0a2d5a4e90
1. elfloader for shared object example: TencentOS-tiny\examples\elfloader_shared_object keil: TencentOS-tiny\board\TencentOS_tiny_EVB_MX_Plus\KEIL\elfloader_shared_object 2. elfloader for relocatable object: example: TencentOS-tiny\examples\elfloader_relocatable_object keil: TencentOS-tiny\board\TencentOS_tiny_EVB_MX_Plus\KEIL\elfloader_relocatable_object 3. TODO: - add icache/dcache flush when module is loaded - support more relocation type in elfloader_arch_relocate
93 lines
2.5 KiB
C
93 lines
2.5 KiB
C
/*----------------------------------------------------------------------------
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* Tencent is pleased to support the open source community by making TencentOS
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* available.
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*
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* Copyright (C) 2019 THL A29 Limited, a Tencent company. All rights reserved.
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* If you have downloaded a copy of the TencentOS binary from Tencent, please
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* note that the TencentOS binary is licensed under the BSD 3-Clause License.
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*
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* If you have downloaded a copy of the TencentOS source code from Tencent,
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* please note that TencentOS source code is licensed under the BSD 3-Clause
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* License, except for the third-party components listed below which are
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* subject to different license terms. Your integration of TencentOS into your
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* own projects may require compliance with the BSD 3-Clause License, as well
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* as the other licenses applicable to the third-party components included
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* within TencentOS.
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*---------------------------------------------------------------------------*/
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#include "tos_vfs.h"
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__STATIC__ vfs_file_t vfs_file_pool[VFS_FILE_OPEN_MAX] = { { K_NULL, 0 } };
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__KNL__ vfs_file_t *vfs_fd2file(int fd)
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{
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if (unlikely(fd < 0 || fd >= VFS_FILE_OPEN_MAX)) {
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return K_NULL;
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}
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return &vfs_file_pool[fd];
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}
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__KNL__ int vfs_file2fd(vfs_file_t *file)
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{
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if (unlikely((cpu_addr_t)file < (cpu_addr_t)&vfs_file_pool[0] ||
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(cpu_addr_t)file > (cpu_addr_t)&vfs_file_pool[VFS_FILE_OPEN_MAX - 1])) {
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return -1;
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}
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return (cpu_addr_t)file - (cpu_addr_t)&vfs_file_pool[0];
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}
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__KNL__ vfs_file_t *vfs_file_alloc(void)
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{
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int i = 0;
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vfs_file_t *file = K_NULL;
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for (; i < VFS_FILE_OPEN_MAX; ++i) {
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file = &vfs_file_pool[i];
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if (file->inode == K_NULL) {
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return file;
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}
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}
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return K_NULL;
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}
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__KNL__ void vfs_file_free(vfs_file_t *file)
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{
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if (vfs_file2fd(file) < 0) {
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return;
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}
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file->inode = K_NULL;
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file->pos = 0;
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}
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__KNL__ vfs_file_t *vfs_file_dup(vfs_file_t *old_file)
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{
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vfs_file_t *new_file = K_NULL;
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new_file = vfs_file_alloc();
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if (!new_file) {
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return K_NULL;
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}
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vfs_inode_refinc(old_file->inode);
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new_file->flags = old_file->flags;
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new_file->pos = old_file->pos;
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new_file->inode = old_file->inode;
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new_file->private = old_file->private;
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return new_file;
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}
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__KNL__ vfs_dir_t *vfs_dir_alloc(void)
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{
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return (vfs_dir_t *)tos_mmheap_calloc(1, sizeof(vfs_dir_t));
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}
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__KNL__ void vfs_dir_free(vfs_dir_t *dir)
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{
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tos_mmheap_free(dir);
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}
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