| 74,21 → 74,21 |
|---|
| uint32_t val, ret; |
| |
| asm volatile ( |
| "pushf\n" /* read flags */ |
| "popl %0\n" |
| "movl %0, %1\n" |
| "pushf\n" /* read flags */ |
| "popl %[ret]\n" |
| "movl %[ret], %[val]\n" |
| |
| "btcl $21, %1\n" /* swap the ID bit */ |
| "btcl $21, %[val]\n" /* swap the ID bit */ |
| |
| "pushl %1\n" /* propagate the change into flags */ |
| "pushl %[val]\n" /* propagate the change into flags */ |
| "popf\n" |
| "pushf\n" |
| "popl %1\n" |
| "popl %[val]\n" |
| |
| "andl $(1 << 21), %0\n" /* interrested only in ID bit */ |
| "andl $(1 << 21), %1\n" |
| "xorl %1, %0\n" |
| : "=r" (ret), "=r" (val) |
| "andl $(1 << 21), %[ret]\n" /* interrested only in ID bit */ |
| "andl $(1 << 21), %[val]\n" |
| "xorl %[val], %[ret]\n" |
| : [ret] "=r" (ret), [val] "=r" (val) |
| ); |
| |
| return ret; |
| 98,7 → 98,8 |
|---|
| { |
| asm volatile ( |
| "cpuid\n" |
| : "=a" (info->cpuid_eax), "=b" (info->cpuid_ebx), "=c" (info->cpuid_ecx), "=d" (info->cpuid_edx) |
| : "=a" (info->cpuid_eax), "=b" (info->cpuid_ebx), |
| "=c" (info->cpuid_ecx), "=d" (info->cpuid_edx) |
| : "a" (cmd) |
| ); |
| } |