split off arch-specific stdarg.h stuff

[musl] / arch / i386 / bits / stdarg.h

diff --git a/arch/i386/bits/stdarg.h b/arch/i386/bits/stdarg.h
new file mode 100644 (file)
index 0000000..6b1830d
--- /dev/null
+++ b/arch/i386/bits/stdarg.h
@@ -0,0 +1,9 @@
+#define __VA_ALIGNED_SIZE(x) ((sizeof(x) + sizeof(int) - 1) & ~(sizeof(int) - 1))
+
+#define va_start(ap, last) ((ap) = (void *)(((char *)&(last)) + __VA_ALIGNED_SIZE(last)))
+#define va_end(ap) ((void)0)
+#define va_copy(dest, src) ((dest) = (src))
+
+#define va_arg(ap, type) \
+       ( ((ap) = (va_list)((char *)(ap) + __VA_ALIGNED_SIZE(type))), \
+       *(type *)(void *)((char *)(ap) - __VA_ALIGNED_SIZE(type)) )