+++ /dev/null
-/*
- * 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 <linux/types.h>
-#include <linux/string.h>
-#include <linux/ctype.h>
-
-#include <asm/div64.h>
-
-int (*prom)(void *);
-
-void *chosen_handle;
-void *stdin;
-void *stdout;
-void *stderr;
-
-void exit(void);
-void *finddevice(const char *name);
-int getprop(void *phandle, const char *name, void *buf, int buflen);
-void chrpboot(int a1, int a2, void *prom); /* in main.c */
-
-void printk(char *fmt, ...);
-
-void
-start(int a1, int a2, void *promptr)
-{
- prom = (int (*)(void *)) promptr;
- chosen_handle = finddevice("/chosen");
- if (chosen_handle == (void *) -1)
- exit();
- if (getprop(chosen_handle, "stdout", &stdout, sizeof(stdout)) != 4)
- exit();
- stderr = stdout;
- if (getprop(chosen_handle, "stdin", &stdin, sizeof(stdin)) != 4)
- exit();
-
- chrpboot(a1, a2, promptr);
- for (;;)
- exit();
-}
-
-int
-write(void *handle, void *ptr, int nb)
-{
- struct prom_args {
- char *service;
- int nargs;
- int nret;
- void *ihandle;
- void *addr;
- int len;
- int actual;
- } args;
-
- args.service = "write";
- args.nargs = 3;
- args.nret = 1;
- args.ihandle = handle;
- args.addr = ptr;
- args.len = nb;
- args.actual = -1;
- (*prom)(&args);
- return args.actual;
-}
-
-int
-read(void *handle, void *ptr, int nb)
-{
- struct prom_args {
- char *service;
- int nargs;
- int nret;
- void *ihandle;
- void *addr;
- int len;
- int actual;
- } args;
-
- args.service = "read";
- args.nargs = 3;
- args.nret = 1;
- args.ihandle = handle;
- args.addr = ptr;
- args.len = nb;
- args.actual = -1;
- (*prom)(&args);
- return args.actual;
-}
-
-void
-exit()
-{
- struct prom_args {
- char *service;
- } args;
-
- for (;;) {
- args.service = "exit";
- (*prom)(&args);
- }
-}
-
-void
-pause(void)
-{
- struct prom_args {
- char *service;
- } args;
-
- args.service = "enter";
- (*prom)(&args);
-}
-
-void *
-finddevice(const char *name)
-{
- struct prom_args {
- char *service;
- int nargs;
- int nret;
- const char *devspec;
- void *phandle;
- } args;
-
- args.service = "finddevice";
- args.nargs = 1;
- args.nret = 1;
- args.devspec = name;
- args.phandle = (void *) -1;
- (*prom)(&args);
- return args.phandle;
-}
-
-void *
-claim(unsigned long virt, unsigned long size, unsigned long align)
-{
- struct prom_args {
- char *service;
- int nargs;
- int nret;
- unsigned int virt;
- unsigned int size;
- unsigned int align;
- void *ret;
- } args;
-
- args.service = "claim";
- args.nargs = 3;
- args.nret = 1;
- args.virt = virt;
- args.size = size;
- args.align = align;
- (*prom)(&args);
- return args.ret;
-}
-
-int
-getprop(void *phandle, const char *name, void *buf, int buflen)
-{
- struct prom_args {
- char *service;
- int nargs;
- int nret;
- void *phandle;
- const char *name;
- void *buf;
- int buflen;
- int size;
- } args;
-
- args.service = "getprop";
- args.nargs = 4;
- args.nret = 1;
- args.phandle = phandle;
- args.name = name;
- args.buf = buf;
- args.buflen = buflen;
- args.size = -1;
- (*prom)(&args);
- return args.size;
-}
-
-int
-putc(int c, void *f)
-{
- char ch = c;
-
- if (c == '\n')
- putc('\r', f);
- return write(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 write(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\r\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++;
-}
-
-
-
-/* String functions lifted from lib/vsprintf.c and lib/ctype.c */
-unsigned char _ctype[] = {
-_C,_C,_C,_C,_C,_C,_C,_C, /* 0-7 */
-_C,_C|_S,_C|_S,_C|_S,_C|_S,_C|_S,_C,_C, /* 8-15 */
-_C,_C,_C,_C,_C,_C,_C,_C, /* 16-23 */
-_C,_C,_C,_C,_C,_C,_C,_C, /* 24-31 */
-_S|_SP,_P,_P,_P,_P,_P,_P,_P, /* 32-39 */
-_P,_P,_P,_P,_P,_P,_P,_P, /* 40-47 */
-_D,_D,_D,_D,_D,_D,_D,_D, /* 48-55 */
