From bbf3b0de8bedf01b0c5f162b25e9ee4ad0416df3 Mon Sep 17 00:00:00 2001
From: Evan Cheng <evan.cheng@apple.com>
Date: Wed, 20 Jul 2011 19:50:42 +0000
Subject: Goodbye TargetAsmInfo. This eliminate last bit of CodeGen and Target
 in llvm-mc.

There is still a bit more refactoring left to do in Targets. But we are now very
close to fixing all the layering issues in MC.

llvm-svn: 135611
---
 llvm/lib/MC/MCObjectFileInfo.cpp | 53 +++++++++++++++++++++++++++++++++++++++-
 1 file changed, 52 insertions(+), 1 deletion(-)

(limited to 'llvm/lib/MC/MCObjectFileInfo.cpp')

diff --git a/llvm/lib/MC/MCObjectFileInfo.cpp b/llvm/lib/MC/MCObjectFileInfo.cpp
index 5540b55..0b0a3e0 100644
--- a/llvm/lib/MC/MCObjectFileInfo.cpp
+++ b/llvm/lib/MC/MCObjectFileInfo.cpp
@@ -21,6 +21,12 @@ void MCObjectFileInfo::InitMachOMCObjectFileInfo(Triple T) {
   IsFunctionEHFrameSymbolPrivate = false;
   SupportsWeakOmittedEHFrame = false;
 
+  PersonalityEncoding = dwarf::DW_EH_PE_indirect | dwarf::DW_EH_PE_pcrel
+    | dwarf::DW_EH_PE_sdata4;
+  LSDAEncoding = FDEEncoding = FDECFIEncoding = dwarf::DW_EH_PE_pcrel;
+  TTypeEncoding = dwarf::DW_EH_PE_indirect | dwarf::DW_EH_PE_pcrel |
+    dwarf::DW_EH_PE_sdata4;
+
   // .comm doesn't support alignment before Leopard.
   if (T.isMacOSX() && T.isMacOSXVersionLT(10, 5))
     CommDirectiveSupportsAlignment = false;
@@ -199,6 +205,45 @@ void MCObjectFileInfo::InitMachOMCObjectFileInfo(Triple T) {
 }
 
 void MCObjectFileInfo::InitELFMCObjectFileInfo(Triple T) {
+  if (T.getArch() == Triple::x86) {
+    PersonalityEncoding = (RelocM == Reloc::PIC_)
+      ? dwarf::DW_EH_PE_indirect | dwarf::DW_EH_PE_pcrel | dwarf::DW_EH_PE_sdata4
+      : dwarf::DW_EH_PE_absptr;
+    LSDAEncoding = (RelocM == Reloc::PIC_)
+      ? dwarf::DW_EH_PE_pcrel | dwarf::DW_EH_PE_sdata4
+      : dwarf::DW_EH_PE_absptr;
+    FDEEncoding = FDECFIEncoding = (RelocM == Reloc::PIC_)
+      ? dwarf::DW_EH_PE_pcrel | dwarf::DW_EH_PE_sdata4
+      : dwarf::DW_EH_PE_absptr;
+    TTypeEncoding = (RelocM == Reloc::PIC_)
+      ? dwarf::DW_EH_PE_indirect | dwarf::DW_EH_PE_pcrel | dwarf::DW_EH_PE_sdata4
+      : dwarf::DW_EH_PE_absptr;
+  } else if (T.getArch() == Triple::x86_64) {
+    FDECFIEncoding = dwarf::DW_EH_PE_pcrel | dwarf::DW_EH_PE_sdata4;
+
+    if (RelocM == Reloc::PIC_) {
+      PersonalityEncoding = dwarf::DW_EH_PE_indirect | dwarf::DW_EH_PE_pcrel |
+        ((CMModel == CodeModel::Small || CMModel == CodeModel::Medium)
+         ? dwarf::DW_EH_PE_sdata4 : dwarf::DW_EH_PE_sdata8);
+      LSDAEncoding = dwarf::DW_EH_PE_pcrel |
+        (CMModel == CodeModel::Small
+         ? dwarf::DW_EH_PE_sdata4 : dwarf::DW_EH_PE_sdata8);
+      FDEEncoding = dwarf::DW_EH_PE_pcrel | dwarf::DW_EH_PE_sdata4;
+      TTypeEncoding = dwarf::DW_EH_PE_indirect | dwarf::DW_EH_PE_pcrel |
+        ((CMModel == CodeModel::Small || CMModel == CodeModel::Medium)
+         ? dwarf::DW_EH_PE_sdata4 : dwarf::DW_EH_PE_sdata8);
+    } else {
+      PersonalityEncoding =
+        (CMModel == CodeModel::Small || CMModel == CodeModel::Medium)
+        ? dwarf::DW_EH_PE_udata4 : dwarf::DW_EH_PE_absptr;
+      LSDAEncoding = (CMModel == CodeModel::Small)
+        ? dwarf::DW_EH_PE_udata4 : dwarf::DW_EH_PE_absptr;
+      FDEEncoding = dwarf::DW_EH_PE_udata4;
+      TTypeEncoding = (CMModel == CodeModel::Small)
+        ? dwarf::DW_EH_PE_udata4 : dwarf::DW_EH_PE_absptr;
+    }
+  }
+
   // ELF
   BSSSection =
     Ctx->getELFSection(".bss", ELF::SHT_NOBITS,
@@ -446,15 +491,21 @@ void MCObjectFileInfo::InitCOFFMCObjectFileInfo(Triple T) {
 }
 
 void MCObjectFileInfo::InitMCObjectFileInfo(StringRef TT, Reloc::Model relocm,
+                                            CodeModel::Model cm,
                                             MCContext &ctx) {
   RelocM = relocm;
+  CMModel = cm;
   Ctx = &ctx;
 
   // Common.
   CommDirectiveSupportsAlignment = true;
   SupportsWeakOmittedEHFrame = true;
   IsFunctionEHFrameSymbolPrivate = true;
-  EHFrameSection = 0;
+
+  PersonalityEncoding = LSDAEncoding = FDEEncoding = FDECFIEncoding =
+    TTypeEncoding = dwarf::DW_EH_PE_absptr;
+
+  EHFrameSection = 0; // Created on demand.
 
   Triple T(TT);
   Triple::ArchType Arch = T.getArch();
-- 
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