123 lines
1.9 KiB
C
123 lines
1.9 KiB
C
// a simple test program - this version would talk to a device
|
|
// written in GLua
|
|
#include <stdint.h>
|
|
#include <stdarg.h>
|
|
|
|
uint32_t strlen(const char* str) {
|
|
if(!str)
|
|
return 0;
|
|
const char* c = str;
|
|
while(*c++)
|
|
;
|
|
return c - str;
|
|
}
|
|
|
|
#define GLUA_DEVICE *(volatile uint32_t*)0x12000000
|
|
|
|
#define SYSCON *(volatile uint32_t*)0x11100000
|
|
|
|
#define UART_BASE 0x10000000
|
|
#define UART_DATA *(volatile uint32_t*)UART_BASE
|
|
#define UART_STATUS UART_DATA
|
|
|
|
void putc(char c) {
|
|
UART_DATA = (uint32_t)c;
|
|
}
|
|
|
|
__attribute__((noinline)) void puts(const char* str) {
|
|
const uint32_t length = strlen(str);
|
|
for(uint32_t i = 0; i < length; ++i)
|
|
putc(str[i]);
|
|
}
|
|
|
|
int itoa(int value, char* sp, int radix) {
|
|
char tmp[16];
|
|
char* tp = tmp;
|
|
int i;
|
|
unsigned v;
|
|
|
|
int sign = (radix == 10 && value < 0);
|
|
if(sign)
|
|
v = -value;
|
|
else
|
|
v = (unsigned)value;
|
|
|
|
while(v || tp == tmp) {
|
|
i = v % radix;
|
|
v /= radix;
|
|
if(i < 10)
|
|
*tp++ = i + '0';
|
|
else
|
|
*tp++ = i + 'a' - 10;
|
|
}
|
|
|
|
int len = tp - tmp;
|
|
|
|
if(sign) {
|
|
*sp++ = '-';
|
|
len++;
|
|
}
|
|
|
|
while(tp > tmp)
|
|
*sp++ = *--tp;
|
|
|
|
*sp = '\0';
|
|
return len;
|
|
}
|
|
|
|
void vprintf(const char* format, va_list val) {
|
|
const int fl = strlen(format);
|
|
for(int i = 0; i < fl; ++i) {
|
|
switch(format[i]) {
|
|
case '%':
|
|
if(format[i+1] == '%')
|
|
putc('%');
|
|
switch(format[i+1]) {
|
|
case 'i':
|
|
case 'd': {
|
|
char a[32];
|
|
itoa(va_arg(val, uint32_t), &a[0], 10);
|
|
|
|
const int al = strlen(a);
|
|
for(int j = 0; j < al; ++j)
|
|
putc(a[j]);
|
|
} break;
|
|
|
|
case 's': {
|
|
char* p = va_arg(val, char*);
|
|
if(!p)
|
|
puts("(null)");
|
|
else
|
|
puts(p);
|
|
};
|
|
|
|
default:
|
|
putc(' ');
|
|
break;
|
|
}
|
|
break;
|
|
default:
|
|
putc(format[i]);
|
|
break;
|
|
}
|
|
}
|
|
}
|
|
|
|
void printf(const char* format, ...) {
|
|
va_list val;
|
|
va_start(val, format);
|
|
vprintf(format, val);
|
|
va_end(val);
|
|
}
|
|
|
|
|
|
|
|
void main() {
|
|
puts("fuck you garry I win");
|
|
|
|
for(int i = 0; i < 256; ++i)
|
|
printf("uhh %d\n", GLUA_DEVICE);
|
|
|
|
SYSCON = 0x5555;
|
|
}
|