mirror of
https://github.com/Fishwaldo/bl_mcu_sdk.git
synced 2025-03-15 19:31:43 +00:00
[feat][util] add vsnprintf nano, reduce codesize for boot2
This commit is contained in:
parent
53323e2c62
commit
41750c31cf
3 changed files with 534 additions and 1 deletions
|
@ -59,7 +59,12 @@ if(CONFIG_VLIBC)
|
|||
sdk_library_add_sources(vlibc/vlibc_vsnprintf.c)
|
||||
sdk_add_include_directories(vlibc)
|
||||
else()
|
||||
if(CONFIG_VSNPRINTF_NANO)
|
||||
sdk_library_add_sources(libc/vsnprintf_nano.c)
|
||||
else()
|
||||
sdk_library_add_sources(libc/vsnprintf.c)
|
||||
endif()
|
||||
|
||||
sdk_library_add_sources(libc/syscalls.c)
|
||||
sdk_library_add_sources(libc/printf.c)
|
||||
endif()
|
||||
|
@ -106,4 +111,4 @@ sdk_library_add_sources(bflb_timestamp/bflb_timestamp.c)
|
|||
sdk_add_include_directories(bflb_timestamp)
|
||||
|
||||
sdk_add_compile_options(-fno-builtin-printf)
|
||||
sdk_add_link_options(-u_malloc_r -u_vsnprintf)
|
||||
# sdk_add_link_options(-u_malloc_r -u_vsnprintf)
|
|
@ -9,6 +9,10 @@ int printf(const char *fmt, ...)
|
|||
uint32_t len;
|
||||
va_list ap;
|
||||
|
||||
if (console == NULL) {
|
||||
return 0;
|
||||
}
|
||||
|
||||
va_start(ap, fmt);
|
||||
len = vsnprintf(print_buf, sizeof(print_buf), fmt, ap);
|
||||
va_end(ap);
|
||||
|
|
524
utils/libc/vsnprintf_nano.c
Normal file
524
utils/libc/vsnprintf_nano.c
Normal file
|
@ -0,0 +1,524 @@
|
|||
/*
|
||||
* Copyright (c) 2006-2021, RT-Thread Development Team
|
||||
*
|
||||
* SPDX-License-Identifier: Apache-2.0
|
||||
*
|
||||
* Change Logs:
|
||||
* Date Author Notes
|
||||
* 2006-03-16 Bernard the first version
|
||||
* 2006-05-25 Bernard rewrite vsprintf
|
||||
* 2006-08-10 Bernard add rt_show_version
|
||||
* 2010-03-17 Bernard remove rt_strlcpy function
|
||||
* fix gcc compiling issue.
|
||||
* 2010-04-15 Bernard remove weak definition on ICCM16C compiler
|
||||
* 2012-07-18 Arda add the alignment display for signed integer
|
||||
* 2012-11-23 Bernard fix IAR compiler error.
|
||||
* 2012-12-22 Bernard fix rt_kprintf issue, which found by Grissiom.
|
||||
* 2013-06-24 Bernard remove rt_kprintf if RT_USING_CONSOLE is not defined.
|
||||
* 2013-09-24 aozima make sure the device is in STREAM mode when used by rt_kprintf.
|
||||
* 2015-07-06 Bernard Add rt_assert_handler routine.
|
||||
* 2021-02-28 Meco Man add RT_KSERVICE_USING_STDLIB
|
||||
*/
|
||||
|
||||
#include "string.h"
|
||||
#include "stdint.h"
|
||||
#include "stdarg.h"
|
||||
|
||||
/* use precision */
|
||||
#define RT_PRINTF_PRECISION
|
||||
|
||||
/* private function */
|
||||
#define _ISDIGIT(c) ((unsigned)((c) - '0') < 10)
|
||||
|
||||
#ifdef RT_PRINTF_LONGLONG
|
||||
/**
|
||||
* This function will duplicate a string.
|
||||
*
|
||||
* @param n is the string to be duplicated.
|
||||
*
|
||||
* @param base is support divide instructions value.
