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- /* Adapted from LinuxBIOS */
-
- /*
- *
- * linux/lib/vsprintf.c
- *
- * Copyright (C) 1991, 1992 Linus Torvalds
- *
- */
-
- /* vsprintf.c -- Lars Wirzenius & Linus Torvalds. */
- /*
- * Wirzenius wrote this portably, Torvalds fucked it up :-)
- */
-
- #include "etherboot.h"
- #include <stdarg.h>
- #include <lib.h>
-
- /* haha, don't need ctype.c */
- #define isdigit(c) ((c) >= '0' && (c) <= '9')
- #define is_digit isdigit
- #define isxdigit(c) (((c) >= '0' && (c) <= '9') || ((c) >= 'a' && (c) <= 'f') || ((c) >= 'A' && (c) <= 'F'))
- #define islower(c) ((c) >= 'a' && (c) <= 'z')
- #define toupper(c) __toupper(c)
-
- static inline unsigned char __toupper(unsigned char c)
- {
- if (islower(c))
- c -= 'a'-'A';
- return c;
- }
-
-
- unsigned long long simple_strtoull(const char *cp,char **endp,unsigned int base)
- {
- unsigned long 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' : (islower(*cp)
- ? toupper(*cp) : *cp)-'A'+10) < base) {
- result = result*base + value;
- cp++;
- }
- if (endp)
- *endp = (char *)cp;
- return result;
- }
-
- long long simple_strtoll(const char *cp,char **endp,unsigned int base)
- {
- if(*cp=='-')
- return -simple_strtoull(cp+1,endp,base);
- return simple_strtoull(cp,endp,base);
- }
-
- unsigned long long strtoull_with_suffix(const char *cp,char **endp,unsigned int base)
- {
- unsigned long long result;
-
- if (!endp) {
- printf("%s must be called with endp\n", __FUNCTION__);
- return 0;
- }
- result = simple_strtoull(cp, endp, base);
- switch (toupper(**endp)) {
- case 'K':
- result <<= 10;
- ++*endp;
- break;
- case 'M':
- result <<= 20;
- ++*endp;
- break;
- case 'G':
- result <<= 30;
- ++*endp;
- break;
- }
- return result;
- }
-
- #if 0
- // it can be used to substitute the vsprintf.c in etherboot. And it has better
- // support in numeric output suppot
- //When you want to debug filo, you need to enable it and disable vsprintf.c
- // to get output from filo
- // BY LYH
-
- static int skip_atoi(const char **s)
- {
- int i=0;
-
- while (is_digit(**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' */
-
- #define do_div(n,base) ({ \
- int __res; \
- __res = ((unsigned long) n) % (unsigned) base; \
- n = ((unsigned long) n) / (unsigned) base; \
- __res; })
-
- static int number(int (*tx_byte)(int byte), long num, int base, int size, int precision
- ,int type)
- {
- char c,sign,tmp[66];
- const char *digits="0123456789abcdefghijklmnopqrstuvwxyz";
- int i;
- int count = 0;
-
- 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)
- tx_byte(' '), count++;
- if (sign)
- tx_byte(sign), count++;
- if (type & SPECIAL) {
- if (base==8)
- tx_byte('0'), count++;
- else if (base==16) {
- tx_byte('0'), count++;
- tx_byte(digits[33]), count++;
- }
- }
- if (!(type & LEFT))
- while (size-- > 0)
- tx_byte(c), count++;
- while (i < precision--)
- tx_byte('0'), count++;
- while (i-- > 0)
- tx_byte(tmp[i]), count++;
- while (size-- > 0)
- tx_byte(' '), count++;
- return count;
- }
-
-
- int vtxprintf(int (*tx_byte)(int byte), const char *fmt, va_list args)
- {
- int len;
- unsigned long num;
- int i, base;
- 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 */
-
- int count;
-
- for (count=0; *fmt ; ++fmt) {
- if (*fmt != '%') {
- tx_byte(*fmt), count++;
- 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 (is_digit(*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 (is_digit(*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') {
- qualifier = *fmt;
- ++fmt;
- }
-
- /* default base */
- base = 10;
-
- switch (*fmt) {
- case 'c':
- if (!(flags & LEFT))
- while (--field_width > 0)
- tx_byte(' '), count++;
- tx_byte((unsigned char) va_arg(args, int)), count++;
- while (--field_width > 0)
- tx_byte(' '), count++;
- continue;
-
- case 's':
- s = va_arg(args, char *);
- if (!s)
- s = "<NULL>";
-
- len = strnlen(s, precision);
-
- if (!(flags & LEFT))
- while (len < field_width--)
- tx_byte(' '), count++;
- for (i = 0; i < len; ++i)
- tx_byte(*s++), count++;
- while (len < field_width--)
- tx_byte(' '), count++;
- continue;
-
- case 'p':
- if (field_width == -1) {
- field_width = 2*sizeof(void *);
- flags |= ZEROPAD;
- }
- count += number(tx_byte,
- (unsigned long) va_arg(args, void *), 16,
- field_width, precision, flags);
- continue;
-
-
- case 'n':
- if (qualifier == 'l') {
- long * ip = va_arg(args, long *);
- *ip = count;
- } else {
- int * ip = va_arg(args, int *);
- *ip = count;
- }
- continue;
-
- case '%':
- tx_byte('%'), count++;
- 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:
- tx_byte('%'), count++;
- if (*fmt)
- tx_byte(*fmt), count++;
- else
- --fmt;
- continue;
- }
- if (qualifier == 'L')
- num = va_arg(args, unsigned long long);
- else if (qualifier == 'l')
- num = va_arg(args, unsigned long);
- else if (qualifier == 'h') {
- num = (unsigned short) va_arg(args, int);
- if (flags & SIGN)
- num = (short) num;
- } else if (flags & SIGN)
- num = va_arg(args, int);
- else
- num = va_arg(args, unsigned int);
- count += number(tx_byte, num, base, field_width, precision, flags);
- }
- return count;
- }
-
- /* FIXME this global makes vsprintf non-reentrant
- */
- static char *str_buf;
- static int str_tx_byte(int byte)
- {
- *str_buf = byte;
- str_buf++;
- return byte;
- }
-
- int vsprintf(char * buf, const char *fmt, va_list args)
- {
- int i;
- str_buf = buf;
- i = vtxprintf(str_tx_byte, fmt, args);
- /* maeder/Ispiri -- The null termination was missing a deference */
- /* and was just zeroing out the pointer instead */
- *str_buf = '\0';
- return i;
- }
-
- 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;
- }
-
- void printf(const char *fmt, ...)
- {
- va_list args;
- int i;
-
- va_start(args, fmt);
- i = vtxprintf(putchar, fmt, args);
- va_end(args);
- return i;
- }
- #endif
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