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Annotation of Gnu-Mach/i386/pc/debug.h, revision 1.1.1.1

1.1       root        1: /* 
                      2:  * Copyright (c) 1995-1994 The University of Utah and
                      3:  * the Computer Systems Laboratory at the University of Utah (CSL).
                      4:  * All rights reserved.
                      5:  *
                      6:  * Permission to use, copy, modify and distribute this software is hereby
                      7:  * granted provided that (1) source code retains these copyright, permission,
                      8:  * and disclaimer notices, and (2) redistributions including binaries
                      9:  * reproduce the notices in supporting documentation, and (3) all advertising
                     10:  * materials mentioning features or use of this software display the following
                     11:  * acknowledgement: ``This product includes software developed by the
                     12:  * Computer Systems Laboratory at the University of Utah.''
                     13:  *
                     14:  * THE UNIVERSITY OF UTAH AND CSL ALLOW FREE USE OF THIS SOFTWARE IN ITS "AS
                     15:  * IS" CONDITION.  THE UNIVERSITY OF UTAH AND CSL DISCLAIM ANY LIABILITY OF
                     16:  * ANY KIND FOR ANY DAMAGES WHATSOEVER RESULTING FROM THE USE OF THIS SOFTWARE.
                     17:  *
                     18:  * CSL requests users of this software to return to [email protected] any
                     19:  * improvements that they make and grant CSL redistribution rights.
                     20:  *
                     21:  *      Author: Bryan Ford, University of Utah CSL
                     22:  */
                     23: #ifndef _KUKM_I386_PC_DEBUG_H_
                     24: #define _KUKM_I386_PC_DEBUG_H_
                     25: 
                     26: #ifdef ASSEMBLER
                     27: #ifdef DEBUG
                     28: 
                     29: 
                     30: /* Poke a character directly onto the VGA text display,
                     31:    as a very quick, mostly-reliable status indicator.
                     32:    Assumes ss is a kernel data segment register.  */
                     33: #define POKE_STATUS(char,scratch)              \
                     34:        ss/*XXX gas bug */                      ;\
                     35:        movl    %ss:_phys_mem_va,scratch        ;\
                     36:        addl    $0xb8000+80*2*13+40*2,scratch   ;\
                     37:        movb    char,%ss:(scratch)              ;\
                     38:        movb    $0xf0,%ss:1(scratch)
                     39: 
                     40: 
                     41: #else !DEBUG
                     42: 
                     43: #define POKE_STATUS(char,scratch)
                     44: 
                     45: #endif !DEBUG
                     46: #else !ASSEMBLER
                     47: #ifdef DEBUG
                     48: 
                     49: #include <mach/machine/vm_types.h>
                     50: 
                     51: 
                     52: #define POKE_STATUS(string)                                            \
                     53:        ({      unsigned char *s = (string);                            \
                     54:                extern vm_offset_t phys_mem_va;                         \
                     55:                short *d = (short*)(phys_mem_va+0xb8000+80*2*13+40*2);  \
                     56:                while (*s) { (*d++) = 0x3000 | (*s++); }                \
                     57:                *d = ' ';                                               \
                     58:        })
                     59: 
                     60: 
                     61: #else !DEBUG
                     62: 
                     63: #define POKE_STATUS(char)
                     64: 
                     65: #endif !DEBUG
                     66: #endif !ASSEMBLER
                     67: 
                     68: 
                     69: #include_next "debug.h"
                     70: 
                     71: #endif _KUKM_I386_PC_DEBUG_H_

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