2 * Support for n32 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 long 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 elfn32_check_arch
35 #define TASK32_SIZE 0x7fff8000UL
36 #undef ELF_ET_DYN_BASE
37 #define ELF_ET_DYN_BASE (TASK32_SIZE / 3 * 2)
39 #include <asm/processor.h>
40 #include <linux/module.h>
41 #include <linux/elfcore.h>
42 #include <linux/compat.h>
43 #include <linux/math64.h>
45 #define elf_prstatus elf_prstatus32
48 struct elf_siginfo pr_info
; /* Info associated with signal */
49 short pr_cursig
; /* Current signal */
50 unsigned int pr_sigpend
; /* Set of pending signals */
51 unsigned int pr_sighold
; /* Set of held signals */
56 struct compat_timeval pr_utime
; /* User time */
57 struct compat_timeval pr_stime
; /* System time */
58 struct compat_timeval pr_cutime
;/* Cumulative user time */
59 struct compat_timeval pr_cstime
;/* Cumulative system time */
60 elf_gregset_t pr_reg
; /* GP registers */
61 int pr_fpvalid
; /* True if math co-processor being used. */
64 #define elf_prpsinfo elf_prpsinfo32
67 char pr_state
; /* numeric process state */
68 char pr_sname
; /* char for pr_state */
69 char pr_zomb
; /* zombie */
70 char pr_nice
; /* nice val */
71 unsigned int pr_flag
; /* flags */
72 __kernel_uid_t pr_uid
;
73 __kernel_gid_t pr_gid
;
74 pid_t pr_pid
, pr_ppid
, pr_pgrp
, pr_sid
;
76 char pr_fname
[16]; /* filename of executable */
77 char pr_psargs
[ELF_PRARGSZ
]; /* initial part of arg list */
80 #define elf_caddr_t u32
81 #define init_elf_binfmt init_elfn32_binfmt
83 #define jiffies_to_timeval jiffies_to_compat_timeval
84 static __inline__
void
85 jiffies_to_compat_timeval(unsigned long jiffies
, struct compat_timeval
*value
)
88 * Convert jiffies to nanoseconds and separate with
91 u64 nsec
= (u64
)jiffies
* TICK_NSEC
;
93 value
->tv_sec
= div_u64_rem(nsec
, NSEC_PER_SEC
, &rem
);
94 value
->tv_usec
= rem
/ NSEC_PER_USEC
;
97 #define ELF_CORE_EFLAGS EF_MIPS_ABI2
99 MODULE_DESCRIPTION("Binary format loader for compatibility with n32 Linux/MIPS binaries");
100 MODULE_AUTHOR("Ralf Baechle (ralf@linux-mips.org)");
102 #undef MODULE_DESCRIPTION
106 #define TASK_SIZE TASK_SIZE32
108 #undef cputime_to_timeval
109 #define cputime_to_timeval cputime_to_compat_timeval
110 static __inline__
void
111 cputime_to_compat_timeval(const cputime_t cputime
, struct compat_timeval
*value
)
113 unsigned long jiffies
= cputime_to_jiffies(cputime
);
115 value
->tv_usec
= (jiffies
% HZ
) * (1000000L / HZ
);
116 value
->tv_sec
= jiffies
/ HZ
;
119 #include "../../../fs/binfmt_elf.c"