wdenk | 153d511 | 2002-08-30 11:07:04 +0000 | [diff] [blame] | 1 | /* |
| 2 | * linux/lib/vsprintf.c |
| 3 | * |
| 4 | * Copyright (C) 1991, 1992 Linus Torvalds |
Simon Glass | 2189d5f | 2019-11-14 12:57:20 -0700 | [diff] [blame] | 5 | * (C) Copyright 2000-2009 |
| 6 | * Wolfgang Denk, DENX Software Engineering, wd@denx.de. |
wdenk | 153d511 | 2002-08-30 11:07:04 +0000 | [diff] [blame] | 7 | */ |
| 8 | |
| 9 | /* vsprintf.c -- Lars Wirzenius & Linus Torvalds. */ |
| 10 | /* |
| 11 | * Wirzenius wrote this portably, Torvalds fucked it up :-) |
Simon Glass | 3cce8a5 | 2011-10-21 18:51:33 +0000 | [diff] [blame] | 12 | * |
| 13 | * from hush: simple_itoa() was lifted from boa-0.93.15 |
wdenk | 153d511 | 2002-08-30 11:07:04 +0000 | [diff] [blame] | 14 | */ |
| 15 | |
wdenk | 153d511 | 2002-08-30 11:07:04 +0000 | [diff] [blame] | 16 | #include <common.h> |
Rob Clark | 274325c | 2017-09-09 06:47:41 -0400 | [diff] [blame] | 17 | #include <charset.h> |
Heinrich Schuchardt | 256060e | 2018-01-10 18:06:08 +0100 | [diff] [blame] | 18 | #include <efi_loader.h> |
Dirk Behme | 4791050 | 2009-07-22 17:51:56 +0200 | [diff] [blame] | 19 | #include <div64.h> |
Alexey Brodkin | f8c987f | 2018-06-05 17:17:57 +0300 | [diff] [blame] | 20 | #include <hexdump.h> |
Heinrich Schuchardt | 256060e | 2018-01-10 18:06:08 +0100 | [diff] [blame] | 21 | #include <stdarg.h> |
Simon Glass | 2189d5f | 2019-11-14 12:57:20 -0700 | [diff] [blame] | 22 | #include <vsprintf.h> |
Heinrich Schuchardt | 256060e | 2018-01-10 18:06:08 +0100 | [diff] [blame] | 23 | #include <linux/ctype.h> |
| 24 | #include <linux/err.h> |
| 25 | #include <linux/types.h> |
| 26 | #include <linux/string.h> |
| 27 | |
Dirk Behme | 4791050 | 2009-07-22 17:51:56 +0200 | [diff] [blame] | 28 | #define noinline __attribute__((noinline)) |
| 29 | |
wdenk | 153d511 | 2002-08-30 11:07:04 +0000 | [diff] [blame] | 30 | /* we use this so that we can do without the ctype library */ |
| 31 | #define is_digit(c) ((c) >= '0' && (c) <= '9') |
| 32 | |
| 33 | static int skip_atoi(const char **s) |
| 34 | { |
Daniel Schwierzeck | 8acdae6 | 2012-09-16 06:55:03 +0000 | [diff] [blame] | 35 | int i = 0; |
wdenk | 153d511 | 2002-08-30 11:07:04 +0000 | [diff] [blame] | 36 | |
| 37 | while (is_digit(**s)) |
Daniel Schwierzeck | 8acdae6 | 2012-09-16 06:55:03 +0000 | [diff] [blame] | 38 | i = i * 10 + *((*s)++) - '0'; |
| 39 | |
wdenk | 153d511 | 2002-08-30 11:07:04 +0000 | [diff] [blame] | 40 | return i; |
| 41 | } |
| 42 | |
Mike Frysinger | 6c6166f | 2009-02-16 23:21:36 -0500 | [diff] [blame] | 43 | /* Decimal conversion is by far the most typical, and is used |
| 44 | * for /proc and /sys data. This directly impacts e.g. top performance |
| 45 | * with many processes running. We optimize it for speed |
| 46 | * using code from |
| 47 | * http://www.cs.uiowa.edu/~jones/bcd/decimal.html |
| 48 | * (with permission from the author, Douglas W. Jones). */ |
| 49 | |
| 50 | /* Formats correctly any integer in [0,99999]. |
| 51 | * Outputs from one to five digits depending on input. |
| 52 | * On i386 gcc 4.1.2 -O2: ~250 bytes of code. */ |
Daniel Schwierzeck | 8acdae6 | 2012-09-16 06:55:03 +0000 | [diff] [blame] | 53 | static char *put_dec_trunc(char *buf, unsigned q) |
Mike Frysinger | 6c6166f | 2009-02-16 23:21:36 -0500 | [diff] [blame] | 54 | { |
| 55 | unsigned d3, d2, d1, d0; |
| 56 | d1 = (q>>4) & 0xf; |
| 57 | d2 = (q>>8) & 0xf; |
| 58 | d3 = (q>>12); |
| 59 | |
| 60 | d0 = 6*(d3 + d2 + d1) + (q & 0xf); |
| 61 | q = (d0 * 0xcd) >> 11; |
| 62 | d0 = d0 - 10*q; |
| 63 | *buf++ = d0 + '0'; /* least significant digit */ |
| 64 | d1 = q + 9*d3 + 5*d2 + d1; |
| 65 | if (d1 != 0) { |
| 66 | q = (d1 * 0xcd) >> 11; |
| 67 | d1 = d1 - 10*q; |
| 68 | *buf++ = d1 + '0'; /* next digit */ |
| 69 | |
| 70 | d2 = q + 2*d2; |
| 71 | if ((d2 != 0) || (d3 != 0)) { |
| 72 | q = (d2 * 0xd) >> 7; |
| 73 | d2 = d2 - 10*q; |
| 74 | *buf++ = d2 + '0'; /* next digit */ |
| 75 | |
| 76 | d3 = q + 4*d3; |
| 77 | if (d3 != 0) { |
| 78 | q = (d3 * 0xcd) >> 11; |
| 79 | d3 = d3 - 10*q; |
| 80 | *buf++ = d3 + '0'; /* next digit */ |
| 81 | if (q != 0) |
Daniel Schwierzeck | 8acdae6 | 2012-09-16 06:55:03 +0000 | [diff] [blame] | 82 | *buf++ = q + '0'; /* most sign. digit */ |
Mike Frysinger | 6c6166f | 2009-02-16 23:21:36 -0500 | [diff] [blame] | 83 | } |
| 84 | } |
| 85 | } |
| 86 | return buf; |
| 87 | } |
| 88 | /* Same with if's removed. Always emits five digits */ |
Daniel Schwierzeck | 8acdae6 | 2012-09-16 06:55:03 +0000 | [diff] [blame] | 89 | static char *put_dec_full(char *buf, unsigned q) |
Mike Frysinger | 6c6166f | 2009-02-16 23:21:36 -0500 | [diff] [blame] | 90 | { |
| 91 | /* BTW, if q is in [0,9999], 8-bit ints will be enough, */ |
| 92 | /* but anyway, gcc produces better code with full-sized ints */ |
| 93 | unsigned d3, d2, d1, d0; |
| 94 | d1 = (q>>4) & 0xf; |
| 95 | d2 = (q>>8) & 0xf; |
| 96 | d3 = (q>>12); |
| 97 | |
Wolfgang Denk | c0a14ae | 2009-04-05 00:27:57 +0200 | [diff] [blame] | 98 | /* |
| 99 | * Possible ways to approx. divide by 10 |
| 100 | * gcc -O2 replaces multiply with shifts and adds |
| 101 | * (x * 0xcd) >> 11: 11001101 - shorter code than * 0x67 (on i386) |
| 102 | * (x * 0x67) >> 10: 1100111 |
| 103 | * (x * 0x34) >> 9: 110100 - same |
| 104 | * (x * 0x1a) >> 8: 11010 - same |
| 105 | * (x * 0x0d) >> 7: 1101 - same, shortest code (on i386) |
| 106 | */ |
Mike Frysinger | 6c6166f | 2009-02-16 23:21:36 -0500 | [diff] [blame] | 107 | |
| 108 | d0 = 6*(d3 + d2 + d1) + (q & 0xf); |
| 109 | q = (d0 * 0xcd) >> 11; |
| 110 | d0 = d0 - 10*q; |
| 111 | *buf++ = d0 + '0'; |
| 112 | d1 = q + 9*d3 + 5*d2 + d1; |
| 113 | q = (d1 * 0xcd) >> 11; |
| 114 | d1 = d1 - 10*q; |
