l4/pkg/uclibc/lib/contrib/uclibc/libc/sysdeps/linux/microblaze/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
   8 #ifndef __ASSEMBLER__
   9
  10 #include <errno.h>
  11
  12 #define INTERNAL_SYSCALL_NCS(name, err, nr, args...)                    \
  13 (__extension__ \
  14         ({                                                              \
  15                 register int __ret __asm__("r3");                       \
  16                 register int _scno __asm__("r12") = name;               \
  17                 LOAD_ARGS_##nr (args);                                  \
  18                 __asm__ __volatile__("brki      r14, 0x8"               \
  19                               : "=r" (__ret)                            \
  20                               :  "r"(_scno) ASM_ARGS_##nr               \
  21                               : __SYSCALL_CLOBBERS );                   \
  22                 __ret;                                                  \
  23         }) \
  24 )
  25 #define INTERNAL_SYSCALL_ERROR_P(val, err)              \
  26         ((unsigned int)(val) >= 0xfffff001U)
  27
  28 #define LOAD_ARGS_0() do { } while(0)
  29 #define ASM_ARGS_0
  30 #define LOAD_ARGS_1(a1)                         \
  31         register int _a1 __asm__("r5") = (int)(a1);     \
  32         LOAD_ARGS_0()
  33 #define ASM_ARGS_1      ASM_ARGS_0, "r"(_a1)
  34 #define LOAD_ARGS_2(a1, a2)                             \
  35         register int _a2 __asm__("r6") = (int)(a2);     \
  36         LOAD_ARGS_1(a1)
  37 #define ASM_ARGS_2      ASM_ARGS_1, "r"(_a2)
  38 #define LOAD_ARGS_3(a1, a2, a3)                         \
  39         register int _a3 __asm__("r7") = (int)(a3);     \
  40         LOAD_ARGS_2(a1, a2)
  41 #define ASM_ARGS_3      ASM_ARGS_2, "r"(_a3)
  42 #define LOAD_ARGS_4(a1, a2, a3, a4)                     \
  43         register int _a4 __asm__("r8") = (int)(a4);     \
  44         LOAD_ARGS_3(a1, a2, a3)
  45 #define ASM_ARGS_4      ASM_ARGS_3, "r"(_a4)
  46 #define LOAD_ARGS_5(a1, a2, a3, a4, a5)                 \
  47         register int _a5 __asm__("r9") = (int)(a5);     \
  48         LOAD_ARGS_4(a1, a2, a3, a4)
  49 #define ASM_ARGS_5      ASM_ARGS_4, "r"(_a5)
  50 #define LOAD_ARGS_6(a1, a2, a3, a4, a5, a6)             \
  51         register int _a6 __asm__("r10") = (int)(a6);    \
  52         LOAD_ARGS_5(a1, a2, a3, a4, a5)
  53 #define ASM_ARGS_6      ASM_ARGS_5, "r"(_a6)
  54
  55 #define __SYSCALL_CLOBBERS "r4", "r14", "cc", "memory"
  56
  57 #endif /* __ASSEMBLER__ */
  58 #endif /* _BITS_SYSCALLS_H */