examples/create_process/src/main.zig


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// SPDX-FileCopyrightText: 2024 Himbeer <himbeer@disroot.org>
//
// SPDX-License-Identifier: AGPL-3.0-or-later

const program2 = @embedFile("program2");
var buf: [program2.len]u8 = undefined;

export fn _start() void {
    main();
}

pub fn main() void {
    const msg = "Hello from program 1";
    asm volatile (
        \\ li a7, 100001
        \\ ecall
        :
        : [ptr] "{a0}" (msg.ptr),
          [len] "{a1}" (msg.len),
        : "a7"
    );

    @memcpy(buf[0..], program2);

    asm volatile (
        \\ li a7, 100002
        \\ ecall
        :
        : [bytes] "{a0}" (&buf),
          [len] "{a1}" (buf.len),
        : "a7"
    );

    asm volatile (
        \\ li a7, 100003
        \\ ecall
        ::: "a7", "a1");
}