added exception error codes, added g_vcpu global...

exit_handler.cpp

@@ -68,7 +68,9 @@ auto exit_handler(hv::pguest_registers regs) -> void
 			interrupt.flags = interruption_type::hardware_exception;
 			interrupt.vector = EXCEPTION_GP_FAULT;
 			interrupt.valid = true;
+
 			__vmx_vmwrite(VMCS_CTRL_VMENTRY_INTERRUPTION_INFORMATION_FIELD, interrupt.flags);
+			__vmx_vmwrite(VMCS_VMEXIT_INTERRUPTION_ERROR_CODE, g_vcpu->error_code);
 		}
 		return; // dont advance rip...
 	}
@@ -95,7 +97,9 @@ auto exit_handler(hv::pguest_registers regs) -> void
 			interrupt.flags = interruption_type::hardware_exception;
 			interrupt.vector = EXCEPTION_GP_FAULT;
 			interrupt.valid = true;
+
 			__vmx_vmwrite(VMCS_CTRL_VMENTRY_INTERRUPTION_INFORMATION_FIELD, interrupt.flags);
+			__vmx_vmwrite(VMCS_VMEXIT_INTERRUPTION_ERROR_CODE, g_vcpu->error_code);
 		}
 		return; // dont advance rip...
 	}
@@ -122,7 +126,9 @@ auto exit_handler(hv::pguest_registers regs) -> void
 			interrupt.flags = interruption_type::hardware_exception;
 			interrupt.vector = EXCEPTION_GP_FAULT;
 			interrupt.valid = true;
+
 			__vmx_vmwrite(VMCS_CTRL_VMENTRY_INTERRUPTION_INFORMATION_FIELD, interrupt.flags);
+			__vmx_vmwrite(VMCS_VMEXIT_INTERRUPTION_ERROR_CODE, g_vcpu->error_code);
 		}
 		return; // dont advance rip...
 	}
@@ -210,7 +216,10 @@ auto exit_handler(hv::pguest_registers regs) -> void
 			interrupt.flags = interruption_type::hardware_exception;
 			interrupt.vector = EXCEPTION_INVALID_OPCODE;
 			interrupt.valid = true;
+
 			__vmx_vmwrite(VMCS_CTRL_VMENTRY_INTERRUPTION_INFORMATION_FIELD, interrupt.flags);
+			__vmx_vmwrite(VMCS_VMEXIT_INTERRUPTION_ERROR_CODE, NULL);
+			return; // dont advance rip...
 		}
 		break;
 	}
@@ -226,7 +235,10 @@ auto exit_handler(hv::pguest_registers regs) -> void
 		interrupt.flags = interruption_type::hardware_exception;
 		interrupt.vector = EXCEPTION_INVALID_OPCODE;
 		interrupt.valid = true;
+
 		__vmx_vmwrite(VMCS_CTRL_VMENTRY_INTERRUPTION_INFORMATION_FIELD, interrupt.flags);
+		// manual says there will never be an error code... so just put null...
+		__vmx_vmwrite(VMCS_VMEXIT_INTERRUPTION_ERROR_CODE, NULL);
 		return; // dont advance rip...
 	}
 	default:

hv_types.hpp

@@ -657,7 +657,7 @@ namespace hv
 		u64 vmcs_phys;
 		u64 vmxon_phys;
 		u64 host_stack;
-
+		u64 error_code;
 		tss64 tss;
 		segment_descriptor_64* gdt;
 	} vcpu_ctx, * pvcpu_ctx;

idt.cpp

@@ -2,6 +2,7 @@
 
 auto seh_handler(hv::pidt_regs_t regs) -> void
 {
+    g_vcpu->error_code = regs->error_code;
     const auto rva = regs->rip - reinterpret_cast<u64>(idt::image_base);
     const auto nt_headers = reinterpret_cast<IMAGE_NT_HEADERS64*>(
         reinterpret_cast<u64>(idt::image_base) + 

idt.hpp

@@ -2,6 +2,7 @@
 #include "hv_types.hpp"
 #include "segment_intrin.h"
 #include "debug.hpp"
+#include "vmxon.hpp"
 
 #pragma section(".idt", read, write)
 extern "C" void __gp_handler(void);

vmcs.cpp

@@ -33,7 +33,7 @@ namespace vmcs
 		fs.request_privilege_level = NULL;
 		fs.table = NULL;
 		__vmx_vmwrite(VMCS_HOST_FS_SELECTOR, fs.flags);
-		__vmx_vmwrite(VMCS_HOST_GS_BASE, __readmsr(IA32_FS_BASE));
+		__vmx_vmwrite(VMCS_HOST_FS_BASE, __readmsr(IA32_FS_BASE));
 
 		segment_selector gs{ readgs() };
 		gs.request_privilege_level = NULL;

vmxexit_handler.h

@@ -3,6 +3,7 @@
 #include "debug.hpp"
 #include "invd.hpp"
 #include "mm.hpp"
+#include "vmxon.hpp"
 
 enum class vmcall_option
 {

vmxon.hpp

@@ -1,6 +1,19 @@
 #pragma once
 #include "hv_types.hpp"
 
+inline auto get_cpu_num() -> u32
+{
+	cpuid_eax_01 cpuid_value;
+	__cpuid((int*)&cpuid_value, 1);
+
+	return cpuid_value
+		.cpuid_additional_information
+		.initial_apic_id;
+}
+
+#define g_vcpu \
+	vmxon::g_vmx_ctx->vcpus[get_cpu_num()]
+
 namespace vmxon
 {
 	auto create_vmxon_region(hv::pvcpu_ctx vcpu_ctx) -> void;