3963a092ba
a binary link-kit. Make all non-optional options (pagers, procfs) standard, and update LINT to reflect new symtab requirements. NB: -Wtraditional will henceforth be forgotten. This editing pass was primarily intended to detect any constructions where the old code might have been relying on traditional C semantics or syntax. These were all fixed, and the result of fixing some of them means that -Wall is now a realistic possibility within a few weeks.
371 lines
7.6 KiB
C
371 lines
7.6 KiB
C
/*
|
|
* Mach Operating System
|
|
* Copyright (c) 1991,1990 Carnegie Mellon University
|
|
* All Rights Reserved.
|
|
*
|
|
* Permission to use, copy, modify and distribute this software and its
|
|
* documentation is hereby granted, provided that both the copyright
|
|
* notice and this permission notice appear in all copies of the
|
|
* software, derivative works or modified versions, and any portions
|
|
* thereof, and that both notices appear in supporting documentation.
|
|
*
|
|
* CARNEGIE MELLON ALLOWS FREE USE OF THIS SOFTWARE IN ITS
|
|
* CONDITION. CARNEGIE MELLON DISCLAIMS ANY LIABILITY OF ANY KIND FOR
|
|
* ANY DAMAGES WHATSOEVER RESULTING FROM THE USE OF THIS SOFTWARE.
|
|
*
|
|
* Carnegie Mellon requests users of this software to return to
|
|
*
|
|
* Software Distribution Coordinator or Software.Distribution@CS.CMU.EDU
|
|
* School of Computer Science
|
|
* Carnegie Mellon University
|
|
* Pittsburgh PA 15213-3890
|
|
*
|
|
* any improvements or extensions that they make and grant Carnegie the
|
|
* rights to redistribute these changes.
|
|
*
|
|
* $Id: db_output.c,v 1.5 1993/11/25 01:30:08 wollman Exp $
|
|
*/
|
|
|
|
/*
|
|
* Author: David B. Golub, Carnegie Mellon University
|
|
* Date: 7/90
|
|
*/
|
|
|
|
/*
|
|
* Printf and character output for debugger.
|
|
*/
|
|
|
|
#include "param.h"
|
|
#include "systm.h"
|
|
#include "machine/stdarg.h"
|
|
#include "ddb/ddb.h"
|
|
#include "machine/cons.h"
|
|
|
|
/*
|
|
* Character output - tracks position in line.
|
|
* To do this correctly, we should know how wide
|
|
* the output device is - then we could zero
|
|
* the line position when the output device wraps
|
|
* around to the start of the next line.
|
|
*
|
|
* Instead, we count the number of spaces printed
|
|
* since the last printing character so that we
|
|
* don't print trailing spaces. This avoids most
|
|
* of the wraparounds.
|
|
*/
|
|
int db_output_position = 0; /* output column */
|
|
int db_last_non_space = 0; /* last non-space character */
|
|
int db_tab_stop_width = 8; /* how wide are tab stops? */
|
|
#define NEXT_TAB(i) \
|
|
((((i) + db_tab_stop_width) / db_tab_stop_width) * db_tab_stop_width)
|
|
int db_max_width = 80; /* output line width */
|
|
|
|
|
|
static void db_printf_guts(const char *, va_list);
|
|
|
|
/*
|
|
* Force pending whitespace.
|
|
*/
|
|
void
|
|
db_force_whitespace()
|
|
{
|
|
register int last_print, next_tab;
|
|
|
|
last_print = db_last_non_space;
|
|
while (last_print < db_output_position) {
|
|
next_tab = NEXT_TAB(last_print);
|
|
if (next_tab <= db_output_position) {
|
|
while (last_print < next_tab) { /* DON'T send a tab!!! */
|
|
cnputc(' ');
|
|
last_print++;
|
|
}
|
|
}
|
|
else {
|
|
cnputc(' ');
|
|
last_print++;
|
|
}
|
|
}
|
|
db_last_non_space = db_output_position;
|
|
}
|
|
|
|
/*
|
|
* Output character. Buffer whitespace.
|
|
*/
|
|
void
|
|
db_putchar(c)
|
|
int c; /* character to output */
|
|
{
|
|
if (c > ' ' && c <= '~') {
|
|
/*
|
|
* Printing character.
|
|
* If we have spaces to print, print them first.
