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ELF loader & linker to load external binary #11

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mmisono opened this issue Dec 9, 2022 · 2 comments
Open

ELF loader & linker to load external binary #11

mmisono opened this issue Dec 9, 2022 · 2 comments
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mmisono commented Dec 9, 2022

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@mmisono mmisono self-assigned this Dec 9, 2022
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mmisono commented Dec 11, 2022 •
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Basic implementation: https://github.com/mmisono/unikraft/tree/loader

Load relocatable x86_64 elf objects into main applications' memory.
Currently supports R_X86_64_PC32, R_X86_64_PLT32, and R_X86_64_GOTPCREL relocations.

TODO:

  • load symbol file
  • support .rodata.str1.1 section
  • support .text.startup section
  • support more relocation types (R_X86_64_GOTPC64, R_X86_64_PLTOFF64, R_X86_64_GOT64)
  • .data section relocation (for global pointer variable, e.g., char *str = "aaaa";)

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mmisono commented Dec 12, 2022

Example of putting string in to .rodata section: https://github.com/mmisono/unikraft/blob/dff4187be5a9400566a3948a59f25851ed88c7cd/lib/ushell/test/hello.c

@mmisono mmisono mentioned this issue Apr 28, 2023
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