| 115 | *buf++ = d1 + '0'; |
| 116 | |
| 117 | d2 = q + 2*d2; |
| 118 | q = (d2 * 0xd) >> 7; |
| 119 | d2 = d2 - 10*q; |
| 120 | *buf++ = d2 + '0'; |
| 121 | |
| 122 | d3 = q + 4*d3; |
| 123 | q = (d3 * 0xcd) >> 11; /* - shorter code */ |
| 124 | /* q = (d3 * 0x67) >> 10; - would also work */ |
| 125 | d3 = d3 - 10*q; |
| 126 | *buf++ = d3 + '0'; |
| 127 | *buf++ = q + '0'; |
| 128 | return buf; |
| 129 | } |
| 130 | /* No inlining helps gcc to use registers better */ |
Simon Glass | 6bf6725 | 2014-10-15 04:38:34 -0600 | [diff] [blame] | 131 | static noinline char *put_dec(char *buf, uint64_t num) |
Mike Frysinger | 6c6166f | 2009-02-16 23:21:36 -0500 | [diff] [blame] | 132 | { |
| 133 | while (1) { |
| 134 | unsigned rem; |
| 135 | if (num < 100000) |
| 136 | return put_dec_trunc(buf, num); |
| 137 | rem = do_div(num, 100000); |
| 138 | buf = put_dec_full(buf, rem); |
| 139 | } |
| 140 | } |
| 141 | |
wdenk | 153d511 | 2002-08-30 11:07:04 +0000 | [diff] [blame] | 142 | #define ZEROPAD 1 /* pad with zero */ |
| 143 | #define SIGN 2 /* unsigned/signed long */ |
| 144 | #define PLUS 4 /* show plus */ |
| 145 | #define SPACE 8 /* space if plus */ |
| 146 | #define LEFT 16 /* left justified */ |
Mike Frysinger | 6c6166f | 2009-02-16 23:21:36 -0500 | [diff] [blame] | 147 | #define SMALL 32 /* Must be 32 == 0x20 */ |
| 148 | #define SPECIAL 64 /* 0x */ |
wdenk | 153d511 | 2002-08-30 11:07:04 +0000 | [diff] [blame] | 149 | |
Sonny Rao | 046a37b | 2011-11-02 09:52:08 +0000 | [diff] [blame] | 150 | /* |
| 151 | * Macro to add a new character to our output string, but only if it will |
| 152 | * fit. The macro moves to the next character position in the output string. |
| 153 | */ |
| 154 | #define ADDCH(str, ch) do { \ |
| 155 | if ((str) < end) \ |
| 156 | *(str) = (ch); \ |
| 157 | ++str; \ |
| 158 | } while (0) |
Sonny Rao | 046a37b | 2011-11-02 09:52:08 +0000 | [diff] [blame] | 159 | |
Daniel Schwierzeck | 7b64f66 | 2012-09-16 06:55:04 +0000 | [diff] [blame] | 160 | static char *number(char *buf, char *end, u64 num, |
Sonny Rao | 046a37b | 2011-11-02 09:52:08 +0000 | [diff] [blame] | 161 | int base, int size, int precision, int type) |
wdenk | 153d511 | 2002-08-30 11:07:04 +0000 | [diff] [blame] | 162 | { |
Mike Frysinger | 6c6166f | 2009-02-16 23:21:36 -0500 | [diff] [blame] | 163 | /* we are called with base 8, 10 or 16, only, thus don't need "G..." */ |
Daniel Schwierzeck | 8acdae6 | 2012-09-16 06:55:03 +0000 | [diff] [blame] | 164 | static const char digits[16] = "0123456789ABCDEF"; |
Mike Frysinger | 6c6166f | 2009-02-16 23:21:36 -0500 | [diff] [blame] | 165 | |
| 166 | char tmp[66]; |
| 167 | char sign; |
| 168 | char locase; |
| 169 | int need_pfx = ((type & SPECIAL) && base != 10); |
wdenk | 153d511 | 2002-08-30 11:07:04 +0000 | [diff] [blame] | 170 | int i; |
| 171 | |
Mike Frysinger | 6c6166f | 2009-02-16 23:21:36 -0500 | [diff] [blame] | 172 | /* locase = 0 or 0x20. ORing digits or letters with 'locase' |
| 173 | * produces same digits or (maybe lowercased) letters */ |
| 174 | locase = (type & SMALL); |
wdenk | 153d511 | 2002-08-30 11:07:04 +0000 | [diff] [blame] | 175 | if (type & LEFT) |
| 176 | type &= ~ZEROPAD; |
wdenk | 153d511 | 2002-08-30 11:07:04 +0000 | [diff] [blame] | 177 | sign = 0; |
| 178 | if (type & SIGN) { |
Daniel Schwierzeck | 7b64f66 | 2012-09-16 06:55:04 +0000 | [diff] [blame] | 179 | if ((s64) num < 0) { |
wdenk | 153d511 | 2002-08-30 11:07:04 +0000 | [diff] [blame] | 180 | sign = '-'; |
Daniel Schwierzeck | 7b64f66 | 2012-09-16 06:55:04 +0000 | [diff] [blame] | 181 | num = -(s64) num; |
wdenk | 153d511 | 2002-08-30 11:07:04 +0000 | [diff] [blame] | 182 | size--; |
| 183 | } else if (type & PLUS) { |
| 184 | sign = '+'; |
| 185 | size--; |
| 186 | } else if (type & SPACE) { |
| 187 | sign = ' '; |
| 188 | size--; |
| 189 | } |
| 190 | } |
Mike Frysinger | 6c6166f | 2009-02-16 23:21:36 -0500 | [diff] [blame] | 191 | if (need_pfx) { |
| 192 | size--; |
wdenk | 153d511 | 2002-08-30 11:07:04 +0000 | [diff] [blame] | 193 | if (base == 16) |
wdenk | 153d511 | 2002-08-30 11:07:04 +0000 | [diff] [blame] | 194 | size--; |
| 195 | } |
Mike Frysinger | 6c6166f | 2009-02-16 23:21:36 -0500 | [diff] [blame] | 196 | |
| 197 | /* generate full string in tmp[], in reverse order */ |
wdenk | 153d511 | 2002-08-30 11:07:04 +0000 | [diff] [blame] | 198 | i = 0; |
| 199 | if (num == 0) |
Mike Frysinger | 6c6166f | 2009-02-16 23:21:36 -0500 | [diff] [blame] | 200 | tmp[i++] = '0'; |
| 201 | /* Generic code, for any base: |
| 202 | else do { |
| 203 | tmp[i++] = (digits[do_div(num,base)] | locase); |
| 204 | } while (num != 0); |
| 205 | */ |
| 206 | else if (base != 10) { /* 8 or 16 */ |
| 207 | int mask = base - 1; |
| 208 | int shift = 3; |
Daniel Schwierzeck | 8acdae6 | 2012-09-16 06:55:03 +0000 | [diff] [blame] | 209 | |
| 210 | if (base == 16) |
| 211 | shift = 4; |
| 212 | |
Mike Frysinger | 6c6166f | 2009-02-16 23:21:36 -0500 | [diff] [blame] | 213 | do { |
Daniel Schwierzeck | 8acdae6 | 2012-09-16 06:55:03 +0000 | [diff] [blame] | 214 | tmp[i++] = (digits[((unsigned char)num) & mask] |
| 215 | | locase); |
Mike Frysinger | 6c6166f | 2009-02-16 23:21:36 -0500 | [diff] [blame] | 216 | num >>= shift; |
| 217 | } while (num); |
| 218 | } else { /* base 10 */ |
| 219 | i = put_dec(tmp, num) - tmp; |
| 220 | } |
| 221 | |
| 222 | /* printing 100 using %2d gives "100", not "00" */ |
wdenk | 153d511 | 2002-08-30 11:07:04 +0000 | [diff] [blame] | 223 | if (i > precision) |
| 224 | precision = i; |
Mike Frysinger | 6c6166f | 2009-02-16 23:21:36 -0500 | [diff] [blame] | 225 | /* leading space padding */ |
wdenk | 153d511 | 2002-08-30 11:07:04 +0000 | [diff] [blame] | 226 | size -= precision; |
Sonny Rao | 046a37b | 2011-11-02 09:52:08 +0000 | [diff] [blame] | 227 | if (!(type & (ZEROPAD + LEFT))) { |
| 228 | while (--size >= 0) |
| 229 | ADDCH(buf, ' '); |
| 230 | } |
Mike Frysinger | 6c6166f | 2009-02-16 23:21:36 -0500 | [diff] [blame] | 231 | /* sign */ |
wdenk | 153d511 | 2002-08-30 11:07:04 +0000 | [diff] [blame] | 232 | if (sign) |
Sonny Rao | 046a37b | 2011-11-02 09:52:08 +0000 | [diff] [blame] | 233 | ADDCH(buf, sign); |
Mike Frysinger | 6c6166f | 2009-02-16 23:21:36 -0500 | [diff] [blame] | 234 | /* "0x" / "0" prefix */ |
| 235 | if (need_pfx) { |
Sonny Rao | 046a37b | 2011-11-02 09:52:08 +0000 | [diff] [blame] | 236 | ADDCH(buf, '0'); |
Mike Frysinger | 6c6166f | 2009-02-16 23:21:36 -0500 | [diff] [blame] | 237 | if (base == 16) |
Sonny Rao | 046a37b | 2011-11-02 09:52:08 +0000 | [diff] [blame] | 238 | ADDCH(buf, 'X' | locase); |
wdenk | 153d511 | 2002-08-30 11:07:04 +0000 | [diff] [blame] | 239 | } |
Mike Frysinger | 6c6166f | 2009-02-16 23:21:36 -0500 | [diff] [blame] | 240 | /* zero or space padding */ |
| 241 | if (!(type & LEFT)) { |
| 242 | char c = (type & ZEROPAD) ? '0' : ' '; |
Sonny Rao | 046a37b | 2011-11-02 09:52:08 +0000 | [diff] [blame] | 243 | |
Mike Frysinger | 6c6166f | 2009-02-16 23:21:36 -0500 | [diff] [blame] | 244 | while (--size >= 0) |
Sonny Rao | 046a37b | 2011-11-02 09:52:08 +0000 | [diff] [blame] | 245 | ADDCH(buf, c); |
Mike Frysinger | 6c6166f | 2009-02-16 23:21:36 -0500 | [diff] [blame] | 246 | } |
| 247 | /* hmm even more zero padding? */ |
| 248 | while (i <= --precision) |
Sonny Rao | 046a37b | 2011-11-02 09:52:08 +0000 | [diff] [blame] | 249 | ADDCH(buf, '0'); |
Mike Frysinger | 6c6166f | 2009-02-16 23:21:36 -0500 | [diff] [blame] | 250 | /* actual digits of result */ |
| 251 | while (--i >= 0) |
Sonny Rao | 046a37b | 2011-11-02 09:52:08 +0000 | [diff] [blame] | 252 | ADDCH(buf, tmp[i]); |
Mike Frysinger | 6c6166f | 2009-02-16 23:21:36 -0500 | [diff] [blame] | 253 | /* trailing space padding */ |
| 254 | while (--size >= 0) |
Sonny Rao | 046a37b | 2011-11-02 09:52:08 +0000 | [diff] [blame] | 255 | ADDCH(buf, ' '); |
Mike Frysinger | 6c6166f | 2009-02-16 23:21:36 -0500 | [diff] [blame] | 256 | return buf; |
wdenk | 153d511 | 2002-08-30 11:07:04 +0000 | [diff] [blame] | 257 | } |
| 258 | |
Sonny Rao | 046a37b | 2011-11-02 09:52:08 +0000 | [diff] [blame] | 259 | static char *string(char *buf, char *end, char *s, int field_width, |
| 260 | int precision, int flags) |
Mike Frysinger | 6c6166f | 2009-02-16 23:21:36 -0500 | [diff] [blame] | 261 | { |
| 262 | int len, i; |
wdenk | 153d511 | 2002-08-30 11:07:04 +0000 | [diff] [blame] | 263 | |
Kim Phillips | 0eb2576 | 2012-10-29 13:34:36 +0000 | [diff] [blame] | 264 | if (s == NULL) |
Mike Frysinger | 6c6166f | 2009-02-16 23:21:36 -0500 | [diff] [blame] | 265 | s = "<NULL>"; |
| 266 | |
| 267 | len = strnlen(s, precision); |
| 268 | |
| 269 | if (!(flags & LEFT)) |
| 270 | while (len < field_width--) |
Sonny Rao | 046a37b | 2011-11-02 09:52:08 +0000 | [diff] [blame] | 271 | ADDCH(buf, ' '); |
Mike Frysinger | 6c6166f | 2009-02-16 23:21:36 -0500 | [diff] [blame] | 272 | for (i = 0; i < len; ++i) |
Sonny Rao | 046a37b | 2011-11-02 09:52:08 +0000 | [diff] [blame] | 273 | ADDCH(buf, *s++); |
Mike Frysinger | 6c6166f | 2009-02-16 23:21:36 -0500 | [diff] [blame] | 274 | while (len < field_width--) |
Sonny Rao | 046a37b | 2011-11-02 09:52:08 +0000 | [diff] [blame] | 275 | ADDCH(buf, ' '); |
Mike Frysinger | 6c6166f | 2009-02-16 23:21:36 -0500 | [diff] [blame] | 276 | return buf; |
| 277 | } |
| 278 | |
Heinrich Schuchardt | fbb3ea8 | 2018-08-31 21:31:25 +0200 | [diff] [blame] | 279 | /* U-Boot uses UTF-16 strings in the EFI context only. */ |
| 280 | #if CONFIG_IS_ENABLED(EFI_LOADER) && !defined(API_BUILD) |
Rob Clark | 274325c | 2017-09-09 06:47:41 -0400 | [diff] [blame] | 281 | static char *string16(char *buf, char *end, u16 *s, int field_width, |
| 282 | int precision, int flags) |
| 283 | { |
Heinrich Schuchardt | 0e66c10 | 2019-02-10 11:11:26 +0100 | [diff] [blame] | 284 | const u16 *str = s ? s : L"<NULL>"; |
| 285 | ssize_t i, len = utf16_strnlen(str, precision); |
Rob Clark | 274325c | 2017-09-09 06:47:41 -0400 | [diff] [blame] | 286 | |
| 287 | if (!(flags & LEFT)) |
Heinrich Schuchardt | 31bd711 | 2018-08-31 21:31:29 +0200 | [diff] [blame] | 288 | for (; len < field_width; --field_width) |
Rob Clark | 274325c | 2017-09-09 06:47:41 -0400 | [diff] [blame] | 289 | ADDCH(buf, ' '); |
Heinrich Schuchardt | 0e66c10 | 2019-02-10 11:11:26 +0100 | [diff] [blame] | 290 | for (i = 0; i < len && buf + utf16_utf8_strnlen(str, 1) <= end; ++i) { |
| 291 | s32 s = utf16_get(&str); |
| 292 | |
Heinrich Schuchardt | 60c4454 | 2019-02-15 22:20:53 +0100 | [diff] [blame] | 293 | if (s < 0) |
| 294 | s = '?'; |
Heinrich Schuchardt | 0e66c10 | 2019-02-10 11:11:26 +0100 | [diff] [blame] | 295 | utf8_put(s, &buf); |
| 296 | } |
Heinrich Schuchardt | 31bd711 | 2018-08-31 21:31:29 +0200 | [diff] [blame] | 297 | for (; len < field_width; --field_width) |
Rob Clark | 274325c | 2017-09-09 06:47:41 -0400 | [diff] [blame] | 298 | ADDCH(buf, ' '); |
| 299 | return buf; |
| 300 | } |
| 301 | |
Heinrich Schuchardt | 64b5ba4 | 2019-05-11 09:53:33 +0200 | [diff] [blame] | 302 | #if CONFIG_IS_ENABLED(EFI_DEVICE_PATH_TO_TEXT) |
Heinrich Schuchardt | 256060e | 2018-01-10 18:06:08 +0100 | [diff] [blame] | 303 | static char *device_path_string(char *buf, char *end, void *dp, int field_width, |
| 304 | int precision, int flags) |
| 305 | { |
| 306 | u16 *str; |
| 307 | |
Heinrich Schuchardt | 5f1ce1d | 2018-01-26 06:30:30 +0100 | [diff] [blame] | 308 | /* If dp == NULL output the string '<NULL>' */ |
