[linux-2.6-block.git] / arch / mips / kernel / binfmt_elfn32.c

/*
 * Support for n32 Linux/MIPS ELF binaries.
 *
 * Copyright (C) 1999, 2001 Ralf Baechle
 * Copyright (C) 1999, 2001 Silicon Graphics, Inc.
 *
 * Heavily inspired by the 32-bit Sparc compat code which is
 * Copyright (C) 1995, 1996, 1997, 1998 David S. Miller (davem@redhat.com)
 * Copyright (C) 1995, 1996, 1997, 1998 Jakub Jelinek	(jj@ultra.linux.cz)
 */

#define ELF_ARCH		EM_MIPS
#define ELF_CLASS		ELFCLASS32
#ifdef __MIPSEB__
#define ELF_DATA		ELFDATA2MSB;
#else /* __MIPSEL__ */
#define ELF_DATA		ELFDATA2LSB;
#endif

/* ELF register definitions */
#define ELF_NGREG	45
#define ELF_NFPREG	33

typedef unsigned long elf_greg_t;
typedef elf_greg_t elf_gregset_t[ELF_NGREG];

typedef double elf_fpreg_t;
typedef elf_fpreg_t elf_fpregset_t[ELF_NFPREG];

/*
 * This is used to ensure we don't load something for the wrong architecture.
 */
#define elf_check_arch elfn32_check_arch

#define TASK32_SIZE		0x7fff8000UL
#undef ELF_ET_DYN_BASE
#define ELF_ET_DYN_BASE		(TASK32_SIZE / 3 * 2)

#include <asm/processor.h>
#include <linux/module.h>
#include <linux/elfcore.h>
#include <linux/compat.h>
#include <linux/math64.h>

#define elf_prstatus elf_prstatus32
struct elf_prstatus32
{
	struct elf_siginfo pr_info;	/* Info associated with signal */
	short	pr_cursig;		/* Current signal */
	unsigned int pr_sigpend;	/* Set of pending signals */
	unsigned int pr_sighold;	/* Set of held signals */
	pid_t	pr_pid;
	pid_t	pr_ppid;
	pid_t	pr_pgrp;
	pid_t	pr_sid;
	struct compat_timeval pr_utime; /* User time */
	struct compat_timeval pr_stime; /* System time */
	struct compat_timeval pr_cutime;/* Cumulative user time */
	struct compat_timeval pr_cstime;/* Cumulative system time */
	elf_gregset_t pr_reg;	/* GP registers */
	int pr_fpvalid;		/* True if math co-processor being used.  */
};

#define elf_prpsinfo elf_prpsinfo32
struct elf_prpsinfo32
{
	char	pr_state;	/* numeric process state */
	char	pr_sname;	/* char for pr_state */
	char	pr_zomb;	/* zombie */
	char	pr_nice;	/* nice val */
	unsigned int pr_flag;	/* flags */
	__kernel_uid_t	pr_uid;
	__kernel_gid_t	pr_gid;
	pid_t	pr_pid, pr_ppid, pr_pgrp, pr_sid;
	/* Lots missing */
	char	pr_fname[16];	/* filename of executable */
	char	pr_psargs[ELF_PRARGSZ]; /* initial part of arg list */
};

#define elf_caddr_t	u32
#define init_elf_binfmt init_elfn32_binfmt

#define jiffies_to_timeval jiffies_to_compat_timeval
static __inline__ void
jiffies_to_compat_timeval(unsigned long jiffies, struct compat_timeval *value)
{
	/*
	 * Convert jiffies to nanoseconds and separate with
	 * one divide.
	 */
	u64 nsec = (u64)jiffies * TICK_NSEC;
	u32 rem;
	value->tv_sec = div_u64_rem(nsec, NSEC_PER_SEC, &rem);
	value->tv_usec = rem / NSEC_PER_USEC;
}

#define ELF_CORE_EFLAGS EF_MIPS_ABI2

MODULE_DESCRIPTION("Binary format loader for compatibility with n32 Linux/MIPS binaries");
MODULE_AUTHOR("Ralf Baechle (ralf@linux-mips.org)");

