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/* Copyright 2011 Nicholas J. Kain, licensed GNU LGPL 2.1 or later */
.text
.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 */
movl $60,%eax /* __NR_exit */
syscall /* exit(0) */
.size __unmapself,.-__unmapself
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