Heinrich Schuchardt | 256060e | 2018-01-10 18:06:08 +0100 | [diff] [blame] | 309 | if (!dp) |
Heinrich Schuchardt | 5f1ce1d | 2018-01-26 06:30:30 +0100 | [diff] [blame] | 310 | return string16(buf, end, dp, field_width, precision, flags); |
Heinrich Schuchardt | 256060e | 2018-01-10 18:06:08 +0100 | [diff] [blame] | 311 | |
| 312 | str = efi_dp_str((struct efi_device_path *)dp); |
| 313 | if (!str) |
| 314 | return ERR_PTR(-ENOMEM); |
| 315 | |
| 316 | buf = string16(buf, end, str, field_width, precision, flags); |
| 317 | efi_free_pool(str); |
| 318 | return buf; |
| 319 | } |
| 320 | #endif |
Heinrich Schuchardt | 64b5ba4 | 2019-05-11 09:53:33 +0200 | [diff] [blame] | 321 | #endif |
Heinrich Schuchardt | 256060e | 2018-01-10 18:06:08 +0100 | [diff] [blame] | 322 | |
Sonny Rao | 046a37b | 2011-11-02 09:52:08 +0000 | [diff] [blame] | 323 | static char *mac_address_string(char *buf, char *end, u8 *addr, int field_width, |
Mike Frysinger | 6c6166f | 2009-02-16 23:21:36 -0500 | [diff] [blame] | 324 | int precision, int flags) |
| 325 | { |
Daniel Schwierzeck | 8acdae6 | 2012-09-16 06:55:03 +0000 | [diff] [blame] | 326 | /* (6 * 2 hex digits), 5 colons and trailing zero */ |
| 327 | char mac_addr[6 * 3]; |
Mike Frysinger | 6c6166f | 2009-02-16 23:21:36 -0500 | [diff] [blame] | 328 | char *p = mac_addr; |
| 329 | int i; |
| 330 | |
| 331 | for (i = 0; i < 6; i++) { |
Alexey Brodkin | f8c987f | 2018-06-05 17:17:57 +0300 | [diff] [blame] | 332 | p = hex_byte_pack(p, addr[i]); |
Mike Frysinger | 6c6166f | 2009-02-16 23:21:36 -0500 | [diff] [blame] | 333 | if (!(flags & SPECIAL) && i != 5) |
| 334 | *p++ = ':'; |
| 335 | } |
| 336 | *p = '\0'; |
| 337 | |
Sonny Rao | 046a37b | 2011-11-02 09:52:08 +0000 | [diff] [blame] | 338 | return string(buf, end, mac_addr, field_width, precision, |
| 339 | flags & ~SPECIAL); |
Mike Frysinger | 6c6166f | 2009-02-16 23:21:36 -0500 | [diff] [blame] | 340 | } |
| 341 | |
Sonny Rao | 046a37b | 2011-11-02 09:52:08 +0000 | [diff] [blame] | 342 | static char *ip6_addr_string(char *buf, char *end, u8 *addr, int field_width, |
Mike Frysinger | 6c6166f | 2009-02-16 23:21:36 -0500 | [diff] [blame] | 343 | int precision, int flags) |
| 344 | { |
Daniel Schwierzeck | 8acdae6 | 2012-09-16 06:55:03 +0000 | [diff] [blame] | 345 | /* (8 * 4 hex digits), 7 colons and trailing zero */ |
| 346 | char ip6_addr[8 * 5]; |
Mike Frysinger | 6c6166f | 2009-02-16 23:21:36 -0500 | [diff] [blame] | 347 | char *p = ip6_addr; |
| 348 | int i; |
| 349 | |
| 350 | for (i = 0; i < 8; i++) { |
Alexey Brodkin | f8c987f | 2018-06-05 17:17:57 +0300 | [diff] [blame] | 351 | p = hex_byte_pack(p, addr[2 * i]); |
| 352 | p = hex_byte_pack(p, addr[2 * i + 1]); |
Mike Frysinger | 6c6166f | 2009-02-16 23:21:36 -0500 | [diff] [blame] | 353 | if (!(flags & SPECIAL) && i != 7) |
| 354 | *p++ = ':'; |
| 355 | } |
| 356 | *p = '\0'; |
| 357 | |
Sonny Rao | 046a37b | 2011-11-02 09:52:08 +0000 | [diff] [blame] | 358 | return string(buf, end, ip6_addr, field_width, precision, |
| 359 | flags & ~SPECIAL); |
Mike Frysinger | 6c6166f | 2009-02-16 23:21:36 -0500 | [diff] [blame] | 360 | } |
| 361 | |
Sonny Rao | 046a37b | 2011-11-02 09:52:08 +0000 | [diff] [blame] | 362 | static char *ip4_addr_string(char *buf, char *end, u8 *addr, int field_width, |
Mike Frysinger | 6c6166f | 2009-02-16 23:21:36 -0500 | [diff] [blame] | 363 | int precision, int flags) |
| 364 | { |
Daniel Schwierzeck | 8acdae6 | 2012-09-16 06:55:03 +0000 | [diff] [blame] | 365 | /* (4 * 3 decimal digits), 3 dots and trailing zero */ |
| 366 | char ip4_addr[4 * 4]; |
Mike Frysinger | 6c6166f | 2009-02-16 23:21:36 -0500 | [diff] [blame] | 367 | char temp[3]; /* hold each IP quad in reverse order */ |
| 368 | char *p = ip4_addr; |
| 369 | int i, digits; |
| 370 | |
| 371 | for (i = 0; i < 4; i++) { |
| 372 | digits = put_dec_trunc(temp, addr[i]) - temp; |
| 373 | /* reverse the digits in the quad */ |
| 374 | while (digits--) |
| 375 | *p++ = temp[digits]; |
| 376 | if (i != 3) |
| 377 | *p++ = '.'; |
| 378 | } |
| 379 | *p = '\0'; |
| 380 | |
Sonny Rao | 046a37b | 2011-11-02 09:52:08 +0000 | [diff] [blame] | 381 | return string(buf, end, ip4_addr, field_width, precision, |
| 382 | flags & ~SPECIAL); |
Mike Frysinger | 6c6166f | 2009-02-16 23:21:36 -0500 | [diff] [blame] | 383 | } |
Mike Frysinger | 6c6166f | 2009-02-16 23:21:36 -0500 | [diff] [blame] | 384 | |
Rob Clark | 22ada0c | 2017-09-09 06:47:42 -0400 | [diff] [blame] | 385 | #ifdef CONFIG_LIB_UUID |
| 386 | /* |
Heinrich Schuchardt | 3bad256 | 2019-04-29 08:08:43 +0200 | [diff] [blame] | 387 | * This works (roughly) the same way as Linux's. |
Rob Clark | 22ada0c | 2017-09-09 06:47:42 -0400 | [diff] [blame] | 388 | * |
| 389 | * %pUb: 01020304-0506-0708-090a-0b0c0d0e0f10 |
Heinrich Schuchardt | 3bad256 | 2019-04-29 08:08:43 +0200 | [diff] [blame] | 390 | * %pUB: 01020304-0506-0708-090A-0B0C0D0E0F10 |
Rob Clark | 22ada0c | 2017-09-09 06:47:42 -0400 | [diff] [blame] | 391 | * %pUl: 04030201-0605-0807-090a-0b0c0d0e0f10 |
Heinrich Schuchardt | 3bad256 | 2019-04-29 08:08:43 +0200 | [diff] [blame] | 392 | * %pUL: 04030201-0605-0807-090A-0B0C0D0E0F10 |
Rob Clark | 22ada0c | 2017-09-09 06:47:42 -0400 | [diff] [blame] | 393 | */ |
| 394 | static char *uuid_string(char *buf, char *end, u8 *addr, int field_width, |
| 395 | int precision, int flags, const char *fmt) |
| 396 | { |
| 397 | char uuid[UUID_STR_LEN + 1]; |
Heinrich Schuchardt | 3bad256 | 2019-04-29 08:08:43 +0200 | [diff] [blame] | 398 | int str_format; |
Rob Clark | 22ada0c | 2017-09-09 06:47:42 -0400 | [diff] [blame] | 399 | |
| 400 | switch (*(++fmt)) { |
| 401 | case 'L': |
