From a2deca64d24427d6856dc5e7fc43bde4b1641a43 Mon Sep 17 00:00:00 2001
From: Prakxo <87568477+Prakxo@users.noreply.github.com>
Date: Tue, 15 Aug 2023 18:21:42 +0100
Subject: aprintf OK (#51)

* m_pause OK

* yeah now it's OK lol

* refactor

* refactor 2

* m_controller OK

* format

* fix size comment in game

* refactor 3

* refactor 4

* refactor 5

* add unused macro

* aprintf OK
---
 include/libc/stdarg.h | 46 ++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 46 insertions(+)
 create mode 100644 include/libc/stdarg.h

(limited to 'include/libc')

diff --git a/include/libc/stdarg.h b/include/libc/stdarg.h
new file mode 100644
index 0000000..77b8b88
--- /dev/null
+++ b/include/libc/stdarg.h
@@ -0,0 +1,46 @@
+#ifndef STDARG_H
+#define STDARG_H
+
+#include "ultra64.h"
+
+// When building with GCC, use the official vaarg macros to avoid warnings
+// and possibly bad codegen.
+#ifdef __GNUC__
+#define va_list __builtin_va_list
+#define va_start __builtin_va_start
+#define va_arg __builtin_va_arg
+#define va_end __builtin_va_end
+#else
+
+typedef char *va_list;
+#define _FP 1
+#define _INT 0
+#define _STRUCT 2
+
+#define _VA_FP_SAVE_AREA 0x10
+#define _VA_ALIGN(p, a) (((unsigned int)(((char *)p) + ((a) > 4 ? (a) : 4) - 1)) & -((a) > 4 ? (a) : 4))
+#define va_start(vp, parmN) (vp = ((va_list)&parmN + sizeof(parmN)))
+
+#define __va_stack_arg(list, mode)                          \
+    (                                                       \
+        ((list) = (char *)_VA_ALIGN(list, __builtin_alignof(mode)) + \
+                  _VA_ALIGN(sizeof(mode), 4)),              \
+        (((char *)list) - (_VA_ALIGN(sizeof(mode), 4) - sizeof(mode))))
+
+#define __va_double_arg(list, mode)                                                                    \
+    (                                                                                                  \
+        (((long)list & 0x1) /* 1 byte aligned? */                                                      \
+             ? (list = (char *)((long)list + 7), (char *)((long)list - 6 - _VA_FP_SAVE_AREA))          \
+             : (((long)list & 0x2) /* 2 byte aligned? */                                               \
+                    ? (list = (char *)((long)list + 10), (char *)((long)list - 24 - _VA_FP_SAVE_AREA)) \
+                    : __va_stack_arg(list, mode))))
+
+#define va_arg(list, mode) ((mode *)(((__builtin_classof(mode) == _FP &&          \
+                                       __builtin_alignof(mode) == sizeof(double)) \
+                                          ? __va_double_arg(list, mode)           \
+                                          : __va_stack_arg(list, mode))))[-1]
+#define va_end(__list)
+
+#endif /* __GNUC__ */
+
+#endif /* STDARG_H */
-- 
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