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hypervisor: Implement getter/setter for StandardRegisters

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This would be used to abstract away differences in KVM/MSHV
representation of StandardRegisters.

Signed-off-by: Jinank Jain <jinankjain@microsoft.com>
This commit is contained in:
Jinank Jain
2024-08-07 22:42:06 +05:30
committed by Bo Chen
parent feb0a36067
commit 8f3bd4d9ec
3 changed files with 87 additions and 0 deletions
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75
hypervisor/src/lib.rs
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@@ -49,6 +49,7 @@ mod cpu;
mod device;
pub use crate::hypervisor::{Hypervisor, HypervisorError};
use concat_idents::concat_idents;
#[cfg(target_arch = "x86_64")]
pub use cpu::CpuVendor;
pub use cpu::{HypervisorCpuError, Vcpu, VmExit};
@@ -195,3 +196,77 @@ pub enum StandardRegisters {
#[cfg(all(feature = "mshv", target_arch = "x86_64"))]
Mshv(mshv_bindings::StandardRegisters),
}
macro_rules! set_x86_64_reg {
($reg_name:ident) => {
concat_idents!(method_name = "set_", $reg_name {
#[cfg(target_arch = "x86_64")]
impl StandardRegisters {
pub fn method_name(&mut self, val: u64) {
match self {
#[cfg(feature = "kvm")]
StandardRegisters::Kvm(s) => s.$reg_name = val,
#[cfg(feature = "mshv")]
StandardRegisters::Mshv(s) => s.$reg_name = val,
}
}
}
});
}
}
macro_rules! get_x86_64_reg {
($reg_name:ident) => {
concat_idents!(method_name = "get_", $reg_name {
#[cfg(target_arch = "x86_64")]
impl StandardRegisters {
pub fn method_name(&self) -> u64 {
match self {
#[cfg(feature = "kvm")]
StandardRegisters::Kvm(s) => s.$reg_name,
#[cfg(feature = "mshv")]
StandardRegisters::Mshv(s) => s.$reg_name,
}
}
}
});
}
}
set_x86_64_reg!(rax);
set_x86_64_reg!(rbx);
set_x86_64_reg!(rcx);
set_x86_64_reg!(rdx);
set_x86_64_reg!(rsi);
set_x86_64_reg!(rdi);
set_x86_64_reg!(rsp);
set_x86_64_reg!(rbp);
set_x86_64_reg!(r8);
set_x86_64_reg!(r9);
set_x86_64_reg!(r10);
set_x86_64_reg!(r11);
set_x86_64_reg!(r12);
set_x86_64_reg!(r13);
set_x86_64_reg!(r14);
set_x86_64_reg!(r15);
set_x86_64_reg!(rip);
set_x86_64_reg!(rflags);
get_x86_64_reg!(rax);
get_x86_64_reg!(rbx);
get_x86_64_reg!(rcx);
get_x86_64_reg!(rdx);
get_x86_64_reg!(rsi);
get_x86_64_reg!(rdi);
get_x86_64_reg!(rsp);
get_x86_64_reg!(rbp);
get_x86_64_reg!(r8);
get_x86_64_reg!(r9);
get_x86_64_reg!(r10);
get_x86_64_reg!(r11);
get_x86_64_reg!(r12);
get_x86_64_reg!(r13);
get_x86_64_reg!(r14);
get_x86_64_reg!(r15);
get_x86_64_reg!(rip);
get_x86_64_reg!(rflags);