178acc472SPeter Tyser /*
278acc472SPeter Tyser * linux/lib/vsprintf.c
378acc472SPeter Tyser *
478acc472SPeter Tyser * Copyright (C) 1991, 1992 Linus Torvalds
578acc472SPeter Tyser */
678acc472SPeter Tyser
778acc472SPeter Tyser /* vsprintf.c -- Lars Wirzenius & Linus Torvalds. */
878acc472SPeter Tyser /*
978acc472SPeter Tyser * Wirzenius wrote this portably, Torvalds fucked it up :-)
103cce8a54SSimon Glass *
113cce8a54SSimon Glass * from hush: simple_itoa() was lifted from boa-0.93.15
1278acc472SPeter Tyser */
1378acc472SPeter Tyser
1478acc472SPeter Tyser #include <common.h>
15274325c5SRob Clark #include <charset.h>
16256060e4SHeinrich Schuchardt #include <efi_loader.h>
1778acc472SPeter Tyser #include <div64.h>
18f8c987f8SAlexey Brodkin #include <hexdump.h>
19256060e4SHeinrich Schuchardt #include <uuid.h>
20256060e4SHeinrich Schuchardt #include <stdarg.h>
21256060e4SHeinrich Schuchardt #include <linux/ctype.h>
22256060e4SHeinrich Schuchardt #include <linux/err.h>
23256060e4SHeinrich Schuchardt #include <linux/types.h>
24256060e4SHeinrich Schuchardt #include <linux/string.h>
25256060e4SHeinrich Schuchardt
2678acc472SPeter Tyser #define noinline __attribute__((noinline))
2778acc472SPeter Tyser
2878acc472SPeter Tyser /* we use this so that we can do without the ctype library */
2978acc472SPeter Tyser #define is_digit(c) ((c) >= '0' && (c) <= '9')
3078acc472SPeter Tyser
skip_atoi(const char ** s)3178acc472SPeter Tyser static int skip_atoi(const char **s)
3278acc472SPeter Tyser {
3378acc472SPeter Tyser int i = 0;
3478acc472SPeter Tyser
3578acc472SPeter Tyser while (is_digit(**s))
3678acc472SPeter Tyser i = i * 10 + *((*s)++) - '0';
378acdae68SDaniel Schwierzeck
3878acc472SPeter Tyser return i;
3978acc472SPeter Tyser }
4078acc472SPeter Tyser
4178acc472SPeter Tyser /* Decimal conversion is by far the most typical, and is used
4278acc472SPeter Tyser * for /proc and /sys data. This directly impacts e.g. top performance
4378acc472SPeter Tyser * with many processes running. We optimize it for speed
4478acc472SPeter Tyser * using code from
4578acc472SPeter Tyser * http://www.cs.uiowa.edu/~jones/bcd/decimal.html
4678acc472SPeter Tyser * (with permission from the author, Douglas W. Jones). */
4778acc472SPeter Tyser
4878acc472SPeter Tyser /* Formats correctly any integer in [0,99999].
4978acc472SPeter Tyser * Outputs from one to five digits depending on input.
5078acc472SPeter Tyser * On i386 gcc 4.1.2 -O2: ~250 bytes of code. */
put_dec_trunc(char * buf,unsigned q)5178acc472SPeter Tyser static char *put_dec_trunc(char *buf, unsigned q)
5278acc472SPeter Tyser {
5378acc472SPeter Tyser unsigned d3, d2, d1, d0;
5478acc472SPeter Tyser d1 = (q>>4) & 0xf;
5578acc472SPeter Tyser d2 = (q>>8) & 0xf;
5678acc472SPeter Tyser d3 = (q>>12);
5778acc472SPeter Tyser
5878acc472SPeter Tyser d0 = 6*(d3 + d2 + d1) + (q & 0xf);
5978acc472SPeter Tyser q = (d0 * 0xcd) >> 11;
6078acc472SPeter Tyser d0 = d0 - 10*q;
6178acc472SPeter Tyser *buf++ = d0 + '0'; /* least significant digit */
6278acc472SPeter Tyser d1 = q + 9*d3 + 5*d2 + d1;
6378acc472SPeter Tyser if (d1 != 0) {
6478acc472SPeter Tyser q = (d1 * 0xcd) >> 11;
6578acc472SPeter Tyser d1 = d1 - 10*q;
6678acc472SPeter Tyser *buf++ = d1 + '0'; /* next digit */
6778acc472SPeter Tyser
6878acc472SPeter Tyser d2 = q + 2*d2;
6978acc472SPeter Tyser if ((d2 != 0) || (d3 != 0)) {
7078acc472SPeter Tyser q = (d2 * 0xd) >> 7;
7178acc472SPeter Tyser d2 = d2 - 10*q;
7278acc472SPeter Tyser *buf++ = d2 + '0'; /* next digit */
7378acc472SPeter Tyser
7478acc472SPeter Tyser d3 = q + 4*d3;
7578acc472SPeter Tyser if (d3 != 0) {
7678acc472SPeter Tyser q = (d3 * 0xcd) >> 11;
7778acc472SPeter Tyser d3 = d3 - 10*q;
7878acc472SPeter Tyser *buf++ = d3 + '0'; /* next digit */
7978acc472SPeter Tyser if (q != 0)
8078acc472SPeter Tyser *buf++ = q + '0'; /* most sign. digit */
8178acc472SPeter Tyser }
8278acc472SPeter Tyser }
8378acc472SPeter Tyser }
8478acc472SPeter Tyser return buf;
8578acc472SPeter Tyser }
8678acc472SPeter Tyser /* Same with if's removed. Always emits five digits */
put_dec_full(char * buf,unsigned q)8778acc472SPeter Tyser static char *put_dec_full(char *buf, unsigned q)
8878acc472SPeter Tyser {
8978acc472SPeter Tyser /* BTW, if q is in [0,9999], 8-bit ints will be enough, */
9078acc472SPeter Tyser /* but anyway, gcc produces better code with full-sized ints */
9178acc472SPeter Tyser unsigned d3, d2, d1, d0;
9278acc472SPeter Tyser d1 = (q>>4) & 0xf;
9378acc472SPeter Tyser d2 = (q>>8) & 0xf;
9478acc472SPeter Tyser d3 = (q>>12);
9578acc472SPeter Tyser
9678acc472SPeter Tyser /*
9778acc472SPeter Tyser * Possible ways to approx. divide by 10
9878acc472SPeter Tyser * gcc -O2 replaces multiply with shifts and adds
9978acc472SPeter Tyser * (x * 0xcd) >> 11: 11001101 - shorter code than * 0x67 (on i386)
10078acc472SPeter Tyser * (x * 0x67) >> 10: 1100111
10178acc472SPeter Tyser * (x * 0x34) >> 9: 110100 - same
10278acc472SPeter Tyser * (x * 0x1a) >> 8: 11010 - same
10378acc472SPeter Tyser * (x * 0x0d) >> 7: 1101 - same, shortest code (on i386)
10478acc472SPeter Tyser */
10578acc472SPeter Tyser
