Patchwork [uq/master] kvm: x86: Use symbols for all xsave field

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Submitter Jan Kiszka
Date Oct. 27, 2011, 5:26 p.m.
Message ID <4EA9942A.8010304@siemens.com>
Download mbox | patch
Permalink /patch/122191/
State New
Headers show

Comments

Jan Kiszka - Oct. 27, 2011, 5:26 p.m.
Field 0 (FCW+FSW) and 1 (FTW+FOP) were hard-coded so far.

Signed-off-by: Jan Kiszka <jan.kiszka@siemens.com>
---
 target-i386/kvm.c |   14 ++++++++------
 1 files changed, 8 insertions(+), 6 deletions(-)

Patch

diff --git a/target-i386/kvm.c b/target-i386/kvm.c
index 23437ee..b838091 100644
--- a/target-i386/kvm.c
+++ b/target-i386/kvm.c
@@ -763,6 +763,8 @@  static int kvm_put_fpu(CPUState *env)
     return kvm_vcpu_ioctl(env, KVM_SET_FPU, &fpu);
 }
 
+#define XSAVE_FCW_FSW     0
+#define XSAVE_FTW_FOP     1
 #define XSAVE_CWD_RIP     2
 #define XSAVE_CWD_RDP     4
 #define XSAVE_MXCSR       6
@@ -789,8 +791,8 @@  static int kvm_put_xsave(CPUState *env)
     for (i = 0; i < 8; ++i) {
         twd |= (!env->fptags[i]) << i;
     }
-    xsave->region[0] = (uint32_t)(swd << 16) + cwd;
-    xsave->region[1] = (uint32_t)(env->fpop << 16) + twd;
+    xsave->region[XSAVE_FCW_FSW] = (uint32_t)(swd << 16) + cwd;
+    xsave->region[XSAVE_FTW_FOP] = (uint32_t)(env->fpop << 16) + twd;
     memcpy(&xsave->region[XSAVE_CWD_RIP], &env->fpip, sizeof(env->fpip));
     memcpy(&xsave->region[XSAVE_CWD_RDP], &env->fpdp, sizeof(env->fpdp));
     memcpy(&xsave->region[XSAVE_ST_SPACE], env->fpregs,
@@ -991,10 +993,10 @@  static int kvm_get_xsave(CPUState *env)
         return ret;
     }
 
-    cwd = (uint16_t)xsave->region[0];
-    swd = (uint16_t)(xsave->region[0] >> 16);
-    twd = (uint16_t)xsave->region[1];
-    env->fpop = (uint16_t)(xsave->region[1] >> 16);
+    cwd = (uint16_t)xsave->region[XSAVE_FCW_FSW];
+    swd = (uint16_t)(xsave->region[XSAVE_FCW_FSW] >> 16);
+    twd = (uint16_t)xsave->region[XSAVE_FTW_FOP];
+    env->fpop = (uint16_t)(xsave->region[XSAVE_FTW_FOP] >> 16);
     env->fpstt = (swd >> 11) & 7;
     env->fpus = swd;
     env->fpuc = cwd;