|
||||
*
|
||||
* @return the duplicated string pointer.
|
||||
*/
|
||||
static inline int divide(long long *n, int base)
|
||||
{
|
||||
int res;
|
||||
|
||||
/* optimized for processor which does not support divide instructions. */
|
||||
if (base == 10) {
|
||||
res = (int)(((unsigned long long)*n) % 10U);
|
||||
*n = (long long)(((unsigned long long)*n) / 10U);
|
||||
} else {
|
||||
res = (int)(((unsigned long long)*n) % 16U);
|
||||
*n = (long long)(((unsigned long long)*n) / 16U);
|
||||
}
|
||||
|
||||
return res;
|
||||
}
|
||||
#else
|
||||
static inline int divide(long *n, int base)
|
||||
{
|
||||
int res;
|
||||
|
||||
/* optimized for processor which does not support divide instructions. */
|
||||
if (base == 10) {
|
||||
res = (int)(((unsigned long)*n) % 10U);
|
||||
*n = (long)(((unsigned long)*n) / 10U);
|
||||
} else {
|
||||
res = (int)(((unsigned long)*n) % 16U);
|
||||
*n = (long)(((unsigned long)*n) / 16U);
|
||||
}
|
||||
|
||||
return res;
|
||||
}
|
||||
#endif /* RT_PRINTF_LONGLONG */
|
||||
|
||||
static inline int skip_atoi(const char **s)
|
||||
{
|
||||
register int i = 0;
|
||||
while (_ISDIGIT(**s))
|
||||
i = i * 10 + *((*s)++) - '0';
|
||||
|
||||
return i;
|
||||
}
|
||||
|
||||
#define ZEROPAD (1 << 0) /* pad with zero */
|
||||
#define SIGN (1 << 1) /* unsigned/signed long */
|
||||
#define PLUS (1 << 2) /* show plus */
|
||||
#define SPACE (1 << 3) /* space if plus */
|
||||
#define LEFT (1 << 4) /* left justified */
|
||||
#define SPECIAL (1 << 5) /* 0x */
|
||||
#define LARGE (1 << 6) /* use 'ABCDEF' instead of 'abcdef' */
|
||||
|
||||
#ifdef RT_PRINTF_PRECISION
|
||||
static char *print_number(char *buf,
|
||||
char *end,
|
||||
#ifdef RT_PRINTF_LONGLONG
|
||||
long long num,
|
||||
#else
|
||||
long num,
|
||||
#endif /* RT_PRINTF_LONGLONG */
|
||||
int base,
|
||||
int s,
|
||||
int precision,
|
||||
int type)
|
||||
#else
|
||||
static char *print_number(char *buf,
|
||||
char *end,
|
||||
#ifdef RT_PRINTF_LONGLONG
|
||||
long long num,
|
||||
#else
|
||||
long num,
|
||||
#endif /* RT_PRINTF_LONGLONG */
|
||||
int base,
|
||||
int s,
|
||||
int type)
|
||||
#endif /* RT_PRINTF_PRECISION */
|
||||
{
|
||||
char c, sign;
|
||||
#ifdef RT_PRINTF_LONGLONG
|
||||
char tmp[32];
|
||||
#else
|
||||
char tmp[16];
|
||||
#endif /* RT_PRINTF_LONGLONG */
|
||||
int precision_bak = precision;
|
||||
const char *digits;
|
||||
static const char small_digits[] = "0123456789abcdef";
|
||||
static const char large_digits[] = "0123456789ABCDEF";
|
||||
register int i;
|
||||
register int size;
|
||||
|
||||
size = s;
|
||||
|
||||
digits = (type & LARGE) ? large_digits : small_digits;
|
||||
if (type & LEFT)
|
||||