10678acc472SPeter Tyser d0 = 6*(d3 + d2 + d1) + (q & 0xf);
10778acc472SPeter Tyser q = (d0 * 0xcd) >> 11;
10878acc472SPeter Tyser d0 = d0 - 10*q;
10978acc472SPeter Tyser *buf++ = d0 + '0';
11078acc472SPeter Tyser d1 = q + 9*d3 + 5*d2 + d1;
11178acc472SPeter Tyser q = (d1 * 0xcd) >> 11;
11278acc472SPeter Tyser d1 = d1 - 10*q;
11378acc472SPeter Tyser *buf++ = d1 + '0';
11478acc472SPeter Tyser
11578acc472SPeter Tyser d2 = q + 2*d2;
11678acc472SPeter Tyser q = (d2 * 0xd) >> 7;
11778acc472SPeter Tyser d2 = d2 - 10*q;
11878acc472SPeter Tyser *buf++ = d2 + '0';
11978acc472SPeter Tyser
12078acc472SPeter Tyser d3 = q + 4*d3;
12178acc472SPeter Tyser q = (d3 * 0xcd) >> 11; /* - shorter code */
12278acc472SPeter Tyser /* q = (d3 * 0x67) >> 10; - would also work */
12378acc472SPeter Tyser d3 = d3 - 10*q;
12478acc472SPeter Tyser *buf++ = d3 + '0';
12578acc472SPeter Tyser *buf++ = q + '0';
12678acc472SPeter Tyser return buf;
12778acc472SPeter Tyser }
12878acc472SPeter Tyser /* No inlining helps gcc to use registers better */
put_dec(char * buf,uint64_t num)1296bf67259SSimon Glass static noinline char *put_dec(char *buf, uint64_t num)
13078acc472SPeter Tyser {
13178acc472SPeter Tyser while (1) {
13278acc472SPeter Tyser unsigned rem;
13378acc472SPeter Tyser if (num < 100000)
13478acc472SPeter Tyser return put_dec_trunc(buf, num);
13578acc472SPeter Tyser rem = do_div(num, 100000);
13678acc472SPeter Tyser buf = put_dec_full(buf, rem);
13778acc472SPeter Tyser }
13878acc472SPeter Tyser }
13978acc472SPeter Tyser
14078acc472SPeter Tyser #define ZEROPAD 1 /* pad with zero */
14178acc472SPeter Tyser #define SIGN 2 /* unsigned/signed long */
14278acc472SPeter Tyser #define PLUS 4 /* show plus */
14378acc472SPeter Tyser #define SPACE 8 /* space if plus */
14478acc472SPeter Tyser #define LEFT 16 /* left justified */
14578acc472SPeter Tyser #define SMALL 32 /* Must be 32 == 0x20 */
14678acc472SPeter Tyser #define SPECIAL 64 /* 0x */
14778acc472SPeter Tyser
148046a37bdSSonny Rao /*
149046a37bdSSonny Rao * Macro to add a new character to our output string, but only if it will
150046a37bdSSonny Rao * fit. The macro moves to the next character position in the output string.
151046a37bdSSonny Rao */
152046a37bdSSonny Rao #define ADDCH(str, ch) do { \
153046a37bdSSonny Rao if ((str) < end) \
154046a37bdSSonny Rao *(str) = (ch); \
155046a37bdSSonny Rao ++str; \
156046a37bdSSonny Rao } while (0)
157046a37bdSSonny Rao
number(char * buf,char * end,u64 num,int base,int size,int precision,int type)1587b64f66cSDaniel Schwierzeck static char *number(char *buf, char *end, u64 num,
159046a37bdSSonny Rao int base, int size, int precision, int type)
16078acc472SPeter Tyser {
16178acc472SPeter Tyser /* we are called with base 8, 10 or 16, only, thus don't need "G..." */
1628acdae68SDaniel Schwierzeck static const char digits[16] = "0123456789ABCDEF";
16378acc472SPeter Tyser
16478acc472SPeter Tyser char tmp[66];
16578acc472SPeter Tyser char sign;
16678acc472SPeter Tyser char locase;
16778acc472SPeter Tyser int need_pfx = ((type & SPECIAL) && base != 10);
16878acc472SPeter Tyser int i;
16978acc472SPeter Tyser
17078acc472SPeter Tyser /* locase = 0 or 0x20. ORing digits or letters with 'locase'
17178acc472SPeter Tyser * produces same digits or (maybe lowercased) letters */
17278acc472SPeter Tyser locase = (type & SMALL);
17378acc472SPeter Tyser if (type & LEFT)
17478acc472SPeter Tyser type &= ~ZEROPAD;
17578acc472SPeter Tyser sign = 0;
17678acc472SPeter Tyser if (type & SIGN) {
1777b64f66cSDaniel Schwierzeck if ((s64) num < 0) {
17878acc472SPeter Tyser sign = '-';
1797b64f66cSDaniel Schwierzeck num = -(s64) num;
18078acc472SPeter Tyser size--;
18178acc472SPeter Tyser } else if (type & PLUS) {
18278acc472SPeter Tyser sign = '+';
18378acc472SPeter Tyser size--;
18478acc472SPeter Tyser } else if (type & SPACE) {
18578acc472SPeter Tyser sign = ' ';
18678acc472SPeter Tyser size--;
18778acc472SPeter Tyser }
18878acc472SPeter Tyser }
18978acc472SPeter Tyser if (need_pfx) {
19078acc472SPeter Tyser size--;
19178acc472SPeter Tyser if (base == 16)
19278acc472SPeter Tyser size--;
19378acc472SPeter Tyser }
19478acc472SPeter Tyser
19578acc472SPeter Tyser /* generate full string in tmp[], in reverse order */
19678acc472SPeter Tyser i = 0;
19778acc472SPeter Tyser if (num == 0)
19878acc472SPeter Tyser tmp[i++] = '0';
19978acc472SPeter Tyser /* Generic code, for any base:
20078acc472SPeter Tyser else do {
20178acc472SPeter Tyser tmp[i++] = (digits[do_div(num,base)] | locase);
20278acc472SPeter Tyser } while (num != 0);
20378acc472SPeter Tyser */
20478acc472SPeter Tyser else if (base != 10) { /* 8 or 16 */
20578acc472SPeter Tyser int mask = base - 1;
20678acc472SPeter Tyser int shift = 3;
2078acdae68SDaniel Schwierzeck
2088acdae68SDaniel Schwierzeck if (base == 16)
2098acdae68SDaniel Schwierzeck shift = 4;
2108acdae68SDaniel Schwierzeck
21178acc472SPeter Tyser do {
2128acdae68SDaniel Schwierzeck tmp[i++] = (digits[((unsigned char)num) & mask]
2138acdae68SDaniel Schwierzeck | locase);
21478acc472SPeter Tyser num >>= shift;
21578acc472SPeter Tyser } while (num);
21678acc472SPeter Tyser } else { /* base 10 */
