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(hdr) \
36 struct elfhdr *__h = (hdr); \
38 if (__h->e_machine != EM_MIPS) \
40 if (__h->e_ident[EI_CLASS] != ELFCLASS32) \
42 if ((__h->e_flags & EF_MIPS_ABI2) != 0) \
44 if (((__h->e_flags & EF_MIPS_ABI) != 0) && \
45 ((__h->e_flags & EF_MIPS_ABI) != EF_MIPS_ABI_O32)) \
51 #ifdef CONFIG_KVM_GUEST
52 #define TASK32_SIZE 0x3fff8000UL
54 #define TASK32_SIZE 0x7fff8000UL
56 #undef ELF_ET_DYN_BASE
57 #define ELF_ET_DYN_BASE (TASK32_SIZE / 3 * 2)
59 #include <asm/processor.h>
61 /* These MUST be defined before elf.h gets included */
62 extern void elf32_core_copy_regs(elf_gregset_t grp
, struct pt_regs
*regs
);
63 #define ELF_CORE_COPY_REGS(_dest, _regs) elf32_core_copy_regs(_dest, _regs);
64 #define ELF_CORE_COPY_TASK_REGS(_tsk, _dest) \
67 elf32_core_copy_regs(*(_dest), task_pt_regs(_tsk)); \
71 #include <linux/module.h>
72 #include <linux/elfcore.h>
73 #include <linux/compat.h>
74 #include <linux/math64.h>
76 #define elf_prstatus elf_prstatus32
79 struct elf_siginfo pr_info
; /* Info associated with signal */
80 short pr_cursig
; /* Current signal */
81 unsigned int pr_sigpend
; /* Set of pending signals */
82 unsigned int pr_sighold
; /* Set of held signals */
87 struct compat_timeval pr_utime
; /* User time */
88 struct compat_timeval pr_stime
; /* System time */
89 struct compat_timeval pr_cutime
;/* Cumulative user time */
90 struct compat_timeval pr_cstime
;/* Cumulative system time */
91 elf_gregset_t pr_reg
; /* GP registers */
92 int pr_fpvalid
; /* True if math co-processor being used. */
95 #define elf_prpsinfo elf_prpsinfo32
98 char pr_state
; /* numeric process state */
99 char pr_sname
; /* char for pr_state */
100 char pr_zomb
; /* zombie */
101 char pr_nice
; /* nice val */
102 unsigned int pr_flag
; /* flags */
103 __kernel_uid_t pr_uid
;
104 __kernel_gid_t pr_gid
;
105 pid_t pr_pid
, pr_ppid
, pr_pgrp
, pr_sid
;
107 char pr_fname
[16]; /* filename of executable */
108 char pr_psargs
[ELF_PRARGSZ
]; /* initial part of arg list */
111 #define elf_caddr_t u32
112 #define init_elf_binfmt init_elf32_binfmt
114 #define jiffies_to_timeval jiffies_to_compat_timeval
116 jiffies_to_compat_timeval(unsigned long jiffies
, struct compat_timeval
*value
)
119 * Convert jiffies to nanoseconds and separate with
122 u64 nsec
= (u64
)jiffies
* TICK_NSEC
;
124 value
->tv_sec
= div_u64_rem(nsec
, NSEC_PER_SEC
, &rem
);
125 value
->tv_usec
= rem
/ NSEC_PER_USEC
;
128 void elf32_core_copy_regs(elf_gregset_t grp
, struct pt_regs
*regs
)
132 for (i
= 0; i
< MIPS32_EF_R0
; i
++)
134 grp
[MIPS32_EF_R0
] = 0;
135 for (i
= 1; i
<= 31; i
++)
136 grp
[MIPS32_EF_R0
+ i
] = (elf_greg_t
) regs
->regs
[i
];
137 grp
[MIPS32_EF_R26
] = 0;
138 grp
[MIPS32_EF_R27
] = 0;
139 grp
[MIPS32_EF_LO
] = (elf_greg_t
) regs
->lo
;
140 grp
[MIPS32_EF_HI
] = (elf_greg_t
) regs
->hi
;
141 grp
[MIPS32_EF_CP0_EPC
] = (elf_greg_t
) regs
->cp0_epc
;
142 grp
[MIPS32_EF_CP0_BADVADDR
] = (elf_greg_t
) regs
->cp0_badvaddr
;
143 grp
[MIPS32_EF_CP0_STATUS
] = (elf_greg_t
) regs
->cp0_status
;
144 grp
[MIPS32_EF_CP0_CAUSE
] = (elf_greg_t
) regs
->cp0_cause
;
145 #ifdef MIPS32_EF_UNUSED0
146 grp
[MIPS32_EF_UNUSED0
] = 0;
150 MODULE_DESCRIPTION("Binary format loader for compatibility with o32 Linux/MIPS binaries");
151 MODULE_AUTHOR("Ralf Baechle (ralf@linux-mips.org)");
153 #undef MODULE_DESCRIPTION
157 #define TASK_SIZE TASK_SIZE32
159 #undef cputime_to_timeval
160 #define cputime_to_timeval cputime_to_compat_timeval
161 static __inline__
void
162 cputime_to_compat_timeval(const cputime_t cputime
, struct compat_timeval
*value
)
164 unsigned long jiffies
= cputime_to_jiffies(cputime
);
166 value
->tv_usec
= (jiffies
% HZ
) * (1000000L / HZ
);
167 value
->tv_sec
= jiffies
/ HZ
;
170 #include "../../../fs/binfmt_elf.c"