8bde7f776c
- remove trailing white space, trailing empty lines, C++ comments, etc.
- split cmd_boot.c (separate cmd_bdinfo.c and cmd_load.c)
* Patches by Kenneth Johansson, 25 Jun 2003:
- major rework of command structure
(work done mostly by Michal Cendrowski and Joakim Kristiansen)
125 lines
3.1 KiB
C
125 lines
3.1 KiB
C
/*
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* Copyright 1999 Egbert Eich
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*
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* Permission to use, copy, modify, distribute, and sell this software and its
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* documentation for any purpose is hereby granted without fee, provided that
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* the above copyright notice appear in all copies and that both that
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* copyright notice and this permission notice appear in supporting
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* documentation, and that the name of the authors not be used in
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* advertising or publicity pertaining to distribution of the software without
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* specific, written prior permission. The authors makes no representations
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* about the suitability of this software for any purpose. It is provided
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* "as is" without express or implied warranty.
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*
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* THE AUTHORS DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE,
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* INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN NO
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* EVENT SHALL THE AUTHORS BE LIABLE FOR ANY SPECIAL, INDIRECT OR
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* CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE,
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* DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER
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* TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR
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* PERFORMANCE OF THIS SOFTWARE.
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*/
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#include "debug.h"
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#include "v86bios.h"
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#include "x86emu.h"
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#ifdef __alpha__
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void* vram_map = 0;
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int sparse_shift = 5;
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#define mem_barrier() __asm__ __volatile__("mb" : : : "memory")
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#define vuip volatile unsigned int *
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CARD8
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mem_rb(CARD32 addr)
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{
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unsigned long result, shift;
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#if 1
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if (addr >= 0xA0000 && addr <= 0xBFFFF) {
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addr -= 0xA0000;
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shift = (addr & 0x3) * 8;
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result = *(vuip) ((unsigned long)vram_map + (addr << sparse_shift));
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result >>= shift;
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return 0xffUL & result;
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} else
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#endif
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return rdb(addr);
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}
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CARD16
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mem_rw(CARD32 addr)
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{
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unsigned long result, shift;
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#if 1
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if (addr >= 0xA0000 && addr <= 0xBFFFF) {
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addr -= 0xA0000;
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shift = (addr & 0x2) * 8;
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result = *(vuip)((unsigned long)vram_map+(addr<<sparse_shift)
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+(1<<(sparse_shift-2)));
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result >>= shift;
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return 0xffffUL & result;
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} else
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#endif
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return rdw(addr);
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}
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CARD32
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mem_rl(CARD32 addr)
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{
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unsigned long result;
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#if 1
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if (addr >= 0xA0000 && addr <= 0xBFFFF) {
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addr -= 0xA0000;
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result = *(vuip)((unsigned long)vram_map+(addr<<sparse_shift)+(3<<(sparse_shift-2)));
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return result;
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} else
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#endif
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return rdl(addr);
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}
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void
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mem_wb(CARD32 addr, CARD8 val)
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{
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unsigned int b = val & 0xffU;
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#if 1
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if (addr >= 0xA0000 && addr <= 0xBFFFF) {
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addr -= 0xA0000;
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*(vuip) ((unsigned long)vram_map + (addr << sparse_shift)) = b * 0x01010101;
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mem_barrier();
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} else
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#endif
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wrb(addr,val);
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}
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void
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mem_ww(CARD32 addr, CARD16 val)
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{
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unsigned int w = val & 0xffffU;
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#if 1
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if (addr >= 0xA0000 && addr <= 0xBFFFF) {
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addr -= 0xA0000;
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*(vuip)((unsigned long)vram_map+(addr<<sparse_shift)
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+(1<<(sparse_shift-2))) = w * 0x00010001;
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mem_barrier();
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} else
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#endif
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wrw(addr,val);
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}
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void
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mem_wl(CARD32 addr, CARD32 val)
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{
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#if 1
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if (addr >= 0xA0000 && addr <= 0xBFFFF) {
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addr -= 0xA0000;
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*(vuip)((unsigned long)vram_map+(addr<<sparse_shift)
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+(3<<(sparse_shift-2))) = val;
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mem_barrier();
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} else
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#endif
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wrl(addr,val);
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}
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#endif
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