/* 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
