Add get_processed_sibling_instruction syscall (#22859)

sdk/program/src/program_stubs.rs

@@ -91,6 +91,12 @@ pub trait SyscallStubs: Sync + Send {
     fn sol_log_data(&self, fields: &[&[u8]]) {
         println!("data: {}", fields.iter().map(base64::encode).join(" "));
     }
+    fn sol_get_processed_sibling_instruction(&self, _index: usize) -> Option<Instruction> {
+        None
+    }
+    fn sol_get_stack_height(&self) -> u64 {
+        0
+    }
 }
 
 struct DefaultSyscallStubs {}
@@ -177,6 +183,17 @@ pub(crate) fn sol_log_data(data: &[&[u8]]) {
     SYSCALL_STUBS.read().unwrap().sol_log_data(data)
 }
 
+pub(crate) fn sol_get_processed_sibling_instruction(index: usize) -> Option<Instruction> {
+    SYSCALL_STUBS
+        .read()
+        .unwrap()
+        .sol_get_processed_sibling_instruction(index)
+}
+
+pub(crate) fn sol_get_stack_height() -> u64 {
+    SYSCALL_STUBS.read().unwrap().sol_get_stack_height()
+}
+
 /// Check that two regions do not overlap.
 ///
 /// Adapted from libcore, hidden to share with bpf_loader without being part of