87 lines
1.6 KiB
C
87 lines
1.6 KiB
C
#include <e9print.h>
|
|
#include <stddef.h>
|
|
|
|
void (*stivale2_print)(const char *buf, size_t size) = NULL;
|
|
|
|
static const char CONVERSION_TABLE[] = "0123456789abcdef";
|
|
|
|
void e9_putc(char c) {
|
|
if (stivale2_print != NULL)
|
|
stivale2_print(&c, 1);
|
|
//asm volatile ("outb %0, %1" :: "a" (c), "Nd" (0xe9) : "memory");
|
|
}
|
|
|
|
void e9_print(const char *msg) {
|
|
for (size_t i = 0; msg[i]; i++) {
|
|
e9_putc(msg[i]);
|
|
}
|
|
}
|
|
|
|
void e9_puts(const char *msg) {
|
|
e9_print(msg);
|
|
e9_putc('\n');
|
|
}
|
|
|
|
static void e9_printhex(size_t num) {
|
|
int i;
|
|
char buf[17];
|
|
|
|
if (!num) {
|
|
e9_print("0x0");
|
|
return;
|
|
}
|
|
|
|
buf[16] = 0;
|
|
|
|
for (i = 15; num; i--) {
|
|
buf[i] = CONVERSION_TABLE[num % 16];
|
|
num /= 16;
|
|
}
|
|
|
|
i++;
|
|
e9_print("0x");
|
|
e9_print(&buf[i]);
|
|
}
|
|
|
|
static void e9_printdec(size_t num) {
|
|
int i;
|
|
char buf[21] = {0};
|
|
|
|
if (!num) {
|
|
e9_putc('0');
|
|
return;
|
|
}
|
|
|
|
for (i = 19; num; i--) {
|
|
buf[i] = (num % 10) + 0x30;
|
|
num = num / 10;
|
|
}
|
|
|
|
i++;
|
|
e9_print(buf + i);
|
|
}
|
|
|
|
void e9_printf(const char *format, ...) {
|
|
va_list argp;
|
|
va_start(argp, format);
|
|
|
|
while (*format != '\0') {
|
|
if (*format == '%') {
|
|
format++;
|
|
if (*format == 'x') {
|
|
e9_printhex(va_arg(argp, size_t));
|
|
} else if (*format == 'd') {
|
|
e9_printdec(va_arg(argp, size_t));
|
|
} else if (*format == 's') {
|
|
e9_print(va_arg(argp, char*));
|
|
}
|
|
} else {
|
|
e9_putc(*format);
|
|
}
|
|
format++;
|
|
}
|
|
|
|
e9_putc('\n');
|
|
va_end(argp);
|
|
}
|