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From: Andy Walker <ja_walker@earthlink.net>
To: gcc@gcc.gnu.org
Subject: Synthetic register related: consequences of changing Frame layout.
Date: Sat, 04 Jan 2003 07:04:00 -0000	[thread overview]
Message-ID: <E18UiLf-0006bo-00@albatross.prod.itd.earthlink.net> (raw)

I am thinking about changing the frame layout for i386, but only when 
Synthetic registers are used.  

In particular, I want to align the hard-frame-pointer on a 32 byte boundary.

My instinct is that I will have to copy the old pc and old frame pointer to 
new locations to correspond to the modified hard-frame-pointer.   I will have 
to hunt down the place that points to the arguments above the 
hard-frame-pointer and adjust them so that the arguments are correctly found.

The saved registers will go below the hard-frame-pointer and the Synthetic 
registers, and I will have to modify the register save/restore processes to 
match the new layout.

What else am I likely to break in the process?

Andy

             reply	other threads:[~2003-01-04  7:04 UTC|newest]

Thread overview: 5+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2003-01-04  7:04 Andy Walker [this message]
2003-01-04 17:55 ` Denis Chertykov
2003-01-05  5:44   ` Andy Walker
2003-01-05 11:42 Robert Dewar
2003-01-06  5:01 ` Andy Walker

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