Changeset 54253 in vbox

Timestamp:

Feb 17, 2015 7:44:15 PM (10 years ago)

Author:

vboxsync

Message:

tstRTInlineAsm.cpp: Benchmark ASMReadTSC, ASMReadTscWithAux and ASMGetIDTR.

File:

• trunk/src/VBox/Runtime/testcase/tstRTInlineAsm.cpp (modified) (2 diffs)

trunk/src/VBox/Runtime/testcase/tstRTInlineAsm.cpp

@@ -42 +42 @@
 #if !defined(GCC44_32BIT_PIC) && (defined(RT_ARCH_AMD64) || defined(RT_ARCH_X86))
 # include <iprt/asm-amd64-x86.h>
+# include <iprt/x86.h>
 #else
 # include <iprt/time.h>
@@ -1685 +1686 @@
     BENCH(s_u8 = ASMGetApicId(),                "ASMGetApicId");
 #endif
+#if !defined(GCC44_32BIT_PIC) && (defined(RT_ARCH_AMD64) || defined(RT_ARCH_X86))
+    BENCH(s_u64 = ASMReadTSC(),                 "ASMReadTSC");
+    uint32_t uAux;
+    if (   ASMHasCpuId()
+        && ASMIsValidExtRange(ASMCpuId_EAX(0x80000000))
+        && (ASMCpuId_EDX(0x80000001) & X86_CPUID_EXT_FEATURE_EDX_RDTSCP) )
+        BENCH(s_u64 = ASMReadTscWithAux(&uAux),  "ASMReadTscWithAux");
+    union
+    {
+        uint64_t    u64[2];
+        RTIDTR      Unaligned;
+        struct
+        {
+            uint16_t abPadding[3];
+            RTIDTR   Aligned;
+        } s;
+    } uBuf;
+    Assert(((uintptr_t)&uBuf.Unaligned.pIdt & (sizeof(uintptr_t) - 1)) != 0);
+    BENCH(ASMGetIDTR(&uBuf.Unaligned),            "ASMGetIDTR/unaligned");
+    Assert(((uintptr_t)&uBuf.s.Aligned.pIdt & (sizeof(uintptr_t) - 1)) == 0);
+    BENCH(ASMGetIDTR(&uBuf.s.Aligned),            "ASMGetIDTR/aligned");
+#endif
 
 #undef BENCH