zig

commit dd75302563f5cc0c67907b5c8a724e69379893f0 (tree)
parent e3840817d7a8a3e9e69a7b0e6f3c7f2ce8c8d029
Author: Koakuma <koachan@protonmail.com>
Date:   Tue,  3 Aug 2021 22:24:11 +0700

Linux/SPARCv9: use C calling convention for restore_rt

This is needed to prevent infinite loop when calling rt_sigreturn.

Diffstat:
M
lib/std/os/linux/sparc64.zig
 | 
4
+++-

1 file changed, 3 insertions(+), 1 deletion(-)
diff --git a/lib/std/os/linux/sparc64.zig b/lib/std/os/linux/sparc64.zig
@@ -169,7 +169,9 @@ pub extern fn clone(func: fn (arg: usize) callconv(.C) u8, stack: usize, flags: 
 
 pub const restore = restore_rt;
 
-pub fn restore_rt() callconv(.Naked) void {
+// Need to use C ABI here instead of naked
+// to prevent an infinite loop when calling rt_sigreturn.
+pub fn restore_rt() callconv(.C) void {
     return asm volatile ("t 0x6d"
         :
         : [number] "{g1}" (@enumToInt(SYS.rt_sigreturn))