X-Git-Url: http://git.mutantstargoat.com/user/nuclear/?p=bootcensus;a=blobdiff_plain;f=src%2Flibc%2Funistd.c;fp=src%2Flibc%2Funistd.c;h=7da132f2c741758900004bc2b837b0101bc48c73;hp=1fc05425ca354ac8ec9bd549ddc36d74ff804bb0;hb=a2f065772bcb7766859033d140980720ef824546;hpb=19e033a35e0f312848fdcf81d9b4f07cc156f2e6

diff --git a/src/libc/unistd.c b/src/libc/unistd.c
index 1fc0542..7da132f 100644
--- a/src/libc/unistd.c
+++ b/src/libc/unistd.c
@@ -19,6 +19,8 @@ along with this program.  If not, see <https://www.gnu.org/licenses/>.
 #include <errno.h>
 #include "unistd.h"
 #include "fs.h"
+#include "timer.h"
+#include "asmops.h"
 
 int chdir(const char *path)
 {
@@ -59,3 +61,13 @@ int rmdir(const char *path)
 	fs_close(fsn);
 	return 0;
 }
+
+int usleep(unsigned long usec)
+{
+	unsigned long wait_ticks = MSEC_TO_TICKS(usec / 1000ul);
+	unsigned long start_ticks = nticks;
+	while(nticks - start_ticks < wait_ticks) {
+		halt_cpu();
+	}
+	return 0;
+}