From e0527bf91b0add70f753c2a51033e5e9ee5638b2 Mon Sep 17 00:00:00 2001
From: Ulrich Mohr <mohr@irs.uni-stuttgart.de>
Date: Fri, 27 Oct 2023 17:02:48 +0200
Subject: [PATCH] rust lib

---
 CMakeLists.txt                  |  3 ++-
 mission/main.cpp                |  6 +++++
 mission_rust/.cargo/config.toml |  5 ++++
 mission_rust/.gitignore         |  1 +
 mission_rust/CMakeLists.txt     | 11 +++++++++
 mission_rust/Cargo.lock         | 16 ++++++++++++
 mission_rust/Cargo.toml         | 12 +++++++++
 mission_rust/src/lib.rs         | 43 +++++++++++++++++++++++++++++++++
 8 files changed, 96 insertions(+), 1 deletion(-)
 create mode 100644 mission_rust/.cargo/config.toml
 create mode 100644 mission_rust/.gitignore
 create mode 100644 mission_rust/CMakeLists.txt
 create mode 100644 mission_rust/Cargo.lock
 create mode 100644 mission_rust/Cargo.toml
 create mode 100644 mission_rust/src/lib.rs

diff --git a/CMakeLists.txt b/CMakeLists.txt
index 0452f9e..4cb09a9 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -97,6 +97,7 @@ add_subdirectory(fsfw)
 add_subdirectory(common)
 
 add_subdirectory(${MISSION_PATH})
+add_subdirectory(mission_rust)
 
 # ##############################################################################
 # Post-Sources preparation
@@ -105,7 +106,7 @@ add_subdirectory(${MISSION_PATH})
 # Add libraries for all sources.
 target_link_libraries(lwip PUBLIC freertos_kernel)
 target_link_libraries(fsfw PUBLIC lwip)
-target_link_libraries(${TARGET_NAME} PUBLIC fsfw lwip)
+target_link_libraries(${TARGET_NAME} PUBLIC fsfw lwip mission_rust)
 
 target_include_directories(
     ${TARGET_NAME} PUBLIC ${BSP_PATH})
diff --git a/mission/main.cpp b/mission/main.cpp
index ef8e589..29c6390 100644
--- a/mission/main.cpp
+++ b/mission/main.cpp
@@ -189,10 +189,16 @@ int main(void) {
 
 void testIp();
 
+extern "C" {
+void rust_main(double i);
+}
+
 void mission(void *){
 
   printf("Starting Mission\n");
 
+  rust_main(123456879123456789);
+
   testIp();
 
   sif::debug << "OStreams working" << std::endl;
diff --git a/mission_rust/.cargo/config.toml b/mission_rust/.cargo/config.toml
new file mode 100644
index 0000000..9941ccc
--- /dev/null
+++ b/mission_rust/.cargo/config.toml
@@ -0,0 +1,5 @@
+[build]
+target = "armv7a-none-eabihf"
+
+[unstable]
+build-std = ["core"]
\ No newline at end of file
diff --git a/mission_rust/.gitignore b/mission_rust/.gitignore
new file mode 100644
index 0000000..9f97022
--- /dev/null
+++ b/mission_rust/.gitignore
@@ -0,0 +1 @@
+target/
\ No newline at end of file
diff --git a/mission_rust/CMakeLists.txt b/mission_rust/CMakeLists.txt
new file mode 100644
index 0000000..7093c55
--- /dev/null
+++ b/mission_rust/CMakeLists.txt
@@ -0,0 +1,11 @@
+add_custom_target(
+    mission_rust_internal
+    COMMAND cargo build $<$<CONFIG:Release>:--release>
+    WORKING_DIRECTORY ${CMAKE_CURRENT_SOURCE_DIR}
+)
+
+add_library(mission_rust INTERFACE)
+
+add_dependencies(mission_rust mission_rust_internal)
+
+target_link_libraries(mission_rust INTERFACE ${CMAKE_CURRENT_SOURCE_DIR}/target/armv7a-none-eabihf/$<IF:$<CONFIG:Release>,release,debug>/libmission_rust.a)
\ No newline at end of file
diff --git a/mission_rust/Cargo.lock b/mission_rust/Cargo.lock
new file mode 100644
index 0000000..4427a22
--- /dev/null
+++ b/mission_rust/Cargo.lock
@@ -0,0 +1,16 @@
+# This file is automatically @generated by Cargo.
+# It is not intended for manual editing.
+version = 3
+
+[[package]]
+name = "cty"
+version = "0.2.2"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "b365fabc795046672053e29c954733ec3b05e4be654ab130fe8f1f94d7051f35"
+
+[[package]]
+name = "mission_rust"
+version = "0.1.0"
+dependencies = [
+ "cty",
+]
diff --git a/mission_rust/Cargo.toml b/mission_rust/Cargo.toml
new file mode 100644
index 0000000..a625263
--- /dev/null
+++ b/mission_rust/Cargo.toml
@@ -0,0 +1,12 @@
+[package]
+name = "mission_rust"
+version = "0.1.0"
+edition = "2021"
+
+[lib]
+crate-type = ["staticlib"]
+
+# See more keys and their definitions at https://doc.rust-lang.org/cargo/reference/manifest.html
+
+[dependencies]
+cty = "0.2.2"
diff --git a/mission_rust/src/lib.rs b/mission_rust/src/lib.rs
new file mode 100644
index 0000000..1ca9189
--- /dev/null
+++ b/mission_rust/src/lib.rs
@@ -0,0 +1,43 @@
+#![no_std]
+
+use core::panic::PanicInfo;
+
+#[panic_handler]
+fn panic(_panic: &PanicInfo<'_>) -> ! {
+    loop {}
+}
+
+extern "C" {
+    pub fn outbyte(c: cty::c_char);
+}
+
+#[no_mangle]
+pub extern "C" fn rust_main(i: cty::c_double) {
+    mission(i);
+}
+
+struct Outbytes {}
+
+use core::fmt::{Error, Write};
+
+impl Write for Outbytes {
+    fn write_str(&mut self, s: &str) -> Result<(), Error> {
+        for c in s.as_bytes() {
+            unsafe {
+                outbyte(*c);
+            }
+        }
+        Ok(())
+    }
+}
+
+fn mission(i: f64) {
+    for byte in "abcd\n".bytes() {
+        unsafe {
+            outbyte(byte);
+        }
+    }
+    let mut stdout = Outbytes {};
+    
+    let _ok = writeln!(&mut stdout, "I got {}!", i);
+}