Using asm templates on 386 wiht %-register names??

Article View: gnu.gcc.help

Article #53665

#53665

From: John_D._Sybalsky.MV
Date: Fri, 27 Sep 1991 04:49

21 lines
986 bytes

I've tried everything I can think of on this one, top no avail.

gcc 1.40, on a 386 (ISC SVR3 2.2.1), stock as.

I need to do something like

	asm("	movl %0, %esi" : : "g" (page));

But the danged % scanner (for %0) barfs on %esi, the legal register name.

I tried
{
   volatile register * short foo asm("si");
   . . .
  }

But the register load gets optimized away under -O.

Help?

--John

Technical Details

Message-ID: <91Sep26.214944pdt.11704@alpha.xerox.com>

Path: arc1-ca.pugleaf.net!gmdzi!unido!mcsun!uunet!cis.ohio-state.edu!envos.xerox.COM!John_D._Sybalsky.MV

Show Full Headers

Complete Article Headers

X-Google-Language: ENGLISH,ASCII-7-bit
X-Google-Thread: 11318c,21977d8721121476,start
X-Google-Attributes: gid11318c,public
X-Google-ArrivalTime: 1991-09-27 17:01:57 PST
Path: arc1-ca.pugleaf.net!gmdzi!unido!mcsun!uunet!cis.ohio-state.edu!envos.xerox.COM!John_D._Sybalsky.MV
From: John_D._Sybalsky.MV@envos.xerox.COM
Newsgroups: gnu.gcc.help
Subject: Using asm templates on 386 wiht %-register names??
Message-ID: <91Sep26.214944pdt.11704@alpha.xerox.com>
Date: 27 Sep 91 04:49:24 GMT
Sender: daemon@cis.ohio-state.edu
Distribution: gnu
Organization: GNUs Not Usenet
Lines: 21