init

.gitignore

@@ -0,0 +1 @@
+0x??

Makefile

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+%.o: %.asm
+	nasm -felf64 $<
+%: %.o
+	gcc -z noexecstack -o $@ $<
+
+template:
+	@echo "Copy template.asm to \$$name.asm and run \`make \$$name\`"
+.PHONY: template

flake.lock

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+{
+  "nodes": {
+    "nixpkgs": {
+      "locked": {
+        "lastModified": 1694593561,
+        "narHash": "sha256-WSaIQZ5s9N9bDFkEMTw6P9eaZ9bv39ZhsiW12GtTNM0=",
+        "owner": "NixOS",
+        "repo": "nixpkgs",
+        "rev": "1697b7d480449b01111e352021f46e5879e47643",
+        "type": "github"
+      },
+      "original": {
+        "id": "nixpkgs",
+        "type": "indirect"
+      }
+    },
+    "root": {
+      "inputs": {
+        "nixpkgs": "nixpkgs"
+      }
+    }
+  },
+  "root": "root",
+  "version": 7
+}

flake.nix

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+{
+  description = "xchg rax, rax";
+
+  outputs = { self, nixpkgs, ... }:
+    let
+      supportedSystems = [ "x86_64-linux" ];
+      forAllSystems = nixpkgs.lib.genAttrs supportedSystems;
+    in
+    {
+      devShells = forAllSystems (system:
+        let
+          pkgs = nixpkgs.legacyPackages.${system};
+        in
+        {
+          default = pkgs.mkShell {
+            buildInputs = with pkgs;
+              [
+                gdb
+                gnumake
+                nasm
+              ];
+          };
+        });
+    };
+}

template.asm

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+	BITS 64
+	SECTION .text
+	global main
+
+main:
+	xor eax, eax