tree 3896804bde1ffc2272e1fde082c2475480dfe260
parent 7c485bf52e0476f6d47bfcb08b5ac7e131d209bf
author Pavel Kosov <kpdev42@gmail.com> 1679491751 +0300
committer Pavel Kosov <kpdev42@gmail.com> 1679491751 +0300

Use segment's off and vaddr fields instead of IsSharedObject heuristic

This patch unifies the handling of ET_EXEC and ET_DYN ELF files by
clarifying the difference between "offset" of function's code in ELF
file, its "virtual address" that is recorded in the file (according to
ELF specification, it is the "symbol value" written to st_value field in
a symbol table entry in case of executable and shared object ELF files)
and the actual address of function in the address space of a process
after dynamic relocations took place.

Please note that file offset and virtual address are usually the same in
ET_DYN files (such as shared objects and position-independent
executables) but it is not required and this assumption is sometimes
violated in real-life scenarios.

Reviewed By: tnfchris

Differential Revision: https://reviews.llvm.org/D144852

~~

Huawei RRI, OS Lab