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60 lines
1.9 KiB
60 lines
1.9 KiB
#include "vmxlaunch.hpp"
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auto vmxlaunch::init_vmcs(cr3 cr3_value) -> void
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{
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const auto vcpu =
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vmxon::g_vmx_ctx->vcpus[
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KeGetCurrentProcessorNumber()];
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__vmx_vmclear(&vcpu->vmcs_phys);
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__vmx_vmptrld(&vcpu->vmcs_phys);
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segment_descriptor_register_64 gdt_value;
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_sgdt(&gdt_value);
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const auto [tr_descriptor, tr_rights, tr_limit, tr_base] =
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gdt::get_info(gdt_value, segment_selector{ readtr() });
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// copy windows TSS and windows GDT...
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// change TSS base to new TSS...
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hv::segment_descriptor_addr_t tss{ &vcpu->tss };
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memcpy(&vcpu->tss, (void*)tr_base, sizeof hv::tss64);
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memcpy(vcpu->gdt, (void*)gdt_value.base_address, PAGE_SIZE);
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vcpu->tss.interrupt_stack_table[idt::ist_idx::pf] =
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reinterpret_cast<u64>(ExAllocatePool(NonPagedPool,
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PAGE_SIZE * HOST_STACK_PAGES)) + (PAGE_SIZE * HOST_STACK_PAGES);
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vcpu->tss.interrupt_stack_table[idt::ist_idx::gp] =
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reinterpret_cast<u64>(ExAllocatePool(NonPagedPool,
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PAGE_SIZE * HOST_STACK_PAGES)) + (PAGE_SIZE * HOST_STACK_PAGES);
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vcpu->gdt[segment_selector{ readtr() }.idx].base_address_upper = tss.upper;
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vcpu->gdt[segment_selector{ readtr() }.idx].base_address_high = tss.high;
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vcpu->gdt[segment_selector{ readtr() }.idx].base_address_middle = tss.middle;
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vcpu->gdt[segment_selector{ readtr() }.idx].base_address_low = tss.low;
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vmcs::setup_host(&vmxexit_handler,
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vcpu->host_stack, cr3_value, (u64)vcpu->gdt);
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vmcs::setup_guest();
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vmcs::setup_controls();
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}
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auto vmxlaunch::launch() -> void
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{
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const auto vmlaunch_result = vmxlaunch_processor();
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DBG_PRINT("vmxlaunch for processor: %d\n", KeGetCurrentProcessorNumber());
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DBG_PRINT(" - vmxlaunch result: 0x%x\n", vmlaunch_result);
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if (vmlaunch_result != VMX_LAUNCH_SUCCESS)
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{
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u64 vmxerror;
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rflags flags{ vmlaunch_result };
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__vmx_vmread(VMCS_VM_INSTRUCTION_ERROR, &vmxerror);
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DBG_PRINT("vmxerror: %d\n", vmxerror);
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DBG_PRINT("eflags.zero_flag: %d\n", flags.zero_flag);
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DBG_PRINT("eflags.carry_flag: %d\n", flags.carry_flag);
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}
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} |