5f4177b47c
Some applications need to save LLEXT context, e.g. when suspending, to later restore it quickly without a full relinking. Add 2 functions for context saving and restoring. Since these functions are likely to change in the future, put them in llext_experimental.c, which depends on CONFIG_LLEXT_EXPERIMENTAL and is disabled by default. Signed-off-by: Guennadi Liakhovetski <guennadi.liakhovetski@linux.intel.com>
91 lines
1.9 KiB
C
91 lines
1.9 KiB
C
/*
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* Copyright (c) 2024 Arduino SA
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*
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* SPDX-License-Identifier: Apache-2.0
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*/
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#ifndef ZEPHYR_SUBSYS_LLEXT_PRIV_H_
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#define ZEPHYR_SUBSYS_LLEXT_PRIV_H_
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#include <zephyr/kernel.h>
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#include <zephyr/llext/llext.h>
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#include <zephyr/llext/llext_internal.h>
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#include <zephyr/sys/slist.h>
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/*
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* Global extension list
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*/
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extern sys_slist_t llext_list;
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extern struct k_mutex llext_lock;
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/*
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* Memory management (llext_mem.c)
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*/
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int llext_copy_strings(struct llext_loader *ldr, struct llext *ext,
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const struct llext_load_param *ldr_parm);
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int llext_copy_regions(struct llext_loader *ldr, struct llext *ext,
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const struct llext_load_param *ldr_parm);
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void llext_free_regions(struct llext *ext);
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void llext_adjust_mmu_permissions(struct llext *ext);
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static inline bool llext_heap_is_inited(void)
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{
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#ifdef CONFIG_LLEXT_HEAP_DYNAMIC
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extern bool llext_heap_inited;
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return llext_heap_inited;
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#else
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return true;
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#endif
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}
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static inline void *llext_alloc(size_t bytes)
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{
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extern struct k_heap llext_heap;
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if (!llext_heap_is_inited()) {
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return NULL;
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}
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return k_heap_alloc(&llext_heap, bytes, K_NO_WAIT);
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}
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static inline void *llext_aligned_alloc(size_t align, size_t bytes)
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{
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extern struct k_heap llext_heap;
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if (!llext_heap_is_inited()) {
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return NULL;
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}
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return k_heap_aligned_alloc(&llext_heap, align, bytes, K_NO_WAIT);
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}
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static inline void llext_free(void *ptr)
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{
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extern struct k_heap llext_heap;
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if (!llext_heap_is_inited()) {
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return;
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}
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k_heap_free(&llext_heap, ptr);
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}
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/*
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* ELF parsing (llext_load.c)
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*/
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int do_llext_load(struct llext_loader *ldr, struct llext *ext,
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const struct llext_load_param *ldr_parm);
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/*
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* Relocation (llext_link.c)
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*/
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int llext_link(struct llext_loader *ldr, struct llext *ext,
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const struct llext_load_param *ldr_parm);
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ssize_t llext_file_offset(struct llext_loader *ldr, uintptr_t offset);
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void llext_dependency_remove_all(struct llext *ext);
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#endif /* ZEPHYR_SUBSYS_LLEXT_PRIV_H_ */
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