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ppc_save_regs.S

ppc_save_regs.S 2.1 KB
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  1. /*
    2. 

  2.  * Copyright (C) 1996 Paul Mackerras.
    3. 

  3.  *
    4. 

  4.  *      This program is free software; you can redistribute it and/or
    5. 

  5.  *      modify it under the terms of the GNU General Public License
    6. 

  6.  *      as published by the Free Software Foundation; either version
    7. 

  7.  *      2 of the License, or (at your option) any later version.
    8. 

  8.  *
    9. 

  9.  * NOTE: assert(sizeof(buf) > 23 * sizeof(long))
    10. 

  10.  */
    11. 

  11. #include <asm/processor.h>
    12. 

  12. #include <asm/ppc_asm.h>
    13. 

  13. #include <asm/asm-offsets.h>
    14. 

  14. #include <asm/ptrace.h>
    15. 

  15. 

  16. /*
    17. 

  17.  * Grab the register values as they are now.
    18. 

  18.  * This won't do a particularly good job because we really
    19. 

  19.  * want our caller's caller's registers, and our caller has
    20. 

  20.  * already executed its prologue.
    21. 

  21.  * ToDo: We could reach back into the caller's save area to do
    22. 

  22.  * a better job of representing the caller's state (note that
    23. 

  23.  * that will be different for 32-bit and 64-bit, because of the
    24. 

  24.  * different ABIs, though).
    25. 

  25.  */
    26. 

  26. _GLOBAL(ppc_save_regs)
    27. 

  27. 	PPC_STL	r0,0*SZL(r3)
    28. 

  28. 	PPC_STL	r2,2*SZL(r3)
    29. 

  29. 	PPC_STL	r3,3*SZL(r3)
    30. 

  30. 	PPC_STL	r4,4*SZL(r3)
    31. 

  31. 	PPC_STL	r5,5*SZL(r3)
    32. 

  32. 	PPC_STL	r6,6*SZL(r3)
    33. 

  33. 	PPC_STL	r7,7*SZL(r3)
    34. 

  34. 	PPC_STL	r8,8*SZL(r3)
    35. 

  35. 	PPC_STL	r9,9*SZL(r3)
    36. 

  36. 	PPC_STL	r10,10*SZL(r3)
    37. 

  37. 	PPC_STL	r11,11*SZL(r3)
    38. 

  38. 	PPC_STL	r12,12*SZL(r3)
    39. 

  39. 	PPC_STL	r13,13*SZL(r3)
    40. 

  40. 	PPC_STL	r14,14*SZL(r3)
    41. 

  41. 	PPC_STL	r15,15*SZL(r3)
    42. 

  42. 	PPC_STL	r16,16*SZL(r3)
    43. 

  43. 	PPC_STL	r17,17*SZL(r3)
    44. 

  44. 	PPC_STL	r18,18*SZL(r3)
    45. 

  45. 	PPC_STL	r19,19*SZL(r3)
    46. 

  46. 	PPC_STL	r20,20*SZL(r3)
    47. 

  47. 	PPC_STL	r21,21*SZL(r3)
    48. 

  48. 	PPC_STL	r22,22*SZL(r3)
    49. 

  49. 	PPC_STL	r23,23*SZL(r3)
    50. 

  50. 	PPC_STL	r24,24*SZL(r3)
    51. 

  51. 	PPC_STL	r25,25*SZL(r3)
    52. 

  52. 	PPC_STL	r26,26*SZL(r3)
    53. 

  53. 	PPC_STL	r27,27*SZL(r3)
    54. 

  54. 	PPC_STL	r28,28*SZL(r3)
    55. 

  55. 	PPC_STL	r29,29*SZL(r3)
    56. 

  56. 	PPC_STL	r30,30*SZL(r3)
    57. 

  57. 	PPC_STL	r31,31*SZL(r3)
    58. 

  58. 	/* go up one stack frame for SP */
    59. 

  59. 	PPC_LL	r4,0(r1)
    60. 

  60. 	PPC_STL	r4,1*SZL(r3)
    61. 

  61. 	/* get caller's LR */
    62. 

  62. 	PPC_LL	r0,LRSAVE(r4)
    63. 

  63. 	PPC_STL	r0,_NIP-STACK_FRAME_OVERHEAD(r3)
    64. 

  64. 	PPC_STL	r0,_LINK-STACK_FRAME_OVERHEAD(r3)
    65. 

  65. 	mfmsr	r0
    66. 

  66. 	PPC_STL	r0,_MSR-STACK_FRAME_OVERHEAD(r3)
    67. 

  67. 	mfctr	r0
    68. 

  68. 	PPC_STL	r0,_CTR-STACK_FRAME_OVERHEAD(r3)
    69. 

  69. 	mfxer	r0
    70. 

  70. 	PPC_STL	r0,_XER-STACK_FRAME_OVERHEAD(r3)
    71. 

  71. 	mfcr	r0
    72. 

  72. 	PPC_STL	r0,_CCR-STACK_FRAME_OVERHEAD(r3)
    73. 

  73. 	li	r0,0
    74. 

  74. 	PPC_STL	r0,_TRAP-STACK_FRAME_OVERHEAD(r3)
    75. 

  75. 	blr
    76.