Release 4.14 arch/mips/kernel/binfmt_elfo32.c

// SPDX-License-Identifier: GPL-2.0
/*
 * Support for o32 Linux/MIPS ELF binaries.
 * Author: Ralf Baechle (ralf@linux-mips.org)
 *
 * 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 int 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 elfo32_check_arch

#ifdef CONFIG_KVM_GUEST

#define TASK32_SIZE		0x3fff8000UL
#else

#define TASK32_SIZE		0x7fff8000UL
#endif

#undef ELF_ET_DYN_BASE

#define ELF_ET_DYN_BASE		(TASK32_SIZE / 3 * 2)

#include <asm/processor.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_elf32_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;
}

Contributors
Person
Tokens
Prop
Commits
CommitProp
Andrew Morton
42
80.77%
1
20.00%
Atsushi Nemoto
6
11.54%
1
20.00%
Roman Zippel
2
3.85%
1
20.00%
Joe Perches
1
1.92%
1
20.00%
Ralf Bächle
1
1.92%
1
20.00%
Total
52
100.00%
5
100.00%


#undef TASK_SIZE

#define TASK_SIZE TASK_SIZE32


#undef ns_to_timeval

#define ns_to_timeval ns_to_compat_timeval

#include "../../../fs/binfmt_elf.c"
Overall Contributors
Person
Tokens
Prop
Commits
CommitProp
Linus Torvalds (pre-git)
203
66.34%
1
6.67%
Andrew Morton
46
15.03%
1
6.67%
Ralf Bächle
27
8.82%
4
26.67%
Sanjay Lal
11
3.59%
1
6.67%
Atsushi Nemoto
6
1.96%
1
6.67%
Roman Zippel
5
1.63%
1
6.67%
Frédéric Weisbecker
3
0.98%
1
6.67%
Linus Torvalds
1
0.33%
1
6.67%
Joe Perches
1
0.33%
1
6.67%
Greg Kroah-Hartman
1
0.33%
1
6.67%
Maciej W. Rozycki
1
0.33%
1
6.67%
Paul Gortmaker
1
0.33%
1
6.67%
Total
306
100.00%
15
100.00%
Directory: arch/mips/kernel

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