85 lines
2.1 KiB
C
85 lines
2.1 KiB
C
/*
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* Copyright 2011 Stefan Lankes, Chair for Operating Systems,
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* RWTH Aachen University
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*
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* This file is part of MetalSVM.
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*/
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/**
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* @author Stefan Lankes
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* @file include/metalsvm/vma.h
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* @brief VMA related sructure and functions
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*/
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#ifndef __VMA_H__
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#define __VMA_H__
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#include <metalsvm/stddef.h>
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#ifdef __cplusplus
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extern "C" {
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#endif
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#define VMA_READ (1 << 0)
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#define VMA_WRITE (1 << 1)
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#define VMA_EXECUTE (1 << 2)
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#define VMA_CACHEABLE (1 << 3)
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#define VMA_NOACCESS (1 << 4)
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struct vma;
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/** @brief VMA structure definition */
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typedef struct vma {
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/// Start address of the memory area
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size_t start;
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/// End address of the memory area
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size_t end;
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/// Type flags field
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uint32_t type;
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/// Pointer of next VMA element in the list
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struct vma* next;
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/// Pointer to previous VMA element in the list
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struct vma* prev;
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} vma_t;
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/** @brief Add a new virtual memory region to the list of VMAs
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*
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* @param task Pointer to the task_t structure of the task
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* @param start Start address of the new region
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* @param end End address of the new region
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* @param type Type flags the new region shall have
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*
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* @return
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* - 0 on success
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* - -EINVAL (-22) or -EINVAL (-12) on failure
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*/
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int vma_add(struct task* task, size_t start, size_t end, uint32_t type);
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/** @brief Dump information about this task's VMAs into the terminal.
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*
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* This will print out Start, end and flags for each VMA in the task's list
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*
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* @param task The task's task_t structure
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* @return
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* - 0 on success
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* - -EINVAL (-22) on failure
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*/
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int vma_dump(struct task* task);
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#ifdef __cplusplus
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}
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#endif
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#endif
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