/apps/rmgr/include/flux/x86/pc/debug.h

http://github.com/l4ka/hazelnut · C Header · 69 lines · 29 code · 17 blank · 23 comment · 1 complexity · 20c595b1bec854839b9d9d14893edb7c MD5 · raw file 

    

  1. /* 
    2. 

  2.  * Copyright (c) 1995-1994 The University of Utah and
    3. 

  3.  * the Computer Systems Laboratory at the University of Utah (CSL).
    4. 

  4.  * All rights reserved.
    5. 

  5.  *
    6. 

  6.  * Permission to use, copy, modify and distribute this software is hereby
    7. 

  7.  * granted provided that (1) source code retains these copyright, permission,
    8. 

  8.  * and disclaimer notices, and (2) redistributions including binaries
    9. 

  9.  * reproduce the notices in supporting documentation, and (3) all advertising
    10. 

  10.  * materials mentioning features or use of this software display the following
    11. 

  11.  * acknowledgement: ``This product includes software developed by the
    12. 

  12.  * Computer Systems Laboratory at the University of Utah.''
    13. 

  13.  *
    14. 

  14.  * THE UNIVERSITY OF UTAH AND CSL ALLOW FREE USE OF THIS SOFTWARE IN ITS "AS
    15. 

  15.  * IS" CONDITION.  THE UNIVERSITY OF UTAH AND CSL DISCLAIM ANY LIABILITY OF
    16. 

  16.  * ANY KIND FOR ANY DAMAGES WHATSOEVER RESULTING FROM THE USE OF THIS SOFTWARE.
    17. 

  17.  *
    18. 

  18.  * CSL requests users of this software to return to csl-dist@cs.utah.edu any
    19. 

  19.  * improvements that they make and grant CSL redistribution rights.
    20. 

  20.  */
    21. 

  21. #ifndef _KUKM_I386_PC_DEBUG_H_
    22. 

  22. #define _KUKM_I386_PC_DEBUG_H_
    23. 

  23. 

  24. #ifdef ASSEMBLER
    25. 

  25. #ifdef DEBUG
    26. 

  26. 

  27. 

  28. /* Poke a character directly onto the VGA text display,
    29. 

  29.    as a very quick, mostly-reliable status indicator.
    30. 

  30.    Assumes ss is a kernel data segment register.  */
    31. 

  31. #define POKE_STATUS(char,scratch)		\
    32. 

  32. 	ss/*XXX gas bug */			;\
    33. 

  33. 	movl	%ss:_phys_mem_va,scratch	;\
    34. 

  34. 	addl	$0xb8000+80*2*13+40*2,scratch	;\
    35. 

  35. 	movb	char,%ss:(scratch)		;\
    36. 

  36. 	movb	$0xf0,%ss:1(scratch)
    37. 

  37. 

  38. 

  39. #else !DEBUG
    40. 

  40. 

  41. #define POKE_STATUS(char,scratch)
    42. 

  42. 

  43. #endif !DEBUG
    44. 

  44. #else !ASSEMBLER
    45. 

  45. #ifdef DEBUG
    46. 

  46. 

  47. #include <mach/machine/vm_types.h>
    48. 

  48. 

  49. 

  50. #define POKE_STATUS(string)						\
    51. 

  51. 	({	unsigned char *s = (string);				\
    52. 

  52. 		extern vm_offset_t phys_mem_va;				\
    53. 

  53. 		short *d = (short*)(phys_mem_va+0xb8000+80*2*13+40*2);	\
    54. 

  54. 		while (*s) { (*d++) = 0x3000 | (*s++); }		\
    55. 

  55. 		*d = ' ';						\
    56. 

  56. 	})
    57. 

  57. 

  58. 

  59. #else !DEBUG
    60. 

  60. 

  61. #define POKE_STATUS(char)
    62. 

  62. 

  63. #endif !DEBUG
    64. 

  64. #endif !ASSEMBLER
    65. 

  65. 

  66. 

  67. #include_next "debug.h"
    68. 

  68. 

  69. #endif _KUKM_I386_PC_DEBUG_H_
    70.