linux/arch/x86/boot/mkcpustr.c
H. Peter Anvin f0be6c6a69 x86 setup: print missing CPU features in cleartext
Instead of obscure numbers, print the list of missing CPU features in
cleartext.  To conserve space, use a host program (mkcpustr.c) to
produce a compact list of mandatory features only.

Signed-off-by: H. Peter Anvin <hpa@zytor.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
2008-02-04 16:48:00 +01:00

50 lines
1.2 KiB
C

/* ----------------------------------------------------------------------- *
*
* Copyright 2008 rPath, Inc. - All Rights Reserved
*
* This file is part of the Linux kernel, and is made available under
* the terms of the GNU General Public License version 2 or (at your
* option) any later version; incorporated herein by reference.
*
* ----------------------------------------------------------------------- */
/*
* This is a host program to preprocess the CPU strings into a
* compact format suitable for the setup code.
*/
#include <stdio.h>
#include "../kernel/cpu/feature_names.c"
#if NCAPFLAGS > 8
# error "Need to adjust the boot code handling of CPUID strings"
#endif
int main(void)
{
int i;
const char *str;
printf("static const char x86_cap_strs[] = \n");
for (i = 0; i < NCAPINTS*32; i++) {
str = x86_cap_flags[i];
if (i == NCAPINTS*32-1) {
/* The last entry must be unconditional; this
also consumes the compiler-added null character */
if (!str)
str = "";
printf("\t\"\\x%02x\"\"%s\"\n", i, str);
} else if (str) {
printf("#if REQUIRED_MASK%d & (1 << %d)\n"
"\t\"\\x%02x\"\"%s\\0\"\n"
"#endif\n",
i >> 5, i & 31, i, str);
}
}
printf("\t;\n");
return 0;
}