[LLVMdev] Is lld the linker we need for our project ? (original) (raw)
Rodolphe Suescun rsu.medal at dolphin.fr
Tue Mar 11 09:52:00 PDT 2014
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Hi,
We are currently developing an LLVM-based compilation toolchain for a micro-controller, but would need some advice about whether we should use lld as linker.
So far we managed to write a basic target handler to read ELF files generated by llc and link them (and relocations seem to be applied correctly). But we have target-specific requirements:
- the program will be loaded into memory as-is, there is no runtime linker
- data and code must be located in different areas of memory so we should be able to specify a different base address for different sections
- parts of the code (such as interrupt vectors) must be located at specific addresses
- we will also need to be able to specify (in a map file) the address of any function or static variable
Is any of those requirements incompatible with lld ? And if not, any hints about how to implement them (or any lld documentation I might have missed) ?
Thanks a lot in advance, Rod
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