move to components directory

git-svn-id: https://rt-thread.googlecode.com/svn/trunk@636 bbd45198-f89e-11dd-88c7-29a3b14d5316

16 files changed, 1136 insertions, 0 deletions

diff --git a/components/libc/minilibc/SConscript b/components/libc/minilibc/SConscript
new file mode 100644
index 0000000000..729d2fea00
--- /dev/null
+++ b/components/libc/minilibc/SConscript
@@ -0,0 +1,10 @@
+Import('env')

+Import('RTT_ROOT')

+

+# The set of source files associated with this SConscript file.

+src_local = Glob('*.c')

+

+env.Append(CPPPATH = RTT_ROOT + '/libc/minilibc')

+

+obj = env.Object(src_local)

+Return('obj')

diff --git a/components/libc/minilibc/ctype.c b/components/libc/minilibc/ctype.c
new file mode 100644
index 0000000000..8e02e1a904
--- /dev/null
+++ b/components/libc/minilibc/ctype.c
@@ -0,0 +1,32 @@
+/*

+ * File      : ctype.c

+ * This file is part of RT-Thread RTOS

+ * COPYRIGHT (C) 2008, RT-Thread Development Team

+ *

+ * The license and distribution terms for this file may be

+ * found in the file LICENSE in this distribution or at

+ * http://www.rt-thread.org/license/LICENSE

+ *

+ * Change Logs:

+ * Date           Author       Notes

+ * 2008-08-14     Bernard      the first version

+ */

+

+#include <rtthread.h>

+#include <sys/types.h>

+

+#if !defined (RT_USING_NEWLIB) && defined (RT_USING_MINILIBC)

+#include "ctype.h"

+

+int isprint (int ch)

+{

+	ch&=0x7f;

+	return (ch>=32 && ch<127);

+}

+

+int isalpha(int ch)

+{

+	return (unsigned int)((ch | 0x20) - 'a') < 26u;

+}

+

+#endif

diff --git a/components/libc/minilibc/ctype.h b/components/libc/minilibc/ctype.h
new file mode 100644
index 0000000000..fdbf7bf003
--- /dev/null
+++ b/components/libc/minilibc/ctype.h
@@ -0,0 +1,20 @@
+/*

+ * File      : ctype.h

+ * This file is part of RT-Thread RTOS

+ * COPYRIGHT (C) 2008, RT-Thread Development Team

+ *

+ * The license and distribution terms for this file may be

+ * found in the file LICENSE in this distribution or at

+ * http://www.rt-thread.org/license/LICENSE

+ *

+ * Change Logs:

+ * Date           Author       Notes

+ * 2008-08-14     Bernard      the first version

+ */

+#ifndef __CTYPE_H__

+#define __CTYPE_H__

+

+int isprint(int c) __attribute__ ((__const__));

+int isalpha (int c) __attribute__ ((__const__));

+

+#endif

diff --git a/components/libc/minilibc/math.c b/components/libc/minilibc/math.c
new file mode 100644
index 0000000000..d86abe5877
--- /dev/null
+++ b/components/libc/minilibc/math.c
@@ -0,0 +1,12 @@
+#include <math.h>

+

+/* Fix me */

+double sin(double x) 

+{

+	#warning sin function not supported for this platform

+}

+

+double cos(double x) 

+{

+	#warning cos function not supported for this platform

+}

diff --git a/components/libc/minilibc/math.h b/components/libc/minilibc/math.h
new file mode 100644
index 0000000000..ac480d534a
--- /dev/null
+++ b/components/libc/minilibc/math.h
@@ -0,0 +1,4 @@
+#ifndef __STDIO_H__

+#define __STDIO_H__

+

+#endif

diff --git a/components/libc/minilibc/stddef.h b/components/libc/minilibc/stddef.h
new file mode 100644
index 0000000000..b260acf79e
--- /dev/null
+++ b/components/libc/minilibc/stddef.h
@@ -0,0 +1,4 @@
+#ifndef __STDDEF_H__

+#define __STDDEF_H__

+

+#endif

diff --git a/components/libc/minilibc/stdint.h b/components/libc/minilibc/stdint.h
new file mode 100644
index 0000000000..ce9c500867
--- /dev/null
+++ b/components/libc/minilibc/stdint.h
@@ -0,0 +1,33 @@
+#ifndef __STDINT_H__

+#define __STDINT_H__

+

+#include <rtthread.h>

+

+typedef	rt_int8_t		int8_t;

+typedef	rt_uint8_t		uint8_t;

+typedef	rt_int16_t		int16_t;

+typedef	rt_uint16_t		uint16_t;

+typedef	rt_int32_t		int32_t;

+typedef	rt_uint32_t		uint32_t;

+

+/*

+ * 7.18.2 Limits of specified-width integer types.

+ *

+ * The following object-like macros specify the minimum and maximum limits

+ * of integer types corresponding to the typedef names defined above.

