From bd5969fc876a10b18613302db7087ef3c40f18e1 Mon Sep 17 00:00:00 2001
From: Ian Moffett <ian@osmora.org>
Date: Thu, 7 Mar 2024 17:28:00 -0500
Subject: lib: Add mlibc

Signed-off-by: Ian Moffett <ian@osmora.org>
---
 .../options/bsd/generic/arpa-nameser-stubs.cpp     | 41 ++++++++++++++++++++++
 lib/mlibc/options/bsd/generic/ether.cpp            | 19 ++++++++++
 lib/mlibc/options/bsd/generic/getopt.cpp           |  8 +++++
 3 files changed, 68 insertions(+)
 create mode 100644 lib/mlibc/options/bsd/generic/arpa-nameser-stubs.cpp
 create mode 100644 lib/mlibc/options/bsd/generic/ether.cpp
 create mode 100644 lib/mlibc/options/bsd/generic/getopt.cpp

(limited to 'lib/mlibc/options/bsd/generic')

diff --git a/lib/mlibc/options/bsd/generic/arpa-nameser-stubs.cpp b/lib/mlibc/options/bsd/generic/arpa-nameser-stubs.cpp
new file mode 100644
index 0000000..e89f2bb
--- /dev/null
+++ b/lib/mlibc/options/bsd/generic/arpa-nameser-stubs.cpp
@@ -0,0 +1,41 @@
+#include <errno.h>
+#include <arpa/nameser.h>
+#include <bits/ensure.h>
+#include <mlibc/debug.hpp>
+
+// The ns_get* and ns_put* functions are taken from musl.
+unsigned ns_get16(const unsigned char *cp) {
+	return cp[0] << 8 | cp[1];
+}
+
+unsigned long ns_get32(const unsigned char *cp) {
+	return (unsigned)cp[0] << 24 | cp[1] << 16 | cp[2] << 8 | cp[3];
+}
+
+void ns_put16(unsigned s, unsigned char *cp) {
+	*cp++ = s >> 8;
+	*cp++ = s;
+}
+
+void ns_put32(unsigned long l, unsigned char *cp) {
+	*cp++ = l >> 24;
+	*cp++ = l >> 16;
+	*cp++ = l >> 8;
+	*cp++ = l;
+}
+
+int ns_initparse(const unsigned char *, int, ns_msg *) {
+	__ensure(!"Not implemented");
+	__builtin_unreachable();
+}
+
+int ns_parserr(ns_msg *, ns_sect, int, ns_rr *) {
+	__ensure(!"Not implemented");
+	__builtin_unreachable();
+}
+
+int ns_name_uncompress(const unsigned char *, const unsigned char *,
+				    const unsigned char *, char *, size_t) {
+	__ensure(!"Not implemented");
+	__builtin_unreachable();
+}
diff --git a/lib/mlibc/options/bsd/generic/ether.cpp b/lib/mlibc/options/bsd/generic/ether.cpp
new file mode 100644
index 0000000..2619320
--- /dev/null
+++ b/lib/mlibc/options/bsd/generic/ether.cpp
@@ -0,0 +1,19 @@
+#include <stdio.h>
+#include <bits/ensure.h>
+#include <netinet/ether.h>
+
+char *ether_ntoa_r(const struct ether_addr *addr, char *buf) {
+	char *orig_ptr = buf;
+
+	for(int i = 0; i < ETH_ALEN; i++) {
+		buf += sprintf(buf, i == 0 ? "%.2X" : ":%.2X", addr->ether_addr_octet[i]);
+	}
+
+	return orig_ptr;
+}
+
+
+struct ether_addr *ether_aton(const char *) {
+	__ensure(!"Not implemented");
+	__builtin_unreachable();
+}
diff --git a/lib/mlibc/options/bsd/generic/getopt.cpp b/lib/mlibc/options/bsd/generic/getopt.cpp
new file mode 100644
index 0000000..cc124ef
--- /dev/null
+++ b/lib/mlibc/options/bsd/generic/getopt.cpp
@@ -0,0 +1,8 @@
+#include <getopt.h>
+
+#if __MLIBC_GLIBC_OPTION
+
+int __optreset = 0;
+extern int optreset __attribute__((__weak__, __alias__("__optreset")));
+
+#endif //__MLIBC_GLIBC_OPTION
-- 
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