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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; } |