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5b813f1a2a
Prior to this change we would assume the ABI for Apple targets to be GNU which could result in subtle errors in LLVM emitting calls to non-existent system libc provided functions such as `_sincosf` which is a GNU extension and as such is not provided by macOS for example. This would result in linker errors where the linker would not be able to find the said symbol in `libSystem.tbd`. With this change, we now correctly identify macOS (and other Apple platforms) as having ABI `unknown` which translates to unspecified in LLVM under-the-hood: ``` // main.ll target triple = "aarch64-unknown-macos-unknown" ``` Note however that we never suffix the target OS with target version such as `macos11` or `macos12` which means we fail to instruct LLVM of potential optimisations provided by the OS such as the availability of function `___sincosf_stret`. I suggest we investigate that in a follow-up commit.
165 lines
6.9 KiB
C
Vendored
165 lines
6.9 KiB
C
Vendored
/*
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* Copyright (c) 2006, 2010 Apple Inc. All rights reserved.
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*
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* @APPLE_LICENSE_HEADER_START@
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*
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* This file contains Original Code and/or Modifications of Original Code
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* as defined in and that are subject to the Apple Public Source License
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* Version 2.0 (the 'License'). You may not use this file except in
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* compliance with the License. Please obtain a copy of the License at
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* http://www.opensource.apple.com/apsl/ and read it before using this
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* file.
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*
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* The Original Code and all software distributed under the License are
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* distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER
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* EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
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* INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT.
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* Please see the License for the specific language governing rights and
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* limitations under the License.
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*
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* @APPLE_LICENSE_HEADER_END@
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*/
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#ifndef _SPAWN_H_
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#define _SPAWN_H_
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/*
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* [SPN] Support for _POSIX_SPAWN
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*/
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#include <sys/cdefs.h>
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#include <_types.h>
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#include <sys/spawn.h> /* shared types */
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#include <Availability.h>
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/*
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* [SPN] Inclusion of the <spawn.h> header may make visible symbols defined
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* in the <sched.h>, <signal.h>, and <sys/types.h> headers.
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*/
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#include <sys/_types/_pid_t.h>
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#include <sys/_types/_sigset_t.h>
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#include <sys/_types/_mode_t.h>
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/*
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* Opaque types for use with posix_spawn() family functions. Internals are
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* not defined, and should not be accessed directly. Types are defined as
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* mandated by POSIX.
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*/
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typedef void *posix_spawnattr_t;
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typedef void *posix_spawn_file_actions_t;
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__BEGIN_DECLS
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/*
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* gcc under c99 mode won't compile "[ __restrict]" by itself. As a workaround,
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* a dummy argument name is added.
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*/
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int posix_spawn(pid_t * __restrict, const char * __restrict,
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const posix_spawn_file_actions_t *,
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const posix_spawnattr_t * __restrict,
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char *const __argv[__restrict],
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char *const __envp[__restrict]) __API_AVAILABLE(macos(10.5), ios(2.0)) __API_UNAVAILABLE(watchos, tvos);
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int posix_spawnp(pid_t * __restrict, const char * __restrict,
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const posix_spawn_file_actions_t *,
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const posix_spawnattr_t * __restrict,
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char *const __argv[__restrict],
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char *const __envp[__restrict]) __API_AVAILABLE(macos(10.5), ios(2.0));
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int posix_spawn_file_actions_addclose(posix_spawn_file_actions_t *, int) __API_AVAILABLE(macos(10.5), ios(2.0)) __API_UNAVAILABLE(watchos, tvos);
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int posix_spawn_file_actions_adddup2(posix_spawn_file_actions_t *, int,
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int) __API_AVAILABLE(macos(10.5), ios(2.0)) __API_UNAVAILABLE(watchos, tvos);
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int posix_spawn_file_actions_addopen(
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posix_spawn_file_actions_t * __restrict, int,
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const char * __restrict, int, mode_t) __API_AVAILABLE(macos(10.5), ios(2.0)) __API_UNAVAILABLE(watchos, tvos);
