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Added x86_64 paging and ELF loader

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This commit is contained in:
Jozef Nagy 2025-01-31 21:12:29 +01:00
parent 36ae3ec0b7
commit a39e30d17e
Signed by untrusted user who does not match committer: crz
GPG key ID: 459A4811CEAC7068
6 changed files with 309 additions and 4 deletions
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29
boot/include/lib/align.h Normal file
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/*********************************************************************************/
/* Module Name: align.h */
/* Project: AurixOS */
/* */
/* Copyright (c) 2024-2025 Jozef Nagy */
/* */
/* This source is subject to the MIT License. */
/* See License.txt in the root of this repository. */
/* All other rights reserved. */
/* */
/* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR */
/* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, */
/* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE */
/* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER */
/* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, */
/* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE */
/* SOFTWARE. */
/*********************************************************************************/
#ifndef _LIB_ALIGN_H
#define _LIB_ALIGN_H
#include <stdint.h>
#define DIV_ROUND_UP(x,y) (((uint64_t)(x) + ((uint64_t)(y) - 1)) / (uint64_t)(y))
#define ALIGN_UP(x,y) (DIV_ROUND_UP(x, y) * (uint64_t)(y))
#define ALIGN_DOWN(x,y) (((uint64_t)(x) / (uint64_t)(y)) * (uint64_t)(y))
#endif /* _LIB_ALIGN_H */

77
boot/include/loader/elf.h Normal file
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/*********************************************************************************/
/* Module Name: elf.h */
/* Project: AurixOS */
/* */
/* Copyright (c) 2024-2025 Jozef Nagy */
/* */
/* This source is subject to the MIT License. */
/* See License.txt in the root of this repository. */
/* All other rights reserved. */
/* */
/* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR */
/* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, */
/* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE */
/* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER */
/* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, */
/* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE */
/* SOFTWARE. */
/*********************************************************************************/
#ifndef _LOADER_ELF_H
#define _LOADER_ELF_H
#include <stdint.h>
//#include <stddef.h>
#define ELF_MAGIC 0x464C457F
struct elf_header {
uint32_t e_magic;
uint8_t e_class;
uint8_t e_data;
uint8_t e_version;
uint8_t e_osabi;
uint8_t e_abiversion;
uint8_t e_pad[7];
uint16_t e_type;
uint16_t e_machine;
uint32_t e_version2;
uint64_t e_entry;
uint64_t e_phoff;
uint64_t e_shoff;
uint32_t e_flags;
uint16_t e_ehsize;
uint16_t e_phentsize;
uint16_t e_phnum;
uint16_t e_shentsize;
uint16_t e_shnum;
uint16_t e_shstrndx;
} __attribute__((packed));
struct elf_program_header {
uint32_t p_type;
uint32_t p_flags;
uint64_t p_offset;
uint64_t p_vaddr;
uint64_t p_paddr;
uint64_t p_filesz;
uint64_t p_memsz;
uint64_t p_align;
} __attribute__((packed));
#define PT_NULL 0
#define PT_LOAD 1
#define PT_DYNAMIC 2
#define PT_INTERP 3
#define PT_NOTE 4
#define PT_SHLIB 5
#define PT_PHDR 6
#define PT_TLS 7
#define PF_X 0x1
#define PF_W 0x2
#define PF_R 0x4
uint64_t elf_load(char *kernel, uintptr_t *pagemap);
#endif /* _LOADER_ELF_H */

35
boot/include/mm/vmm.h Normal file
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/*********************************************************************************/
/* Module Name: vmm.h */
/* Project: AurixOS */
/* */
/* Copyright (c) 2024-2025 Jozef Nagy */
/* */
/* This source is subject to the MIT License. */
/* See License.txt in the root of this repository. */
/* All other rights reserved. */
/* */
/* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR */
/* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, */
/* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE */
/* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER */
/* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, */
/* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE */
/* SOFTWARE. */
/*********************************************************************************/
#ifndef _MM_VMM_H
#define _MM_VMM_H
#include <arch/mm/paging.h>
#include <stdint.h>
#define VMM_PRESENT 1
#define VMM_WRITABLE 2
#define VMM_NX (1ull << 63)
#define VMM_USER 4
uintptr_t *create_pagemap(void);
void map_page(uintptr_t *pm, uintptr_t virt, uintptr_t phys, uint64_t flags);
#endif /* _MM_VMM_H */