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/*
* Copyright (c) 1995-1994 The University of Utah and
* the Computer Systems Laboratory at the University of Utah (CSL).
* All rights reserved.
*
* Permission to use, copy, modify and distribute this software is hereby
* granted provided that (1) source code retains these copyright, permission,
* and disclaimer notices, and (2) redistributions including binaries
* reproduce the notices in supporting documentation, and (3) all advertising
* materials mentioning features or use of this software display the following
* acknowledgement: ``This product includes software developed by the
* Computer Systems Laboratory at the University of Utah.''
*
* THE UNIVERSITY OF UTAH AND CSL ALLOW FREE USE OF THIS SOFTWARE IN ITS "AS
* IS" CONDITION. THE UNIVERSITY OF UTAH AND CSL DISCLAIM ANY LIABILITY OF
* ANY KIND FOR ANY DAMAGES WHATSOEVER RESULTING FROM THE USE OF THIS SOFTWARE.
*
* CSL requests users of this software to return to csl-dist@cs.utah.edu any
* improvements that they make and grant CSL redistribution rights.
*
* Author: Bryan Ford, University of Utah CSL
*/
#ifndef _KUKM_I386_PC_DEBUG_H_
#define _KUKM_I386_PC_DEBUG_H_
#ifdef ASSEMBLER
#ifdef DEBUG
/* Poke a character directly onto the VGA text display,
as a very quick, mostly-reliable status indicator.
Assumes ss is a kernel data segment register. */
#define POKE_STATUS(char,scratch) \
ss/*XXX gas bug */ ;\
movl %ss:_phys_mem_va,scratch ;\
addl $0xb8000+80*2*13+40*2,scratch ;\
movb char,%ss:(scratch) ;\
movb $0xf0,%ss:1(scratch)
#else !DEBUG
#define POKE_STATUS(char,scratch)
#endif !DEBUG
#else !ASSEMBLER
#ifdef DEBUG
#include <mach/machine/vm_types.h>
#define POKE_STATUS(string) \
({ unsigned char *s = (string); \
extern vm_offset_t phys_mem_va; \
short *d = (short*)(phys_mem_va+0xb8000+80*2*13+40*2); \
while (*s) { (*d++) = 0x3000 | (*s++); } \
*d = ' '; \
})
#else !DEBUG
#define POKE_STATUS(char)
#endif !DEBUG
#endif !ASSEMBLER
#include_next "debug.h"
#endif _KUKM_I386_PC_DEBUG_H_
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