Return local APIC id in CPUID 00000001h function in EBX register

2005-01-29 15:24:57 +00:00 · 2005-01-29 15:24:57 +00:00 · 68714924b0
commit 68714924b0
parent 7a35a36390
1 changed files with 5 additions and 1 deletions
--- a/bochs/cpu/cpuid.cc
+++ b/bochs/cpu/cpuid.cc
@ -259,7 +259,11 @@ void BX_CPU_C::CPUID(bxInstruction_c *i)
      //   [29]    TM: Thermal Monitor
      //   [31:30] Reserved
      RAX = get_cpu_version_information();
-      RBX = 0; // still not implemented
+#if BX_SUPPORT_APIC
+      RBX = (BX_CPU_THIS_PTR local_apic.get_id() << 24);
+#else
+      RBX = 0;
+#endif
      RCX = get_extended_cpuid_features ();
      RDX = get_std_cpuid_features ();
      break;