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 static void*
  24 syscall(unsigned int callcode)
  25 {
  26     asm volatile("int %0" ::"i"(LUNAIX_SYS_CALL), "D"(callcode) : "eax");
  27 }
  28
  29 #define asmlinkage __attribute__((regparm(0)))
  30
  31 #define __PARAM_MAP1(t1, p1) t1 p1
  32 #define __PARAM_MAP2(t1, p1, ...) t1 p1, __PARAM_MAP1(__VA_ARGS__)
  33 #define __PARAM_MAP3(t1, p1, ...) t1 p1, __PARAM_MAP2(__VA_ARGS__)
  34 #define __PARAM_MAP4(t1, p1, ...) t1 p1, __PARAM_MAP3(__VA_ARGS__)
  35 #define __PARAM_MAP5(t1, p1, ...) t1 p1, __PARAM_MAP4(__VA_ARGS__)
  36 #define __PARAM_MAP6(t1, p1, ...) t1 p1, __PARAM_MAP5(__VA_ARGS__)
  37
  38 #define ___DOINT33(callcode, rettype)                                          \
  39     int v;                                                                     \
  40     asm volatile("int %1\n" : "=a"(v) : "i"(LUNAIX_SYS_CALL), "a"(callcode));  \
  41     return (rettype)v;
  42
  43 #define __DEFINE_LXSYSCALL(rettype, name) asmlinkage rettype __lxsys_##name()
  44
  45 #define __DEFINE_LXSYSCALL1(rettype, name, t1, p1)                             \
  46     asmlinkage rettype __lxsys_##name(__PARAM_MAP1(t1, p1))
  47
  48 #define __DEFINE_LXSYSCALL2(rettype, name, t1, p1, t2, p2)                     \
  49     asmlinkage rettype __lxsys_##name(__PARAM_MAP2(t1, p1, t2, p2))
  50
  51 #define __DEFINE_LXSYSCALL3(rettype, name, t1, p1, t2, p2, t3, p3)             \
  52     asmlinkage rettype __lxsys_##name(__PARAM_MAP3(t1, p1, t2, p2, t3, p3))
  53
  54 #define __DEFINE_LXSYSCALL4(rettype, name, t1, p1, t2, p2, t3, p3, t4, p4)     \
  55     asmlinkage rettype __lxsys_##nam(                                          \
  56       __PARAM_MAP4(t1, p1, t2, p2, t3, p3, t4, p4))
  57
  58 #define __LXSYSCALL(rettype, name)                                             \
  59     static rettype name()                                                      \
  60     {                                                                          \
  61         ___DOINT33(__SYSCALL_##name, rettype)                                  \
  62     }
  63
  64 #define __LXSYSCALL1(rettype, name, t1, p1)                                    \
  65     static rettype name(__PARAM_MAP1(t1, p1))                                  \
  66     {                                                                          \
  67         asm("" ::"b"(p1));                                                     \
  68         ___DOINT33(__SYSCALL_##name, rettype)                                  \
  69     }
  70
  71 #define __LXSYSCALL2(rettype, name, t1, p1, t2, p2)                            \
  72     static rettype name(__PARAM_MAP2(t1, p1, t2, p2))                          \
  73     {                                                                          \
  74         asm("\n" ::"b"(p1), "c"(p2));                                          \
  75         ___DOINT33(__SYSCALL_##name, rettype)                                  \
  76     }
  77
  78 #define __LXSYSCALL3(rettype, name, t1, p1, t2, p2, t3, p3)                    \
  79     static rettype name(__PARAM_MAP3(t1, p1, t2, p2, t3, p3))                  \
  80     {                                                                          \
  81         asm("\n" ::"b"(p1), "c"(p2), "d"(p3));                                 \
  82         ___DOINT33(__SYSCALL_##name, rettype)                                  \
  83     }
  84
  85 #define __LXSYSCALL4(rettype, name, t1, p1, t2, p2, t3, p3, t4, p4)            \
  86     static rettype name(__PARAM_MAP3(t1, p1, t2, p2, t3, p3, t4, p4))          \
  87     {                                                                          \
  88         asm("\n" ::"b"(p1), "c"(p2), "d"(p3), "D"(p4));                        \
  89         ___DOINT33(__SYSCALL_##name, rettype)                                  \
  90     }
  91 #endif
  92 #endif /* __LUNAIX_SYSCALL_H */