+ */

+

+/* 7.18.2.1 Limits of exact-width integer types */

+#define	INT8_MIN		(-0x7f - 1)

+#define	INT16_MIN		(-0x7fff - 1)

+#define	INT32_MIN		(-0x7fffffff - 1)

+

+#define	INT8_MAX		0x7f

+#define	INT16_MAX		0x7fff

+#define	INT32_MAX		0x7fffffff

+

+#define	UINT8_MAX		0xff

+#define	UINT16_MAX		0xffff

+#define	UINT32_MAX		0xffffffffU

+

+#endif

diff --git a/components/libc/minilibc/stdio.h b/components/libc/minilibc/stdio.h
new file mode 100644
index 0000000000..cf115c499a
--- /dev/null
+++ b/components/libc/minilibc/stdio.h
@@ -0,0 +1,5 @@
+#ifndef __STDIO_H__

+#define __STDIO_H__

+

+#endif

+

diff --git a/components/libc/minilibc/stdlib.c b/components/libc/minilibc/stdlib.c
new file mode 100644
index 0000000000..7c14036351
--- /dev/null
+++ b/components/libc/minilibc/stdlib.c
@@ -0,0 +1,41 @@
+/*

+ * File      : stdlib.c

+ * This file is part of RT-Thread RTOS

+ * COPYRIGHT (C) 2008, RT-Thread Development Team

+ *

+ * The license and distribution terms for this file may be

+ * found in the file LICENSE in this distribution or at

+ * http://www.rt-thread.org/license/LICENSE

+ *

+ * Change Logs:

+ * Date           Author       Notes

+ * 2008-08-14     Bernard      the first version

+ */

+

+#include <rtthread.h>

+

+#if !defined (RT_USING_NEWLIB) && defined (RT_USING_MINILIBC)

+#include "stdlib.h"

+

+int errno = 0;

+int atoi(const char* s)

+{

+	long int v=0;

+	int sign=1;

+	while ( *s == ' '  ||  (unsigned int)(*s - 9) < 5u) s++;

+	switch (*s)

+	{

+	case '-':

+		sign=-1;

+	case '+':

+		++s;

+	}

+	while ((unsigned int) (*s - '0') < 10u)

+	{

+		v=v*10+*s-'0';

+		++s;

+	}

+	return sign==-1?-v:v;

+}

+

+#endif

diff --git a/components/libc/minilibc/stdlib.h b/components/libc/minilibc/stdlib.h
new file mode 100644
index 0000000000..89318b30d9
--- /dev/null
+++ b/components/libc/minilibc/stdlib.h
@@ -0,0 +1,27 @@
+/*

+ * File      : stdlib.h

+ * This file is part of RT-Thread RTOS

+ * COPYRIGHT (C) 2008, RT-Thread Development Team

+ *

+ * The license and distribution terms for this file may be

+ * found in the file LICENSE in this distribution or at

+ * http://www.rt-thread.org/license/LICENSE

+ *

+ * Change Logs:

+ * Date           Author       Notes

+ * 2008-08-14     Bernard      the first version

+ */

+

+#ifndef __STDLIB_H__

+#define __STDLIB_H__

+

+#if !defined (RT_USING_NEWLIB) && defined (RT_USING_MINILIBC)

+int atoi(const char *nptr);

