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[Qemu-devel] [PATCH 1/4] target-i386: Introduce x86_cpuid_version_set_fa
From: |
Andreas Färber |
Subject: |
[Qemu-devel] [PATCH 1/4] target-i386: Introduce x86_cpuid_version_set_family() |
Date: |
Fri, 17 Feb 2012 17:46:01 +0100 |
Move the logic for setting the family and extended family into a
helper function.
To make the helper self-contained and in preparation of future
unordered/multiple uses, mask out any previous family values first.
Signed-off-by: Andreas Färber <address@hidden>
---
target-i386/cpuid.c | 15 +++++++++++----
1 files changed, 11 insertions(+), 4 deletions(-)
diff --git a/target-i386/cpuid.c b/target-i386/cpuid.c
index b9bfeaf..598a27c 100644
--- a/target-i386/cpuid.c
+++ b/target-i386/cpuid.c
@@ -597,6 +597,16 @@ static int check_features_against_host(x86_def_t
*guest_def)
return rv;
}
+static void x86_cpuid_version_set_family(CPUX86State *env, int family)
+{
+ env->cpuid_version &= ~0xff00f00;
+ if (family > 0x0f) {
+ env->cpuid_version |= 0xf00 | ((family - 0x0f) << 20);
+ } else {
+ env->cpuid_version |= family << 8;
+ }
+}
+
static int cpu_x86_find_by_name(x86_def_t *x86_cpu_def, const char *cpu_model)
{
unsigned int i;
@@ -883,10 +893,7 @@ int cpu_x86_register (CPUX86State *env, const char
*cpu_model)
}
env->cpuid_vendor_override = def->vendor_override;
env->cpuid_level = def->level;
- if (def->family > 0x0f)
- env->cpuid_version = 0xf00 | ((def->family - 0x0f) << 20);
- else
- env->cpuid_version = def->family << 8;
+ x86_cpuid_version_set_family(env, def->family);
env->cpuid_version |= ((def->model & 0xf) << 4) | ((def->model >> 4) <<
16);
env->cpuid_version |= def->stepping;
env->cpuid_features = def->features;
--
1.7.7