type &= ~ZEROPAD;
|
||||
|
||||
c = (type & ZEROPAD) ? '0' : ' ';
|
||||
|
||||
/* get sign */
|
||||
sign = 0;
|
||||
if (type & SIGN) {
|
||||
if (num < 0) {
|
||||
sign = '-';
|
||||
num = -num;
|
||||
} else if (type & PLUS)
|
||||
sign = '+';
|
||||
else if (type & SPACE)
|
||||
sign = ' ';
|
||||
}
|
||||
|
||||
#ifdef RT_PRINTF_SPECIAL
|
||||
if (type & SPECIAL) {
|
||||
if (base == 16)
|
||||
size -= 2;
|
||||
else if (base == 8)
|
||||
size--;
|
||||
}
|
||||
#endif /* RT_PRINTF_SPECIAL */
|
||||
|
||||
i = 0;
|
||||
if (num == 0)
|
||||
tmp[i++] = '0';
|
||||
else {
|
||||
while (num != 0)
|
||||
tmp[i++] = digits[divide(&num, base)];
|
||||
}
|
||||
|
||||
#ifdef RT_PRINTF_PRECISION
|
||||
if (i > precision)
|
||||
precision = i;
|
||||
size -= precision;
|
||||
#else
|
||||
size -= i;
|
||||
#endif /* RT_PRINTF_PRECISION */
|
||||
|
||||
if (!(type & (ZEROPAD | LEFT))) {
|
||||
if ((sign) && (size > 0))
|
||||
size--;
|
||||
|
||||
while (size-- > 0) {
|
||||
if (buf < end)
|
||||
*buf = ' ';
|
||||
++buf;
|
||||
}
|
||||
}
|
||||
|
||||
if (sign) {
|
||||
if (buf < end) {
|
||||
*buf = sign;
|
||||
}
|
||||
--size;
|
||||
++buf;
|
||||
}
|
||||
|
||||
#ifdef RT_PRINTF_SPECIAL
|
||||
if (type & SPECIAL) {
|
||||
if (base == 8) {
|
||||
if (buf < end)
|
||||
*buf = '0';
|
||||
++buf;
|
||||
} else if (base == 16) {
|
||||
if (buf < end)
|
||||
*buf = '0';
|
||||
++buf;
|
||||
if (buf < end) {
|
||||
*buf = type & LARGE ? 'X' : 'x';
|
||||
}
|
||||
++buf;
|
||||
}
|
||||
}
|
||||
#endif /* RT_PRINTF_SPECIAL */
|
||||
|
||||
/* no align to the left */
|
||||
if (!(type & LEFT)) {
|
||||
while (size-- > 0) {
|
||||
if (buf < end)
|
||||
*buf = c;
|
||||
++buf;
|
||||
}
|
||||
}
|
||||
|
||||
#ifdef RT_PRINTF_PRECISION
|
||||
while (i < precision--) {
|
||||
if (buf < end)
|
||||
*buf = '0';
|
||||
++buf;
|
||||
}
|
||||
#endif /* RT_PRINTF_PRECISION */
|
||||
|
||||
/* put number in the temporary buffer */
|
||||
while (i-- > 0 && (precision_bak != 0)) {
|
||||
if (buf < end)
|
||||
*buf = tmp[i];
|
||||
++buf;
|
||||
}
|
||||
|
||||
while (size-- > 0) {
|
||||
if (buf < end)
|
||||
*buf = ' ';
|
||||
++buf;
|
||||
}
|
||||
|
||||
return buf;
|
||||
}
|
||||
|
||||
int vsnprintf (char *, size_t, const char *, va_list) __attribute__ ((alias ("rt_vsnprintf")));
|
||||
|
||||
/**
|
||||
* This function will fill a formatted string to buffer.
|
||||
*
|
||||
* @param buf is the buffer to save formatted string.
|
||||
*
|
||||
* @param size is the size of buffer.
|
||||
*
|
||||
* @param fmt is the format parameters.
|
||||
*
|
||||
* @param args is a list of variable parameters.
|
||||
*
|
||||
* @return The number of characters actually written to buffer.
