[PowerPC] ELFv2 explicit CFI for CR fields

[oota-llvm.git] / lib / Target / PowerPC / PPCJITInfo.cpp

diff --git a/lib/Target/PowerPC/PPCJITInfo.cpp b/lib/Target/PowerPC/PPCJITInfo.cpp
index 18f4adf839e3ccad8f69f656310624c0a10d5617..e5f113a0c030128acb7929260ed6c235ee2507c2 100644 (file)
--- a/lib/Target/PowerPC/PPCJITInfo.cpp
+++ b/lib/Target/PowerPC/PPCJITInfo.cpp
@@ -11,10 +11,9 @@
 //
 //===----------------------------------------------------------------------===//
 
-#define DEBUG_TYPE "jit"
 #include "PPCJITInfo.h"
 #include "PPCRelocations.h"
-#include "PPCTargetMachine.h"
+#include "PPCSubtarget.h"
 #include "llvm/IR/Function.h"
 #include "llvm/Support/Debug.h"
 #include "llvm/Support/ErrorHandling.h"
@@ -22,8 +21,15 @@
 #include "llvm/Support/raw_ostream.h"
 using namespace llvm;
 
+#define DEBUG_TYPE "jit"
+
 static TargetJITInfo::JITCompilerFn JITCompilerFunction;
 
+PPCJITInfo::PPCJITInfo(PPCSubtarget &STI)
+    : Subtarget(STI), is64Bit(STI.isPPC64()) {
+  useGOT = 0;
+}
+
 #define BUILD_ADDIS(RD,RS,IMM16) \
   ((15 << 26) | ((RD) << 21) | ((RS) << 16) | ((IMM16) & 65535))
 #define BUILD_ORI(RD,RS,UIMM16) \
@@ -71,6 +77,8 @@ static void EmitBranchToAt(uint64_t At, uint64_t To, bool isCall, bool is64Bit){
 extern "C" void PPC32CompilationCallback();
 extern "C" void PPC64CompilationCallback();
 
+// The first clause of the preprocessor directive looks wrong, but it is
+// necessary when compiling this code on non-PowerPC hosts.
 #if (!defined(__ppc__) && !defined(__powerpc__)) || defined(__powerpc64__) || defined(__ppc64__)
 void PPC32CompilationCallback() {
   llvm_unreachable("This is not a 32bit PowerPC, you can't execute this!");
@@ -212,6 +220,10 @@ asm(
     ".text\n"
     ".align 2\n"
     ".globl PPC64CompilationCallback\n"
+#if _CALL_ELF == 2
+    ".type PPC64CompilationCallback,@function\n"
+"PPC64CompilationCallback:\n"
+#else
     ".section \".opd\",\"aw\",@progbits\n"
     ".align 3\n"
 "PPC64CompilationCallback:\n"
@@ -221,6 +233,7 @@ asm(
     ".align 4\n"
     ".type PPC64CompilationCallback,@function\n"
 ".L.PPC64CompilationCallback:\n"
+#endif
 #  else
 asm(
     ".text\n"
@@ -385,7 +398,7 @@ void *PPCJITInfo::emitFunctionStub(const Function* F, void *Fn,
     JCE.emitWordBE(0xf821ffb1);     // stdu r1,-80(r1)
     JCE.emitWordBE(0x7d6802a6);     // mflr r11
     JCE.emitWordBE(0xf9610060);     // std r11, 96(r1)
-  } else if (TM.getSubtargetImpl()->isDarwinABI()){
+  } else if (Subtarget.isDarwinABI()){
     JCE.emitWordBE(0x9421ffe0);     // stwu r1,-32(r1)
     JCE.emitWordBE(0x7d6802a6);     // mflr r11
     JCE.emitWordBE(0x91610028);     // stw r11, 40(r1)