|
|
* Use tabs if possible.
|
|
*/
|
|
db_force_whitespace();
|
|
cnputc(c);
|
|
db_output_position++;
|
|
db_last_non_space = db_output_position;
|
|
}
|
|
else if (c == '\n') {
|
|
/* Return */
|
|
cnputc(c);
|
|
db_output_position = 0;
|
|
db_last_non_space = 0;
|
|
db_check_interrupt();
|
|
}
|
|
else if (c == '\t') {
|
|
/* assume tabs every 8 positions */
|
|
db_output_position = NEXT_TAB(db_output_position);
|
|
}
|
|
else if (c == ' ') {
|
|
/* space */
|
|
db_output_position++;
|
|
}
|
|
else if (c == '\007') {
|
|
/* bell */
|
|
cnputc(c);
|
|
}
|
|
/* other characters are assumed non-printing */
|
|
}
|
|
|
|
/*
|
|
* Return output position
|
|
*/
|
|
int
|
|
db_print_position()
|
|
{
|
|
return (db_output_position);
|
|
}
|
|
|
|
/*
|
|
* Printing
|
|
*/
|
|
void
|
|
db_printf(const char *fmt, ...)
|
|
{
|
|
va_list listp;
|
|
va_start(listp, fmt);
|
|
db_printf_guts (fmt, listp);
|
|
va_end(listp);
|
|
}
|
|
|
|
/* alternate name */
|
|
|
|
/*VARARGS1*/
|
|
void
|
|
kdbprintf(char *fmt, ...)
|
|
{
|
|
va_list listp;
|
|
va_start(listp, fmt);
|
|
db_printf_guts (fmt, listp);
|
|
va_end(listp);
|
|
}
|
|
|
|
/*
|
|
* End line if too long.
|
|
*/
|
|
void
|
|
db_end_line()
|
|
{
|
|
if (db_output_position >= db_max_width)
|
|
db_printf("\n");
|
|
}
|
|
|
|
/*
|
|
* Put a number (base <= 16) in a buffer in reverse order; return an
|
|
* optional length and a pointer to the NULL terminated (preceded?)
|
|
* buffer.
|
|
*/
|
|
static char *
|
|
db_ksprintn(ul, base, lenp)
|
|
register u_long ul;
|
|
register int base, *lenp;
|
|
{ /* A long in base 8, plus NULL. */
|
|
static char buf[sizeof(long) * NBBY / 3 + 2];
|
|
register char *p;
|
|
|
|
p = buf;
|
|
do {
|
|
*++p = "0123456789abcdef"[ul % base];
|
|
} while (ul /= base);
|
|
if (lenp)
|
|
*lenp = p - buf;
|
|
return (p);
|
|
}
|
|
|
|
static void
|
|
db_printf_guts(fmt, ap)
|
|
register const char *fmt;
|
|
va_list ap;
|
|
{
|
|
register char *p;
|
|
register int ch, n;
|
|
u_long ul;
|
|
int base, lflag, tmp, width;
|
|
char padc;
|
|
int ladjust;
|
|
int sharpflag;
|
|
int neg;
|
|
|
|
for (;;) {
|
|
padc = ' ';
|
|
width = 0;
|
|
while ((ch = *(u_char *)fmt++) != '%') {
|
|
if (ch == '\0')
|
|
return;
|
|
db_putchar(ch);
|
|
}
|
|
lflag = 0;
|
|
ladjust = 0;
|
|
sharpflag = 0;
|
|
neg = 0;
|
|
reswitch: switch (ch = *(u_char *)fmt++) {
|
|
case '0':
|
|
padc = '0';
|
|
goto reswitch;
|
|
case '1': case '2': case '3': case '4':
|
|
case '5': case '6': case '7': case '8': case '9':
|
|
for (width = 0;; ++fmt) {
|
|
width = width * 10 + ch - '0';
|
|
ch = *fmt;
|
|
if (ch < '0' || ch > '9')
|
|
break;
|
|
}
|
|
goto reswitch;
|
|
case 'l':
|
|
lflag = 1;
|
|
goto reswitch;
|
|
case '-':
|
|
ladjust = 1;
