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callroot
 Post subject: strange ASM
PostPosted: Mon May 30, 2016 4:25 pm 
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c0.s="456"

c1.s="789"

!mov [v_c1],[v_c0]


Debug c1
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Little John
 Post subject: Re: strange ASM
PostPosted: Mon May 30, 2016 5:35 pm 
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In the «Tricks 'n' Tips» subforum, callroot wrote:
c0.s="456"

c1.s="789"

!mov [v_c1],[v_c0]


Debug c1

infratec wrote:
callroot should be renamed to spamroot ;-)

I agree.

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Keya
 Post subject: Re: strange ASM
PostPosted: Mon May 30, 2016 5:43 pm 
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i didnt think you could "mov [mem], [mem]" in the one go (and this is a CPU thing not a PB thing) - you have to "mov reg, [mem]" then "mov [mem], reg". Please correct me if im wrong!
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DontTalkToMe
 Post subject: Re: strange ASM
PostPosted: Mon May 30, 2016 5:59 pm 
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Keya wrote:
i didnt think you could "mov [mem], [mem]" in the one go (and this is a CPU thing not a PB thing) - you have to "mov reg, [mem]" then "mov [mem], reg". Please correct me if im wrong!


You are not wrong.

Amazing tip btw :D
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callroot
 Post subject: Re: strange ASM
PostPosted: Tue May 31, 2016 4:56 am 
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Keya wrote:
i didnt think you could "mov [mem], [mem]" in the one go (and this is a CPU thing not a PB thing) - you have to "mov reg, [mem]" then "mov [mem], reg". Please correct me if im wrong!



Code:

c0.s = " 456 "

c1.s = " 789 "

! mov eax,[v_c0]

! mov [v_c1],eax


debug c1
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Demivec
 Post subject: Re: strange ASM
PostPosted: Tue May 31, 2016 5:35 am 
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callroot wrote:
Keya wrote:
i didnt think you could "mov [mem], [mem]" in the one go (and this is a CPU thing not a PB thing) - you have to "mov reg, [mem]" then "mov [mem], reg". Please correct me if im wrong!



Code:
c0.s = " 456 "

c1.s = " 789 "

! mov eax,[v_c0]

! mov [v_c1],eax


debug c1

Code works fine. What's so strange?

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callroot
 Post subject: Re: strange ASM
PostPosted: Tue May 31, 2016 5:49 am 
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Demivec wrote:
callroot wrote:
Keya wrote:
i didnt think you could "mov [mem], [mem]" in the one go (and this is a CPU thing not a PB thing) - you have to "mov reg, [mem]" then "mov [mem], reg". Please correct me if im wrong!



Code:
c0.s = " 456 "

c1.s = " 789 "

! mov eax,[v_c0]

! mov [v_c1],eax


debug c1

Code works fine. What's so strange?


! mov [v_c1],[v_c0]


Can't write this way.
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wilbert
 Post subject: Re: strange ASM
PostPosted: Tue May 31, 2016 6:10 am 
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callroot wrote:
! mov [v_c1],[v_c0]


Can't write this way.

That's right and you will never be able to write it this way because asm doesn't support this.

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DontTalkToMe
 Post subject: Re: strange ASM
PostPosted: Tue May 31, 2016 12:50 pm 
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There are tables with the possible operands sizes and types you can use with each instruction.

http://x86.renejeschke.de/html/file_mod ... d_176.html

Look there and you'll see you can't move from memory to memory.
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Rings
 Post subject: Re: strange ASM
PostPosted: Tue May 31, 2016 1:01 pm 
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topic moved...

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Keya
 Post subject: Re: strange ASM
PostPosted: Tue May 31, 2016 4:05 pm 
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here is some more info http://stackoverflow.com/questions/11953352/why-ia32-does-not-allow-memory-to-memory-mov
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Psychophanta
 Post subject: Re: strange ASM
PostPosted: Sun Jan 21, 2018 10:50 pm 
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Dear callroot:
R.t.f.m.
https://flatassembler.net/docs.php?article=manual

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