cpuid_check.c: improve the printing of usage() to make it easier to use

Signed-off-by: Pengfei Xu <[email protected]>

tools/cpuid_check/cpuid_check.c

@@ -20,8 +20,9 @@ int usage(char *progname)
 	printf("  NUM2: input EBX value in hex\n");
 	printf("  NUM3: input ECX value in hex\n");
 	printf("  NUM4: input EDX value in hex\n");
-	printf("  CHAR5: a|b|c|d, which match with EAX|EBX|ECX|EDX output\n");
-	printf("  NUM6: bit number in decimal for output CHAR5 register which matched with SPEC\n");
+	printf("  CHAR5: a|b|c|d indicates the output matching EAX|EBX|ECX|EDX\n");
+	printf("  NUM6: number of decimal digits in CHAR5 output register matching SPEC\n");
+	printf("CET SHSTK cpuid check example:\n# %s 7 0 0 0 c 7\n", progname);
 	exit(2);
 }