[dmd-internals] x86: Callee-save registers, callWithStackShell().

[Walter Bright]

On 2/9/2013 12:14 AM, David Nadlinger wrote:
> Just to make sure I understood the calling convention used by DMD on x86:
>
> core.thread.callWithStackShell currently uses pushad to ensure that
> all registers are on the stack to be scannable by the GC. But in
> theory it would be enough to push EBX, ESI and EDI, as the other
> registers would be saved by the callWithStackShell caller anyway if
> they contained something of interest. Correct?
>

Yes.