X-Git-Url: http://git.mutantstargoat.com/user/nuclear/?p=visor;a=blobdiff_plain;f=libvisor%2Fsrc%2Fvilibc.c;fp=libvisor%2Fsrc%2Fvilibc.c;h=6c021b0487cb78a747e2218fb9f53c236b507065;hp=0000000000000000000000000000000000000000;hb=4f957b16f77eb7761afd9e0b9064c7f08deb45be;hpb=dc83bdff56d4dd7454559f5e918652f32f7e9d6d

diff --git a/libvisor/src/vilibc.c b/libvisor/src/vilibc.c
new file mode 100644
index 0000000..6c021b0
--- /dev/null
+++ b/libvisor/src/vilibc.c
@@ -0,0 +1,77 @@
+#include "vilibc.h"
+#include "vimpl.h"
+
+#ifndef HAVE_LIBC
+
+void *memset(void *s, int c, unsigned long n)
+{
+	char *p = s;
+	while(n--) *p++ = c;
+	return s;
+}
+
+void *memcpy(void *dest, const void *src, unsigned long n)
+{
+	char *d = dest;
+	const char *s = src;
+	while(n--) *d++ = *s++;
+	return dest;
+}
+
+void *memmove(void *dest, const void *src, unsigned long n)
+{
+	unsigned long i;
+	char *dptr;
+	const char *sptr;
+
+	if(dest <= src) {
+		/* forward copy */
+		dptr = dest;
+		sptr = src;
+		for(i=0; i<n; i++) {
+			*dptr++ = *sptr++;
+		}
+	} else {
+		/* backwards copy */
+		dptr = (char*)dest + n - 1;
+		sptr = (const char*)src + n - 1;
+		for(i=0; i<n; i++) {
+			*dptr-- = *sptr--;
+		}
+	}
+
+	return dest;
+}
+
+unsigned long strlen(const char *s)
+{
+	unsigned long len = 0;
+	while(*s++) len++;
+	return len;
+}
+
+int strcmp(const char *s1, const char *s2)
+{
+	while(*s1 && *s1 == *s2) {
+		s1++;
+		s2++;
+	}
+	return *s1 - *s2;
+}
+
+#endif	/* !def HAVE_LIBC */
+
+static char errstr_buf[256];
+
+void vi_error(struct visor *vi, const char *fmt, ...)
+{
+	va_list ap;
+
+	va_start(ap, fmt);
+	vsnprintf(errstr_buf, sizeof errstr_buf, fmt, ap);
+	va_end(ap);
+
+	if(vi->tty.status) {
+		vi->tty.status(errstr_buf, vi->tty_cls);
+	}
+}