+#endif

+

+#define malloc  rt_malloc

+#define free    rt_free

+#define realloc rt_realloc

+#define calloc  rt_calloc

+

+#endif

diff --git a/components/libc/minilibc/string.c b/components/libc/minilibc/string.c
new file mode 100644
index 0000000000..52726f2cbf
--- /dev/null
+++ b/components/libc/minilibc/string.c
@@ -0,0 +1,623 @@
+/*
+ * File      : string.c
+ * This file is part of RT-Thread RTOS
+ * COPYRIGHT (C) 2008, RT-Thread Development Team
+ *
+ * The license and distribution terms for this file may be
+ * found in the file LICENSE in this distribution or at
+ * http://www.rt-thread.org/license/LICENSE
+ *
+ * Change Logs:
+ * Date           Author       Notes
+ * 2008-08-14     Bernard      the first version
+ * 2010-02-15     Gary Lee     add strlcpy
+ * 2010-03-17     Bernard      add strlcpy implementation to this file.
+ *                             fix strlcpy declaration
+ * 2010-03-24     Bernard      add strchr and strtok implementation.
+ */
+
+#include <rtthread.h>
+
+#if !defined (RT_USING_NEWLIB) && defined (RT_USING_MINILIBC)
+#include "string.h"
+
+/* there is no strcpy and strcmp implementation in RT-Thread */
+char *strcpy(char *dest, const char *src)
+{
+	return (char *)rt_strncpy(dest, src, rt_strlen(src) + 1);
+}
+
+char *strncpy(char *dest, const char *src, size_t siz)
+{
+	return (char *)rt_strncpy(dest, src, siz);
+}
+
+size_t strlcpy(char *dst, const char *src, size_t siz)
+{
+	register char *d = dst;
+	register const char *s = src;
+	register size_t n = siz;
+
+	/* Copy as many bytes as will fit */
+	if (n != 0 && --n != 0)
+	{
+		do
+		{
+			if ((*d++ = *s++) == 0) break;
+		} while (--n != 0);
+	}
+
+	/* Not enough room in dst, add NUL and traverse rest of src */
+	if (n == 0)
+	{
+		if (siz != 0) *d = '\0';	/* NUL-terminate dst */
+		while (*s++) ;
+	}
+
+	return(s - src - 1);			/* count does not include NUL */
+}
+
+int strcmp (const char *s1, const char *s2)
+{
+	while (*s1 && *s1 == *s2)
+		s1++, s2++;
+	return (*s1 - *s2);
+}
+
+/**
+ * strncmp - Compare two length-limited strings
+ * @cs: One string
+ * @ct: Another string
+ * @count: The maximum number of bytes to compare
+ */
+int strncmp(const char *cs,const char *ct, size_t count)
+{
+	register signed char __res = 0;
+
+	while (count) {
+		if ((__res = *cs - *ct++) != 0 || !*cs++)
+			break;
+		count--;
+	}
+
+	return __res;
+}
+
+char *strcat(char * dest, const char * src)
+{
+	char *tmp = dest;
+
+	while (*dest)
+		dest++;
+	while ((*dest++ = *src++) != '\0')
+		;
+
+	return tmp;
+}
+
+char *strncat(char *dest, const char *src, size_t count)
+{
+	char *tmp = dest;
+
+	if (count) {
+		while (*dest)
+			dest++;
+		while ((*dest++ = *src++)) {
+			if (--count == 0) {
+				*dest = '\0';
+				break;
+			}
+		}
+	}
+
+	return tmp;
+}
+
+char *strrchr(const char *t, int c) 
+{
+	register char ch;
+	register const char *l=0;
+
+	ch = c;
+	for (;;) 
+	{
+		if (*t == ch) l=t; 
+		if (!*t) return (char*)l; 
+		++t;
+	}
+	
+	return (char*)l;
+}
+
+
+int  strncasecmp ( const char* s1, const char* s2, size_t len )
+{
+	register unsigned int  x2;
+	register unsigned int  x1;
+	register const char*   end = s1 + len;
+
+	while (1)
+	{
+		if ((s1 >= end) )
+			return 0;
+
+		x2 = *s2 - 'A'; if ((x2 < 26u)) x2 += 32;
+		x1 = *s1 - 'A'; if ((x1 < 26u)) x1 += 32;
+		s1++; s2++;
+
+		if ((x2 != x1))
+			break;
+
+		if ((x1 == (unsigned int)-'A'))
+			break;
+	}
+
+	return x1 - x2;
+}
+
+/* private function */
+#define isdigit(c)  ((unsigned)((c) - '0') < 10)
+
+rt_inline int divide(int *n, int base)
+{
+	rt_int32_t res;
+
+	/* optimized for processor which does not support divide instructions. */
+	if (base == 10)
+	{
+		res = ((int)*n) % 10U;
+		*n = ((int)*n) / 10U;
+	}
+	else
+	{
+		res = ((int)*n) % 16U;
+		*n = ((int)*n) / 16U;
+	}
+
+	return res;
+}
+
+rt_inline int skip_atoi(const char **s)
+{
+	register int i=0;
+	while (isdigit(**s)) i = i*10 + *((*s)++) - '0';
+
+	return i;
+}
+
+unsigned char _ctype[] = {
+_C,_C,_C,_C,_C,_C,_C,_C,			/* 0-7 */
+_C,_C|_S,_C|_S,_C|_S,_C|_S,_C|_S,_C,_C,		/* 8-15 */
+_C,_C,_C,_C,_C,_C,_C,_C,			/* 16-23 */
+_C,_C,_C,_C,_C,_C,_C,_C,			/* 24-31 */
+_S|_SP,_P,_P,_P,_P,_P,_P,_P,			/* 32-39 */
