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https://github.com/AuxXxilium/linux_dsm_epyc7002.git
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49449c30c4
Even though the resource is released when the application is closed or when returned from main function, modify the code to make it obvious, and to keep static analysis tools from complaining. Signed-off-by: Geyslan G. Bem <geyslan@gmail.com> Link: http://lkml.kernel.org/r/1381184219-10985-1-git-send-email-geyslan@gmail.com Signed-off-by: H. Peter Anvin <hpa@linux.intel.com>
100 lines
2.7 KiB
C
100 lines
2.7 KiB
C
/* ----------------------------------------------------------------------- *
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*
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* Copyright (C) 2009 Intel Corporation. All rights reserved.
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License version
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* 2 as published by the Free Software Foundation.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
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* 02110-1301, USA.
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*
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* H. Peter Anvin <hpa@linux.intel.com>
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*
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* ----------------------------------------------------------------------- */
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/*
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* Compute the desired load offset from a compressed program; outputs
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* 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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unsigned long offs;
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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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/*
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* Now we have the input (compressed) and output (uncompressed)
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* sizes, compute the necessary decompression offset...
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*/
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offs = (olen > ilen) ? olen - ilen : 0;
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offs += olen >> 12; /* Add 8 bytes for each 32K block */
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offs += 64*1024 + 128; /* Add 64K + 128 bytes slack */
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offs = (offs+4095) & ~4095; /* Round to a 4K boundary */
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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 z_extract_offset\n");
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printf("z_extract_offset = 0x%lx\n", offs);
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/* z_extract_offset_negative allows simplification of head_32.S */
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printf(".globl z_extract_offset_negative\n");
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printf("z_extract_offset_negative = -0x%lx\n", offs);
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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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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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