zig

commit 1fa5ca24feb7b931fdc5f4ff826048a87922ad10 (tree)
parent 142209444a52c5c44b19a984f25376173027da7e
Author: Alex Rønne Petersen <alex@alexrp.com>
Date:   Mon, 22 Jul 2024 12:55:08 +0200

start: Add POSIX m68k startup code.

Diffstat:
M
lib/std/start.zig
 | 
8
++++++++

1 file changed, 8 insertions(+), 0 deletions(-)
diff --git a/lib/std/start.zig b/lib/std/start.zig
@@ -307,6 +307,14 @@ fn _start() callconv(.Naked) noreturn {
             \\ andi sp, sp, -16
             \\ tail %[posixCallMainAndExit]@plt
             ,
+            .m68k =>
+            // 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)
+            \\ lea %[posixCallMainAndExit] - . - 8, %%a0
+            \\ jsr (%%pc, %%a0)
+            ,
             .mips, .mipsel =>
             // The lr is already zeroed on entry, as specified by the ABI.
             \\ addiu $fp, $zero, 0