CODEWITHSUNDEEP
arraysassemblyfasm
adad
adad

Reputation: 41

Initializing array in assembler

I just started learning ASM, I have C experience but I guess it doesn't matter. Anyway how can I initialize a 12 elements array of DT to 0s, and how not to initialize it?

I use FASM.

Upvotes: 4

Views: 2933

Answers (2)

user47322
user47322

Reputation:

Since arrays are just a contiguous chunk of memory with elements one after the other, you can do something like this in NASM (not sure if FASM supports the times directive, but you could try):

my_array:
    times 12 dt 0.0

That is expanded out when your source is assembled to:

my_array:
    dt 0.0
    dt 0.0
    dt 0.0
    dt 0.0
    dt 0.0
    dt 0.0
    dt 0.0
    dt 0.0
    dt 0.0
    dt 0.0
    dt 0.0
    dt 0.0

Upvotes: 1

Jens Björnhager
Jens Björnhager

Reputation: 5648

Just use the reserve data directive and reserve 12 tbytes:

array:          rt 12

Upvotes: 0

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