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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.
129 lines
5.3 KiB
C
Vendored
129 lines
5.3 KiB
C
Vendored
/*
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* Copyright (c) 2000 Apple Computer, 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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/*-
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* Copyright (c) 1991, 1993
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* The Regents of the University of California. All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. All advertising materials mentioning features or use of this software
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* must display the following acknowledgement:
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* This product includes software developed by the University of
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* California, Berkeley and its contributors.
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* 4. Neither the name of the University nor the names of its contributors
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* may be used to endorse or promote products derived from this software
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* without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*
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* @(#)signal.h 8.3 (Berkeley) 3/30/94
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*/
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#ifndef _USER_SIGNAL_H
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#define _USER_SIGNAL_H
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#include <sys/cdefs.h>
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#include <_types.h>
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#include <sys/signal.h>
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#include <sys/_pthread/_pthread_types.h>
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#include <sys/_pthread/_pthread_t.h>
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#if !defined(_ANSI_SOURCE) && (!defined(_POSIX_C_SOURCE) || defined(_DARWIN_C_SOURCE))
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extern __const char *__const sys_signame[NSIG];
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extern __const char *__const sys_siglist[NSIG];
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#endif
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__BEGIN_DECLS
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int raise(int);
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__END_DECLS
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#ifndef _ANSI_SOURCE
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__BEGIN_DECLS
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void (* _Nullable bsd_signal(int, void (* _Nullable)(int)))(int);
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int kill(pid_t, int) __DARWIN_ALIAS(kill);
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int killpg(pid_t, int) __DARWIN_ALIAS(killpg);
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int pthread_kill(pthread_t, int);
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int pthread_sigmask(int, const sigset_t *, sigset_t *) __DARWIN_ALIAS(pthread_sigmask);
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int sigaction(int, const struct sigaction * __restrict,
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struct sigaction * __restrict);
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int sigaddset(sigset_t *, int);
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int sigaltstack(const stack_t * __restrict, stack_t * __restrict) __DARWIN_ALIAS(sigaltstack) __WATCHOS_PROHIBITED __TVOS_PROHIBITED;
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int sigdelset(sigset_t *, int);
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int sigemptyset(sigset_t *);
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int sigfillset(sigset_t *);
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int sighold(int);
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int sigignore(int);
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int siginterrupt(int, int);
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int sigismember(const sigset_t *, int);
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int sigpause(int) __DARWIN_ALIAS_C(sigpause);
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int sigpending(sigset_t *);
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int sigprocmask(int, const sigset_t * __restrict, sigset_t * __restrict);
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int sigrelse(int);
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void (* _Nullable sigset(int, void (* _Nullable)(int)))(int);
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int sigsuspend(const sigset_t *) __DARWIN_ALIAS_C(sigsuspend);
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int sigwait(const sigset_t * __restrict, int * __restrict) __DARWIN_ALIAS_C(sigwait);
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#if !defined(_POSIX_C_SOURCE) || defined(_DARWIN_C_SOURCE)
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void psignal(unsigned int, const char *);
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int sigblock(int);
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int sigsetmask(int);
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int sigvec(int, struct sigvec *, struct sigvec *);
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#endif /* (!_POSIX_C_SOURCE || _DARWIN_C_SOURCE) */
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__END_DECLS
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/* List definitions after function declarations, or Reiser cpp gets upset. */
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#if defined(__i386__) || defined(__x86_64__)
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/* The left shift operator on intel is modulo 32 */
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__header_always_inline int
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__sigbits(int __signo)
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{
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return __signo > __DARWIN_NSIG ? 0 : (1 << (__signo - 1));
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}
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#else /* !__i386__ && !__x86_64__ */
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#define __sigbits(signo) (1 << ((signo) - 1))
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#endif /* __i386__ || __x86_64__ */
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#define sigaddset(set, signo) (*(set) |= __sigbits(signo), 0)
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#define sigdelset(set, signo) (*(set) &= ~__sigbits(signo), 0)
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#define sigismember(set, signo) ((*(set) & __sigbits(signo)) != 0)
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#define sigemptyset(set) (*(set) = 0, 0)
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#define sigfillset(set) (*(set) = ~(sigset_t)0, 0)
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#endif /* !_ANSI_SOURCE */
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#endif /* !_USER_SIGNAL_H */ |