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   1 #ifndef ASM_X86__IA32_H
   2 #define ASM_X86__IA32_H
   3
   4
   5 #ifdef CONFIG_IA32_EMULATION
   6
   7 #include <linux/compat.h>
   8
   9 /*
  10  * 32 bit structures for IA32 support.
  11  */
  12
  13 #include <asm/sigcontext32.h>
  14
  15 /* signal.h */
  16 struct sigaction32 {
  17         unsigned int  sa_handler;       /* Really a pointer, but need to deal
  18                                            with 32 bits */
  19         unsigned int sa_flags;
  20         unsigned int sa_restorer;       /* Another 32 bit pointer */
  21         compat_sigset_t sa_mask;        /* A 32 bit mask */
  22 };
  23
  24 struct old_sigaction32 {
  25         unsigned int  sa_handler;       /* Really a pointer, but need to deal
  26                                            with 32 bits */
  27         compat_old_sigset_t sa_mask;    /* A 32 bit mask */
  28         unsigned int sa_flags;
  29         unsigned int sa_restorer;       /* Another 32 bit pointer */
  30 };
  31
  32 typedef struct sigaltstack_ia32 {
  33         unsigned int    ss_sp;
  34         int             ss_flags;
  35         unsigned int    ss_size;
  36 } stack_ia32_t;
  37
  38 struct ucontext_ia32 {
  39         unsigned int      uc_flags;
  40         unsigned int      uc_link;
  41         stack_ia32_t      uc_stack;
  42         struct sigcontext_ia32 uc_mcontext;
  43         compat_sigset_t   uc_sigmask;   /* mask last for extensibility */
  44 };
  45
  46 /* This matches struct stat64 in glibc2.2, hence the absolutely
  47  * insane amounts of padding around dev_t's.
  48  */
  49 struct stat64 {
  50         unsigned long long      st_dev;
  51         unsigned char           __pad0[4];
  52
  53 #define STAT64_HAS_BROKEN_ST_INO        1
  54         unsigned int            __st_ino;
  55
  56         unsigned int            st_mode;
  57         unsigned int            st_nlink;
  58
  59         unsigned int            st_uid;
  60         unsigned int            st_gid;
  61
  62         unsigned long long      st_rdev;
  63         unsigned char           __pad3[4];
  64
  65         long long               st_size;
  66         unsigned int            st_blksize;
  67
  68         long long               st_blocks;/* Number 512-byte blocks allocated */
  69
  70         unsigned                st_atime;
  71         unsigned                st_atime_nsec;
  72         unsigned                st_mtime;
  73         unsigned                st_mtime_nsec;
  74         unsigned                st_ctime;
  75         unsigned                st_ctime_nsec;
  76
  77         unsigned long long      st_ino;
  78 } __attribute__((packed));
  79
  80 typedef struct compat_siginfo {
  81         int si_signo;
  82         int si_errno;
  83         int si_code;
  84
  85         union {
  86                 int _pad[((128 / sizeof(int)) - 3)];
  87
  88                 /* kill() */
  89                 struct {
  90                         unsigned int _pid;      /* sender's pid */
  91                         unsigned int _uid;      /* sender's uid */
  92                 } _kill;
  93
  94                 /* POSIX.1b timers */
  95                 struct {
  96                         compat_timer_t _tid;    /* timer id */
  97                         int _overrun;           /* overrun count */
  98                         compat_sigval_t _sigval;        /* same as below */
  99                         int _sys_private;       /* not to be passed to user */
 100                         int _overrun_incr;      /* amount to add to overrun */
 101                 } _timer;
 102
 103                 /* POSIX.1b signals */
 104                 struct {
 105                         unsigned int _pid;      /* sender's pid */
 106                         unsigned int _uid;      /* sender's uid */
 107                         compat_sigval_t _sigval;
 108                 } _rt;
 109
 110                 /* SIGCHLD */
 111                 struct {
 112                         unsigned int _pid;      /* which child */
 113                         unsigned int _uid;      /* sender's uid */
 114                         int _status;            /* exit code */
 115                         compat_clock_t _utime;
 116                         compat_clock_t _stime;
 117                 } _sigchld;
 118
 119                 /* SIGILL, SIGFPE, SIGSEGV, SIGBUS */
 120                 struct {
 121                         unsigned int _addr;     /* faulting insn/memory ref. */
 122                 } _sigfault;
 123
 124                 /* SIGPOLL */
 125                 struct {
 126                         int _band;      /* POLL_IN, POLL_OUT, POLL_MSG */
 127                         int _fd;
 128                 } _sigpoll;
 129         } _sifields;
 130 } compat_siginfo_t;
 131
 132 struct sigframe32 {
 133         u32 pretcode;
 134         int sig;
 135         struct sigcontext_ia32 sc;
 136         struct _fpstate_ia32 fpstate;
 137         unsigned int extramask[_COMPAT_NSIG_WORDS-1];
 138 };
 139
 140 struct rt_sigframe32 {
 141         u32 pretcode;
 142         int sig;
 143         u32 pinfo;
 144         u32 puc;
 145         compat_siginfo_t info;
 146         struct ucontext_ia32 uc;
 147         struct _fpstate_ia32 fpstate;
 148 };
 149
 150 struct ustat32 {
 151         __u32                   f_tfree;
 152         compat_ino_t            f_tinode;
 153         char                    f_fname[6];
 154         char                    f_fpack[6];
 155 };
 156
 157 #define IA32_STACK_TOP IA32_PAGE_OFFSET
 158
 159 #ifdef __KERNEL__
 160 struct linux_binprm;
 161 extern int ia32_setup_arg_pages(struct linux_binprm *bprm,
 162                                 unsigned long stack_top, int exec_stack);
 163 struct mm_struct;
 164 extern void ia32_pick_mmap_layout(struct mm_struct *mm);
 165
 166 #endif
 167
 168 #endif /* !CONFIG_IA32_SUPPORT */
 169
 170 #endif /* ASM_X86__IA32_H */