+_P,_P,_P,_P,_P,_P,_P,_P,			/* 40-47 */
+_D,_D,_D,_D,_D,_D,_D,_D,			/* 48-55 */
+_D,_D,_P,_P,_P,_P,_P,_P,			/* 56-63 */
+_P,_U|_X,_U|_X,_U|_X,_U|_X,_U|_X,_U|_X,_U,	/* 64-71 */
+_U,_U,_U,_U,_U,_U,_U,_U,			/* 72-79 */
+_U,_U,_U,_U,_U,_U,_U,_U,			/* 80-87 */
+_U,_U,_U,_P,_P,_P,_P,_P,			/* 88-95 */
+_P,_L|_X,_L|_X,_L|_X,_L|_X,_L|_X,_L|_X,_L,	/* 96-103 */
+_L,_L,_L,_L,_L,_L,_L,_L,			/* 104-111 */
+_L,_L,_L,_L,_L,_L,_L,_L,			/* 112-119 */
+_L,_L,_L,_P,_P,_P,_P,_C,			/* 120-127 */
+0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,		/* 128-143 */
+0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,		/* 144-159 */
+_S|_SP,_P,_P,_P,_P,_P,_P,_P,_P,_P,_P,_P,_P,_P,_P,_P,   /* 160-175 */
+_P,_P,_P,_P,_P,_P,_P,_P,_P,_P,_P,_P,_P,_P,_P,_P,       /* 176-191 */
+_U,_U,_U,_U,_U,_U,_U,_U,_U,_U,_U,_U,_U,_U,_U,_U,       /* 192-207 */
+_U,_U,_U,_U,_U,_U,_U,_P,_U,_U,_U,_U,_U,_U,_U,_L,       /* 208-223 */
+_L,_L,_L,_L,_L,_L,_L,_L,_L,_L,_L,_L,_L,_L,_L,_L,       /* 224-239 */
+_L,_L,_L,_L,_L,_L,_L,_P,_L,_L,_L,_L,_L,_L,_L,_L};      /* 240-255 */
+
+#define __ismask(x) (_ctype[(int)(unsigned char)(x)])
+
+#define isalnum(c)	((__ismask(c)&(_U|_L|_D)) != 0)
+#define isalpha(c)	((__ismask(c)&(_U|_L)) != 0)
+#define iscntrl(c)	((__ismask(c)&(_C)) != 0)
+#define isgraph(c)	((__ismask(c)&(_P|_U|_L|_D)) != 0)
+#define islower(c)	((__ismask(c)&(_L)) != 0)
+#define isprint(c)	((__ismask(c)&(_P|_U|_L|_D|_SP)) != 0)
+#define ispunct(c)	((__ismask(c)&(_P)) != 0)
+#define isspace(c)	((__ismask(c)&(_S)) != 0)
+#define isupper(c)	((__ismask(c)&(_U)) != 0)
+#define isxdigit(c)	((__ismask(c)&(_D|_X)) != 0)
+
+#define isascii(c) (((unsigned char)(c))<=0x7f)
+#define toascii(c) (((unsigned char)(c))&0x7f)
+
+static inline unsigned char __tolower(unsigned char c)
+{
+	if (isupper(c))
+		c -= 'A'-'a';
+	return c;
+}
+
+static inline unsigned char __toupper(unsigned char c)
+{
+	if (islower(c))
+		c -= 'a'-'A';
+	return c;
+}
+
+int tolower(int c) 
+{
+	return __tolower(c);
+}
+
+int toupper(int c)
+{
+	return __toupper(c);
+}
+
+/**
+ * simple_strtoul - convert a string to an unsigned long
+ * @cp: The start of the string
+ * @endp: A pointer to the end of the parsed string will be placed here
+ * @base: The number base to use
+ */
+unsigned long simple_strtoul(const char *cp,char **endp,unsigned int base)
+{
+	unsigned long result = 0,value;
+
+	if (!base) {
+		base = 10;
+		if (*cp == '0') {
+			base = 8;
+			cp++;
+			if ((toupper(*cp) == 'X') && isxdigit(cp[1])) {
+				cp++;
+				base = 16;
+			}
+		}
+	} else if (base == 16) {
+		if (cp[0] == '0' && toupper(cp[1]) == 'X')
+			cp += 2;
+	}
+	while (isxdigit(*cp) &&
+	       (value = isdigit(*cp) ? *cp-'0' : toupper(*cp)-'A'+10) < base) {
+		result = result*base + value;
+		cp++;
+	}
+	if (endp)
+		*endp = (char *)cp;
+	return result;
+}
+
+/**
+ * simple_strtol - convert a string to a signed long
+ * @cp: The start of the string
+ * @endp: A pointer to the end of the parsed string will be placed here
+ * @base: The number base to use
+ */
+long simple_strtol(const char *cp,char **endp,unsigned int base)
+{
+	if(*cp=='-')
+		return -simple_strtoul(cp+1,endp,base);
+	return simple_strtoul(cp,endp,base);
+}
+
+/**
+ * simple_strtoull - convert a string to an unsigned long long
+ * @cp: The start of the string
+ * @endp: A pointer to the end of the parsed string will be placed here
+ * @base: The number base to use
+ */
+unsigned long long simple_strtoull(const char *cp,char **endp,unsigned int base)
+{
+	unsigned long long result = 0, value;
+
+	if (*cp == '0') {
+		cp++;
+		if ((toupper(*cp) == 'X') && isxdigit (cp[1])) {
+			base = 16;
+			cp++;
+		}
+		if (!base) {
+			base = 8;
+		}
+	}
+	if (!base) {
+		base = 10;
+	}
+	while (isxdigit (*cp) && (value = isdigit (*cp)
+				? *cp - '0'
+				: (islower (*cp) ? toupper (*cp) : *cp) - 'A' + 10) < base) {
+		result = result * base + value;
+		cp++;
+	}
+	if (endp)
+		*endp = (char *) cp;
+	return result;
+}
+
+/**
+ * simple_strtoll - convert a string to a signed long long
+ * @cp: The start of the string
+ * @endp: A pointer to the end of the parsed string will be placed here
+ * @base: The number base to use
