Add Cross-program invocations (#9582)

programs/bpf/rust/invoked/src/instruction.rs

@@ -0,0 +1,28 @@
+//! @brief Example Rust-based BPF program that issues a cross-program-invocation
+
+use solana_sdk::{
+    instruction::{AccountMeta, Instruction},
+    pubkey::Pubkey,
+};
+
+pub fn create_instruction(
+    program_id: Pubkey,
+    arguments: &[(&Pubkey, bool, bool)],
+    data: Vec<u8>,
+) -> Instruction {
+    let accounts = arguments
+        .iter()
+        .map(|(key, is_writable, is_signer)| {
+            if *is_writable {
+                AccountMeta::new(**key, *is_signer)
+            } else {
+                AccountMeta::new_readonly(**key, *is_signer)
+            }
+        })
+        .collect();
+    Instruction {
+        program_id,
+        accounts,
+        data,
+    }
+}