[444] | 1 | /* |
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| 2 | * Copyright (c) 1990 The Regents of the University of California. |
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| 3 | * All rights reserved. |
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| 4 | * |
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| 5 | * This code is derived from software contributed to Berkeley by |
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| 6 | * Chris Torek. |
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| 7 | * |
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| 8 | * Redistribution and use in source and binary forms, with or without |
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| 9 | * modification, are permitted provided that the following conditions |
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| 10 | * are met: |
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| 11 | * 1. Redistributions of source code must retain the above copyright |
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| 12 | * notice, this list of conditions and the following disclaimer. |
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| 13 | * 2. Redistributions in binary form must reproduce the above copyright |
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| 14 | * notice, this list of conditions and the following disclaimer in the |
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| 15 | * documentation and/or other materials provided with the distribution. |
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| 16 | * 3. Neither the name of the University nor the names of its contributors |
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| 17 | * may be used to endorse or promote products derived from this software |
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| 18 | * without specific prior written permission. |
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| 19 | * |
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| 20 | * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND |
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| 21 | * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE |
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| 22 | * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE |
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| 23 | * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE |
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| 24 | * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL |
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| 25 | * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS |
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| 26 | * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) |
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| 27 | * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT |
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| 28 | * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY |
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| 29 | * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF |
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| 30 | * SUCH DAMAGE. |
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| 31 | */ |
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| 32 | |
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| 33 | /* |
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| 34 | * Copyright (c) 2012-2014 ARM Ltd |
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| 35 | * All rights reserved. |
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| 36 | * |
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| 37 | * Redistribution and use in source and binary forms, with or without |
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| 38 | * modification, are permitted provided that the following conditions |
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| 39 | * are met: |
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| 40 | * 1. Redistributions of source code must retain the above copyright |
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| 41 | * notice, this list of conditions and the following disclaimer. |
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| 42 | * 2. Redistributions in binary form must reproduce the above copyright |
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| 43 | * notice, this list of conditions and the following disclaimer in the |
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| 44 | * documentation and/or other materials provided with the distribution. |
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| 45 | * 3. The name of the company may not be used to endorse or promote |
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| 46 | * products derived from this software without specific prior written |
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| 47 | * permission. |
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| 48 | * |
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| 49 | * THIS SOFTWARE IS PROVIDED BY ARM LTD ``AS IS'' AND ANY EXPRESS OR IMPLIED |
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| 50 | * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF |
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| 51 | * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. |
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| 52 | * IN NO EVENT SHALL ARM LTD BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, |
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| 53 | * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED |
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| 54 | * TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR |
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| 55 | * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF |
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| 56 | * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING |
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| 57 | * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS |
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| 58 | * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
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| 59 | */ |
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| 60 | |
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| 61 | #ifndef VFPRINTF_LOCAL |
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| 62 | #define VFPRINTF_LOCAL |
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| 63 | |
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| 64 | #ifndef NO_FLOATING_POINT |
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| 65 | # define FLOATING_POINT |
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| 66 | #endif |
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| 67 | |
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| 68 | #define _NO_POS_ARGS |
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| 69 | #undef _WANT_IO_C99_FORMATS |
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| 70 | |
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| 71 | /* Currently a test is made to see if long double processing is warranted. |
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| 72 | This could be changed in the future should the _ldtoa_r code be |
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| 73 | preferred over _dtoa_r. */ |
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| 74 | #define _NO_LONGDBL |
