From 30b4b736ad7fc84d2b35d734f2fde9737a387415 Mon Sep 17 00:00:00 2001
From: Patrick Weber <patrick.weber2@stud.sbg.ac.at>
Date: Tue, 13 Feb 2024 13:06:21 +0100
Subject: [PATCH] Added 32 bit support which is needed for unicorn.

---
 src/decode.rs | 1 +
 src/elf.rs    | 6 ++++--
 2 files changed, 5 insertions(+), 2 deletions(-)

diff --git a/src/decode.rs b/src/decode.rs
index dcfa7d1..a627b2b 100644
--- a/src/decode.rs
+++ b/src/decode.rs
@@ -21,6 +21,7 @@ use thiserror::Error;
 
 pub const INSTRUCTION_SIZE: usize = 4;
 pub const WORD_SIZE: usize = 8;
+pub const WORD_SIZE32BIT: usize = 4;
 
 #[derive(Clone, Copy, Debug, Eq, Hash, PartialEq, Error)]
 pub enum DecodingError {
diff --git a/src/elf.rs b/src/elf.rs
index dc9eb50..6484dc5 100644
--- a/src/elf.rs
+++ b/src/elf.rs
@@ -21,6 +21,7 @@ pub struct Program {
     pub code: ProgramSegment<u8>,
     pub data: ProgramSegment<u8>,
     pub instruction_range: Range<u64>,
+    pub is64: bool,
 }
 
 impl Program {
@@ -81,9 +82,9 @@ where
 }
 
 fn extract_program(raw: &[u8], elf: &Elf) -> Result<Program, RiscuError> {
-    if elf.is_lib || !elf.is_64 || !elf.little_endian {
+    if elf.is_lib || !elf.little_endian {
         return Err(RiscuError::InvalidRiscu(
-            "has to be an executable, 64bit, static, little endian binary",
+            "has to be an executable, little endian binary",
         ));
     }
 
@@ -192,6 +193,7 @@ fn extract_program(raw: &[u8], elf: &Elf) -> Result<Program, RiscuError> {
             content: [data_segment.to_vec(), vec![0; data_padding]].concat(),
         },
         instruction_range,
+        is64: elf.is_64,
     })
 }