+++ /dev/null
-/*
- * 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 <stdarg.h>
-#include <linux/types.h>
-#include <linux/string.h>
-#include <linux/ctype.h>
-
-#include <common.h>
-#if !defined (CONFIG_PANIC_HANG)
-#include <command.h>
-/*cmd_boot.c*/
-extern int do_reset (cmd_tbl_t *cmdtp, int flag, int argc, char *argv[]);
-#endif
-
-#include <div64.h>
-# define NUM_TYPE long long
-#define noinline __attribute__((noinline))
-
-const char hex_asc[] = "0123456789abcdef";
-#define hex_asc_lo(x) hex_asc[((x) & 0x0f)]
-#define hex_asc_hi(x) hex_asc[((x) & 0xf0) >> 4]
-
-static inline char *pack_hex_byte(char *buf, u8 byte)
-{
- *buf++ = hex_asc_hi(byte);
- *buf++ = hex_asc_lo(byte);
- return buf;
-}
-
-unsigned long simple_strtoul(const char *cp,char **endp,unsigned int base)
-{
- unsigned long result = 0,value;
-
- if (*cp == '0') {
- cp++;
- if ((*cp == 'x') && isxdigit(cp[1])) {
- base = 16;
- cp++;
- }
- if (!base) {
- base = 8;
- }
- }
- if (!base) {
- base = 10;
- }
- 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 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);
-}
-
-int ustrtoul(const char *cp, char **endp, unsigned int base)
-{
- unsigned long result = simple_strtoul(cp, endp, base);
- switch (**endp) {
- case 'G' :
- result *= 1024;
- /* fall through */
- case 'M':
- result *= 1024;
- /* fall through */
- case 'K':
- case 'k':
- result *= 1024;
- if ((*endp)[1] == 'i') {
- if ((*endp)[2] == 'B')
- (*endp) += 3;
- else
- (*endp) += 2;
- }
- }
- return result;
-}
-
-unsigned long long simple_strtoull (const char *cp, char **endp, unsigned int base)
-{
- unsigned long long result = 0, value;
-
- if (*cp == '0') {
- cp++;
- if ((*cp == 'x') && isxdigit (cp[1])) {
- base = 16;
- cp++;
- }
- if (!base) {
- base = 8;
- }
- }
- if (!base) {
- base = 10;
- }
- 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;
-}
-
-/* we use this so that we can do without the ctype library */
-#define is_digit(c) ((c) >= '0' && (c) <= '9')
-
-static int skip_atoi(const char **s)
-{
- int i=0;
-
- while (is_digit(**s))
- i = i*10 + *((*s)++) - '0';
- return i;
-}
-
-/* Decimal conversion is by far the most typical, and is used
- * for /proc and /sys data. This directly impacts e.g. top performance
- * with many processes running. We optimize it for speed
- * using code from
- * http://www.cs.uiowa.edu/~jones/bcd/decimal.html
- * (with permission from the author, Douglas W. Jones). */
-
-/* Formats correctly any integer in [0,99999].
- * Outputs from one to five digits depending on input.
