101 lines
3.7 KiB
C
101 lines
3.7 KiB
C
/*
|
||
StarForth — Steady-State Virtual Machine Runtime
|
||
|
||
Copyright (c) 2023–2025 Robert A. James
|
||
All rights reserved.
|
||
|
||
This file is part of the StarForth project.
|
||
|
||
Licensed under the StarForth License, Version 1.0 (the "License");
|
||
you may not use this file except in compliance with the License.
|
||
|
||
You may obtain a copy of the License at:
|
||
https://github.com/star.4th@proton.me/StarForth/LICENSE.txt
|
||
|
||
This 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.
|
||
|
||
See the License for the specific language governing permissions and
|
||
limitations under the License.
|
||
|
||
StarForth — Steady-State Virtual Machine Runtime
|
||
Copyright (c) 2023–2025 Robert A. James
|
||
All rights reserved.
|
||
|
||
This file is part of the StarForth project.
|
||
|
||
Licensed under the StarForth License, Version 1.0 (the "License");
|
||
you may not use this file except in compliance with the License.
|
||
|
||
You may obtain a copy of the License at:
|
||
https://github.com/star.4th@proton.me/StarForth/LICENSE.txt
|
||
|
||
This 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.
|
||
|
||
See the License for the specific language governing permissions and
|
||
limitations under the License.
|
||
|
||
*/
|
||
|
||
#ifndef STARFORTH_BLKIO_FACTORY_H
|
||
#define STARFORTH_BLKIO_FACTORY_H
|
||
|
||
/* -----------------------------------------------------------------------------
|
||
StarForth - Block I/O Factory (Public API)
|
||
Chooses FILE backend when a disk image path is provided; otherwise RAM.
|
||
No dynamic allocation; caller supplies backend state memory.
|
||
|
||
NOTE: This header avoids referencing blkio typedefs to prevent "unknown type"
|
||
errors when include order or local headers differ. We forward-declare only the
|
||
device struct here. The implementation includes "blkio.h".
|
||
----------------------------------------------------------------------------- */
|
||
|
||
#include <stddef.h>
|
||
#include <stdint.h>
|
||
|
||
#ifdef __cplusplus
|
||
extern "C" {
|
||
#endif
|
||
|
||
/* Forward declaration; real definition is in blkio.h */
|
||
struct blkio_dev;
|
||
|
||
/**
|
||
* Open a block device using either a file-backed image (if disk_img_path is
|
||
* non-empty) or a RAM-backed buffer (fallback).
|
||
*
|
||
* Parameters:
|
||
* - dev : output device object (caller-allocated)
|
||
* - disk_img_path : path to raw image; if NULL/empty => RAM fallback
|
||
* - read_only : 1 = open read-only; 0 = read/write
|
||
* - total_blocks : FILE: 0 => derive from file size; >0 => size hint
|
||
* RAM : must match ram_blocks
|
||
* - fbs : forth block size in bytes (0 => default per blkio.h)
|
||
* - state_mem : caller-provided backend state buffer (opaque to caller)
|
||
* - state_len : size of state_mem in bytes
|
||
* - ram_base : RAM storage base pointer (RAM backend only)
|
||
* - ram_blocks : number of Forth blocks in ram_base (RAM backend only)
|
||
* - out_used_file : optional; set to 1 if FILE backend selected, else 0
|
||
*
|
||
* Returns:
|
||
* 0 on success; negative blkio error code on failure.
|
||
*/
|
||
int blkio_factory_open(struct blkio_dev *dev,
|
||
const char *disk_img_path,
|
||
uint8_t read_only,
|
||
uint32_t total_blocks,
|
||
uint32_t fbs,
|
||
void *state_mem,
|
||
size_t state_len,
|
||
uint8_t *ram_base,
|
||
uint32_t ram_blocks,
|
||
uint8_t *out_used_file);
|
||
|
||
#ifdef __cplusplus
|
||
} /* extern "C" */
|
||
#endif
|
||
|
||
#endif /* STARFORTH_BLKIO_FACTORY_H */ |