refactor by using lambda

Author: sivan-shani

lld/ELF/InputFiles.cpp

@@ -717,35 +717,15 @@ template <class ELFT> void ObjFile<ELFT>::parse(bool ignoreComdats) {
           Warn(ctx) << &isec << ": " << std::move(e);
         } else {
           if (!hasGnuProperties) {
-            KnownAArch64BuildAttrSubsections subSections =
-                extractBuildAttributesSubsections(attributes);
-            if (ELFT::Endianness == llvm::endianness::big) {
+            KnownAArch64BuildAttrSubsections subSections = extractBuildAttributesSubsections(attributes);
+            auto serializeUnsigned = [&](unsigned value, size_t offset, bool isBE) {
               for (size_t i = 0; i < 8; ++i) {
-                this->aarch64PauthAbiCoreInfoStorage[i] = static_cast<uint8_t>(
-                    (static_cast<uint64_t>(subSections.pauth.tagPlatform) >>
-                     (8 * (7 - i))) &
-                    0xFF);
-                this->aarch64PauthAbiCoreInfoStorage[i + 8] =
-                    static_cast<uint8_t>(
-                        (static_cast<uint64_t>(subSections.pauth.tagSchema) >>
-                         (8 * (7 - i))) &
-                        0xFF);
-              }
-            } else {
-              for (size_t i = 0; i < 8; ++i) {
-                this->aarch64PauthAbiCoreInfoStorage[i] = static_cast<uint8_t>(
-                    (static_cast<uint64_t>(subSections.pauth.tagPlatform) >>
-                     (8 * i)) &
-                    0xFF);
-                this->aarch64PauthAbiCoreInfoStorage[i + 8] =
-                    static_cast<uint8_t>(
-                        (static_cast<uint64_t>(subSections.pauth.tagSchema) >>
-                         (8 * i)) &
-                        0xFF);
-              }
-            }
-            this->aarch64PauthAbiCoreInfo =
-                this->aarch64PauthAbiCoreInfoStorage;
+                this->aarch64PauthAbiCoreInfoStorage[i + offset] = static_cast<uint8_t>((static_cast<uint64_t>(value) >> (8 * (isBE ? (7 - i): i))) & 0xFF); };
+            };
+            serializeUnsigned(subSections.pauth.tagPlatform, 0, ELFT::Endianness == llvm::endianness::big);
+            serializeUnsigned(subSections.pauth.tagSchema, 8, ELFT::Endianness == llvm::endianness::big);
+            this->aarch64PauthAbiCoreInfo = this->aarch64PauthAbiCoreInfoStorage;
+
             this->andFeatures = 0;
             this->andFeatures |= (subSections.fAndB.tagBTI) << 0;
             this->andFeatures |= (subSections.fAndB.tagPAC) << 1;