|
||||
*/
|
||||
int32_t rt_vsnprintf(char *buf,
|
||||
size_t size,
|
||||
const char *fmt,
|
||||
va_list args)
|
||||
{
|
||||
#ifdef RT_PRINTF_LONGLONG
|
||||
unsigned long long num;
|
||||
#else
|
||||
uint32_t num;
|
||||
#endif /* RT_PRINTF_LONGLONG */
|
||||
int i, len;
|
||||
char *str, *end, c;
|
||||
const char *s;
|
||||
|
||||
uint8_t base; /* the base of number */
|
||||
uint8_t flags; /* flags to print number */
|
||||
uint8_t qualifier; /* 'h', 'l', or 'L' for integer fields */
|
||||
int32_t field_width; /* width of output field */
|
||||
|
||||
#ifdef RT_PRINTF_PRECISION
|
||||
int precision; /* min. # of digits for integers and max for a string */
|
||||
#endif /* RT_PRINTF_PRECISION */
|
||||
|
||||
str = buf;
|
||||
end = buf + size;
|
||||
|
||||
/* Make sure end is always >= buf */
|
||||
if (end < buf) {
|
||||
end = ((char *)-1);
|
||||
size = end - buf;
|
||||
}
|
||||
|
||||
for (; *fmt; ++fmt) {
|
||||
if (*fmt != '%') {
|
||||
if (str < end)
|
||||
*str = *fmt;
|
||||
++str;
|
||||
continue;
|
||||
}
|
||||
|
||||
/* process flags */
|
||||
flags = 0;
|
||||
|
||||
while (1) {
|
||||
/* skips the first '%' also */
|
||||
++fmt;
|
||||
if (*fmt == '-')
|
||||
flags |= LEFT;
|
||||
else if (*fmt == '+')
|
||||
flags |= PLUS;
|
||||
else if (*fmt == ' ')
|
||||
flags |= SPACE;
|
||||
else if (*fmt == '#')
|
||||
flags |= SPECIAL;
|
||||
else if (*fmt == '0')
|
||||
flags |= ZEROPAD;
|
||||
else
|
||||
break;
|
||||
}
|
||||
|
||||
/* get field width */
|
||||
field_width = -1;
|
||||
if (_ISDIGIT(*fmt))
|
||||
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;
|
||||
}
|
||||
}
|
||||
|
||||
#ifdef RT_PRINTF_PRECISION
|
||||
/* get the precision */
|
||||
precision = -1;
|
||||
if (*fmt == '.') {
|
||||
++fmt;
|
||||
if (_ISDIGIT(*fmt))
|
||||
precision = skip_atoi(&fmt);
|
||||
else if (*fmt == '*') {
|
||||
++fmt;
|
||||
/* it's the next argument */
|
||||
precision = va_arg(args, int);
|
||||
}
|
||||
if (precision < 0)
|
||||
precision = 0;
|
||||
}
|
||||
#endif /* RT_PRINTF_PRECISION */
|
||||
/* get the conversion qualifier */
|
||||
qualifier = 0;
|
||||
#ifdef RT_PRINTF_LONGLONG
|
||||
if (*fmt == 'h' || *fmt == 'l' || *fmt == 'L')
|
||||
#else
|
||||
if (*fmt == 'h' || *fmt == 'l')
|
||||
#endif /* RT_PRINTF_LONGLONG */
|
||||
{
|
||||
qualifier = *fmt;
|
||||
++fmt;
|
||||
#ifdef RT_PRINTF_LONGLONG
|
||||
if (qualifier == 'l' && *fmt == 'l') {
|
||||
qualifier = 'L';
|
||||
++fmt;
|
||||
}
|
||||
#endif /* RT_PRINTF_LONGLONG */
|
||||
}
|
||||
|
||||
/* the default base */
|
||||
base = 10;
|
||||
|
||||
switch (*fmt) {
|
||||
case 'c':
|
||||
if (!(flags & LEFT)) {
|
||||
while (--field_width > 0) {
|
||||
if (str < end)
|
||||
*str = ' ';
|
||||
++str;
|
||||
}
|
||||
}
|
||||
|
||||
/* get character */
|
||||
c = (uint8_t)va_arg(args, int);
