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Index > Compiler Internals > forward referenced EQU

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alexfru



Joined: 23 Mar 2014
Posts: 75
alexfru
Code:
; fasm equ test
; file: fabs.asm
; assemble (with fasm 1.71.22): fasm fabs.asm fabs.o
format elf

bar equ 0xffff
mov eax, bar

mov eax, foo ; error: undefined symbol 'foo'.
foo equ 0x1234
    


This produces an error, but many assemblers support such EQUs.
Could this be supported in FASM as well?
Post 08 Jun 2015, 00:34
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revolution
When all else fails, read the source


Joined: 24 Aug 2004
Posts: 17278
Location: In your JS exploiting you and your system
revolution
Change EQU to equals (=) and then you can forward reference it.

EQU is processed at the preprocessor stage and that is not multi-pass so forward referencing EQU is not possible.
Post 08 Jun 2015, 00:59
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alexfru



Joined: 23 Mar 2014
Posts: 75
alexfru
Thanks, = does the trick!
Post 08 Jun 2015, 01:10
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