arch/x86_64-pc/kernel/kernel_debug.c

   1 /*
   2     Copyright � 1995-2017, The AROS Development Team. All rights reserved.
   3     $Id$
   4 */
   5
   6 #include <bootconsole.h>
   7
   8 #include "kernel_base.h"
   9 #include "kernel_intern.h"
  10 #include "kernel_debug.h"
  11
  12 #if defined(__AROSEXEC_SMP__)
  13 volatile ULONG   safedebug = 1;
  14 #endif
  15
  16 int krnPutC(int c, struct KernelBase *KernelBase)
  17 {
  18     unsigned long flags;
  19
  20     __save_flags(flags);
  21
  22     /*
  23      * stegerg: Don't use Disable/Enable, because we want  interrupt enabled flag
  24      * to stay the same as it was before the Disable() call
  25      */
  26     __cli();
  27
  28     /*
  29      * If we got 0x03, this means graphics driver wants to take over the screen.
  30      * If VESA hack is activated, it will use only upper half of the screen
  31      * because y resolution was adjusted.
  32      * In our turn, we need to switch over to lower half.
  33      * VESA hack is supported only on graphical console of course. And do not
  34      * expect it to work with native mode video driver. :)
  35      */
  36     if ((c == 0x03) && (scr_Type == SCR_GFX) && __KernBootPrivate->debug_framebuffer)
  37     {
  38         /* Reinitialize boot console with decreased height */
  39         scr_FrameBuffer = __KernBootPrivate->debug_framebuffer;
  40         fb_Resize(__KernBootPrivate->debug_y_resolution);
  41     }
  42     else
  43         con_Putc(c);
  44
  45     /*
  46      * Interrupt flag is stored in flags - if it was enabled before,
  47      * it will be renabled when the flags are restored
  48      */
  49     __restore_flags(flags);
  50
  51     return 1;
  52 }