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/*
* Copyright (C) Paul Mackerras 1997.
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License
* as published by the Free Software Foundation; either version
* 2 of the License, or (at your option) any later version.
*/
#include <stdarg.h>
#include "of1275.h"
extern int strlen(const char *s);
extern void boot(int a1, int a2, void *prom);
phandle stdin;
phandle stdout;
phandle stderr;
void printk(char *fmt, ...);
void
start(int a1, int a2, void *promptr)
{
ofinit(promptr);
if (ofstdio(&stdin, &stdout, &stderr))
exit();
boot(a1, a2, promptr);
for (;;)
exit();
}
int writestring(void *f, char *ptr, int nb)
{
int w = 0, i;
char *ret = "\r";
for (i = 0; i < nb; ++i) {
if (ptr[i] == '\n') {
if (i > w) {
write(f, ptr + w, i - w);
w = i;
}
write(f, ret, 1);
}
}
if (w < nb)
write(f, ptr + w, nb - w);
return nb;
}
int
putc(int c, void *f)
{
char ch = c;
return writestring(f, &ch, 1) == 1? c: -1;
}
int
putchar(int c)
{
return putc(c, stdout);
}
int
fputs(char *str, void *f)
{
int n = strlen(str);
return writestring(f, str, n) == n? 0: -1;
}
int
readchar(void)
{
char ch;
for (;;) {
switch (read(stdin, &ch, 1)) {
case 1:
return ch;
case -1:
printk("read(stdin) returned -1\n");
return -1;
}
}
}
static char line[256];
static char *lineptr;
static int lineleft;
int
getchar(void)
{
int c;
if (lineleft == 0) {
lineptr = line;
for (;;) {
c = readchar();
if (c == -1 || c == 4)
break;
if (c == '\r' || c == '\n') {
*lineptr++ = '\n';
putchar('\n');
break;
}
switch (c) {
case 0177:
case '\b':
if (lineptr > line) {
putchar('\b');
putchar(' ');
putchar('\b');
--lineptr;
}
break;
case 'U' & 0x1F:
while (lineptr > line) {
putchar('\b');
putchar(' ');
putchar('\b');
--lineptr;
}
break;
default:
if (lineptr >= &line[sizeof(line) - 1])
putchar('\a');
else {
putchar(c);
*lineptr++ = c;
}
}
}
lineleft = lineptr - line;
lineptr = line;
}
if (lineleft == 0)
return -1;
--lineleft;
return *lineptr++;
}
extern int vsprintf(char *buf, const char *fmt, va_list args);
static char sprint_buf[1024];
void
printk(char *fmt, ...)
{
va_list args;
int n;
va_start(args, fmt);
n = vsprintf(sprint_buf, fmt, args);
va_end(args);
writestring(stdout, sprint_buf, n);
}
int
printf(char *fmt, ...)
{
va_list args;
int n;
va_start(args, fmt);
n = vsprintf(sprint_buf, fmt, args);
va_end(args);
writestring(stdout, sprint_buf, n);
return n;
}
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