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Re: ARM problems with the exception unwinder

To: rearnsha at arm dot com
Subject: Re: ARM problems with the exception unwinder
From: Andrew Haley <aph at redhat dot com>
Date: Tue, 23 Jan 2001 14:03:05 +0000 (GMT)
Cc: jason at redhat dot com, gcc-bugs at gcc dot gnu dot org
References: <200101221631.QAA07840@cam-mail2.cambridge.arm.com><200101231157.LAA02519@cam-mail2.cambridge.arm.com>

Richard Earnshaw writes:

 > I've just been looking at execute_cfa_insn() in frame_dwarf2.c and I've no 
 > idea how it is supposed to work when the cfa reg is not the stack pointer, 
 > since it seems to completely ignore any adjustments to the cfa register.  
 > How is this code supposed to work when the cfa register changes from frame 
 > to frame?

As I understand it, the CFA is *defined* to be the value of SP before
the call instruction.  Is that not so in your case?

Andrew.

Follow-Ups:
- Re: ARM problems with the exception unwinder
  - From: Richard Earnshaw

References:
- ARM problems with the exception unwinder
  - From: Richard Earnshaw
- Re: ARM problems with the exception unwinder
  - From: Richard Earnshaw

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