lunaix-os/includes/lunaix/syscall.h

   1 #ifndef __LUNAIX_SYSCALL_H
   2 #define __LUNAIX_SYSCALL_H
   3
   4 #include <arch/x86/vectors.h>
   5
   6 #define __SYSCALL_fork 1
   7 #define __SYSCALL_yield 2
   8 #define __SYSCALL_sbrk 3
   9 #define __SYSCALL_brk 4
  10 #define __SYSCALL_getpid 5
  11 #define __SYSCALL_getppid 6
  12 #define __SYSCALL_sleep 7
  13 #define __SYSCALL__exit 8
  14 #define __SYSCALL_wait 9
  15 #define __SYSCALL_waitpid 10
  16
  17 #define __SYSCALL_sigreturn 11
  18 #define __SYSCALL_sigprocmask 12
  19 #define __SYSCALL_signal 13
  20 #define __SYSCALL_pause 14
  21 #define __SYSCALL_kill 15
  22 #define __SYSCALL_alarm 16
  23 #define __SYSCALL_sigpending 17
  24 #define __SYSCALL_sigsuspend 18
  25 #define __SYSCALL_open 19
  26 #define __SYSCALL_close 20
  27
  28 #define __SYSCALL_read 21
  29 #define __SYSCALL_write 22
  30 #define __SYSCALL_readdir 23
  31 #define __SYSCALL_mkdir 24
  32 #define __SYSCALL_lseek 25
  33 #define __SYSCALL_geterrno 26
  34 #define __SYSCALL_readlink 27
  35 #define __SYSCALL_readlinkat 28
  36 #define __SYSCALL_rmdir 29
  37
  38 #define __SYSCALL_unlink 30
  39 #define __SYSCALL_unlinkat 31
  40 #define __SYSCALL_link 32
  41 #define __SYSCALL_fsync 33
  42 #define __SYSCALL_dup 34
  43 #define __SYSCALL_dup2 35
  44 #define __SYSCALL_realpathat 36
  45 #define __SYSCALL_symlink 37
  46 #define __SYSCALL_chdir 38
  47 #define __SYSCALL_fchdir 39
  48 #define __SYSCALL_getcwd 40
  49 #define __SYSCALL_rename 41
  50 #define __SYSCALL_mount 42
  51 #define __SYSCALL_unmount 43
  52 #define __SYSCALL_getxattr 44
  53 #define __SYSCALL_setxattr 45
  54 #define __SYSCALL_fgetxattr 46
  55 #define __SYSCALL_fsetxattr 47
  56
  57 #define __SYSCALL_ioctl 48
  58 #define __SYSCALL_getpgid 49
  59 #define __SYSCALL_setpgid 50
  60
  61 #define __SYSCALL_MAX 0x100
  62
  63 #ifndef __ASM__
  64
  65 #define SYSCALL_ESTATUS(errno) -((errno) != 0)
  66
  67 void
  68 syscall_install();
  69
  70 #define asmlinkage __attribute__((regparm(0)))
  71
  72 #define __PARAM_MAP1(t1, p1) t1 p1
  73 #define __PARAM_MAP2(t1, p1, ...) t1 p1, __PARAM_MAP1(__VA_ARGS__)
  74 #define __PARAM_MAP3(t1, p1, ...) t1 p1, __PARAM_MAP2(__VA_ARGS__)
  75 #define __PARAM_MAP4(t1, p1, ...) t1 p1, __PARAM_MAP3(__VA_ARGS__)
  76 #define __PARAM_MAP5(t1, p1, ...) t1 p1, __PARAM_MAP4(__VA_ARGS__)
  77 #define __PARAM_MAP6(t1, p1, ...) t1 p1, __PARAM_MAP5(__VA_ARGS__)
  78
  79 #define __DEFINE_LXSYSCALL(rettype, name) asmlinkage rettype __lxsys_##name()
  80
  81 #define __DEFINE_LXSYSCALL1(rettype, name, t1, p1)                             \
  82     asmlinkage rettype __lxsys_##name(__PARAM_MAP1(t1, p1))
  83
  84 #define __DEFINE_LXSYSCALL2(rettype, name, t1, p1, t2, p2)                     \
  85     asmlinkage rettype __lxsys_##name(__PARAM_MAP2(t1, p1, t2, p2))
  86
  87 #define __DEFINE_LXSYSCALL3(rettype, name, t1, p1, t2, p2, t3, p3)             \
  88     asmlinkage rettype __lxsys_##name(__PARAM_MAP3(t1, p1, t2, p2, t3, p3))
  89
  90 #define __DEFINE_LXSYSCALL4(rettype, name, t1, p1, t2, p2, t3, p3, t4, p4)     \
  91     asmlinkage rettype __lxsys_##name(                                         \
  92       __PARAM_MAP4(t1, p1, t2, p2, t3, p3, t4, p4))
  93
  94 #define __SYSCALL_INTERRUPTIBLE(code)                                          \
