zig

commit d3bf6c518f304741140a6a51236daefe5c87c0ef (tree)
parent 8fea9f68e8c7ea256d8137e3b311aafacef25e3a
Author: Alex Rønne Petersen <alex@alexrp.com>
Date:   Mon,  7 Apr 2025 13:08:40 +0200

start: Align the stack on m68k.

Diffstat:
M
lib/std/start.zig
 | 
6
+++++-

1 file changed, 5 insertions(+), 1 deletion(-)
diff --git a/lib/std/start.zig b/lib/std/start.zig
@@ -366,7 +366,11 @@ fn _start() callconv(.naked) noreturn {
             // Note that the - 8 is needed because pc in the jsr instruction points into the middle
             // of the jsr instruction. (The lea is 6 bytes, the jsr is 4 bytes.)
             \\ suba.l %%fp, %%fp
-            \\ move.l %%sp, -(%%sp)
+            \\ move.l %%sp, %%a0
+            \\ move.l %%a0, %%d0
+            \\ and.l #-4, %%d0
+            \\ move.l %%d0, %%sp
+            \\ move.l %%a0, -(%%sp)
             \\ lea %[posixCallMainAndExit] - . - 8, %%a0
             \\ jsr (%%pc, %%a0)
             ,