feat: add bpf-c-noop example

examples/bpf-c-noop/.gitignore

@@ -0,0 +1 @@
+/out/

examples/bpf-c-noop/makefile

@@ -0,0 +1 @@
+include ../../bpf-sdk/bpf.mk

examples/bpf-c-noop/src/noop.c

@@ -0,0 +1,24 @@
+/**
+ * @brief Example C-based BPF program that prints out the parameters
+ * passed to it
+ */
+
+#include <sol_bpf.h>
+
+/**
+ * Number of SolKeyedAccounts expected. The program should bail if an
+ * unexpected number of accounts are passed to the program's entrypoint
+ */
+#define NUM_KA 1
+
+extern bool entrypoint(const uint8_t *input) {
+  SolKeyedAccounts ka[NUM_KA];
+  uint8_t *data;
+  uint64_t data_len;
+
+  if (!sol_deserialize(input, NUM_KA, ka, &data, &data_len)) {
+    return false;
+  }
+  sol_print_params(NUM_KA, ka, data, data_len);
+  return true;
+}

test/bpf-loader.test.js

@@ -25,7 +25,7 @@ test('load BPF program', async () => {
 
   const connection = new Connection(url);
   const from = await newAccountWithTokens(connection);
-  const data = await fs.readFile('test/bin/noop_c.o');
+  const data = await fs.readFile('test/fixtures/noop/noop.o');
   const programId = await BpfLoader.load(connection, from, data);
   const transaction = new Transaction().add({
     keys: [from.publicKey],

test/fixtures/noop/build.sh

@@ -0,0 +1,4 @@
+#!/bin/bash -ex
+
+make -C ../../../examples/bpf-c-noop/
+cp ../../../examples/bpf-c-noop/out/noop.o .