projects / apple / libsystem.git / blame
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|---|---|---|
| 3186893e A |
1 | /* |
| 2 | * Copyright (c) 2007, 2008, 2011-2013 Apple Inc. All rights reserved. | |
| 3 | * | |
| 4 | * @APPLE_OSREFERENCE_LICENSE_HEADER_START@ | |
| 5 | * | |
| 6 | * This file contains Original Code and/or Modifications of Original Code | |
| 7 | * as defined in and that are subject to the Apple Public Source License | |
| 8 | * Version 2.0 (the 'License'). You may not use this file except in | |
| 9 | * compliance with the License. The rights granted to you under the License | |
| 10 | * may not be used to create, or enable the creation or redistribution of, | |
| 11 | * unlawful or unlicensed copies of an Apple operating system, or to | |
| 12 | * circumvent, violate, or enable the circumvention or violation of, any | |
| 13 | * terms of an Apple operating system software license agreement. | |
| 14 | * | |
| 15 | * Please obtain a copy of the License at | |
| 16 | * http://www.opensource.apple.com/apsl/ and read it before using this file. | |
| 17 | * | |
| 18 | * The Original Code and all software distributed under the License are | |
| 19 | * distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER | |
| 20 | * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES, | |
| 21 | * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY, | |
| 22 | * FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT. | |
| 23 | * Please see the License for the specific language governing rights and | |
| 24 | * limitations under the License. | |
| 25 | * | |
| 26 | * @APPLE_OSREFERENCE_LICENSE_HEADER_END@ | |
| 27 | */ | |
| 28 | ||
| 29 | // This is the only C file compiled into Libsystem when building for i386. | |
| 30 | // We use EXCLUDED_ and INCLUDED_SOURCE_FILES in the xcconfig to accomplish | |
| 31 | // this. | |
| 32 | // | |
| 33 | // i386 is no longer a supported architecture for macOS. The kernel doesn’t run | |
| 34 | // i386 macOS executables. However, we cannot completely remove the i386 | |
| 35 | // slice from libSystem.B.dylib. In order to support the watchOS Simulator, | |
| 36 | // macOS includes several libraries with i386 slices. The watchOS Simulator | |
| 37 | // uses the i386 ISA with a different Mach-O platform and its own entire set | |
| 38 | // of system libraries. Some of those libraries (including those from the clang/ | |
| 39 | // llvm project) verify that the compiler works by compiling and linking a | |
| 40 | // simple executable. That would fail if Libsystem lacked an i386 slice. | |
| 41 | // So, we will preserve a vestigial i386 slice, but no executables can actually | |
| 42 | // use it to run. | |
| 43 | // rdar://problem/59703537 | |
| 44 | ||
| 45 | #include <TargetConditionals.h> | |
| 46 | ||
| 47 | #if !defined(__i386__) || !defined(TARGET_OS_OSX) || (TARGET_OS_OSX == 0) | |
| 48 | #error "This file should not be built for this environment" | |
| 49 | #endif // !defined(__i386__) || !defined(TARGET_OS_OSX) || (TARGET_OS_OSX == 0) | |
| 50 | ||
| 51 | #include <sys/reason.h> | |
| 52 | ||
| 53 | struct ProgramVars; | |
| 54 | ||
| 55 | __attribute__((constructor)) | |
| 56 | static void | |
| 57 | libSystem_initializer(int argc __attribute__((unused)), | |
| 58 | const char* argv[] __attribute__((unused)), | |
| 59 | const char* envp[] __attribute__((unused)), | |
| 60 | const char* apple[] __attribute__((unused)), | |
| 61 | const struct ProgramVars* vars __attribute__((unused))) | |
| 62 | { | |
| 63 | abort_with_reason(OS_REASON_LIBSYSTEM, 386, | |
| 64 | "i386 is not supported on macOS", | |
| 65 | OS_REASON_FLAG_CONSISTENT_FAILURE); | |
| 66 | } |