redesign sigsetjmp so that signal mask is restored after longjmp

[oweals/musl.git] / src / signal / i386 / sigsetjmp.s

diff --git a/src/signal/i386/sigsetjmp.s b/src/signal/i386/sigsetjmp.s
index 91c8c0486892b0fd6a13fcb0e610d2b546c20bd8..1d24b6f78f384d7cb2fab5698f7b8fb02c7142d3 100644 (file)
--- a/src/signal/i386/sigsetjmp.s
+++ b/src/signal/i386/sigsetjmp.s
@@ -4,14 +4,22 @@
 .type __sigsetjmp,@function
 sigsetjmp:
 __sigsetjmp:
-       mov 4(%esp),%eax
        mov 8(%esp),%ecx
-       mov %ecx,24(%eax)
        jecxz 1f
-       add $28,%eax
-       push %eax
-       push $0
-       push $2
-       call sigprocmask
-       add $12,%esp
+
+       mov 4(%esp),%eax
+       popl 24(%eax)
+       mov %ebx,28+8(%eax)
+       mov %eax,%ebx
+
+       call setjmp
+
+       pushl 24(%ebx)
+       mov %ebx,4(%esp)
+       mov %eax,8(%esp)
+       mov 28+8(%ebx),%ebx
+
+.hidden __sigsetjmp_tail
+       jmp __sigsetjmp_tail
+
 1:     jmp setjmp