21778acc472SPeter Tyser i = put_dec(tmp, num) - tmp;
21878acc472SPeter Tyser }
21978acc472SPeter Tyser
22078acc472SPeter Tyser /* printing 100 using %2d gives "100", not "00" */
22178acc472SPeter Tyser if (i > precision)
22278acc472SPeter Tyser precision = i;
22378acc472SPeter Tyser /* leading space padding */
22478acc472SPeter Tyser size -= precision;
225046a37bdSSonny Rao if (!(type & (ZEROPAD + LEFT))) {
22678acc472SPeter Tyser while (--size >= 0)
227046a37bdSSonny Rao ADDCH(buf, ' ');
228046a37bdSSonny Rao }
22978acc472SPeter Tyser /* sign */
23078acc472SPeter Tyser if (sign)
231046a37bdSSonny Rao ADDCH(buf, sign);
23278acc472SPeter Tyser /* "0x" / "0" prefix */
23378acc472SPeter Tyser if (need_pfx) {
234046a37bdSSonny Rao ADDCH(buf, '0');
23578acc472SPeter Tyser if (base == 16)
236046a37bdSSonny Rao ADDCH(buf, 'X' | locase);
23778acc472SPeter Tyser }
23878acc472SPeter Tyser /* zero or space padding */
23978acc472SPeter Tyser if (!(type & LEFT)) {
24078acc472SPeter Tyser char c = (type & ZEROPAD) ? '0' : ' ';
241046a37bdSSonny Rao
24278acc472SPeter Tyser while (--size >= 0)
243046a37bdSSonny Rao ADDCH(buf, c);
24478acc472SPeter Tyser }
24578acc472SPeter Tyser /* hmm even more zero padding? */
24678acc472SPeter Tyser while (i <= --precision)
247046a37bdSSonny Rao ADDCH(buf, '0');
24878acc472SPeter Tyser /* actual digits of result */
24978acc472SPeter Tyser while (--i >= 0)
250046a37bdSSonny Rao ADDCH(buf, tmp[i]);
25178acc472SPeter Tyser /* trailing space padding */
25278acc472SPeter Tyser while (--size >= 0)
253046a37bdSSonny Rao ADDCH(buf, ' ');
25478acc472SPeter Tyser return buf;
25578acc472SPeter Tyser }
25678acc472SPeter Tyser
string(char * buf,char * end,char * s,int field_width,int precision,int flags)257046a37bdSSonny Rao static char *string(char *buf, char *end, char *s, int field_width,
258046a37bdSSonny Rao int precision, int flags)
25978acc472SPeter Tyser {
26078acc472SPeter Tyser int len, i;
26178acc472SPeter Tyser
2620eb25768SKim Phillips if (s == NULL)
26378acc472SPeter Tyser s = "<NULL>";
26478acc472SPeter Tyser
26578acc472SPeter Tyser len = strnlen(s, precision);
26678acc472SPeter Tyser
26778acc472SPeter Tyser if (!(flags & LEFT))
26878acc472SPeter Tyser while (len < field_width--)
269046a37bdSSonny Rao ADDCH(buf, ' ');
27078acc472SPeter Tyser for (i = 0; i < len; ++i)
271046a37bdSSonny Rao ADDCH(buf, *s++);
27278acc472SPeter Tyser while (len < field_width--)
273046a37bdSSonny Rao ADDCH(buf, ' ');
27478acc472SPeter Tyser return buf;
27578acc472SPeter Tyser }
27678acc472SPeter Tyser
277fbb3ea80SHeinrich Schuchardt /* U-Boot uses UTF-16 strings in the EFI context only. */
278fbb3ea80SHeinrich Schuchardt #if CONFIG_IS_ENABLED(EFI_LOADER) && !defined(API_BUILD)
string16(char * buf,char * end,u16 * s,int field_width,int precision,int flags)279274325c5SRob Clark static char *string16(char *buf, char *end, u16 *s, int field_width,
280274325c5SRob Clark int precision, int flags)
281274325c5SRob Clark {
2820e66c10aSHeinrich Schuchardt const u16 *str = s ? s : L"<NULL>";
2830e66c10aSHeinrich Schuchardt ssize_t i, len = utf16_strnlen(str, precision);
284274325c5SRob Clark
285274325c5SRob Clark if (!(flags & LEFT))
28631bd711cSHeinrich Schuchardt for (; len < field_width; --field_width)
287274325c5SRob Clark ADDCH(buf, ' ');
2880e66c10aSHeinrich Schuchardt for (i = 0; i < len && buf + utf16_utf8_strnlen(str, 1) <= end; ++i) {
2890e66c10aSHeinrich Schuchardt s32 s = utf16_get(&str);
2900e66c10aSHeinrich Schuchardt
291*60c4454dSHeinrich Schuchardt if (s < 0)
292*60c4454dSHeinrich Schuchardt s = '?';
2930e66c10aSHeinrich Schuchardt utf8_put(s, &buf);
2940e66c10aSHeinrich Schuchardt }
29531bd711cSHeinrich Schuchardt for (; len < field_width; --field_width)
296274325c5SRob Clark ADDCH(buf, ' ');
297274325c5SRob Clark return buf;
298274325c5SRob Clark }
299274325c5SRob Clark
device_path_string(char * buf,char * end,void * dp,int field_width,int precision,int flags)300256060e4SHeinrich Schuchardt static char *device_path_string(char *buf, char *end, void *dp, int field_width,
301256060e4SHeinrich Schuchardt int precision, int flags)
302256060e4SHeinrich Schuchardt {
303256060e4SHeinrich Schuchardt u16 *str;
304256060e4SHeinrich Schuchardt
3055f1ce1d4SHeinrich Schuchardt /* If dp == NULL output the string '<NULL>' */
306256060e4SHeinrich Schuchardt if (!dp)
3075f1ce1d4SHeinrich Schuchardt return string16(buf, end, dp, field_width, precision, flags);
308256060e4SHeinrich Schuchardt
309256060e4SHeinrich Schuchardt str = efi_dp_str((struct efi_device_path *)dp);
310256060e4SHeinrich Schuchardt if (!str)
311256060e4SHeinrich Schuchardt return ERR_PTR(-ENOMEM);
312256060e4SHeinrich Schuchardt
313256060e4SHeinrich Schuchardt buf = string16(buf, end, str, field_width, precision, flags);
314256060e4SHeinrich Schuchardt efi_free_pool(str);
315256060e4SHeinrich Schuchardt return buf;
316256060e4SHeinrich Schuchardt }
317256060e4SHeinrich Schuchardt #endif
318256060e4SHeinrich Schuchardt
31978acc472SPeter Tyser #ifdef CONFIG_CMD_NET
