race condition fix: block all signals before decrementing thread count

[musl] / src / thread / x86_64 / __unmapself.s

diff --git a/src/thread/x86_64/__unmapself.s b/src/thread/x86_64/__unmapself.s
index 59092ea..d36257d 100644 (file)
--- a/src/thread/x86_64/__unmapself.s
+++ b/src/thread/x86_64/__unmapself.s
@@ -3,19 +3,6 @@
 .global __unmapself
 .type   __unmapself,%function
 __unmapself:
-       call 1f         /* glibc ABI compat */
-       .long -1
-       .long -1
-1:      push %rsi       /* save arg2 for munmap */
-       push %rdx       /* save arg3 for munmap */
-       mov %rdi,%rsi   /* rt_sigprocmask() args: move arg1 to rsi */
-       xor %rdi,%rdi
-       xor %rdx,%rdx
-       movq $8,%r10
-       movl $14,%eax   /* __NR_rt_sigprocmask */
-       syscall         /* call rt_sigprocmask(0,arg1,0,8) */
-       pop %rsi        /* munmap() args: reload from stack */
-       pop %rdi
        movl $11,%eax   /* __NR_munmap */
        syscall         /* munmap(arg2,arg3) */
        xor %rdi,%rdi   /* exit() args: always return success */