/usr/share/sdcc/lib/src/printfl.c is in sdcc-libraries 2.9.0-5.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 | /*-----------------------------------------------------------------
printfl.c - source file for reduced version of printf
Written By - Sandeep Dutta . sandeep.dutta@usa.net (1999)
This library is free software; you can redistribute it and/or modify it
under the terms of the GNU Library General Public License as published by the
Free Software Foundation; either version 2, or (at your option) any
later version.
This library is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU Library General Public License for more details.
You should have received a copy of the GNU Library General Public License
along with this program; if not, write to the Free Software
Foundation, 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
In other words, you are welcome to use, share and improve this program.
You are forbidden to forbid anyone else to use, share and improve
what you give them. Help stamp out software-hoarding!
2001060401: Improved by was@icb.snz.chel.su
-------------------------------------------------------------------------*/
/* following formats are supported :-
format output type argument-type
%d decimal int
%ld decimal long
%hd decimal char
%x hexadecimal int
%lx hexadecimal long
%hx hexadecimal char
%o octal int
%lo octal long
%ho octal char
%c character char
%s character generic pointer
*/
#include <stdarg.h>
#include <stdio.h>
#include <stdlib.h>
#ifndef __ds390
/* just for the SP */
#include <8051.h>
#endif
static __data char radix ;
static __bit long_flag = 0;
static __bit string_flag =0;
static __bit char_flag = 0;
static char * __data str ;
static __data long val;
/* This great loop fails with the ds390 port (2003-01-13).
At the beginning resp. end of the loop the compiler inserts a "push ar2"
resp. "pop ar2", which badly interfers with the push/pop in the source.
Library functions should be rock solid and portable. There's an _ltoa in
the library, so let's use it and don't reinvent the wheel.
Bernhard
*/
#if NICE_LIFO_IMPLEMENTATION_BUT_NOT_PORTABLE
static __data volatile char ch;
static __bit sign;
static void pval(void)
{
volatile char sp;
unsigned long lval;
sp = SP;
if (val < 0 && radix != 16)
{
lval = -val;
sign = 1;
}
else { sign = 0; lval = val;}
if (!long_flag) {
lval &= 0x0000ffff;
}
if (char_flag) {
lval &= 0x000000ff;
}
do
{
# if 1
if(radix != 16) ch = (lval % radix) + '0';
else ch = "0123456789ABCDEF"[(unsigned char)lval & 0x0f];
__asm push _ch __endasm;
lval /= radix;
# else
// This only looks more efficient, but isn't. see the .map
ch = (lval % radix) + '0';
if (ch>'9') ch+=7;
__asm push _ch __endasm;
lval /= radix;
# endif
}
while (lval);
if (sign) {
ch = '-';
__asm push _ch __endasm;
}
while (sp != SP) {
__asm pop _ch __endasm;
putchar(ch);
}
}
#endif
void printf_small (char * fmt, ... ) __reentrant
{
va_list ap ;
va_start(ap,fmt);
for (; *fmt ; fmt++ ) {
if (*fmt == '%') {
long_flag = string_flag = char_flag = 0;
fmt++ ;
switch (*fmt) {
case 'l':
long_flag = 1;
fmt++;
break;
case 'h':
char_flag = 1;
fmt++;
}
switch (*fmt) {
case 's':
string_flag = 1;
break;
case 'd':
radix = 10;
break;
case 'x':
radix = 16;
break;
case 'c':
radix = 0;
break;
case 'o':
radix = 8;
break;
}
if (string_flag) {
str = va_arg(ap, char *);
while (*str) putchar(*str++);
continue ;
}
if (long_flag)
val = va_arg(ap,long);
else
if (char_flag)
val = va_arg(ap,char);
else
val = va_arg(ap,int);
#if NICE_LIFO_IMPLEMENTATION_BUT_NOT_PORTABLE
if (radix) pval();
#else
if (radix)
{
static char __idata buffer[12]; /* 37777777777(oct) */
char __idata * stri;
_ltoa (val, buffer, radix);
stri = buffer;
while (*stri)
{
putchar (*stri);
stri++;
}
}
#endif
else
putchar((char)val);
} else
putchar(*fmt);
}
}
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