[PATCH] D141462: [lld-macho] Have all load commands aligned to the word size

Jez Ng via Phabricator via llvm-commits llvm-commits at lists.llvm.org
Tue Jan 10 23:47:38 PST 2023


int3 created this revision.
int3 added a reviewer: lld-macho.
Herald added projects: lld-macho, All.
int3 requested review of this revision.
Herald added a project: LLVM.
Herald added a subscriber: llvm-commits.

This is what ld64 does, and also what we already do for most of the
other load commands. I'm not aware of a good way to test this, but I
don't think it really matters.


Repository:
  rG LLVM Github Monorepo

https://reviews.llvm.org/D141462

Files:
  lld/MachO/Writer.cpp


Index: lld/MachO/Writer.cpp
===================================================================
--- lld/MachO/Writer.cpp
+++ lld/MachO/Writer.cpp
@@ -328,7 +328,8 @@
   }
 
   uint32_t getSize() const override {
-    return alignTo(sizeof(dylib_command) + path.size() + 1, 8);
+    return alignToPowerOf2(sizeof(dylib_command) + path.size() + 1,
+                           target->wordSize);
   }
 
   void writeTo(uint8_t *buf) const override {
@@ -362,7 +363,8 @@
 class LCLoadDylinker final : public LoadCommand {
 public:
   uint32_t getSize() const override {
-    return alignTo(sizeof(dylinker_command) + path.size() + 1, 8);
+    return alignToPowerOf2(sizeof(dylinker_command) + path.size() + 1,
+                           target->wordSize);
   }
 
   void writeTo(uint8_t *buf) const override {


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