Add a Rust component in the runtime.

artiq/runtime.rs/Cargo.lock

@@ -0,0 +1,18 @@
+[root]
+name = "runtime"
+version = "0.0.0"
+dependencies = [
+ "std_artiq 0.0.0",
+]
+
+[[package]]
+name = "alloc_artiq"
+version = "0.0.0"
+
+[[package]]
+name = "std_artiq"
+version = "0.0.0"
+dependencies = [
+ "alloc_artiq 0.0.0",
+]
+

artiq/runtime.rs/Cargo.toml

@@ -0,0 +1,16 @@
+[package]
+authors = ["The ARTIQ Project Developers"]
+name = "runtime"
+version = "0.0.0"
+
+[lib]
+name = "artiq_rust"
+crate-type = ["staticlib"]
+path = "src/lib.rs"
+
+[dependencies]
+std_artiq = { path = "libstd_artiq" }
+
+[profile.dev]
+panic = 'abort'
+opt-level = 2

artiq/runtime.rs/liballoc_artiq/Cargo.toml

@@ -0,0 +1,8 @@
+[package]
+authors = ["The ARTIQ Project Developers"]
+name = "alloc_artiq"
+version = "0.0.0"
+
+[lib]
+name = "alloc_artiq"
+path = "lib.rs"

artiq/runtime.rs/liballoc_artiq/lib.rs

@@ -0,0 +1,86 @@
+#![feature(allocator, libc)]
+#![no_std]
+#![allocator]
+
+// The minimum alignment guaranteed by the architecture.
+const MIN_ALIGN: usize = 8;
+
+#[no_mangle]
+pub extern "C" fn __rust_allocate(size: usize, align: usize) -> *mut u8 {
+    unsafe { imp::allocate(size, align) }
+}
+
+#[no_mangle]
+pub extern "C" fn __rust_deallocate(ptr: *mut u8, old_size: usize, align: usize) {
+    unsafe { imp::deallocate(ptr, old_size, align) }
+}
+
+#[no_mangle]
+pub extern "C" fn __rust_reallocate(ptr: *mut u8,
+                                    old_size: usize,
+                                    size: usize,
+                                    align: usize)
+                                    -> *mut u8 {
+    unsafe { imp::reallocate(ptr, old_size, size, align) }
+}
+
+#[no_mangle]
+pub extern "C" fn __rust_reallocate_inplace(ptr: *mut u8,
+                                            old_size: usize,
+                                            size: usize,
+                                            align: usize)
+                                            -> usize {
+    unsafe { imp::reallocate_inplace(ptr, old_size, size, align) }
+}
+
+#[no_mangle]
+pub extern "C" fn __rust_usable_size(size: usize, align: usize) -> usize {
+    imp::usable_size(size, align)
+}
+
+mod imp {
+    extern crate libc;
+
+    use core::cmp;
+    use core::ptr;
+    use MIN_ALIGN;
+
+    pub unsafe fn allocate(size: usize, align: usize) -> *mut u8 {
+        if align <= MIN_ALIGN {
+            libc::malloc(size as libc::size_t) as *mut u8
+        } else {
+            aligned_malloc(size, align)
+        }
+    }
+
+    unsafe fn aligned_malloc(_size: usize, _align: usize) -> *mut u8 {
+        panic!("aligned_malloc not implemented")
+    }
+
+    pub unsafe fn reallocate(ptr: *mut u8, old_size: usize,
+                             size: usize, align: usize) -> *mut u8 {
+        if align <= MIN_ALIGN {
+            libc::realloc(ptr as *mut libc::c_void, size as libc::size_t) as *mut u8
+        } else {
+            let new_ptr = allocate(size, align);
+            if !new_ptr.is_null() {
+                ptr::copy(ptr, new_ptr, cmp::min(size, old_size));
+                deallocate(ptr, old_size, align);
+            }
+            new_ptr
+        }
+    }
+
+    pub unsafe fn reallocate_inplace(_ptr: *mut u8, old_size: usize,
+                                     _size: usize, _align: usize) -> usize {
+        old_size
+    }
+
+    pub unsafe fn deallocate(ptr: *mut u8, _old_size: usize, _align: usize) {
+        libc::free(ptr as *mut libc::c_void)
+    }
+
+    pub fn usable_size(size: usize, _align: usize) -> usize {
+        size
+    }
+}