mac_address_string(char * buf,char * end,u8 * addr,int field_width,int precision,int flags)320046a37bdSSonny Rao static char *mac_address_string(char *buf, char *end, u8 *addr, int field_width,
32178acc472SPeter Tyser int precision, int flags)
32278acc472SPeter Tyser {
3238acdae68SDaniel Schwierzeck /* (6 * 2 hex digits), 5 colons and trailing zero */
3248acdae68SDaniel Schwierzeck char mac_addr[6 * 3];
32578acc472SPeter Tyser char *p = mac_addr;
32678acc472SPeter Tyser int i;
32778acc472SPeter Tyser
32878acc472SPeter Tyser for (i = 0; i < 6; i++) {
329f8c987f8SAlexey Brodkin p = hex_byte_pack(p, addr[i]);
33078acc472SPeter Tyser if (!(flags & SPECIAL) && i != 5)
33178acc472SPeter Tyser *p++ = ':';
33278acc472SPeter Tyser }
33378acc472SPeter Tyser *p = '\0';
33478acc472SPeter Tyser
335046a37bdSSonny Rao return string(buf, end, mac_addr, field_width, precision,
336046a37bdSSonny Rao flags & ~SPECIAL);
33778acc472SPeter Tyser }
33878acc472SPeter Tyser
ip6_addr_string(char * buf,char * end,u8 * addr,int field_width,int precision,int flags)339046a37bdSSonny Rao static char *ip6_addr_string(char *buf, char *end, u8 *addr, int field_width,
34078acc472SPeter Tyser int precision, int flags)
34178acc472SPeter Tyser {
3428acdae68SDaniel Schwierzeck /* (8 * 4 hex digits), 7 colons and trailing zero */
3438acdae68SDaniel Schwierzeck char ip6_addr[8 * 5];
34478acc472SPeter Tyser char *p = ip6_addr;
34578acc472SPeter Tyser int i;
34678acc472SPeter Tyser
34778acc472SPeter Tyser for (i = 0; i < 8; i++) {
348f8c987f8SAlexey Brodkin p = hex_byte_pack(p, addr[2 * i]);
349f8c987f8SAlexey Brodkin p = hex_byte_pack(p, addr[2 * i + 1]);
35078acc472SPeter Tyser if (!(flags & SPECIAL) && i != 7)
35178acc472SPeter Tyser *p++ = ':';
35278acc472SPeter Tyser }
35378acc472SPeter Tyser *p = '\0';
35478acc472SPeter Tyser
355046a37bdSSonny Rao return string(buf, end, ip6_addr, field_width, precision,
356046a37bdSSonny Rao flags & ~SPECIAL);
35778acc472SPeter Tyser }
35878acc472SPeter Tyser
ip4_addr_string(char * buf,char * end,u8 * addr,int field_width,int precision,int flags)359046a37bdSSonny Rao static char *ip4_addr_string(char *buf, char *end, u8 *addr, int field_width,
36078acc472SPeter Tyser int precision, int flags)
36178acc472SPeter Tyser {
3628acdae68SDaniel Schwierzeck /* (4 * 3 decimal digits), 3 dots and trailing zero */
3638acdae68SDaniel Schwierzeck char ip4_addr[4 * 4];
36478acc472SPeter Tyser char temp[3]; /* hold each IP quad in reverse order */
36578acc472SPeter Tyser char *p = ip4_addr;
36678acc472SPeter Tyser int i, digits;
36778acc472SPeter Tyser
36878acc472SPeter Tyser for (i = 0; i < 4; i++) {
36978acc472SPeter Tyser digits = put_dec_trunc(temp, addr[i]) - temp;
37078acc472SPeter Tyser /* reverse the digits in the quad */
37178acc472SPeter Tyser while (digits--)
37278acc472SPeter Tyser *p++ = temp[digits];
37378acc472SPeter Tyser if (i != 3)
37478acc472SPeter Tyser *p++ = '.';
37578acc472SPeter Tyser }
37678acc472SPeter Tyser *p = '\0';
37778acc472SPeter Tyser
378046a37bdSSonny Rao return string(buf, end, ip4_addr, field_width, precision,
379046a37bdSSonny Rao flags & ~SPECIAL);
38078acc472SPeter Tyser }
38178acc472SPeter Tyser #endif
38278acc472SPeter Tyser
38322ada0c8SRob Clark #ifdef CONFIG_LIB_UUID
38422ada0c8SRob Clark /*
38522ada0c8SRob Clark * This works (roughly) the same way as linux's, but we currently always
38622ada0c8SRob Clark * print lower-case (ie. we just keep %pUB and %pUL for compat with linux),
38722ada0c8SRob Clark * mostly just because that is what uuid_bin_to_str() supports.
38822ada0c8SRob Clark *
38922ada0c8SRob Clark * %pUb: 01020304-0506-0708-090a-0b0c0d0e0f10
39022ada0c8SRob Clark * %pUl: 04030201-0605-0807-090a-0b0c0d0e0f10
39122ada0c8SRob Clark */
uuid_string(char * buf,char * end,u8 * addr,int field_width,int precision,int flags,const char * fmt)39222ada0c8SRob Clark static char *uuid_string(char *buf, char *end, u8 *addr, int field_width,
39322ada0c8SRob Clark int precision, int flags, const char *fmt)
39422ada0c8SRob Clark {
39522ada0c8SRob Clark char uuid[UUID_STR_LEN + 1];
39622ada0c8SRob Clark int str_format = UUID_STR_FORMAT_STD;
39722ada0c8SRob Clark
39822ada0c8SRob Clark switch (*(++fmt)) {
39922ada0c8SRob Clark case 'L':
40022ada0c8SRob Clark case 'l':
40122ada0c8SRob Clark str_format = UUID_STR_FORMAT_GUID;
40222ada0c8SRob Clark break;
40322ada0c8SRob Clark case 'B':
40422ada0c8SRob Clark case 'b':
40522ada0c8SRob Clark /* this is the default */
40622ada0c8SRob Clark break;
40722ada0c8SRob Clark default:
40822ada0c8SRob Clark break;
40922ada0c8SRob Clark }
41022ada0c8SRob Clark
411d7ae1609SSimon Glass if (addr)
41222ada0c8SRob Clark uuid_bin_to_str(addr, uuid, str_format);
413d7ae1609SSimon Glass else
414d7ae1609SSimon Glass strcpy(uuid, "<NULL>");
41522ada0c8SRob Clark
41622ada0c8SRob Clark return string(buf, end, uuid, field_width, precision, flags);
41722ada0c8SRob Clark }
41822ada0c8SRob Clark #endif
41922ada0c8SRob Clark
42078acc472SPeter Tyser /*
42178acc472SPeter Tyser * Show a '%p' thing. A kernel extension is that the '%p' is followed
42278acc472SPeter Tyser * by an extra set of alphanumeric characters that are extended format
42378acc472SPeter Tyser * specifiers.