- * On i386 gcc 4.1.2 -O2: ~250 bytes of code. */
-static char* put_dec_trunc(char *buf, unsigned q)
-{
- unsigned d3, d2, d1, d0;
- d1 = (q>>4) & 0xf;
- d2 = (q>>8) & 0xf;
- d3 = (q>>12);
-
- d0 = 6*(d3 + d2 + d1) + (q & 0xf);
- q = (d0 * 0xcd) >> 11;
- d0 = d0 - 10*q;
- *buf++ = d0 + '0'; /* least significant digit */
- d1 = q + 9*d3 + 5*d2 + d1;
- if (d1 != 0) {
- q = (d1 * 0xcd) >> 11;
- d1 = d1 - 10*q;
- *buf++ = d1 + '0'; /* next digit */
-
- d2 = q + 2*d2;
- if ((d2 != 0) || (d3 != 0)) {
- q = (d2 * 0xd) >> 7;
- d2 = d2 - 10*q;
- *buf++ = d2 + '0'; /* next digit */
-
- d3 = q + 4*d3;
- if (d3 != 0) {
- q = (d3 * 0xcd) >> 11;
- d3 = d3 - 10*q;
- *buf++ = d3 + '0'; /* next digit */
- if (q != 0)
- *buf++ = q + '0'; /* most sign. digit */
- }
- }
- }
- return buf;
-}
-/* Same with if's removed. Always emits five digits */
-static char* put_dec_full(char *buf, unsigned q)
-{
- /* BTW, if q is in [0,9999], 8-bit ints will be enough, */
- /* but anyway, gcc produces better code with full-sized ints */
- unsigned d3, d2, d1, d0;
- d1 = (q>>4) & 0xf;
- d2 = (q>>8) & 0xf;
- d3 = (q>>12);
-
- /*
- * Possible ways to approx. divide by 10
- * gcc -O2 replaces multiply with shifts and adds
- * (x * 0xcd) >> 11: 11001101 - shorter code than * 0x67 (on i386)
- * (x * 0x67) >> 10: 1100111
- * (x * 0x34) >> 9: 110100 - same
- * (x * 0x1a) >> 8: 11010 - same
- * (x * 0x0d) >> 7: 1101 - same, shortest code (on i386)
- */
-
- d0 = 6*(d3 + d2 + d1) + (q & 0xf);
- q = (d0 * 0xcd) >> 11;
- d0 = d0 - 10*q;
- *buf++ = d0 + '0';
- d1 = q + 9*d3 + 5*d2 + d1;
- q = (d1 * 0xcd) >> 11;
- d1 = d1 - 10*q;
- *buf++ = d1 + '0';
-
- d2 = q + 2*d2;
- q = (d2 * 0xd) >> 7;
- d2 = d2 - 10*q;
- *buf++ = d2 + '0';
-
- d3 = q + 4*d3;
- q = (d3 * 0xcd) >> 11; /* - shorter code */
- /* q = (d3 * 0x67) >> 10; - would also work */
- d3 = d3 - 10*q;
- *buf++ = d3 + '0';
- *buf++ = q + '0';
- return buf;
-}
-/* No inlining helps gcc to use registers better */
-static noinline char* put_dec(char *buf, unsigned NUM_TYPE num)
-{
- while (1) {
- unsigned rem;
- if (num < 100000)
- return put_dec_trunc(buf, num);
- rem = do_div(num, 100000);
- buf = put_dec_full(buf, rem);
- }
-}
-
-#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 SMALL 32 /* Must be 32 == 0x20 */
-#define SPECIAL 64 /* 0x */
-
-static char *number(char *buf, unsigned NUM_TYPE num, int base, int size, int precision, int type)
-{
- /* we are called with base 8, 10 or 16, only, thus don't need "G..." */
- static const char digits[16] = "0123456789ABCDEF"; /* "GHIJKLMNOPQRSTUVWXYZ"; */
-
- char tmp[66];
- char sign;
- char locase;
- int need_pfx = ((type & SPECIAL) && base != 10);
- int i;
-
- /* locase = 0 or 0x20. ORing digits or letters with 'locase'
- * produces same digits or (maybe lowercased) letters */
- locase = (type & SMALL);
- if (type & LEFT)
- type &= ~ZEROPAD;
- sign = 0;
- if (type & SIGN) {
- if ((signed NUM_TYPE) num < 0) {
- sign = '-';
- num = - (signed NUM_TYPE) num;
- size--;
- } else if (type & PLUS) {
- sign = '+';
- size--;
- } else if (type & SPACE) {
- sign = ' ';
- size--;
- }
- }
- if (need_pfx) {
- size--;
- if (base == 16)
- size--;
- }
-
- /* generate full string in tmp[], in reverse order */
