[PATCH] elf: Always define elf_addr_t in linux/elf.h
[linux-2.6.git] / arch / mips / kernel / binfmt_elfn32.c
1 /*
2  * Support for n32 Linux/MIPS ELF binaries.
3  *
4  * Copyright (C) 1999, 2001 Ralf Baechle
5  * Copyright (C) 1999, 2001 Silicon Graphics, Inc.
6  *
7  * Heavily inspired by the 32-bit Sparc compat code which is
8  * Copyright (C) 1995, 1996, 1997, 1998 David S. Miller (davem@redhat.com)
9  * Copyright (C) 1995, 1996, 1997, 1998 Jakub Jelinek   (jj@ultra.linux.cz)
10  */
11
12 #define ELF_ARCH                EM_MIPS
13 #define ELF_CLASS               ELFCLASS32
14 #ifdef __MIPSEB__
15 #define ELF_DATA                ELFDATA2MSB;
16 #else /* __MIPSEL__ */
17 #define ELF_DATA                ELFDATA2LSB;
18 #endif
19
20 /* ELF register definitions */
21 #define ELF_NGREG       45
22 #define ELF_NFPREG      33
23
24 typedef unsigned long elf_greg_t;
25 typedef elf_greg_t elf_gregset_t[ELF_NGREG];
26
27 typedef double elf_fpreg_t;
28 typedef elf_fpreg_t elf_fpregset_t[ELF_NFPREG];
29
30 /*
31  * This is used to ensure we don't load something for the wrong architecture.
32  */
33 #define elf_check_arch(hdr)                                             \
34 ({                                                                      \
35         int __res = 1;                                                  \
36         struct elfhdr *__h = (hdr);                                     \
37                                                                         \
38         if (__h->e_machine != EM_MIPS)                                  \
39                 __res = 0;                                              \
40         if (__h->e_ident[EI_CLASS] != ELFCLASS32)                       \
41                 __res = 0;                                              \
42         if (((__h->e_flags & EF_MIPS_ABI2) == 0) ||                     \
43             ((__h->e_flags & EF_MIPS_ABI) != 0))                        \
44                 __res = 0;                                              \
45                                                                         \
46         __res;                                                          \
47 })
48
49 #define TASK32_SIZE             0x7fff8000UL
50 #undef ELF_ET_DYN_BASE
51 #define ELF_ET_DYN_BASE         (TASK32_SIZE / 3 * 2)
52
53 #include <asm/processor.h>
54 #include <linux/module.h>
55 #include <linux/elfcore.h>
56 #include <linux/compat.h>
57
58 #define elf_prstatus elf_prstatus32
59 struct elf_prstatus32
60 {
61         struct elf_siginfo pr_info;     /* Info associated with signal */
62         short   pr_cursig;              /* Current signal */
63         unsigned int pr_sigpend;        /* Set of pending signals */
64         unsigned int pr_sighold;        /* Set of held signals */
65         pid_t   pr_pid;
66         pid_t   pr_ppid;
67         pid_t   pr_pgrp;
68         pid_t   pr_sid;
69         struct compat_timeval pr_utime; /* User time */
70         struct compat_timeval pr_stime; /* System time */
71         struct compat_timeval pr_cutime;/* Cumulative user time */
72         struct compat_timeval pr_cstime;/* Cumulative system time */
73         elf_gregset_t pr_reg;   /* GP registers */
74         int pr_fpvalid;         /* True if math co-processor being used.  */
75 };
76
77 #define elf_prpsinfo elf_prpsinfo32
78 struct elf_prpsinfo32
79 {
80         char    pr_state;       /* numeric process state */
81         char    pr_sname;       /* char for pr_state */
82         char    pr_zomb;        /* zombie */
83         char    pr_nice;        /* nice val */
84         unsigned int pr_flag;   /* flags */
85         __kernel_uid_t  pr_uid;
86         __kernel_gid_t  pr_gid;
87         pid_t   pr_pid, pr_ppid, pr_pgrp, pr_sid;
88         /* Lots missing */
89         char    pr_fname[16];   /* filename of executable */
90         char    pr_psargs[ELF_PRARGSZ]; /* initial part of arg list */
91 };
92
93 #define elf_caddr_t     u32
94 #define init_elf_binfmt init_elfn32_binfmt
95
96 #define jiffies_to_timeval jiffies_to_compat_timeval
97 static __inline__ void
98 jiffies_to_compat_timeval(unsigned long jiffies, struct compat_timeval *value)
99 {
100         /*
101          * Convert jiffies to nanoseconds and seperate with
102          * one divide.
103          */
104         u64 nsec = (u64)jiffies * TICK_NSEC;
105         long rem;
106         value->tv_sec = div_long_long_rem(nsec, NSEC_PER_SEC, &rem);
107         value->tv_usec = rem / NSEC_PER_USEC;
108 }
109
110 #define ELF_CORE_EFLAGS EF_MIPS_ABI2
111
112 MODULE_DESCRIPTION("Binary format loader for compatibility with n32 Linux/MIPS binaries");
113 MODULE_AUTHOR("Ralf Baechle (ralf@linux-mips.org)");
114
115 #undef MODULE_DESCRIPTION
116 #undef MODULE_AUTHOR
117
118 #undef TASK_SIZE
119 #define TASK_SIZE TASK_SIZE32
120
121 #include "../../../fs/binfmt_elf.c"