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From: ligang@sunnorth.com.cn
To: gdb@sourceware.org
Cc: bjgnu@sunnorth.com.cn
Subject: fail to get ra and bp
Date: Thu, 12 Oct 2006 05:21:00 -0000	[thread overview]
Message-ID: <OFF6F48CBC.D5A8195E-ON48257205.001D53B8-48257205.001D91BF@sunnorth.com.cn> (raw)

Hi all,


I am porting GDB to a new target.

The prologue has two insns ---- push ra and push bp.
When back tracing and printing variables, gdb will look for return address 

of this frame and frame pointer on stack.
Unfortunately, If compiling with -O2, the two insns are probably deleted. 
So, GDB will not get ra and bp value.

It seems MIPS also fail to do this. 
Does it need to change ABI? Anyone has any thought?
 
Thanks.
Ligang


             reply	other threads:[~2006-10-12  5:21 UTC|newest]

Thread overview: 5+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2006-10-12  5:21 ligang [this message]
2006-10-12  5:39 ` Joel Brobecker
  -- strict thread matches above, loose matches on Subject: below --
2006-10-12  7:14 ligang
2006-10-12 12:54 ` Daniel Jacobowitz
2006-10-12  4:33 bjgnu

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