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| 75 | |
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| 76 | #define _NO_LONGLONG |
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| 77 | |
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| 78 | #define _PRINTF_FLOAT_TYPE double |
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| 79 | |
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| 80 | #if defined (FLOATING_POINT) |
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| 81 | # include <locale.h> |
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| 82 | #endif |
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| 83 | #ifdef FLOATING_POINT |
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| 84 | # include <math.h> |
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| 85 | |
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| 86 | /* For %La, an exponent of 15 bits occupies the exponent character, |
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| 87 | a sign, and up to 5 digits. */ |
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| 88 | # define MAXEXPLEN 7 |
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| 89 | # define DEFPREC 6 |
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| 90 | |
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| 91 | extern char *_dtoa_r (struct _reent *, double, int, |
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| 92 | int, int *, int *, char **); |
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| 93 | |
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| 94 | # define _DTOA_R _dtoa_r |
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| 95 | # define FREXP frexp |
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| 96 | |
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| 97 | #endif /* FLOATING_POINT. */ |
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| 98 | |
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| 99 | /* BUF must be big enough for the maximum %#llo (assuming long long is |
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| 100 | at most 64 bits, this would be 23 characters), the maximum |
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| 101 | multibyte character %C, and the maximum default precision of %La |
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| 102 | (assuming long double is at most 128 bits with 113 bits of |
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| 103 | mantissa, this would be 29 characters). %e, %f, and %g use |
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| 104 | reentrant storage shared with mprec. All other formats that use |
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| 105 | buf get by with fewer characters. Making BUF slightly bigger |
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| 106 | reduces the need for malloc in %.*a and %S, when large precision or |
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| 107 | long strings are processed. |
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| 108 | The bigger size of 100 bytes is used on systems which allow number |
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| 109 | strings using the locale's grouping character. Since that's a multibyte |
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| 110 | value, we should use a conservative value. */ |
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| 111 | #define BUF 40 |
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| 112 | |
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| 113 | #define quad_t long |
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| 114 | #define u_quad_t unsigned long |
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| 115 | |
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| 116 | typedef quad_t * quad_ptr_t; |
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| 117 | typedef void *void_ptr_t; |
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| 118 | typedef char * char_ptr_t; |
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| 119 | typedef long * long_ptr_t; |
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| 120 | typedef int * int_ptr_t; |
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| 121 | typedef short * short_ptr_t; |
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| 122 | |
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| 123 | /* Macros for converting digits to letters and vice versa. */ |
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| 124 | #define to_digit(c) ((c) - '0') |
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| 125 | #define is_digit(c) ((unsigned)to_digit (c) <= 9) |
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| 126 | #define to_char(n) ((n) + '0') |
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| 127 | |
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| 128 | /* Flags used during conversion. */ |
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| 129 | #define ALT 0x001 /* Alternate form. */ |
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| 130 | #define LADJUST 0x002 /* Left adjustment. */ |
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| 131 | #define ZEROPAD 0x004 /* Zero (as opposed to blank) pad. */ |
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| 132 | #define PLUSSGN 0x008 /* Plus sign flag. */ |
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| 133 | #define SPACESGN 0x010 /* Space flag. */ |
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| 134 | #define HEXPREFIX 0x020 /* Add 0x or 0X prefix. */ |
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| 135 | #define SHORTINT 0x040 /* Short integer. */ |
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| 136 | #define LONGINT 0x080 /* Long integer. */ |
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| 137 | #define LONGDBL 0x100 /* Long double. */ |
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| 138 | /* ifdef _NO_LONGLONG, make QUADINT equivalent to LONGINT, so |
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| 139 | that %lld behaves the same as %ld, not as %d, as expected if: |
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| 140 | sizeof (long long) = sizeof long > sizeof int. */ |
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| 141 | #define QUADINT LONGINT |
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| 142 | #define FPT 0x400 /* Floating point number. */ |
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| 143 | /* Define as 0, to make SARG and UARG occupy fewer instructions. */ |
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| 144 | # define CHARINT 0 |
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| 145 | |
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| 146 | /* Macros to support positional arguments. */ |
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| 147 | #define GET_ARG(n, ap, type) (va_arg ((ap), type)) |
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| 148 | |
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| 149 | /* To extend shorts properly, we need both signed and unsigned |
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| 150 | argument extraction methods. Also they should be used in nano-vfprintf_i.c |
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| 151 | and nano-vfprintf_float.c only, since ap is a pointer to va_list. */ |
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| 152 | #define SARG(flags) \ |
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| 153 | (flags&LONGINT ? GET_ARG (N, (*ap), long) : \ |