|
||||
if (str < end)
|
||||
*str = c;
|
||||
++str;
|
||||
|
||||
/* put width */
|
||||
while (--field_width > 0) {
|
||||
if (str < end)
|
||||
*str = ' ';
|
||||
++str;
|
||||
}
|
||||
continue;
|
||||
|
||||
case 's':
|
||||
s = va_arg(args, char *);
|
||||
if (!s)
|
||||
s = "(NULL)";
|
||||
|
||||
for (len = 0; (len != field_width) && (s[len] != '\0'); len++)
|
||||
;
|
||||
#ifdef RT_PRINTF_PRECISION
|
||||
if (precision > 0 && len > precision)
|
||||
len = precision;
|
||||
#endif /* RT_PRINTF_PRECISION */
|
||||
|
||||
if (!(flags & LEFT)) {
|
||||
while (len < field_width--) {
|
||||
if (str < end)
|
||||
*str = ' ';
|
||||
++str;
|
||||
}
|
||||
}
|
||||
|
||||
for (i = 0; i < len; ++i) {
|
||||
if (str < end)
|
||||
*str = *s;
|
||||
++str;
|
||||
++s;
|
||||
}
|
||||
|
||||
while (len < field_width--) {
|
||||
if (str < end)
|
||||
*str = ' ';
|
||||
++str;
|
||||
}
|
||||
continue;
|
||||
|
||||
case 'p':
|
||||
if (field_width == -1) {
|
||||
field_width = sizeof(void *) << 1;
|
||||
flags |= ZEROPAD;
|
||||
}
|
||||
#ifdef RT_PRINTF_PRECISION
|
||||
str = print_number(str, end,
|
||||
(long)va_arg(args, void *),
|
||||
16, field_width, precision, flags);
|
||||
#else
|
||||
str = print_number(str, end,
|
||||
(long)va_arg(args, void *),
|
||||
16, field_width, flags);
|
||||
#endif /* RT_PRINTF_PRECISION */
|
||||
continue;
|
||||
|
||||
case '%':
|
||||
if (str < end)
|
||||
*str = '%';
|
||||
++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:
|
||||
if (str < end)
|
||||
*str = '%';
|
||||
++str;
|
||||
|
||||
if (*fmt) {
|
||||
if (str < end)
|
||||
*str = *fmt;
|
||||
++str;
|
||||
} else {
|
||||
--fmt;
|
||||
}
|
||||
continue;
|
||||
}
|
||||
|
||||
#ifdef RT_PRINTF_LONGLONG
|
||||
if (qualifier == 'L')
|
||||
num = va_arg(args, long long);
|
||||
else if (qualifier == 'l')
|
||||
#else
|
||||
if (qualifier == 'l')
|
||||
#endif /* RT_PRINTF_LONGLONG */
|
||||
{
|
||||
num = va_arg(args, uint32_t);
|
||||
if (flags & SIGN)
|
||||
num = (int32_t)num;
|
||||
} else if (qualifier == 'h') {
|
||||
num = (uint16_t)va_arg(args, int32_t);
|
||||
if (flags & SIGN)
|
||||
num = (int16_t)num;
|
||||
} else {
|
||||
num = va_arg(args, uint32_t);
|
||||
if (flags & SIGN)
|
||||
num = (int32_t)num;
|
||||
}
|
||||
#ifdef RT_PRINTF_PRECISION
|
||||
str = print_number(str, end, num, base, field_width, precision, flags);
|
||||
#else
|
||||
str = print_number(str, end, num, base, field_width, flags);
|
||||
#endif /* RT_PRINTF_PRECISION */
|
||||
}
|
||||
|
||||
if (size > 0) {
|
||||
if (str < end)
|
||||
*str = '\0';
|
||||
else {
|
||||
end[-1] = '\0';
|
||||
}
|
||||
}
|
||||
|
||||
/* the trailing null byte doesn't count towards the total
|
||||
* ++str;
|
||||
*/
|
||||
return str - buf;
|
||||
}
|
||||
|
Loading…
Add table
Reference in a new issue