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annotate x86cpuid.c @ 10:3bfef1f22a97

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trivial changes to get rid of compile-time warnings
author Henry S. Thompson <ht@inf.ed.ac.uk>
date Fri, 31 Jan 2025 15:26:11 +0000
parents 2cb46628feec
children
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
rev   line source
0
2cb46628feec from cdb-0.75 per http://cr.yp.to/cdb.html,
Henry S. Thompson <ht@inf.ed.ac.uk>
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1 #include <signal.h>
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2
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3 void nope()
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4 {
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5 exit(1);
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6 }
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7
10
3bfef1f22a97 trivial changes to get rid of compile-time warnings
Henry S. Thompson <ht@inf.ed.ac.uk>
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8 int main()
0
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9 {
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10 unsigned long x[4];
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11 unsigned long y[4];
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12 int i;
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13 int j;
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14 char c;
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15
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16 signal(SIGILL,nope);
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17
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18 x[0] = 0;
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19 x[1] = 0;
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20 x[2] = 0;
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21 x[3] = 0;
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22
2cb46628feec from cdb-0.75 per http://cr.yp.to/cdb.html,
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23 asm volatile(".byte 15;.byte 162" : "=a"(x[0]),"=b"(x[1]),"=c"(x[3]),"=d"(x[2]) : "0"(0) );
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24 if (!x[0]) return 0;
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25 asm volatile(".byte 15;.byte 162" : "=a"(y[0]),"=b"(y[1]),"=c"(y[2]),"=d"(y[3]) : "0"(1) );
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26
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27 for (i = 1;i < 4;++i)
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28 for (j = 0;j < 4;++j) {
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29 c = x[i] >> (8 * j);
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30 if (c < 32) c = 32;
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31 if (c > 126) c = 126;
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32 putchar(c);
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33 }
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34
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35 printf("-%08x-%08x\n",y[0],y[3]);
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36
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37 return 0;
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38 }