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int posix_spawn_file_actions_destroy(posix_spawn_file_actions_t *) __API_AVAILABLE(macos(10.5), ios(2.0)) __API_UNAVAILABLE(watchos, tvos);
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int posix_spawn_file_actions_init(posix_spawn_file_actions_t *) __API_AVAILABLE(macos(10.5), ios(2.0)) __API_UNAVAILABLE(watchos, tvos);
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int posix_spawnattr_destroy(posix_spawnattr_t *) __API_AVAILABLE(macos(10.5), ios(2.0)) __API_UNAVAILABLE(watchos, tvos);
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int posix_spawnattr_getsigdefault(const posix_spawnattr_t * __restrict,
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sigset_t * __restrict) __API_AVAILABLE(macos(10.5), ios(2.0)) __API_UNAVAILABLE(watchos, tvos);
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int posix_spawnattr_getflags(const posix_spawnattr_t * __restrict,
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short * __restrict) __API_AVAILABLE(macos(10.5), ios(2.0)) __API_UNAVAILABLE(watchos, tvos);
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int posix_spawnattr_getpgroup(const posix_spawnattr_t * __restrict,
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pid_t * __restrict) __API_AVAILABLE(macos(10.5), ios(2.0)) __API_UNAVAILABLE(watchos, tvos);
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int posix_spawnattr_getsigmask(const posix_spawnattr_t * __restrict,
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sigset_t * __restrict) __API_AVAILABLE(macos(10.5), ios(2.0)) __API_UNAVAILABLE(watchos, tvos);
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int posix_spawnattr_init(posix_spawnattr_t *) __API_AVAILABLE(macos(10.5), ios(2.0)) __API_UNAVAILABLE(watchos, tvos);
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int posix_spawnattr_setsigdefault(posix_spawnattr_t * __restrict,
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const sigset_t * __restrict) __API_AVAILABLE(macos(10.5), ios(2.0)) __API_UNAVAILABLE(watchos, tvos);
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int posix_spawnattr_setflags(posix_spawnattr_t *, short) __API_AVAILABLE(macos(10.5), ios(2.0)) __API_UNAVAILABLE(watchos, tvos);
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int posix_spawnattr_setpgroup(posix_spawnattr_t *, pid_t) __API_AVAILABLE(macos(10.5), ios(2.0)) __API_UNAVAILABLE(watchos, tvos);
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int posix_spawnattr_setsigmask(posix_spawnattr_t * __restrict,
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const sigset_t * __restrict) __API_AVAILABLE(macos(10.5), ios(2.0)) __API_UNAVAILABLE(watchos, tvos);
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#if 0 /* _POSIX_PRIORITY_SCHEDULING [PS] : not supported */
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int posix_spawnattr_setschedparam(posix_spawnattr_t * __restrict,
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const struct sched_param * __restrict);
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int posix_spawnattr_setschedpolicy(posix_spawnattr_t *, int);
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int posix_spawnattr_getschedparam(const posix_spawnattr_t * __restrict,
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struct sched_param * __restrict);
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int posix_spawnattr_getschedpolicy(const posix_spawnattr_t * __restrict,
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int * __restrict);
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#endif /* 0 */
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__END_DECLS
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#if !defined(_POSIX_C_SOURCE) || defined(_DARWIN_C_SOURCE)
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/*
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* Darwin-specific extensions below
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*/
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#include <mach/exception_types.h>
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#include <mach/machine.h>
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#include <mach/port.h>
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#include <sys/_types/_size_t.h>
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__BEGIN_DECLS
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int posix_spawnattr_getbinpref_np(const posix_spawnattr_t * __restrict,
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size_t, cpu_type_t *__restrict, size_t *__restrict) __API_AVAILABLE(macos(10.5), ios(2.0)) __API_UNAVAILABLE(watchos, tvos);
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int posix_spawnattr_setauditsessionport_np(posix_spawnattr_t * __restrict,
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mach_port_t) __API_AVAILABLE(macos(10.6), ios(3.2));
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int posix_spawnattr_setbinpref_np(posix_spawnattr_t * __restrict,
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size_t, cpu_type_t *__restrict, size_t *__restrict) __API_AVAILABLE(macos(10.5), ios(2.0)) __API_UNAVAILABLE(watchos, tvos);
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int posix_spawnattr_setexceptionports_np(posix_spawnattr_t * __restrict,
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exception_mask_t, mach_port_t,
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exception_behavior_t, thread_state_flavor_t) __API_AVAILABLE(macos(10.5), ios(2.0)) __API_UNAVAILABLE(watchos, tvos);
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int posix_spawnattr_setspecialport_np(posix_spawnattr_t * __restrict,
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mach_port_t, int) __API_AVAILABLE(macos(10.5), ios(2.0)) __API_UNAVAILABLE(watchos, tvos);
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int posix_spawnattr_setsuidcredport_np(posix_spawnattr_t * __restrict, mach_port_t) __API_UNAVAILABLE(ios, macos);
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int posix_spawn_file_actions_addinherit_np(posix_spawn_file_actions_t *,
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int) __API_AVAILABLE(macos(10.7), ios(4.3)) __API_UNAVAILABLE(watchos, tvos);
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int posix_spawn_file_actions_addchdir_np(posix_spawn_file_actions_t *,
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const char * __restrict) __API_AVAILABLE(macos(10.15)) __API_UNAVAILABLE(ios, tvos, watchos);
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int posix_spawn_file_actions_addfchdir_np(posix_spawn_file_actions_t *,
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int) __API_AVAILABLE(macos(10.15)) __API_UNAVAILABLE(ios, tvos, watchos);
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__END_DECLS
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#endif /* (!_POSIX_C_SOURCE || _DARWIN_C_SOURCE) */
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#endif /* _SPAWN_H_ */ |