/**
* The simple implementation of printf.
*/
void term_printf(const char* fmt, ...)
{
va_list ap;
int32_t d;
uint32_t u;
uint32_t h;
char c, *s;
va_start(ap, fmt);
while(*fmt != '\0') {
if(*fmt == '%') {
fmt++;
if(*fmt == 'd') {
d = va_arg(ap, int32_t);
print_int32(d);
} else if(*fmt == 'u') {
u = va_arg(ap, uint32_t);
print_uint32(u);
} else if(*fmt == 'h') {
h = va_arg(ap, uint32_t);
print_hex(h);
} else if(*fmt == 's') {
s = va_arg(ap, char*);
print_string(s);
} else if(*fmt == 'c') {
/**********************************************************************
* Description:
* Prints Formatted strings for STD out. Format specifiers
* provide what type of data to be printed and the data value is taken
* from the argument list.
*
* Input:
* One or more Formatted string messages to be printed allong with
* other data values to be printed.
*
* Output:
* Number of characters actually printed. -1 if failure.
*********************************************************************/
int printk(char *fmt, ...)
{
va_list arg;
int ret = 0;
uint32_t val;
uint64_t val64;
//Check if valid putc() is registered.
if (_putc == NULL)
return -1;
// Variable argument processing
va_start(arg, fmt);
// Till the end of string
while(*fmt != '\0')
{
// Format the data to be printed
if(*fmt == '%')
{
fmt++;
switch(*fmt)
{
case 'd': // Print the integer
val = va_arg(arg,int);
ret += print_int32((int)val);
break;
case 'x': // Print Hex
val = va_arg(arg, uint32_t);
ret += print_hex32(val, 1);
break;
case 'c': // Print the char
val = va_arg(arg, int);
_putc((char)val);
ret++;
break;
case 'u': // Print unsigned int
val = va_arg(arg, uint32_t);
ret += print_uint32(val);
break;
case 's': // Print the string
val = va_arg(arg, uint32_t);
ret += print_string((char*)val);
break;
case 'l': // Long data
switch(*(++fmt))
{
case 'u':
val64 = va_arg(arg, uint64_t);
ret += print_uint64(val64);
break;
case 'd':
val64 = va_arg(arg, int64_t);
ret += print_int64(val64);
break;
case 'x':
val64 = va_arg(arg, uint64_t);
ret += print_hex64(val64);
break;
default:
val64 = va_arg(arg, int64_t);
ret += print_int64(val64);
break;
}
break;
default:
_putc(*fmt);
ret++;
break;
}
}
else
{
