syscalls.h 1.7 KB

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