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flat assembler > Compiler Internals > Error: Invalid address

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l4m2



Joined: 15 Jan 2015
Posts: 613
Code:
stos word[ds:di]
1.71.39
Post 27 Jul 2016, 17:31
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Tomasz Grysztar
Assembly Artist


Joined: 16 Jun 2003
Posts: 6873
Location: Kraków, Poland
Intel® 64 and IA-32 Architectures
Software Developer’s Manual wrote:
STOS/STOSB/STOSW/STOSD/STOSQ—Store String
(...)
The destination operand is a memory location, the address of which is read from either the ES:EDI or ES:DI register (depending on the address-size attribute of the instruction and the mode of operation). The ES segment cannot be overridden with a segment override prefix.
Post 27 Jul 2016, 18:03
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revolution
When all else fails, read the source


Joined: 24 Aug 2004
Posts: 15871
Location: 162173 Ryugu
l4m2: That code won't work on any x86 processor. It is a limitation of the CPU. Be thankful that fasm saved you from some hours of debugging.
Post 27 Jul 2016, 20:42
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l4m2



Joined: 15 Jan 2015
Posts: 613
Uh-uh. I found a lot of document only say that STOSX stores acc into [(E/R)DI]. Maybe we now use more in flat mode and no need to care about segments Smile
Thanks for your reply
Post 28 Jul 2016, 01:09
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