|
|
goto reswitch;
|
|
case '#':
|
|
sharpflag = 1;
|
|
goto reswitch;
|
|
case 'b':
|
|
ul = va_arg(ap, int);
|
|
p = va_arg(ap, char *);
|
|
for (p = db_ksprintn(ul, *p++, NULL); ch = *p--;)
|
|
db_putchar(ch);
|
|
|
|
if (!ul)
|
|
break;
|
|
|
|
for (tmp = 0; n = *p++;) {
|
|
if (ul & (1 << (n - 1))) {
|
|
db_putchar(tmp ? ',' : '<');
|
|
for (; (n = *p) > ' '; ++p)
|
|
db_putchar(n);
|
|
tmp = 1;
|
|
} else
|
|
for (; *p > ' '; ++p);
|
|
}
|
|
if (tmp)
|
|
db_putchar('>');
|
|
break;
|
|
case '*':
|
|
width = va_arg (ap, int);
|
|
if (width < 0) {
|
|
ladjust = !ladjust;
|
|
width = -width;
|
|
}
|
|
goto reswitch;
|
|
case 'c':
|
|
db_putchar(va_arg(ap, int));
|
|
break;
|
|
case 's':
|
|
p = va_arg(ap, char *);
|
|
width -= strlen (p);
|
|
if (!ladjust && width > 0)
|
|
while (width--)
|
|
db_putchar (padc);
|
|
while (ch = *p++)
|
|
db_putchar(ch);
|
|
if (ladjust && width > 0)
|
|
while (width--)
|
|
db_putchar (padc);
|
|
break;
|
|
case 'r':
|
|
ul = lflag ? va_arg(ap, u_long) : va_arg(ap, u_int);
|
|
if ((long)ul < 0) {
|
|
neg = 1;
|
|
ul = -(long)ul;
|
|
}
|
|
base = db_radix;
|
|
if (base < 8 || base > 16)
|
|
base = 10;
|
|
goto number;
|
|
case 'n':
|
|
ul = lflag ? va_arg(ap, u_long) : va_arg(ap, u_int);
|
|
base = db_radix;
|
|
if (base < 8 || base > 16)
|
|
base = 10;
|
|
goto number;
|
|
case 'd':
|
|
ul = lflag ? va_arg(ap, long) : va_arg(ap, int);
|
|
if ((long)ul < 0) {
|
|
neg = 1;
|
|
ul = -(long)ul;
|
|
}
|
|
base = 10;
|
|
goto number;
|
|
case 'o':
|
|
ul = lflag ? va_arg(ap, u_long) : va_arg(ap, u_int);
|
|
base = 8;
|
|
goto number;
|
|
case 'u':
|
|
ul = lflag ? va_arg(ap, u_long) : va_arg(ap, u_int);
|
|
base = 10;
|
|
goto number;
|
|
case 'z':
|
|
ul = lflag ? va_arg(ap, u_long) : va_arg(ap, u_int);
|
|
if ((long)ul < 0) {
|
|
neg = 1;
|
|
ul = -(long)ul;
|
|
}
|
|
base = 16;
|
|
goto number;
|
|
case 'x':
|
|
ul = lflag ? va_arg(ap, u_long) : va_arg(ap, u_int);
|
|
base = 16;
|
|
number: p = (char *)db_ksprintn(ul, base, &tmp);
|
|
if (sharpflag && ul != 0) {
|
|
if (base == 8)
|
|
tmp++;
|
|
else if (base == 16)
|
|
tmp += 2;
|
|
}
|
|
if (neg)
|
|
tmp++;
|
|
|
|
if (!ladjust && width && (width -= tmp) > 0)
|
|
while (width--)
|
|
db_putchar(padc);
|
|
if (neg)
|
|
db_putchar ('-');
|
|
if (sharpflag && ul != 0) {
|
|
if (base == 8) {
|
|
db_putchar ('0');
|
|
} else if (base == 16) {
|
|
db_putchar ('0');
|
|
db_putchar ('x');
|
|
}
|
|
}
|
|
if (ladjust && width && (width -= tmp) > 0)
|
|
while (width--)
|
|
db_putchar(padc);
|
|
|
|
while (ch = *p--)
|
|
db_putchar(ch);
|
|
break;
|
|
default:
|
|
db_putchar('%');
|
|
if (lflag)
|
|
db_putchar('l');
|
|
/* FALLTHROUGH */
|
|
case '%':
|
|
db_putchar(ch);
|
|
}
|
|
}
|
|
}
|
|
|