_mmap.c 908 B

123456789101112131415161718192021222324
  1. #include <unistd.h>
  2. #include <sys/mman.h>
  3. #define _syscall6(type,name,type1,arg1,type2,arg2,type3,arg3,type4,arg4,type5,arg5, type6,arg6) \
  4. type name (type1 arg1, type2 arg2, type3 arg3, type4 arg4, type5 arg5, type6 arg6) \
  5. { \
  6. register long __sc3 __asm__ ("r3") = __NR_##name; \
  7. register long __sc4 __asm__ ("r4") = (long) arg1; \
  8. register long __sc5 __asm__ ("r5") = (long) arg2; \
  9. register long __sc6 __asm__ ("r6") = (long) arg3; \
  10. register long __sc7 __asm__ ("r7") = (long) arg4; \
  11. register long __sc0 __asm__ ("r0") = (long) arg5; \
  12. register long __sc1 __asm__ ("r1") = (long) arg6; \
  13. __asm__ __volatile__ ("trapa #0x15" \
  14. : "=z" (__sc0) \
  15. : "0" (__sc0), "r" (__sc4), "r" (__sc5), "r" (__sc6), "r" (__sc7), \
  16. "r" (__sc3), "r" (__sc1) \
  17. : "memory" ); \
  18. __syscall_return(type,__sc0); \
  19. }
  20. _syscall6(__ptr_t, mmap, __ptr_t, addr, size_t, len, int, prot, int, flags, int, fd, __off_t, offset);