bsd-_setjmp.S 1.6 KB

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  1. /* BSD `_setjmp' entry point to `sigsetjmp (..., 0)'. ARM version.
  2. Copyright (C) 1997, 1998 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. #include <bits/arm_asm.h>
  17. /* This just does a tail-call to `__sigsetjmp (ARG, 0)'.
  18. We cannot do it in C because it must be a tail-call, so frame-unwinding
  19. in setjmp doesn't clobber the state restored by longjmp. */
  20. .global _setjmp
  21. .type _setjmp,%function
  22. .align 2
  23. #if defined(THUMB1_ONLY)
  24. .thumb_func
  25. _setjmp:
  26. mov r1, #0
  27. #ifdef __PIC__
  28. ldr r3, .L_GOT
  29. adr r2, .L_GOT
  30. add r3, r2, r3
  31. ldr r2, .L_GOT+4 /* __sigsetjmp */
  32. ldr r2, [r2, r3]
  33. bx r2
  34. .align 2
  35. .L_GOT:
  36. .word _GLOBAL_OFFSET_TABLE_-.L_GOT
  37. .word __sigsetjmp(GOT)
  38. #else
  39. ldr r2, =__sigsetjmp
  40. bx r2
  41. .pool
  42. #endif
  43. #else
  44. _setjmp:
  45. mov r1, #0
  46. #ifdef __PIC__
  47. b __sigsetjmp(PLT)
  48. #else
  49. b __sigsetjmp
  50. #endif
  51. #endif
  52. .size _setjmp,.-_setjmp