lib: Add mlibc

Signed-off-by: Ian Moffett <ian@osmora.org>

1 files changed, 64 insertions, 0 deletions

diff --git a/lib/mlibc/options/glibc/generic/stdio_ext-stubs.cpp b/lib/mlibc/options/glibc/generic/stdio_ext-stubs.cpp
new file mode 100644
index 0000000..b9b61fc
--- /dev/null
+++ b/lib/mlibc/options/glibc/generic/stdio_ext-stubs.cpp
@@ -0,0 +1,64 @@
+
+#include <stdio_ext.h>
+#include <bits/ensure.h>
+#include <mlibc/debug.hpp>
+
+size_t __fbufsize(FILE *) {
+	__ensure(!"Not implemented");
+	__builtin_unreachable();
+}
+
+size_t __fpending(FILE *file_base) {
+	__ensure(file_base->__dirty_end >= file_base->__dirty_begin);
+	return file_base->__dirty_end - file_base->__dirty_begin;
+}
+
+int __flbf(FILE *) {
+	__ensure(!"Not implemented");
+	__builtin_unreachable();
+}
+int __freadable(FILE *) {
+	__ensure(!"Not implemented");
+	__builtin_unreachable();
+}
+int __fwritable(FILE *) {
+	__ensure(!"Not implemented");
+	__builtin_unreachable();
+}
+
+int __freading(FILE *file_base) {
+	return file_base->__io_mode == 0;
+}
+
+int __fwriting(FILE *file_base) {
+	return file_base->__io_mode == 1;
+}
+
+int __fsetlocking(FILE *, int) {
+	mlibc::infoLogger() << "mlibc: __fsetlocking() is a no-op" << frg::endlog;
+	return FSETLOCKING_INTERNAL;
+}
+
+void _flushlbf(void) {
+	__ensure(!"Not implemented");
+	__builtin_unreachable();
+}
+
+// The following functions are defined by musl.
+
+size_t __freadahead(FILE *file_base) {
+	if(file_base->__io_mode != 0) {
+		mlibc::infoLogger() << "mlibc: __freadahead() called but file is not open for reading" << frg::endlog;
+		return 0;
+	}
+	return file_base->__valid_limit - file_base->__offset;
+}
+const char *__freadptr(FILE *, size_t *) {
+	__ensure(!"Not implemented");
+	__builtin_unreachable();
+}
+void __fseterr(FILE *) {
+	__ensure(!"Not implemented");
+	__builtin_unreachable();
+}
+