mirror of
https://github.com/u-boot/u-boot.git
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7e5f460ec4
It is a pain to have to specify the value 16 in each call. Add a new hextoul() function and update the code to use it. Add a proper comment to simple_strtoul() while we are here. Signed-off-by: Simon Glass <sjg@chromium.org>
880 lines
19 KiB
C
880 lines
19 KiB
C
/*
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* linux/lib/vsprintf.c
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*
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* Copyright (C) 1991, 1992 Linus Torvalds
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* (C) Copyright 2000-2009
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* Wolfgang Denk, DENX Software Engineering, wd@denx.de.
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*/
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/* vsprintf.c -- Lars Wirzenius & Linus Torvalds. */
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/*
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* Wirzenius wrote this portably, Torvalds fucked it up :-)
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*
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* from hush: simple_itoa() was lifted from boa-0.93.15
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*/
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#include <common.h>
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#include <charset.h>
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#include <efi_loader.h>
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#include <div64.h>
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#include <hexdump.h>
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#include <stdarg.h>
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#include <uuid.h>
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#include <vsprintf.h>
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#include <linux/ctype.h>
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#include <linux/err.h>
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#include <linux/types.h>
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#include <linux/string.h>
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/* we use this so that we can do without the ctype library */
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#define is_digit(c) ((c) >= '0' && (c) <= '9')
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static int skip_atoi(const char **s)
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{
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int i = 0;
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while (is_digit(**s))
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i = i * 10 + *((*s)++) - '0';
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return i;
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}
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/* Decimal conversion is by far the most typical, and is used
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* for /proc and /sys data. This directly impacts e.g. top performance
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* with many processes running. We optimize it for speed
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* using code from
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* http://www.cs.uiowa.edu/~jones/bcd/decimal.html
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* (with permission from the author, Douglas W. Jones). */
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/* Formats correctly any integer in [0,99999].
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* Outputs from one to five digits depending on input.
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* On i386 gcc 4.1.2 -O2: ~250 bytes of code. */
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static char *put_dec_trunc(char *buf, unsigned q)
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{
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unsigned d3, d2, d1, d0;
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d1 = (q>>4) & 0xf;
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d2 = (q>>8) & 0xf;
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d3 = (q>>12);
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d0 = 6*(d3 + d2 + d1) + (q & 0xf);
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q = (d0 * 0xcd) >> 11;
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d0 = d0 - 10*q;
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*buf++ = d0 + '0'; /* least significant digit */
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d1 = q + 9*d3 + 5*d2 + d1;
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if (d1 != 0) {
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q = (d1 * 0xcd) >> 11;
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d1 = d1 - 10*q;
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*buf++ = d1 + '0'; /* next digit */
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d2 = q + 2*d2;
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if ((d2 != 0) || (d3 != 0)) {
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q = (d2 * 0xd) >> 7;
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d2 = d2 - 10*q;
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*buf++ = d2 + '0'; /* next digit */
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d3 = q + 4*d3;
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if (d3 != 0) {
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q = (d3 * 0xcd) >> 11;
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d3 = d3 - 10*q;
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*buf++ = d3 + '0'; /* next digit */
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if (q != 0)
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*buf++ = q + '0'; /* most sign. digit */
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}
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}
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}
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return buf;
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}
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/* Same with if's removed. Always emits five digits */
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static char *put_dec_full(char *buf, unsigned q)
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{
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/* BTW, if q is in [0,9999], 8-bit ints will be enough, */
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/* but anyway, gcc produces better code with full-sized ints */
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unsigned d3, d2, d1, d0;
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d1 = (q>>4) & 0xf;
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d2 = (q>>8) & 0xf;
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d3 = (q>>12);
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/*
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* Possible ways to approx. divide by 10
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* gcc -O2 replaces multiply with shifts and adds
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* (x * 0xcd) >> 11: 11001101 - shorter code than * 0x67 (on i386)
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* (x * 0x67) >> 10: 1100111
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* (x * 0x34) >> 9: 110100 - same
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* (x * 0x1a) >> 8: 11010 - same
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* (x * 0x0d) >> 7: 1101 - same, shortest code (on i386)
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*/
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d0 = 6*(d3 + d2 + d1) + (q & 0xf);
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q = (d0 * 0xcd) >> 11;
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d0 = d0 - 10*q;
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*buf++ = d0 + '0';
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d1 = q + 9*d3 + 5*d2 + d1;
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q = (d1 * 0xcd) >> 11;
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d1 = d1 - 10*q;
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*buf++ = d1 + '0';
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d2 = q + 2*d2;
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q = (d2 * 0xd) >> 7;
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d2 = d2 - 10*q;
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*buf++ = d2 + '0';
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d3 = q + 4*d3;
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q = (d3 * 0xcd) >> 11; /* - shorter code */
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/* q = (d3 * 0x67) >> 10; - would also work */
