sysdep.S 1.5 KB

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  1. /* Copyright (C) 1996-2019 Free Software Foundation, Inc.
  2. This file is part of the GNU C Library.
  3. The GNU C Library is free software; you can redistribute it and/or
  4. modify it under the terms of the GNU Lesser General Public
  5. License as published by the Free Software Foundation; either
  6. version 2.1 of the License, or (at your option) any later version.
  7. The GNU C Library is distributed in the hope that it will be useful,
  8. but WITHOUT ANY WARRANTY; without even the implied warranty of
  9. MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
  10. Lesser General Public License for more details.
  11. You should have received a copy of the GNU Lesser General Public
  12. License along with the GNU C Library. If not, see
  13. <http://www.gnu.org/licenses/>. */
  14. #include <sysdep.h>
  15. /* The following code is only used in the shared library when we
  16. compile the reentrant version. Otherwise each system call defines
  17. each own version. */
  18. #ifndef PIC
  19. /* The syscall stubs jump here when they detect an error. */
  20. #undef CALL_MCOUNT
  21. #define CALL_MCOUNT /* Don't insert the profiling call, it clobbers %d0. */
  22. .text
  23. ENTRY (__syscall_error)
  24. neg.l %d0
  25. #ifndef _LIBC_REENTRANT
  26. move.l %d0, errno
  27. #else
  28. move.l %d0, -(%sp)
  29. cfi_adjust_cfa_offset (4)
  30. jbsr __errno_location
  31. move.l (%sp)+, (%a0)
  32. cfi_adjust_cfa_offset (-4)
  33. #endif
  34. move.l #-1, %d0
  35. /* Copy return value to %a0 for syscalls that are declared to
  36. return a pointer. */
  37. move.l %d0, %a0
  38. rts
  39. END (__syscall_error)
  40. #endif /* PIC */