From f038c7c9a9646c2a126d693eab7d297cd25565e3 Mon Sep 17 00:00:00 2001
From: Joe Rozner <joe@deadbytes.net>
Date: Tue, 20 Aug 2024 21:55:05 -0700
Subject: Add msp430 architecture

---
 arch/msp430/src/flag.rs | 153 ++++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 153 insertions(+)
 create mode 100644 arch/msp430/src/flag.rs

(limited to 'arch/msp430/src/flag.rs')

diff --git a/arch/msp430/src/flag.rs b/arch/msp430/src/flag.rs
new file mode 100644
index 00000000..115fe866
--- /dev/null
+++ b/arch/msp430/src/flag.rs
@@ -0,0 +1,153 @@
+use binaryninja::architecture;
+use binaryninja::architecture::FlagRole;
+
+use std::borrow::Cow;
+use std::collections::HashMap;
+
+// NOTE: GIE, CPUOFF, OSCOFF, SG0, and SG1 not implemented as it's not clear how they would be used
+#[derive(Debug, Clone, Copy, PartialEq, Eq, Hash)]
+pub enum Flag {
+    C,
+    Z,
+    N,
+    V,
+}
+
+impl architecture::Flag for Flag {
+    type FlagClass = FlagClass;
+
+    fn name(&self) -> Cow<str> {
+        match self {
+            Self::C => "c".into(),
+            Self::Z => "z".into(),
+            Self::N => "n".into(),
+            Self::V => "v".into(),
+        }
+    }
+
+    fn role(&self, _class: Option<Self::FlagClass>) -> architecture::FlagRole {
+        match self {
+            Self::C => FlagRole::CarryFlagRole,
+            Self::Z => FlagRole::ZeroFlagRole,
+            Self::N => FlagRole::NegativeSignFlagRole,
+            Self::V => FlagRole::OverflowFlagRole,
+        }
+    }
+
+    fn id(&self) -> u32 {
+        match self {
+            Self::C => 0,
+            Self::Z => 1,
+            Self::N => 2,
+            Self::V => 8,
+        }
+    }
+}
+
+impl TryFrom<u32> for Flag {
+    type Error = ();
+    fn try_from(flag: u32) -> Result<Self, Self::Error> {
+        match flag {
+            0 => Ok(Self::C),
+            1 => Ok(Self::Z),
+            2 => Ok(Self::N),
+            8 => Ok(Self::V),
+            _ => Err(()),
+        }
+    }
+}
+
+#[derive(Debug, Clone, Copy, PartialEq, Eq, Hash)]
+pub struct FlagClass {}
+
+impl architecture::FlagClass for FlagClass {
+    fn name(&self) -> Cow<str> {
+        unimplemented!()
+    }
+
+    fn id(&self) -> u32 {
+        unimplemented!()
+    }
+}
+
+#[derive(Debug, Clone, Copy, PartialEq, Eq, Hash)]
+pub enum FlagGroup {}
+
+impl architecture::FlagGroup for FlagGroup {
+    type FlagType = Flag;
+    type FlagClass = FlagClass;
+
+    fn name(&self) -> Cow<str> {
+        unimplemented!()
+    }
+
+    fn id(&self) -> u32 {
+        unimplemented!()
+    }
+
+    fn flags_required(&self) -> Vec<Self::FlagType> {
+        unimplemented!()
+    }
+
+    fn flag_conditions(&self) -> HashMap<Self::FlagClass, architecture::FlagCondition> {
+        unimplemented!()
+    }
+}
+
+#[derive(Debug, Clone, Copy, PartialEq, Eq, Hash)]
+pub enum FlagWrite {
+    All,
+    Nz,
+    Nvz,
+    Cnz,
+}
+
+impl architecture::FlagWrite for FlagWrite {
+    type FlagType = Flag;
+    type FlagClass = FlagClass;
+
+    fn name(&self) -> Cow<str> {
+        match self {
+            Self::All => "*".into(),
+            Self::Nz => "nz".into(),
+            Self::Nvz => "nvz".into(),
+            Self::Cnz => "cnz".into(),
+        }
+    }
+
+    fn class(&self) -> Option<Self::FlagClass> {
+        None
+    }
+
+    fn id(&self) -> u32 {
+        match self {
+            Self::All => 1,
+            Self::Nz => 2,
+            Self::Nvz => 3,
+            Self::Cnz => 4,
+        }
+    }
+
+    fn flags_written(&self) -> Vec<Self::FlagType> {
+        match self {
+            Self::All => vec![Flag::C, Flag::N, Flag::V, Flag::Z],
+            Self::Nz => vec![Flag::N, Flag::Z],
+            Self::Nvz => vec![Flag::N, Flag::V, Flag::Z],
+            Self::Cnz => vec![Flag::C, Flag::N, Flag::Z],
+        }
+    }
+}
+
+impl TryFrom<u32> for FlagWrite {
+    type Error = ();
+
+    fn try_from(value: u32) -> Result<Self, Self::Error> {
+        match value {
+            1 => Ok(Self::All),
+            2 => Ok(Self::Nz),
+            3 => Ok(Self::Nvz),
+            4 => Ok(Self::Cnz),
+            _ => Err(()),
+        }
+    }
+}
-- 
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