>-----Original Message-----
>From: Mike Frysinger [mailto:[email protected]]
>Sent: Tuesday, June 22, 2010 12:16 PM
>To: Song, Barry
>Cc: [email protected];
>[email protected]
>Subject: Re: [Linux-kernel-commits] [8926]
>trunk/fs/binfmt_flat.c: [!no_src_qa!]
>
>On Mon, Jun 21, 2010 at 23:35, Song, Barry wrote:
>>From: Mike Frysinger [mailto:[email protected]]
>>>On Sun, Jun 20, 2010 at 22:27, Song, Barry wrote:
>>>> If the string is not in L1, how could helloworld can be
>>>> printed in application by argv[1].
>>>
>>>because argv[1] is not the same thing as argv[1][...]. there is no
>>>requirement that the strings themselves be placed on the stack, only
>>>the pointers to the strings.
>>
>> The fix was following the origin procedure. I have given a
>definite reply at the first time that the current pointer and
>content are both in L1.
>> If you want to place contents to RAM, there will be a new
>little task.
>
>see, i dont think that's true. i just booted up 2007R1.1 and it shows
>argv/envp on the stack, but not the string contents
>
>2007R1.1:
>&str : 0xffb00f28
> str : 0x5f3984 (Hello world!)
>&argv : 0xffb00f38
> argv : 0xffb00f84
>&argv[0]: 0xffb00f84
> argv[0]: 0x5f7f9c (/helloworld)
>&envp : 0x5f452c
> envp : 0xffb00f8c
>&envp[0]: 0xffb00f8c
> envp[0]: 0x5f7fa8 (HOME=/)
>
>current trunk:
>&str : 0xffb00f28
> str : 0x262b9a0 (Hello world!)
>&argv : 0xffb00f38
> argv : 0xffb00f84
>&argv[0]: 0xffb00f84
> argv[0]: 0xffb00fa0 (/helloworld)
>&envp : 0x262c548
> envp : 0xffb00f8c
>&envp[0]: 0xffb00f8c
> envp[0]: 0xffb00fac (TERM=linux)
>
>so i dont know why you think older versions placed their strings on
>the stack when older versions dont actually do that
Pls check the codes. It copied all to L1, but hasn't updated the sp+1 pointer.
Contents have been in L1, and also in RAM.
How could "helloworld " be shown by argv[0] in the scraptchpad program since my
patch only changed the pointer?
You should find my patch doesn't copy anything.
>-mike
>
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