Remove qemu-common.h include from most units

[mirror_qemu.git] / target / i386 / hvf / x86_cpuid.c

diff --git a/target/i386/hvf/x86_cpuid.c b/target/i386/hvf/x86_cpuid.c
index 16762b6eb44a6112a4ad729a2ce3f1d7a786d54f..f24dd50e48ff3845dd0365cec87674280f0488c2 100644 (file)
--- a/target/i386/hvf/x86_cpuid.c
+++ b/target/i386/hvf/x86_cpuid.c
@@ -7,7 +7,7 @@
  * This program is free software; you can redistribute it and/or
  * modify it under the terms of the GNU Lesser General Public
  * License as published by the Free Software Foundation; either
- * version 2 of the License, or (at your option) any later version.
+ * version 2.1 of the License, or (at your option) any later version.
  *
  * This program is distributed in the hope that it will be useful,
  * but WITHOUT ANY WARRANTY; without even the implied warranty of
@@ -21,21 +21,27 @@
  */
 
 #include "qemu/osdep.h"
-#include "qemu-common.h"
 #include "cpu.h"
 #include "x86.h"
 #include "vmx.h"
 #include "sysemu/hvf.h"
 
-static uint64_t xgetbv(uint32_t xcr)
+static bool xgetbv(uint32_t cpuid_ecx, uint32_t idx, uint64_t *xcr)
 {
-    uint32_t eax, edx;
+    uint32_t xcrl, xcrh;
 
-    __asm__ volatile ("xgetbv"
-                      : "=a" (eax), "=d" (edx)
-                      : "c" (xcr));
+    if (cpuid_ecx & CPUID_EXT_OSXSAVE) {
+        /*
+         * The xgetbv instruction is not available to older versions of
+         * the assembler, so we encode the instruction manually.
+         */
+        asm(".byte 0x0f, 0x01, 0xd0" : "=a" (xcrl), "=d" (xcrh) : "c" (idx));
 
-    return (((uint64_t)edx) << 32) | eax;
+        *xcr = (((uint64_t)xcrh) << 32) | xcrl;
+        return true;
+    }
+
+    return false;
 }
 
 uint32_t hvf_get_supported_cpuid(uint32_t func, uint32_t idx,
@@ -100,12 +106,15 @@ uint32_t hvf_get_supported_cpuid(uint32_t func, uint32_t idx,
         break;
     case 0xD:
         if (idx == 0) {
-            uint64_t host_xcr0 = xgetbv(0);
-            uint64_t supp_xcr0 = host_xcr0 & (XSTATE_FP_MASK | XSTATE_SSE_MASK |
-                                  XSTATE_YMM_MASK | XSTATE_BNDREGS_MASK |
-                                  XSTATE_BNDCSR_MASK | XSTATE_OPMASK_MASK |
-                                  XSTATE_ZMM_Hi256_MASK | XSTATE_Hi16_ZMM_MASK);
-            eax &= supp_xcr0;
+            uint64_t host_xcr0;
+            if (xgetbv(ecx, 0, &host_xcr0)) {
+                uint64_t supp_xcr0 = host_xcr0 & (XSTATE_FP_MASK |
+                                  XSTATE_SSE_MASK | XSTATE_YMM_MASK |
+                                  XSTATE_BNDREGS_MASK | XSTATE_BNDCSR_MASK |
+                                  XSTATE_OPMASK_MASK | XSTATE_ZMM_Hi256_MASK |
+                                  XSTATE_Hi16_ZMM_MASK);
+                eax &= supp_xcr0;
+            }
         } else if (idx == 1) {
             hv_vmx_read_capability(HV_VMX_CAP_PROCBASED2, &cap);
             eax &= CPUID_XSAVE_XSAVEOPT | CPUID_XSAVE_XGETBV1;
@@ -122,6 +131,10 @@ uint32_t hvf_get_supported_cpuid(uint32_t func, uint32_t idx,
                 CPUID_PAT | CPUID_PSE36 | CPUID_EXT2_MMXEXT | CPUID_MMX |
                 CPUID_FXSR | CPUID_EXT2_FXSR | CPUID_EXT2_PDPE1GB | CPUID_EXT2_3DNOWEXT |
                 CPUID_EXT2_3DNOW | CPUID_EXT2_LM | CPUID_EXT2_RDTSCP | CPUID_EXT2_NX;
+        hv_vmx_read_capability(HV_VMX_CAP_PROCBASED2, &cap);
+        if (!(cap & CPU_BASED2_RDTSCP)) {
+            edx &= ~CPUID_EXT2_RDTSCP;
+        }
         hv_vmx_read_capability(HV_VMX_CAP_PROCBASED, &cap);
         if (!(cap & CPU_BASED_TSC_OFFSET)) {
             edx &= ~CPUID_EXT2_RDTSCP;