Heinrich Schuchardt | 3bad256 | 2019-04-29 08:08:43 +0200 | [diff] [blame] | 402 | str_format = UUID_STR_FORMAT_GUID | UUID_STR_UPPER_CASE; |
| 403 | break; |
Rob Clark | 22ada0c | 2017-09-09 06:47:42 -0400 | [diff] [blame] | 404 | case 'l': |
| 405 | str_format = UUID_STR_FORMAT_GUID; |
| 406 | break; |
| 407 | case 'B': |
Heinrich Schuchardt | 3bad256 | 2019-04-29 08:08:43 +0200 | [diff] [blame] | 408 | str_format = UUID_STR_FORMAT_STD | UUID_STR_UPPER_CASE; |
Rob Clark | 22ada0c | 2017-09-09 06:47:42 -0400 | [diff] [blame] | 409 | break; |
| 410 | default: |
Heinrich Schuchardt | 3bad256 | 2019-04-29 08:08:43 +0200 | [diff] [blame] | 411 | str_format = UUID_STR_FORMAT_STD; |
Rob Clark | 22ada0c | 2017-09-09 06:47:42 -0400 | [diff] [blame] | 412 | break; |
| 413 | } |
| 414 | |
Simon Glass | d7ae160 | 2018-06-18 08:08:20 -0600 | [diff] [blame] | 415 | if (addr) |
| 416 | uuid_bin_to_str(addr, uuid, str_format); |
| 417 | else |
| 418 | strcpy(uuid, "<NULL>"); |
Rob Clark | 22ada0c | 2017-09-09 06:47:42 -0400 | [diff] [blame] | 419 | |
| 420 | return string(buf, end, uuid, field_width, precision, flags); |
| 421 | } |
| 422 | #endif |
| 423 | |
Mike Frysinger | 6c6166f | 2009-02-16 23:21:36 -0500 | [diff] [blame] | 424 | /* |
| 425 | * Show a '%p' thing. A kernel extension is that the '%p' is followed |
| 426 | * by an extra set of alphanumeric characters that are extended format |
| 427 | * specifiers. |
| 428 | * |
| 429 | * Right now we handle: |
| 430 | * |
| 431 | * - 'M' For a 6-byte MAC address, it prints the address in the |
| 432 | * usual colon-separated hex notation |
| 433 | * - 'I' [46] for IPv4/IPv6 addresses printed in the usual way (dot-separated |
| 434 | * decimal for v4 and colon separated network-order 16 bit hex for v6) |
| 435 | * - 'i' [46] for 'raw' IPv4/IPv6 addresses, IPv6 omits the colons, IPv4 is |
| 436 | * currently the same |
| 437 | * |
| 438 | * Note: The difference between 'S' and 'F' is that on ia64 and ppc64 |
| 439 | * function pointers are really function descriptors, which contain a |
| 440 | * pointer to the real address. |
| 441 | */ |
Sonny Rao | 046a37b | 2011-11-02 09:52:08 +0000 | [diff] [blame] | 442 | static char *pointer(const char *fmt, char *buf, char *end, void *ptr, |
| 443 | int field_width, int precision, int flags) |
Mike Frysinger | 6c6166f | 2009-02-16 23:21:36 -0500 | [diff] [blame] | 444 | { |
Thierry Reding | 1eebd14 | 2014-11-12 18:26:47 -0700 | [diff] [blame] | 445 | u64 num = (uintptr_t)ptr; |
| 446 | |
Wolfgang Denk | d266f66 | 2012-10-30 09:19:52 +0000 | [diff] [blame] | 447 | /* |
| 448 | * Being a boot loader, we explicitly allow pointers to |
| 449 | * (physical) address null. |
| 450 | */ |
| 451 | #if 0 |
Mike Frysinger | 6c6166f | 2009-02-16 23:21:36 -0500 | [diff] [blame] | 452 | if (!ptr) |
Sonny Rao | 046a37b | 2011-11-02 09:52:08 +0000 | [diff] [blame] | 453 | return string(buf, end, "(null)", field_width, precision, |
| 454 | flags); |
Wolfgang Denk | d266f66 | 2012-10-30 09:19:52 +0000 | [diff] [blame] | 455 | #endif |
Mike Frysinger | 6c6166f | 2009-02-16 23:21:36 -0500 | [diff] [blame] | 456 | |
Mike Frysinger | 6c6166f | 2009-02-16 23:21:36 -0500 | [diff] [blame] | 457 | switch (*fmt) { |
Heinrich Schuchardt | 4ddcc4e | 2018-08-31 21:31:23 +0200 | [diff] [blame] | 458 | /* Device paths only exist in the EFI context. */ |
Heinrich Schuchardt | 64b5ba4 | 2019-05-11 09:53:33 +0200 | [diff] [blame] | 459 | #if CONFIG_IS_ENABLED(EFI_DEVICE_PATH_TO_TEXT) && !defined(API_BUILD) |
Heinrich Schuchardt | 256060e | 2018-01-10 18:06:08 +0100 | [diff] [blame] | 460 | case 'D': |
| 461 | return device_path_string(buf, end, ptr, field_width, |
| 462 | precision, flags); |
| 463 | #endif |
Thierry Reding | 1eebd14 | 2014-11-12 18:26:47 -0700 | [diff] [blame] | 464 | case 'a': |
| 465 | flags |= SPECIAL | ZEROPAD; |
| 466 | |
| 467 | switch (fmt[1]) { |
| 468 | case 'p': |
| 469 | default: |
| 470 | field_width = sizeof(phys_addr_t) * 2 + 2; |
| 471 | num = *(phys_addr_t *)ptr; |
| 472 | break; |
| 473 | } |
| 474 | break; |
Mike Frysinger | 6c6166f | 2009-02-16 23:21:36 -0500 | [diff] [blame] | 475 | case 'm': |
| 476 | flags |= SPECIAL; |
| 477 | /* Fallthrough */ |
| 478 | case 'M': |
Sonny Rao | 046a37b | 2011-11-02 09:52:08 +0000 | [diff] [blame] | 479 | return mac_address_string(buf, end, ptr, field_width, |
| 480 | precision, flags); |
Mike Frysinger | 6c6166f | 2009-02-16 23:21:36 -0500 | [diff] [blame] | 481 | case 'i': |
| 482 | flags |= SPECIAL; |
| 483 | /* Fallthrough */ |
| 484 | case 'I': |
| 485 | if (fmt[1] == '6') |
Sonny Rao | 046a37b | 2011-11-02 09:52:08 +0000 | [diff] [blame] | 486 | return ip6_addr_string(buf, end, ptr, field_width, |
| 487 | precision, flags); |
Mike Frysinger | 6c6166f | 2009-02-16 23:21:36 -0500 | [diff] [blame] | 488 | if (fmt[1] == '4') |
Sonny Rao | 046a37b | 2011-11-02 09:52:08 +0000 | [diff] [blame] | 489 | return ip4_addr_string(buf, end, ptr, field_width, |
| 490 | precision, flags); |
Mike Frysinger | 6c6166f | 2009-02-16 23:21:36 -0500 | [diff] [blame] | 491 | flags &= ~SPECIAL; |
| 492 | break; |
Rob Clark | 22ada0c | 2017-09-09 06:47:42 -0400 | [diff] [blame] | 493 | #ifdef CONFIG_LIB_UUID |
| 494 | case 'U': |
| 495 | return uuid_string(buf, end, ptr, field_width, precision, |
| 496 | flags, fmt); |
| 497 | #endif |
| 498 | default: |
| 499 | break; |
| 500 | } |
Mike Frysinger | 6c6166f | 2009-02-16 23:21:36 -0500 | [diff] [blame] | 501 | flags |= SMALL; |
| 502 | if (field_width == -1) { |
| 503 | field_width = 2*sizeof(void *); |
| 504 | flags |= ZEROPAD; |
| 505 | } |
Thierry Reding | 1eebd14 | 2014-11-12 18:26:47 -0700 | [diff] [blame] | 506 | return number(buf, end, num, 16, field_width, precision, flags); |
