nexus.c File Reference

#include "nexus.h"

Include dependency graph for nexus.c:

Go to the source code of this file.

Functions
void *	memset (void *b, int c, int len)
uint32_t	ustrlen (const char *s)
void *	memcpy (void *str1, const void *str2, long n)
int	strcmp (const char *s1, const char *s2)
int	ustrncmp (const char *s1, const char *s2, uint32_t n)
void	ustrcpy (char *dest, const char *source)

Function Documentation

void* memcpy	(	void *	,
		const void *	,
		long
	)

A duplicate of the c standard memcpy function.

Definition at line 25 of file nexus.c.

Referenced by shell_set_ps1().

                                                   {

    long i = 0;
    uint8_t *dest8 = (uint8_t*)str1;
    uint8_t *source8 = (uint8_t*)str2;
    for (i=0; i<n; ++i) {
        dest8[i] = source8[i];
    }
}

Here is the caller graph for this function:

void* memset	(	void *	,
		int	,
		int
	)

A duplicate of the c standard memset function.

Definition at line 4 of file nexus.c.

Referenced by shell_clear_shell_buffer(), and system_register_command().

                                      {

    int i;
    unsigned char *p = b;
    i = 0;
    while(len > 0) {
    *p = c;
    ++p;
    --len;
    }
    return b;
}

Here is the caller graph for this function:

int strcmp	(	const char *	,
		const char *
	)

A duplicate of the c standard strcmp function.

Definition at line 35 of file nexus.c.

References ustrncmp().

Referenced by _system_command_from_name().

                                           {

    return(ustrncmp(s1, s2, (uint32_t)-1));
}

Here is the call graph for this function:

Here is the caller graph for this function:

void ustrcpy	(	char *	,
		const char *
	)

A duplicate of the c standard strcpy function.

Definition at line 69 of file nexus.c.

Referenced by system_register_command().

                                             {
    uint32_t i = 0;
    while (1) {
    dest[i] = source[i];
    if (dest[i++] == '\0') { break; }
    }
}

Here is the caller graph for this function:

uint32_t ustrlen

(

const char *

s

)

A duplicate of the c standard strlen function.

Definition at line 17 of file nexus.c.

Referenced by shell_set_ps1(), and uart_send_string_().

                                {
    uint32_t len = 0;
    while(s[len]) { ++len; }
    return(len);
}

Here is the caller graph for this function:

int ustrncmp	(	const char *	,
		const char *	,
		uint32_t
	)

A duplicate of the c standard strncmp function.

Definition at line 40 of file nexus.c.

Referenced by strcmp().

                                                         {

    /* Loop while there are more characters. */
    while(n) {
        /* If we reached a NULL in both strings, they must be equal so
     * we end the comparison and return 0 */
        if(!*s1 && !*s2) {
            return(0);
        }

        /* Compare the two characters and, if different, return the
     * relevant return code. */
        if(*s2 < *s1) {
            return(1);
        }
        if(*s1 < *s2) {
            return(-1);
        }

        /* Move on to the next character. */
        s1++;
        s2++;
        n--;
    }
    /* If we fall out, the strings must be equal for at least the
     * first n characters so return 0 to indicate this. */
    return 0;
}

Here is the caller graph for this function: