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From: bjgnu@sunnorth.com.cn
To: gdb@sourceware.org
Subject: fail to get ra and bp
Date: Thu, 12 Oct 2006 04:33:00 -0000	[thread overview]
Message-ID: <OF41CAB979.62648124-ON48257205.00187B21-48257205.00192AB0@sunnorth.com.cn> (raw)

Hi all,

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.
Anyone has any thought?
 
Thanks.
ligang


             reply	other threads:[~2006-10-12  4:33 UTC|newest]

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

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