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d3 = d3 - 10*q;
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*buf++ = d3 + '0';
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*buf++ = q + '0';
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return buf;
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}
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/* No inlining helps gcc to use registers better */
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static noinline char *put_dec(char *buf, uint64_t num)
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{
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while (1) {
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unsigned rem;
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if (num < 100000)
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return put_dec_trunc(buf, num);
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rem = do_div(num, 100000);
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buf = put_dec_full(buf, rem);
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}
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}
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#define ZEROPAD 1 /* pad with zero */
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#define SIGN 2 /* unsigned/signed long */
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#define PLUS 4 /* show plus */
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#define SPACE 8 /* space if plus */
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#define LEFT 16 /* left justified */
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#define SMALL 32 /* Must be 32 == 0x20 */
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#define SPECIAL 64 /* 0x */
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/*
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* Macro to add a new character to our output string, but only if it will
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* fit. The macro moves to the next character position in the output string.
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*/
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#define ADDCH(str, ch) do { \
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if ((str) < end) \
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*(str) = (ch); \
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++str; \
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} while (0)
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static char *number(char *buf, char *end, u64 num,
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int base, int size, int precision, int type)
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{
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/* we are called with base 8, 10 or 16, only, thus don't need "G..." */
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static const char digits[16] = "0123456789ABCDEF";
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char tmp[66];
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char sign;
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char locase;
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int need_pfx = ((type & SPECIAL) && base != 10);
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int i;
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/* locase = 0 or 0x20. ORing digits or letters with 'locase'
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* produces same digits or (maybe lowercased) letters */
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locase = (type & SMALL);
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if (type & LEFT)
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type &= ~ZEROPAD;
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sign = 0;
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if (type & SIGN) {
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if ((s64) num < 0) {
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sign = '-';
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num = -(s64) num;
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size--;
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} else if (type & PLUS) {
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sign = '+';
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size--;
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} else if (type & SPACE) {
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sign = ' ';
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size--;
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}
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}
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if (need_pfx) {
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size--;
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if (base == 16)
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size--;
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}
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/* generate full string in tmp[], in reverse order */
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i = 0;
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if (num == 0)
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tmp[i++] = '0';
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/* Generic code, for any base:
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else do {
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tmp[i++] = (digits[do_div(num,base)] | locase);
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} while (num != 0);
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*/
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else if (base != 10) { /* 8 or 16 */
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int mask = base - 1;
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int shift = 3;
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if (base == 16)
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shift = 4;
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do {
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tmp[i++] = (digits[((unsigned char)num) & mask]
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| locase);
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num >>= shift;
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} while (num);
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} else { /* base 10 */
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i = put_dec(tmp, num) - tmp;
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}
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/* printing 100 using %2d gives "100", not "00" */
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if (i > precision)
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precision = i;
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/* leading space padding */
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size -= precision;
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if (!(type & (ZEROPAD + LEFT))) {
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while (--size >= 0)
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ADDCH(buf, ' ');
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}
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/* sign */
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if (sign)
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ADDCH(buf, sign);
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/* "0x" / "0" prefix */
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if (need_pfx) {
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ADDCH(buf, '0');
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if (base == 16)
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ADDCH(buf, 'X' | locase);
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}
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/* zero or space padding */
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if (!(type & LEFT)) {
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char c = (type & ZEROPAD) ? '0' : ' ';
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while (--size >= 0)
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ADDCH(buf, c);
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}
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/* hmm even more zero padding? */
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while (i <= --precision)
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ADDCH(buf, '0');
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/* actual digits of result */
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while (--i >= 0)
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ADDCH(buf, tmp[i]);
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/* trailing space padding */
