tsk, (struct ia32_user_i387_struct __user *) fpstate);
114	set_fs(old_fs);
115
116	return 1;
117}
118
119#define ELF_CORE_COPY_XFPREGS 1
120static inline int
121elf_core_copy_task_xfpregs(struct task_struct *tsk, elf_fpxregset_t *xfpu)
122{
123	struct ia32_user_fxsr_struct *fpxstate = (void*) xfpu;
124	mm_segment_t old_fs;
125
126	if (!tsk_used_math(tsk))
127		return 0;
128
129	old_fs = get_fs();
130	set_fs(KERNEL_DS);
131	save_ia32_fpxstate(tsk, (struct ia32_user_fxsr_struct __user *) fpxstate);
132	set_fs(old_fs);
133
134	return 1;
135}
136
137#endif /* _ELFCORE32_H_ */
138