Allow passing a block to lookup_global_symbol_from_objfile

This has no behavior change in itself, but allows a future patch
to add a function to the Python API to look up symbols in the
static block.

gdb/ChangeLog:

2019-07-24  Christian Biesinger  <cbiesinger@google.com>

	* compile/compile-object-load.c (compile_object_load): Pass GLOBAL_SCOPE.
	* solib-spu.c (spu_lookup_lib_symbol): Pass GLOBAL_SCOPE.
	* solib-svr4.c (elf_lookup_lib_symbol): Pass GLOBAL_SCOPE.
	* symtab.c (lookup_global_symbol_from_objfile): Add a scope parameter.
	* symtab.h (lookup_global_symbol_from_objfile): Likewise.

6 files changed, 23 insertions, 5 deletions

diff --git a/gdb/ChangeLog b/gdb/ChangeLog
index 2ed8f65..e249888 100644
--- a/gdb/ChangeLog
+++ b/gdb/ChangeLog
@@ -1,3 +1,12 @@
+2019-07-22  Christian Biesinger  <cbiesinger@google.com>
+
+	* compile/compile-object-load.c (compile_object_load): Pass GLOBAL_SCOPE.
+	* solib-spu.c (spu_lookup_lib_symbol): Pass GLOBAL_SCOPE.
+	* solib-svr4.c (elf_lookup_lib_symbol): Pass GLOBAL_SCOPE.
+	* symtab.c (lookup_global_symbol_from_objfile): Add a scope parameter.
+	* symtab.h (lookup_global_symbol_from_objfile): Likewise.
+
+
 2019-07-24  Yoshinori Sato  <ysato@users.sourceforge.jp>
 
 	* h8300-tdep.c (h8300_register_name_common): New.
diff --git a/gdb/compile/compile-object-load.c b/gdb/compile/compile-object-load.c
index 4e70205..3a765a3 100644
--- a/gdb/compile/compile-object-load.c
+++ b/gdb/compile/compile-object-load.c
@@ -639,6 +639,7 @@ compile_object_load (const compile_file_names &file_names,
   objfile = objfile_holder.get ();
 
   func_sym = lookup_global_symbol_from_objfile (objfile,
+						GLOBAL_BLOCK,
 						GCC_FE_WRAPPER_FUNCTION,
 						VAR_DOMAIN).symbol;
   if (func_sym == NULL)
diff --git a/gdb/solib-spu.c b/gdb/solib-spu.c
index 448e1a6..5b97b9b 100644
--- a/gdb/solib-spu.c
+++ b/gdb/solib-spu.c
@@ -392,7 +392,8 @@ spu_lookup_lib_symbol (struct objfile *objfile,
 		       const domain_enum domain)
 {
   if (bfd_get_arch (objfile->obfd) == bfd_arch_spu)
-    return lookup_global_symbol_from_objfile (objfile, name, domain);
+    return lookup_global_symbol_from_objfile (objfile, GLOBAL_BLOCK, name,
+					      domain);
 
   if (svr4_so_ops.lookup_lib_global_symbol != NULL)
     return svr4_so_ops.lookup_lib_global_symbol (objfile, name, domain);
diff --git a/gdb/solib-svr4.c b/gdb/solib-svr4.c
index 8cd5b7d..c0c505a 100644
--- a/gdb/solib-svr4.c
+++ b/gdb/solib-svr4.c
@@ -3226,7 +3226,8 @@ elf_lookup_lib_symbol (struct objfile *objfile,
   if (abfd == NULL || scan_dyntag (DT_SYMBOLIC, abfd, NULL, NULL) != 1)
     return {};
 
-  return lookup_global_symbol_from_objfile (objfile, name, domain);
+  return lookup_global_symbol_from_objfile (objfile, GLOBAL_BLOCK, name,
+					    domain);
 }
 
 void
diff --git a/gdb/symtab.c b/gdb/symtab.c
index 5b8bfc1..87a0c8e 100644
--- a/gdb/symtab.c
+++ b/gdb/symtab.c
@@ -2224,15 +2224,18 @@ lookup_symbol_in_block (const char *name, symbol_name_match_type match_type,
 
 struct block_symbol
 lookup_global_symbol_from_objfile (struct objfile *main_objfile,
+				   enum block_enum block_index,
 				   const char *name,
 				   const domain_enum domain)
 {
+  gdb_assert (block_index == GLOBAL_BLOCK || block_index == STATIC_BLOCK);
+
   for (objfile *objfile : main_objfile->separate_debug_objfiles ())
     {
       struct block_symbol result
-        = lookup_symbol_in_objfile (objfile, GLOBAL_BLOCK, name, domain);
+        = lookup_symbol_in_objfile (objfile, block_index, name, domain);
 
-      if (result.symbol != NULL)
+      if (result.symbol != nullptr)
 	return result;
     }
 
diff --git a/gdb/symtab.h b/gdb/symtab.h
index b91454c..9880ecc 100644
--- a/gdb/symtab.h
+++ b/gdb/symtab.h
@@ -2045,13 +2045,16 @@ extern bool treg_matches_sym_type_name (const compiled_regex &treg,
 extern const char *main_name ();
 extern enum language main_language (void);
 
-/* Lookup symbol NAME from DOMAIN in MAIN_OBJFILE's global blocks.
+/* Lookup symbol NAME from DOMAIN in MAIN_OBJFILE's global or static blocks,
+   as specified by BLOCK_INDEX.
    This searches MAIN_OBJFILE as well as any associated separate debug info
    objfiles of MAIN_OBJFILE.
+   BLOCK_INDEX can be GLOBAL_BLOCK or STATIC_BLOCK.
    Upon success fixes up the symbol's section if necessary.  */
 
 extern struct block_symbol
   lookup_global_symbol_from_objfile (struct objfile *main_objfile,
+				     enum block_enum block_index,
 				     const char *name,
 				     const domain_enum domain);