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while (--size >= 0)
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ADDCH(buf, ' ');
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return buf;
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}
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static char *string(char *buf, char *end, char *s, int field_width,
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int precision, int flags)
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{
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int len, i;
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if (s == NULL)
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s = "<NULL>";
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len = strnlen(s, precision);
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if (!(flags & LEFT))
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while (len < field_width--)
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ADDCH(buf, ' ');
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for (i = 0; i < len; ++i)
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ADDCH(buf, *s++);
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while (len < field_width--)
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ADDCH(buf, ' ');
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return buf;
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}
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/* U-Boot uses UTF-16 strings in the EFI context only. */
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#if CONFIG_IS_ENABLED(EFI_LOADER) && !defined(API_BUILD)
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static char *string16(char *buf, char *end, u16 *s, int field_width,
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int precision, int flags)
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{
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const u16 *str = s ? s : L"<NULL>";
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ssize_t i, len = utf16_strnlen(str, precision);
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if (!(flags & LEFT))
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for (; len < field_width; --field_width)
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ADDCH(buf, ' ');
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for (i = 0; i < len && buf + utf16_utf8_strnlen(str, 1) <= end; ++i) {
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s32 s = utf16_get(&str);
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if (s < 0)
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s = '?';
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utf8_put(s, &buf);
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}
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for (; len < field_width; --field_width)
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ADDCH(buf, ' ');
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return buf;
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}
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#if CONFIG_IS_ENABLED(EFI_DEVICE_PATH_TO_TEXT)
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static char *device_path_string(char *buf, char *end, void *dp, int field_width,
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int precision, int flags)
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{
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u16 *str;
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/* If dp == NULL output the string '<NULL>' */
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if (!dp)
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return string16(buf, end, dp, field_width, precision, flags);
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str = efi_dp_str((struct efi_device_path *)dp);
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if (!str)
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return ERR_PTR(-ENOMEM);
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buf = string16(buf, end, str, field_width, precision, flags);
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efi_free_pool(str);
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return buf;
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}
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#endif
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#endif
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static char *mac_address_string(char *buf, char *end, u8 *addr, int field_width,
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int precision, int flags)
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{
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/* (6 * 2 hex digits), 5 colons and trailing zero */
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char mac_addr[6 * 3];
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char *p = mac_addr;
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int i;
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for (i = 0; i < 6; i++) {
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p = hex_byte_pack(p, addr[i]);
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if (!(flags & SPECIAL) && i != 5)
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*p++ = ':';
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}
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*p = '\0';
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return string(buf, end, mac_addr, field_width, precision,
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flags & ~SPECIAL);
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}
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static char *ip6_addr_string(char *buf, char *end, u8 *addr, int field_width,
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int precision, int flags)
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{
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/* (8 * 4 hex digits), 7 colons and trailing zero */
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char ip6_addr[8 * 5];
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char *p = ip6_addr;
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int i;
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for (i = 0; i < 8; i++) {
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p = hex_byte_pack(p, addr[2 * i]);
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p = hex_byte_pack(p, addr[2 * i + 1]);
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if (!(flags & SPECIAL) && i != 7)
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*p++ = ':';
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}
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*p = '\0';
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return string(buf, end, ip6_addr, field_width, precision,
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flags & ~SPECIAL);
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}
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static char *ip4_addr_string(char *buf, char *end, u8 *addr, int field_width,
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int precision, int flags)
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{
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/* (4 * 3 decimal digits), 3 dots and trailing zero */
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char ip4_addr[4 * 4];
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char temp[3]; /* hold each IP quad in reverse order */
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char *p = ip4_addr;
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int i, digits;
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for (i = 0; i < 4; i++) {
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digits = put_dec_trunc(temp, addr[i]) - temp;
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/* reverse the digits in the quad */
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while (digits--)
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*p++ = temp[digits];
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if (i != 3)
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*p++ = '.';
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}
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*p = '\0';
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return string(buf, end, ip4_addr, field_width, precision,
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flags & ~SPECIAL);
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}
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#ifdef CONFIG_LIB_UUID
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/*
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* This works (roughly) the same way as Linux's.
