commit a9d9ab9673ec73817f3059ea430f1930a5b14948
author Chris Lattner <sabre@nondot.org> Mon Nov 15 05:57:53 2010 +0000
committer Chris Lattner <sabre@nondot.org> Mon Nov 15 05:57:53 2010 +0000
tree 7f6d1d9e28dfc30a89d16120253b5dbbaf63c752
parent 3170a3bc04deadfc0a4de5ff3cba7680be548f29

split call operands out to their own encoding class, simplifying
code in the JIT.  Use this to form the first fixup for the PPC backend,
giving us stuff like this:

	bl L_foo$stub ; encoding: [0b010010AA,A,A,0bAAAAAA01]
                                        ;   fixup A - offset: 0, value: L_foo$stub, kind: fixup_ppc_br24


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@119123 91177308-0d34-0410-b5e6-96231b3b80d8

lib/Target/PowerPC/PPCMCCodeEmitter.cpp

diff --git a/lib/Target/PowerPC/PPCMCCodeEmitter.cpp b/lib/Target/PowerPC/PPCMCCodeEmitter.cpp
index bbadcb0..67ab665 100644
--- a/lib/Target/PowerPC/PPCMCCodeEmitter.cpp
+++ b/lib/Target/PowerPC/PPCMCCodeEmitter.cpp
@@ -14,6 +14,7 @@
 #define DEBUG_TYPE "mccodeemitter"
 #include "PPC.h"
 #include "PPCRegisterInfo.h"
+#include "PPCFixupKinds.h"
 #include "llvm/MC/MCCodeEmitter.h"
 #include "llvm/MC/MCInst.h"
 #include "llvm/ADT/Statistic.h"
@@ -37,12 +38,12 @@
   
   ~PPCMCCodeEmitter() {}
   
-  unsigned getNumFixupKinds() const { return 0 /*PPC::NumTargetFixupKinds*/; }
+  unsigned getNumFixupKinds() const { return PPC::NumTargetFixupKinds; }
   
   const MCFixupKindInfo &getFixupKindInfo(MCFixupKind Kind) const {
     const static MCFixupKindInfo Infos[] = {
       // name                     offset  bits  flags
-      { "fixup_arm_pcrel_12",     2,      12,   MCFixupKindInfo::FKF_IsPCRel }
+      { "fixup_ppc_br24",         6,      24,   MCFixupKindInfo::FKF_IsPCRel }
 #if 0
       { "fixup_arm_vfp_pcrel_12", 3,      8,    MCFixupKindInfo::FKF_IsPCRel },
       { "fixup_arm_branch",       1,      24,   MCFixupKindInfo::FKF_IsPCRel },
@@ -57,6 +58,9 @@
     return Infos[Kind - FirstTargetFixupKind];
   }
 
+  unsigned getCallTargetEncoding(const MCInst &MI, unsigned OpNo,
+                                 SmallVectorImpl<MCFixup> &Fixups) const;
+  
   unsigned get_crbitm_encoding(const MCInst &MI, unsigned OpNo,
                                SmallVectorImpl<MCFixup> &Fixups) const;
 
@@ -92,6 +96,18 @@
 }
 
 unsigned PPCMCCodeEmitter::
+getCallTargetEncoding(const MCInst &MI, unsigned OpNo,
+                      SmallVectorImpl<MCFixup> &Fixups) const {
+  const MCOperand &MO = MI.getOperand(OpNo);
+  if (MO.isReg() || MO.isImm()) return getMachineOpValue(MI, MO, Fixups);
+  
+  // Add a fixup for the branch target.
+  Fixups.push_back(MCFixup::Create(0, MO.getExpr(),
+                                   (MCFixupKind)PPC::fixup_ppc_br24));
+  return 0;
+}
+
+unsigned PPCMCCodeEmitter::
 get_crbitm_encoding(const MCInst &MI, unsigned OpNo,
                     SmallVectorImpl<MCFixup> &Fixups) const {
   const MCOperand &MO = MI.getOperand(OpNo);