// SPDX-License-Identifier: GPL-2.0-or-later/* * Copyright (C) Paul Mackerras 1997. */#include <stdarg.h>#include <stddef.h>#include "string.h"#include "stdio.h"#include "ops.h" size_t strnlen(const char * s, size_t count){ const char *sc; for (sc = s; count-- && *sc != '\0'; ++sc) /* nothing */; return sc - s;} char *strrchr(const char *s, int c){ const char *last = NULL; do { if (*s == (char)c) last = s; } while (*s++); return (char *)last;} #ifdef __powerpc64__ # define do_div(n, base) ({ \ unsigned int __base = (base); \ unsigned int __rem; \ __rem = ((unsigned long long)(n)) % __base; \ (n) = ((unsigned long long)(n)) / __base; \ __rem; \}) #else extern unsigned int __div64_32(unsigned long long *dividend, unsigned int divisor); /* The unnecessary pointer compare is there * to check for type safety (n must be 64bit) */# define do_div(n,base) ({ \ unsigned int __base = (base); \ unsigned int __rem; \ (void)(((typeof((n)) *)0) == ((unsigned long long *)0)); \ if (((n) >> 32) == 0) { \ __rem = (unsigned int)(n) % __base; \ (n) = (unsigned int)(n) / __base; \ } else \ __rem = __div64_32(&(n), __base); \ __rem; \ }) #endif /* __powerpc64__ */ static int skip_atoi(const char **s){ int i, c; for (i = 0; '0' <= (c = **s) && c <= '9'; ++*s) i = i*10 + c - '0'; return i;} #define ZEROPAD 1 /* pad with zero */#define SIGN 2 /* unsigned/signed long */#define PLUS 4 /* show plus */#define SPACE 8 /* space if plus */#define LEFT 16 /* left justified */#define SPECIAL 32 /* 0x */#define LARGE 64 /* use 'ABCDEF' instead of 'abcdef' */ static char * number(char * str, unsigned long long num, int base, int size, int precision, int type){ char c,sign,tmp[66]; const char *digits="0123456789abcdefghijklmnopqrstuvwxyz"; int i; if (type & LARGE) digits = "0123456789ABCDEFGHIJKLMNOPQRSTUVWXYZ"; if (type & LEFT) type &= ~ZEROPAD; if (base < 2 || base > 36) return 0; c = (type & ZEROPAD) ? '0' : ' '; sign = 0; if (type & SIGN) { if ((signed long long)num < 0) { sign = '-'; num = - (signed long long)num; size--; } else if (type & PLUS) { sign = '+'; size--; } else if (type & SPACE) { sign = ' '; size--; } } if (type & SPECIAL) { if (base == 16) size -= 2; else if (base == 8) size--; } i = 0; if (num == 0) tmp[i++]='0'; else while (num != 0) { tmp[i++] = digits[do_div(num, base)]; } if (i > precision) precision = i; size -= precision; if (!(type&(ZEROPAD+LEFT))) while(size-->0) *str++ = ' '; if (sign) *str++ = sign; if (type & SPECIAL) { if (base==8) *str++ = '0'; else if (base==16) { *str++ = '0'; *str++ = digits[33]; } } if (!(type & LEFT)) while (size-- > 0) *str++ = c; while (i < precision--) *str++ = '0'; while (i-- > 0) *str++ = tmp[i]; while (size-- > 0) *str++ = ' '; return str;} int vsprintf(char *buf, const char *fmt, va_list args){ int len; unsigned long long num; int i, base; char * str; const char *s; int flags; /* flags to number() */ int field_width; /* width of output field */ int precision; /* min. # of digits for integers; max number of chars for from string */ int qualifier; /* 'h', 'l', or 'L' for integer fields */ /* 'z' support added 23/7/1999 S.H. */ /* 'z' changed to 'Z' --davidm 1/25/99 */ for (str=buf ; *fmt ; ++fmt) { if (*fmt != '%') { *str++ = *fmt; continue; } /* process flags */ flags = 0; repeat: ++fmt; /* this also skips first '%' */ switch (*fmt) { case '-': flags |= LEFT; goto repeat; case '+': flags |= PLUS; goto repeat; case ' ': flags |= SPACE; goto repeat; case '#': flags |= SPECIAL; goto repeat; case '0': flags |= ZEROPAD; goto repeat; } /* get field width */ field_width = -1; if ('0' <= *fmt && *fmt <= '9') field_width = skip_atoi(&fmt); else if (*fmt == '*') { ++fmt; /* it's the next argument */ field_width = va_arg(args, int); if (field_width < 0) { field_width = -field_width; flags |= LEFT; } } /* get the precision */ precision = -1; if (*fmt == '.') { ++fmt; if ('0' <= *fmt && *fmt <= '9') precision = skip_atoi(&fmt); else if (*fmt == '*') { ++fmt; /* it's the next argument */ precision = va_arg(args, int); } if (precision < 0) precision = 0; } /* get the conversion qualifier */ qualifier = -1; if (*fmt == 'l' && *(fmt + 1) == 'l') { qualifier = 'q'; fmt += 2; } else if (*fmt == 'h' || *fmt == 'l' || *fmt == 'L' || *fmt == 'Z') { qualifier = *fmt; ++fmt; } /* default base */ base = 10; switch (*fmt) { case 'c': if (!(flags & LEFT)) while (--field_width > 0) *str++ = ' '; *str++ = (unsigned char) va_arg(args, int); while (--field_width > 0) *str++ = ' '; continue; case 's': s = va_arg(args, char *); if (!s) s = "<NULL>"; len = strnlen(s, precision); if (!(flags & LEFT)) while (len < field_width--) *str++ = ' '; for (i = 0; i < len; ++i) *str++ = *s++; while (len < field_width--) *str++ = ' '; continue; case 'p': if (field_width == -1) { field_width = 2*sizeof(void *); flags |= ZEROPAD; } str = number(str, (unsigned long) va_arg(args, void *), 16, field_width, precision, flags); continue; case 'n': if (qualifier == 'l') { long * ip = va_arg(args, long *); *ip = (str - buf); } else if (qualifier == 'Z') { size_t * ip = va_arg(args, size_t *); *ip = (str - buf); } else { int * ip = va_arg(args, int *); *ip = (str - buf); } continue; case '%': *str++ = '%'; continue; /* integer number formats - set up the flags and "break" */ case 'o': base = 8; break; case 'X': flags |= LARGE; case 'x': base = 16; break; case 'd': case 'i': flags |= SIGN; case 'u': break; default: *str++ = '%'; if (*fmt) *str++ = *fmt; else --fmt; continue; } if (qualifier == 'l') { num = va_arg(args, unsigned long); if (flags & SIGN) num = (signed long) num; } else if (qualifier == 'q') { num = va_arg(args, unsigned long long); if (flags & SIGN) num = (signed long long) num; } else if (qualifier == 'Z') { num = va_arg(args, size_t); } else if (qualifier == 'h') { num = (unsigned short) va_arg(args, int); if (flags & SIGN) num = (signed short) num; } else { num = va_arg(args, unsigned int); if (flags & SIGN) num = (signed int) num; } str = number(str, num, base, field_width, precision, flags); } *str = '\0'; return str-buf;} static char sprint_buf[1024]; intprintf(const char *fmt, ...){ va_list args; int n; va_start(args, fmt); n = vsprintf(sprint_buf, fmt, args); va_end(args); if (console_ops.write) console_ops.write(sprint_buf, n); return n;}
// SPDX-License-Identifier: GPL-2.0-or-later
/*
* Copyright (C) Paul Mackerras 1997.
