use weak aliases rather than function pointers to simplify some code

[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..99c1b7c 100644 (file)
--- a/src/thread/x86_64/__unmapself.s
+++ b/src/thread/x86_64/__unmapself.s
@@ -1,24 +1,10 @@
 /* Copyright 2011 Nicholas J. Kain, licensed GNU LGPL 2.1 or later */
 .text
 .global __unmapself
-.type   __unmapself,%function
+.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 */
+       movl $11,%eax   /* SYS_munmap */
        syscall         /* munmap(arg2,arg3) */
        xor %rdi,%rdi   /* exit() args: always return success */
-       movl $60,%eax   /* __NR_exit */
+       movl $60,%eax   /* SYS_exit */
        syscall         /* exit(0) */
-.size __unmapself,.-__unmapself