On 05/19/2010 11:34 AM, Sheng Yang wrote:
Signed-off-by: Sheng Yang<sheng@xxxxxxxxxxxxxxx>
---
target-i386/cpuid.c | 32 ++++++++++++++++++++++++++++++++
Can send to Anthony directly, while tcg doesn't support xsave/ymm, all
the code here is generic.
1 files changed, 32 insertions(+), 0 deletions(-)
diff --git a/target-i386/cpuid.c b/target-i386/cpuid.c
index eebf038..21e94f3 100644
--- a/target-i386/cpuid.c
+++ b/target-i386/cpuid.c
@@ -1067,6 +1067,38 @@ void cpu_x86_cpuid(CPUX86State *env, uint32_t index, uint32_t count,
*ecx = 0;
*edx = 0;
break;
+ case 0xD:
+ /* Processor Extended State */
+ if (!(env->cpuid_ext_features& CPUID_EXT_XSAVE)) {
+ *eax = 0;
+ *ebx = 0;
+ *ecx = 0;
+ *edx = 0;
+ break;
+ }
+ if (count == 0) {
+ *eax = 0x7;
+ *ebx = 0x340;
+ *ecx = 0x340;
+ *edx = 0;
+ } else if (count == 1) {
+ /* eax = 1, so we can continue with others */
+ *eax = 1;
+ *ebx = 0;
+ *ecx = 0;
+ *edx = 0;
+ } else if (count == 2) {
+ *eax = 0x100;
+ *ebx = 0x240;
+ *ecx = 0;
+ *edx = 0;
+ } else {
+ *eax = 0;
+ *ebx = 0;
+ *ecx = 0;
+ *edx = 0;
+ }
+ break;
Lots of magic numbers. Symbolic constants or explanatory comments.
--
Do not meddle in the internals of kernels, for they are subtle and quick to panic.
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