can you link 64-bit code to a 32-bit executable with Zig? | Zig Programming Language | Page 1

snow chasm Jan 14, 2023, 9:55 AM

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I am writing a bootloader and this would be valuable to me since it would avoid to load an extra executable for the BIOS loader. Thanks a lot in advance!

civic adder Jan 14, 2023, 10:03 AM

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i think you can't mix-and-match the code

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but you should be able to just include a binary blob of one code into the other via embedFile or the linker script

snow chasm Jan 14, 2023, 10:05 AM

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I see, it's what I suspected, thanks 🙂

tawdry star Jan 15, 2023, 2:05 AM

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civic adder i think you can't mix-and-match the code

your intuition is for most intents and purposes correct

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one should definitely not attempt to do this due to how linkers are structured

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it's definitely possible but no

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there are a lot of questions, just about the size of global variables, calling conventions and a lot of other things

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just building two compilation units with different compilation flags can be disasterous if you link them together

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imo just build it into a flat binary (the zig build system can do this) and use the binary

#can you link 64-bit code to a 32-bit executable with Zig?