github.com/afumu/libc@v0.0.6/musl/src/thread/aarch64/__unmapself.s (about)

     1  .global __unmapself
     2  .type   __unmapself,%function
     3  __unmapself:
     4  	mov x8,#215 // SYS_munmap
     5  	svc 0
     6  	mov x8,#93 // SYS_exit
     7  	svc 0