Root/
| Source at commit 1406 created 12 years 10 months ago. By meklort, Revert drivers.c so that kexts are only loaded when OSBundleRequired is set and that value is not safe mode. Added some comments about it too. | |
|---|---|
| 1 | /*␊ |
| 2 | * memset.c␊ |
| 3 | */␊ |
| 4 | ␊ |
| 5 | #include <string.h>␊ |
| 6 | #include <stdint.h>␊ |
| 7 | ␊ |
| 8 | void *memset(void *dst, int c, size_t n)␊ |
| 9 | {␊ |
| 10 | ␉char *q = dst;␊ |
| 11 | ␊ |
| 12 | #if defined(__i386__)␊ |
| 13 | ␉size_t nl = n >> 2;␊ |
| 14 | ␉asm volatile ("cld ; rep ; stosl ; movl %3,%0 ; rep ; stosb"␊ |
| 15 | ␉␉ : "+c" (nl), "+D" (q)␊ |
| 16 | ␉␉ : "a" ((unsigned char)c * 0x01010101U), "r" (n & 3));␊ |
| 17 | #elif defined(__x86_64__)␊ |
| 18 | ␉size_t nq = n >> 3;␊ |
| 19 | ␉asm volatile ("cld ; rep ; stosq ; movl %3,%%ecx ; rep ; stosb"␊ |
| 20 | ␉␉ :"+c" (nq), "+D" (q)␊ |
| 21 | ␉␉ : "a" ((unsigned char)c * 0x0101010101010101U),␊ |
| 22 | ␉␉␉"r" ((uint32_t) n & 7));␊ |
| 23 | #else␊ |
| 24 | ␉while (n--) {␊ |
| 25 | ␉␉*q++ = c;␊ |
| 26 | ␉}␊ |
| 27 | #endif␊ |
| 28 | ␊ |
| 29 | ␉return dst;␊ |
| 30 | }␊ |
| 31 | |