Mike Frysinger | 6c6166f | 2009-02-16 23:21:36 -0500 | [diff] [blame] | 507 | } |
| 508 | |
Sonny Rao | 046a37b | 2011-11-02 09:52:08 +0000 | [diff] [blame] | 509 | static int vsnprintf_internal(char *buf, size_t size, const char *fmt, |
| 510 | va_list args) |
wdenk | 153d511 | 2002-08-30 11:07:04 +0000 | [diff] [blame] | 511 | { |
Daniel Schwierzeck | 7b64f66 | 2012-09-16 06:55:04 +0000 | [diff] [blame] | 512 | u64 num; |
Mike Frysinger | 6c6166f | 2009-02-16 23:21:36 -0500 | [diff] [blame] | 513 | int base; |
| 514 | char *str; |
wdenk | 153d511 | 2002-08-30 11:07:04 +0000 | [diff] [blame] | 515 | |
| 516 | int flags; /* flags to number() */ |
| 517 | |
| 518 | int field_width; /* width of output field */ |
| 519 | int precision; /* min. # of digits for integers; max |
| 520 | number of chars for from string */ |
Mike Frysinger | 6c6166f | 2009-02-16 23:21:36 -0500 | [diff] [blame] | 521 | int qualifier; /* 'h', 'l', or 'L' for integer fields */ |
| 522 | /* 'z' support added 23/7/1999 S.H. */ |
| 523 | /* 'z' changed to 'Z' --davidm 1/25/99 */ |
| 524 | /* 't' added for ptrdiff_t */ |
Sonny Rao | 046a37b | 2011-11-02 09:52:08 +0000 | [diff] [blame] | 525 | char *end = buf + size; |
wdenk | 153d511 | 2002-08-30 11:07:04 +0000 | [diff] [blame] | 526 | |
Sonny Rao | 046a37b | 2011-11-02 09:52:08 +0000 | [diff] [blame] | 527 | /* Make sure end is always >= buf - do we want this in U-Boot? */ |
| 528 | if (end < buf) { |
| 529 | end = ((void *)-1); |
| 530 | size = end - buf; |
| 531 | } |
Mike Frysinger | 6c6166f | 2009-02-16 23:21:36 -0500 | [diff] [blame] | 532 | str = buf; |
| 533 | |
| 534 | for (; *fmt ; ++fmt) { |
wdenk | 153d511 | 2002-08-30 11:07:04 +0000 | [diff] [blame] | 535 | if (*fmt != '%') { |
Sonny Rao | 046a37b | 2011-11-02 09:52:08 +0000 | [diff] [blame] | 536 | ADDCH(str, *fmt); |
wdenk | 153d511 | 2002-08-30 11:07:04 +0000 | [diff] [blame] | 537 | continue; |
| 538 | } |
| 539 | |
| 540 | /* process flags */ |
| 541 | flags = 0; |
Daniel Schwierzeck | 8acdae6 | 2012-09-16 06:55:03 +0000 | [diff] [blame] | 542 | repeat: |
wdenk | 153d511 | 2002-08-30 11:07:04 +0000 | [diff] [blame] | 543 | ++fmt; /* this also skips first '%' */ |
| 544 | switch (*fmt) { |
Daniel Schwierzeck | 8acdae6 | 2012-09-16 06:55:03 +0000 | [diff] [blame] | 545 | case '-': |
| 546 | flags |= LEFT; |
| 547 | goto repeat; |
| 548 | case '+': |
| 549 | flags |= PLUS; |
| 550 | goto repeat; |
| 551 | case ' ': |
| 552 | flags |= SPACE; |
| 553 | goto repeat; |
| 554 | case '#': |
| 555 | flags |= SPECIAL; |
| 556 | goto repeat; |
| 557 | case '0': |
| 558 | flags |= ZEROPAD; |
| 559 | goto repeat; |
Mike Frysinger | 6c6166f | 2009-02-16 23:21:36 -0500 | [diff] [blame] | 560 | } |
wdenk | 153d511 | 2002-08-30 11:07:04 +0000 | [diff] [blame] | 561 | |
| 562 | /* get field width */ |
| 563 | field_width = -1; |
| 564 | if (is_digit(*fmt)) |
| 565 | field_width = skip_atoi(&fmt); |
| 566 | else if (*fmt == '*') { |
| 567 | ++fmt; |
| 568 | /* it's the next argument */ |
| 569 | field_width = va_arg(args, int); |
| 570 | if (field_width < 0) { |
| 571 | field_width = -field_width; |
| 572 | flags |= LEFT; |
| 573 | } |
| 574 | } |
| 575 | |
| 576 | /* get the precision */ |
| 577 | precision = -1; |
| 578 | if (*fmt == '.') { |
| 579 | ++fmt; |
| 580 | if (is_digit(*fmt)) |
| 581 | precision = skip_atoi(&fmt); |
| 582 | else if (*fmt == '*') { |
| 583 | ++fmt; |
| 584 | /* it's the next argument */ |
| 585 | precision = va_arg(args, int); |
| 586 | } |
| 587 | if (precision < 0) |
| 588 | precision = 0; |
| 589 | } |
| 590 | |
| 591 | /* get the conversion qualifier */ |
| 592 | qualifier = -1; |
Jean-Christophe PLAGNIOL-VILLARD | f354b73 | 2008-07-14 14:11:45 +0200 | [diff] [blame] | 593 | if (*fmt == 'h' || *fmt == 'l' || *fmt == 'L' || |
Mike Frysinger | 6c6166f | 2009-02-16 23:21:36 -0500 | [diff] [blame] | 594 | *fmt == 'Z' || *fmt == 'z' || *fmt == 't') { |
wdenk | 153d511 | 2002-08-30 11:07:04 +0000 | [diff] [blame] | 595 | qualifier = *fmt; |
Mike Frysinger | 6c6166f | 2009-02-16 23:21:36 -0500 | [diff] [blame] | 596 | ++fmt; |
| 597 | if (qualifier == 'l' && *fmt == 'l') { |
| 598 | qualifier = 'L'; |
James Yang | bf05293 | 2008-01-10 16:02:07 -0600 | [diff] [blame] | 599 | ++fmt; |
| 600 | } |
wdenk | 153d511 | 2002-08-30 11:07:04 +0000 | [diff] [blame] | 601 | } |
| 602 | |
| 603 | /* default base */ |
| 604 | base = 10; |
| 605 | |
| 606 | switch (*fmt) { |
| 607 | case 'c': |
Sonny Rao | 046a37b | 2011-11-02 09:52:08 +0000 | [diff] [blame] | 608 | if (!(flags & LEFT)) { |
wdenk | 153d511 | 2002-08-30 11:07:04 +0000 | [diff] [blame] | 609 | while (--field_width > 0) |
Sonny Rao | 046a37b | 2011-11-02 09:52:08 +0000 | [diff] [blame] | 610 | ADDCH(str, ' '); |
| 611 | } |
| 612 | ADDCH(str, (unsigned char) va_arg(args, int)); |
wdenk | 153d511 | 2002-08-30 11:07:04 +0000 | [diff] [blame] | 613 | while (--field_width > 0) |
Sonny Rao | 046a37b | 2011-11-02 09:52:08 +0000 | [diff] [blame] | 614 | ADDCH(str, ' '); |
wdenk | 153d511 | 2002-08-30 11:07:04 +0000 | [diff] [blame] | 615 | continue; |
| 616 | |
| 617 | case 's': |
Heinrich Schuchardt | fbb3ea8 | 2018-08-31 21:31:25 +0200 | [diff] [blame] | 618 | /* U-Boot uses UTF-16 strings in the EFI context only. */ |
| 619 | #if CONFIG_IS_ENABLED(EFI_LOADER) && !defined(API_BUILD) |
| 620 | if (qualifier == 'l') { |
Rob Clark | 274325c | 2017-09-09 06:47:41 -0400 | [diff] [blame] | 621 | str = string16(str, end, va_arg(args, u16 *), |
| 622 | field_width, precision, flags); |
Heinrich Schuchardt | fbb3ea8 | 2018-08-31 21:31:25 +0200 | [diff] [blame] | 623 | } else |
| 624 | #endif |
| 625 | { |
