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 #define __SYSCALL_sigreturn 11
  17 #define __SYSCALL_sigprocmask 12
  18 #define __SYSCALL_signal 13
  19 #define __SYSCALL_pause 14
  20
  21 #define __SYSCALL_MAX 0x100
  22
  23 #ifndef __ASM__
  24 void
  25 syscall_install();
  26
  27 static void*
  28 syscall(unsigned int callcode)
  29 {
  30     asm volatile("int %0" ::"i"(LUNAIX_SYS_CALL), "D"(callcode) : "eax");
  31 }
  32
  33 #define asmlinkage __attribute__((regparm(0)))
  34
  35 #define __PARAM_MAP1(t1, p1) t1 p1
  36 #define __PARAM_MAP2(t1, p1, ...) t1 p1, __PARAM_MAP1(__VA_ARGS__)
  37 #define __PARAM_MAP3(t1, p1, ...) t1 p1, __PARAM_MAP2(__VA_ARGS__)
  38 #define __PARAM_MAP4(t1, p1, ...) t1 p1, __PARAM_MAP3(__VA_ARGS__)
  39 #define __PARAM_MAP5(t1, p1, ...) t1 p1, __PARAM_MAP4(__VA_ARGS__)
  40 #define __PARAM_MAP6(t1, p1, ...) t1 p1, __PARAM_MAP5(__VA_ARGS__)
  41
  42 #define ___DOINT33(callcode, rettype)                                          \
  43     int v;                                                                     \
  44     asm volatile("int %1\n" : "=a"(v) : "i"(LUNAIX_SYS_CALL), "a"(callcode));  \
  45     return (rettype)v;
  46
  47 #define __DEFINE_LXSYSCALL(rettype, name) asmlinkage rettype __lxsys_##name()
  48
  49 #define __DEFINE_LXSYSCALL1(rettype, name, t1, p1)                             \
  50     asmlinkage rettype __lxsys_##name(__PARAM_MAP1(t1, p1))
  51
  52 #define __DEFINE_LXSYSCALL2(rettype, name, t1, p1, t2, p2)                     \
  53     asmlinkage rettype __lxsys_##name(__PARAM_MAP2(t1, p1, t2, p2))
  54
  55 #define __DEFINE_LXSYSCALL3(rettype, name, t1, p1, t2, p2, t3, p3)             \
  56     asmlinkage rettype __lxsys_##name(__PARAM_MAP3(t1, p1, t2, p2, t3, p3))
  57
  58 #define __DEFINE_LXSYSCALL4(rettype, name, t1, p1, t2, p2, t3, p3, t4, p4)     \
  59     asmlinkage rettype __lxsys_##name(                                         \
  60       __PARAM_MAP4(t1, p1, t2, p2, t3, p3, t4, p4))
  61
  62 #define __LXSYSCALL(rettype, name)                                             \
  63     static rettype name()                                                      \
  64     {                                                                          \
  65         ___DOINT33(__SYSCALL_##name, rettype)                                  \
  66     }
  67
  68 #define __LXSYSCALL1(rettype, name, t1, p1)                                    \
  69     static rettype name(__PARAM_MAP1(t1, p1))                                  \
  70     {                                                                          \
  71         asm("" ::"b"(p1));                                                     \
  72         ___DOINT33(__SYSCALL_##name, rettype)                                  \
  73     }
  74
  75 #define __LXSYSCALL2(rettype, name, t1, p1, t2, p2)                            \
  76     static rettype name(__PARAM_MAP2(t1, p1, t2, p2))                          \
  77     {                                                                          \
  78         asm("\n" ::"b"(p1), "c"(p2));                                          \
  79         ___DOINT33(__SYSCALL_##name, rettype)                                  \
  80     }
  81
  82 #define __LXSYSCALL3(rettype, name, t1, p1, t2, p2, t3, p3)                    \
  83     static rettype name(__PARAM_MAP3(t1, p1, t2, p2, t3, p3))                  \
  84     {                                                                          \
  85         asm("\n" ::"b"(p1), "c"(p2), "d"(p3));                                 \
  86         ___DOINT33(__SYSCALL_##name, rettype)                                  \
  87     }
  88
  89 #define __LXSYSCALL4(rettype, name, t1, p1, t2, p2, t3, p3, t4, p4)            \
  90     static rettype name(__PARAM_MAP3(t1, p1, t2, p2, t3, p3, t4, p4))          \
  91     {                                                                          \
  92         asm("\n" ::"b"(p1), "c"(p2), "d"(p3), "D"(p4));                        \
  93         ___DOINT33(__SYSCALL_##name, rettype)                                  \
  94     }
  95 #endif
  96 #endif /* __LUNAIX_SYSCALL_H */