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: Is GCC V3.4.6 supposed to be SystemV i386 ABI v4 compliant?

From: David Daney <ddaney at caviumnetworks dot com>
To: Curtis Taylor <cjt at us dot ibm dot com>
Cc: gcc-help at gcc dot gnu dot org
Date: Thu, 15 Jan 2009 17:24:10 -0800
Subject: Re: Is GCC V3.4.6 supposed to be SystemV i386 ABI v4 compliant?
References: <1232068508.7655.264.camel@t60.folsom.net>

Curtis Taylor wrote:

I have a case of g++ generating this instruction: add $0xe,%esp and creating a non 32bit aligned %esp. This is enabling a SIGSEGV in a signal handler that expects the stack to be word aligned.
How can I find out if GCC V3.4.6 is intended to keep the stack word
aligned at all times as required according to System V i386 ABI v4?

Does the ABI really require that the stack be aligned in places other than at function entry?

David Daney

Follow-Ups:
- Re: Is GCC V3.4.6 supposed to be SystemV i386 ABI v4 compliant?
  - From: Curtis Taylor

References:
- Is GCC V3.4.6 supposed to be SystemV i386 ABI v4 compliant?
  - From: Curtis Taylor

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