compiler options

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alexa

Joined: 21 Apr 2006
Posts: 8

alexa 04 Jul 2010, 22:03

I work with Windows2000 Pc:Pentium4 dual-threading,2*256Mb memory,4095Mb virtual memory.fasmw1.68
According windows documentation I can write programm with length
"length cod"+"length data"<=4Gb
Compiler in IDE or compiler thru Command Prompt send message "Out of memory"
Please write trial programm under windows that use data with length 3Gb and
compiler compile this programm and we can execute it.

04 Jul 2010, 22:03

revolution
When all else fails, read the source

Joined: 24 Aug 2004
Posts: 20308
Location: In your JS exploiting you and your system

revolution 05 Jul 2010, 00:12

In 32-bit Windows you can only use 2GB per process in normal boot mode. And 3GB per process when booting in 3GB mode and your app has the LARGE_ADDRESS_AWARE flag set.

In 64-bit Windows a 32-bit process can use 4GB.

05 Jul 2010, 00:12

LocoDelAssembly
Your code has a bug

Joined: 06 May 2005
Posts: 4624
Location: Argentina

LocoDelAssembly 05 Jul 2010, 00:55

Quote:

In 64-bit Windows a 32-bit process can use 4GB.

But the LARGE_ADDRESS_AWARE flag still needs to be set, right? I think that there was some discussion about this earlier but AFAIK, the PE formatter still has no way to set it.

05 Jul 2010, 00:55

revolution
When all else fails, read the source

Joined: 24 Aug 2004
Posts: 20308
Location: In your JS exploiting you and your system

revolution 05 Jul 2010, 02:23

LocoDelAssembly wrote:

Quote:

In 64-bit Windows a 32-bit process can use 4GB.

But the LARGE_ADDRESS_AWARE flag still needs to be set, right?

Yeah, I expect so.

LocoDelAssembly wrote:

I think that there was some discussion about this earlier but AFAIK, the PE formatter still has no way to set it.

Perhaps:

Code:

format PE GUI 4.0 LARGE

fasm can't do it now of course, but it would be quite simple to add.

However for the OPs problem of out of memory, I doubt that can be solved so simply. fasm needs a contiguous block of memory to work with and Windows in 3GB mode still uses 0x7fff0000 in the process address space so it is not possible to get a 3GB contiguous block.

05 Jul 2010, 02:23

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