libc/sysdeps/linux/cris/bits/syscalls.h

   1 #ifndef _BITS_SYSCALLS_H
   2 #define _BITS_SYSCALLS_H
   3
   4 #ifndef _SYSCALL_H
   5 #error "Never use <bits/syscall.h> directly; include <sys/syscall.h> instead."
   6 #endif
   7
   8 #ifndef __ASSEMBLER__
   9
  10 #include <errno.h>
  11
  12 #define SYS_ify(syscall_name)  (__NR_##syscall_name)
  13
  14 #undef _syscall0
  15 #define _syscall0(type,name) \
  16 type name(void) \
  17 { \
  18 return (type) (INLINE_SYSCALL(name, 0)); \
  19 }
  20
  21 #undef _syscall1
  22 #define _syscall1(type,name,type1,arg1) \
  23 type name(type1 arg1) \
  24 { \
  25 return (type) (INLINE_SYSCALL(name, 1, arg1)); \
  26 }
  27
  28 #undef _syscall2
  29 #define _syscall2(type,name,type1,arg1,type2,arg2) \
  30 type name(type1 arg1,type2 arg2) \
  31 { \
  32 return (type) (INLINE_SYSCALL(name, 2, arg1, arg2)); \
  33 }
  34
  35 #undef _syscall3
  36 #define _syscall3(type,name,type1,arg1,type2,arg2,type3,arg3) \
  37 type name(type1 arg1,type2 arg2,type3 arg3) \
  38 { \
  39 return (type) (INLINE_SYSCALL(name, 3, arg1, arg2, arg3)); \
  40 }
  41
  42 #undef _syscall4
  43 #define _syscall4(type,name,type1,arg1,type2,arg2,type3,arg3,type4,arg4) \
  44 type name (type1 arg1, type2 arg2, type3 arg3, type4 arg4) \
  45 { \
  46 return (type) (INLINE_SYSCALL(name, 4, arg1, arg2, arg3, arg4)); \
  47 }
  48
  49 #undef _syscall5
  50 #define _syscall5(type,name,type1,arg1,type2,arg2,type3,arg3,type4,arg4, \
  51           type5,arg5) \
  52 type name (type1 arg1,type2 arg2,type3 arg3,type4 arg4,type5 arg5) \
  53 { \
  54 return (type) (INLINE_SYSCALL(name, 5, arg1, arg2, arg3, arg4, arg5)); \
  55 }
  56
  57 #undef _syscall6
  58 #define _syscall6(type,name,type1,arg1,type2,arg2,type3,arg3,type4,arg4, \
  59           type5,arg5,type6,arg6) \
  60 type name (type1 arg1,type2 arg2,type3 arg3,type4 arg4,type5 arg5,type6 arg6) \
  61 { \
  62 return (type) (INLINE_SYSCALL(name, 6, arg1, arg2, arg3, arg4, arg5, arg6)); \
  63 }
  64
  65 #undef INLINE_SYSCALL
  66 #define INLINE_SYSCALL(name, nr, args...)       \
  67   ({                                            \
  68      unsigned long __sys_res;                   \
  69      register unsigned long __res __asm__ ("r10");      \
  70      LOAD_ARGS_c_##nr (args)                    \
  71      register unsigned long __callno __asm__ ("r9")     \
  72        = SYS_ify (name);                        \
  73      __asm__ __volatile__ (LOAD_ARGS_asm_##nr (args)    \
  74                    CHECK_ARGS_asm_##nr          \
  75                    "break 13"                   \
  76                    : "=r" (__res)               \
  77                    : ASM_ARGS_##nr (args)       \
  78                    : ASM_CLOBBER_##nr);         \
  79      __sys_res = __res;                         \
  80                                                 \
  81      if (__sys_res >= (unsigned long) -4096)    \
  82        {                                        \
  83          __set_errno (- __sys_res);             \
  84          __sys_res = (unsigned long) -1;        \
  85        }                                        \
  86      __sys_res;                                 \
  87    })
  88
  89 #define LOAD_ARGS_c_0()
  90 #define LOAD_ARGS_asm_0()
  91 #define ASM_CLOBBER_0 "memory"
  92 #define ASM_ARGS_0() "r" (__callno)