42478acc472SPeter Tyser *
42578acc472SPeter Tyser * Right now we handle:
42678acc472SPeter Tyser *
42778acc472SPeter Tyser * - 'M' For a 6-byte MAC address, it prints the address in the
42878acc472SPeter Tyser * usual colon-separated hex notation
42978acc472SPeter Tyser * - 'I' [46] for IPv4/IPv6 addresses printed in the usual way (dot-separated
43078acc472SPeter Tyser * decimal for v4 and colon separated network-order 16 bit hex for v6)
43178acc472SPeter Tyser * - 'i' [46] for 'raw' IPv4/IPv6 addresses, IPv6 omits the colons, IPv4 is
43278acc472SPeter Tyser * currently the same
43378acc472SPeter Tyser *
43478acc472SPeter Tyser * Note: The difference between 'S' and 'F' is that on ia64 and ppc64
43578acc472SPeter Tyser * function pointers are really function descriptors, which contain a
43678acc472SPeter Tyser * pointer to the real address.
43778acc472SPeter Tyser */
pointer(const char * fmt,char * buf,char * end,void * ptr,int field_width,int precision,int flags)438046a37bdSSonny Rao static char *pointer(const char *fmt, char *buf, char *end, void *ptr,
439046a37bdSSonny Rao int field_width, int precision, int flags)
44078acc472SPeter Tyser {
4411eebd14bSThierry Reding u64 num = (uintptr_t)ptr;
4421eebd14bSThierry Reding
443d266f669SWolfgang Denk /*
444d266f669SWolfgang Denk * Being a boot loader, we explicitly allow pointers to
445d266f669SWolfgang Denk * (physical) address null.
446d266f669SWolfgang Denk */
447d266f669SWolfgang Denk #if 0
44878acc472SPeter Tyser if (!ptr)
449046a37bdSSonny Rao return string(buf, end, "(null)", field_width, precision,
450046a37bdSSonny Rao flags);
451d266f669SWolfgang Denk #endif
45278acc472SPeter Tyser
45378acc472SPeter Tyser switch (*fmt) {
4544ddcc4e5SHeinrich Schuchardt /* Device paths only exist in the EFI context. */
4554ddcc4e5SHeinrich Schuchardt #if CONFIG_IS_ENABLED(EFI_LOADER) && !defined(API_BUILD)
456256060e4SHeinrich Schuchardt case 'D':
457256060e4SHeinrich Schuchardt return device_path_string(buf, end, ptr, field_width,
458256060e4SHeinrich Schuchardt precision, flags);
459256060e4SHeinrich Schuchardt #endif
46022ada0c8SRob Clark #ifdef CONFIG_CMD_NET
4611eebd14bSThierry Reding case 'a':
4621eebd14bSThierry Reding flags |= SPECIAL | ZEROPAD;
4631eebd14bSThierry Reding
4641eebd14bSThierry Reding switch (fmt[1]) {
4651eebd14bSThierry Reding case 'p':
4661eebd14bSThierry Reding default:
4671eebd14bSThierry Reding field_width = sizeof(phys_addr_t) * 2 + 2;
4681eebd14bSThierry Reding num = *(phys_addr_t *)ptr;
4691eebd14bSThierry Reding break;
4701eebd14bSThierry Reding }
4711eebd14bSThierry Reding break;
47278acc472SPeter Tyser case 'm':
47378acc472SPeter Tyser flags |= SPECIAL;
47478acc472SPeter Tyser /* Fallthrough */
47578acc472SPeter Tyser case 'M':
476046a37bdSSonny Rao return mac_address_string(buf, end, ptr, field_width,
477046a37bdSSonny Rao precision, flags);
47878acc472SPeter Tyser case 'i':
47978acc472SPeter Tyser flags |= SPECIAL;
48078acc472SPeter Tyser /* Fallthrough */
48178acc472SPeter Tyser case 'I':
48278acc472SPeter Tyser if (fmt[1] == '6')
483046a37bdSSonny Rao return ip6_addr_string(buf, end, ptr, field_width,
484046a37bdSSonny Rao precision, flags);
48578acc472SPeter Tyser if (fmt[1] == '4')
486046a37bdSSonny Rao return ip4_addr_string(buf, end, ptr, field_width,
487046a37bdSSonny Rao precision, flags);
48878acc472SPeter Tyser flags &= ~SPECIAL;
48978acc472SPeter Tyser break;
49078acc472SPeter Tyser #endif
49122ada0c8SRob Clark #ifdef CONFIG_LIB_UUID
49222ada0c8SRob Clark case 'U':
49322ada0c8SRob Clark return uuid_string(buf, end, ptr, field_width, precision,
49422ada0c8SRob Clark flags, fmt);
49522ada0c8SRob Clark #endif
49622ada0c8SRob Clark default:
49722ada0c8SRob Clark break;
49822ada0c8SRob Clark }
49978acc472SPeter Tyser flags |= SMALL;
50078acc472SPeter Tyser if (field_width == -1) {
50178acc472SPeter Tyser field_width = 2*sizeof(void *);
50278acc472SPeter Tyser flags |= ZEROPAD;
50378acc472SPeter Tyser }
5041eebd14bSThierry Reding return number(buf, end, num, 16, field_width, precision, flags);
50578acc472SPeter Tyser }
50678acc472SPeter Tyser
vsnprintf_internal(char * buf,size_t size,const char * fmt,va_list args)507046a37bdSSonny Rao static int vsnprintf_internal(char *buf, size_t size, const char *fmt,
508046a37bdSSonny Rao va_list args)
50978acc472SPeter Tyser {
5107b64f66cSDaniel Schwierzeck u64 num;
51178acc472SPeter Tyser int base;
51278acc472SPeter Tyser char *str;
51378acc472SPeter Tyser
51478acc472SPeter Tyser int flags; /* flags to number() */
51578acc472SPeter Tyser
51678acc472SPeter Tyser int field_width; /* width of output field */
51778acc472SPeter Tyser int precision; /* min. # of digits for integers; max
51878acc472SPeter Tyser number of chars for from string */
51978acc472SPeter Tyser int qualifier; /* 'h', 'l', or 'L' for integer fields */
52078acc472SPeter Tyser /* 'z' support added 23/7/1999 S.H. */
52178acc472SPeter Tyser /* 'z' changed to 'Z' --davidm 1/25/99 */
52278acc472SPeter Tyser /* 't' added for ptrdiff_t */
523046a37bdSSonny Rao char *end = buf + size;
52478acc472SPeter Tyser
