[llvm-branch-commits] [lld] f5ad8dc - [ELF][Hexagon] Fix host endianness assumption

[Tobias Hieta via llvm-branch-commits]

Author: Jessica Clarke
Date: 2025-08-05T10:56:10+02:00
New Revision: f5ad8dc6876ab667d07fe6c3bd2ac2bad434f6fb

URL: https://github.com/llvm/llvm-project/commit/f5ad8dc6876ab667d07fe6c3bd2ac2bad434f6fb
DIFF: https://github.com/llvm/llvm-project/commit/f5ad8dc6876ab667d07fe6c3bd2ac2bad434f6fb.diff

LOG: [ELF][Hexagon] Fix host endianness assumption

Fixes: b42f96bc057f ("[lld] Add thunks for hexagon (#111217)")
(cherry picked from commit 723b40a8d92f76fc913ef21061fc3d74e8c47441)

Added: 
    

Modified: 
    lld/ELF/Relocations.cpp

Removed: 
    


################################################################################
diff  --git a/lld/ELF/Relocations.cpp b/lld/ELF/Relocations.cpp
index 9549cc6f56326..608cdd0d26660 100644
--- a/lld/ELF/Relocations.cpp
+++ b/lld/ELF/Relocations.cpp
@@ -2153,9 +2153,8 @@ static int getHexagonPacketOffset(const InputSection &isec,
   for (unsigned i = 0;; i++) {
     if (i == 3 || rel.offset < (i + 1) * 4)
       return i * 4;
-    uint32_t instWord = 0;
-    memcpy(&instWord, data.data() + (rel.offset - (i + 1) * 4),
-           sizeof(instWord));
+    uint32_t instWord =
+        read32(isec.getCtx(), data.data() + (rel.offset - (i + 1) * 4));
     if (((instWord & HEXAGON_MASK_END_PACKET) == HEXAGON_END_OF_PACKET) ||
         ((instWord & HEXAGON_MASK_END_PACKET) == HEXAGON_END_OF_DUPLEX))
       return i * 4;