feat: add vscode debug

.vscode/launch.json

@@ -0,0 +1,25 @@
+{
+    "version": "0.2.0",
+    "configurations": [
+        {
+            "name": "Debug",
+            "preLaunchTask": "build test",
+            "type": "cppdbg",
+            "request": "launch",
+            "program": "${workspaceFolder}/target/test_exe",
+            "cwd": "${workspaceFolder}",
+            "MIMode": "gdb",
+            "miDebuggerPath": "/usr/bin/gdb-multiarch",
+            "miDebuggerServerAddress": "localhost:1234",
+            "setupCommands": [
+                {
+                    "text": "-enable-pretty-printing",
+                    "ignoreFailures": true
+                },
+                {
+                    "text": "set output-radix 16"
+                }
+            ]
+        },
+    ]
+}

.vscode/prepare_test.sh

@@ -0,0 +1,2 @@
+#!/bin/bash
+cargo xtask test --arch=riscv64 --dump 2>/dev/null | jq -r '[inputs] | map(select(has("executable")) | .executable) | last' | xargs -I{} cp {} target/test_exe

.vscode/tasks.json

@@ -0,0 +1,11 @@
+{
+    "version": "2.0.0",
+    "tasks": [
+        {
+            "type": "shell",
+            "label": "build test",
+            "command": "./.vscode/prepare_test.sh",
+            "problemMatcher": []
+        }
+    ]
+}

xtask/src/test.rs

@@ -6,16 +6,32 @@ use xshell::cmd;
 pub struct Test {
     #[command(flatten)]
     pub artifact: Artifact,
+    #[arg(long, default_value_t = false)]
+    pub debug:    bool,
+    #[arg(long, default_value_t = false)]
+    pub dump:     bool,
 }
 
 impl Test {
     pub fn run(&self) -> anyhow::Result<()> {
         let sh = crate::shell()?;
 
+        let mut extra_args: Vec<&str> = Vec::new();
+        if self.debug && !self.dump {
+            extra_args.push("--");
+            extra_args.push("-s");
+            extra_args.push("-S");
+        }
+        if self.dump {
+            extra_args.push("--no-run");
+            extra_args.push("--message-format=json")
+        }
+
         cmd!(sh, "cargo test")
             .env("CARGO_ENCODED_RUSTFLAGS", self.artifact.rust_flags()?.join("\x1f"))
             .args(["--bin", "kernel"])
             .args(self.artifact.cargo_args(true)?)
+            .args(extra_args)
             .run()?;
 
         Ok(())