Issues
Summarize Ghidra import issues here to promote discussion on relative priority and possible solutions.
Thread local storage class handling
Thread local storage provides one instance of the variable per extant thread. GCC supports this feature as:
__thread char threadLocalString[4096];
Binaries built with this feature will often include ELF relocation codes like R_RISCV_TLS_TPREL64. This relocation code is not recognized by
Ghidra, nor is it clear how TLS storage should be handled itself within Ghidra - perhaps as a memory section akin to BSS?
To reproduce, import libc.so.6 and look for lines like Elf Relocation Warning: Type = R_RISCV_TLS_TPREL64.
Alternatively, compile, link, and import riscv64/generated/userSpaceSamples/relocationTest.c.
Vector instruction support
Newer C compiler releases can replace simple loops and standard C library invocations with processor-specific vector instructions. These vector instructions can be handled poorly by Ghidra’s disassembler and worse by Ghidra’s decompiler. See autovectorization and vector_intrinsics for examples.