porting over pcboot codebase

[com32] / src / libc / stdarg.h

diff --git a/src/libc/stdarg.h b/src/libc/stdarg.h
new file mode 100644 (file)
index 0000000..2d0bb92
--- /dev/null
+++ b/src/libc/stdarg.h
@@ -0,0 +1,29 @@
+/*
+pcboot - bootable PC demo/game kernel
+Copyright (C) 2018  John Tsiombikas <nuclear@member.fsf.org>
+
+This program is free software: you can redistribute it and/or modify
+it under the terms of the GNU General Public License as published by
+the Free Software Foundation, either version 3 of the License, or
+(at your option) any later version.
+
+This program is distributed in the hope that it will be useful,
+but WITHOUT ANY WARRANTY, without even the implied warranty of
+MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+GNU General Public License for more details.
+
+You should have received a copy of the GNU General Public License
+along with this program.  If not, see <https://www.gnu.org/licenses/>.
+*/
+#ifndef STDARG_H_
+#define STDARG_H_
+
+/* Assumes that arguments are passed on the stack 4-byte aligned */
+
+typedef int* va_list;
+
+#define va_start(ap, last)     ((ap) = (int*)&(last) + 1)
+#define va_arg(ap, type)       (*(type*)(ap)++)
+#define va_end(ap)
+
+#endif /* STDARG_H_ */