525046a37bdSSonny Rao /* Make sure end is always >= buf - do we want this in U-Boot? */
526046a37bdSSonny Rao if (end < buf) {
527046a37bdSSonny Rao end = ((void *)-1);
528046a37bdSSonny Rao size = end - buf;
529046a37bdSSonny Rao }
53078acc472SPeter Tyser str = buf;
53178acc472SPeter Tyser
53278acc472SPeter Tyser for (; *fmt ; ++fmt) {
53378acc472SPeter Tyser if (*fmt != '%') {
534046a37bdSSonny Rao ADDCH(str, *fmt);
53578acc472SPeter Tyser continue;
53678acc472SPeter Tyser }
53778acc472SPeter Tyser
53878acc472SPeter Tyser /* process flags */
53978acc472SPeter Tyser flags = 0;
54078acc472SPeter Tyser repeat:
54178acc472SPeter Tyser ++fmt; /* this also skips first '%' */
54278acc472SPeter Tyser switch (*fmt) {
5438acdae68SDaniel Schwierzeck case '-':
5448acdae68SDaniel Schwierzeck flags |= LEFT;
5458acdae68SDaniel Schwierzeck goto repeat;
5468acdae68SDaniel Schwierzeck case '+':
5478acdae68SDaniel Schwierzeck flags |= PLUS;
5488acdae68SDaniel Schwierzeck goto repeat;
5498acdae68SDaniel Schwierzeck case ' ':
5508acdae68SDaniel Schwierzeck flags |= SPACE;
5518acdae68SDaniel Schwierzeck goto repeat;
5528acdae68SDaniel Schwierzeck case '#':
5538acdae68SDaniel Schwierzeck flags |= SPECIAL;
5548acdae68SDaniel Schwierzeck goto repeat;
5558acdae68SDaniel Schwierzeck case '0':
5568acdae68SDaniel Schwierzeck flags |= ZEROPAD;
5578acdae68SDaniel Schwierzeck goto repeat;
55878acc472SPeter Tyser }
55978acc472SPeter Tyser
56078acc472SPeter Tyser /* get field width */
56178acc472SPeter Tyser field_width = -1;
56278acc472SPeter Tyser if (is_digit(*fmt))
56378acc472SPeter Tyser field_width = skip_atoi(&fmt);
56478acc472SPeter Tyser else if (*fmt == '*') {
56578acc472SPeter Tyser ++fmt;
56678acc472SPeter Tyser /* it's the next argument */
56778acc472SPeter Tyser field_width = va_arg(args, int);
56878acc472SPeter Tyser if (field_width < 0) {
56978acc472SPeter Tyser field_width = -field_width;
57078acc472SPeter Tyser flags |= LEFT;
57178acc472SPeter Tyser }
57278acc472SPeter Tyser }
57378acc472SPeter Tyser
57478acc472SPeter Tyser /* get the precision */
57578acc472SPeter Tyser precision = -1;
57678acc472SPeter Tyser if (*fmt == '.') {
57778acc472SPeter Tyser ++fmt;
57878acc472SPeter Tyser if (is_digit(*fmt))
57978acc472SPeter Tyser precision = skip_atoi(&fmt);
58078acc472SPeter Tyser else if (*fmt == '*') {
58178acc472SPeter Tyser ++fmt;
58278acc472SPeter Tyser /* it's the next argument */
58378acc472SPeter Tyser precision = va_arg(args, int);
58478acc472SPeter Tyser }
58578acc472SPeter Tyser if (precision < 0)
58678acc472SPeter Tyser precision = 0;
58778acc472SPeter Tyser }
58878acc472SPeter Tyser
58978acc472SPeter Tyser /* get the conversion qualifier */
59078acc472SPeter Tyser qualifier = -1;
59178acc472SPeter Tyser if (*fmt == 'h' || *fmt == 'l' || *fmt == 'L' ||
59278acc472SPeter Tyser *fmt == 'Z' || *fmt == 'z' || *fmt == 't') {
59378acc472SPeter Tyser qualifier = *fmt;
59478acc472SPeter Tyser ++fmt;
59578acc472SPeter Tyser if (qualifier == 'l' && *fmt == 'l') {
59678acc472SPeter Tyser qualifier = 'L';
59778acc472SPeter Tyser ++fmt;
59878acc472SPeter Tyser }
59978acc472SPeter Tyser }
60078acc472SPeter Tyser
60178acc472SPeter Tyser /* default base */
60278acc472SPeter Tyser base = 10;
60378acc472SPeter Tyser
60478acc472SPeter Tyser switch (*fmt) {
60578acc472SPeter Tyser case 'c':
606046a37bdSSonny Rao if (!(flags & LEFT)) {
60778acc472SPeter Tyser while (--field_width > 0)
608046a37bdSSonny Rao ADDCH(str, ' ');
609046a37bdSSonny Rao }
610046a37bdSSonny Rao ADDCH(str, (unsigned char) va_arg(args, int));
61178acc472SPeter Tyser while (--field_width > 0)
612046a37bdSSonny Rao ADDCH(str, ' ');
61378acc472SPeter Tyser continue;
61478acc472SPeter Tyser
61578acc472SPeter Tyser case 's':
616fbb3ea80SHeinrich Schuchardt /* U-Boot uses UTF-16 strings in the EFI context only. */
617fbb3ea80SHeinrich Schuchardt #if CONFIG_IS_ENABLED(EFI_LOADER) && !defined(API_BUILD)
618fbb3ea80SHeinrich Schuchardt if (qualifier == 'l') {
619274325c5SRob Clark str = string16(str, end, va_arg(args, u16 *),
620274325c5SRob Clark field_width, precision, flags);
621fbb3ea80SHeinrich Schuchardt } else
622fbb3ea80SHeinrich Schuchardt #endif
623fbb3ea80SHeinrich Schuchardt {
624046a37bdSSonny Rao str = string(str, end, va_arg(args, char *),
625046a37bdSSonny Rao field_width, precision, flags);
626274325c5SRob Clark }
62778acc472SPeter Tyser continue;
62878acc472SPeter Tyser
62978acc472SPeter Tyser case 'p':
630046a37bdSSonny Rao str = pointer(fmt + 1, str, end,
63178acc472SPeter Tyser va_arg(args, void *),
63278acc472SPeter Tyser field_width, precision, flags);
633256060e4SHeinrich Schuchardt if (IS_ERR(str))
634256060e4SHeinrich Schuchardt return PTR_ERR(str);
63578acc472SPeter Tyser /* Skip all alphanumeric pointer suffixes */
63678acc472SPeter Tyser while (isalnum(fmt[1]))
63778acc472SPeter Tyser fmt++;
63878acc472SPeter Tyser continue;
63978acc472SPeter Tyser
64078acc472SPeter Tyser case 'n':
64178acc472SPeter Tyser if (qualifier == 'l') {
64278acc472SPeter Tyser long *ip = va_arg(args, long *);
64378acc472SPeter Tyser *ip = (str - buf);
64478acc472SPeter Tyser } else {
