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