- i = 0;
- if (num == 0)
- tmp[i++] = '0';
- /* Generic code, for any base:
- else do {
- tmp[i++] = (digits[do_div(num,base)] | locase);
- } while (num != 0);
- */
- else if (base != 10) { /* 8 or 16 */
- int mask = base - 1;
- int shift = 3;
- if (base == 16) shift = 4;
- do {
- tmp[i++] = (digits[((unsigned char)num) & mask] | locase);
- num >>= shift;
- } while (num);
- } else { /* base 10 */
- i = put_dec(tmp, num) - tmp;
- }
-
- /* printing 100 using %2d gives "100", not "00" */
- if (i > precision)
- precision = i;
- /* leading space padding */
- size -= precision;
- if (!(type & (ZEROPAD+LEFT)))
- while(--size >= 0)
- *buf++ = ' ';
- /* sign */
- if (sign)
- *buf++ = sign;
- /* "0x" / "0" prefix */
- if (need_pfx) {
- *buf++ = '0';
- if (base == 16)
- *buf++ = ('X' | locase);
- }
- /* zero or space padding */
- if (!(type & LEFT)) {
- char c = (type & ZEROPAD) ? '0' : ' ';
- while (--size >= 0)
- *buf++ = c;
- }
- /* hmm even more zero padding? */
- while (i <= --precision)
- *buf++ = '0';
- /* actual digits of result */
- while (--i >= 0)
- *buf++ = tmp[i];
- /* trailing space padding */
- while (--size >= 0)
- *buf++ = ' ';
- return buf;
-}
-
-static char *string(char *buf, char *s, int field_width, int precision, int flags)
-{
- int len, i;
-
- if (s == 0)
- s = "<NULL>";
-
- len = strnlen(s, precision);
-
- if (!(flags & LEFT))
- while (len < field_width--)
- *buf++ = ' ';
- for (i = 0; i < len; ++i)
- *buf++ = *s++;
- while (len < field_width--)
- *buf++ = ' ';
- return buf;
-}
-
-#ifdef CONFIG_CMD_NET
-static char *mac_address_string(char *buf, u8 *addr, int field_width,
- int precision, int flags)
-{
- char mac_addr[6 * 3]; /* (6 * 2 hex digits), 5 colons and trailing zero */
- char *p = mac_addr;
- int i;
-
- for (i = 0; i < 6; i++) {
- p = pack_hex_byte(p, addr[i]);
- if (!(flags & SPECIAL) && i != 5)
- *p++ = ':';
- }
- *p = '\0';
-
- return string(buf, mac_addr, field_width, precision, flags & ~SPECIAL);
-}
-
-static char *ip6_addr_string(char *buf, u8 *addr, int field_width,
- int precision, int flags)
-{
- char ip6_addr[8 * 5]; /* (8 * 4 hex digits), 7 colons and trailing zero */
- char *p = ip6_addr;
- int i;
-
- for (i = 0; i < 8; i++) {
- p = pack_hex_byte(p, addr[2 * i]);
- p = pack_hex_byte(p, addr[2 * i + 1]);
- if (!(flags & SPECIAL) && i != 7)
- *p++ = ':';
- }
- *p = '\0';
-
- return string(buf, ip6_addr, field_width, precision, flags & ~SPECIAL);
-}
-
-static char *ip4_addr_string(char *buf, u8 *addr, int field_width,
- int precision, int flags)
-{
- char ip4_addr[4 * 4]; /* (4 * 3 decimal digits), 3 dots and trailing zero */
- char temp[3]; /* hold each IP quad in reverse order */
- char *p = ip4_addr;
- int i, digits;
-
- for (i = 0; i < 4; i++) {
- digits = put_dec_trunc(temp, addr[i]) - temp;
- /* reverse the digits in the quad */
- while (digits--)
- *p++ = temp[digits];
- if (i != 3)
- *p++ = '.';
- }
- *p = '\0';
-
- return string(buf, ip4_addr, field_width, precision, flags & ~SPECIAL);
-}
-#endif
-
-/*
- * Show a '%p' thing. A kernel extension is that the '%p' is followed
- * by an extra set of alphanumeric characters that are extended format
- * specifiers.
