mirror of
https://codeberg.org/ziglang/zig.git
synced 2026-04-28 19:47:08 +03:00
Alex Rønne Petersen
66d97267c7
This excludes all headers in /usr/include/dev because that directory is bonkers huge (18M). We can add these on an as-needed basis.
106 lines
3.8 KiB
C
Vendored
106 lines
3.8 KiB
C
Vendored
/* $OpenBSD: param.h,v 1.25 2023/12/14 13:26:49 claudio Exp $ */
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/*
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* Copyright (c) 1994,1995 Mark Brinicombe.
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* 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 RiscBSD team.
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* 4. The name "RiscBSD" nor the name of the author may be used to
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* endorse or promote products derived from this software without specific
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* prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY RISCBSD ``AS IS'' AND ANY EXPRESS OR IMPLIED
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* WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
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* MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
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* IN NO EVENT SHALL RISCBSD OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT,
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* INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
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* (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
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* 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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#ifndef _ARM_PARAM_H_
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#define _ARM_PARAM_H_
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#define MACHINE_ARCH "arm"
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#define _MACHINE_ARCH arm
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#define MID_MACHINE MID_ARM6
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#define PAGE_SHIFT 12
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#define PAGE_SIZE (1 << PAGE_SHIFT)
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#define PAGE_MASK (PAGE_SIZE - 1)
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#ifdef _KERNEL
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#define NPTEPG (PAGE_SIZE/(sizeof (pt_entry_t)))
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#define NBPG PAGE_SIZE
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#define PGSHIFT PAGE_SHIFT
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#define PGOFSET PAGE_MASK
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#define UPAGES 2 /* pages of u-area */
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#define USPACE (UPAGES * PAGE_SIZE) /* total size of u-area */
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#define USPACE_ALIGN 0 /* u-area alignment 0-none */
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#define NMBCLUSTERS (32 * 1024) /* max cluster allocation */
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/* Constants used to divide the USPACE area */
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/*
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* The USPACE area contains :
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* 1. the user structure for the process
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* 2. the fp context for FP emulation
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* 3. the kernel (svc) stack
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* 4. the undefined instruction stack
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*
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* The layout of the area looks like this
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*
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* | user area | FP context | undefined stack | kernel stack |
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*
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* The size of the user area is known.
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* The size of the FP context is variable depending of the FP emulator
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* in use and whether there is hardware FP support. However we can put
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* an upper limit on it.
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* The undefined stack needs to be at least 512 bytes. This is a requirement
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* of the FP emulators
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* The kernel stack should be at least 4K in size.
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*
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* The stack top addresses are used to set the stack pointers. The stack bottom
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* addresses are the addresses monitored by the diagnostic code for stack
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* overflows.
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*/
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#define FPCONTEXTSIZE (0x100)
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#define USPACE_SVC_STACK_TOP (USPACE)
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#define USPACE_SVC_STACK_BOTTOM (USPACE_SVC_STACK_TOP - 0x1000)
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#define USPACE_UNDEF_STACK_TOP (USPACE_SVC_STACK_BOTTOM - 0x10)
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#define USPACE_UNDEF_STACK_BOTTOM (sizeof(struct user) + FPCONTEXTSIZE + 10)
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#ifndef _LOCORE
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void delay (unsigned);
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#define DELAY(x) delay(x)
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#endif
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#if !defined(_LOCORE)
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#include <machine/cpu.h>
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#endif
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/* ARM-specific macro to align a stack pointer (downwards). */
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#define STACKALIGNBYTES (8 - 1)
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#define STACKALIGN(p) ((u_long)(p) &~ STACKALIGNBYTES)
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#endif /* _KERNEL */
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#endif /* _ARM_PARAM_H_ */ |