*/
#include <stdarg.h>
#include <stddef.h>
#include "string.h"
#include "stdio.h"
#include "ops.h"
size_t strnlen(const char * s, size_t count)
{
const char *sc;
for (sc = s; count-- && *sc != '\0'; ++sc)
/* nothing */;
return sc - s;
}
char *strrchr(const char *s, int c)
{
const char *last = NULL;
do {
if (*s == (char)c)
last = s;
} while (*s++);
return (char *)last;
}
#ifdef __powerpc64__
# define do_div(n, base) ({ \
unsigned int __base = (base); \
unsigned int __rem; \
__rem = ((unsigned long long)(n)) % __base; \
(n) = ((unsigned long long)(n)) / __base; \
__rem; \
})
#else
extern unsigned int __div64_32(unsigned long long *dividend,
unsigned int divisor);
/* The unnecessary pointer compare is there
* to check for type safety (n must be 64bit)
*/
# define do_div(n,base) ({ \
unsigned int __base = (base); \
unsigned int __rem; \
(void)(((typeof((n)) *)0) == ((unsigned long long *)0)); \
if (((n) >> 32) == 0) { \
__rem = (unsigned int)(n) % __base; \
(n) = (unsigned int)(n) / __base; \
} else \
__rem = __div64_32(&(n), __base); \
__rem; \
})
#endif /* __powerpc64__ */
static int skip_atoi(const char **s)
{
int i, c;
for (i = 0; '0' <= (c = **s) && c <= '9'; ++*s)
i = i*10 + c - '0';
return i;
}
#define ZEROPAD 1 /* pad with zero */
#define SIGN 2 /* unsigned/signed long */
#define PLUS 4 /* show plus */
#define SPACE 8 /* space if plus */
#define LEFT 16 /* left justified */
#define SPECIAL 32 /* 0x */
#define LARGE 64 /* use 'ABCDEF' instead of 'abcdef' */
static char * number(char * str, unsigned long long num, int base, int size, int precision, int type)
{
char c,sign,tmp[66];
const char *digits="0123456789abcdefghijklmnopqrstuvwxyz";
int i;
if (type & LARGE)
digits = "0123456789ABCDEFGHIJKLMNOPQRSTUVWXYZ";
if (type & LEFT)
type &= ~ZEROPAD;
if (base < 2 || base > 36)
return 0;
c = (type & ZEROPAD) ? '0' : ' ';
sign = 0;
if (type & SIGN) {
if ((signed long long)num < 0) {
sign = '-';
num = - (signed long long)num;
size--;
} else if (type & PLUS) {
sign = '+';
size--;
} else if (type & SPACE) {
sign = ' ';
size--;
}
}
if (type & SPECIAL) {
if (base == 16)
size -= 2;
else if (base == 8)
size--;
}
i = 0;
if (num == 0)
tmp[i++]='0';
else while (num != 0) {
tmp[i++] = digits[do_div(num, base)];
}
if (i > precision)
precision = i;
size -= precision;
if (!(type&(ZEROPAD+LEFT)))
while(size-->0)
*str++ = ' ';
if (sign)
*str++ = sign;
if (type & SPECIAL) {
if (base==8)
*str++ = '0';
else if (base==16) {
*str++ = '0';
*str++ = digits[33];
}
}
if (!(type & LEFT))
while (size-- > 0)
*str++ = c;
while (i < precision--)
*str++ = '0';
while (i-- > 0)
*str++ = tmp[i];
while (size-- > 0)
*str++ = ' ';
return str;
}
int vsprintf(char *buf, const char *fmt, va_list args)
{
int len;
unsigned long long num;
int i, base;
char * str;
const char *s;
int flags; /* flags to number() */
int field_width; /* width of output field */
int precision; /* min. # of digits for integers; max
number of chars for from string */
int qualifier; /* 'h', 'l', or 'L' for integer fields */
/* 'z' support added 23/7/1999 S.H. */
/* 'z' changed to 'Z' --davidm 1/25/99 */
