bsd-setjmp.S 1.4 KB

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  1. /* BSD `setjmp' entry point to `sigsetjmp (..., 1)'. MIPS version.
  2. Copyright (C) 1996, 1997, 2000 Free Software Foundation, Inc.
  3. This file is part of the GNU C Library.
  4. The GNU C Library is free software; you can redistribute it and/or
  5. modify it under the terms of the GNU Lesser General Public
  6. License as published by the Free Software Foundation; either
  7. version 2.1 of the License, or (at your option) any later version.
  8. The GNU C Library is distributed in the hope that it will be useful,
  9. but WITHOUT ANY WARRANTY; without even the implied warranty of
  10. MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
  11. Lesser General Public License for more details.
  12. You should have received a copy of the GNU Lesser General Public
  13. License along with the GNU C Library; if not, write to the Free
  14. Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
  15. 02111-1307 USA. */
  16. /* This just does a tail-call to `__sigsetjmp (ARG, 1)'.
  17. We cannot do it in C because it must be a tail-call, so frame-unwinding
  18. in setjmp doesn't clobber the state restored by longjmp. */
  19. #include <sys/regdef.h>
  20. #ifdef __PIC__
  21. .option pic2
  22. #endif
  23. .text
  24. .global setjmp
  25. .align 2;
  26. .ent setjmp,0;
  27. .type setjmp,@function
  28. setjmp:
  29. #ifdef __PIC__
  30. .set noreorder
  31. .cpload t9
  32. .set reorder
  33. la t9, __sigsetjmp
  34. #endif
  35. li a1, 1 /* Pass a second argument of one. */
  36. #ifdef __PIC__
  37. jr t9
  38. #else
  39. j __sigsetjmp
  40. #endif
  41. .end setjmp