initial import of NetBSD tree

1 files changed, 66 insertions, 0 deletions

diff --git a/gnu/usr.bin/ld/etc.c b/gnu/usr.bin/ld/etc.c
new file mode 100644
index 00000000000..c50a63fb657
--- /dev/null
+++ b/gnu/usr.bin/ld/etc.c
@@ -0,0 +1,66 @@
+/*
+ * $Id: etc.c,v 1.1 1995/10/18 08:40:55 deraadt Exp $
+ */
+
+#include <err.h>
+#include <stdlib.h>
+#include <string.h>
+
+/*
+ * Like malloc but get fatal error if memory is exhausted.
+ */
+void *
+xmalloc(size)
+	size_t size;
+{
+	register void	*result = (void *)malloc(size);
+
+	if (!result)
+		errx(1, "virtual memory exhausted");
+
+	return result;
+}
+
+/*
+ * Like realloc but get fatal error if memory is exhausted.
+ */
+void *
+xrealloc(ptr, size)
+	void *ptr;
+	size_t size;
+{
+	register void	*result;
+
+	if (ptr == NULL)
+		result = (void *)malloc(size);
+	else
+		result = (void *)realloc(ptr, size);
+
+	if (!result)
+		errx(1, "virtual memory exhausted");
+
+	return result;
+}
+
+/*
+ * Return a newly-allocated string whose contents concatenate
+ * the strings S1, S2, S3.
+ */
+char *
+concat(s1, s2, s3)
+	const char *s1, *s2, *s3;
+{
+	register int	len1 = strlen(s1),
+			len2 = strlen(s2),
+			len3 = strlen(s3);
+
+	register char *result = (char *)xmalloc(len1 + len2 + len3 + 1);
+
+	strcpy(result, s1);
+	strcpy(result + len1, s2);
+	strcpy(result + len1 + len2, s3);
+	result[len1 + len2 + len3] = 0;
+
+	return result;
+}
+