[mips][rtdyld] Move MIPS relocation resolution to a subclass and implement N32 relocations
N32 relocations are only correct for individual relocations at the moment.
Support for relocation composition will follow in a later patch.
Patch By: Daniel Sanders
Reviwers: vkalintiris, atanasyan
Differential Revision: https://reviews.llvm.org/D27467
llvm-svn: 289532
diff --git a/llvm/lib/ExecutionEngine/RuntimeDyld/Targets/RuntimeDyldELFMips.h b/llvm/lib/ExecutionEngine/RuntimeDyld/Targets/RuntimeDyldELFMips.h
new file mode 100644
index 0000000..ce54a27
--- /dev/null
+++ b/llvm/lib/ExecutionEngine/RuntimeDyld/Targets/RuntimeDyldELFMips.h
@@ -0,0 +1,68 @@
+//===-- RuntimeDyldELFMips.h ---- ELF/Mips specific code. -------*- C++ -*-===//
+//
+// The LLVM Compiler Infrastructure
+//
+// This file is distributed under the University of Illinois Open Source
+// License. See LICENSE.TXT for details.
+//
+//===----------------------------------------------------------------------===//
+
+#ifndef LLVM_LIB_EXECUTIONENGINE_RUNTIMEDYLD_TARGETS_RUNTIMEDYLDELFMIPS_H
+#define LLVM_LIB_EXECUTIONENGINE_RUNTIMEDYLD_TARGETS_RUNTIMEDYLDELFMIPS_H
+
+#include "../RuntimeDyldELF.h"
+#include <string>
+
+#define DEBUG_TYPE "dyld"
+
+namespace llvm {
+
+class RuntimeDyldELFMips : public RuntimeDyldELF {
+public:
+
+ typedef uint64_t TargetPtrT;
+
+ RuntimeDyldELFMips(RuntimeDyld::MemoryManager &MM,
+ JITSymbolResolver &Resolver)
+ : RuntimeDyldELF(MM, Resolver) {}
+
+ void resolveRelocation(const RelocationEntry &RE, uint64_t Value) override;
+
+protected:
+ void resolveMIPSO32Relocation(const SectionEntry &Section, uint64_t Offset,
+ uint32_t Value, uint32_t Type, int32_t Addend);
+ void resolveMIPSN32Relocation(const SectionEntry &Section, uint64_t Offset,
+ uint64_t Value, uint32_t Type, int64_t Addend,
+ uint64_t SymOffset, SID SectionID);
+ void resolveMIPSN64Relocation(const SectionEntry &Section, uint64_t Offset,
+ uint64_t Value, uint32_t Type, int64_t Addend,
+ uint64_t SymOffset, SID SectionID);
+
+private:
+ /// \brief A object file specific relocation resolver
+ /// \param RE The relocation to be resolved
+ /// \param Value Target symbol address to apply the relocation action
+ uint64_t evaluateRelocation(const RelocationEntry &RE, uint64_t Value,
+ uint64_t Addend);
+
+ /// \brief A object file specific relocation resolver
+ /// \param RE The relocation to be resolved
+ /// \param Value Target symbol address to apply the relocation action
+ void applyRelocation(const RelocationEntry &RE, uint64_t Value);
+
+ int64_t evaluateMIPS32Relocation(const SectionEntry &Section, uint64_t Offset,
+ uint64_t Value, uint32_t Type);
+ int64_t evaluateMIPS64Relocation(const SectionEntry &Section,
+ uint64_t Offset, uint64_t Value,
+ uint32_t Type, int64_t Addend,
+ uint64_t SymOffset, SID SectionID);
+
+ void applyMIPSRelocation(uint8_t *TargetPtr, int64_t CalculatedValue,
+ uint32_t Type);
+
+};
+}
+
+#undef DEBUG_TYPE
+
+#endif