- *
- * Right now we handle:
- *
- * - 'M' For a 6-byte MAC address, it prints the address in the
- * usual colon-separated hex notation
- * - 'I' [46] for IPv4/IPv6 addresses printed in the usual way (dot-separated
- * decimal for v4 and colon separated network-order 16 bit hex for v6)
- * - 'i' [46] for 'raw' IPv4/IPv6 addresses, IPv6 omits the colons, IPv4 is
- * currently the same
- *
- * Note: The difference between 'S' and 'F' is that on ia64 and ppc64
- * function pointers are really function descriptors, which contain a
- * pointer to the real address.
- */
-static char *pointer(const char *fmt, char *buf, void *ptr, int field_width, int precision, int flags)
-{
- if (!ptr)
- return string(buf, "(null)", field_width, precision, flags);
-
-#ifdef CONFIG_CMD_NET
- switch (*fmt) {
- case 'm':
- flags |= SPECIAL;
- /* Fallthrough */
- case 'M':
- return mac_address_string(buf, ptr, field_width, precision, flags);
- case 'i':
- flags |= SPECIAL;
- /* Fallthrough */
- case 'I':
- if (fmt[1] == '6')
- return ip6_addr_string(buf, ptr, field_width, precision, flags);
- if (fmt[1] == '4')
- return ip4_addr_string(buf, ptr, field_width, precision, flags);
- flags &= ~SPECIAL;
- break;
- }
-#endif
- flags |= SMALL;
- if (field_width == -1) {
- field_width = 2*sizeof(void *);
- flags |= ZEROPAD;
- }
- return number(buf, (unsigned long) ptr, 16, field_width, precision, flags);
-}
-
-/**
- * vsprintf - Format a string and place it in a buffer
- * @buf: The buffer to place the result into
- * @fmt: The format string to use
- * @args: Arguments for the format string
- *
- * This function follows C99 vsprintf, but has some extensions:
- * %pS output the name of a text symbol
- * %pF output the name of a function pointer
- * %pR output the address range in a struct resource
- *
- * The function returns the number of characters written
- * into @buf.
- *
- * Call this function if you are already dealing with a va_list.
- * You probably want sprintf() instead.
- */
-int vsprintf(char *buf, const char *fmt, va_list args)
-{
- unsigned NUM_TYPE num;
- int base;
- char *str;
-
- 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 */
- /* 't' added for ptrdiff_t */
-
- str = buf;
-
- for (; *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 (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' ||
- *fmt == 'Z' || *fmt == 'z' || *fmt == 't') {
- qualifier = *fmt;
- ++fmt;
- if (qualifier == 'l' && *fmt == 'l') {
- qualifier = 'L';
- ++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':
- str = string(str, va_arg(args, char *), field_width, precision, flags);
- continue;
-
- case 'p':
- str = pointer(fmt+1, str,
- va_arg(args, void *),
- field_width, precision, flags);
- /* Skip all alphanumeric pointer suffixes */
- while (isalnum(fmt[1]))
- fmt++;
- continue;
-
- case 'n':
- if (qualifier == 'l') {
- long * ip = va_arg(args, long *);
- *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 |= SMALL;
- 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') /* "quad" for 64 bit variables */
- num = va_arg(args, unsigned long long);
- else if (qualifier == 'l') {
- num = va_arg(args, unsigned long);
- if (flags & SIGN)
- num = (signed long) num;
- } else if (qualifier == 'Z' || qualifier == 'z') {
- num = va_arg(args, size_t);
- } else if (qualifier == 't') {
- num = va_arg(args, ptrdiff_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;
-}
-
-/**
- * sprintf - Format a string and place it in a buffer
- * @buf: The buffer to place the result into
- * @fmt: The format string to use
- * @...: Arguments for the format string
- *
- * The function returns the number of characters written
- * into @buf.
- *
- * See the vsprintf() documentation for format string extensions over C99.
- */
-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 panic(const char *fmt, ...)
-{
- va_list args;
- va_start(args, fmt);
- vprintf(fmt, args);
- putc('\n');
- va_end(args);
-#if defined (CONFIG_PANIC_HANG)
- hang();
-#else
- udelay (100000); /* allow messages to go out */
- do_reset (NULL, 0, 0, NULL);
-#endif
-}
projects / karo-tx-uboot.git / blobdiff