[llvm] [llvm-readobj][ELF] Print ELF e_entry in lowercase mode (PR #156683)

[Ádám Kallai via llvm-commits]

https://github.com/kaadam created https://github.com/llvm/llvm-project/pull/156683

Currently llvm-readobj prints e_entry address in uppercase mode, however all other places such as 'symbols', 'relocs', the addresses are printed in lowercase mode. This PR aims to print the addresses in uniform manner.

Other use-case:
FileCheck comparison is case-sensitive by default, so if you would like to compare e_entry address with the same address in the symbol table it won't match by default.

>From 5d4ac87a186463f879881f4ad954694a9405fb59 Mon Sep 17 00:00:00 2001
From: Adam Kallai <kadam at inf.u-szeged.hu>
Date: Wed, 3 Sep 2025 16:16:26 +0200
Subject: [PATCH] [llvm-readobj][ELF] Print ELF e_entry in lowercase mode

Currently llvm-readobj prints e_entry address in uppercase mode,
however all other places such as symbols, relocs the addresses
are printed in lowercase mode. This PR aims to print the addresses
in uniform manner.

Other use-case:
FileCheck comparison is case-sensitive by default, so if you would
like to compare e_entry address with the same address in the symbol
table it won't match by default.
---
 llvm/tools/llvm-readobj/ELFDumper.cpp | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/llvm/tools/llvm-readobj/ELFDumper.cpp b/llvm/tools/llvm-readobj/ELFDumper.cpp
index a440bad130f4c..79a6ce1fd88b8 100644
--- a/llvm/tools/llvm-readobj/ELFDumper.cpp
+++ b/llvm/tools/llvm-readobj/ELFDumper.cpp
@@ -3640,7 +3640,7 @@ template <class ELFT> void GNUELFDumper<ELFT>::printFileHeaders() {
   printFields(OS, "Machine:", Str);
   Str = "0x" + utohexstr(e.e_version);
   printFields(OS, "Version:", Str);
-  Str = "0x" + utohexstr(e.e_entry);
+  Str = "0x" + utohexstr(e.e_entry, /*LowerCase=*/true);
   printFields(OS, "Entry point address:", Str);
   Str = to_string(e.e_phoff) + " (bytes into file)";
   printFields(OS, "Start of program headers:", Str);