arch/x86/include/asm/ia32.h

   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 struct ucontext_x32 {
  47         unsigned int      uc_flags;
  48         unsigned int      uc_link;
  49         stack_ia32_t      uc_stack;
  50         unsigned int      uc__pad0;     /* needed for alignment */
  51         struct sigcontext uc_mcontext;  /* the 64-bit sigcontext type */
  52         compat_sigset_t   uc_sigmask;   /* mask last for extensibility */
  53 };
  54
  55 /* This matches struct stat64 in glibc2.2, hence the absolutely
  56  * insane amounts of padding around dev_t's.
  57  */
  58 struct stat64 {
  59         unsigned long long      st_dev;
  60         unsigned char           __pad0[4];
  61
  62 #define STAT64_HAS_BROKEN_ST_INO        1
  63         unsigned int            __st_ino;
  64
  65         unsigned int            st_mode;
  66         unsigned int            st_nlink;
  67
  68         unsigned int            st_uid;
  69         unsigned int            st_gid;
  70
  71         unsigned long long      st_rdev;
  72         unsigned char           __pad3[4];
  73
  74         long long               st_size;
  75         unsigned int            st_blksize;
  76
  77         long long               st_blocks;/* Number 512-byte blocks allocated */
  78
  79         unsigned                st_atime;
  80         unsigned                st_atime_nsec;
  81         unsigned                st_mtime;
  82         unsigned                st_mtime_nsec;
  83         unsigned                st_ctime;
  84         unsigned                st_ctime_nsec;
  85
  86         unsigned long long      st_ino;
  87 } __attribute__((packed));
  88
  89 typedef struct compat_siginfo {
  90         int si_signo;
  91         int si_errno;
  92         int si_code;
  93
  94         union {
  95                 int _pad[((128 / sizeof(int)) - 3)];
  96
  97                 /* kill() */
  98                 struct {
  99                         unsigned int _pid;      /* sender's pid */
 100                         unsigned int _uid;      /* sender's uid */
 101                 } _kill;
 102
 103                 /* POSIX.1b timers */
 104                 struct {
 105                         compat_timer_t _tid;    /* timer id */
 106                         int _overrun;           /* overrun count */
 107                         compat_sigval_t _sigval;        /* same as below */
 108                         int _sys_private;       /* not to be passed to user */
 109                         int _overrun_incr;      /* amount to add to overrun */
 110                 } _timer;
 111
 112                 /* POSIX.1b signals */
 113                 struct {
 114                         unsigned int _pid;      /* sender's pid */
 115                         unsigned int _uid;      /* sender's uid */
 116                         compat_sigval_t _sigval;
 117                 } _rt;
 118
 119                 /* SIGCHLD */
 120                 struct {
 121                         unsigned int _pid;      /* which child */
 122                         unsigned int _uid;      /* sender's uid */
 123                         int _status;            /* exit code */
 124                         compat_clock_t _utime;
 125                         compat_clock_t _stime;
 126                 } _sigchld;
 127
 128                 /* SIGCHLD (x32 version) */
 129                 struct {
 130                         unsigned int _pid;      /* which child */
 131                         unsigned int _uid;      /* sender's uid */
 132                         int _status;            /* exit code */
 133                         s64 _utime;
 134                         s64 _stime;
 135                 } _sigchld_x32;
 136
 137                 /* SIGILL, SIGFPE, SIGSEGV, SIGBUS */
 138                 struct {
 139                         unsigned int _addr;     /* faulting insn/memory ref. */
 140                 } _sigfault;
 141
 142                 /* SIGPOLL */
 143                 struct {
 144                         int _band;      /* POLL_IN, POLL_OUT, POLL_MSG */
 145                         int _fd;
 146                 } _sigpoll;
 147         } _sifields;
 148 } compat_siginfo_t;
 149
 150 #define IA32_STACK_TOP IA32_PAGE_OFFSET
 151
 152 #ifdef __KERNEL__
 153 struct linux_binprm;
 154 extern int ia32_setup_arg_pages(struct linux_binprm *bprm,
 155                                 unsigned long stack_top, int exec_stack);
 156 struct mm_struct;
 157 extern void ia32_pick_mmap_layout(struct mm_struct *mm);
 158
 159 #endif
 160
 161 #endif /* !CONFIG_IA32_SUPPORT */
 162
 163 #endif /* _ASM_X86_IA32_H */