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Date: Mon, 13 Jun 2005 18:21:00 -0000
From: Michael Snyder <msnyder@redhat.com>
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To: Eli Zaretskii <eliz@gnu.org>
CC: Klee Dienes <klee@mit.edu>, gdb-patches@sources.redhat.com
Subject: Re: The gdb x86 function prologue parser
References: <85C775AE-3B05-431E-96D2-49EA9D1413E6@apple.com> <20050608132431.GA4970@nevyn.them.org> <20050608095805.A67988@molenda.com> <200506120748.j5C7m75C011986@elgar.sibelius.xs4all.nl> <ull5g6k2g.fsf@gnu.org> <3364FC4D-63FB-493B-9136-D118F74C13BB@mit.edu> <uaclv7lzh.fsf@gnu.org>
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Eli Zaretskii wrote:
>>Cc: Mark Kettenis <mark.kettenis@xs4all.nl>, jason-swarelist@molenda.com,
>>        gdb-patches@sources.redhat.com
>>From: Klee Dienes <klee@mit.edu>
>>Date: Sun, 12 Jun 2005 07:59:01 -0400
>>
>>(2) gets used by GDB when it wants to know where to set a breakpoint  
>>(the idea being that when you say "break foo", it wants to insert the  
>>breakpoint in foo() after the prologue has been fully executed).
>>
>>It also gets used where GDB wants to know if it is inside a function  
>>prologue for some reason (for example, so "next" knows if it has  
>>stepped into a new function, or simply jumped interprocedurally).
> 
> 
> Thanks.
> 
> (I'm collecting info for gdbint.texinfo, that's why I asked.)

Also so "step into" can step past the prologue and not stop
until it has reached user code.  Same basic purpose as 2),
but different context.