gdb: add target_ops::supports_displaced_step

[deliverable/binutils-gdb.git] / gdb / glibc-tdep.c

diff --git a/gdb/glibc-tdep.c b/gdb/glibc-tdep.c
index 1c9eae82b99f774658244c5ff32ca734220ac1f2..09a230dbd84a101ab10d5579793c68f3c37dbc09 100644 (file)
--- a/gdb/glibc-tdep.c
+++ b/gdb/glibc-tdep.c
@@ -1,6 +1,6 @@
 /* Target-dependent code for the GNU C Library (glibc).
 
-   Copyright (C) 2002, 2003, 2007 Free Software Foundation, Inc.
+   Copyright (C) 2002-2020 Free Software Foundation, Inc.
 
    This file is part of GDB.
 
@@ -27,35 +27,6 @@
 
 /* Calling functions in shared libraries.  */
 
-/* Find the minimal symbol named NAME, and return both the minsym
-   struct and its objfile.  This probably ought to be in minsym.c, but
-   everything there is trying to deal with things like C++ and
-   SOFUN_ADDRESS_MAYBE_TURQUOISE, ...  Since this is so simple, it may
-   be considered too special-purpose for general consumption.  */
-
-static struct minimal_symbol *
-find_minsym_and_objfile (char *name, struct objfile **objfile_p)
-{
-  struct objfile *objfile;
-
-  ALL_OBJFILES (objfile)
-    {
-      struct minimal_symbol *msym;
-
-      ALL_OBJFILE_MSYMBOLS (objfile, msym)
-       {
-         if (SYMBOL_LINKAGE_NAME (msym)
-             && strcmp (SYMBOL_LINKAGE_NAME (msym), name) == 0)
-           {
-             *objfile_p = objfile;
-             return msym;
-           }
-       }
-    }
-
-  return 0;
-}
-
 /* See the comments for SKIP_SOLIB_RESOLVER at the top of infrun.c.
    This function:
    1) decides whether a PLT has sent us into the linker to resolve
@@ -82,22 +53,21 @@ glibc_skip_solib_resolver (struct gdbarch *gdbarch, CORE_ADDR pc)
      of GNU/Linux will provide a portable, efficient interface for
      debugging programs that use shared libraries.  */
 
-  struct objfile *objfile;
-  struct minimal_symbol *resolver 
-    = find_minsym_and_objfile ("_dl_runtime_resolve", &objfile);
+  struct bound_minimal_symbol resolver 
+    = lookup_bound_minimal_symbol ("_dl_runtime_resolve");
 
-  if (resolver)
+  if (resolver.minsym)
     {
       /* The dynamic linker began using this name in early 2005.  */
-      struct minimal_symbol *fixup
-       = lookup_minimal_symbol ("_dl_fixup", NULL, objfile);
+      struct bound_minimal_symbol fixup
+       = lookup_minimal_symbol ("_dl_fixup", NULL, resolver.objfile);
       
       /* This is the name used in older versions.  */
-      if (! fixup)
-        fixup = lookup_minimal_symbol ("fixup", NULL, objfile);
+      if (! fixup.minsym)
+        fixup = lookup_minimal_symbol ("fixup", NULL, resolver.objfile);
 
-      if (fixup && SYMBOL_VALUE_ADDRESS (fixup) == pc)
-       return frame_pc_unwind (get_current_frame ());
+      if (fixup.minsym && BMSYMBOL_VALUE_ADDRESS (fixup) == pc)
+       return frame_unwind_caller_pc (get_current_frame ());
     }
 
   return 0;