From b98b792c502b5da6428076894682db36138e4854 Mon Sep 17 00:00:00 2001
From: Rui Ueyama <ruiu@cs.stanford.edu>
Date: Sat, 27 Feb 2021 01:08:38 +0900
Subject: [PATCH] wip

---
 input_sections.cc | 15 +++++++++++++--
 main.cc           |  4 ++--
 mold.h            |  4 ++++
 3 files changed, 19 insertions(+), 4 deletions(-)

diff --git a/input_sections.cc b/input_sections.cc
index 9ba6dac6..5205d411 100644
--- a/input_sections.cc
+++ b/input_sections.cc
@@ -434,8 +434,7 @@ void InputSection::scan_relocations() {
     }
     case R_X86_64_PC8:
     case R_X86_64_PC16:
-    case R_X86_64_PC32:
-    case R_X86_64_PC64: {
+    case R_X86_64_PC32: {
       std::function<void()> table[][4] = {
         // Absolute  Local  Imported data  Imported code
         {  none,     none,  copyrel,       plt },        // PDE
@@ -447,6 +446,18 @@ void InputSection::scan_relocations() {
       table[output_type][get_sym_type(sym)]();
       break;
     }
+    case R_X86_64_PC64: {
+      std::function<void()> table[][4] = {
+        // Absolute  Local  Imported data  Imported code
+        {  none,     none,  copyrel,       plt },        // PDE
+        {  baserel,  none,  copyrel,       plt },        // PIE
+        {  baserel,  none,  error,         error },      // DSO
+      };
+
+      rel_types[i] = R_PC;
+      table[output_type][get_sym_type(sym)]();
+      break;
+    }
     case R_X86_64_GOT32:
       sym.flags |= NEEDS_GOT;
       rel_types[i] = R_GOT;
diff --git a/main.cc b/main.cc
index 944c86d3..87724d5a 100644
--- a/main.cc
+++ b/main.cc
@@ -675,8 +675,8 @@ static void fix_synthetic_symbols(std::span<OutputChunk *> chunks) {
   // __start_ and __stop_ symbols
   for (OutputChunk *chunk : chunks) {
     if (is_c_identifier(chunk->name)) {
-      start(Symbol::intern("__start_" + std::string(chunk->name)), chunk);
-      stop(Symbol::intern("__stop_" + std::string(chunk->name)), chunk);
+      start(Symbol::intern_alloc("__start_" + std::string(chunk->name)), chunk);
+      stop(Symbol::intern_alloc("__stop_" + std::string(chunk->name)), chunk);
     }
   }
 }
diff --git a/mold.h b/mold.h
index 98835c6e..5f2eb96a 100644
--- a/mold.h
+++ b/mold.h
@@ -253,6 +253,10 @@ public:
     return map.insert(name, {name});
   }
 
+  static Symbol *intern_alloc(std::string name) {
+    return intern(*new std::string(name));
+  }
+
   inline u64 get_addr() const;
   inline u64 get_got_addr() const;
   inline u64 get_gotplt_addr() const;