1 files changed, 134 insertions, 0 deletions
diff --git a/src/arm32/unsigned/mod.rs b/src/arm32/unsigned/mod.rs
new file mode 100644
index 0000000..b195bf0
--- /dev/null
+++ b/src/arm32/unsigned/mod.rs
@@ -0,0 +1,134 @@
+// Copyright 2024 Gabriel Bjørnager Jensen.
+//
+// This file is part of Pollex.
+//
+// Pollex is free software: you can redistribute it
+// and/or modify it under the terms of the GNU Af-
+// fero General Public License as published by the
+// Free Software Foundation, either version 3 of
+// the License, or (at your option) any later ver-
+// sion.
+//
+// Pollex is distributed in the hope that it will
+// be useful, but WITHOUT ANY WARRANTY; without
+// even the implied warranty of MERCHANTABILITY or
+// FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+// Affero General Public License for more details.
+//
+// You should have received a copy of the GNU Af-
+// fero General Public License along with Pollex.
+// If not, see <https://www.gnu.org/licenses/>.
+
+use crate::arm32::Signed;
+
+use core::cmp::Ordering;
+use core::fmt::{Display, Formatter};
+use core::ops::{Add, Div, Mul, Sub};
+
+/// An unsigned word.
+///
+/// This type defines the [`Add`], [`Sub`], [`Mul`], and [`Div`] traits for `Self` and [`u32`].
+/// Internally, these implementations use wrapping arithemtic.
+#[derive(Clone, Copy, Debug, Eq, PartialEq)]
+#[repr(transparent)]
+pub struct Unsigned(u32);
+
+impl Unsigned {
+ /// Constructs a new word.
+ #[inline(always)]
+ #[must_use]
+ pub const fn new(value: u32) -> Self { Self(value) }
+
+ /// Retrieves the word's value.
+ #[inline(always)]
+ #[must_use]
+ pub const fn get(self) -> u32 { self.0 }
+
+ /// Sets the value of the word.
+ #[inline(always)]
+ pub fn set(&mut self, value: u32) { self.0 = value }
+
+ /// Reinterprets the word as signed.
+ #[allow(clippy::cast_possible_wrap)]
+ #[inline(always)]
+ #[must_use]
+ pub const fn as_signed(self) -> Signed { Signed::new(self.0 as i32) }
+
+ /// Adds a signed offset to the word.
+ #[inline(always)]
+ #[must_use]
+ pub const fn offset(self, value: i32) -> Self { Self(self.get().wrapping_add_signed(value)) }
+}
+
+impl Add<Self> for Unsigned {
+ type Output = Self;
+
+ #[inline(always)]
+ fn add(self, rhs: Self) -> Self::Output { self + rhs.get() }
+}
+
+impl Add<u32> for Unsigned {
+ type Output = Self;
+
+ #[inline(always)]
+ fn add(self, rhs: u32) -> Self::Output { Self(self.0.wrapping_add(rhs)) }
+}
+
+impl Display for Unsigned {
+ #[inline(always)]
+ fn fmt(&self, f: &mut Formatter) -> core::fmt::Result {
+ write!(f, "#{}", self.0)
+ }
+}
+
+impl Div<Self> for Unsigned {
+ type Output = Self;
+
+ #[inline(always)]
+ fn div(self, rhs: Self) -> Self::Output { self / rhs.get() }
+}
+
+impl Div<u32> for Unsigned {
+ type Output = Self;
+
+ #[inline(always)]
+ fn div(self, rhs: u32) -> Self::Output { Self(self.0.wrapping_div(rhs)) }
+}
+
+impl Mul<Self> for Unsigned {
+ type Output = Self;
+
+ #[inline(always)]
+ fn mul(self, rhs: Self) -> Self::Output { self * rhs.get() }
+}
+
+impl Mul<u32> for Unsigned {
+ type Output = Self;
+
+ #[inline(always)]
+ fn mul(self, rhs: u32) -> Self::Output { Self(self.0.wrapping_mul(rhs)) }
+}
+
+impl PartialEq<u32> for Unsigned {
+ #[inline(always)]
+ fn eq(&self, other: &u32) -> bool { self.0 == *other }
+}
+
+impl PartialOrd<u32> for Unsigned {
+ #[inline(always)]
+ fn partial_cmp(&self, other: &u32) -> Option<Ordering> { self.0.partial_cmp(other) }
+}
+
+impl Sub<Self> for Unsigned {
+ type Output = Self;
+
+ #[inline(always)]
+ fn sub(self, rhs: Self) -> Self::Output { self - rhs.get() }
+}
+
+impl Sub<u32> for Unsigned {
+ type Output = Self;
+
+ #[inline(always)]
+ fn sub(self, rhs: u32) -> Self::Output { Self(self.0.wrapping_sub(rhs)) }
+}