libc: remove some dead code from freebsd crt0

lib/libc/freebsd/lib/csu/common/crtbegin.c

@@ -41,9 +41,8 @@ void __cxa_finalize(void *) __weak_symbol;
  * When we have ctors/dtors call from the dtor handler before calling
  * any dtors, otherwise use a destructor.
  */
-#ifndef HAVE_CTORS
+/* zig patch: no HAVE_CTORS */
 __attribute__((destructor))
-#endif
 static void
 run_cxa_finalize(void)
 {
@@ -53,43 +52,6 @@ run_cxa_finalize(void)
 }
 #endif
 
-/*
+/* zig patch: no HAVE_CTORS */
- * On some architectures and toolchains we may need to call the .dtors.
- * These are called in the order they are in the ELF file.
- */
-#ifdef HAVE_CTORS
-static void __do_global_dtors_aux(void) __used;
-
-static crt_func __CTOR_LIST__[] __section(".ctors") __used = {
-	(crt_func)-1
-};
-static crt_func __DTOR_LIST__[] __section(".dtors") __used = {
-	(crt_func)-1
-};
-
-static void
-__do_global_dtors_aux(void)
-{
-	crt_func fn;
-	int n;
-
-#ifdef SHARED
-	run_cxa_finalize();
-#endif
-
-	for (n = 1;; n++) {
-		fn = __DTOR_LIST__[n];
-		if (fn == (crt_func)0 || fn == (crt_func)-1)
-			break;
-		fn();
-	}
-}
-
-asm (
-    ".pushsection .fini		\n"
-    "\t" INIT_CALL_SEQ(__do_global_dtors_aux) "\n"
-    ".popsection		\n"
-);
-#endif
 
 /* zig patch: remove gcj nonsense */

lib/libc/freebsd/lib/csu/common/crtend.c

@@ -1,65 +0,0 @@
-/*-
- * SPDX-License-Identifier: BSD-1-Clause
- *
- * Copyright 2018 Andrew Turner
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions
- * are met:
- * 1. Redistributions of source code must retain the above copyright
- *    notice, this list of conditions and the following disclaimer.
- *
- * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
- * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
- * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
- * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
- * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
- * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
- * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
- * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
- * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
- * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
- */
-
-#include <sys/cdefs.h>
-#include "crt.h"
-
-typedef void (*crt_func)(void);
-
-/* zig patch: remove gcj nonsense */
-
-#ifdef HAVE_CTORS
-
-/*
- * On some architectures and toolchains we may need to call the .ctors.
- * These are called in the reverse order they are in the ELF file.
- */
-static void __do_global_ctors_aux(void) __used;
-
-static crt_func __CTOR_END__[] __section(".ctors") __used = {
-	(crt_func)0
-};
-static crt_func __DTOR_END__[] __section(".dtors") __used = {
-	(crt_func)0
-};
-
-static void
-__do_global_ctors_aux(void)
-{
-	crt_func fn;
-	int n;
-
-	for (n = 1;; n++) {
-		fn = __CTOR_END__[-n];
-		if (fn == (crt_func)0 || fn == (crt_func)-1)
-			break;
-		fn();
-	}
-}
-
-asm (
-    ".pushsection .init		\n"
-    "\t" INIT_CALL_SEQ(__do_global_ctors_aux) "\n"
-    ".popsection		\n"
-);
-#endif

src/libs/freebsd.zig

@@ -139,10 +139,6 @@ pub fn buildCrtFile(comp: *Compilation, crt_file: CrtFile, prog_node: std.Progre
                     .path = "common" ++ path.sep_str ++ "crtbrand.S",
                     .flags = acflags.items,
                 },
-                .{
-                    .path = "common" ++ path.sep_str ++ "crtend.c",
-                    .flags = cflags.items,
-                },
                 .{
                     .path = "common" ++ path.sep_str ++ "feature_note.S",
                     .flags = acflags.items,