61bbe53c2d
For userland, MACHINE_ARCH reflects the current ABI via preprocessor directives. For the kernel, the hw.machine_arch sysctl uses the ELF header flags of the current process to select the correct MACHINE_ARCH value. Reviewed by: imp, kp Sponsored by: DARPA Differential Revision: https://reviews.freebsd.org/D24543
118 lines
3.6 KiB
C
118 lines
3.6 KiB
C
/*-
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* Copyright (c) 1990 The Regents of the University of California.
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* All rights reserved.
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*
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* This code is derived from software contributed to Berkeley by
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* William Jolitz.
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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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*
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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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* from: @(#)param.h 5.8 (Berkeley) 6/28/91
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* $FreeBSD$
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*/
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#ifndef _MACHINE_PARAM_H_
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#define _MACHINE_PARAM_H_
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/*
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* Machine dependent constants for RISC-V.
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*/
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#include <machine/_align.h>
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#define STACKALIGNBYTES (16 - 1)
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#define STACKALIGN(p) ((uint64_t)(p) & ~STACKALIGNBYTES)
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#ifndef MACHINE
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#define MACHINE "riscv"
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#endif
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#ifndef MACHINE_ARCH
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/* Always use the hard-float arch for the kernel. */
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#if !defined(_KERNEL) && defined(__riscv_float_abi_soft)
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#define MACHINE_ARCH "riscv64sf"
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#else
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#define MACHINE_ARCH "riscv64"
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#endif
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#endif
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#ifdef _KERNEL
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#define MACHINE_ARCHES "riscv64 riscv64sf"
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#endif
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#ifdef SMP
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#ifndef MAXCPU
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#define MAXCPU 16
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#endif
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#else
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#define MAXCPU 1
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#endif
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#ifndef MAXMEMDOM
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#define MAXMEMDOM 1
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#endif
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#define ALIGNBYTES _ALIGNBYTES
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#define ALIGN(p) _ALIGN(p)
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/*
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* ALIGNED_POINTER is a boolean macro that checks whether an address
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* is valid to fetch data elements of type t from on this architecture.
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* This does not reflect the optimal alignment, just the possibility
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* (within reasonable limits).
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*/
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#define ALIGNED_POINTER(p, t) ((((u_long)(p)) & (sizeof(t) - 1)) == 0)
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/*
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* CACHE_LINE_SIZE is the compile-time maximum cache line size for an
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* architecture. It should be used with appropriate caution.
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*/
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#define CACHE_LINE_SHIFT 6
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#define CACHE_LINE_SIZE (1 << CACHE_LINE_SHIFT)
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#define PAGE_SHIFT 12
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#define PAGE_SIZE (1 << PAGE_SHIFT) /* Page size */
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#define PAGE_MASK (PAGE_SIZE - 1)
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#define MAXPAGESIZES 3 /* maximum number of supported page sizes */
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#ifndef KSTACK_PAGES
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#define KSTACK_PAGES 4 /* pages of kernel stack (with pcb) */
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#endif
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#define KSTACK_GUARD_PAGES 1 /* pages of kstack guard; 0 disables */
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#define PCPU_PAGES 1
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/*
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* Mach derived conversion macros
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*/
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#define round_page(x) (((unsigned long)(x) + PAGE_MASK) & ~PAGE_MASK)
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#define trunc_page(x) ((unsigned long)(x) & ~PAGE_MASK)
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#define atop(x) ((unsigned long)(x) >> PAGE_SHIFT)
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#define ptoa(x) ((unsigned long)(x) << PAGE_SHIFT)
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#define riscv_btop(x) ((unsigned long)(x) >> PAGE_SHIFT)
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#define riscv_ptob(x) ((unsigned long)(x) << PAGE_SHIFT)
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#define pgtok(x) ((unsigned long)(x) * (PAGE_SIZE / 1024))
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#endif /* !_MACHINE_PARAM_H_ */
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