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/*
* Copyright (C) 2009 coresystems GmbH
* written by Patrick Georgi <patrick.georgi@coresystems.de>
* Copyright (C) 2012 Google, Inc.
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; version 2 of the License.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc.
*/
#ifndef __CBFSTOOL_COMMON_H
#define __CBFSTOOL_COMMON_H
#include <stdbool.h>
#include <stddef.h>
#include <stdint.h>
#include <string.h>
#include <assert.h>
/* Endianess */
#include "swab.h"
/* Message output */
extern int verbose;
#define ERROR(...) { fprintf(stderr, "E: " __VA_ARGS__); }
#define WARN(...) { fprintf(stderr, "W: " __VA_ARGS__); }
#define LOG(...) { fprintf(stderr, __VA_ARGS__); }
#define INFO(...) { if (verbose > 0) fprintf(stderr, "INFO: " __VA_ARGS__); }
#define DEBUG(...) { if (verbose > 1) fprintf(stderr, "DEBUG: " __VA_ARGS__); }
/* Helpers */
#define ARRAY_SIZE(a) (int)(sizeof(a) / sizeof((a)[0]))
#define ALIGN(val, by) (((val) + (by)-1)&~((by)-1))
#define MAX(x, y) ((x) > (y) ? (x) : (y))
#define MIN(x, y) ((x) < (y) ? (x) : (y))
#define IS_TOP_ALIGNED_ADDRESS(x) ((uint32_t)(x) > 0x80000000)
#define unused __attribute__((unused))
static inline uint32_t align_up(uint32_t value, uint32_t align)
{
if (value % align)
value += align - (value % align);
return value;
}
/* Buffer and file I/O */
struct buffer {
char *name;
char *data;
size_t offset;
size_t size;
};
static inline void *buffer_get(const struct buffer *b)
{
return b->data;
}
static inline size_t buffer_size(const struct buffer *b)
{
return b->size;
}
/*
* Shrink a buffer toward the beginning of its previous space.
* Afterward, buffer_delete() remains the means of cleaning it up. */
static inline void buffer_set_size(struct buffer *b, size_t size)
{
b->size = size;
}
/* Initialize a buffer with the given constraints. */
static inline void buffer_init(struct buffer *b, char *name, void *data,
size_t size)
{
b->name = name;
b->data = data;
b->size = size;
}
/* Splice a buffer into another buffer. Note that it's up to the caller to
* bounds check the offset and size. The resulting buffer is backed by the same
* storage as the original, so although it is valid to buffer_delete() either
* one of them, doing so releases both simultaneously. */
static inline void buffer_splice(struct buffer *dest, const struct buffer *src,
size_t offset, size_t size)
{
dest->name = src->name;
dest->data = src->data + offset;
dest->offset = src->offset + offset;
dest->size = size;
}
/*
* Shallow copy a buffer. To clean up the resources, buffer_delete()
* either one, but not both. */
static inline void buffer_clone(struct buffer *dest, const struct buffer *src)
{
buffer_splice(dest, src, 0, src->size);
}
/*
* Shrink a buffer toward the end of its previous space.
* Afterward, buffer_delete() remains the means of cleaning it up. */
static inline void buffer_seek(struct buffer *b, size_t size)
{
b->offset += size;
b->size -= size;
b->data += size;
}
/* Returns whether the buffer begins with the specified magic bytes. */
static inline bool buffer_check_magic(const struct buffer *b, const char *magic,
size_t magic_len)
{
assert(magic);
return b && b->size >= magic_len &&
memcmp(b->data, magic, magic_len) == 0;
}
/* Creates an empty memory buffer with given size.
* Returns 0 on success, otherwise non-zero. */
int buffer_create(struct buffer *buffer, size_t size, const char *name);
/* Loads a file into memory buffer. Returns 0 on success, otherwise non-zero. */
int buffer_from_file(struct buffer *buffer, const char *filename);
/* Writes memory buffer content into file.
* Returns 0 on success, otherwise non-zero. */
int buffer_write_file(struct buffer *buffer, const char *filename);
/* Destroys a memory buffer. */
void buffer_delete(struct buffer *buffer);
const char *arch_to_string(uint32_t a);
uint32_t string_to_arch(const char *arch_string);
/* Compress in_len bytes from in, storing the result at out, returning the
* resulting length in out_len.
* Returns 0 on error,
* != 0 otherwise, depending on the compressing function.
*/
typedef int (*comp_func_ptr) (char *in, int in_len, char *out, int *out_len);
/* Decompress in_len bytes from in, storing the result at out, up to out_len
* bytes.
* Returns 0 on error,
* != 0 otherwise, depending on the decompressing function.
*/
typedef int (*decomp_func_ptr) (char *in, int in_len, char *out, int out_len);
enum comp_algo { CBFS_COMPRESS_NONE = 0, CBFS_COMPRESS_LZMA = 1 };
comp_func_ptr compression_function(enum comp_algo algo);
decomp_func_ptr decompression_function(enum comp_algo algo);
uint64_t intfiletype(const char *name);
/* cbfs-mkpayload.c */
int parse_elf_to_payload(const struct buffer *input, struct buffer *output,
enum comp_algo algo);
int parse_fv_to_payload(const struct buffer *input, struct buffer *output,
enum comp_algo algo);
int parse_bzImage_to_payload(const struct buffer *input,
struct buffer *output, const char *initrd,
char *cmdline, enum comp_algo algo);
int parse_flat_binary_to_payload(const struct buffer *input,
struct buffer *output,
uint32_t loadaddress,
uint32_t entrypoint,
enum comp_algo algo);
/* cbfs-mkstage.c */
int parse_elf_to_stage(const struct buffer *input, struct buffer *output,
enum comp_algo algo, uint32_t *location,
const char *ignore_section);
void print_supported_filetypes(void);
/* lzma/lzma.c */
int do_lzma_compress(char *in, int in_len, char *out, int *out_len);
int do_lzma_uncompress(char *dst, int dst_len, char *src, int src_len);
/* xdr.c */
struct xdr {
uint8_t (*get8)(struct buffer *input);
uint16_t (*get16)(struct buffer *input);
uint32_t (*get32)(struct buffer *input);
uint64_t (*get64)(struct buffer *input);
void (*put8)(struct buffer *input, uint8_t val);
void (*put16)(struct buffer *input, uint16_t val);
void (*put32)(struct buffer *input, uint32_t val);
void (*put64)(struct buffer *input, uint64_t val);
};
extern struct xdr xdr_le, xdr_be;
size_t bgets(struct buffer *input, void *output, size_t len);
size_t bputs(struct buffer *b, const void *data, size_t len);
#endif
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