2023-08-16 22:26:55 +00:00
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- Don't create IBT .plt if there are no PLT entries. Cherry picked from
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upstream.
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2023-09-08 05:21:37 +00:00
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Index: lld/ELF/SyntheticSections.cpp
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--- lld/ELF/SyntheticSections.cpp.orig
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+++ lld/ELF/SyntheticSections.cpp
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2024-05-26 03:08:12 +00:00
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@@ -2567,6 +2567,10 @@ PltSection::PltSection()
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if ((config->emachine == EM_386 || config->emachine == EM_X86_64) &&
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(config->andFeatures & GNU_PROPERTY_X86_FEATURE_1_IBT))
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name = ".plt.sec";
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+#ifdef __OpenBSD__
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+ else if (config->emachine == EM_X86_64)
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+ name = ".plt.sec";
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+#endif
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// The PLT needs to be writable on SPARC as the dynamic linker will
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// modify the instructions in the PLT entries.
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@@ -2728,6 +2732,8 @@ size_t IBTPltSection::getSize() const {
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// 16 is the header size of .plt.
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2023-08-16 22:26:55 +00:00
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return 16 + in.plt->getNumEntries() * target->pltEntrySize;
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}
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+
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2024-05-26 03:08:12 +00:00
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+bool IBTPltSection::isNeeded() const { return in.plt->getNumEntries() > 0; }
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2023-08-16 22:26:55 +00:00
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// The string hash function for .gdb_index.
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static uint32_t computeGdbHash(StringRef s) {
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