[cfe-dev] Fast delegates in C++11/14/...

[Miodrag Milanovic via cfe-dev]

Hello Tim,


Thanks for this documents a lot

Will check.

Regards,
Miodrag

On Sun, Mar 13, 2016 at 6:05 PM, Tim Northover <t.p.northover at gmail.com>
wrote:

> Hi Miodrag,
>
> On 13 March 2016 at 07:01, Miodrag Milanovic via cfe-dev
> <cfe-dev at lists.llvm.org> wrote:
> > Is there any document describing member function pointers and memory
> > organisation for it per platform since there seems to be a different
> meaning
> > at least on Intel and ARM ?
>
> These are the two documents:
>
> AArch32:
> http://infocenter.arm.com/help/topic/com.arm.doc.ihi0041e/IHI0041E_cppabi.pdf
> AArch64:
> http://infocenter.arm.com/help/topic/com.arm.doc.ihi0059b/IHI0059B_cppabi64.pdf
>
> Both delegate to the Itanium C++ ABI with some twists. For member
> function pointers, I think the virtual/non-virtual bit is just shunted
> onto the "this" adjustment (because the low bit of the code pointer
> decides whether the function is ARM/Thumb in 32-bit mode so isn't
> freely modifiable).
>
> Cheers.
>
> Tim.
>
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