#undef MODULE_DESCRIPTION
#undef MODULE_AUTHOR

#undef TASK_SIZE
#define TASK_SIZE TASK_SIZE32

#undef cputime_to_timeval
#define cputime_to_timeval cputime_to_compat_timeval
static __inline__ void
cputime_to_compat_timeval(const cputime_t cputime, struct compat_timeval *value)
{
	unsigned long jiffies = cputime_to_jiffies(cputime);

	value->tv_usec = (jiffies % HZ) * (1000000L / HZ);
	value->tv_sec = jiffies / HZ;
}

#include "../../../fs/binfmt_elf.c"
Commit	Line	Data
1da177e4 LT	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)
70342287	9	* Copyright (C) 1995, 1996, 1997, 1998 Jakub Jelinek (jj@ultra.linux.cz)
1da177e4 LT	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	*/
c9babb19	33	#define elf_check_arch elfn32_check_arch
1da177e4 LT	34
	35	#define TASK32_SIZE 0x7fff8000UL
	36	#undef ELF_ET_DYN_BASE
70342287	37	#define ELF_ET_DYN_BASE (TASK32_SIZE / 3 * 2)
1da177e4 LT	38
	39	#include <asm/processor.h>
	40	#include <linux/module.h>
1da177e4 LT	41	#include <linux/elfcore.h>
1da177e4 LT	42	#include <linux/compat.h>
f8bd2258	43	#include <linux/math64.h>
1da177e4 LT	44
	45	#define elf_prstatus elf_prstatus32
	46	struct elf_prstatus32
	47	{
	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 */
	52	pid_t pr_pid;
	53	pid_t pr_ppid;
	54	pid_t pr_pgrp;
	55	pid_t pr_sid;
70342287 RB	56	struct compat_timeval pr_utime; /* User time */
70342287 RB	57	struct compat_timeval pr_stime; /* System time */
1da177e4 LT	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. */
	62	};
	63
	64	#define elf_prpsinfo elf_prpsinfo32
	65	struct elf_prpsinfo32
	66	{
	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;
	75	/* Lots missing */
	76	char pr_fname[16]; /* filename of executable */
70342287	77	char pr_psargs[ELF_PRARGSZ]; /* initial part of arg list */
1da177e4 LT	78	};
1da177e4 LT	79
1da177e4 LT	80	#define elf_caddr_t u32
	81	#define init_elf_binfmt init_elfn32_binfmt
	82
	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)
	86	{
	87	/*
603e82ed	88	* Convert jiffies to nanoseconds and separate with
1da177e4 LT	89	* one divide.
1da177e4 LT	90	*/
42a3b4f2	91	u64 nsec = (u64)jiffies * TICK_NSEC;
f8bd2258 RZ	92	u32 rem;
f8bd2258 RZ	93	value->tv_sec = div_u64_rem(nsec, NSEC_PER_SEC, &rem);
909fa64c	94	value->tv_usec = rem / NSEC_PER_USEC;
1da177e4 LT	95	}
	96
	97	#define ELF_CORE_EFLAGS EF_MIPS_ABI2
	98
	99	MODULE_DESCRIPTION("Binary format loader for compatibility with n32 Linux/MIPS binaries");
	100	MODULE_AUTHOR("Ralf Baechle (ralf@linux-mips.org)");
	101
	102	#undef MODULE_DESCRIPTION
	103	#undef MODULE_AUTHOR
	104
c6237645 RB	105	#undef TASK_SIZE
	106	#define TASK_SIZE TASK_SIZE32
	107
7b741aa4 RB	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)
	112	{
	113	unsigned long jiffies = cputime_to_jiffies(cputime);
	114
	115	value->tv_usec = (jiffies % HZ) * (1000000L / HZ);
	116	value->tv_sec = jiffies / HZ;
	117	}
	118
1da177e4	119	#include "../../../fs/binfmt_elf.c"