From 3822af14071ec2ffe03427079c343549f0143d9b Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Alex=20R=C3=B8nne=20Petersen?= <alex@alexrp.com>
Date: Sat, 8 Aug 2026 03:03:19 +0200
Subject: [PATCH] std: fix stack alignment instruction in csky _start and clone
 assembly

andi zero-extends its operand so this usage doesn't assemble; use andni instead.
---
 lib/std/os/linux/csky.zig | 2 +-
 lib/std/start.zig         | 2 +-
 2 files changed, 2 insertions(+), 2 deletions(-)

diff --git a/lib/std/os/linux/csky.zig b/lib/std/os/linux/csky.zig
index 9a0e854979d79614c8b40235d39e5e03f873bb04..4d456b08f210dce3f61da784333f067f341b8445 100644
--- a/lib/std/os/linux/csky.zig
+++ b/lib/std/os/linux/csky.zig
@@ -120,7 +120,7 @@ pub fn clone() callconv(.naked) u32 {
         \\ mov t0, r4
         \\ mov t1, r7
         \\
-        \\ andi r1, r1, -8
+        \\ andni r1, r1, 7
         \\
         \\ subi r1, 8
         \\ stw r0, (r1, 0)
diff --git a/lib/std/start.zig b/lib/std/start.zig
index 9e8ea47877453d7e7b079b2cbddb430c1e8a67af..92e0df4ed4b938f64a01a2c9cd51494ae8271447 100644
--- a/lib/std/start.zig
+++ b/lib/std/start.zig
@@ -282,7 +282,7 @@ fn _start() callconv(.naked) noreturn {
             \\ movi r8, 0
             \\ movi lr, 0
             \\ mov a0, sp
-            \\ andi sp, sp, -8
+            \\ andni sp, sp, 7
             \\ lrw t1, %[posixCallMainAndExit]@GOTOFF
             \\ addu t1, gb
             \\ jmp t1
-- 
2.54.0