/**
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* Copyright (C) 2005 Stelian Pop
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*
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* Xenomai is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License as
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* published by the Free Software Foundation, Inc., 675 Mass Ave,
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* Cambridge MA 02139, USA; either version 2 of the License, or (at
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* your option) any later version.
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*
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* Xenomai is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA
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* 02111-1307, USA.
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*/
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#include <linux/mm.h>
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#include <asm/xenomai/machine.h>
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static void mach_arm_prefault(struct vm_area_struct *vma)
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{
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unsigned long addr;
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unsigned int flags;
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if ((vma->vm_flags & VM_MAYREAD)) {
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flags = (vma->vm_flags & VM_MAYWRITE) ? FAULT_FLAG_WRITE : 0;
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for (addr = vma->vm_start;
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addr != vma->vm_end; addr += PAGE_SIZE)
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#if LINUX_VERSION_CODE < KERNEL_VERSION(4,8,0)
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handle_mm_fault(vma->vm_mm, vma, addr, flags);
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#else
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handle_mm_fault(vma, addr, flags);
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#endif
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}
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}
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static const char *const fault_labels[] = {
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[IPIPE_TRAP_ACCESS] = "Data or instruction access",
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[IPIPE_TRAP_SECTION] = "Section fault",
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[IPIPE_TRAP_DABT] = "Generic data abort",
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[IPIPE_TRAP_UNKNOWN] = "Unknown exception",
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[IPIPE_TRAP_BREAK] = "Instruction breakpoint",
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[IPIPE_TRAP_FPU] = "Floating point exception",
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[IPIPE_TRAP_VFP] = "VFP Floating point exception",
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[IPIPE_TRAP_UNDEFINSTR] = "Undefined instruction",
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#ifdef IPIPE_TRAP_ALIGNMENT
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[IPIPE_TRAP_ALIGNMENT] = "Unaligned access exception",
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#endif /* IPIPE_TRAP_ALIGNMENT */
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[IPIPE_NR_FAULTS] = NULL
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};
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struct cobalt_machine cobalt_machine = {
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.name = "arm",
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.init = NULL,
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.late_init = NULL,
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.cleanup = NULL,
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.prefault = mach_arm_prefault,
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.fault_labels = fault_labels,
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};
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