diff options
Diffstat (limited to 'src/protected_mode/mod.rs')
| -rw-r--r-- | src/protected_mode/mod.rs | 85 |
1 files changed, 83 insertions, 2 deletions
diff --git a/src/protected_mode/mod.rs b/src/protected_mode/mod.rs index 2403a8a..b0a3f62 100644 --- a/src/protected_mode/mod.rs +++ b/src/protected_mode/mod.rs @@ -450,14 +450,14 @@ impl SaeMode { /// a human-friendly label for this `SaeMode`: /// /// ``` - /// use yaxpeax_x86::long_mode::SaeMode; + /// use yaxpeax_x86::protected_mode::SaeMode; /// /// assert_eq!(SaeMode::RoundNearest.label(), "{rne-sae}"); /// assert_eq!(SaeMode::RoundDown.label(), "{rd-sae}"); /// assert_eq!(SaeMode::RoundUp.label(), "{ru-sae}"); /// assert_eq!(SaeMode::RoundZero.label(), "{rz-sae}"); /// ``` - pub fn label(&self) -> &'static str { + pub const fn label(&self) -> &'static str { match self { SaeMode::RoundNearest => "{rne-sae}", SaeMode::RoundDown => "{rd-sae}", @@ -477,6 +477,42 @@ impl SaeMode { SAE_MODES[idx] } } + +pub trait OperandVisitor { + type Ok; + type Error; + + fn visit_reg(&mut self, reg: RegSpec) -> Result<Self::Ok, Self::Error>; + fn visit_deref(&mut self, reg: RegSpec) -> Result<Self::Ok, Self::Error>; + fn visit_disp(&mut self, reg: RegSpec, disp: i32) -> Result<Self::Ok, Self::Error>; + fn visit_reg_scale(&mut self, reg: RegSpec, scale: u8) -> Result<Self::Ok, Self::Error>; + fn visit_index_base_scale(&mut self, base: RegSpec, index: RegSpec, scale: u8) -> Result<Self::Ok, Self::Error>; + fn visit_index_base_scale_disp(&mut self, base: RegSpec, index: RegSpec, scale: u8, disp: i32) -> Result<Self::Ok, Self::Error>; + fn visit_reg_scale_disp(&mut self, reg: RegSpec, scale: u8, disp: i32) -> Result<Self::Ok, Self::Error>; + fn visit_i8(&mut self, imm: i8) -> Result<Self::Ok, Self::Error>; + fn visit_u8(&mut self, imm: u8) -> Result<Self::Ok, Self::Error>; + fn visit_i16(&mut self, imm: i16) -> Result<Self::Ok, Self::Error>; + fn visit_u16(&mut self, imm: u16) -> Result<Self::Ok, Self::Error>; + fn visit_i32(&mut self, imm: i32) -> Result<Self::Ok, Self::Error>; + fn visit_u32(&mut self, imm: u32) -> Result<Self::Ok, Self::Error>; + fn visit_abs_u16(&mut self, imm: u16) -> Result<Self::Ok, Self::Error>; + fn visit_abs_u32(&mut self, imm: u32) -> Result<Self::Ok, Self::Error>; + fn visit_reg_mask_merge(&mut self, base: RegSpec, mask: RegSpec, merge_mode: MergeMode) -> Result<Self::Ok, Self::Error>; + fn visit_reg_mask_merge_sae(&mut self, base: RegSpec, mask: RegSpec, merge_mode: MergeMode, sae_mode: SaeMode) -> Result<Self::Ok, Self::Error>; + fn visit_reg_mask_merge_sae_noround(&mut self, base: RegSpec, mask: RegSpec, merge_mode: MergeMode) -> Result<Self::Ok, Self::Error>; + fn visit_reg_disp_masked(&mut self, base: RegSpec, disp: i32, mask_reg: RegSpec) -> Result<Self::Ok, Self::Error>; + fn visit_reg_deref_masked(&mut self, base: RegSpec, mask_reg: RegSpec) -> Result<Self::Ok, Self::Error>; + fn visit_reg_scale_masked(&mut self, base: RegSpec, scale: u8, mask_reg: RegSpec) -> Result<Self::Ok, Self::Error>; + fn visit_reg_scale_disp_masked(&mut self, base: RegSpec, scale: u8, disp: i32, mask_reg: RegSpec) -> Result<Self::Ok, Self::Error>; + fn visit_index_base_masked(&mut self, base: RegSpec, index: RegSpec, mask_reg: RegSpec) -> Result<Self::Ok, Self::Error>; + fn visit_index_base_disp_masked(&mut self, base: RegSpec, index: RegSpec, disp: i32, mask_reg: RegSpec) -> Result<Self::Ok, Self::Error>; + fn visit_index_base_scale_masked(&mut self, base: RegSpec, index: RegSpec, scale: