From 79028dba96ddf50459203ab2fbf31a50e29c89a4 Mon Sep 17 00:00:00 2001
From: Berkus Decker <berkus+github@metta.systems>
Date: Wed, 4 Nov 2020 22:22:53 +0200
Subject: [PATCH] Add nm helper target

---
 Justfile              | 3 +++
 README.md             | 6 ++++++
 nucleus/Makefile.toml | 7 +++++++
 3 files changed, 16 insertions(+)

diff --git a/Justfile b/Justfile
index 431a879..df1e2b2 100644
--- a/Justfile
+++ b/Justfile
@@ -30,3 +30,6 @@ openocd:
 
 gdb:
     cargo make gdb
+
+nm:
+    cargo make nm
diff --git a/README.md b/README.md
index 940be7a..0bf55aa 100644
--- a/README.md
+++ b/README.md
@@ -80,6 +80,12 @@ just gdb
 
 If you launch OpenOCD or QEMU before, then gdb shall connect to it and allow you to load the kernel binary directly into memory. Type `load` in gdb to do that.
 
+### To see kernel symbols and their values
+
+```
+just nm
+```
+
 ### To see kernel disassembly
 
 You need to have [Hopper](https://hopperapp.com) and hopperv4 cli helper installed.
diff --git a/nucleus/Makefile.toml b/nucleus/Makefile.toml
index 659c29b..95cfa7e 100644
--- a/nucleus/Makefile.toml
+++ b/nucleus/Makefile.toml
@@ -78,6 +78,13 @@ script = [
     "rust-gdb -x ${GDB_CONNECT_FILE} ${KERNEL_ELF}"
 ]
 
+[tasks.nm]
+dependencies = ["build", "kernel-binary"]
+script = [
+    "${NM} -- ${KERNEL_ELF} | sort"
+]
+#install_crate = "cargo-binutils"
+
 [tasks.sdcard]
 dependencies = ["build", "kernel-binary"]
 script_runner = "@duckscript"