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utils: add decode_cpuid_revision

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The Tumultuous Unicorn Of Darkness 2025-04-22 19:07:29 +02:00
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2 changed files with 33 additions and 1 deletions
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.gitignore vendored
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@ -37,7 +37,8 @@ ipch
libcpuid/x32 libcpuid/x32
libcpuid/x64 libcpuid/x64
cpuid_tool/x32 cpuid_tool/x32
cpuid_tool/x64 cpuid_tool/
utils/decode_cpuid_revision
*.vcxproj.user *.vcxproj.user
build build
/docs /docs

31
utils/decode_cpuid_revision.c Normal file
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@ -0,0 +1,31 @@
/* A simple tool to decode the "CPUID Revision".
Build with:
gcc decode_cpuid_revision.c -lcpuid -o decode_cpuid_revision
*/
#include <stdio.h>
#include <stdlib.h>
#include "../libcpuid/libcpuid.h"
#define ANSWER_TO_THE_ULTIMATE_QUESTION_OF_LIFE_THE_UNIVERSE_AND_EVERYTHING 42
int main(int argc, char** argv)
{
struct cpu_raw_data_t raw;
struct cpu_id_t data;
if (argc < 2) {
printf("%s: x86 CPUID Revision is required as argument.\n", argv[0]);
return 1;
}
raw.basic_cpuid[0][EAX] = ANSWER_TO_THE_ULTIMATE_QUESTION_OF_LIFE_THE_UNIVERSE_AND_EVERYTHING;
raw.basic_cpuid[1][EAX] = strtol(argv[1], NULL, 16);
cpu_identify(&raw, &data);
printf("%s decoded to:\n", argv[1]);
printf(" family : %1$d (%1$02Xh)\n", data.x86.family);
printf(" model : %1$d (%1$02Xh)\n", data.x86.model);
printf(" stepping : %1$d (%1$02Xh)\n", data.x86.stepping);
printf(" ext_family : %1$d (%1$02Xh)\n", data.x86.ext_family);
printf(" ext_model : %1$d (%1$02Xh)\n", data.x86.ext_model);
}