+ */
+long long simple_strtoll(const char *cp,char **endp,unsigned int base)
+{
+	if(*cp=='-')
+		return -simple_strtoull(cp+1,endp,base);
+	return simple_strtoull(cp,endp,base);
+}
+
+/**
+ * vsscanf - Unformat a buffer into a list of arguments
+ * @buf:	input buffer
+ * @fmt:	format of buffer
+ * @args:	arguments
+ */
+int vsscanf(const char * buf, const char * fmt, va_list args)
+{
+	const char *str = buf;
+	char *next;
+	int num = 0;
+	int qualifier;
+	int base;
+	int field_width = -1;
+	int is_sign = 0;
+
+	while(*fmt && *str) {
+		/* skip any white space in format */
+		/* white space in format matchs any amount of
+		 * white space, including none, in the input.
+		 */
+		if (isspace(*fmt)) {
+			while (isspace(*fmt))
+				++fmt;
+			while (isspace(*str))
+				++str;
+		}
+
+		/* anything that is not a conversion must match exactly */
+		if (*fmt != '%' && *fmt) {
+			if (*fmt++ != *str++)
+				break;
+			continue;
+		}
+
+		if (!*fmt)
+			break;
+		++fmt;
+		
+		/* skip this conversion.
+		 * advance both strings to next white space
+		 */
+		if (*fmt == '*') {
+			while (!isspace(*fmt) && *fmt)
+				fmt++;
+			while (!isspace(*str) && *str)
+				str++;
+			continue;
+		}
+
+		/* get field width */
+		if (isdigit(*fmt))
+			field_width = skip_atoi(&fmt);
+
+		/* get conversion qualifier */
+		qualifier = -1;
+		if (*fmt == 'h' || *fmt == 'l' || *fmt == 'L' || *fmt == 'Z') {
+			qualifier = *fmt;
+			fmt++;
+		}
+		base = 10;
+		is_sign = 0;
+
+		if (!*fmt || !*str)
+			break;
+
+		switch(*fmt++) {
+		case 'c':
+		{
+			char *s = (char *) va_arg(args,char*);
+			if (field_width == -1)
+				field_width = 1;
+			do {
+				*s++ = *str++;
+			} while(field_width-- > 0 && *str);
+			num++;
+		}
+		continue;
+		case 's':
+		{
+			char *s = (char *) va_arg(args, char *);
+			if(field_width == -1)
+				field_width = INT_MAX;
+			/* first, skip leading white space in buffer */
+			while (isspace(*str))
+				str++;
+
+			/* now copy until next white space */
+			while (*str && !isspace(*str) && field_width--) {
+				*s++ = *str++;
+			}
+			*s = '\0';
+			num++;
+		}
+		continue;
+		case 'n':
+			/* return number of characters read so far */
+		{
+			int *i = (int *)va_arg(args,int*);
+			*i = str - buf;
+		}
+		continue;
+		case 'o':
+			base = 8;
+			break;
+		case 'x':
+		case 'X':
+			base = 16;
+			break;
+		case 'd':
+		case 'i':
+			is_sign = 1;
+		case 'u':
+			break;
+		case '%':
+			/* looking for '%' in str */
+			if (*str++ != '%') 
+				return num;
+			continue;
+		default:
+			/* invalid format; stop here */
+			return num;
+		}
+
+		/* have some sort of integer conversion.
+		 * first, skip white space in buffer.
+		 */
+		while (isspace(*str))
+			str++;
+
+		if (!*str || !isdigit(*str))
+			break;
+
+		switch(qualifier) {
+		case 'h':
+			if (is_sign) {
+				short *s = (short *) va_arg(args,short *);
+				*s = (short) simple_strtol(str,&next,base);
+			} else {
+				unsigned short *s = (unsigned short *) va_arg(args, unsigned short *);
+				*s = (unsigned short) simple_strtoul(str, &next, base);
+			}
+			break;
+		case 'l':
+			if (is_sign) {
+				long *l = (long *) va_arg(args,long *);
+				*l = simple_strtol(str,&next,base);
+			} else {
+				unsigned long *l = (unsigned long*) va_arg(args,unsigned long*);
+				*l = simple_strtoul(str,&next,base);
+			}
+			break;
+		case 'L':
+			if (is_sign) {
+				long long *l = (long long*) va_arg(args,long long *);
+				*l = simple_strtoll(str,&next,base);
+			} else {
+				unsigned long long *l = (unsigned long long*) va_arg(args,unsigned long long*);
+				*l = simple_strtoull(str,&next,base);
+			}
+			break;
+		case 'Z':
+		{
+			unsigned long *s = (unsigned long*) va_arg(args,unsigned long*);
+			*s = (unsigned long) simple_strtoul(str,&next,base);
+		}
+		break;
+		default:
+			if (is_sign) {
+				int *i = (int *) va_arg(args, int*);
+				*i = (int) simple_strtol(str,&next,base);
+			} else {
+				unsigned int *i = (unsigned int*) va_arg(args, unsigned int*);
+				*i = (unsigned int) simple_strtoul(str,&next,base);
+			}
+			break;
+		}
+		num++;
+
+		if (!next)
+			break;
+		str = next;
+	}
+	return num;
+}
+
+/**
