klibc/klibc/arch/i386/include/klibc/archsys.h

   1 /*
   2  * arch/i386/include/klibc/archsys.h
   3  *
   4  * Architecture-specific syscall definitions
   5  */
   6
   7 #ifndef _KLIBC_ARCHSYS_H
   8 #define _KLIBC_ARCHSYS_H
   9
  10 /*
  11  * If we're compiling i386 in PIC mode, we need to treat %ebx
  12  * specially.  Most of these are copied from the equivalent file in
  13  * newlib and were written by Werner Almesberger.
  14  */
  15 #if defined(__PIC__)
  16
  17 /* _syscall0() is the same as non-PIC */
  18
  19 #undef _syscall1
  20 #define _syscall1(type,name,type1,arg1) \
  21 type name(type1 arg1) \
  22 { \
  23 long __res; \
  24 __asm__ __volatile__ ("push %%ebx; movl %2,%%ebx; int $0x80; pop %%ebx" \
  25         : "=a" (__res) \
  26         : "0" (__NR_##name),"r" ((long)(arg1))); \
  27 __syscall_return(type,__res); \
  28 }
  29
  30 #undef _syscall2
  31 #define _syscall2(type,name,type1,arg1,type2,arg2) \
  32 type name(type1 arg1,type2 arg2) \
  33 { \
  34 long __res; \
  35 __asm__ __volatile__ ("push %%ebx; movl %2,%%ebx; int $0x80; pop %%ebx" \
  36         : "=a" (__res) \
  37         : "0" (__NR_##name),"r" ((long)(arg1)),"c" ((long)(arg2))); \
  38 __syscall_return(type,__res); \
  39 }
  40
  41 #undef _syscall3
  42 #define _syscall3(type,name,type1,arg1,type2,arg2,type3,arg3) \
  43 type name(type1 arg1,type2 arg2,type3 arg3) \
  44 { \
  45 long __res; \
  46 __asm__ __volatile__ ("push %%ebx; movl %2,%%ebx; int $0x80; pop %%ebx" \
  47         : "=a" (__res) \
  48         : "0" (__NR_##name),"r" ((long)(arg1)),"c" ((long)(arg2)), \
  49                 "d" ((long)(arg3))); \
  50 __syscall_return(type,__res); \
  51 }
  52
  53 #undef _syscall4
  54 #define _syscall4(type,name,type1,arg1,type2,arg2,type3,arg3,type4,arg4) \
  55 type name (type1 arg1, type2 arg2, type3 arg3, type4 arg4) \
  56 { \
  57 long __res; \
  58 __asm__ __volatile__ ("push %%ebx; movl %2,%%ebx; int $0x80; pop %%ebx" \
  59         : "=a" (__res) \
  60         : "0" (__NR_##name),"r" ((long)(arg1)),"c" ((long)(arg2)), \
  61           "d" ((long)(arg3)),"S" ((long)(arg4))); \
  62 __syscall_return(type,__res); \
  63 }
  64
  65 #undef _syscall5
  66 #define _syscall5(type,name,type1,arg1,type2,arg2,type3,arg3,type4,arg4, \
  67           type5,arg5) \
  68 type name (type1 arg1,type2 arg2,type3 arg3,type4 arg4,type5 arg5) \
  69 { \
  70 long __res; \
  71 __asm__ __volatile__ ("push %%ebx; movl %2,%%ebx; int $0x80; pop %%ebx" \
  72         : "=a" (__res) \
  73         : "0" (__NR_##name),"m" ((long)(arg1)),"c" ((long)(arg2)), \
  74           "d" ((long)(arg3)),"S" ((long)(arg4)),"D" ((long)(arg5))); \
  75 __syscall_return(type,__res); \
  76 }
  77
  78 #undef _syscall6
  79 #define _syscall6(type,name,type1,arg1,type2,arg2,type3,arg3,type4,arg4, \
  80           type5,arg5,type6,arg6) \
  81 type name (type1 arg1,type2 arg2,type3 arg3,type4 arg4,type5 arg5,type6 arg6) \
  82 { \
  83 long __res; \
  84 __asm__ __volatile__ ("push %%ebx; pushl %%ebp; movl %2,%%ebx; " \
  85                       "movl %%eax,%%ebp; movl %1,%%eax; int $0x80; " \
  86                       "pop %%ebp ; pop %%ebx" \
  87         : "=a" (__res) \
  88         : "i" (__NR_##name),"m" ((long)(arg1)),"c" ((long)(arg2)), \
  89           "d" ((long)(arg3)),"S" ((long)(arg4)),"D" ((long)(arg5)), \
  90           "a" ((long)(arg6))); \
  91 __syscall_return(type,__res); \
  92 }
  93
  94 #endif /* __PIC__ */
  95
  96 #endif /* _KLIBC_ARCHSYS_H */