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*
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* %pUb: 01020304-0506-0708-090a-0b0c0d0e0f10
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* %pUB: 01020304-0506-0708-090A-0B0C0D0E0F10
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* %pUl: 04030201-0605-0807-090a-0b0c0d0e0f10
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* %pUL: 04030201-0605-0807-090A-0B0C0D0E0F10
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*/
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static char *uuid_string(char *buf, char *end, u8 *addr, int field_width,
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int precision, int flags, const char *fmt)
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{
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char uuid[UUID_STR_LEN + 1];
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int str_format;
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switch (*(++fmt)) {
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case 'L':
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str_format = UUID_STR_FORMAT_GUID | UUID_STR_UPPER_CASE;
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break;
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case 'l':
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str_format = UUID_STR_FORMAT_GUID;
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break;
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case 'B':
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str_format = UUID_STR_FORMAT_STD | UUID_STR_UPPER_CASE;
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break;
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default:
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str_format = UUID_STR_FORMAT_STD;
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break;
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}
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if (addr)
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uuid_bin_to_str(addr, uuid, str_format);
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else
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strcpy(uuid, "<NULL>");
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return string(buf, end, uuid, field_width, precision, flags);
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}
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#endif
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/*
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* Show a '%p' thing. A kernel extension is that the '%p' is followed
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* by an extra set of alphanumeric characters that are extended format
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* specifiers.
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*
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* Right now we handle:
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*
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* - 'M' For a 6-byte MAC address, it prints the address in the
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* usual colon-separated hex notation
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* - 'I' [46] for IPv4/IPv6 addresses printed in the usual way (dot-separated
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* decimal for v4 and colon separated network-order 16 bit hex for v6)
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* - 'i' [46] for 'raw' IPv4/IPv6 addresses, IPv6 omits the colons, IPv4 is
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* currently the same
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*
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* Note: IPv6 support is currently if(0)'ed out. If you ever need
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* %pI6, please add an IPV6 Kconfig knob, make your code select or
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* depend on that, and change the 0 below to CONFIG_IS_ENABLED(IPV6).
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*/
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static char *pointer(const char *fmt, char *buf, char *end, void *ptr,
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int field_width, int precision, int flags)
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{
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u64 num = (uintptr_t)ptr;
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/*
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* Being a boot loader, we explicitly allow pointers to
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* (physical) address null.
