From 72be32c6332ff9dd38b989d5a0dd80f40996dd10 Mon Sep 17 00:00:00 2001
From: Andrew Kaylor <andrew.kaylor@intel.com>
Date: Tue, 15 Oct 2013 21:32:56 +0000
Subject: Separating ELF and MachO stub info functions for RuntimeDyld

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@192737 91177308-0d34-0410-b5e6-96231b3b80d8
---
 lib/ExecutionEngine/RuntimeDyld/RuntimeDyldELF.h | 24 ++++++++++++++++++++++++
 1 file changed, 24 insertions(+)

(limited to 'lib/ExecutionEngine/RuntimeDyld/RuntimeDyldELF.h')

diff --git a/lib/ExecutionEngine/RuntimeDyld/RuntimeDyldELF.h b/lib/ExecutionEngine/RuntimeDyld/RuntimeDyldELF.h
index ab6b8bdaf3..058078b0f3 100644
--- a/lib/ExecutionEngine/RuntimeDyld/RuntimeDyldELF.h
+++ b/lib/ExecutionEngine/RuntimeDyld/RuntimeDyldELF.h
@@ -82,6 +82,30 @@ class RuntimeDyldELF : public RuntimeDyldImpl {
                                 uint32_t Type,
                                 int64_t Addend);
 
+  unsigned getMaxStubSize() {
+    if (Arch == Triple::aarch64)
+      return 20; // movz; movk; movk; movk; br
+    if (Arch == Triple::arm || Arch == Triple::thumb)
+      return 8; // 32-bit instruction and 32-bit address
+    else if (Arch == Triple::mipsel || Arch == Triple::mips)
+      return 16;
+    else if (Arch == Triple::ppc64 || Arch == Triple::ppc64le)
+      return 44;
+    else if (Arch == Triple::x86_64)
+      return 6; // 2-byte jmp instruction + 32-bit relative address
+    else if (Arch == Triple::systemz)
+      return 16;
+    else
+      return 0;
+  }
+
+  unsigned getStubAlignment() {
+    if (Arch == Triple::systemz)
+      return 8;
+    else
+      return 1;
+  }
+
   uint64_t findPPC64TOC() const;
   void findOPDEntrySection(ObjectImage &Obj,
                            ObjSectionToIDMap &LocalSections,
-- 
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