4 files changed, 63 insertions, 0 deletions
diff --git a/rtic-macros/src/syntax/backend/cortex.rs b/rtic-macros/src/syntax/backend/cortex.rs
new file mode 100644
index 0000000..b53e927
--- /dev/null
+++ b/rtic-macros/src/syntax/backend/cortex.rs
@@ -0,0 +1,16 @@
+use syn::{
+    parse::{Parse, ParseStream},
+    Error, Result,
+};
+
+#[derive(Debug)]
+pub struct BackendArgs();
+
+impl Parse for BackendArgs {
+    fn parse(input: ParseStream) -> Result<Self> {
+        Err(Error::new(
+            input.span(),
+            "cortex backend does not accept any arguments",
+        ))
+    }
+}
diff --git a/rtic-macros/src/syntax/backend/esp32c3.rs b/rtic-macros/src/syntax/backend/esp32c3.rs
new file mode 100644
index 0000000..33143f4
--- /dev/null
+++ b/rtic-macros/src/syntax/backend/esp32c3.rs
@@ -0,0 +1,16 @@
+use syn::{
+    parse::{Parse, ParseStream},
+    Error, Result,
+};
+
+#[derive(Debug)]
+pub struct BackendArgs();
+
+impl Parse for BackendArgs {
+    fn parse(input: ParseStream) -> Result<Self> {
+        Err(Error::new(
+            input.span(),
+            "esp32c3 backend does not accept any arguments",
+        ))
+    }
+}
diff --git a/rtic-macros/src/syntax/backend/riscv_slic.rs b/rtic-macros/src/syntax/backend/riscv_slic.rs
new file mode 100644
index 0000000..2ed8e77
--- /dev/null
+++ b/rtic-macros/src/syntax/backend/riscv_slic.rs
@@ -0,0 +1,16 @@
+use syn::{
+    parse::{Parse, ParseStream},
+    Ident, Result,
+};
+
+#[derive(Debug)]
+pub struct BackendArgs {
+    pub hart_id: Ident,
+}
+
+impl Parse for BackendArgs {
+    fn parse(input: ParseStream) -> Result<Self> {
+        let hart_id = input.parse()?;
+        Ok(BackendArgs { hart_id })
+    }
+}
diff --git a/rtic-macros/src/syntax/backend/template.rs b/rtic-macros/src/syntax/backend/template.rs
new file mode 100644
index 0000000..6dad114
--- /dev/null
+++ b/rtic-macros/src/syntax/backend/template.rs
@@ -0,0 +1,15 @@
+use syn::{
+    parse::{Parse, ParseStream},
+    Result,
+};
+
+#[derive(Debug)]
+pub struct BackendArgs {
+    // Define your backend-specific input here
+}
+
+impl Parse for BackendArgs {
+    fn parse(input: ParseStream) -> Result<Self> {
+        todo!("define how to parse your backend-specific arguments")
+    }
+}