64578acc472SPeter Tyser int *ip = va_arg(args, int *);
64678acc472SPeter Tyser *ip = (str - buf);
64778acc472SPeter Tyser }
64878acc472SPeter Tyser continue;
64978acc472SPeter Tyser
65078acc472SPeter Tyser case '%':
651046a37bdSSonny Rao ADDCH(str, '%');
65278acc472SPeter Tyser continue;
65378acc472SPeter Tyser
65478acc472SPeter Tyser /* integer number formats - set up the flags and "break" */
65578acc472SPeter Tyser case 'o':
65678acc472SPeter Tyser base = 8;
65778acc472SPeter Tyser break;
65878acc472SPeter Tyser
65978acc472SPeter Tyser case 'x':
66078acc472SPeter Tyser flags |= SMALL;
66178acc472SPeter Tyser case 'X':
66278acc472SPeter Tyser base = 16;
66378acc472SPeter Tyser break;
66478acc472SPeter Tyser
66578acc472SPeter Tyser case 'd':
66678acc472SPeter Tyser case 'i':
66778acc472SPeter Tyser flags |= SIGN;
66878acc472SPeter Tyser case 'u':
66978acc472SPeter Tyser break;
67078acc472SPeter Tyser
67178acc472SPeter Tyser default:
672046a37bdSSonny Rao ADDCH(str, '%');
67378acc472SPeter Tyser if (*fmt)
674046a37bdSSonny Rao ADDCH(str, *fmt);
67578acc472SPeter Tyser else
67678acc472SPeter Tyser --fmt;
67778acc472SPeter Tyser continue;
67878acc472SPeter Tyser }
67978acc472SPeter Tyser if (qualifier == 'L') /* "quad" for 64 bit variables */
68078acc472SPeter Tyser num = va_arg(args, unsigned long long);
68178acc472SPeter Tyser else if (qualifier == 'l') {
68278acc472SPeter Tyser num = va_arg(args, unsigned long);
68378acc472SPeter Tyser if (flags & SIGN)
68478acc472SPeter Tyser num = (signed long) num;
68578acc472SPeter Tyser } else if (qualifier == 'Z' || qualifier == 'z') {
68678acc472SPeter Tyser num = va_arg(args, size_t);
68778acc472SPeter Tyser } else if (qualifier == 't') {
68878acc472SPeter Tyser num = va_arg(args, ptrdiff_t);
68978acc472SPeter Tyser } else if (qualifier == 'h') {
69078acc472SPeter Tyser num = (unsigned short) va_arg(args, int);
69178acc472SPeter Tyser if (flags & SIGN)
69278acc472SPeter Tyser num = (signed short) num;
69378acc472SPeter Tyser } else {
69478acc472SPeter Tyser num = va_arg(args, unsigned int);
69578acc472SPeter Tyser if (flags & SIGN)
69678acc472SPeter Tyser num = (signed int) num;
69778acc472SPeter Tyser }
698046a37bdSSonny Rao str = number(str, end, num, base, field_width, precision,
699046a37bdSSonny Rao flags);
70078acc472SPeter Tyser }
701046a37bdSSonny Rao
702046a37bdSSonny Rao if (size > 0) {
703046a37bdSSonny Rao ADDCH(str, '\0');
704046a37bdSSonny Rao if (str > end)
705046a37bdSSonny Rao end[-1] = '\0';
706686f60f5SDarwin Rambo --str;
707046a37bdSSonny Rao }
708046a37bdSSonny Rao /* the trailing null byte doesn't count towards the total */
70978acc472SPeter Tyser return str - buf;
71078acc472SPeter Tyser }
71178acc472SPeter Tyser
vsnprintf(char * buf,size_t size,const char * fmt,va_list args)712046a37bdSSonny Rao int vsnprintf(char *buf, size_t size, const char *fmt,
713046a37bdSSonny Rao va_list args)
714046a37bdSSonny Rao {
715046a37bdSSonny Rao return vsnprintf_internal(buf, size, fmt, args);
716046a37bdSSonny Rao }
717046a37bdSSonny Rao
vscnprintf(char * buf,size_t size,const char * fmt,va_list args)718046a37bdSSonny Rao int vscnprintf(char *buf, size_t size, const char *fmt, va_list args)
719046a37bdSSonny Rao {
720046a37bdSSonny Rao int i;
721046a37bdSSonny Rao
722046a37bdSSonny Rao i = vsnprintf(buf, size, fmt, args);
723046a37bdSSonny Rao
724046a37bdSSonny Rao if (likely(i < size))
725046a37bdSSonny Rao return i;
726046a37bdSSonny Rao if (size != 0)
727046a37bdSSonny Rao return size - 1;
728046a37bdSSonny Rao return 0;
729046a37bdSSonny Rao }
730046a37bdSSonny Rao
snprintf(char * buf,size_t size,const char * fmt,...)731046a37bdSSonny Rao int snprintf(char *buf, size_t size, const char *fmt, ...)
732046a37bdSSonny Rao {
733046a37bdSSonny Rao va_list args;
734046a37bdSSonny Rao int i;
735046a37bdSSonny Rao
736046a37bdSSonny Rao va_start(args, fmt);
737046a37bdSSonny Rao i = vsnprintf(buf, size, fmt, args);
738046a37bdSSonny Rao va_end(args);
739046a37bdSSonny Rao
740046a37bdSSonny Rao return i;
741046a37bdSSonny Rao }
742046a37bdSSonny Rao
scnprintf(char * buf,size_t size,const char * fmt,...)743046a37bdSSonny Rao int scnprintf(char *buf, size_t size, const char *fmt, ...)
744046a37bdSSonny Rao {
745046a37bdSSonny Rao va_list args;
746046a37bdSSonny Rao int i;
747046a37bdSSonny Rao
748046a37bdSSonny Rao va_start(args, fmt);
749046a37bdSSonny Rao i = vscnprintf(buf, size, fmt, args);
750046a37bdSSonny Rao va_end(args);
751046a37bdSSonny Rao
752046a37bdSSonny Rao return i;
753046a37bdSSonny Rao }
754046a37bdSSonny Rao
755046a37bdSSonny Rao /**
756046a37bdSSonny Rao * Format a string and place it in a buffer (va_list version)
757046a37bdSSonny Rao *
758046a37bdSSonny Rao * @param buf The buffer to place the result into
759046a37bdSSonny Rao * @param fmt The format string to use
760046a37bdSSonny Rao * @param args Arguments for the format string
761046a37bdSSonny Rao *
762046a37bdSSonny Rao * The function returns the number of characters written
763046a37bdSSonny Rao * into @buf. Use vsnprintf() or vscnprintf() in order to avoid
764046a37bdSSonny Rao * buffer overflows.
