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machine-gmon.h

machine-gmon.h 2.2 KB
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  1. /* Machine-dependent definitions for profiling support.  SH version.
    2. 

  2.  *
    3. 

  3.  * Copyright (C) 2003 Stefan Allius <allius@atecom.com>
    4. 

  4.  *
    5. 

  5.  * This program is free software; you can redistribute it and/or
    6. 

  6.  * modify it under the terms of the GNU Library General Public
    7. 

  7.  * License as published by the Free Software Foundation; either
    8. 

  8.  * version 2 of the License, or (at your option) any later version.
    9. 

  9.  *
    10. 

  10.  * This program is distributed in the hope that it will be useful,
    11. 

  11.  * but WITHOUT ANY WARRANTY; without even the implied warranty of
    12. 

  12.  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
    13. 

  13.  * Library General Public License for more details.
    14. 

  14.  *
    15. 

  15.  * You should have received a copy of the GNU Library General Public
    16. 

  16.  * License along with this program; if not, write to the Free
    17. 

  17.  * Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
    18. 

  18.  * 02111-1307 USA
    19. 

  19.  */
    20. 

  20. 

  21. #define mcount_internal __mcount_internal
    22. 

  22. 

  23. #define _MCOUNT_DECL(frompc, selfpc) \
    24. 

  24. static void __attribute__((unused)) mcount_internal (u_long frompc, u_long selfpc)
    25. 

  25. 

  26. /*
    27. 

  27.  * This mcount implementation expect the 'frompc' return address on
    28. 

  28.  * the stack and the 'selfpc' return address in register pr.
    29. 

  29.  *
    30. 

  30.  * Your compiler should include some stuff like this at each function
    31. 

  31.  * entry:
    32. 

  32.  *
    33. 

  33.  *	mov.l	1f,r1
    34. 

  34.  *	sts.l	pr,@-r15
    35. 

  35.  *	mova	2f,r0
    36. 

  36.  *	jmp	@r1
    37. 

  37.  *	 lds	r0,pr
    38. 

  38.  *	.align	2
    39. 

  39.  * 1:	.long	mcount
    40. 

  40.  * 2:	lds.l	@r15+,pr
    41. 

  41.  *
    42. 

  42.  * or for PIC:
    43. 

  43.  *
    44. 

  44.  *	mov.l	3f,r1
    45. 

  45.  *	mova	3f,r0
    46. 

  46.  *	add	r1,r0
    47. 

  47.  *	mov.l	1f,r1
    48. 

  48.  *	mov.l	@(r0,r1),r1
    49. 

  49.  *	sts.l	pr,@-r15
    50. 

  50.  *	mova	2f,r0
    51. 

  51.  *	jmp	@r1
    52. 

  52.  *	 lds	r0,pr
    53. 

  53.  *	.align	2
    54. 

  54.  * 1:	.long	mcount@GOT
    55. 

  55.  * 3:	.long	_GLOBAL_OFFSET_TABLE_
    56. 

  56.  * 2:	lds.l	@r15+,pr
    57. 

  57.  *
    58. 

  58.  *
    59. 

  59.  * This ABI will be supported by GCC version 3.3 or newer!
    60. 

  60.  */
    61. 

  61. #define MCOUNT asm(\
    62. 

  62. 	".align 4\n\t" \
    63. 

  63. 	".globl _mcount\n\t" \
    64. 

  64. 	".type _mcount,@function\n" \
    65. 

  65.         "_mcount:\n\t" \
    66. 

  66. 	"mov.l r4,  @-r15\n\t" \
    67. 

  67. 	"mov.l r5,  @-r15\n\t" \
    68. 

  68. 	"mov.l r6,  @-r15\n\t" \
    69. 

  69. 	"mov.l r7,  @-r15\n\t" \
    70. 

  70. 	"sts.l pr,  @-r15\n\t" \
    71. 

  71. 	"sts   pr, r5\n\t" \
    72. 

  72. 	"bsr __mcount_internal\n\t" \
    73. 

  73. 	" mov.l @(5*4,r15), r4\n\t" \
    74. 

  74. 	"lds.l @r15+, pr\n\t" \
    75. 

  75. 	"mov.l @r15+, r7\n\t" \
    76. 

  76. 	"mov.l @r15+, r6\n\t" \
    77. 

  77. 	"mov.l @r15+, r5\n\t" \
    78. 

  78. 	"rts\n\t" \
    79. 

  79. 	" mov.l @r15+, r4\n\t" \
    80. 

  80. 	".size _mcount,.-_mcount;\n\t" \
    81. 

  81. 	".weak mcount;\n\t" \
    82. 

  82. 	" mcount = _mcount;");
    83. 

  83.