+ * sscanf - Unformat a buffer into a list of arguments
+ * @buf:	input buffer
+ * @fmt:	formatting of buffer
+ * @...:	resulting arguments
+ */
+int sscanf(const char * buf, const char * fmt, ...)
+{
+	va_list args;
+	int i;
+
+	va_start(args,fmt);
+	i = vsscanf(buf,fmt,args);
+	va_end(args);
+	
+	return i;
+}
+
+size_t strspn(const char *s, const char *accept)
+{
+	size_t l=0;
+	int a=1,i, al=strlen(accept);
+
+	while((a)&&(*s))
+	{
+		for(a=i=0;(!a)&&(i<al);i++)
+			if (*s==accept[i]) a=1;
+		if (a) l++;
+		s++;
+	}
+	return l;
+}
+
+size_t strcspn(const char *s, const char *reject)
+{
+	size_t l=0;
+	int a=1,i,al=strlen(reject);
+
+	while((a)&&(*s))
+	{
+		for(i=0;(a)&&(i<al);i++)
+			if (*s==reject[i]) a=0;
+		if (a) l++;
+		s++;
+	}
+	return l;
+}
+
+char*strtok_r(char*s,const char*delim,char**ptrptr)
+{
+	char*tmp=0;
+
+	if (s==0) s=*ptrptr;
+	s += strspn(s,delim);	/* overread leading delimiter */
+	if (*s)
+	{
+		tmp=s;
+		s+=strcspn(s,delim);
+
+		if (*s) *s++=0;		/* not the end ? => terminate it */
+	}
+	*ptrptr=s;
+	return tmp;
+}
+
+char *strtok(char *s, const char *delim)
+{
+	static char *strtok_pos;
+	return strtok_r(s,delim,&strtok_pos);
+}
+
+char *strchr(const char *s1, int i)
+{
+	const unsigned char *s = (const unsigned char *)s1;
+	unsigned char c = (unsigned int)i;
+
+	while (*s && *s != c)
+	{
+		s++;
+	}
+
+	if (*s != c)
+	{
+		s = NULL;
+	}
+
+	return (char *) s;
+}
+
+#endif
diff --git a/components/libc/minilibc/string.h b/components/libc/minilibc/string.h
new file mode 100644
index 0000000000..f9cc9a6591
--- /dev/null
+++ b/components/libc/minilibc/string.h
@@ -0,0 +1,78 @@
+/*
+ * File      : string.h
+ * This file is part of RT-Thread RTOS
+ * COPYRIGHT (C) 2008, RT-Thread Development Team
+ *
+ * The license and distribution terms for this file may be
+ * found in the file LICENSE in this distribution or at
+ * http://www.rt-thread.org/license/LICENSE
+ *
+ * Change Logs:
+ * Date           Author       Notes
+ * 2008-08-14     Bernard      the first version
+ */
+#ifndef __STRING_H__
+#define __STRING_H__
+
+#include <rtthread.h>
+#include <sys/types.h>
+
+/* replace for standard string library */
+#if !defined (RT_USING_NEWLIB) && defined (RT_USING_MINILIBC)
+
+#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' */
+
+#define INT_MAX		((int)(~0U>>1))
+#define INT_MIN		(-INT_MAX - 1)
+#define UINT_MAX	(~0U)
+#define LONG_MAX	((long)(~0UL>>1))
+#define LONG_MIN	(-LONG_MAX - 1)
+#define ULONG_MAX	(~0UL)
+
+#define _U	0x01	/* upper */
+#define _L	0x02	/* lower */
+#define _D	0x04	/* digit */
+#define _C	0x08	/* cntrl */
+#define _P	0x10	/* punct */
+#define _S	0x20	/* white space (space/lf/tab) */
+#define _X	0x40	/* hex digit */
+#define _SP	0x80	/* hard space (0x20) */
+
+void* memset(void *s, int c, size_t n);
+void* memcpy(void *dest, const void *src, size_t n);
+void* memmove(void *dest, const void *src, size_t n);
+int memcmp(const void *s1, const void *s2, size_t n);
+
+int tolower(int c);
+int toupper(int c);
+
+int strcmp (const char *s1, const char *s2);
+int strncmp(const char *cs,const char *ct, size_t count);
+int strcasecmp(const char *a, const char *b);
+int strncasecmp(const char *cs, const char *ct, size_t count);
+int sscanf(const char * buf, const char * fmt, ...);
+size_t strlen(const char *s);
+char *strstr(const char * s1,const char * s2);
+char *strcpy(char *dest, const char *src);
+char *strncpy(char *dest, const char *src, size_t n);
+size_t strlcpy(char *dst, const char *src, size_t siz);
+char *strncat(char *dest, const char *src, size_t count);
+char *strcat(char * dest, const char * src);
+char *strchr(const char *s1, int i);
+char *strrchr(const char *t, int c);
+char *strdup(const char *s);
+char *strtok(char *s, const char *delim);
+char*strtok_r(char*s, const char*delim, char**ptrptr);
+
+size_t strcspn(const char *s, const char *reject);
+size_t strspn (const char *s, const char *accept);
+
+#endif
+
+#endif
diff --git a/components/libc/minilibc/sys/time.h b/components/libc/minilibc/sys/time.h
new file mode 100644
index 0000000000..4cd5cb8ba8
--- /dev/null
+++ b/components/libc/minilibc/sys/time.h
@@ -0,0 +1,43 @@
+#ifndef _SYS_TIME_H_

