[llvm-dev] [LLD] TLS tbss section discrepancy to gnu-ld

[Noah Hütter via llvm-dev]

Hi all,

When porting a project from using GNU-gcc to LLVM with LLD I encounter
this discrepancy in the `__tbss_end` symbol.

With an explicit linker script, the __tbss_end symbols has the same
value as __tbss_start:

.tbss :
{
  __tbss_start = .;
  *(.tbss .tbss.* .gnu.linkonce.tb.*)
  *(.tcommon)
  __tbss_end = .;
}

LD correctly assigns the end to __tbss_end. We need to determine the
size of the tbss section to initialize it on our bare-metal target.

What is the proper way to determine the tbss section size in LLD?

Noah

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