From e90b72ec3082588b296956730bd2930cf8d5d671 Mon Sep 17 00:00:00 2001
From: Richard Qin <richard.qin.x@gmail.com>
Date: Fri, 10 Jul 2026 11:31:46 +0800
Subject: refactor: promote new architecture to repository root

Archive the deprecated implementation under lume-legacy, make the new kernel the default root-level build, and update repository entry points without changing kernel behavior.
---
 lume-legacy/src/kernel/proc/swtch.S | 37 +++++++++++++++++++++++++++++++++++++
 1 file changed, 37 insertions(+)
 create mode 100644 lume-legacy/src/kernel/proc/swtch.S

(limited to 'lume-legacy/src/kernel/proc/swtch.S')

diff --git a/lume-legacy/src/kernel/proc/swtch.S b/lume-legacy/src/kernel/proc/swtch.S
new file mode 100644
index 0000000..d55c03e
--- /dev/null
+++ b/lume-legacy/src/kernel/proc/swtch.S
@@ -0,0 +1,37 @@
+# SPDX-License-Identifier: GPL-2.0-or-later
+# Copyright (C) 2026 Richard Qin
+
+.global swtch
+
+swtch:
+    sd ra, 0(a0)
+    sd sp, 8(a0)
+    sd s0, 16(a0)
+    sd s1, 24(a0)
+    sd s2, 32(a0)
+    sd s3, 40(a0)
+    sd s4, 48(a0)
+    sd s5, 56(a0)
+    sd s6, 64(a0)
+    sd s7, 72(a0)
+    sd s8, 80(a0)
+    sd s9, 88(a0)
+    sd s10, 96(a0)
+    sd s11, 104(a0)
+
+    ld ra, 0(a1)
+    ld sp, 8(a1)
+    ld s0, 16(a1)
+    ld s1, 24(a1)
+    ld s2, 32(a1)
+    ld s3, 40(a1)
+    ld s4, 48(a1)
+    ld s5, 56(a1)
+    ld s6, 64(a1)
+    ld s7, 72(a1)
+    ld s8, 80(a1)
+    ld s9, 88(a1)
+    ld s10, 96(a1)
+    ld s11, 104(a1)
+
+    ret
-- 
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