From ed285c9fc665e262ed21c7bf5734acb2b7a532db Mon Sep 17 00:00:00 2001
From: hachem <im@hachem.wtf>
Date: Fri, 25 Sep 2026 11:31:59 +0200
Subject: feat: load + run native ELF binaries

---
 build.zig | 27 ++++++++++++++++++++++++---
 1 file changed, 24 insertions(+), 3 deletions(-)

(limited to 'build.zig')

diff --git a/build.zig b/build.zig
index 46322a7..6d33ab7 100644
--- a/build.zig
+++ b/build.zig
@@ -63,12 +63,33 @@ pub fn build(b: *std.Build) void {
         .link_libc = false,
     });
     bridge_mod.addImport("revo", revo_mod);
-    // the OS source lives in kernel/*.rv; @embedFile("kernel_main") in the bridge
-    // pulls it in at build time (an anonymous import lets it cross the module dir)
-    bridge_mod.addAnonymousImport("kernel_main", .{ .root_source_file = b.path("kernel/main.rv") });
+    inline for (.{
+        .{ "k_font", "kernel/font.rv" },
+        .{ "k_console", "kernel/console.rv" },
+        .{ "k_vmm", "kernel/vmm.rv" },
+        .{ "k_proc", "kernel/proc.rv" },
+        .{ "k_shell", "kernel/shell.rv" },
+        .{ "k_input", "kernel/input.rv" },
+        .{ "k_main", "kernel/main.rv" },
+    }) |e| {
+        bridge_mod.addAnonymousImport(e[0], .{ .root_source_file = b.path(e[1]) });
+    }
 
     kernel.root_module.addImport("bridge", bridge_mod);
 
+    const cc = b.addSystemCommand(&.{
+        "zig",                  "cc",
+        "-target",              "x86_64-freestanding",
+        "-ffreestanding",       "-nostdlib",
+        "-static",              "-no-pie",
+        "-fno-stack-protector", "-fno-sanitize=all",
+        "-Wl,-T,user/link.ld",  "-Wl,--build-id=none",
+        "-o",
+    });
+    const program_elf = cc.addOutputFileArg("user_program.elf");
+    cc.addFileArg(b.path("user/program.c"));
+    kernel.root_module.addAnonymousImport("user_program", .{ .root_source_file = program_elf });
+
     b.installArtifact(kernel);
 }
 
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