Future/hypervisor
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Fixes and ia32 doc

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This commit is contained in:
momo5502 2022-03-27 16:21:54 +02:00
parent 2c48c4b595
commit 630b631692
3 changed files with 35 additions and 7 deletions
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3
.gitmodules vendored
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@ -5,3 +5,6 @@
path = external/vcrtl
url = https://github.com/avakar/vcrtl.git
ignore = dirty
[submodule "external/ia32-doc"]
path = external/ia32-doc
url = https://github.com/wbenny/ia32-doc.git

1
external/ia32-doc vendored Submodule

@ -0,0 +1 @@
Subproject commit 77e021b690633e6274f4ebfc3734fdbd0be3bdf7

38
src/driver/hypervisor.cpp
View File

@ -17,7 +17,7 @@ namespace
bool is_vmx_supported()
{
int cpuid_data[4] = {0};
int32_t cpuid_data[4] = {0};
__cpuid(cpuid_data, 1);
return cpuid_data[2] & 0x20;
}
@ -35,6 +35,20 @@ namespace
{
return is_vmx_supported() && is_vmx_available();
}
bool is_hypervisor_present()
{
int32_t cpuid_data[4] = {0};
__cpuid(cpuid_data, 1);
if ((cpuid_data[2] & 0x80000000) == 0)
{
return false;
}
__cpuid(cpuid_data, 0x40000001);
return cpuid_data[0] == 'momo';
}
}
hypervisor::hypervisor()
@ -44,10 +58,12 @@ hypervisor::hypervisor()
throw std::runtime_error("Hypervisor already instantiated");
}
auto destructor = utils::finally([]()
auto destructor = utils::finally([this]()
{
this->free_vm_states();
instance = nullptr;
});
instance = this;
if (!is_virtualization_supported())
@ -56,6 +72,7 @@ hypervisor::hypervisor()
}
debug_log("VMX supported!\n");
this->allocate_vm_states();
this->enable();
destructor.cancel();
}
@ -63,6 +80,7 @@ hypervisor::hypervisor()
hypervisor::~hypervisor()
{
this->disable();
this->free_vm_states();
instance = nullptr;
}
@ -72,14 +90,10 @@ void hypervisor::disable()
{
this->disable_core();
});
this->free_vm_states();
}
void hypervisor::enable()
{
this->allocate_vm_states();
const auto cr3 = __readcr3();
bool success = true;
@ -91,6 +105,7 @@ void hypervisor::enable()
if (!success)
{
this->disable();
throw std::runtime_error("Hypervisor initialization failed");
}
}
@ -115,11 +130,20 @@ bool hypervisor::try_enable_core(const uint64_t cr3)
void hypervisor::enable_core(uint64_t /*cr3*/)
{
auto* vm_state = this->get_current_vm_state();
throw std::runtime_error("Not implemented!");
if (!is_hypervisor_present())
{
throw std::runtime_error("Hypervisor is not present");
}
}
void hypervisor::disable_core()
{
if (!is_hypervisor_present())
{
return;
}
auto* vm_state = this->get_current_vm_state();
}