u8, mask_reg: RegSpec) -> Result<Self::Ok, Self::Error>; + fn visit_index_base_scale_disp_masked(&mut self, base: RegSpec, index: RegSpec, scale: u8, disp: i32, mask_reg: RegSpec) -> Result<Self::Ok, Self::Error>; + fn visit_absolute_far_address(&mut self, segment: u16, address: u32) -> Result<Self::Ok, Self::Error>; + + fn visit_other(&mut self) -> Result<Self::Ok, Self::Error>; +} + impl Operand { fn from_spec(inst: &Instruction, spec: OperandSpec) -> Operand { match spec { @@ -700,6 +736,51 @@ impl Operand { } } } + + /// provided for parity with [`Instruction::visit_operand`]. this has little utility other than + /// to reuse an `OperandVisitor` on an `Operand` directly. + pub fn visit<T: OperandVisitor>(&self, visitor: &mut T) -> Result<T::Ok, T::Error> { + match self { + Operand::Nothing => { + visitor.visit_other() + } + Operand::Register(reg) => { + visitor.visit_reg(*reg) + } + Operand::RegDeref(reg) => { + visitor.visit_deref(*reg) + } + Operand::RegDisp(reg, disp) => { + visitor.visit_disp(*reg, *disp) + } + Operand::ImmediateI8(imm) => visitor.visit_i8(*imm), + Operand::ImmediateU8(imm) => visitor.visit_u8(*imm), + Operand::ImmediateI16(imm) => visitor.visit_i16(*imm), + Operand::ImmediateU16(imm) => visitor.visit_u16(*imm), + Operand::ImmediateI32(imm) => visitor.visit_i32(*imm), + Operand::ImmediateU32(imm) => visitor.visit_u32(*imm), + Operand::DisplacementU16(disp) => visitor.visit_abs_u16(*disp), + Operand::DisplacementU32(disp) => visitor.visit_abs_u32(*disp), + Operand::RegScale(reg, scale) => visitor.visit_reg_scale(*reg, *scale), + Operand::RegScaleDisp(reg, scale, disp) => visitor.visit_reg_scale_disp(*reg, *scale, *disp), + Operand::RegIndexBase(_, _) => { /* not actually reachable anymore */ visitor.visit_other() }, + Operand::RegIndexBaseDisp(_, _, _) => { /* not actually reachable anymore */ visitor.visit_other() }, + Operand::RegIndexBaseScale(base, index, scale) => visitor.visit_index_base_scale(*base, *index, *scale), + Operand::RegIndexBaseScaleDisp(base, index, scale, disp) => visitor.visit_index_base_scale_disp(*base, *index, *scale, *disp), + Operand::RegisterMaskMerge(reg, mask, merge) => visitor.visit_reg_mask_merge(*reg, *mask, *merge), + Operand::RegisterMaskMergeSae(reg, mask, merge, sae) => visitor.visit_reg_mask_merge_sae(*reg, *mask, *merge, *sae), + Operand::RegisterMaskMergeSaeNoround(reg, mask, merge) => visitor.visit_reg_mask_merge_sae_noround(*reg, *mask, *merge), + Operand::RegDerefMasked(reg, mask) => visitor.visit_reg_deref_masked(*reg, *mask), + Operand::RegDispMasked(reg, disp, mask) => visitor.visit_reg_disp_masked(*reg, *disp, *mask), + Operand::RegScaleMasked(reg, scale, mask) => visitor.visit_reg_scale_masked(*reg, *scale, *mask), + Operand::RegIndexBaseMasked(_, _, _) => { /* not actually reachable anymore */ visitor.visit_other() }, + Operand::RegIndexBaseDispMasked(_, _, _, _) => { /* not actually reachable anymore */ visitor.visit_other() }, + Operand::RegScaleDispMasked(base, scale, disp, mask) => visitor.visit_reg_scale_disp_masked(*base, *scale, *disp, *mask), + Operand::RegIndexBaseScaleMasked(base, index, scale, mask) => visitor.visit_index_base_scale_masked(*base, *index, *scale, *mask), + Operand::RegIndexBaseScaleDispMasked(base, index, scale, disp, mask) => visitor.visit_index_base_scale_disp_masked(*base, *index, *scale, *disp, *mask), + Operand::AbsoluteFarAddress { segment, address } => visitor.visit_absolute_far_address(*segment, *address), + } + } } #[test] |