From: Brantley Coile <brantley@coraid.com>
To: 9fans@cse.psu.edu
Subject: Re: [9fans] bug in asm.ps
Date: Mon, 6 Mar 2006 10:36:10 -0500 [thread overview]
Message-ID: <d26ca0cb0eb5957e13fb6d94468d4e23@coraid.com> (raw)
In-Reply-To: <599f06db0603060731w45549c3bw64296d1f17379498@mail.gmail.com>
Oh, I understand now. You are correct. Asm.ps is wrong.
> Ok, but what I meant is that the automatics are upside down growing from n
> to 0 as the memory grows. Of course if you call any functions, the SP points
> to the last space left for their arguments. As far as I understand if you dont
> call any functions, 0(SP) is the last automatic. If you dont have any
> automatics, SP points to the return PC. If you call any functions there is space
> for their args (probably for the args of the functions with the
> biggest number of args) and SP is pointing to the last space which
> will be the first arg, because
> they gro from 0 to n as the memory grows.
>
> On 3/6/06, Brantley Coile <brantley@coraid.com> wrote:
>> SP doesn't point to the last automatic on the stack.
>> Not only is the automatics on the local stack, but also
>> temporaries, like the ones to hold parameters to a function.
>> If you call any functions 4(SP) is the second parameter to functions.
>>
>>
next prev parent reply other threads:[~2006-03-06 15:36 UTC|newest]
Thread overview: 12+ messages / expand[flat|nested] mbox.gz Atom feed top
2006-03-06 15:12 Gorka guardiola
2006-03-06 15:16 ` Brantley Coile
2006-03-06 15:31 ` Gorka guardiola
2006-03-06 15:36 ` Brantley Coile [this message]
2006-03-06 15:53 ` Russ Cox
2006-03-06 16:05 ` Brantley Coile
2006-03-06 16:17 ` Russ Cox
2006-03-06 16:22 ` Brantley Coile
2006-03-06 16:28 ` Russ Cox
2006-03-06 16:33 ` Gorka guardiola
2006-03-06 16:56 ` Charles Forsyth
2006-03-06 16:16 ` Gorka guardiola
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