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// SPDX-License-Identifier: GPL-2.0-only
/* ----------------------------------------------------------------------- *
*
* Copyright (C) 2009 Intel Corporation. All rights reserved.
*
* H. Peter Anvin <hpa@linux.intel.com>
*
* -----------------------------------------------------------------------
*
* Outputs a small assembly wrapper with the appropriate symbols defined.
*/
#include <stdlib.h>
#include <stdio.h>
#include <string.h>
#include <inttypes.h>
#include <tools/le_byteshift.h>
int main(int argc, char *argv[])
{
uint32_t olen;
long ilen;
FILE *f = NULL;
int retval = 1;
if (argc < 2) {
fprintf(stderr, "Usage: %s compressed_file\n", argv[0]);
goto bail;
}
/* Get the information for the compressed kernel image first */
f = fopen(argv[1], "r");
if (!f) {
perror(argv[1]);
goto bail;
}
if (fseek(f, -4L, SEEK_END)) {
perror(argv[1]);
}
if (fread(&olen, sizeof(olen), 1, f) != 1) {
perror(argv[1]);
goto bail;
}
ilen = ftell(f);
olen = get_unaligned_le32(&olen);
printf(".section \".rodata..compressed\",\"a\",@progbits\n");
printf(".globl z_input_len\n");
printf("z_input_len = %lu\n", ilen);
printf(".globl z_output_len\n");
printf("z_output_len = %lu\n", (unsigned long)olen);
printf(".globl input_data, input_data_end\n");
printf("input_data:\n");
printf(".incbin \"%s\"\n", argv[1]);
printf("input_data_end:\n");
printf(".section \".rodata\",\"a\",@progbits\n");
printf(".globl input_len\n");
printf("input_len:\n\t.long %lu\n", ilen);
printf(".globl output_len\n");
printf("output_len:\n\t.long %lu\n", (unsigned long)olen);
retval = 0;
bail:
if (f)
fclose(f);
return retval;
}
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