+#define _SYS_TIME_H_

+

+#include <sys/types.h>

+

+/*

+ * Structure returned by gettimeofday(2) system call,

+ * and used in other calls.

+ */

+struct timeval {

+	long	tv_sec;		/* seconds */

+	long	tv_usec;	/* and microseconds */

+};

+

+/*

+ * Structure defined by POSIX.1b to be like a timeval.

+ */

+struct timespec {

+	time_t	tv_sec;		/* seconds */

+	long	tv_nsec;	/* and nanoseconds */

+};

+

+struct timezone {

+  int tz_minuteswest;	/* minutes west of Greenwich */

+  int tz_dsttime;	/* type of dst correction */

+};

+

+struct tm {

+  int tm_sec;			/* Seconds.	[0-60] (1 leap second) */

+  int tm_min;			/* Minutes.	[0-59] */

+  int tm_hour;			/* Hours.	[0-23] */

+  int tm_mday;			/* Day.		[1-31] */

+  int tm_mon;			/* Month.	[0-11] */

+  int tm_year;			/* Year - 1900. */

+  int tm_wday;			/* Day of week.	[0-6] */

+  int tm_yday;			/* Days in year.[0-365]	*/

+  int tm_isdst;			/* DST.		[-1/0/1]*/

+

+  long int tm_gmtoff;		/* Seconds east of UTC.  */

+  const char *tm_zone;		/* Timezone abbreviation.  */

+};

+

+#endif

diff --git a/components/libc/minilibc/sys/types.h b/components/libc/minilibc/sys/types.h
new file mode 100644
index 0000000000..a9a1dafa2e
--- /dev/null
+++ b/components/libc/minilibc/sys/types.h
@@ -0,0 +1,24 @@
+#ifndef __TYPES_H__
+#define __TYPES_H__
+
+#include <rtthread.h>
+
+typedef rt_off_t 	off_t;
+typedef rt_size_t 	size_t;
+
+typedef rt_uint8_t 	u_char;
+typedef rt_uint16_t u_short;
+typedef rt_ubase_t 	u_int;
+typedef rt_uint32_t u_long;
+
+typedef rt_uint8_t 	u_int8_t;
+typedef rt_uint16_t u_int16_t;
+typedef rt_uint32_t u_int32_t;
+
+typedef rt_time_t time_t;
+
+#ifndef NULL
+#define NULL RT_NULL
+#endif
+
+#endif
diff --git a/components/libc/minilibc/time.c b/components/libc/minilibc/time.c
new file mode 100644
index 0000000000..4c39c3c25d
--- /dev/null
+++ b/components/libc/minilibc/time.c
@@ -0,0 +1,174 @@
+#include <time.h>

+

+/* days per month -- nonleap! */

+const short __spm[13] =

+  { 0,

+    (31),

+    (31+28),

+    (31+28+31),

+    (31+28+31+30),

+    (31+28+31+30+31),

+    (31+28+31+30+31+30),

+    (31+28+31+30+31+30+31),

+    (31+28+31+30+31+30+31+31),

+    (31+28+31+30+31+30+31+31+30),

+    (31+28+31+30+31+30+31+31+30+31),

+    (31+28+31+30+31+30+31+31+30+31+30),

+    (31+28+31+30+31+30+31+31+30+31+30+31),

+  };

+static long int timezone;

+static const char days[] = "Sun Mon Tue Wed Thu Fri Sat ";

+static const char months[] = "Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec ";

+

+/* seconds per day */

+#define SPD 24*60*60

+

+int __isleap(int year) {

+  /* every fourth year is a leap year except for century years that are

+   * not divisible by 400. */

+/*  return (year % 4 == 0 && (year % 100 != 0 || year % 400 == 0)); */

+  return (!(year%4) && ((year%100) || !(year%400)));

+}

+

+struct tm *gmtime_r(const time_t *timep, struct tm *r) {

+  time_t i;

+  register time_t work=*timep%(SPD);

+  r->tm_sec=work%60; work/=60;

+  r->tm_min=work%60; r->tm_hour=work/60;

+  work=*timep/(SPD);

+  r->tm_wday=(4+work)%7;

+  for (i=1970; ; ++i) {

+    register time_t k=__isleap(i)?366:365;

+    if (work>=k)

+      work-=k;

+    else

+      break;

+  }

+  r->tm_year=i-1900;

+  r->tm_yday=work;

+

+  r->tm_mday=1;

