* parsing C -> asm, but before asm -> machine code.
*/
//asm volatile ("pshx\npsha\npshb\n"); /* save registers */
- asm volatile ("ldx %0\n" :: "m" (ms));
+ asm volatile ("ldx %0\n" :: "m" (ms) : "x");
asm volatile (
"delay_loop:\n"
- " dex\n" /* 3 */
- " beq delay_out\n" /* 3 */
- " ldd #327\n" /* 3 */
+ //" ldd #327\n" /* 3 */
+ " ldd #150\n" /* 3 */
"delay_inner_loop:\n" /* 15 cycles each */
" cpd #0x0000\n" /* 5 */
" beq delay_inner_loop_end\n" /* 3 */
" subd #0x0001\n" /* 4 */
" bra delay_inner_loop\n" /* 3 */
"delay_inner_loop_end:\n"
+ " dex\n" /* 3 */
+ " beq delay_out\n" /* 3 */
" bra delay_loop\n" /* 3 */
- "delay_out:\n");
+ "delay_out:\n" ::: "x", "d");
/*" pulb\n"
" pula\n"
" pulx\n");*/
if (src[i] == 0 && i < max_size) dst[i] = 0; /* null terminator */
}
+bool my_strncmp(char* a, char* b, u8 len) {
+ u8 i;
+ for (i = 0; i < len; i++) {
+ if (*a != *b) return 0;
+ a++;
+ b++;
+ }
+ return 1;
+}
+
void my_memcpy(char* dst, char* src, u8 size) {
u8 i = 0;
for (i = 0; i < size; i++) dst[i] = src[i];
}
+
+void my_memset(char* dst, u8 val, u16 count) {
+ char* c;
+ for (c = dst; c < dst+count; c++) *c = val;
+}