artiq/runtime.rs/libstd_artiq/Cargo.toml

@@ -0,0 +1,11 @@
+[package]
+authors = ["The ARTIQ Project Developers"]
+name = "std_artiq"
+version = "0.0.0"
+
+[lib]
+name = "std_artiq"
+path = "lib.rs"
+
+[dependencies]
+alloc_artiq = { path = "../liballoc_artiq" }

artiq/runtime.rs/libstd_artiq/lib.rs

@@ -0,0 +1,64 @@
+#![feature(lang_items, asm, collections, libc, needs_panic_runtime)]
+#![no_std]
+#![needs_panic_runtime]
+
+extern crate alloc_artiq;
+extern crate collections;
+extern crate libc;
+
+pub mod prelude {
+    pub mod v1 {
+        pub use core::prelude::v1::*;
+        pub use collections::*;
+    }
+}
+
+use core::fmt::Write;
+
+#[macro_export]
+macro_rules! print {
+    ($($arg:tt)*) => ($crate::print_fmt(format_args!($($arg)*)));
+}
+
+#[macro_export]
+macro_rules! println {
+    ($fmt:expr) => (print!(concat!($fmt, "\n")));
+    ($fmt:expr, $($arg:tt)*) => (print!(concat!($fmt, "\n"), $($arg)*));
+}
+
+extern {
+    fn putchar(c: libc::c_int) -> libc::c_int;
+    fn readchar() -> libc::c_char;
+}
+
+pub struct Console;
+
+impl core::fmt::Write for Console {
+    fn write_str(&mut self, s: &str) -> Result<(), core::fmt::Error> {
+        for c in s.bytes() { unsafe { putchar(c as i32); } }
+        Ok(())
+    }
+}
+
+pub fn print_fmt(args: self::core::fmt::Arguments) {
+    let _ = Console.write_fmt(args);
+}
+
+#[lang = "panic_fmt"]
+extern fn panic_fmt(args: self::core::fmt::Arguments, file: &'static str, line: u32) -> ! {
+    let _ = write!(Console, "panic at {}:{}: ", file, line);
+    let _ = Console.write_fmt(args);
+    let _ = write!(Console, "\nwaiting for debugger...\n");
+    unsafe {
+        let _ = readchar();
+        loop { asm!("l.trap 0") }
+    }
+}
+
+// Allow linking with crates that are built as -Cpanic=unwind even when the root crate
+// is built with -Cpanic=abort.
+#[allow(non_snake_case)]
+#[no_mangle]
+pub extern "C" fn _Unwind_Resume() -> ! {
+    loop {}
+}

artiq/runtime.rs/src/lib.rs

@@ -0,0 +1,11 @@
+#![no_std]
+
+#[macro_use]
+extern crate std_artiq as std;
+
+use std::prelude::v1::*;
+
+#[no_mangle]
+pub extern "C" fn rust_main() {
+    println!("hello from rust!");
+}

artiq/runtime/Makefile

@@ -27,8 +27,9 @@ all: runtime.bin runtime.fbi
 %.fbi: %.bin
 	@echo " MSCIMG  " $@ && $(PYTHON) -m misoc.tools.mkmscimg -f -o $@ $<
 
-runtime.elf: $(OBJECTS)
+runtime.elf: $(OBJECTS) libartiq_rust.a
 	$(LD) $(LDFLAGS) \
+		--gc-sections \
 		-T $(RUNTIME_DIRECTORY)/runtime.ld \
 		-N -o $@ \
 		../libbase/crt0-$(CPU).o \
@@ -38,7 +39,8 @@ runtime.elf: $(OBJECTS)
 		-L../libm \
 		-L../liballoc \
 		-L../liblwip \
-		-lbase -lm -lcompiler-rt -lalloc -llwip
+		-Lcargo/or1k-unknown-none/debug/ \
+		-lartiq_rust -lbase -lm -lcompiler-rt -lalloc -llwip
 	@chmod -x $@
 
 ksupport.elf: $(OBJECTS_KSUPPORT)
@@ -58,6 +60,14 @@ ksupport.elf: $(OBJECTS_KSUPPORT)
 ksupport_data.o: ksupport.elf
 	$(LD) -r -b binary -o $@ $<
 
