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https://github.com/linux-sunxi/sunxi-tools.git
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55eec70cea
The script_extractor tool before this commit used to take a size argument on the cmdline, but the passed in size was only used in some places not in others. Leading to a segfault if the passed in argument was not exactly the same as SCRIPT_SIZE. This commit drops the argument, so that script_extractor will just work. Signed-off-by: Hans de Goede <hdegoede@redhat.com>
43 lines
1.2 KiB
C
43 lines
1.2 KiB
C
/*
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* Copyright (C) 2015 Olliver Schinagl <oliver@schinagl.nl>
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*
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* This program is free software: you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation, either version 2 of the License, or
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* (at your option) any later version.
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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, see <http://www.gnu.org/licenses/>.
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*/
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#include <fcntl.h>
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#include <stdio.h>
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#include <stdlib.h>
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#include <sys/mman.h>
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#include <sys/stat.h>
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#include <sys/types.h>
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#include <unistd.h>
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#define SCRIPT_START 0x43000000
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#define SCRIPT_SIZE 0x20000
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int main(void) {
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char *addr;
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int fd;
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int i;
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fd = open("/dev/mem", O_RDONLY);
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addr = (char *)mmap(NULL, SCRIPT_SIZE, PROT_READ, MAP_SHARED, fd, SCRIPT_START);
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for (i = 0; i < SCRIPT_SIZE; i++)
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putchar(addr[i]);
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munmap(addr, SCRIPT_SIZE);
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close(fd);
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return 0;
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}
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