ppc_setjmp.S 2.6 KB

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  1. /* setjmp for PowerPC.
  2. Copyright (C) 1995, 1996, 1997, 1999, 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. #include <ppc_asm.tmpl>
  17. # define JB_GPR1 0 /* Also known as the stack pointer */
  18. # define JB_GPR2 1
  19. # define JB_LR 2 /* The address we will return to */
  20. # define JB_GPRS 3 /* GPRs 14 through 31 are saved, 18 in total */
  21. # define JB_CR 21 /* Condition code registers. */
  22. # define JB_FPRS 22 /* FPRs 14 through 31 are saved, 18*2 words total */
  23. # define JB_SIZE (58*4)
  24. #define FP(x...) x
  25. .globl setctxsp;
  26. setctxsp:
  27. mr r1, r3
  28. blr
  29. .globl ppc_setjmp;
  30. ppc_setjmp:
  31. stw r1,(JB_GPR1*4)(3)
  32. mflr r0
  33. stw r2,(JB_GPR2*4)(3)
  34. stw r14,((JB_GPRS+0)*4)(3)
  35. FP( stfd 14,((JB_FPRS+0*2)*4)(3))
  36. stw r0,(JB_LR*4)(3)
  37. stw r15,((JB_GPRS+1)*4)(3)
  38. FP( stfd 15,((JB_FPRS+1*2)*4)(3))
  39. mfcr r0
  40. stw r16,((JB_GPRS+2)*4)(3)
  41. FP( stfd 16,((JB_FPRS+2*2)*4)(3))
  42. stw r0,(JB_CR*4)(3)
  43. stw r17,((JB_GPRS+3)*4)(3)
  44. FP( stfd 17,((JB_FPRS+3*2)*4)(3))
  45. stw r18,((JB_GPRS+4)*4)(3)
  46. FP( stfd 18,((JB_FPRS+4*2)*4)(3))
  47. stw r19,((JB_GPRS+5)*4)(3)
  48. FP( stfd 19,((JB_FPRS+5*2)*4)(3))
  49. stw r20,((JB_GPRS+6)*4)(3)
  50. FP( stfd 20,((JB_FPRS+6*2)*4)(3))
  51. stw r21,((JB_GPRS+7)*4)(3)
  52. FP( stfd 21,((JB_FPRS+7*2)*4)(3))
  53. stw r22,((JB_GPRS+8)*4)(3)
  54. FP( stfd 22,((JB_FPRS+8*2)*4)(3))
  55. stw r23,((JB_GPRS+9)*4)(3)
  56. FP( stfd 23,((JB_FPRS+9*2)*4)(3))
  57. stw r24,((JB_GPRS+10)*4)(3)
  58. FP( stfd 24,((JB_FPRS+10*2)*4)(3))
  59. stw r25,((JB_GPRS+11)*4)(3)
  60. FP( stfd 25,((JB_FPRS+11*2)*4)(3))
  61. stw r26,((JB_GPRS+12)*4)(3)
  62. FP( stfd 26,((JB_FPRS+12*2)*4)(3))
  63. stw r27,((JB_GPRS+13)*4)(3)
  64. FP( stfd 27,((JB_FPRS+13*2)*4)(3))
  65. stw r28,((JB_GPRS+14)*4)(3)
  66. FP( stfd 28,((JB_FPRS+14*2)*4)(3))
  67. stw r29,((JB_GPRS+15)*4)(3)
  68. FP( stfd 29,((JB_FPRS+15*2)*4)(3))
  69. stw r30,((JB_GPRS+16)*4)(3)
  70. FP( stfd 30,((JB_FPRS+16*2)*4)(3))
  71. stw r31,((JB_GPRS+17)*4)(3)
  72. FP( stfd 31,((JB_FPRS+17*2)*4)(3))
  73. li 3, 0
  74. blr