This is the mail archive of the gcc-help@gcc.gnu.org mailing list for the GCC project.

Index Nav:	[Date Index] [Subject Index] [Author Index] [Thread Index]
Message Nav:	[Date Prev] [Date Next]	[Thread Prev] [Thread Next]
Other format:	[Raw text]

Re: Frame pointer register name

From: Ian Lance Taylor <iant at google dot com>
To: Amittai Aviram <amittai dot aviram at yale dot edu>
Cc: gcc-help at gcc dot gnu dot org
Date: Mon, 17 Jan 2011 10:22:36 -0800
Subject: Re: Frame pointer register name
References: <0788C70F-5423-4132-B17B-0E5904B0F59C@yale.edu> <mcrr5cdh5l8.fsf@google.com> <E31C5648-E365-4A50-A9E9-77C574651321@yale.edu>

Amittai Aviram <amittai.aviram@yale.edu> writes:

> Oh, I see!  The build includes both 64-bit and 32-bit modes (so that the -m32 option will work), so I get the error when the build process gets to that point.  What preprocessor symbol can I use in my code to identify 64 versus 32 bit modes for conditional compilation?  Do GCC's Makefiles set __x86_64__ and __i386__?  Thanks!

Yes, #ifdef __x86_64__ will reliably detect 64-bit mode.

Ian

References:
- Frame pointer register name
  - From: Amittai Aviram
- Re: Frame pointer register name
  - From: Ian Lance Taylor
- Re: Frame pointer register name
  - From: Amittai Aviram

Index Nav:	[Date Index] [Subject Index] [Author Index] [Thread Index]
Message Nav:	[Date Prev] [Date Next]	[Thread Prev] [Thread Next]