include/asm-x86_64/ia32.h

   1 #ifndef _ASM_X86_64_IA32_H
   2 #define _ASM_X86_64_IA32_H
   3
   4 #include <linux/config.h>
   5
   6 #ifdef CONFIG_IA32_EMULATION
   7
   8 #include <linux/compat.h>
   9
  10 /*
  11  * 32 bit structures for IA32 support.
  12  */
  13
  14 #include <asm/sigcontext32.h>
  15
  16 /* signal.h */
  17 struct sigaction32 {
  18        unsigned int  sa_handler;        /* Really a pointer, but need to deal
  19                                              with 32 bits */
  20        unsigned int sa_flags;
  21        unsigned int sa_restorer;        /* Another 32 bit pointer */
  22        compat_sigset_t sa_mask;         /* A 32 bit mask */
  23 };
  24
  25 struct old_sigaction32 {
  26        unsigned int  sa_handler;        /* Really a pointer, but need to deal
  27                                              with 32 bits */
  28        compat_old_sigset_t sa_mask;             /* A 32 bit mask */
  29        unsigned int sa_flags;
  30        unsigned int sa_restorer;        /* Another 32 bit pointer */
  31 };
  32
  33 typedef struct sigaltstack_ia32 {
  34         unsigned int    ss_sp;
  35         int             ss_flags;
  36         unsigned int    ss_size;
  37 } stack_ia32_t;
  38
  39 struct ucontext_ia32 {
  40         unsigned int      uc_flags;
  41         unsigned int      uc_link;
  42         stack_ia32_t      uc_stack;
  43         struct sigcontext_ia32 uc_mcontext;
  44         compat_sigset_t   uc_sigmask;   /* mask last for extensibility */
  45 };
  46
  47 /* This matches struct stat64 in glibc2.2, hence the absolutely
  48  * insane amounts of padding around dev_t's.
  49  */
  50 struct stat64 {
  51         unsigned long long      st_dev;
  52         unsigned char           __pad0[4];
  53
  54 #define STAT64_HAS_BROKEN_ST_INO        1
  55         unsigned int            __st_ino;
  56
  57         unsigned int            st_mode;
  58         unsigned int            st_nlink;
  59
  60         unsigned int            st_uid;
  61         unsigned int            st_gid;
  62
  63         unsigned long long      st_rdev;
  64         unsigned char           __pad3[4];
  65
  66         long long               st_size;
  67         unsigned int            st_blksize;
  68
  69         long long               st_blocks;/* Number 512-byte blocks allocated. */
  70
  71         unsigned                st_atime;
  72         unsigned                st_atime_nsec;
  73         unsigned                st_mtime;
  74         unsigned                st_mtime_nsec;
  75         unsigned                st_ctime;
  76         unsigned                st_ctime_nsec;
  77
  78         unsigned long long      st_ino;
  79 } __attribute__((packed));
  80
  81 typedef struct compat_siginfo{
  82         int si_signo;
  83         int si_errno;
  84         int si_code;
  85
  86         union {
  87                 int _pad[((128/sizeof(int)) - 3)];
  88
  89                 /* kill() */
  90                 struct {
  91                         unsigned int _pid;      /* sender's pid */
  92                         unsigned int _uid;      /* sender's uid */
  93                 } _kill;
  94
  95                 /* POSIX.1b timers */
  96                 struct {
  97                         compat_timer_t _tid;    /* timer id */
  98                         int _overrun;           /* overrun count */
  99                         compat_sigval_t _sigval;        /* same as below */
 100                         int _sys_private;       /* not to be passed to user */
 101                         int _overrun_incr;      /* amount to add to overrun */
 102                 } _timer;
 103
 104                 /* POSIX.1b signals */
 105                 struct {
 106                         unsigned int _pid;      /* sender's pid */
 107                         unsigned int _uid;      /* sender's uid */
 108                         compat_sigval_t _sigval;
 109                 } _rt;
 110
 111                 /* SIGCHLD */
 112                 struct {
 113                         unsigned int _pid;      /* which child */
 114                         unsigned int _uid;      /* sender's uid */
 115                         int _status;            /* exit code */
 116                         compat_clock_t _utime;
 117                         compat_clock_t _stime;
 118                 } _sigchld;
 119
 120                 /* SIGILL, SIGFPE, SIGSEGV, SIGBUS */
 121                 struct {
 122                         unsigned int _addr;     /* faulting insn/memory ref. */
 123                 } _sigfault;
 124
 125                 /* SIGPOLL */
 126                 struct {
 127                         int _band;      /* POLL_IN, POLL_OUT, POLL_MSG */
 128                         int _fd;
 129                 } _sigpoll;
 130         } _sifields;
 131 } compat_siginfo_t;
 132
 133 struct sigframe32
 134 {
 135         u32 pretcode;
 136         int sig;
 137         struct sigcontext_ia32 sc;
 138         struct _fpstate_ia32 fpstate;
 139         unsigned int extramask[_COMPAT_NSIG_WORDS-1];
 140 };
 141
 142 struct rt_sigframe32
 143 {
 144         u32 pretcode;
 145         int sig;
 146         u32 pinfo;
 147         u32 puc;
 148         compat_siginfo_t info;
 149         struct ucontext_ia32 uc;
 150         struct _fpstate_ia32 fpstate;
 151 };
 152
 153 struct ustat32 {
 154         __u32   f_tfree;
 155         compat_ino_t            f_tinode;
 156         char                    f_fname[6];
 157         char                    f_fpack[6];
 158 };
 159
 160 #define IA32_STACK_TOP IA32_PAGE_OFFSET
 161
 162 #ifdef __KERNEL__
 163 struct user_desc;
 164 struct siginfo_t;
 165 int do_get_thread_area(struct thread_struct *t, struct user_desc __user *info);
 166 int do_set_thread_area(struct thread_struct *t, struct user_desc __user *info);
 167 int ia32_child_tls(struct task_struct *p, struct pt_regs *childregs);
 168
 169 struct linux_binprm;
 170 extern int ia32_setup_arg_pages(struct linux_binprm *bprm,
 171                                 unsigned long stack_top, int exec_stack);
 172 struct mm_struct;
 173 extern void ia32_pick_mmap_layout(struct mm_struct *mm);
 174
 175 #endif
 176
 177 #endif /* !CONFIG_IA32_SUPPORT */
 178
 179 #endif