-_D,_D,_P,_P,_P,_P,_P,_P, /* 56-63 */
-_P,_U|_X,_U|_X,_U|_X,_U|_X,_U|_X,_U|_X,_U, /* 64-71 */
-_U,_U,_U,_U,_U,_U,_U,_U, /* 72-79 */
-_U,_U,_U,_U,_U,_U,_U,_U, /* 80-87 */
-_U,_U,_U,_P,_P,_P,_P,_P, /* 88-95 */
-_P,_L|_X,_L|_X,_L|_X,_L|_X,_L|_X,_L|_X,_L, /* 96-103 */
-_L,_L,_L,_L,_L,_L,_L,_L, /* 104-111 */
-_L,_L,_L,_L,_L,_L,_L,_L, /* 112-119 */
-_L,_L,_L,_P,_P,_P,_P,_C, /* 120-127 */
-0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0, /* 128-143 */
-0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0, /* 144-159 */
-_S|_SP,_P,_P,_P,_P,_P,_P,_P,_P,_P,_P,_P,_P,_P,_P,_P, /* 160-175 */
-_P,_P,_P,_P,_P,_P,_P,_P,_P,_P,_P,_P,_P,_P,_P,_P, /* 176-191 */
-_U,_U,_U,_U,_U,_U,_U,_U,_U,_U,_U,_U,_U,_U,_U,_U, /* 192-207 */
-_U,_U,_U,_U,_U,_U,_U,_P,_U,_U,_U,_U,_U,_U,_U,_L, /* 208-223 */
-_L,_L,_L,_L,_L,_L,_L,_L,_L,_L,_L,_L,_L,_L,_L,_L, /* 224-239 */
-_L,_L,_L,_L,_L,_L,_L,_P,_L,_L,_L,_L,_L,_L,_L,_L}; /* 240-255 */
-
-size_t strnlen(const char * s, size_t count)
-{
- const char *sc;
-
- for (sc = s; count-- && *sc != '\0'; ++sc)
- /* nothing */;
- return sc - s;
-}
-
-unsigned long simple_strtoul(const char *cp,char **endp,unsigned int base)
-{
- unsigned long result = 0,value;
-
- if (!base) {
- base = 10;
- if (*cp == '0') {
- base = 8;
- cp++;
- if ((*cp == 'x') && isxdigit(cp[1])) {
- cp++;
- base = 16;
- }
- }
- }
- while (isxdigit(*cp) &&
- (value = isdigit(*cp) ? *cp-'0' : toupper(*cp)-'A'+10) < base) {
- result = result*base + value;
- cp++;
- }
- if (endp)
- *endp = (char *)cp;
- return result;
-}
-
-long simple_strtol(const char *cp,char **endp,unsigned int base)
-{
- if(*cp=='-')
- return -simple_strtoul(cp+1,endp,base);
- return simple_strtoul(cp,endp,base);
-}
-
-static int skip_atoi(const char **s)
-{
- int i=0;
-
- while (isdigit(**s))
- i = i*10 + *((*s)++) - '0';
- return i;
-}
-
-#define ZEROPAD 1 /* pad with zero */
-#define SIGN 2 /* unsigned/signed long */
-#define PLUS 4 /* show plus */
-#define SPACE 8 /* space if plus */
-#define LEFT 16 /* left justified */
-#define SPECIAL 32 /* 0x */
-#define LARGE 64 /* use 'ABCDEF' instead of 'abcdef' */
-
-static char * number(char * str, long long num, int base, int size, int precision, int type)
-{
- char c,sign,tmp[66];
- const char *digits="0123456789abcdefghijklmnopqrstuvwxyz";
- int i;
-
- if (type & LARGE)
- digits = "0123456789ABCDEFGHIJKLMNOPQRSTUVWXYZ";
- if (type & LEFT)
- type &= ~ZEROPAD;
- if (base < 2 || base > 36)
- return 0;
- c = (type & ZEROPAD) ? '0' : ' ';
- sign = 0;
- if (type & SIGN) {
- if (num < 0) {
- sign = '-';
- num = -num;
- size--;
- } else if (type & PLUS) {
- sign = '+';
- size--;
- } else if (type & SPACE) {
- sign = ' ';
- size--;
- }
- }
- if (type & SPECIAL) {
- if (base == 16)
- size -= 2;
- else if (base == 8)
- size--;
- }
- i = 0;
- if (num == 0)
- tmp[i++]='0';
- else while (num != 0)
- tmp[i++] = digits[do_div(num,base)];
- if (i > precision)
- precision = i;
- size -= precision;
- if (!(type&(ZEROPAD+LEFT)))
- while(size-->0)
- *str++ = ' ';
- if (sign)
- *str++ = sign;
- if (type & SPECIAL) {
- if (base==8)
- *str++ = '0';
- else if (base==16) {
- *str++ = '0';
- *str++ = digits[33];
- }
- }
- if (!(type & LEFT))
- while (size-- > 0)
- *str++ = c;
- while (i < precision--)
- *str++ = '0';
- while (i-- > 0)
- *str++ = tmp[i];
- while (size-- > 0)
- *str++ = ' ';
- return str;
-}
-
-/* Forward decl. needed for IP address printing stuff... */
-int sprintf(char * buf, const char *fmt, ...);
-
-int vsprintf(char *buf, const char *fmt, va_list args)
-{
- int len;
- unsigned long long num;
- int i, base;
- char * str;
- const char *s;
-
- int flags; /* flags to number() */
-
- int field_width; /* width of output field */
