2 * Support for o32 Linux/MIPS ELF binaries.
4 * Copyright (C) 1999, 2001 Ralf Baechle
5 * Copyright (C) 1999, 2001 Silicon Graphics, Inc.
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)
12 #define ELF_ARCH EM_MIPS
13 #define ELF_CLASS ELFCLASS32
15 #define ELF_DATA ELFDATA2MSB;
16 #else /* __MIPSEL__ */
17 #define ELF_DATA ELFDATA2LSB;
20 /* ELF register definitions */
24 typedef unsigned int elf_greg_t
;
25 typedef elf_greg_t elf_gregset_t
[ELF_NGREG
];
27 typedef double elf_fpreg_t
;
28 typedef elf_fpreg_t elf_fpregset_t
[ELF_NFPREG
];
31 * This is used to ensure we don't load something for the wrong architecture.
33 #define elf_check_arch elfo32_check_arch
35 #ifdef CONFIG_KVM_GUEST
36 #define TASK32_SIZE 0x3fff8000UL
38 #define TASK32_SIZE 0x7fff8000UL
40 #undef ELF_ET_DYN_BASE
41 #define ELF_ET_DYN_BASE (TASK32_SIZE / 3 * 2)
43 #include <asm/processor.h>
45 #include <linux/module.h>
46 #include <linux/elfcore.h>
47 #include <linux/compat.h>
48 #include <linux/math64.h>
50 #define elf_prstatus elf_prstatus32
53 struct elf_siginfo pr_info
; /* Info associated with signal */
54 short pr_cursig
; /* Current signal */
55 unsigned int pr_sigpend
; /* Set of pending signals */
56 unsigned int pr_sighold
; /* Set of held signals */
61 struct compat_timeval pr_utime
; /* User time */
62 struct compat_timeval pr_stime
; /* System time */
63 struct compat_timeval pr_cutime
;/* Cumulative user time */
64 struct compat_timeval pr_cstime
;/* Cumulative system time */
65 elf_gregset_t pr_reg
; /* GP registers */
66 int pr_fpvalid
; /* True if math co-processor being used. */
69 #define elf_prpsinfo elf_prpsinfo32
72 char pr_state
; /* numeric process state */
73 char pr_sname
; /* char for pr_state */
74 char pr_zomb
; /* zombie */
75 char pr_nice
; /* nice val */
76 unsigned int pr_flag
; /* flags */
77 __kernel_uid_t pr_uid
;
78 __kernel_gid_t pr_gid
;
79 pid_t pr_pid
, pr_ppid
, pr_pgrp
, pr_sid
;
81 char pr_fname
[16]; /* filename of executable */
82 char pr_psargs
[ELF_PRARGSZ
]; /* initial part of arg list */
85 #define elf_caddr_t u32
86 #define init_elf_binfmt init_elf32_binfmt
88 #define jiffies_to_timeval jiffies_to_compat_timeval
90 jiffies_to_compat_timeval(unsigned long jiffies
, struct compat_timeval
*value
)
93 * Convert jiffies to nanoseconds and separate with
96 u64 nsec
= (u64
)jiffies
* TICK_NSEC
;
98 value
->tv_sec
= div_u64_rem(nsec
, NSEC_PER_SEC
, &rem
);
99 value
->tv_usec
= rem
/ NSEC_PER_USEC
;
102 MODULE_DESCRIPTION("Binary format loader for compatibility with o32 Linux/MIPS binaries");
103 MODULE_AUTHOR("Ralf Baechle (ralf@linux-mips.org)");
105 #undef MODULE_DESCRIPTION
109 #define TASK_SIZE TASK_SIZE32
111 #undef cputime_to_timeval
112 #define cputime_to_timeval cputime_to_compat_timeval
113 static __inline__
void
114 cputime_to_compat_timeval(const cputime_t cputime
, struct compat_timeval
*value
)
116 unsigned long jiffies
= cputime_to_jiffies(cputime
);
118 value
->tv_usec
= (jiffies
% HZ
) * (1000000L / HZ
);
119 value
->tv_sec
= jiffies
/ HZ
;
122 #include "../../../fs/binfmt_elf.c"