[lld] 723b40a - [ELF][Hexagon] Fix host endianness assumption

[Jessica Clarke via llvm-commits]

Author: Jessica Clarke
Date: 2025-08-03T21:30:17+01:00
New Revision: 723b40a8d92f76fc913ef21061fc3d74e8c47441

URL: https://github.com/llvm/llvm-project/commit/723b40a8d92f76fc913ef21061fc3d74e8c47441
DIFF: https://github.com/llvm/llvm-project/commit/723b40a8d92f76fc913ef21061fc3d74e8c47441.diff

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

Fixes: b42f96bc057f ("[lld] Add thunks for hexagon (#111217)")

Added: 
    

Modified: 
    lld/ELF/Relocations.cpp

Removed: 
    


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diff  --git a/lld/ELF/Relocations.cpp b/lld/ELF/Relocations.cpp
index cc59070d61230..666863b700caa 100644
--- a/lld/ELF/Relocations.cpp
+++ b/lld/ELF/Relocations.cpp
@@ -2151,9 +2151,8 @@ 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;