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hypervisor: x86: move RFLAGS bits to regs.rs

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Signed-off-by: Wei Liu <liuwe@microsoft.com>
This commit is contained in:
Wei Liu 2020-12-07 12:24:54 +00:00 committed by Samuel Ortiz
parent a44d96c9cc
commit 6d38612f6c
2 changed files with 16 additions and 14 deletions
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15
hypervisor/src/arch/x86/emulator/instructions/cmp.rs
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@ -14,23 +14,10 @@ extern crate iced_x86;
use crate::arch::emulator::{EmulationError, PlatformEmulator};
use crate::arch::x86::emulator::instructions::*;
use crate::arch::x86::regs::*;
use crate::arch::x86::Exception;
// CMP affects OF, SF, ZF, AF, PF and CF
const CF_SHIFT: usize = 0;
const PF_SHIFT: usize = 2;
const AF_SHIFT: usize = 4;
const ZF_SHIFT: usize = 6;
const SF_SHIFT: usize = 7;
const OF_SHIFT: usize = 11;
const CF: u64 = 1 << CF_SHIFT;
const PF: u64 = 1 << PF_SHIFT;
const AF: u64 = 1 << AF_SHIFT;
const ZF: u64 = 1 << ZF_SHIFT;
const SF: u64 = 1 << SF_SHIFT;
const OF: u64 = 1 << OF_SHIFT;
const FLAGS_MASK: u64 = CF | PF | AF | ZF | SF | OF;
// TODO: Switch to inline asm when that's stable. Executing CMP (or any arthimetic instructions)

15
hypervisor/src/arch/x86/regs.rs
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@ -15,3 +15,18 @@ pub const CR0_PG: u64 = 0x80000000;
// CR4 bits
pub const CR4_PAE: u64 = 0x20;
pub const CR4_LA57: u64 = 0x1000;
// RFlags bits
pub const CF_SHIFT: usize = 0;
pub const PF_SHIFT: usize = 2;
pub const AF_SHIFT: usize = 4;
pub const ZF_SHIFT: usize = 6;
pub const SF_SHIFT: usize = 7;
pub const OF_SHIFT: usize = 11;
pub const CF: u64 = 1 << CF_SHIFT;
pub const PF: u64 = 1 << PF_SHIFT;
pub const AF: u64 = 1 << AF_SHIFT;
pub const ZF: u64 = 1 << ZF_SHIFT;
pub const SF: u64 = 1 << SF_SHIFT;
pub const OF: u64 = 1 << OF_SHIFT;