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target-i386: Introduce x86_cpuid_version_set_stepping() 

Move the logic for setting the stepping field into a helper function.

To make the function self-contained and to prepare for future
unordered/multiple uses, mask out any previous stepping values first.

Signed-off-by: Andreas Färber <afaerber@suse.de>
Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
This commit is contained in:
Andreas Färber 2012-02-17 17:46:03 +01:00 committed by Anthony Liguori
parent b0704cbd3f
commit 38c3dc4622
1 changed files with 7 additions and 1 deletions
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8
target-i386/cpuid.c
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@ -613,6 +613,12 @@ static void x86_cpuid_version_set_model(CPUX86State *env, int model)
env->cpuid_version |= ((model & 0xf) << 4) | ((model >> 4) << 16);
}
static void x86_cpuid_version_set_stepping(CPUX86State *env, int stepping)
{
env->cpuid_version &= ~0xf;
env->cpuid_version |= stepping & 0xf;
}
static int cpu_x86_find_by_name(x86_def_t *x86_cpu_def, const char *cpu_model)
{
unsigned int i;
@ -901,7 +907,7 @@ int cpu_x86_register (CPUX86State *env, const char *cpu_model)
env->cpuid_level = def->level;
x86_cpuid_version_set_family(env, def->family);
x86_cpuid_version_set_model(env, def->model);
env->cpuid_version |= def->stepping;
x86_cpuid_version_set_stepping(env, def->stepping);
env->cpuid_features = def->features;
env->cpuid_ext_features = def->ext_features;
env->cpuid_ext2_features = def->ext2_features;