--- Libc/Libc-1272.200.26/gen/thread_stack_pcs.c
+++ /dev/null
@@ -1,99 +0,0 @@
-/*
- * Copyright (c) 1999-2018 Apple Inc. All rights reserved.
- *
- * @APPLE_LICENSE_HEADER_START@
- *
- * This file contains Original Code and/or Modifications of Original Code
- * as defined in and that are subject to the Apple Public Source License
- * Version 2.0 (the 'License'). You may not use this file except in
- * compliance with the License. Please obtain a copy of the License at
- * http://www.opensource.apple.com/apsl/ and read it before using this
- * file.
- *
- * The Original Code and all software distributed under the License are
- * distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER
- * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
- * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
- * FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT.
- * Please see the License for the specific language governing rights and
- * limitations under the License.
- *
- * @APPLE_LICENSE_HEADER_END@
- */
-
-/*	Bertrand from vmutils -> CF -> System */
-
-#include <pthread.h>
-#include <mach/mach.h>
-#include <mach/vm_statistics.h>
-#include <stdlib.h>
-#include "stack_logging.h"
-
-
-#if defined(__i386__) || defined(__x86_64__) || defined(__arm__) || defined(__arm64__)
-#define FP_LINK_OFFSET 1
-#else
-#error ********** Unimplemented architecture
-#endif
-
-
-#define	INSTACK(a)	((a) >= stackbot && (a) <= stacktop)
-#if defined(__x86_64__)
-#define	ISALIGNED(a)	((((uintptr_t)(a)) & 0xf) == 0)
-#elif defined(__i386__)
-#define	ISALIGNED(a)	((((uintptr_t)(a)) & 0xf) == 8)
-#elif defined(__arm__) || defined(__arm64__)
-#define	ISALIGNED(a)	((((uintptr_t)(a)) & 0x1) == 0)
-#endif
-
-__private_extern__  __attribute__((noinline))
-void
-_thread_stack_pcs(vm_address_t *buffer, unsigned max, unsigned *nb,
-		unsigned skip, void *startfp)
-{
-	void *frame, *next;
-	pthread_t self = pthread_self();
-	void *stacktop = pthread_get_stackaddr_np(self);
-	void *stackbot = stacktop - pthread_get_stacksize_np(self);
-
-	*nb = 0;
-
-	/* make sure return address is never out of bounds */
-	stacktop -= (FP_LINK_OFFSET + 1) * sizeof(void *);
-
-	frame = __builtin_frame_address(0);
-	if(!INSTACK(frame) || !ISALIGNED(frame))
-		return;
-	while ((startfp && startfp >= *(void **)frame) || skip--) {
-		next = *(void **)frame;
-		if(!INSTACK(next) || !ISALIGNED(next) || next <= frame)
-			return;
-		frame = next;
-	}
-	while (max--) {
-		void *retaddr = (void *)*(vm_address_t *)
-				(((void **)frame) + FP_LINK_OFFSET);
-#pragma clang diagnostic push
-#pragma clang diagnostic ignored "-Wint-conversion"
-		buffer[*nb] = retaddr;
-#pragma clang diagnostic pop
-		(*nb)++;
-		next = *(void **)frame;
-		if(!INSTACK(next) || !ISALIGNED(next) || next <= frame)
-			return;
-		frame = next;
-	}
-}
-
-// Prevent thread_stack_pcs() from getting tail-call-optimized into
-// _thread_stack_pcs() on 64-bit environments, thus making the "number of hot
-// frames to skip" be more predictable, giving more consistent backtraces.
-//
-// See <rdar://problem/5364825> "stack logging: frames keep getting truncated"
-// for why this is necessary.
-__attribute__((disable_tail_calls))
-void
-thread_stack_pcs(vm_address_t *buffer, unsigned max, unsigned *nb)
-{
-	_thread_stack_pcs(buffer, max, nb, 0, NULL);
-}