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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.
151 lines
5.6 KiB
C
Vendored
151 lines
5.6 KiB
C
Vendored
/*
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* Copyright (c) 2000-2010 Apple Inc. All rights reserved.
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*/
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/*-
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* Copyright (c) 1990, 1993
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* The Regents of the University of California. All rights reserved.
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* (c) UNIX System Laboratories, Inc.
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* All or some portions of this file are derived from material licensed
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* to the University of California by American Telephone and Telegraph
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* Co. or Unix System Laboratories, Inc. and are reproduced herein with
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* the permission of UNIX System Laboratories, Inc.
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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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* @(#)param.h 8.1 (Berkeley) 4/4/95
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*/
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/*
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* Machine dependent constants for ARM
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*/
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#ifndef _ARM_PARAM_H_
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#define _ARM_PARAM_H_
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#if defined (__arm__) || defined (__arm64__)
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#include <arm/_param.h>
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/*
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* Round p (pointer or byte index) up to a correctly-aligned value for all
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* data types (int, long, ...). The result is unsigned int and must be
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* cast to any desired pointer type.
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*/
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#define ALIGNBYTES __DARWIN_ALIGNBYTES
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#define ALIGN(p) __DARWIN_ALIGN(p)
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#define NBPG 4096 /* bytes/page */
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#define PGOFSET (NBPG-1) /* byte offset into page */
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#define PGSHIFT 12 /* LOG2(NBPG) */
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#define DEV_BSIZE 512
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#define DEV_BSHIFT 9 /* log2(DEV_BSIZE) */
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#define BLKDEV_IOSIZE 2048
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#define MAXPHYS (64 * 1024) /* max raw I/O transfer size */
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#define CLSIZE 1
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#define CLSIZELOG2 0
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/*
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* Constants related to network buffer management.
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* MCLBYTES must be no larger than CLBYTES (the software page size), and,
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* on machines that exchange pages of input or output buffers with mbuf
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* clusters (MAPPED_MBUFS), MCLBYTES must also be an integral multiple
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* of the hardware page size.
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*/
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#define MSIZESHIFT 8 /* 256 */
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#define MSIZE (1 << MSIZESHIFT) /* size of an mbuf */
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#define MCLSHIFT 11 /* 2048 */
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#define MCLBYTES (1 << MCLSHIFT) /* size of an mbuf cluster */
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#define MBIGCLSHIFT 12 /* 4096 */
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#define MBIGCLBYTES (1 << MBIGCLSHIFT) /* size of a big cluster */
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#define M16KCLSHIFT 14 /* 16384 */
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#define M16KCLBYTES (1 << M16KCLSHIFT) /* size of a jumbo cluster */
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#define MCLOFSET (MCLBYTES - 1)
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#ifndef NMBCLUSTERS
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#define NMBCLUSTERS CONFIG_NMBCLUSTERS /* cl map size */
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#endif
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/*
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* Some macros for units conversion
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*/
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/* Core clicks (NeXT_page_size bytes) to segments and vice versa */
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#define ctos(x) (x)
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#define stoc(x) (x)
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/* Core clicks (4096 bytes) to disk blocks */
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#define ctod(x) ((x)<<(PGSHIFT-DEV_BSHIFT))
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#define dtoc(x) ((x)>>(PGSHIFT-DEV_BSHIFT))
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#define dtob(x) ((x)<<DEV_BSHIFT)
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/* clicks to bytes */
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#define ctob(x) ((x)<<PGSHIFT)
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/* bytes to clicks */
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#define btoc(x) (((unsigned)(x)+(NBPG-1))>>PGSHIFT)
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#ifdef __APPLE__
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#define btodb(bytes, devBlockSize) \
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((unsigned)(bytes) / devBlockSize)
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#define dbtob(db, devBlockSize) \
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((unsigned)(db) * devBlockSize)
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#else
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#define btodb(bytes) /* calculates (bytes / DEV_BSIZE) */ \
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((unsigned)(bytes) >> DEV_BSHIFT)
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#define dbtob(db) /* calculates (db * DEV_BSIZE) */ \
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((unsigned)(db) << DEV_BSHIFT)
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#endif
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/*
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* Map a ``block device block'' to a file system block.
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* This should be device dependent, and will be if we
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* add an entry to cdevsw/bdevsw for that purpose.
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* For now though just use DEV_BSIZE.
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*/
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#define bdbtofsb(bn) ((bn) / (BLKDEV_IOSIZE/DEV_BSIZE))
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/*
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* Macros to decode (and encode) processor status word.
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*/
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#define STATUS_WORD(rpl, ipl) (((ipl) << 8) | (rpl))
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#define USERMODE(x) (((x) & 3) == 3)
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#define BASEPRI(x) (((x) & (255 << 8)) == 0)
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#if defined(KERNEL) || defined(STANDALONE)
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#define DELAY(n) delay(n)
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#else /* defined(KERNEL) || defined(STANDALONE) */
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#define DELAY(n) { int N = (n); while (--N > 0); }
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#endif /* defined(KERNEL) || defined(STANDALONE) */
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#endif /* defined (__arm__) || defined (__arm64__) */
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#endif /* _ARM_PARAM_H_ */ |