llvm dev - Aug 2018 - Which are CFI (Control Flow Integrity) related files?

Hi

I want to trace the code of clang/llvm CFI (Control Flow Integrity)
 mechanism

I found that there is ForwardControlFlowIntegrity.cpp in llvm 3.6

https://github.com/llvm-mirror/llvm/blob/release_36/lib/CodeGen/
ForwardControlFlowIntegrity.cpp

But I don't know which files implement  CFI (Control Flow Integrity)  in
later version

(1)

If I use this command

clang-6.0 -fsanitize=cfi-icall -fvisibility=hidden -flto ./test.c

Which files implement CFI ?

(2)

I found these two files

but I set break point  in gdb , and didn't find anything

(gdb) b llvm::CrossDSOCFI::buildCFICheck

https://github.com/llvm-mirror/llvm/blob/release_60/lib/Transforms/IPO/
LowerTypeTests.cpp
https://github.com/llvm-mirror/llvm/blob/release_60/lib/Transforms/IPO/
CrossDSOCFI.cpp

(3)

What's "MCCFIInstruction" ?

Does it relate to CFI (Control Flow Integrity) ?

http://llvm.org/doxygen/classllvm_1_1MCCFIInstruction.html

Thanks
-------------- next part --------------
An HTML attachment was scrubbed...
URL:
<http://lists.llvm.org/pipermail/llvm-dev/attachments/20180808/abde9d9a/attachment-0001.html>

On Tue, Aug 7, 2018 at 7:02 PM PenYiWang via llvm-dev <
llvm-dev at lists.llvm.org> wrote:
> Hi
>
> I want to trace the code of clang/llvm CFI (Control Flow Integrity)
>  mechanism
>
> I found that there is ForwardControlFlowIntegrity.cpp in llvm 3.6
>
>
>
https://github.com/llvm-mirror/llvm/blob/release_36/lib/CodeGen/ForwardControlFlowIntegrity.cpp
>
> But I don't know which files implement  CFI (Control Flow Integrity) 
in
> later version
>
> (1)
>
> If I use this command
>
> clang-6.0 -fsanitize=cfi-icall -fvisibility=hidden -flto ./test.c
>
> Which files implement CFI ?
>
In that case it would be LowerTypeTests.cpp as well as parts of
clang/lib/CodeGen (grep for CFIICall).

>
> (2)
>
> I found these two files
>
> but I set break point  in gdb , and didn't find anything
>
> (gdb) b llvm::CrossDSOCFI::buildCFICheck
>
>
>
https://github.com/llvm-mirror/llvm/blob/release_60/lib/Transforms/IPO/LowerTypeTests.cpp
>
>
https://github.com/llvm-mirror/llvm/blob/release_60/lib/Transforms/IPO/CrossDSOCFI.cpp
>
The CrossDSOCFI.cpp file is only involved in implementing cross-DSO CFI
(i.e. -fsanitize-cfi-cross-dso). If you don't request cross-DSO CFI only
LowerTypeTests.cpp is used.

> (3)
>
> What's "MCCFIInstruction" ?
>
> Does it relate to CFI (Control Flow Integrity) ?
>
> http://llvm.org/doxygen/classllvm_1_1MCCFIInstruction.html
>
No, that's a different CFI.

Peter
>
>
> Thanks
>
> _______________________________________________
> LLVM Developers mailing list
> llvm-dev at lists.llvm.org
> http://lists.llvm.org/cgi-bin/mailman/listinfo/llvm-dev
>

-- 
-- 
Peter
-------------- next part --------------
An HTML attachment was scrubbed...
URL:
<http://lists.llvm.org/pipermail/llvm-dev/attachments/20180807/3e1c6422/attachment.html>