commit 423c9e3e589a79be757842d421600590c68d5b43
author Eric Christopher <echristo@apple.com> Mon May 17 21:02:07 2010 +0000
committer Eric Christopher <echristo@apple.com> Mon May 17 21:02:07 2010 +0000
tree 6304bcbf4e1fe201f9c4977abe389a9d3953f583
parent 53c779bb3a5712b67cf6bae785cb83a90841d17e

Add some section and constant support for darwin TLS.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@103974 91177308-0d34-0410-b5e6-96231b3b80d8

lib/CodeGen/TargetLoweringObjectFileImpl.cpp

diff --git a/lib/CodeGen/TargetLoweringObjectFileImpl.cpp b/lib/CodeGen/TargetLoweringObjectFileImpl.cpp
index 00e1e83..5bb33c2 100644
--- a/lib/CodeGen/TargetLoweringObjectFileImpl.cpp
+++ b/lib/CodeGen/TargetLoweringObjectFileImpl.cpp
@@ -461,6 +461,20 @@
     = getContext().getMachOSection("__DATA", "__data", 0,
                                    SectionKind::getDataRel());
 
+  TLSDataSection // .tdata
+    = getContext().getMachOSection("__DATA", "__thread_data",
+                                   MCSectionMachO::S_THREAD_LOCAL_REGULAR,
+                                   SectionKind::getDataRel());
+  TLSBSSSection // .tbss
+    = getContext().getMachOSection("__DATA", "__thread_bss",
+                                   MCSectionMachO::S_THREAD_LOCAL_ZEROFILL,
+                                   SectionKind::getThreadBSS());
+                                   
+  // TODO: Verify datarel below.
+  TLSTLVSection // .tlv
+    = getContext().getMachOSection("__DATA", "__thread_vars",
+                                   MCSectionMachO::S_THREAD_LOCAL_VARIABLES,
+                                   SectionKind::getDataRel());
   CStringSection // .cstring
     = getContext().getMachOSection("__TEXT", "__cstring", 
                                    MCSectionMachO::S_CSTRING_LITERALS,
@@ -646,7 +660,7 @@
 
 const MCSection *TargetLoweringObjectFileMachO::
 SelectSectionForGlobal(const GlobalValue *GV, SectionKind Kind,
-                       Mangler *Mang, const TargetMachine &TM) const {
+                       Mangler *Mang, const TargetMachine &TM) const {                       
   assert(!Kind.isThreadLocal() && "Darwin doesn't support TLS");
 
   if (Kind.isText())

lib/MC/MCSectionMachO.cpp

diff --git a/lib/MC/MCSectionMachO.cpp b/lib/MC/MCSectionMachO.cpp
index 3a18cee..7a519e8 100644
--- a/lib/MC/MCSectionMachO.cpp
+++ b/lib/MC/MCSectionMachO.cpp
@@ -34,7 +34,14 @@
   { "interposing",              "S_INTERPOSING" },                // 0x0D
   { "16byte_literals",          "S_16BYTE_LITERALS" },            // 0x0E
   { 0, /*FIXME??*/              "S_DTRACE_DOF" },                 // 0x0F
-  { 0, /*FIXME??*/              "S_LAZY_DYLIB_SYMBOL_POINTERS" }  // 0x10
+  { 0, /*FIXME??*/              "S_LAZY_DYLIB_SYMBOL_POINTERS" }, // 0x10
+  { "thread_local_regular",     "S_THREAD_LOCAL_REGULAR" },       // 0x11
+  { "thread_bss",               "S_THREAD_LOCAL_ZEROFILL" },      // 0x12
+  { "thread_local_variables",   "S_THREAD_LOCAL_VARIABLES" },     // 0x13
+  { "thread_local_variable_pointers",
+    "S_THREAD_LOCAL_VARIABLE_POINTERS" },                         // 0x14
+  { "thread_local_init_function_pointers",
+    "S_THREAD_LOCAL_INIT_FUNCTION_POINTERS"},                     // 0x15
 };
 
 

lib/Target/X86/X86AsmBackend.cpp

diff --git a/lib/Target/X86/X86AsmBackend.cpp b/lib/Target/X86/X86AsmBackend.cpp
index 8ee836e..6abba5a 100644
--- a/lib/Target/X86/X86AsmBackend.cpp
+++ b/lib/Target/X86/X86AsmBackend.cpp
@@ -222,7 +222,8 @@
   bool isVirtualSection(const MCSection &Section) const {
     const MCSectionMachO &SMO = static_cast<const MCSectionMachO&>(Section);
     return (SMO.getType() == MCSectionMachO::S_ZEROFILL ||
-            SMO.getType() == MCSectionMachO::S_GB_ZEROFILL);
+            SMO.getType() == MCSectionMachO::S_GB_ZEROFILL ||
+            SMO.getType() == MCSectionMachO::S_THREAD_LOCAL_ZEROFILL);
   }
 };