How many the max length in Fasm?

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Fastestcodes

Joined: 13 Jun 2022
Posts: 75

Fastestcodes 23 Aug 2022, 10:06

jumptable dd La00000000,La00000001,...,Lafffffffe,Laffffffff
Is it works?
How many labels can you use in code?

How many 'memory box' can you use in Fasm? I get error with 16384 membox. 8192 membox was good.
Bu0000
...
Bu8192 works.

Bu16384 doesn't work.

23 Aug 2022, 10:06

macomics

Joined: 26 Jan 2021
Posts: 926
Location: Russia

macomics 23 Aug 2022, 10:10

After starting, fasm shows how much memory it has allocated for work

Code:

flat assembler  version 1.73.30  (10240 kilobytes memory)

Everything should fit into this volume. That is, until you exceed the amount of memory, the names will work fine.

Next, simple math: 2 * 8192 * 16 + 2 * 8192 * 7 + 3 * 8192 + 4 * 8192 + 8 * 8192 * 32 = 57344 + 131072 + 32768 + 2097152 = 2.414 Mb

8192 * 16 - new line
8192 * 3 - size, byte + string[2] = 'dd' directive
8192 * 7 - size, byte + string[6] = 'BuXXXX' label enumeration
8192 * 16 - new line
8192 * 7 - size, byte + string[6] = 'BuXXXX:' label definition
4 * 8192 - binary data
8 * 8192 * 32 - binary search tree

This I counted approximately only the declaration of the LUT and all the labels listed in it.

And:
N * 8192 - cases

Last edited by macomics on 23 Aug 2022, 10:30; edited 2 times in total

23 Aug 2022, 10:10

revolution
When all else fails, read the source

Joined: 24 Aug 2004
Posts: 20299
Location: In your JS exploiting you and your system

revolution 23 Aug 2022, 10:20

Code:

~ fasm x
flat assembler  version 1.73.08  (4030244 kilobytes memory)

4GB

23 Aug 2022, 10:20

revolution
When all else fails, read the source

Joined: 24 Aug 2004
Posts: 20299
Location: In your JS exploiting you and your system

revolution 24 Aug 2022, 01:33

I can get 1M labels in 407MB memory

Code:

rept 1000000 x { z#x: }

Code:

~ fasm -m 407000 test.asm 
flat assembler  version 1.73.08  (407000 kilobytes memory)
1 passes, 3.3 seconds, 0 bytes.

24 Aug 2022, 01:33

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