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_MAX 0x100
  18
  19 #ifndef __ASM__
  20 void
  21 syscall_install();
  22
  23 #define asmlinkage __attribute__((regparm(0)))
  24
  25 #define __PARAM_MAP1(t1, p1) t1 p1
  26 #define __PARAM_MAP2(t1, p1, ...) t1 p1, __PARAM_MAP1(__VA_ARGS__)
  27 #define __PARAM_MAP3(t1, p1, ...) t1 p1, __PARAM_MAP2(__VA_ARGS__)
  28 #define __PARAM_MAP4(t1, p1, ...) t1 p1, __PARAM_MAP3(__VA_ARGS__)
  29 #define __PARAM_MAP5(t1, p1, ...) t1 p1, __PARAM_MAP4(__VA_ARGS__)
  30 #define __PARAM_MAP6(t1, p1, ...) t1 p1, __PARAM_MAP5(__VA_ARGS__)
  31
  32 #define ___DOINT33(callcode, rettype)                                          \
  33     int v;                                                                     \
  34     asm volatile("int %1\n" : "=a"(v) : "i"(LUNAIX_SYS_CALL), "a"(callcode));  \
  35     return (rettype)v;
  36
  37 #define __DEFINE_LXSYSCALL(rettype, name) asmlinkage rettype __lxsys_##name()
  38
  39 #define __DEFINE_LXSYSCALL1(rettype, name, t1, p1)                             \
  40     asmlinkage rettype __lxsys_##name(__PARAM_MAP1(t1, p1))
  41
  42 #define __DEFINE_LXSYSCALL2(rettype, name, t1, p1, t2, p2)                     \
  43     asmlinkage rettype __lxsys_##name(__PARAM_MAP2(t1, p1, t2, p2))
  44
  45 #define __DEFINE_LXSYSCALL3(rettype, name, t1, p1, t2, p2, t3, p3)             \
  46     asmlinkage rettype __lxsys_##name(__PARAM_MAP3(t1, p1, t2, p2, t3, p3))
  47
  48 #define __DEFINE_LXSYSCALL4(rettype, name, t1, p1, t2, p2, t3, p3, t4, p4)     \
  49     asmlinkage rettype __lxsys_##nam(                                          \
  50       __PARAM_MAP4(t1, p1, t2, p2, t3, p3, t4, p4))
  51
  52 #define __LXSYSCALL(rettype, name)                                             \
  53     static rettype name()                                                      \
  54     {                                                                          \
  55         ___DOINT33(__SYSCALL_##name, rettype)                                  \
  56     }
  57
  58 #define __LXSYSCALL1(rettype, name, t1, p1)                                    \
  59     static rettype name(__PARAM_MAP1(t1, p1))                                  \
  60     {                                                                          \
  61         asm("" ::"b"(p1));                                                     \
  62         ___DOINT33(__SYSCALL_##name, rettype)                                  \
  63     }
  64
  65 #define __LXSYSCALL2(rettype, name, t1, p1, t2, p2)                            \
  66     static rettype name(__PARAM_MAP2(t1, p1, t2, p2))                          \
  67     {                                                                          \
  68         asm("\n" ::"b"(p1), "c"(p2));                                          \
  69         ___DOINT33(__SYSCALL_##name, rettype)                                  \
  70     }
  71
  72 #define __LXSYSCALL3(rettype, name, t1, p1, t2, p2, t3, p3)                    \
  73     static rettype name(__PARAM_MAP3(t1, p1, t2, p2, t3, p3))                  \
  74     {                                                                          \
  75         asm("\n" ::"b"(p1), "c"(p2), "d"(p3));                                 \
  76         ___DOINT33(__SYSCALL_##name, rettype)                                  \
  77     }
  78
  79 #define __LXSYSCALL4(rettype, name, t1, p1, t2, p2, t3, p3, t4, p4)            \
  80     static rettype name(__PARAM_MAP3(t1, p1, t2, p2, t3, p3, t4, p4))          \
  81     {                                                                          \
  82         asm("\n" ::"b"(p1), "c"(p2), "d"(p3), "D"(p4));                        \
  83         ___DOINT33(__SYSCALL_##name, rettype)                                  \
  84     }
  85 #endif
  86 #endif /* __LUNAIX_SYSCALL_H */