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lowlevel-atomic.h

lowlevel-atomic.h 1.8 KB
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  1. /* Copyright (C) 2003, 2004, 2008 Free Software Foundation, Inc.
    2. 

  2.    This file is part of the GNU C Library.
    3. 

  3. 

  4.    The GNU C Library is free software; you can redistribute it and/or
    5. 

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

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

  7.    version 2.1 of the License, or (at your option) any later version.
    8. 

  8. 

  9.    The GNU C Library is distributed in the hope that it will be useful,
    10. 

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

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

  12.    Lesser General Public License for more details.
    13. 

  13. 

  14.    You should have received a copy of the GNU Lesser General Public
    15. 

  15.    License along with the GNU C Library; if not, see
    16. 

  16.    <http://www.gnu.org/licenses/>.  */
    17. 

  17. 

  18. #ifdef __ASSEMBLER__
    19. 

  19. 

  20. #define _IMP1 #1
    21. 

  21. #define _IMM1 #-1
    22. 

  22. #define _IMM4 #-4
    23. 

  23. #define _IMM6 #-6
    24. 

  24. #define _IMM8 #-8
    25. 

  25. 

  26. #define	INC(mem, reg) \
    27. 

  27. 	.align	2; \
    28. 

  28. 	mova	99f, r0; \
    29. 

  29. 	mov	r15, r1; \
    30. 

  30. 	mov	_IMM6, r15; \
    31. 

  31. 98:	mov.l	mem, reg; \
    32. 

  32. 	add	_IMP1, reg; \
    33. 

  33. 	mov.l	reg, mem; \
    34. 

  34. 99:	mov	r1, r15
    35. 

  35. 

  36. #define	DEC(mem, reg) \
    37. 

  37. 	.align	2; \
    38. 

  38. 	mova	99f, r0; \
    39. 

  39. 	mov	r15, r1; \
    40. 

  40. 	mov	_IMM6, r15; \
    41. 

  41. 98:	mov.l	mem, reg; \
    42. 

  42. 	add	_IMM1, reg; \
    43. 

  43. 	mov.l	reg, mem; \
    44. 

  44. 99:	mov	r1, r15
    45. 

  45. 

  46. #define	XADD(reg, mem, old, tmp) \
    47. 

  47. 	.align	2; \
    48. 

  48. 	mova	99f, r0; \
    49. 

  49. 	nop; \
    50. 

  50. 	mov	r15, r1; \
    51. 

  51. 	mov	_IMM8, r15; \
    52. 

  52. 98:	mov.l	mem, old; \
    53. 

  53. 	mov	reg, tmp; \
    54. 

  54. 	add	old, tmp; \
    55. 

  55. 	mov.l	tmp, mem; \
    56. 

  56. 99:	mov	r1, r15
    57. 

  57. 

  58. #define	XCHG(reg, mem, old) \
    59. 

  59. 	.align	2; \
    60. 

  60. 	mova	99f, r0; \
    61. 

  61. 	nop; \
    62. 

  62. 	mov	r15, r1; \
    63. 

  63. 	mov	_IMM4, r15; \
    64. 

  64. 98:	mov.l	mem, old; \
    65. 

  65. 	mov.l	reg, mem; \
    66. 

  66. 99:	mov	r1, r15
    67. 

  67. 

  68. #define	CMPXCHG(reg, mem, new, old) \
    69. 

  69. 	.align	2; \
    70. 

  70. 	mova	99f, r0; \
    71. 

  71. 	nop; \
    72. 

  72. 	mov	r15, r1; \
    73. 

  73. 	mov	_IMM8, r15; \
    74. 

  74. 98:	mov.l	mem, old; \
    75. 

  75. 	cmp/eq	old, reg; \
    76. 

  76. 	bf	99f; \
    77. 

  77. 	mov.l	new, mem; \
    78. 

  78. 99:	mov	r1, r15
    79. 

  79. 

  80. #endif  /* __ASSEMBLER__ */
    81.