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*/
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#if 0
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if (!ptr)
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return string(buf, end, "(null)", field_width, precision,
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flags);
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#endif
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switch (*fmt) {
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/* Device paths only exist in the EFI context. */
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#if CONFIG_IS_ENABLED(EFI_DEVICE_PATH_TO_TEXT) && !defined(API_BUILD)
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case 'D':
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return device_path_string(buf, end, ptr, field_width,
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precision, flags);
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#endif
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case 'a':
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flags |= SPECIAL | ZEROPAD;
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switch (fmt[1]) {
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case 'p':
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default:
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field_width = sizeof(phys_addr_t) * 2 + 2;
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num = *(phys_addr_t *)ptr;
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break;
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}
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break;
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case 'm':
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flags |= SPECIAL;
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/* Fallthrough */
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case 'M':
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return mac_address_string(buf, end, ptr, field_width,
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precision, flags);
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case 'i':
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flags |= SPECIAL;
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/* Fallthrough */
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case 'I':
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/* %pI6 currently unused */
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if (0 && fmt[1] == '6')
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return ip6_addr_string(buf, end, ptr, field_width,
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precision, flags);
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if (fmt[1] == '4')
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return ip4_addr_string(buf, end, ptr, field_width,
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precision, flags);
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flags &= ~SPECIAL;
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break;
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#ifdef CONFIG_LIB_UUID
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case 'U':
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return uuid_string(buf, end, ptr, field_width, precision,
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flags, fmt);
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#endif
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default:
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break;
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}
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flags |= SMALL;
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if (field_width == -1) {
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field_width = 2*sizeof(void *);
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flags |= ZEROPAD;
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}
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return number(buf, end, num, 16, field_width, precision, flags);
|
|
}
|
|
|
|
static int vsnprintf_internal(char *buf, size_t size, const char *fmt,
|
|
va_list args)
|
|
{
|
|
u64 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 */
|
|
char *end = buf + size;
|
|
|
|
/* Make sure end is always >= buf - do we want this in U-Boot? */
|
|
if (end < buf) {
|
|
end = ((void *)-1);
|
|
size = end - buf;
|
|
}
|
|
str = buf;
|
|
|
|
for (; *fmt ; ++fmt) {
|
|
if (*fmt != '%') {
|
|
ADDCH(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)
|
|
ADDCH(str, ' ');
|
|
}
|
|
ADDCH(str, (unsigned char) va_arg(args, int));
|
|
while (--field_width > 0)
|
|
ADDCH(str, ' ');
|
|
continue;
|
|
|
|
case 's':
|
|
/* U-Boot uses UTF-16 strings in the EFI context only. */
|
|
#if CONFIG_IS_ENABLED(EFI_LOADER) && !defined(API_BUILD)
|
|
if (qualifier == 'l') {
|
|
str = string16(str, end, va_arg(args, u16 *),
|
|
field_width, precision, flags);
|
|
} else
|
|
#endif
|
|
{
|
|
str = string(str, end, va_arg(args, char *),
|
|
field_width, precision, flags);
|
|
}
|
|
continue;
|
|
|
|
case 'p':
|
|
str = pointer(fmt + 1, str, end,
|
|
va_arg(args, void *),
|
|
field_width, precision, flags);
|
|
if (IS_ERR(str))
|
|
return PTR_ERR(str);
|
|
/* 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 '%':
|
|
ADDCH(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:
|
|
ADDCH(str, '%');
|
|
if (*fmt)
|
|
ADDCH(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, end, num, base, field_width, precision,
|
|
flags);
|
|
}
|
|
|
|
if (size > 0) {
|
|
ADDCH(str, '\0');
|
|
if (str > end)
|
|
end[-1] = '\0';
|
|
--str;
|
|
}
|
|
/* the trailing null byte doesn't count towards the total */
|
|
return str - buf;
|
|
}
|
|
|
|
int vsnprintf(char *buf, size_t size, const char *fmt,
|
|
va_list args)
|
|
{
|
|
return vsnprintf_internal(buf, size, fmt, args);
|
|
}
|
|
|
|
int vscnprintf(char *buf, size_t size, const char *fmt, va_list args)
|
|
{
|
|
int i;
|
|
|
|
i = vsnprintf(buf, size, fmt, args);
|
|
|
|
if (likely(i < size))
|
|
return i;
|
|
if (size != 0)
|
|
return size - 1;
|
|
return 0;
|
|
}
|
|
|
|
int snprintf(char *buf, size_t size, const char *fmt, ...)
|
|
{
|
|
va_list args;
|
|
int i;
|
|
|
|
va_start(args, fmt);
|
|
i = vsnprintf(buf, size, fmt, args);
|
|
va_end(args);
|
|
|
|
return i;
|
|
}
|
|
|
|
int scnprintf(char *buf, size_t size, const char *fmt, ...)
