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/*
* 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(hdr) \
( { \
int __res = 1 ; \
struct elfhdr * __h = ( hdr ) ; \
\
if ( __h - > e_machine ! = EM_MIPS ) \
__res = 0 ; \
if ( __h - > e_ident [ EI_CLASS ] ! = ELFCLASS32 ) \
__res = 0 ; \
if ( ( ( __h - > e_flags & EF_MIPS_ABI2 ) = = 0 ) | | \
( ( __h - > e_flags & EF_MIPS_ABI ) ! = 0 ) ) \
__res = 0 ; \
\
__res ; \
} )
# 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>
# 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 seperate with
* one divide .
*/
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u64 nsec = ( u64 ) jiffies * TICK_NSEC ;
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long rem ;
value - > tv_sec = div_long_long_rem ( nsec , NSEC_PER_SEC , & rem ) ;
value - > tv_usec = rem / NSEC_PER_USEC ;
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}
# 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
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# undef TASK_SIZE
# define TASK_SIZE TASK_SIZE32
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# include "../../../fs/binfmt_elf.c"