Changeset 106635 in vbox for trunk/src/VBox/HostDrivers/Support/SUPLibAll.cpp

Timestamp:

Oct 23, 2024 9:30:37 PM (3 months ago)

Author:

vboxsync

Message:

SUPDrv: Making it build on win.arm64... jiraref:VBP-1253

File:

• trunk/src/VBox/HostDrivers/Support/SUPLibAll.cpp (modified) (6 diffs)

trunk/src/VBox/HostDrivers/Support/SUPLibAll.cpp

@@ -49 +49 @@
 #if defined(RT_ARCH_AMD64) || defined(RT_ARCH_X86)
 # include <iprt/asm-amd64-x86.h>
+#elif defined(RT_ARCH_ARM64) || defined(RT_ARCH_ARM32)
+# include <iprt/asm-arm.h>
 #endif
 #include <iprt/errcore.h>
@@ -57 +59 @@
 
 
-#if defined(RT_ARCH_AMD64) || defined(RT_ARCH_X86)
+#if defined(RT_ARCH_AMD64) || defined(RT_ARCH_X86) || defined(RT_ARCH_ARM64) || defined(RT_ARCH_ARM32)
 /**
  * The slow case for SUPReadTsc where we need to apply deltas.
@@ -83 +85 @@
      * Read the TSC and get the corresponding aCPUs index.
      */
-#ifdef IN_RING3
+# ifdef IN_RING3
+#  if defined(RT_ARCH_AMD64) || defined(RT_ARCH_X86)
     if (pGip->fGetGipCpu & SUPGIPGETCPU_RDTSCP_MASK_MAX_SET_CPUS)
     {
@@ -163 +166 @@
         for (;;)
         {
-            uint8_t idApic = ASMGetApicId();
+            uint8_t const idApic = ASMGetApicId();
             uTsc = ASMReadTSC();
             if (RT_LIKELY(ASMGetApicId() == idApic))
@@ -178 +181 @@
         }
     }
+
+#  else /* !AMD64 || !X86 */
+#   if defined(RT_OS_WINDOWS)
+    /* Use TPIDRRO_EL0 (=cpu number) before and after reading the TSC. */
+    uint32_t cTries = 0;
+    for (;;)
+    {
+        RTCCUINTREG const idApic = ASMGetThreadIdRoEL0();
+        uTsc = ASMReadTSC();
+        if (RT_LIKELY(ASMGetThreadIdRoEL0() == idApic))
+        {
+            AssertBreakStmt(idApic < RT_ELEMENTS(pGip->aiCpuFromApicId), iGipCpu = UINT16_MAX);
+            iGipCpu = pGip->aiCpuFromApicId[idApic & 0xffff];
+            break;
+        }
+        if (cTries >= 16)
+        {
+            iGipCpu = UINT16_MAX;
+            break;
+        }
+        cTries++;
+    }
+#   else
+    /* Use RTMpCpuId before and after reading the TSC. */
+    uint32_t cTries = 0;
+    for (;;)
+    {
+        RTCPUID const idCpu = RTMpCpuId();
+        uTsc = ASMReadTSC();
+        if (RT_LIKELY(RTMpCpuId() == idCpu))
+        {
+            int const iCpuSet = RTMpCpuIdToSetIndex(idCpu);
+            iGipCpu = pGip->aiCpuFromCpuSetIdx[iCpuSet];
+            break;
+        }
+        if (cTries >= 16)
+        {
+            iGipCpu = UINT16_MAX;
+            break;
+        }
+        cTries++;
+    }
+#   endif
+#  endif /* !AMD64 || !X86 */
+
 #elif defined(IN_RING0)
     /* Ring-0: Use use RTMpCpuId(), no loops. */
@@ -234 +282 @@
 SUPR0_EXPORT_SYMBOL(SUPReadTscWithDelta);
 # endif
-#endif /* RT_ARCH_AMD64 || RT_ARCH_X86 */
+#endif /* defined(RT_ARCH_AMD64) || defined(RT_ARCH_X86) || defined(RT_ARCH_ARM64) || defined(RT_ARCH_ARM32) */