example: Add create_process example program collection

2 files changed, 49 insertions, 0 deletions

diff --git a/examples/create_process/src/main.zig b/examples/create_process/src/main.zig
new file mode 100644
index 0000000..b806ca3
--- /dev/null
+++ b/examples/create_process/src/main.zig
@@ -0,0 +1,30 @@
+// SPDX-FileCopyrightText: 2024 Himbeer <himbeer@disroot.org>
+//
+// SPDX-License-Identifier: AGPL-3.0-or-later
+
+export fn _start() void {
+    main();
+}
+
+pub fn main() void {
+    const msg = "Hello from program 1\r\n";
+    asm volatile (
+        \\ li a7, 100000
+        \\ ecall
+        :
+        : [ptr] "{a0}" (msg.ptr),
+          [len] "{a1}" (msg.len),
+        : "a7"
+    );
+
+    const path = "/process/create\x00";
+    const program = "/userinit/program2\x00";
+    asm volatile (
+        \\ li a7, 100001
+        \\ ecall
+        :
+        : [path] "{a0}" (path.ptr),
+          [program] "{a1}" (program.ptr),
+        : "a7"
+    );
+}
diff --git a/examples/create_process/src/main2.zig b/examples/create_process/src/main2.zig
new file mode 100644
index 0000000..d8efab7
--- /dev/null
+++ b/examples/create_process/src/main2.zig
@@ -0,0 +1,19 @@
+// SPDX-FileCopyrightText: 2024 Himbeer <himbeer@disroot.org>
+//
+// SPDX-License-Identifier: AGPL-3.0-or-later
+
+export fn _start() void {
+    main();
+}
+
+pub fn main() void {
+    const msg = "Hello from program 2\r\n";
+    asm volatile (
+        \\ li a7, 100000
+        \\ ecall
+        :
+        : [ptr] "{a0}" (msg.ptr),
+          [len] "{a1}" (msg.len),
+        : "a7"
+    );
+}