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| 154 | flags&SHORTINT ? (long)(short)GET_ARG (N, (*ap), int) : \ |
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| 155 | flags&CHARINT ? (long)(signed char)GET_ARG (N, (*ap), int) : \ |
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| 156 | (long)GET_ARG (N, (*ap), int)) |
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| 157 | #define UARG(flags) \ |
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| 158 | (flags&LONGINT ? GET_ARG (N, (*ap), u_long) : \ |
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| 159 | flags&SHORTINT ? (u_long)(u_short)GET_ARG (N, (*ap), int) : \ |
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| 160 | flags&CHARINT ? (u_long)(unsigned char)GET_ARG (N, (*ap), int) : \ |
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| 161 | (u_long)GET_ARG (N, (*ap), u_int)) |
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| 162 | |
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| 163 | /* BEWARE, these `goto error' on error. And they are used |
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| 164 | in more than one functions. |
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| 165 | |
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| 166 | Following macros are each referred about twice in printf for integer, |
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| 167 | so it is not worth to rewrite them into functions. This situation may |
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| 168 | change in the future. */ |
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| 169 | #define PRINT(ptr, len) { \ |
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| 170 | if (pfunc (data, fp, (ptr), (len)) == EOF) \ |
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| 171 | goto error; \ |
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| 172 | } |
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| 173 | #define PAD(howmany, ch) { \ |
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| 174 | int temp_i = 0; \ |
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| 175 | while (temp_i < (howmany)) \ |
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| 176 | { \ |
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| 177 | if (pfunc (data, fp, &(ch), 1) == EOF) \ |
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| 178 | goto error; \ |
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| 179 | temp_i++; \ |
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| 180 | } \ |
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| 181 | } |
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| 182 | #define PRINTANDPAD(p, ep, len, ch) { \ |
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| 183 | int temp_n = (ep) - (p); \ |
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| 184 | if (temp_n > (len)) \ |
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| 185 | temp_n = (len); \ |
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| 186 | if (temp_n > 0) \ |
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| 187 | PRINT((p), temp_n); \ |
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| 188 | PAD((len) - (temp_n > 0 ? temp_n : 0), (ch)); \ |
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| 189 | } |
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| 190 | |
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| 191 | /* All data needed to decode format string are kept in below struct. */ |
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| 192 | struct _prt_data_t |
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| 193 | { |
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| 194 | int flags; /* Flags. */ |
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| 195 | int prec; /* Precision. */ |
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| 196 | int dprec; /* Decimal precision. */ |
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| 197 | int width; /* Width. */ |
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| 198 | int size; /* Size of converted field or string. */ |
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| 199 | int ret; /* Return value accumulator. */ |
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| 200 | char code; /* Current conversion specifier. */ |
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| 201 | char blank; /* Blank character. */ |
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| 202 | char zero; /* Zero character. */ |
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| 203 | char buf[BUF]; /* Output buffer for non-floating point number. */ |
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| 204 | char l_buf[3]; /* Sign&hex_prefix, "+/-" and "0x/X". */ |
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| 205 | #ifdef FLOATING_POINT |
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| 206 | _PRINTF_FLOAT_TYPE _double_; /* Double value. */ |
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| 207 | char expstr[MAXEXPLEN]; /* Buffer for exponent string. */ |
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| 208 | int lead; /* The sig figs before decimal or group sep. */ |
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| 209 | #endif |
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| 210 | }; |
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| 211 | |
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| 212 | extern int |
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| 213 | _printf_common (struct _reent *data, |
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| 214 | struct _prt_data_t *pdata, |
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| 215 | int *realsz, |
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| 216 | FILE *fp, |
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| 217 | int (*pfunc)(struct _reent *, FILE *, |
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| 218 | const char *, size_t len)); |
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| 219 | |
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| 220 | extern int |
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| 221 | _printf_i (struct _reent *data, struct _prt_data_t *pdata, FILE *fp, |
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| 222 | int (*pfunc)(struct _reent *, FILE *, const char *, size_t len), |
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| 223 | va_list *ap); |
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| 224 | |
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| 225 | /* Make _printf_float weak symbol, so it won't be linked in if target program |
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| 226 | does not need it. */ |
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| 227 | extern int |
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| 228 | _printf_float (struct _reent *data, |
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| 229 | struct _prt_data_t *pdata, |
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| 230 | FILE *fp, |
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| 231 | int (*pfunc)(struct _reent *, FILE *, |
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| 232 | const char *, size_t len), |
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| 233 | va_list *ap) _ATTRIBUTE((__weak__)); |
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| 234 | #endif |
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