From e611b132f9b8abe35b362e5870b74bce94a1e58e Mon Sep 17 00:00:00 2001
From: Adam <you@example.com>
Date: Sat, 16 May 2020 20:51:50 -0700
Subject: initial commit

---
 private/crtlib/include/stdarg.h | 125 ++++++++++++++++++++++++++++++++++++++++
 1 file changed, 125 insertions(+)
 create mode 100644 private/crtlib/include/stdarg.h

(limited to 'private/crtlib/include/stdarg.h')

diff --git a/private/crtlib/include/stdarg.h b/private/crtlib/include/stdarg.h
new file mode 100644
index 000000000..91cc920cd
--- /dev/null
+++ b/private/crtlib/include/stdarg.h
@@ -0,0 +1,125 @@
+/***
+*stdarg.h - defines ANSI-style macros for variable argument functions
+*
+*	Copyright (c) 1985-1993, Microsoft Corporation. All rights reserved.
+*
+*Purpose:
+*	This file defines ANSI-style macros for accessing arguments
+*	of functions which take a variable number of arguments.
+*	[ANSI]
+*
+****/
+
+#ifndef _INC_STDARG
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+
+
+#ifndef _VA_LIST_DEFINED
+#ifdef _M_ALPHA
+typedef struct {
+	char *a0;	/* pointer to first homed integer argument */
+	int offset;	/* byte offset of next parameter */
+} va_list;
+#else
+typedef char *	va_list;
+#endif
+#define _VA_LIST_DEFINED
+#endif
+
+#if defined(_M_IX86)
+
+/* Use these types and definitions if generating code for x86 */
+
+#define _INTSIZEOF(n)	( (sizeof(n) + sizeof(int) - 1) & ~(sizeof(int) - 1) )
+
+#define va_start(ap,v)	( ap = (va_list)&v + _INTSIZEOF(v) )
+#define va_arg(ap,t)	( *(t *)((ap += _INTSIZEOF(t)) - _INTSIZEOF(t)) )
+#define va_end(ap)	( ap = (va_list)0 )
+
+#elif defined(_M_MRX000)
+
+/* Use these types and definitions if generating code for MIPS */
+
+#define va_start(ap,v) ap  = (va_list)&v + sizeof(v)
+#define va_end(list)
+#define va_arg(list, mode) ((mode *)(list =\
+ (char *) ((((int)list + (__builtin_alignof(mode)<=4?3:7)) &\
+ (__builtin_alignof(mode)<=4?-4:-8))+sizeof(mode))))[-1]
+
+/*  +++++++++++++++++++++++++++++++++++++++++++
+    Because of parameter passing conventions in C:
+    use mode=int for char, and short types
+    use mode=double for float types
+    use a pointer for array types
+    +++++++++++++++++++++++++++++++++++++++++++ */
+
+
+#elif defined(_M_ALPHA)
+
+
+/* Use these types and definitions if generating code for ALPHA */
+
+/*
+ * The Alpha compiler supports two builtin functions that are used to
+ * implement stdarg/varargs.  The __builtin_va_start function is used
+ * by va_start to initialize the data structure that locates the next
+ * argument.  The __builtin_isfloat function is used by va_arg to pick
+ * which part of the home area a given register argument is stored in.
+ * The home area is where up to six integer and/or six floating point
+ * register arguments are stored down (so they can also be referenced
+ * by a pointer like any arguments passed on the stack).
+ */
+
+extern void * __builtin_va_start(va_list, ...);
+
+#ifdef _CFRONT
+#define __builtin_isfloat(a) __builtin_alignof(a)
+#endif
+
+#define va_start(list, v) __builtin_va_start(list, v, 1)
+#define va_end(list)
+#define va_arg(list, mode) \
+    ( *(        ((list).offset += ((int)sizeof(mode) + 7) & -8) , \
+        (mode *)((list).a0 + (list).offset - \
+                    ((__builtin_isfloat(mode) && (list).offset <= (6 * 8)) ? \
+                        (6 * 8) + 8 : ((int)sizeof(mode) + 7) & -8) \
+                ) \
+       ) \
+    )
+
+#elif defined(_M_PPC)
+
+/* Microsoft C8 front end (used in Motorola Merged compiler) */
+/* bytes that a type occupies in the argument list */
+#define _INTSIZEOF(n)   ( (sizeof(n) + sizeof(int) - 1) & ~(sizeof(int) - 1) )
+/* return 'ap' adjusted for type 't' in arglist */
+#define	_ALIGNIT(ap,t) \
+	((((int)(ap))+(sizeof(t)<8?3:7)) & (sizeof(t)<8?~3:~7))
+
+#define va_start(ap,v)  ( ap = (va_list)&v + _INTSIZEOF(v) )
+#define va_arg(ap,t)    ( *(t *)((ap = (char *) (_ALIGNIT(ap, t) + _INTSIZEOF(t))) - _INTSIZEOF(t)) )
+#define va_end(ap)      ( ap = (va_list)0 )
+
+#else
+
+/* A guess at the proper definitions for other platforms */
+
+#define _INTSIZEOF(n)	( (sizeof(n) + sizeof(int) - 1) & ~(sizeof(int) - 1) )
+
+#define va_start(ap,v)	( ap = (va_list)&v + _INTSIZEOF(v) )
+#define va_arg(ap,t)	( *(t *)((ap += _INTSIZEOF(t)) - _INTSIZEOF(t)) )
+#define va_end(ap)	( ap = (va_list)0 )
+
+
+#endif
+
+#ifdef __cplusplus
+}
+#endif
+
+#define _INC_STDARG
+#endif	/* _INC_STDARG */
-- 
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