for (str=buf ; *fmt ; ++fmt) {
if (*fmt != '%') {
*str++ = *fmt;
continue;
}
/* process flags */
flags = 0;
repeat:
++fmt; /* this also skips first '%' */
switch (*fmt) {
case '-': flags |= LEFT; goto repeat;
case '+': flags |= PLUS; goto repeat;
case ' ': flags |= SPACE; goto repeat;
case '#': flags |= SPECIAL; goto repeat;
case '0': flags |= ZEROPAD; goto repeat;
}
/* get field width */
field_width = -1;
if ('0' <= *fmt && *fmt <= '9')
field_width = skip_atoi(&fmt);
else if (*fmt == '*') {
++fmt;
/* it's the next argument */
field_width = va_arg(args, int);
if (field_width < 0) {
field_width = -field_width;
flags |= LEFT;
}
}
/* get the precision */
precision = -1;
if (*fmt == '.') {
++fmt;
if ('0' <= *fmt && *fmt <= '9')
precision = skip_atoi(&fmt);
else if (*fmt == '*') {
++fmt;
/* it's the next argument */
precision = va_arg(args, int);
}
if (precision < 0)
precision = 0;
}
/* get the conversion qualifier */
qualifier = -1;
if (*fmt == 'l' && *(fmt + 1) == 'l') {
qualifier = 'q';
fmt += 2;
} else if (*fmt == 'h' || *fmt == 'l' || *fmt == 'L'
|| *fmt == 'Z') {
qualifier = *fmt;
++fmt;
}
/* default base */
base = 10;
switch (*fmt) {
case 'c':
if (!(flags & LEFT))
while (--field_width > 0)
*str++ = ' ';
*str++ = (unsigned char) va_arg(args, int);
while (--field_width > 0)
*str++ = ' ';
continue;
case 's':
s = va_arg(args, char *);
if (!s)
s = "<NULL>";
len = strnlen(s, precision);
if (!(flags & LEFT))
while (len < field_width--)
*str++ = ' ';
for (i = 0; i < len; ++i)
*str++ = *s++;
while (len < field_width--)
*str++ = ' ';
continue;
case 'p':
if (field_width == -1) {
field_width = 2*sizeof(void *);
flags |= ZEROPAD;
}
str = number(str,
(unsigned long) va_arg(args, void *), 16,
field_width, precision, flags);
continue;
case 'n':
if (qualifier == 'l') {
long * ip = va_arg(args, long *);
*ip = (str - buf);
} else if (qualifier == 'Z') {
size_t * ip = va_arg(args, size_t *);
*ip = (str - buf);
} else {
int * ip = va_arg(args, int *);
*ip = (str - buf);
}
continue;
case '%':
*str++ = '%';
continue;
/* integer number formats - set up the flags and "break" */
case 'o':
base = 8;
break;
case 'X':
flags |= LARGE;
case 'x':
base = 16;
break;
case 'd':
case 'i':
flags |= SIGN;
case 'u':
break;
default:
*str++ = '%';
if (*fmt)
*str++ = *fmt;
else
--fmt;
continue;
}
if (qualifier == 'l') {
num = va_arg(args, unsigned long);
if (flags & SIGN)
num = (signed long) num;
} else if (qualifier == 'q') {
num = va_arg(args, unsigned long long);
if (flags & SIGN)
num = (signed long long) num;
} else if (qualifier == 'Z') {
num = va_arg(args, size_t);
} else if (qualifier == 'h') {
num = (unsigned short) va_arg(args, int);
if (flags & SIGN)
num = (signed short) num;
} else {
num = va_arg(args, unsigned int);
if (flags & SIGN)
num = (signed int) num;
}
str = number(str, num, base, field_width, precision, flags);
}
*str = '\0';
return str-buf;
}
static char sprint_buf[1024];
int
printf(const char *fmt, ...)
{
va_list args;
int n;
va_start(args, fmt);
n = vsprintf(sprint_buf, fmt, args);
va_end(args);
if (console_ops.write)
console_ops.write(sprint_buf, n);
return n;
}