Linux Kernel
3.7.1
Main Page
Related Pages
Modules
Namespaces
Data Structures
Files
File List
Globals
All
Data Structures
Namespaces
Files
Functions
Variables
Typedefs
Enumerations
Enumerator
Macros
Groups
Pages
arch
mips
kernel
binfmt_elfn32.c
Go to the documentation of this file.
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 (
[email protected]
)
9
* Copyright (C) 1995, 1996, 1997, 1998 Jakub Jelinek (
[email protected]
)
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
#include <
linux/math64.h
>
58
59
#define elf_prstatus elf_prstatus32
60
struct
elf_prstatus32
61
{
62
struct
elf_siginfo
pr_info
;
/* Info associated with signal */
63
short
pr_cursig
;
/* Current signal */
64
unsigned
int
pr_sigpend
;
/* Set of pending signals */
65
unsigned
int
pr_sighold
;
/* Set of held signals */
66
pid_t
pr_pid
;
67
pid_t
pr_ppid
;
68
pid_t
pr_pgrp
;
69
pid_t
pr_sid
;
70
struct
compat_timeval
pr_utime
;
/* User time */
71
struct
compat_timeval
pr_stime
;
/* System time */
72
struct
compat_timeval
pr_cutime
;
/* Cumulative user time */
73
struct
compat_timeval
pr_cstime
;
/* Cumulative system time */
74
elf_gregset_t
pr_reg
;
/* GP registers */
75
int
pr_fpvalid
;
/* True if math co-processor being used. */
76
};
77
78
#define elf_prpsinfo elf_prpsinfo32
79
struct
elf_prpsinfo32
80
{
81
char
pr_state
;
/* numeric process state */
82
char
pr_sname
;
/* char for pr_state */
83
char
pr_zomb
;
/* zombie */
84
char
pr_nice
;
/* nice val */
85
unsigned
int
pr_flag
;
/* flags */
86
__kernel_uid_t
pr_uid
;
87
__kernel_gid_t
pr_gid
;
88
pid_t
pr_pid
,
pr_ppid
,
pr_pgrp
,
pr_sid
;
89
/* Lots missing */
90
char
pr_fname
[16];
/* filename of executable */
91
char
pr_psargs
[
ELF_PRARGSZ
];
/* initial part of arg list */
92
};
93
94
#define elf_caddr_t u32
95
#define init_elf_binfmt init_elfn32_binfmt
96
97
#define jiffies_to_timeval jiffies_to_compat_timeval
98
static
__inline__
void
99
jiffies_to_compat_timeval(
unsigned
long
jiffies,
struct
compat_timeval
*
value
)
100
{
101
/*
102
* Convert jiffies to nanoseconds and separate with
103
* one divide.
104
*/
105
u64
nsec
= (
u64
)jiffies *
TICK_NSEC
;
106
u32
rem;
107
value->
tv_sec
= div_u64_rem(nsec,
NSEC_PER_SEC
, &rem);
108
value->
tv_usec
= rem /
NSEC_PER_USEC
;
109
}
110
111
#define ELF_CORE_EFLAGS EF_MIPS_ABI2
112
113
MODULE_DESCRIPTION
(
"Binary format loader for compatibility with n32 Linux/MIPS binaries"
);
114
MODULE_AUTHOR
(
"Ralf Baechle (
[email protected]
)"
);
115
116
#undef MODULE_DESCRIPTION
117
#undef MODULE_AUTHOR
118
119
#undef TASK_SIZE
120
#define TASK_SIZE TASK_SIZE32
121
122
#include "../../../fs/binfmt_elf.c"
Generated on Thu Jan 10 2013 13:11:04 for Linux Kernel by
1.8.2