From f7c6effc44d6843ed2ed6d1a08a88c050486d752 Mon Sep 17 00:00:00 2001
From: Evan Cheng <evan.cheng@apple.com>
Date: Tue, 7 Aug 2007 01:37:15 +0000
Subject: Initial JIT support for ARM by Raul Fernandes Herbster.

llvm-svn: 40887
---
 llvm/lib/Target/ARM/ARMJITInfo.cpp | 20 +++++++++++++++++++-
 1 file changed, 19 insertions(+), 1 deletion(-)

(limited to 'llvm/lib/Target/ARM/ARMJITInfo.cpp')

diff --git a/llvm/lib/Target/ARM/ARMJITInfo.cpp b/llvm/lib/Target/ARM/ARMJITInfo.cpp
index 294a12bc786..9622a29272c 100644
--- a/llvm/lib/Target/ARM/ARMJITInfo.cpp
+++ b/llvm/lib/Target/ARM/ARMJITInfo.cpp
@@ -127,5 +127,23 @@ void *ARMJITInfo::emitFunctionStub(void *Fn, MachineCodeEmitter &MCE) {
 /// referenced global symbols.
 void ARMJITInfo::relocate(void *Function, MachineRelocation *MR,
                           unsigned NumRelocs, unsigned char* GOTBase) {
-
+  for (unsigned i = 0; i != NumRelocs; ++i, ++MR) {
+    void *RelocPos = (char*)Function + MR->getMachineCodeOffset();
+    intptr_t ResultPtr = (intptr_t)MR->getResultPointer();
+    switch ((ARM::RelocationType)MR->getRelocationType()) {
+    case ARM::reloc_arm_relative: {
+      // PC relative relocation
+      *((unsigned*)RelocPos) += (unsigned)ResultPtr;
+      break;
+    }
+    case ARM::reloc_arm_absolute:
+      break;
+    case ARM::reloc_arm_branch: {
+      // relocation to b and bl instructions
+      ResultPtr = (ResultPtr-(intptr_t)RelocPos) >> 2;
+      *((unsigned*)RelocPos) |= ResultPtr;
+      break;
+    }
+    }
+  }
 }
-- 
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