  95     asm("sti");                                                                \
  96     { code };                                                                  \
  97     asm("cli");
  98
  99 #define ___DOINT33(callcode, rettype)                                          \
 100     int v;                                                                     \
 101     asm volatile("int %1\n" : "=a"(v) : "i"(LUNAIX_SYS_CALL), "a"(callcode));  \
 102     return (rettype)v;
 103
 104 #define __LXSYSCALL(rettype, name)                                             \
 105     static rettype name()                                                      \
 106     {                                                                          \
 107         ___DOINT33(__SYSCALL_##name, rettype)                                  \
 108     }
 109
 110 #define __LXSYSCALL1(rettype, name, t1, p1)                                    \
 111     static rettype name(__PARAM_MAP1(t1, p1))                                  \
 112     {                                                                          \
 113         asm("" ::"b"(p1));                                                     \
 114         ___DOINT33(__SYSCALL_##name, rettype)                                  \
 115     }
 116
 117 #define __LXSYSCALL2(rettype, name, t1, p1, t2, p2)                            \
 118     static rettype name(__PARAM_MAP2(t1, p1, t2, p2))                          \
 119     {                                                                          \
 120         asm("\n" ::"b"(p1), "c"(p2));                                          \
 121         ___DOINT33(__SYSCALL_##name, rettype)                                  \
 122     }
 123
 124 #define __LXSYSCALL3(rettype, name, t1, p1, t2, p2, t3, p3)                    \
 125     static rettype name(__PARAM_MAP3(t1, p1, t2, p2, t3, p3))                  \
 126     {                                                                          \
 127         asm("\n" ::"b"(p1), "c"(p2), "d"(p3));                                 \
 128         ___DOINT33(__SYSCALL_##name, rettype)                                  \
 129     }
 130
 131 #define __LXSYSCALL4(rettype, name, t1, p1, t2, p2, t3, p3, t4, p4)            \
 132     static rettype name(__PARAM_MAP4(t1, p1, t2, p2, t3, p3, t4, p4))          \
 133     {                                                                          \
 134         asm("\n" ::"b"(p1), "c"(p2), "d"(p3), "D"(p4));                        \
 135         ___DOINT33(__SYSCALL_##name, rettype)                                  \
 136     }
 137
 138 #define __LXSYSCALL2_VARG(rettype, name, t1, p1, t2, p2)                       \
 139     __attribute__((noinline)) static rettype name(                             \
 140       __PARAM_MAP2(t1, p1, t2, p2), ...)                                       \
 141     {                                                                          \
 142         /* No inlining! This depends on the call frame assumption */           \
 143         void* _last = (void*)&p2 + sizeof(void*);                              \
 144         asm("\n" ::"b"(p1), "c"(p2), "d"(_last));                              \
 145         ___DOINT33(__SYSCALL_##name, rettype)                                  \
 146     }
 147 #endif
 148 #endif /* __LUNAIX_SYSCALL_H */