semihost_loader.h

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/*
 * Copyright (c) 2026 Analog Devices, Inc.
 *
 * SPDX-License-Identifier: Apache-2.0
 */
 
#ifndef ZEPHYR_LLEXT_SEMIHOST_LOADER_H
#define ZEPHYR_LLEXT_SEMIHOST_LOADER_H
 
#include <zephyr/llext/loader.h>
 
#ifdef __cplusplus
extern "C" {
#endif


struct llext_semihost_loader {
        struct llext_loader loader;

        const char *filename;
        int fd;
        size_t total_bytes;
};

int llext_semihost_prepare(struct llext_loader *ldr);
int llext_semihost_read(struct llext_loader *ldr, void *buf, size_t len);
int llext_semihost_seek(struct llext_loader *ldr, size_t pos);
void llext_semihost_finalize(struct llext_loader *ldr);

#define LLEXT_SEMIHOST_LOADER(_filename)                                                           \
        {                                                                                          \
                .loader =                                                                          \
                        {                                                                          \
                                .prepare = llext_semihost_prepare,                                 \
                                .read = llext_semihost_read,                                       \
                                .seek = llext_semihost_seek,                                       \
                                .peek = NULL,                                                      \
                                .finalize = llext_semihost_finalize,                               \
                                .storage = LLEXT_STORAGE_TEMPORARY,                                \
                        },                                                                         \
                .filename = (_filename),                                                           \
                .fd = -1,                                                                          \
        }

 
#ifdef __cplusplus
}
#endif
 
#endif /* ZEPHYR_LLEXT_SEMIHOST_LOADER_H */