+/*
+ * Copyright (c) 2007, 2008, 2011-2013 Apple Inc. All rights reserved.
+ *
+ * @APPLE_OSREFERENCE_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. The rights granted to you under the License
+ * may not be used to create, or enable the creation or redistribution of,
+ * unlawful or unlicensed copies of an Apple operating system, or to
+ * circumvent, violate, or enable the circumvention or violation of, any
+ * terms of an Apple operating system software license agreement.
+ *
+ * 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_OSREFERENCE_LICENSE_HEADER_END@
+ */
+
+// This is the only C file compiled into Libsystem when building for i386.
+// We use EXCLUDED_ and INCLUDED_SOURCE_FILES in the xcconfig to accomplish
+// this.
+//
+// i386 is no longer a supported architecture for macOS. The kernel doesn’t run
+// i386 macOS executables. However, we cannot completely remove the i386
+// slice from libSystem.B.dylib. In order to support the watchOS Simulator,
+// macOS includes several libraries with i386 slices. The watchOS Simulator
+// uses the i386 ISA with a different Mach-O platform and its own entire set
+// of system libraries. Some of those libraries (including those from the clang/
+// llvm project) verify that the compiler works by compiling and linking a
+// simple executable. That would fail if Libsystem lacked an i386 slice.
+// So, we will preserve a vestigial i386 slice, but no executables can actually
+// use it to run.
+// rdar://problem/59703537
+
+#include <TargetConditionals.h>
+
+#if !defined(__i386__) || !defined(TARGET_OS_OSX) || (TARGET_OS_OSX == 0)
+#error "This file should not be built for this environment"
+#endif // !defined(__i386__) || !defined(TARGET_OS_OSX) || (TARGET_OS_OSX == 0)
+
+#include <sys/reason.h>
+
+struct ProgramVars;
+
+__attribute__((constructor))
+static void
+libSystem_initializer(int argc __attribute__((unused)),
+ const char* argv[] __attribute__((unused)),
+ const char* envp[] __attribute__((unused)),
+ const char* apple[] __attribute__((unused)),
+ const struct ProgramVars* vars __attribute__((unused)))
+{
+ abort_with_reason(OS_REASON_LIBSYSTEM, 386,
+ "i386 is not supported on macOS",
+ OS_REASON_FLAG_CONSISTENT_FAILURE);
+}
projects / apple / libsystem.git / commitdiff
