From: Ian Lance Taylor <ian@airs.com>
Date: Tue, 6 Oct 2009 21:36:00 +0000 (+0000)
Subject: 	* i386.cc (class Target_i386::Relocate): Add ldo_addrs_ field.
X-Git-Url: https://git.libre-soc.org/?a=commitdiff_plain;h=e8a9fcdace0208444ad0ca2a71174c1230b8987a;p=binutils-gdb.git

	* i386.cc (class Target_i386::Relocate): Add ldo_addrs_ field.
	(Target_i386::Relocate::relocate_tls): Call fix_up_ldo before
	changing local_dynamic_type_ from LOCAL_DYNAMIC_NONE.  When
	handling R_386_TLS_LDO_32, if local_dynamic_type_ is NONE, push
	the address on ldo_addrs_.
	(Target_i386::Relocate::fix_up_ldo): New function.
---

diff --git a/gold/ChangeLog b/gold/ChangeLog
index 48401799e5e..eab140b1610 100644
--- a/gold/ChangeLog
+++ b/gold/ChangeLog
@@ -1,3 +1,12 @@
+2009-10-06  Ian Lance Taylor  <iant@google.com>
+
+	* i386.cc (class Target_i386::Relocate): Add ldo_addrs_ field.
+	(Target_i386::Relocate::relocate_tls): Call fix_up_ldo before
+	changing local_dynamic_type_ from LOCAL_DYNAMIC_NONE.  When
+	handling R_386_TLS_LDO_32, if local_dynamic_type_ is NONE, push
+	the address on ldo_addrs_.
+	(Target_i386::Relocate::fix_up_ldo): New function.
+
 2009-10-06   Rafael Espindola  <espindola@google.com>
 
 	* plugin.cc (add_input_library): New.
diff --git a/gold/i386.cc b/gold/i386.cc
index 27e1cc91b5e..0c437618744 100644
--- a/gold/i386.cc
+++ b/gold/i386.cc
@@ -212,7 +212,7 @@ class Target_i386 : public Target_freebsd<32, false>
    public:
     Relocate()
       : skip_call_tls_get_addr_(false),
-	local_dynamic_type_(LOCAL_DYNAMIC_NONE)
+	local_dynamic_type_(LOCAL_DYNAMIC_NONE), ldo_addrs_()
     { }
 
     ~Relocate()
@@ -307,6 +307,10 @@ class Target_i386 : public Target_freebsd<32, false>
 		 unsigned char* view,
 		 section_size_type view_size);
 
+    // Fix up LDO_32 relocations we've already seen.
+    void
+    fix_up_ldo(const Relocate_info<32, false>*);
+
     // We need to keep track of which type of local dynamic relocation
     // we have seen, so that we can optimize R_386_TLS_LDO_32 correctly.
     enum Local_dynamic_type
@@ -322,6 +326,8 @@ class Target_i386 : public Target_freebsd<32, false>
     // The type of local dynamic relocation we have seen in the section
     // being relocated, if any.
     Local_dynamic_type local_dynamic_type_;
+    // A list of LDO_32 offsets, in case we find LDM after LDO_32.
+    std::vector<unsigned char*> ldo_addrs_;
   };
 
   // A class which returns the size required for a relocation type,
@@ -1922,6 +1928,8 @@ Target_i386::Relocate::relocate_tls(const Relocate_info<32, false>* relinfo,
 
     case elfcpp::R_386_TLS_GOTDESC:      // Global-dynamic (from ~oliva url)
     case elfcpp::R_386_TLS_DESC_CALL:
+      if (this->local_dynamic_type_ == LOCAL_DYNAMIC_NONE)
+	this->fix_up_ldo(relinfo);
       this->local_dynamic_type_ = LOCAL_DYNAMIC_GNU;
       if (optimized_type == tls::TLSOPT_TO_LE)
         {
@@ -1980,6 +1988,8 @@ Target_i386::Relocate::relocate_tls(const Relocate_info<32, false>* relinfo,
 				   "TLS relocations"));
 	  break;
 	}
+      else if (this->local_dynamic_type_ == LOCAL_DYNAMIC_NONE)
+	this->fix_up_ldo(relinfo);
       this->local_dynamic_type_ = LOCAL_DYNAMIC_GNU;
       if (optimized_type == tls::TLSOPT_TO_LE)
 	{
@@ -2013,6 +2023,11 @@ Target_i386::Relocate::relocate_tls(const Relocate_info<32, false>* relinfo,
           gold_assert(tls_segment != NULL);
           value -= tls_segment->memsz();
 	}
+      else
+	{
+	  // We may see the LDM later.
+	  this->ldo_addrs_.push_back(view);
+	}
       Relocate_functions<32, false>::rel32(view, value);
       break;
 
@@ -2419,6 +2434,24 @@ Target_i386::Relocate::tls_ie_to_le(const Relocate_info<32, false>* relinfo,
   Relocate_functions<32, false>::rel32(view, value);
 }
 
+// If we see an LDM reloc after we handled any LDO_32 relocs, fix up
+// the LDO_32 relocs.
+
+void
+Target_i386::Relocate::fix_up_ldo(const Relocate_info<32, false>* relinfo)
+{
+  if (this->ldo_addrs_.empty())
+    return;
+  Output_segment* tls_segment = relinfo->layout->tls_segment();
+  gold_assert(tls_segment != NULL);
+  elfcpp::Elf_types<32>::Elf_Addr value = - tls_segment->memsz();
+  for (std::vector<unsigned char*>::const_iterator p = this->ldo_addrs_.begin();
+       p != this->ldo_addrs_.end();
+       ++p)
+    Relocate_functions<32, false>::rel32(*p, value);
+  this->ldo_addrs_.clear();
+}
+
 // Relocate section data.
 
 void