765046a37bdSSonny Rao *
766046a37bdSSonny Rao * If you're not already dealing with a va_list consider using sprintf().
767046a37bdSSonny Rao */
vsprintf(char * buf,const char * fmt,va_list args)768046a37bdSSonny Rao int vsprintf(char *buf, const char *fmt, va_list args)
769046a37bdSSonny Rao {
770046a37bdSSonny Rao return vsnprintf_internal(buf, INT_MAX, fmt, args);
771046a37bdSSonny Rao }
772046a37bdSSonny Rao
sprintf(char * buf,const char * fmt,...)77378acc472SPeter Tyser int sprintf(char *buf, const char *fmt, ...)
77478acc472SPeter Tyser {
77578acc472SPeter Tyser va_list args;
77678acc472SPeter Tyser int i;
77778acc472SPeter Tyser
77878acc472SPeter Tyser va_start(args, fmt);
77978acc472SPeter Tyser i = vsprintf(buf, fmt, args);
78078acc472SPeter Tyser va_end(args);
78178acc472SPeter Tyser return i;
78278acc472SPeter Tyser }
78378acc472SPeter Tyser
7844f1eed75SAlex Kiernan #if CONFIG_IS_ENABLED(PRINTF)
printf(const char * fmt,...)7857d9cde10SStefan Roese int printf(const char *fmt, ...)
7867d9cde10SStefan Roese {
7877d9cde10SStefan Roese va_list args;
7887d9cde10SStefan Roese uint i;
7897d9cde10SStefan Roese char printbuffer[CONFIG_SYS_PBSIZE];
7907d9cde10SStefan Roese
7917d9cde10SStefan Roese va_start(args, fmt);
7927d9cde10SStefan Roese
7937d9cde10SStefan Roese /*
7947d9cde10SStefan Roese * For this to work, printbuffer must be larger than
7957d9cde10SStefan Roese * anything we ever want to print.
7967d9cde10SStefan Roese */
7977d9cde10SStefan Roese i = vscnprintf(printbuffer, sizeof(printbuffer), fmt, args);
7987d9cde10SStefan Roese va_end(args);
7997d9cde10SStefan Roese
800256060e4SHeinrich Schuchardt /* Handle error */
801256060e4SHeinrich Schuchardt if (i <= 0)
802256060e4SHeinrich Schuchardt return i;
8037d9cde10SStefan Roese /* Print the string */
8047d9cde10SStefan Roese puts(printbuffer);
8057d9cde10SStefan Roese return i;
8067d9cde10SStefan Roese }
8077d9cde10SStefan Roese
vprintf(const char * fmt,va_list args)8087d9cde10SStefan Roese int vprintf(const char *fmt, va_list args)
8097d9cde10SStefan Roese {
8107d9cde10SStefan Roese uint i;
8117d9cde10SStefan Roese char printbuffer[CONFIG_SYS_PBSIZE];
8127d9cde10SStefan Roese
8137d9cde10SStefan Roese /*
8147d9cde10SStefan Roese * For this to work, printbuffer must be larger than
8157d9cde10SStefan Roese * anything we ever want to print.
8167d9cde10SStefan Roese */
8177d9cde10SStefan Roese i = vscnprintf(printbuffer, sizeof(printbuffer), fmt, args);
8187d9cde10SStefan Roese
819256060e4SHeinrich Schuchardt /* Handle error */
820256060e4SHeinrich Schuchardt if (i <= 0)
821256060e4SHeinrich Schuchardt return i;
8227d9cde10SStefan Roese /* Print the string */
8237d9cde10SStefan Roese puts(printbuffer);
8247d9cde10SStefan Roese return i;
8257d9cde10SStefan Roese }
8264f1eed75SAlex Kiernan #endif
82766312374SSimon Glass
simple_itoa(ulong i)8283cce8a54SSimon Glass char *simple_itoa(ulong i)
8293cce8a54SSimon Glass {
8303cce8a54SSimon Glass /* 21 digits plus null terminator, good for 64-bit or smaller ints */
8313cce8a54SSimon Glass static char local[22];
8323cce8a54SSimon Glass char *p = &local[21];
8333cce8a54SSimon Glass
8343cce8a54SSimon Glass *p-- = '\0';
8353cce8a54SSimon Glass do {
8363cce8a54SSimon Glass *p-- = '0' + i % 10;
8373cce8a54SSimon Glass i /= 10;
8383cce8a54SSimon Glass } while (i > 0);
8393cce8a54SSimon Glass return p + 1;
8403cce8a54SSimon Glass }
841b8bcaa3aSSimon Glass
842b8bcaa3aSSimon Glass /* We don't seem to have %'d in U-Boot */
print_grouped_ull(unsigned long long int_val,int digits)843b8bcaa3aSSimon Glass void print_grouped_ull(unsigned long long int_val, int digits)
844b8bcaa3aSSimon Glass {
845b8bcaa3aSSimon Glass char str[21], *s;
846b8bcaa3aSSimon Glass int grab = 3;
847b8bcaa3aSSimon Glass
848b8bcaa3aSSimon Glass digits = (digits + 2) / 3;
849b8bcaa3aSSimon Glass sprintf(str, "%*llu", digits * 3, int_val);
850b8bcaa3aSSimon Glass for (s = str; *s; s += grab) {
851b8bcaa3aSSimon Glass if (s != str)
852b8bcaa3aSSimon Glass putc(s[-1] != ' ' ? ',' : ' ');
853b8bcaa3aSSimon Glass printf("%.*s", grab, s);
854b8bcaa3aSSimon Glass grab = 3;
855b8bcaa3aSSimon Glass }
856b8bcaa3aSSimon Glass }
85709c32807SHeiko Schocher
str2off(const char * p,loff_t * num)85809c32807SHeiko Schocher bool str2off(const char *p, loff_t *num)
85909c32807SHeiko Schocher {
86009c32807SHeiko Schocher char *endptr;
86109c32807SHeiko Schocher
86209c32807SHeiko Schocher *num = simple_strtoull(p, &endptr, 16);
86309c32807SHeiko Schocher return *p != '\0' && *endptr == '\0';
86409c32807SHeiko Schocher }
86509c32807SHeiko Schocher
str2long(const char * p,ulong * num)86609c32807SHeiko Schocher bool str2long(const char *p, ulong *num)
86709c32807SHeiko Schocher {
86809c32807SHeiko Schocher char *endptr;
86909c32807SHeiko Schocher
87009c32807SHeiko Schocher *num = simple_strtoul(p, &endptr, 16);
87109c32807SHeiko Schocher return *p != '\0' && *endptr == '\0';
87209c32807SHeiko Schocher }
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