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When we restore the mxcsr resgister with FXRSTOR, we need to update the various SSE
flag files by calling update_sse_status() else we're using the flags from some other
process with interesting results.
The code isn't ordered to make this easy hence the function declaration.
Upstream-Status: Pending
RP 2013/9/30
Index: qemu-1.5.0/target-i386/fpu_helper.c
===================================================================
--- qemu-1.5.0.orig/target-i386/fpu_helper.c 2013-09-30 18:46:39.283377648 +0000
+++ qemu-1.5.0/target-i386/fpu_helper.c 2013-09-30 18:46:56.895377232 +0000
@@ -1149,6 +1149,8 @@
}
}
+static void update_sse_status(CPUX86State *env);
+
void helper_fxrstor(CPUX86State *env, target_ulong ptr, int data64)
{
int i, fpus, fptag, nb_xmm_regs;
@@ -1180,6 +1182,7 @@
if (env->cr[4] & CR4_OSFXSR_MASK) {
/* XXX: finish it */
env->mxcsr = cpu_ldl_data(env, ptr + 0x18);
+ update_sse_status(env);
/* cpu_ldl_data(env, ptr + 0x1c); */
if (env->hflags & HF_CS64_MASK) {
nb_xmm_regs = 16;
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