Rob Clark | 274325c | 2017-09-09 06:47:41 -0400 | [diff] [blame] | 626 | str = string(str, end, va_arg(args, char *), |
| 627 | field_width, precision, flags); |
| 628 | } |
wdenk | 153d511 | 2002-08-30 11:07:04 +0000 | [diff] [blame] | 629 | continue; |
| 630 | |
| 631 | case 'p': |
Daniel Schwierzeck | 8acdae6 | 2012-09-16 06:55:03 +0000 | [diff] [blame] | 632 | str = pointer(fmt + 1, str, end, |
Mike Frysinger | 6c6166f | 2009-02-16 23:21:36 -0500 | [diff] [blame] | 633 | va_arg(args, void *), |
| 634 | field_width, precision, flags); |
Heinrich Schuchardt | 256060e | 2018-01-10 18:06:08 +0100 | [diff] [blame] | 635 | if (IS_ERR(str)) |
| 636 | return PTR_ERR(str); |
Mike Frysinger | 6c6166f | 2009-02-16 23:21:36 -0500 | [diff] [blame] | 637 | /* Skip all alphanumeric pointer suffixes */ |
| 638 | while (isalnum(fmt[1])) |
| 639 | fmt++; |
wdenk | 153d511 | 2002-08-30 11:07:04 +0000 | [diff] [blame] | 640 | continue; |
| 641 | |
wdenk | 153d511 | 2002-08-30 11:07:04 +0000 | [diff] [blame] | 642 | case 'n': |
| 643 | if (qualifier == 'l') { |
Daniel Schwierzeck | 8acdae6 | 2012-09-16 06:55:03 +0000 | [diff] [blame] | 644 | long *ip = va_arg(args, long *); |
wdenk | 153d511 | 2002-08-30 11:07:04 +0000 | [diff] [blame] | 645 | *ip = (str - buf); |
| 646 | } else { |
Daniel Schwierzeck | 8acdae6 | 2012-09-16 06:55:03 +0000 | [diff] [blame] | 647 | int *ip = va_arg(args, int *); |
wdenk | 153d511 | 2002-08-30 11:07:04 +0000 | [diff] [blame] | 648 | *ip = (str - buf); |
| 649 | } |
| 650 | continue; |
| 651 | |
| 652 | case '%': |
Sonny Rao | 046a37b | 2011-11-02 09:52:08 +0000 | [diff] [blame] | 653 | ADDCH(str, '%'); |
wdenk | 153d511 | 2002-08-30 11:07:04 +0000 | [diff] [blame] | 654 | continue; |
| 655 | |
| 656 | /* integer number formats - set up the flags and "break" */ |
| 657 | case 'o': |
| 658 | base = 8; |
| 659 | break; |
| 660 | |
wdenk | 153d511 | 2002-08-30 11:07:04 +0000 | [diff] [blame] | 661 | case 'x': |
Mike Frysinger | 6c6166f | 2009-02-16 23:21:36 -0500 | [diff] [blame] | 662 | flags |= SMALL; |
| 663 | case 'X': |
wdenk | 153d511 | 2002-08-30 11:07:04 +0000 | [diff] [blame] | 664 | base = 16; |
| 665 | break; |
| 666 | |
| 667 | case 'd': |
| 668 | case 'i': |
| 669 | flags |= SIGN; |
| 670 | case 'u': |
| 671 | break; |
| 672 | |
| 673 | default: |
Sonny Rao | 046a37b | 2011-11-02 09:52:08 +0000 | [diff] [blame] | 674 | ADDCH(str, '%'); |
wdenk | 153d511 | 2002-08-30 11:07:04 +0000 | [diff] [blame] | 675 | if (*fmt) |
Sonny Rao | 046a37b | 2011-11-02 09:52:08 +0000 | [diff] [blame] | 676 | ADDCH(str, *fmt); |
wdenk | 153d511 | 2002-08-30 11:07:04 +0000 | [diff] [blame] | 677 | else |
| 678 | --fmt; |
| 679 | continue; |
| 680 | } |
Mike Frysinger | 6c6166f | 2009-02-16 23:21:36 -0500 | [diff] [blame] | 681 | if (qualifier == 'L') /* "quad" for 64 bit variables */ |
wdenk | c40b295 | 2004-03-13 23:29:43 +0000 | [diff] [blame] | 682 | num = va_arg(args, unsigned long long); |
Heiko Schocher | 4b142fe | 2009-12-03 11:21:21 +0100 | [diff] [blame] | 683 | else if (qualifier == 'l') { |
wdenk | 153d511 | 2002-08-30 11:07:04 +0000 | [diff] [blame] | 684 | num = va_arg(args, unsigned long); |
Mike Frysinger | 6c6166f | 2009-02-16 23:21:36 -0500 | [diff] [blame] | 685 | if (flags & SIGN) |
| 686 | num = (signed long) num; |
Jean-Christophe PLAGNIOL-VILLARD | f354b73 | 2008-07-14 14:11:45 +0200 | [diff] [blame] | 687 | } else if (qualifier == 'Z' || qualifier == 'z') { |
| 688 | num = va_arg(args, size_t); |
| 689 | } else if (qualifier == 't') { |
| 690 | num = va_arg(args, ptrdiff_t); |
| 691 | } else if (qualifier == 'h') { |
wdenk | 153d511 | 2002-08-30 11:07:04 +0000 | [diff] [blame] | 692 | num = (unsigned short) va_arg(args, int); |
| 693 | if (flags & SIGN) |
Mike Frysinger | 6c6166f | 2009-02-16 23:21:36 -0500 | [diff] [blame] | 694 | num = (signed short) num; |
| 695 | } else { |
wdenk | 153d511 | 2002-08-30 11:07:04 +0000 | [diff] [blame] | 696 | num = va_arg(args, unsigned int); |
Mike Frysinger | 6c6166f | 2009-02-16 23:21:36 -0500 | [diff] [blame] | 697 | if (flags & SIGN) |
| 698 | num = (signed int) num; |
| 699 | } |
Sonny Rao | 046a37b | 2011-11-02 09:52:08 +0000 | [diff] [blame] | 700 | str = number(str, end, num, base, field_width, precision, |
| 701 | flags); |
wdenk | 153d511 | 2002-08-30 11:07:04 +0000 | [diff] [blame] | 702 | } |
Sonny Rao | 046a37b | 2011-11-02 09:52:08 +0000 | [diff] [blame] | 703 | |
Sonny Rao | 046a37b | 2011-11-02 09:52:08 +0000 | [diff] [blame] | 704 | if (size > 0) { |
| 705 | ADDCH(str, '\0'); |
| 706 | if (str > end) |
| 707 | end[-1] = '\0'; |
Darwin Rambo | 686f60f | 2013-12-19 15:14:19 -0800 | [diff] [blame] | 708 | --str; |
Sonny Rao | 046a37b | 2011-11-02 09:52:08 +0000 | [diff] [blame] | 709 | } |
Sonny Rao | 046a37b | 2011-11-02 09:52:08 +0000 | [diff] [blame] | 710 | /* the trailing null byte doesn't count towards the total */ |
Daniel Schwierzeck | 8acdae6 | 2012-09-16 06:55:03 +0000 | [diff] [blame] | 711 | return str - buf; |
wdenk | 153d511 | 2002-08-30 11:07:04 +0000 | [diff] [blame] | 712 | } |
| 713 | |
Sonny Rao | 046a37b | 2011-11-02 09:52:08 +0000 | [diff] [blame] | 714 | int vsnprintf(char *buf, size_t size, const char *fmt, |
| 715 | va_list args) |
| 716 | { |
| 717 | return vsnprintf_internal(buf, size, fmt, args); |
| 718 | } |
| 719 | |
Sonny Rao | 046a37b | 2011-11-02 09:52:08 +0000 | [diff] [blame] | 720 | int vscnprintf(char *buf, size_t size, const char *fmt, va_list args) |
| 721 | { |
| 722 | int i; |
| 723 | |
| 724 | i = vsnprintf(buf, size, fmt, args); |
| 725 | |
| 726 | if (likely(i < size)) |
| 727 | return i; |
| 728 | if (size != 0) |
| 729 | return size - 1; |
| 730 | return 0; |
| 731 | } |
| 732 | |
