[Other] Read external data

[MapleFall]

I try to put the binary file of text or image on the outside, and then write a code to load them into RAM.
But when I compile it, it has the following errors:
`fopen' referenced in section `.text' of src/filename.o: defined in discarded section `.text' of ../../tools/agbcc/lib/libc.a(fopen.o)
`fread' referenced in section `.text' of src/filename.o: defined in discarded section `.text' of ../../tools/agbcc/lib/libc.a(fread.o)

…

How can I make it compile successfully？Please help me!

 

[Lunos]

I try to put the binary file of text or image on the outside, and then write a code to load them into RAM.
But when I compile it, it has the following errors:
`fopen' referenced in section `.text' of src/filename.o: defined in discarded section `.text' of ../../tools/agbcc/lib/libc.a(fopen.o)
`fread' referenced in section `.text' of src/filename.o: defined in discarded section `.text' of ../../tools/agbcc/lib/libc.a(fread.o)

…

How can I make it compile successfully？Please help me!

Make sure to add entries for your file inside the ld_script.txt file.

    .text :
    ALIGN(4)
    {
        (...)
        src/international_string_util.o(.text);
[COLOR="Green"]+       src/filename.o(.text);[/COLOR]
    } =0

 

[mgriffin]

fopen and fread don't exist on the GBA because there's no filesystem. If you look around in pokeemerald, you'll see that INCBIN macros are used to make the contents of a file available in the ROM.

 

[MapleFall]

fopen and fread don't exist on the GBA because there's no filesystem. If you look around in pokeemerald, you'll see that INCBIN macros are used to make the contents of a file available in the ROM.

OK,I see. Is there a way to read binary files? If we can, we will no longer be limited by 32MB

 

[ellabrella]

strictly speaking, we're not limited to 32MB. some real GBA cartridges use more space than that. here's an explanation for how the shrek 2 video cartridge, which uses 64MB of space, was dumped: https://mgba.io/2015/10/20/dumping-the-undumped/

however, i have no idea how you would implement this sort of thing into pokeemerald, or whether it would run on any emulator.