+  if (__isleap(i) && (work>58)) {

+    if (work==59) r->tm_mday=2; /* 29.2. */

+    work-=1;

+  }

+

+  for (i=11; i && (__spm[i]>work); --i) ;

+  r->tm_mon=i;

+  r->tm_mday+=work-__spm[i];

+  return r;

+}

+

+struct tm* localtime_r(const time_t* t, struct tm* r) {

+  time_t tmp;

+  struct timezone tz;

+  gettimeofday(0, &tz);

+  timezone=tz.tz_minuteswest*60L;

+  tmp=*t+timezone;

+  return gmtime_r(&tmp,r);

+}

+

+struct tm* localtime(const time_t* t) {

+  static struct tm tmp;

+  return localtime_r(t,&tmp);

+}

+

+time_t timegm(struct tm *const t) {

+  register time_t  day;

+  register time_t  i;

+  register time_t years = t->tm_year - 70;

+

+  if (t->tm_sec>60) { t->tm_min += t->tm_sec/60; t->tm_sec%=60; }

+  if (t->tm_min>60) { t->tm_hour += t->tm_min/60; t->tm_min%=60; }

+  if (t->tm_hour>60) { t->tm_mday += t->tm_hour/60; t->tm_hour%=60; }

+  if (t->tm_mon>12) { t->tm_year += t->tm_mon/12; t->tm_mon%=12; }

+  while (t->tm_mday>__spm[1+t->tm_mon]) {

+    if (t->tm_mon==1 && __isleap(t->tm_year+1900)) {

+      if (t->tm_mon==31+29) break;

+      --t->tm_mday;

+    }

+    t->tm_mday-=__spm[t->tm_mon];

+    ++t->tm_mon;

+    if (t->tm_mon>11) { t->tm_mon=0; ++t->tm_year; }

+  }

+

+  if (t->tm_year < 70)

+    return (time_t) -1;

+

+  /* Days since 1970 is 365 * number of years + number of leap years since 1970 */

+  day  = years * 365 + (years + 1) / 4;

+

+  /* After 2100 we have to substract 3 leap years for every 400 years

+     This is not intuitive. Most mktime implementations do not support

+     dates after 2059, anyway, so we might leave this out for it's

+     bloat. */

+  if ((years -= 131) >= 0) {

+    years /= 100;

+    day -= (years >> 2) * 3 + 1;

+    if ((years &= 3) == 3) years--;

+    day -= years;

+  }

+

+  day += t->tm_yday = __spm [t->tm_mon] + t->tm_mday-1 + ( __isleap (t->tm_year+1900)  &  (t->tm_mon > 1) );

+

+  /* day is now the number of days since 'Jan 1 1970' */

+  i = 7;

+  t->tm_wday = (day + 4) % i;                        /* Sunday=0, Monday=1, ..., Saturday=6 */

+

+  i = 24;

+  day *= i;

+  i = 60;

+  return ((day + t->tm_hour) * i + t->tm_min) * i + t->tm_sec;

+}

+

+time_t mktime(register struct tm* const t) {

+  time_t x=timegm(t);

+  struct timezone tz;

+  gettimeofday(0, &tz);

+  timezone=tz.tz_minuteswest*60L;

+  x+=timezone;

+  return x;

+}

+

+static void num2str(char *c,int i) {

+  c[0]=i/10+'0';

+  c[1]=i%10+'0';

+}

+

+char *asctime_r(const struct tm *t, char *buf) {

+  /* "Wed Jun 30 21:49:08 1993\n" */

+  *(int*)buf=*(int*)(days+(t->tm_wday<<2));

+  *(int*)(buf+4)=*(int*)(months+(t->tm_mon<<2));

+  num2str(buf+8,t->tm_mday);

+  if (buf[8]=='0') buf[8]=' ';

+  buf[10]=' ';

+  num2str(buf+11,t->tm_hour);

+  buf[13]=':';

+  num2str(buf+14,t->tm_min);

+  buf[16]=':';

+  num2str(buf+17,t->tm_sec);

+  buf[19]=' ';

+  num2str(buf+20,(t->tm_year+1900)/100);

+  num2str(buf+22,(t->tm_year+1900)%100);

+  buf[24]='\n';

+  return buf;

+}

+

+char *asctime(const struct tm *timeptr) {

+  static char buf[25];

+  return asctime_r(timeptr,buf);

+}

+

+char *ctime(const time_t *timep) {

+  return asctime(localtime(timep));

+}

+

+int gettimeofday (struct timeval *tp, void *ignore)

+{

+     time_t t;

+

+     t = time(NULL);

+     tp->tv_sec  = t;

+     tp->tv_usec = 0;

+     return 0;

+}

diff --git a/components/libc/minilibc/time.h b/components/libc/minilibc/time.h
new file mode 100644
index 0000000000..0b2aabbed1
--- /dev/null
+++ b/components/libc/minilibc/time.h
@@ -0,0 +1,6 @@
+#ifndef __TIME_H__

+#define __TIME_H__

+

+#include <sys/time.h>

+

+#endif