l4/pkg/l4re-core/uclibc/lib/contrib/uclibc/libc/sysdeps/linux/avr32/bits/syscalls.h

   1 #ifndef _BITS_SYSCALLS_H
   2 #define _BITS_SYSCALLS_H
   3 #ifndef _SYSCALL_H
   4 # error "Never use <bits/syscalls.h> directly; include <sys/syscall.h> instead."
   5 #endif
   6
   7 #ifndef __ASSEMBLER__
   8
   9 #include <errno.h>
  10
  11 #define INTERNAL_SYSCALL_NCS(name, err, nr, args...)                    \
  12 (__extension__ \
  13         ({                                                              \
  14                 register int __a1 __asm__("r12");                       \
  15                 register int _scno __asm__("r8") = name;                \
  16                 LOAD_ARGS_##nr (args);                                  \
  17                 __asm__ __volatile__("scall     /* syscall " #name " */" \
  18                               : "=r" (__a1)                             \
  19                               : "r"(_scno) ASM_ARGS_##nr                \
  20                               : "cc", "memory");                        \
  21                 __a1;                                                   \
  22         }) \
  23 )
  24 #define INTERNAL_SYSCALL_ERROR_P(val, err)              \
  25         ((unsigned int)(val) >= 0xfffff001U)
  26
  27 #define LOAD_ARGS_0() do { } while(0)
  28 #define ASM_ARGS_0
  29 #define LOAD_ARGS_1(a1)                                 \
  30         __a1 = (int) (a1);                              \
  31         LOAD_ARGS_0()
  32 #define ASM_ARGS_1      ASM_ARGS_0, "r"(__a1)
  33 #define LOAD_ARGS_2(a1, a2)                             \
  34         register int __a2 __asm__("r11") = (int)(a2);   \
  35         LOAD_ARGS_1(a1)
  36 #define ASM_ARGS_2      ASM_ARGS_1, "r"(__a2)
  37 #define LOAD_ARGS_3(a1, a2, a3)                         \
  38         register int __a3 __asm__("r10") = (int)(a3);   \
  39         LOAD_ARGS_2(a1, a2)
  40 #define ASM_ARGS_3      ASM_ARGS_2, "r"(__a3)
  41 #define LOAD_ARGS_4(a1, a2, a3, a4)                     \
  42         register int __a4 __asm__("r9") = (int)(a4);    \
  43         LOAD_ARGS_3(a1, a2, a3)
  44 #define ASM_ARGS_4      ASM_ARGS_3, "r"(__a4)
  45 #define LOAD_ARGS_5(a1, a2, a3, a4, a5)                 \
  46         register int __a5 __asm__("r5") = (int)(a5);    \
  47         LOAD_ARGS_4(a1, a2, a3, a4)
  48 #define ASM_ARGS_5      ASM_ARGS_4, "r"(__a5)
  49 #define LOAD_ARGS_6(a1, a2, a3, a4, a5, a6)             \
  50         register int __a6 __asm__("r3") = (int)(a6);    \
  51         LOAD_ARGS_5(a1, a2, a3, a4, a5)
  52 #define ASM_ARGS_6      ASM_ARGS_5, "r"(__a6)
  53
  54 #endif /* __ASSEMBLER__ */
  55 #endif /* _BITS_SYSCALLS_H */