gdb: add target_ops::supports_displaced_step

[deliverable/binutils-gdb.git] / gold / ehframe.cc

diff --git a/gold/ehframe.cc b/gold/ehframe.cc
index 3898e1aaeb2080d9fe4b7c4e27f623dedbe90df6..c9feb28793d50b43f4eb551ee4226d4eb3a39071 100644 (file)
--- a/gold/ehframe.cc
+++ b/gold/ehframe.cc
@@ -1,6 +1,6 @@
 // ehframe.cc -- handle exception frame sections for gold
 
-// Copyright (C) 2006-2018 Free Software Foundation, Inc.
+// Copyright (C) 2006-2020 Free Software Foundation, Inc.
 // Written by Ian Lance Taylor <iant@google.com>.
 
 // This file is part of gold.
@@ -325,21 +325,6 @@ Eh_frame_hdr::get_fde_addresses(Output_file* of,
 
 // Class Fde.
 
-bool
-Fde::operator==(const Fde& that) const
-{
-  if (this->object_ != that.object_
-      || this->contents_ != that.contents_)
-    return false;
-  if (this->object_ == NULL)
-    return (this->u_.from_linker.plt == that.u_.from_linker.plt
-           && this->u_.from_linker.post_map == that.u_.from_linker.post_map);
-  else
-    return (this->u_.from_object.shndx == that.u_.from_object.shndx
-           && (this->u_.from_object.input_offset
-               == that.u_.from_object.input_offset));
-}
-
 // Write the FDE to OVIEW starting at OFFSET.  CIE_OFFSET is the
 // offset of the CIE in OVIEW.  OUTPUT_OFFSET is the offset of the
 // Eh_frame section within the output section.  FDE_ENCODING is the
@@ -458,15 +443,6 @@ Cie::set_output_offset(section_offset_type output_offset,
   return output_offset + length;
 }
 
-// Remove FDE.  Only the last FDE using this CIE may be removed.
-
-void
-Cie::remove_fde(const Fde* fde)
-{
-  gold_assert(*fde == *this->fdes_.back());
-  this->fdes_.pop_back();
-}
-
 // Write the CIE to OVIEW starting at OFFSET.  OUTPUT_OFFSET is the
 // offset of the Eh_frame section within the output section.  Round up
 // the bytes to ADDRALIGN.  ADDRESS is the virtual address of OVIEW.
@@ -1167,26 +1143,31 @@ Eh_frame::add_ehframe_for_plt(Output_data* plt, const unsigned char* cie_data,
     this->final_data_size_ += align_address(fde_length + 8, this->addralign());
 }
 
-// Remove unwind information for a PLT.  Only the last FDE added may be removed.
+// Remove all post-map unwind information for a PLT.
 
 void
 Eh_frame::remove_ehframe_for_plt(Output_data* plt,
                                 const unsigned char* cie_data,
-                                size_t cie_length,
-                                const unsigned char* fde_data,
-                                size_t fde_length)
+                                size_t cie_length)
 {
+  if (!this->mappings_are_done_)
+    return;
+
   Cie cie(NULL, 0, 0, elfcpp::DW_EH_PE_pcrel | elfcpp::DW_EH_PE_sdata4, "",
          cie_data, cie_length);
   Cie_offsets::iterator find_cie = this->cie_offsets_.find(&cie);
   gold_assert (find_cie != this->cie_offsets_.end());
   Cie* pcie = *find_cie;
 
-  Fde* fde = new Fde(plt, fde_data, fde_length, this->mappings_are_done_);
-  pcie->remove_fde(fde);
-
-  if (this->mappings_are_done_)
-    this->final_data_size_ -= align_address(fde_length + 8, this->addralign());
+  while (pcie->fde_count() != 0)
+    {
+      const Fde* fde = pcie->last_fde();
+      if (!fde->post_map(plt))
+       break;
+      size_t length = fde->length();
+      this->final_data_size_ -= align_address(length + 8, this->addralign());
+      pcie->remove_fde();
+    }
 }
 
 // Return the number of FDEs.