arch/m68k-amiga/c/patches.c

   1 /*
   2     Copyright © 1995-2014, The AROS Development Team. All rights reserved.
   3     $Id$
   4 */
   5
   6 #include <aros/debug.h>
   7 #include <aros/libcall.h>
   8 #include <aros/symbolsets.h>
   9
  10 #include <proto/exec.h>
  11 #include <proto/dos.h>
  12
  13
  14 extern UBYTE copymem_040, copymeme_040;
  15 extern UBYTE copymemquick_040, copymemquicke_040;
  16 extern UBYTE copymem_060, copymeme_060;
  17 extern UBYTE copymemquick_060, copymemquicke_060;
  18
  19 static void patch_function(UBYTE *start, UBYTE *end, void *library, WORD lvo)
  20 {
  21     UBYTE *mem;
  22     ULONG size;
  23
  24     size = end - start;
  25     mem = AllocMem(size, MEMF_PUBLIC);
  26     if (!mem)
  27         return;
  28     CopyMem(start, mem, size);
  29     CacheClearE(mem, size, CACRF_ClearI|CACRF_ClearD);
  30     SetFunction(library, lvo * -LIB_VECTSIZE, mem);
  31 }
  32
  33 void patches(BOOL quiet, ULONG flags)
  34 {
  35     if (!(flags & 1))
  36         return;
  37     if (SysBase->AttnFlags & AFF_68060) {
  38         patch_function(&copymem_060, &copymeme_060, SysBase, 104);
  39         patch_function(&copymemquick_060, &copymemquicke_060, SysBase, 105);
  40         if (!quiet)
  41             Printf("Replaced CopyMem() and CopyMemQuick() with 68060 optimized versions.\n");
  42     } else if (SysBase->AttnFlags & AFF_68040) {
  43         patch_function(&copymem_040, &copymeme_040, SysBase, 104);
  44         patch_function(&copymemquick_040, &copymemquicke_040, SysBase, 105);
  45         if (!quiet)
  46             Printf("Replaced CopyMem() and CopyMemQuick() with 68040 optimized versions.\n");
  47     }
  48 }