+libartiq_rust.a:
+	CARGO_TARGET_DIR="./cargo" \
+		cargo rustc --verbose \
+			--manifest-path $(RUNTIME_DIRECTORY)/../runtime.rs/Cargo.toml \
+			--target=or1k-unknown-none -- \
+			-C target-feature=+mul,+div,+ffl1,+cmov,+addc -C opt-level=s \
+			-L../libcompiler-rt
+
 %.o: $(RUNTIME_DIRECTORY)/%.c
 	$(compile)
 

artiq/runtime/main.c

@@ -262,6 +262,8 @@ static int check_test_mode(void)
 
 extern void _fheap, _eheap;
 
+extern void rust_main();
+
 int main(void)
 {
     irq_setmask(0);
@@ -276,6 +278,9 @@ int main(void)
     puts("Press 't' to enter test mode...");
     blink_led();
 
+    puts("Calling Rust...");
+    rust_main();
+
     if(check_test_mode()) {
         puts("Entering test mode.");
         test_main();

conda/artiq-kc705-nist_clock/meta.yaml

@@ -15,7 +15,9 @@ requirements:
     - migen 0.2
     - misoc 0.2
     - llvm-or1k
-    - binutils-or1k-linux
+    - binutils-or1k-linux >=2.27
+    - rust-core-or1k
+    - cargo
   run:
     - artiq {{ "{tag} py_{number}+git{hash}".format(tag=environ.get("GIT_DESCRIBE_TAG"), number=environ.get("GIT_DESCRIBE_NUMBER"), hash=environ.get("GIT_DESCRIBE_HASH")[1:]) if "GIT_DESCRIBE_TAG" in environ else "" }}
 

conda/artiq-kc705-nist_qc1/meta.yaml

@@ -15,7 +15,9 @@ requirements:
     - migen 0.2
     - misoc 0.2
     - llvm-or1k
-    - binutils-or1k-linux
+    - binutils-or1k-linux >=2.27
+    - rust-core-or1k
+    - cargo
   run:
     - artiq {{ "{tag} py_{number}+git{hash}".format(tag=environ.get("GIT_DESCRIBE_TAG"), number=environ.get("GIT_DESCRIBE_NUMBER"), hash=environ.get("GIT_DESCRIBE_HASH")[1:]) if "GIT_DESCRIBE_TAG" in environ else "" }}
 

conda/artiq-kc705-nist_qc2/meta.yaml

@@ -15,7 +15,9 @@ requirements:
     - migen 0.2
     - misoc 0.2
     - llvm-or1k
-    - binutils-or1k-linux
+    - binutils-or1k-linux >=2.27
+    - rust-core-or1k
+    - cargo
   run:
     - artiq {{ "{tag} py_{number}+git{hash}".format(tag=environ.get("GIT_DESCRIBE_TAG"), number=environ.get("GIT_DESCRIBE_NUMBER"), hash=environ.get("GIT_DESCRIBE_HASH")[1:]) if "GIT_DESCRIBE_TAG" in environ else "" }}
 

conda/artiq-pipistrello-nist_qc1/meta.yaml

@@ -15,7 +15,9 @@ requirements:
     - migen 0.2
     - misoc 0.2
     - llvm-or1k
-    - binutils-or1k-linux
+    - binutils-or1k-linux >=2.27
+    - rust-core-or1k
+    - cargo
   run:
     - artiq {{ "{tag} py_{number}+git{hash}".format(tag=environ.get("GIT_DESCRIBE_TAG"), number=environ.get("GIT_DESCRIBE_NUMBER"), hash=environ.get("GIT_DESCRIBE_HASH")[1:]) if "GIT_DESCRIBE_TAG" in environ else "" }}