setjmp_aux.c 4.9 KB

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  1. /* Copyright (C) 1996, 1997, 2000 Free Software Foundation, Inc.
  2. This file is part of the GNU C Library.
  3. Contributed by Brendan Kehoe (brendan@zen.org).
  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, see
  14. <http://www.gnu.org/licenses/>. */
  15. #include <features.h>
  16. #include <setjmp.h>
  17. #include <sgidefs.h>
  18. #include <sys/asm.h>
  19. /* This function is only called via the assembly language routine
  20. __sigsetjmp, which arranges to pass in the stack pointer and the frame
  21. pointer. We do things this way because it's difficult to reliably
  22. access them in C. */
  23. int
  24. #if _MIPS_SIM == _MIPS_SIM_ABI64
  25. __sigsetjmp_aux (jmp_buf env, int savemask, long sp, long fp)
  26. #else /* O32 || N32 */
  27. __sigsetjmp_aux (jmp_buf env, int savemask, int sp, int fp)
  28. #endif /* O32 || N32 */
  29. {
  30. #if defined __UCLIBC_HAS_FLOATS__ && ! defined __UCLIBC_HAS_SOFT_FLOAT__
  31. /* Store the floating point callee-saved registers... */
  32. #if _MIPS_SIM == _MIPS_SIM_ABI64
  33. __asm__ __volatile__ ("s.d $f24, %0" : : "m" (env[0].__jmpbuf[0].__fpregs[0]));
  34. __asm__ __volatile__ ("s.d $f25, %0" : : "m" (env[0].__jmpbuf[0].__fpregs[1]));
  35. __asm__ __volatile__ ("s.d $f26, %0" : : "m" (env[0].__jmpbuf[0].__fpregs[2]));
  36. __asm__ __volatile__ ("s.d $f27, %0" : : "m" (env[0].__jmpbuf[0].__fpregs[3]));
  37. __asm__ __volatile__ ("s.d $f28, %0" : : "m" (env[0].__jmpbuf[0].__fpregs[4]));
  38. __asm__ __volatile__ ("s.d $f29, %0" : : "m" (env[0].__jmpbuf[0].__fpregs[5]));
  39. __asm__ __volatile__ ("s.d $f30, %0" : : "m" (env[0].__jmpbuf[0].__fpregs[6]));
  40. __asm__ __volatile__ ("s.d $f31, %0" : : "m" (env[0].__jmpbuf[0].__fpregs[7]));
  41. #else /* O32 || N32 */
  42. __asm__ __volatile__ ("s.d $f20, %0" : : "m" (env[0].__jmpbuf[0].__fpregs[0]));
  43. __asm__ __volatile__ ("s.d $f22, %0" : : "m" (env[0].__jmpbuf[0].__fpregs[1]));
  44. __asm__ __volatile__ ("s.d $f24, %0" : : "m" (env[0].__jmpbuf[0].__fpregs[2]));
  45. __asm__ __volatile__ ("s.d $f26, %0" : : "m" (env[0].__jmpbuf[0].__fpregs[3]));
  46. __asm__ __volatile__ ("s.d $f28, %0" : : "m" (env[0].__jmpbuf[0].__fpregs[4]));
  47. __asm__ __volatile__ ("s.d $f30, %0" : : "m" (env[0].__jmpbuf[0].__fpregs[5]));
  48. #endif /* O32 || N32 */
  49. #endif
  50. /* .. and the PC; */
  51. #if _MIPS_SIM == _MIPS_SIM_ABI64
  52. __asm__ __volatile__ ("sd $31, %0" : : "m" (env[0].__jmpbuf[0].__pc));
  53. #else
  54. __asm__ __volatile__ ("sw $31, %0" : : "m" (env[0].__jmpbuf[0].__pc));
  55. #endif
  56. /* .. and the stack pointer; */
  57. env[0].__jmpbuf[0].__sp = (void *) sp;
  58. /* .. and the FP; it'll be in s8. */
  59. env[0].__jmpbuf[0].__fp = (void *) fp;
  60. /* .. and the GP; */
  61. #if _MIPS_SIM == _MIPS_SIM_ABI64
  62. __asm__ __volatile__ ("sd $gp, %0" : : "m" (env[0].__jmpbuf[0].__gp));
  63. #else
  64. __asm__ __volatile__ ("sw $gp, %0" : : "m" (env[0].__jmpbuf[0].__gp));
  65. #endif
  66. /* .. and the callee-saved registers; */
  67. #if (_MIPS_SIM == _MIPS_SIM_ABI32)
  68. __asm__ __volatile__ ("sw $16, %0" : : "m" (env[0].__jmpbuf[0].__regs[0]));
  69. __asm__ __volatile__ ("sw $17, %0" : : "m" (env[0].__jmpbuf[0].__regs[1]));
  70. __asm__ __volatile__ ("sw $18, %0" : : "m" (env[0].__jmpbuf[0].__regs[2]));
  71. __asm__ __volatile__ ("sw $19, %0" : : "m" (env[0].__jmpbuf[0].__regs[3]));
  72. __asm__ __volatile__ ("sw $20, %0" : : "m" (env[0].__jmpbuf[0].__regs[4]));
  73. __asm__ __volatile__ ("sw $21, %0" : : "m" (env[0].__jmpbuf[0].__regs[5]));
  74. __asm__ __volatile__ ("sw $22, %0" : : "m" (env[0].__jmpbuf[0].__regs[6]));
  75. __asm__ __volatile__ ("sw $23, %0" : : "m" (env[0].__jmpbuf[0].__regs[7]));
  76. #else /* N32 || N64 */
  77. __asm__ __volatile__ ("sd $16, %0" : : "m" (env[0].__jmpbuf[0].__regs[0]));
  78. __asm__ __volatile__ ("sd $17, %0" : : "m" (env[0].__jmpbuf[0].__regs[1]));
  79. __asm__ __volatile__ ("sd $18, %0" : : "m" (env[0].__jmpbuf[0].__regs[2]));
  80. __asm__ __volatile__ ("sd $19, %0" : : "m" (env[0].__jmpbuf[0].__regs[3]));
  81. __asm__ __volatile__ ("sd $20, %0" : : "m" (env[0].__jmpbuf[0].__regs[4]));
  82. __asm__ __volatile__ ("sd $21, %0" : : "m" (env[0].__jmpbuf[0].__regs[5]));
  83. __asm__ __volatile__ ("sd $22, %0" : : "m" (env[0].__jmpbuf[0].__regs[6]));
  84. __asm__ __volatile__ ("sd $23, %0" : : "m" (env[0].__jmpbuf[0].__regs[7]));
  85. #endif /* N32 || N64 */
  86. #if defined __UCLIBC_HAS_FLOATS__ && ! defined __UCLIBC_HAS_SOFT_FLOAT__
  87. /* .. and finally get and reconstruct the floating point csr. */
  88. __asm__ ("cfc1 %0, $31" : "=r" (env[0].__jmpbuf[0].__fpc_csr));
  89. #endif
  90. /* Save the signal mask if requested. */
  91. return __sigjmp_save (env, savemask);
  92. }