pthread_spin_trylock.S 1.4 KB

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  1. /* Copyright (C) 2003-2026 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. <https://www.gnu.org/licenses/>. */
  14. #include <shlib-compat.h>
  15. #define _ERRNO_H 1
  16. #include <bits/errno.h>
  17. .text
  18. .align 4
  19. .globl __pthread_spin_trylock
  20. .ent __pthread_spin_trylock
  21. __pthread_spin_trylock:
  22. .frame $sp, 0, $26, 0
  23. .prologue 0
  24. 0: ldl_l $1, 0($16)
  25. lda $2, 1
  26. lda $0, EBUSY
  27. bne $1, 1f
  28. stl_c $2, 0($16)
  29. beq $2, 2f
  30. mb
  31. lda $0, 0
  32. 1: ret
  33. 2: br 0b
  34. .end __pthread_spin_trylock
  35. versioned_symbol (libc, __pthread_spin_trylock, pthread_spin_trylock,
  36. GLIBC_2_34)
  37. #if OTHER_SHLIB_COMPAT (libpthread, GLIBC_2_2, GLIBC_2_34)
  38. compat_symbol (libpthread, __pthread_spin_trylock, pthread_spin_trylock,
  39. GLIBC_2_2)
  40. #endif