- int precision; /* min. # of digits for integers; max
- number of chars for from string */
- int qualifier; /* 'h', 'l', or 'L' for integer fields */
- /* 'z' support added 23/7/1999 S.H. */
- /* 'z' changed to 'Z' --davidm 1/25/99 */
-
-
- for (str=buf ; *fmt ; ++fmt) {
- if (*fmt != '%') {
- *str++ = *fmt;
- continue;
- }
-
- /* process flags */
- flags = 0;
- repeat:
- ++fmt; /* this also skips first '%' */
- switch (*fmt) {
- case '-': flags |= LEFT; goto repeat;
- case '+': flags |= PLUS; goto repeat;
- case ' ': flags |= SPACE; goto repeat;
- case '#': flags |= SPECIAL; goto repeat;
- case '0': flags |= ZEROPAD; goto repeat;
- }
-
- /* get field width */
- field_width = -1;
- if (isdigit(*fmt))
- field_width = skip_atoi(&fmt);
- else if (*fmt == '*') {
- ++fmt;
- /* it's the next argument */
- field_width = va_arg(args, int);
- if (field_width < 0) {
- field_width = -field_width;
- flags |= LEFT;
- }
- }
-
- /* get the precision */
- precision = -1;
- if (*fmt == '.') {
- ++fmt;
- if (isdigit(*fmt))
- precision = skip_atoi(&fmt);
- else if (*fmt == '*') {
- ++fmt;
- /* it's the next argument */
- precision = va_arg(args, int);
- }
- if (precision < 0)
- precision = 0;
- }
-
- /* get the conversion qualifier */
- qualifier = -1;
- if (*fmt == 'h' || *fmt == 'l' || *fmt == 'L' || *fmt =='Z') {
- qualifier = *fmt;
- ++fmt;
- }
-
- /* default base */
- base = 10;
-
- switch (*fmt) {
- case 'c':
- if (!(flags & LEFT))
- while (--field_width > 0)
- *str++ = ' ';
- *str++ = (unsigned char) va_arg(args, int);
- while (--field_width > 0)
- *str++ = ' ';
- continue;
-
- case 's':
- s = va_arg(args, char *);
- if (!s)
- s = "<NULL>";
-
- len = strnlen(s, precision);
-
- if (!(flags & LEFT))
- while (len < field_width--)
- *str++ = ' ';
- for (i = 0; i < len; ++i)
- *str++ = *s++;
- while (len < field_width--)
- *str++ = ' ';
- continue;
-
- case 'p':
- if (field_width == -1) {
- field_width = 2*sizeof(void *);
- flags |= ZEROPAD;
- }
- str = number(str,
- (unsigned long) va_arg(args, void *), 16,
- field_width, precision, flags);
- continue;
-
-
- case 'n':
- if (qualifier == 'l') {
- long * ip = va_arg(args, long *);
- *ip = (str - buf);
- } else if (qualifier == 'Z') {
- size_t * ip = va_arg(args, size_t *);
- *ip = (str - buf);
- } else {
- int * ip = va_arg(args, int *);
- *ip = (str - buf);
- }
- continue;
-
- case '%':
- *str++ = '%';
- continue;
-
- /* integer number formats - set up the flags and "break" */
- case 'o':
- base = 8;
- break;
-
- case 'X':
- flags |= LARGE;
- case 'x':
- base = 16;
- break;
-
- case 'd':
- case 'i':
- flags |= SIGN;
- case 'u':
- break;
-
- default:
- *str++ = '%';
- if (*fmt)
- *str++ = *fmt;
- else
- --fmt;
- continue;
- }
- if (qualifier == 'L')
- num = va_arg(args, long long);
- else if (qualifier == 'l') {
- num = va_arg(args, unsigned long);
- if (flags & SIGN)
- num = (signed long) num;
- } else if (qualifier == 'Z') {
- num = va_arg(args, size_t);
- } else if (qualifier == 'h') {
- num = (unsigned short) va_arg(args, int);
- if (flags & SIGN)
- num = (signed short) num;
- } else {
- num = va_arg(args, unsigned int);
- if (flags & SIGN)
- num = (signed int) num;
- }
- str = number(str, num, base, field_width, precision, flags);
- }
- *str = '\0';
- return str-buf;
-}
-
-int sprintf(char * buf, const char *fmt, ...)
-{
- va_list args;
- int i;
-
- va_start(args, fmt);
- i=vsprintf(buf,fmt,args);
- va_end(args);
- return i;
-}
-
-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);
- write(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);
- write(stdout, sprint_buf, n);
- return n;
-}
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