  93 #define CHECK_ARGS_asm_0
  94
  95 #define LOAD_ARGS_c_1(r10) \
  96         LOAD_ARGS_c_0()                                         \
  97         register unsigned long __r10 __asm__ ("r10") = (unsigned long) (r10);
  98 #define LOAD_ARGS_asm_1(r10) LOAD_ARGS_asm_0 ()
  99 #define ASM_CLOBBER_1 ASM_CLOBBER_0
 100 #define ASM_ARGS_1(r10) ASM_ARGS_0 (), "0" (__r10)
 101 #define CHECK_ARGS_asm_1                        \
 102         ".ifnc %0,$r10\n\t"                     \
 103         ".err\n\t"                              \
 104         ".endif\n\t"
 105
 106 #define LOAD_ARGS_c_2(r10, r11) \
 107         LOAD_ARGS_c_1(r10)                                      \
 108         register unsigned long __r11 __asm__ ("r11") = (unsigned long) (r11);
 109 #define LOAD_ARGS_asm_2(r10, r11) LOAD_ARGS_asm_1 (r10)
 110 #define ASM_CLOBBER_2 ASM_CLOBBER_1
 111 #define ASM_ARGS_2(r10, r11) ASM_ARGS_1 (r10), "r" (__r11)
 112 #define CHECK_ARGS_asm_2                        \
 113         ".ifnc %0-%3,$r10-$r11\n\t"             \
 114         ".err\n\t"                              \
 115         ".endif\n\t"
 116
 117 #define LOAD_ARGS_c_3(r10, r11, r12) \
 118         LOAD_ARGS_c_2(r10, r11)                                 \
 119         register unsigned long __r12 __asm__ ("r12") = (unsigned long) (r12);
 120 #define LOAD_ARGS_asm_3(r10, r11, r12) LOAD_ARGS_asm_2 (r10, r11)
 121 #define ASM_CLOBBER_3 ASM_CLOBBER_2
 122 #define ASM_ARGS_3(r10, r11, r12) ASM_ARGS_2 (r10, r11), "r" (__r12)
 123 #define CHECK_ARGS_asm_3                        \
 124         ".ifnc %0-%3-%4,$r10-$r11-$r12\n\t"     \
 125         ".err\n\t"                              \
 126         ".endif\n\t"
 127
 128 #define LOAD_ARGS_c_4(r10, r11, r12, r13) \
 129         LOAD_ARGS_c_3(r10, r11, r12)                            \
 130         register unsigned long __r13 __asm__ ("r13") = (unsigned long) (r13);
 131 #define LOAD_ARGS_asm_4(r10, r11, r12, r13) LOAD_ARGS_asm_3 (r10, r11, r12)
 132 #define ASM_CLOBBER_4 ASM_CLOBBER_3
 133 #define ASM_ARGS_4(r10, r11, r12, r13) ASM_ARGS_3 (r10, r11, r12), "r" (__r13)
 134 #define CHECK_ARGS_asm_4                                \
 135         ".ifnc %0-%3-%4-%5,$r10-$r11-$r12-$r13\n\t"     \
 136         ".err\n\t"                                      \
 137         ".endif\n\t"
 138
 139 #define LOAD_ARGS_c_5(r10, r11, r12, r13, mof) \
 140         LOAD_ARGS_c_4(r10, r11, r12, r13)
 141 #define LOAD_ARGS_asm_5(r10, r11, r12, r13, mof) \
 142         LOAD_ARGS_asm_4 (r10, r11, r12, r13) "move %6,$mof\n\t"
 143 #define ASM_CLOBBER_5 ASM_CLOBBER_4
 144 #define ASM_ARGS_5(r10, r11, r12, r13, mof) \
 145         ASM_ARGS_4 (r10, r11, r12, r13), "g" (mof)
 146 #define CHECK_ARGS_asm_5 CHECK_ARGS_asm_4
 147
 148 #define LOAD_ARGS_c_6(r10, r11, r12, r13, mof, srp)             \
 149         LOAD_ARGS_c_5(r10, r11, r12, r13, mof)
 150 #define LOAD_ARGS_asm_6(r10, r11, r12, r13, mof, srp)           \
 151         LOAD_ARGS_asm_5(r10, r11, r12, r13, mof)                \
 152         "move %7,$srp\n\t"
 153 #define ASM_CLOBBER_6 ASM_CLOBBER_5, "srp"
 154 #define ASM_ARGS_6(r10, r11, r12, r13, mof, srp) \
 155         ASM_ARGS_5 (r10, r11, r12, r13, mof), "g" (srp)
 156 #define CHECK_ARGS_asm_6 CHECK_ARGS_asm_5
 157
 158 #endif /* not __ASSEMBLER__ */
 159 #endif /* _BITS_SYSCALLS_H */