root/include/asm-x86/ia32.h

INCLUDED FROM

#ifndef ASM_X86__IA32_H
#define ASM_X86__IA32_H


#ifdef CONFIG_IA32_EMULATION

#include <linux/compat.h>

/*
 * 32 bit structures for IA32 support.
 */

#include <asm/sigcontext32.h>

/* signal.h */
struct sigaction32 {
        unsigned int  sa_handler;       /* Really a pointer, but need to deal
                                           with 32 bits */
        unsigned int sa_flags;
        unsigned int sa_restorer;       /* Another 32 bit pointer */
        compat_sigset_t sa_mask;        /* A 32 bit mask */
};

struct old_sigaction32 {
        unsigned int  sa_handler;       /* Really a pointer, but need to deal
                                           with 32 bits */
        compat_old_sigset_t sa_mask;    /* A 32 bit mask */
        unsigned int sa_flags;
        unsigned int sa_restorer;       /* Another 32 bit pointer */
};

typedef struct sigaltstack_ia32 {
        unsigned int    ss_sp;
        int             ss_flags;
        unsigned int    ss_size;
} stack_ia32_t;

struct ucontext_ia32 {
        unsigned int      uc_flags;
        unsigned int      uc_link;
        stack_ia32_t      uc_stack;
        struct sigcontext_ia32 uc_mcontext;
        compat_sigset_t   uc_sigmask;   /* mask last for extensibility */
};

/* This matches struct stat64 in glibc2.2, hence the absolutely
 * insane amounts of padding around dev_t's.
 */
struct stat64 {
        unsigned long long      st_dev;
        unsigned char           __pad0[4];

#define STAT64_HAS_BROKEN_ST_INO        1
        unsigned int            __st_ino;

        unsigned int            st_mode;
        unsigned int            st_nlink;

        unsigned int            st_uid;
        unsigned int            st_gid;

        unsigned long long      st_rdev;
        unsigned char           __pad3[4];

        long long               st_size;
        unsigned int            st_blksize;

        long long               st_blocks;/* Number 512-byte blocks allocated */

        unsigned                st_atime;
        unsigned                st_atime_nsec;
        unsigned                st_mtime;
        unsigned                st_mtime_nsec;
        unsigned                st_ctime;
        unsigned                st_ctime_nsec;

        unsigned long long      st_ino;
} __attribute__((packed));

typedef struct compat_siginfo {
        int si_signo;
        int si_errno;
        int si_code;

        union {
                int _pad[((128 / sizeof(int)) - 3)];

                /* kill() */
                struct {
                        unsigned int _pid;      /* sender's pid */
                        unsigned int _uid;      /* sender's uid */
                } _kill;

                /* POSIX.1b timers */
                struct {
                        compat_timer_t _tid;    /* timer id */
                        int _overrun;           /* overrun count */
                        compat_sigval_t _sigval;        /* same as below */
                        int _sys_private;       /* not to be passed to user */
                        int _overrun_incr;      /* amount to add to overrun */
                } _timer;

                /* POSIX.1b signals */
                struct {
                        unsigned int _pid;      /* sender's pid */
                        unsigned int _uid;      /* sender's uid */
                        compat_sigval_t _sigval;
                } _rt;

                /* SIGCHLD */
                struct {
                        unsigned int _pid;      /* which child */
                        unsigned int _uid;      /* sender's uid */
                        int _status;            /* exit code */
                        compat_clock_t _utime;
                        compat_clock_t _stime;
                } _sigchld;

                /* SIGILL, SIGFPE, SIGSEGV, SIGBUS */
                struct {
                        unsigned int _addr;     /* faulting insn/memory ref. */
                } _sigfault;

                /* SIGPOLL */
                struct {
                        int _band;      /* POLL_IN, POLL_OUT, POLL_MSG */
                        int _fd;
                } _sigpoll;
        } _sifields;
} compat_siginfo_t;

struct sigframe32 {
        u32 pretcode;
        int sig;
        struct sigcontext_ia32 sc;
        struct _fpstate_ia32 fpstate;
        unsigned int extramask[_COMPAT_NSIG_WORDS-1];
};

struct rt_sigframe32 {
        u32 pretcode;
        int sig;
        u32 pinfo;
        u32 puc;
        compat_siginfo_t info;
        struct ucontext_ia32 uc;
        struct _fpstate_ia32 fpstate;
};

struct ustat32 {
        __u32                   f_tfree;
        compat_ino_t            f_tinode;
        char                    f_fname[6];
        char                    f_fpack[6];
};

#define IA32_STACK_TOP IA32_PAGE_OFFSET

#ifdef __KERNEL__
struct linux_binprm;
extern int ia32_setup_arg_pages(struct linux_binprm *bprm,
                                unsigned long stack_top, int exec_stack);
struct mm_struct;
extern void ia32_pick_mmap_layout(struct mm_struct *mm);

#endif

#endif /* !CONFIG_IA32_SUPPORT */

#endif /* ASM_X86__IA32_H */