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cpuid_vendor_id.mod.c: don't waste 1 char for convenience

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パチュリー・ノーレッジ
2025-03-09 14:10:17 +03:00
parent 3a31367749
commit b45d4a865e
1 changed files with 4 additions and 3 deletions
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7
c-programming/sys/cpuid_vendor_id.mod.c
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@@ -58,7 +58,7 @@ static inline void native_cpuid(unsigned int function_id, cpuid_t r) {
#endif #endif
} }
#define VENDOR_ID_LEN 13 #define VENDOR_ID_LEN 12
/* /*
* FIXME: you have to make sure the vendor argument is at least lengthed * FIXME: you have to make sure the vendor argument is at least lengthed
@@ -74,12 +74,13 @@ static inline void cpuid_vendor_id(char vendor[VENDOR_ID_LEN]) {
((unsigned*) vendor)[0] = v[EBX]; ((unsigned*) vendor)[0] = v[EBX];
((unsigned*) vendor)[1] = v[EDX]; ((unsigned*) vendor)[1] = v[EDX];
((unsigned*) vendor)[2] = v[ECX]; ((unsigned*) vendor)[2] = v[ECX];
vendor[VENDOR_ID_LEN - 1] = '\0';
} }
int main(void) { int main(void) {
char vendor_string[VENDOR_ID_LEN]; char vendor_string[VENDOR_ID_LEN];
cpuid_vendor_id(vendor_string); cpuid_vendor_id(vendor_string);
printf("CPU Vendor ID: '%s'\n", vendor_string); fputs("CPU Vendor ID: '", stdout);
fwrite(vendor_string, sizeof(char), 12, stdout);
fputs("'\n", stdout);
return 0; return 0;
} }