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1 | #include <stdio.h> |
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2 | #include <stdlib.h> |
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3 | #include <sys/types.h> |
4 | #include <sys/stat.h> |
5 | #include <fcntl.h> |
6 | #include <sys/mman.h> |
7 | |
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8 | int main(int argc, char *argv[]) |
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9 | { |
10 | volatile void *memregs; |
11 | int memdev; |
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12 | int i; |
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13 | |
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14 | printf("hi, home=%s\n", getenv("HOME")); |
15 | |
16 | for (i = 0; i < argc; i++) |
17 | printf("%d \"%s\"\n", i, argv[i]); |
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18 | |
19 | memdev = open("/dev/mem", O_RDWR); |
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20 | if (memdev < 0) { |
21 | perror("open"); |
22 | return 1; |
23 | } |
24 | |
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25 | memregs = mmap(NULL, 0x10000, PROT_READ|PROT_WRITE, MAP_SHARED, memdev, 0xc0000000); |
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26 | |
27 | for (i = 0; i < 2; i++) |
28 | printf("%02x %04x %08x\n", ((char *)memregs)[0x2011], |
29 | ((short *)memregs)[0x1198/2], ((int *)memregs)[0xbcdc/4]); |
30 | |
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31 | //sleep(1000); |
32 | |
33 | return 0; |
34 | } |
35 | |