gdb: add target_ops::supports_displaced_step

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

diff --git a/gold/dirsearch.cc b/gold/dirsearch.cc
index 84e1b32c00ae4fd12716cce2b7a7aaf6a6e2f744..e8c9b1203c8e80809d587ad99af85434c75379d7 100644 (file)
--- a/gold/dirsearch.cc
+++ b/gold/dirsearch.cc
@@ -1,6 +1,6 @@
 // dirsearch.cc -- directory searching for gold
 
-// Copyright 2006, 2007, 2008 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.
@@ -25,6 +25,7 @@
 #include <cerrno>
 #include <cstring>
 #include <sys/types.h>
+#include <sys/stat.h>
 #include <dirent.h>
 
 #include "debug.h"
@@ -66,8 +67,9 @@ Dir_cache::read_files()
   DIR* d = opendir(this->dirname_);
   if (d == NULL)
     {
-      // We ignore directories which do not exist.
-      if (errno != ENOENT)
+      // We ignore directories which do not exist or are actually file
+      // names.
+      if (errno != ENOENT && errno != ENOTDIR)
        gold::gold_error(_("%s: can not read directory: %s"),
                         this->dirname_, strerror(errno));
       return;
@@ -100,7 +102,7 @@ class Dir_caches
     : lock_(), caches_()
   { }
 
-  ~Dir_caches();
+  ~Dir_caches() ATTRIBUTE_UNUSED;
 
   // Add a cache for a directory.
   void add(const char*);
@@ -229,13 +231,11 @@ Dirsearch::initialize(Workqueue* workqueue,
   gold_assert(caches == NULL);
   caches = new Dir_caches;
   this->directories_ = directories;
+  this->token_.add_blockers(directories->size());
   for (General_options::Dir_list::const_iterator p = directories->begin();
        p != directories->end();
        ++p)
-    {
-      this->token_.add_blocker();
-      workqueue->queue(new Dir_cache_task(p->name().c_str(), this->token_));
-    }
+    workqueue->queue(new Dir_cache_task(p->name().c_str(), this->token_));
 }
 
 // Search for a file.  NOTE: we only log failed file-lookup attempts
@@ -243,8 +243,9 @@ Dirsearch::initialize(Workqueue* workqueue,
 // File_read::open.
 
 std::string
-Dirsearch::find(const std::string& n1, const std::string& n2,
-               bool* is_in_sysroot, int* pindex) const
+Dirsearch::find(const std::vector<std::string>& names,
+               bool* is_in_sysroot, int* pindex,
+               std::string *found_name) const
 {
   gold_assert(!this->token_.is_blocked());
   gold_assert(*pindex >= 0);
@@ -256,27 +257,20 @@ Dirsearch::find(const std::string& n1, const std::string& n2,
       const Search_directory* p = &this->directories_->at(i);
       Dir_cache* pdc = caches->lookup(p->name().c_str());
       gold_assert(pdc != NULL);
-      if (pdc->find(n1))
+      for (std::vector<std::string>::const_iterator n = names.begin();
+          n != names.end();
+          ++n)
        {
-         *is_in_sysroot = p->is_in_sysroot();
-         *pindex = i;
-         return p->name() + '/' + n1;
-       }
-      else
-        gold_debug(DEBUG_FILES, "Attempt to open %s/%s failed",
-                   p->name().c_str(), n1.c_str());
-
-      if (!n2.empty())
-        {
-          if (pdc->find(n2))
-            {
-              *is_in_sysroot = p->is_in_sysroot();
+         if (pdc->find(*n))
+           {
+             *is_in_sysroot = p->is_in_sysroot();
              *pindex = i;
-              return p->name() + '/' + n2;
-            }
-          else
-            gold_debug(DEBUG_FILES, "Attempt to open %s/%s failed",
-                       p->name().c_str(), n2.c_str());
+             *found_name = *n;
+             return p->name() + '/' + *n;
+           }
+         else
+           gold_debug(DEBUG_FILES, "Attempt to open %s/%s failed",
+                      p->name().c_str(), (*n).c_str());
        }
     }
 
@@ -284,4 +278,28 @@ Dirsearch::find(const std::string& n1, const std::string& n2,
   return std::string();
 }
 
+// Search for a file in a directory list.  This is a low-level function and
+// therefore can be used before options and parameters are set.
+
+std::string
+Dirsearch::find_file_in_dir_list(const std::string& name,
+                                 const General_options::Dir_list& directories,
+                                 const std::string& extra_search_dir)
+{
+  struct stat buf;
+  std::string extra_name = extra_search_dir + '/' + name;
+
+  if (stat(extra_name.c_str(), &buf) == 0)
+    return extra_name;
+  for (General_options::Dir_list::const_iterator dir = directories.begin();
+       dir != directories.end();
+       ++dir)
+    {
+      std::string full_name = dir->name() + '/' + name;
+      if (stat(full_name.c_str(), &buf) == 0)
+        return full_name;
+    }
+  return name;
+}
+
 } // End namespace gold.