From 1dd3b34b9117d4686a131047afc381ba15b8aac3 Mon Sep 17 00:00:00 2001
From: "Luke T. Shumaker" <lukeshu@lukeshu.com>
Date: Fri, 15 Nov 2024 20:33:41 -0700
Subject: libcr: Use SIG_SETMASK instead of SIG_(UN)BLOCK

---
 libcr/coroutine.c | 10 ++++++----
 1 file changed, 6 insertions(+), 4 deletions(-)

diff --git a/libcr/coroutine.c b/libcr/coroutine.c
index 205d0bb..7f61e94 100644
--- a/libcr/coroutine.c
+++ b/libcr/coroutine.c
@@ -161,15 +161,17 @@
 	static inline void cr_plat_wait_for_interrupt(void) {
 		pause();
 	}
+	/* For a signal to be *in* the mask means that the signal is
+	 * *blocked*.  */
 	void _cr_plat_disable_interrupts(void) {
 		sigset_t all;
 		sigfillset(&all);
-		sigprocmask(SIG_BLOCK, &all, NULL);
+		sigprocmask(SIG_SETMASK, &all, NULL);
 	}
 	void _cr_plat_enable_interrupts(void) {
-		sigset_t all;
-		sigfillset(&all);
-		sigprocmask(SIG_UNBLOCK, &all, NULL);
+		sigset_t zero;
+		sigemptyset(&zero);
+		sigprocmask(SIG_SETMASK, &zero, NULL);
 	}
 #elif __arm__
 	/* Assume bare-metal if !__unix__.  */
-- 
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