diff options
author | pommicket <pommicket@gmail.com> | 2022-02-20 13:18:21 -0800 |
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committer | pommicket <pommicket@gmail.com> | 2022-02-20 13:18:21 -0800 |
commit | 9bc8a11afeed3569736b89754012e3ca22ee10f6 (patch) | |
tree | 5f0ec0d5c05f879b1ee86adfa654ed3ef2178d5f /05/musl-0.6.0/src/thread/x86_64/__unmapself.s | |
parent | 0f97a589b800bdb71dda05984192f0f66a52edaa (diff) |
conclusion
Diffstat (limited to '05/musl-0.6.0/src/thread/x86_64/__unmapself.s')
-rw-r--r-- | 05/musl-0.6.0/src/thread/x86_64/__unmapself.s | 24 |
1 files changed, 24 insertions, 0 deletions
diff --git a/05/musl-0.6.0/src/thread/x86_64/__unmapself.s b/05/musl-0.6.0/src/thread/x86_64/__unmapself.s new file mode 100644 index 0000000..59092ea --- /dev/null +++ b/05/musl-0.6.0/src/thread/x86_64/__unmapself.s @@ -0,0 +1,24 @@ +/* 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 |