Sonny Rao | 046a37b | 2011-11-02 09:52:08 +0000 | [diff] [blame] | 733 | int snprintf(char *buf, size_t size, const char *fmt, ...) |
| 734 | { |
| 735 | va_list args; |
| 736 | int i; |
| 737 | |
| 738 | va_start(args, fmt); |
| 739 | i = vsnprintf(buf, size, fmt, args); |
| 740 | va_end(args); |
| 741 | |
| 742 | return i; |
| 743 | } |
| 744 | |
Sonny Rao | 046a37b | 2011-11-02 09:52:08 +0000 | [diff] [blame] | 745 | int scnprintf(char *buf, size_t size, const char *fmt, ...) |
| 746 | { |
| 747 | va_list args; |
| 748 | int i; |
| 749 | |
| 750 | va_start(args, fmt); |
| 751 | i = vscnprintf(buf, size, fmt, args); |
| 752 | va_end(args); |
| 753 | |
| 754 | return i; |
| 755 | } |
Sonny Rao | 046a37b | 2011-11-02 09:52:08 +0000 | [diff] [blame] | 756 | |
| 757 | /** |
| 758 | * Format a string and place it in a buffer (va_list version) |
| 759 | * |
| 760 | * @param buf The buffer to place the result into |
| 761 | * @param fmt The format string to use |
| 762 | * @param args Arguments for the format string |
| 763 | * |
| 764 | * The function returns the number of characters written |
| 765 | * into @buf. Use vsnprintf() or vscnprintf() in order to avoid |
| 766 | * buffer overflows. |
| 767 | * |
| 768 | * If you're not already dealing with a va_list consider using sprintf(). |
| 769 | */ |
| 770 | int vsprintf(char *buf, const char *fmt, va_list args) |
| 771 | { |
| 772 | return vsnprintf_internal(buf, INT_MAX, fmt, args); |
| 773 | } |
| 774 | |
Daniel Schwierzeck | 8acdae6 | 2012-09-16 06:55:03 +0000 | [diff] [blame] | 775 | int sprintf(char *buf, const char *fmt, ...) |
wdenk | 153d511 | 2002-08-30 11:07:04 +0000 | [diff] [blame] | 776 | { |
| 777 | va_list args; |
| 778 | int i; |
| 779 | |
| 780 | va_start(args, fmt); |
Daniel Schwierzeck | 8acdae6 | 2012-09-16 06:55:03 +0000 | [diff] [blame] | 781 | i = vsprintf(buf, fmt, args); |
wdenk | 153d511 | 2002-08-30 11:07:04 +0000 | [diff] [blame] | 782 | va_end(args); |
| 783 | return i; |
| 784 | } |
| 785 | |
Alex Kiernan | 4f1eed7 | 2018-04-19 04:32:55 +0000 | [diff] [blame] | 786 | #if CONFIG_IS_ENABLED(PRINTF) |
Stefan Roese | 7d9cde1 | 2015-11-23 07:00:22 +0100 | [diff] [blame] | 787 | int printf(const char *fmt, ...) |
| 788 | { |
| 789 | va_list args; |
| 790 | uint i; |
| 791 | char printbuffer[CONFIG_SYS_PBSIZE]; |
| 792 | |
| 793 | va_start(args, fmt); |
| 794 | |
| 795 | /* |
| 796 | * For this to work, printbuffer must be larger than |
| 797 | * anything we ever want to print. |
| 798 | */ |
| 799 | i = vscnprintf(printbuffer, sizeof(printbuffer), fmt, args); |
| 800 | va_end(args); |
| 801 | |
Heinrich Schuchardt | 256060e | 2018-01-10 18:06:08 +0100 | [diff] [blame] | 802 | /* Handle error */ |
| 803 | if (i <= 0) |
| 804 | return i; |
Stefan Roese | 7d9cde1 | 2015-11-23 07:00:22 +0100 | [diff] [blame] | 805 | /* Print the string */ |
| 806 | puts(printbuffer); |
| 807 | return i; |
| 808 | } |
| 809 | |
| 810 | int vprintf(const char *fmt, va_list args) |
| 811 | { |
| 812 | uint i; |
| 813 | char printbuffer[CONFIG_SYS_PBSIZE]; |
| 814 | |
| 815 | /* |
| 816 | * For this to work, printbuffer must be larger than |
| 817 | * anything we ever want to print. |
| 818 | */ |
| 819 | i = vscnprintf(printbuffer, sizeof(printbuffer), fmt, args); |
| 820 | |
Heinrich Schuchardt | 256060e | 2018-01-10 18:06:08 +0100 | [diff] [blame] | 821 | /* Handle error */ |
| 822 | if (i <= 0) |
| 823 | return i; |
Stefan Roese | 7d9cde1 | 2015-11-23 07:00:22 +0100 | [diff] [blame] | 824 | /* Print the string */ |
| 825 | puts(printbuffer); |
| 826 | return i; |
| 827 | } |
Alex Kiernan | 4f1eed7 | 2018-04-19 04:32:55 +0000 | [diff] [blame] | 828 | #endif |
Simon Glass | 6631237 | 2015-02-27 22:06:32 -0700 | [diff] [blame] | 829 | |
Simon Glass | 3cce8a5 | 2011-10-21 18:51:33 +0000 | [diff] [blame] | 830 | char *simple_itoa(ulong i) |
| 831 | { |
| 832 | /* 21 digits plus null terminator, good for 64-bit or smaller ints */ |
| 833 | static char local[22]; |
| 834 | char *p = &local[21]; |
| 835 | |
| 836 | *p-- = '\0'; |
| 837 | do { |
| 838 | *p-- = '0' + i % 10; |
| 839 | i /= 10; |
| 840 | } while (i > 0); |
| 841 | return p + 1; |
| 842 | } |
Simon Glass | b8bcaa3 | 2013-06-11 11:14:38 -0700 | [diff] [blame] | 843 | |
| 844 | /* We don't seem to have %'d in U-Boot */ |
| 845 | void print_grouped_ull(unsigned long long int_val, int digits) |
| 846 | { |
| 847 | char str[21], *s; |
| 848 | int grab = 3; |
| 849 | |
| 850 | digits = (digits + 2) / 3; |
| 851 | sprintf(str, "%*llu", digits * 3, int_val); |
| 852 | for (s = str; *s; s += grab) { |
| 853 | if (s != str) |
| 854 | putc(s[-1] != ' ' ? ',' : ' '); |
| 855 | printf("%.*s", grab, s); |
| 856 | grab = 3; |
| 857 | } |
| 858 | } |
Heiko Schocher | 09c3280 | 2015-04-27 07:42:05 +0200 | [diff] [blame] | 859 | |
| 860 | bool str2off(const char *p, loff_t *num) |
| 861 | { |
| 862 | char *endptr; |
| 863 | |
| 864 | *num = simple_strtoull(p, &endptr, 16); |
| 865 | return *p != '\0' && *endptr == '\0'; |
| 866 | } |
| 867 | |
| 868 | bool str2long(const char *p, ulong *num) |
| 869 | { |
| 870 | char *endptr; |
| 871 | |
| 872 | *num = simple_strtoul(p, &endptr, 16); |
| 873 | return *p != '\0' && *endptr == '\0'; |
| 874 | } |
Simon Glass | 2189d5f | 2019-11-14 12:57:20 -0700 | [diff] [blame] | 875 | |
| 876 | char *strmhz(char *buf, unsigned long hz) |
| 877 | { |
| 878 | long l, n; |
| 879 | long m; |
| 880 | |
| 881 | n = DIV_ROUND_CLOSEST(hz, 1000) / 1000L; |
| 882 | l = sprintf(buf, "%ld", n); |
| 883 | |
| 884 | hz -= n * 1000000L; |
| 885 | m = DIV_ROUND_CLOSEST(hz, 1000L); |
| 886 | if (m != 0) |
| 887 | sprintf(buf + l, ".%03ld", m); |
| 888 | |
| 889 | return buf; |
| 890 | } |