|
|
{
|
|
va_list args;
|
|
int i;
|
|
|
|
va_start(args, fmt);
|
|
i = vscnprintf(buf, size, fmt, args);
|
|
va_end(args);
|
|
|
|
return i;
|
|
}
|
|
|
|
/**
|
|
* Format a string and place it in a buffer (va_list version)
|
|
*
|
|
* @param buf The buffer to place the result into
|
|
* @param fmt The format string to use
|
|
* @param args Arguments for the format string
|
|
*
|
|
* The function returns the number of characters written
|
|
* into @buf. Use vsnprintf() or vscnprintf() in order to avoid
|
|
* buffer overflows.
|
|
*
|
|
* If you're not already dealing with a va_list consider using sprintf().
|
|
*/
|
|
int vsprintf(char *buf, const char *fmt, va_list args)
|
|
{
|
|
return vsnprintf_internal(buf, INT_MAX, fmt, args);
|
|
}
|
|
|
|
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;
|
|
}
|
|
|
|
#if CONFIG_IS_ENABLED(PRINTF)
|
|
int printf(const char *fmt, ...)
|
|
{
|
|
va_list args;
|
|
uint i;
|
|
|
|
va_start(args, fmt);
|
|
i = vprintf(fmt, args);
|
|
va_end(args);
|
|
|
|
return i;
|
|
}
|
|
|
|
int vprintf(const char *fmt, va_list args)
|
|
{
|
|
uint i;
|
|
char printbuffer[CONFIG_SYS_PBSIZE];
|
|
|
|
/*
|
|
* For this to work, printbuffer must be larger than
|
|
* anything we ever want to print.
|
|
*/
|
|
i = vscnprintf(printbuffer, sizeof(printbuffer), fmt, args);
|
|
|
|
/* Handle error */
|
|
if (i <= 0)
|
|
return i;
|
|
/* Print the string */
|
|
puts(printbuffer);
|
|
return i;
|
|
}
|
|
#endif
|
|
|
|
char *simple_itoa(ulong i)
|
|
{
|
|
/* 21 digits plus null terminator, good for 64-bit or smaller ints */
|
|
static char local[22];
|
|
char *p = &local[21];
|
|
|
|
*p-- = '\0';
|
|
do {
|
|
*p-- = '0' + i % 10;
|
|
i /= 10;
|
|
} while (i > 0);
|
|
return p + 1;
|
|
}
|
|
|
|
/* We don't seem to have %'d in U-Boot */
|
|
void print_grouped_ull(unsigned long long int_val, int digits)
|
|
{
|
|
char str[21], *s;
|
|
int grab = 3;
|
|
|
|
digits = (digits + 2) / 3;
|
|
sprintf(str, "%*llu", digits * 3, int_val);
|
|
for (s = str; *s; s += grab) {
|
|
if (s != str)
|
|
putc(s[-1] != ' ' ? ',' : ' ');
|
|
printf("%.*s", grab, s);
|
|
grab = 3;
|
|
}
|
|
}
|
|
|
|
bool str2off(const char *p, loff_t *num)
|
|
{
|
|
char *endptr;
|
|
|
|
*num = simple_strtoull(p, &endptr, 16);
|
|
return *p != '\0' && *endptr == '\0';
|
|
}
|
|
|
|
bool str2long(const char *p, ulong *num)
|
|
{
|
|
char *endptr;
|
|
|
|
*num = hextoul(p, &endptr);
|
|
return *p != '\0' && *endptr == '\0';
|
|
}
|
|
|
|
char *strmhz(char *buf, unsigned long hz)
|
|
{
|
|
long l, n;
|
|
long m;
|
|
|
|
n = DIV_ROUND_CLOSEST(hz, 1000) / 1000L;
|
|
l = sprintf(buf, "%ld", n);
|
|
|
|
hz -= n * 1000000L;
|
|
m = DIV_ROUND_CLOSEST(hz, 1000L);
|
|
if (m != 0)
|
|
sprintf(buf + l, ".%03ld", m);
|
|
|
|
return buf;
|
|
}
|