Add support for the GNU V3 C++ ABI.

(Includes changes by Dan Berlin.)

* gnu-v3-abi.c: New file.
* minsyms.c: #include "value.h" and "cp-abi.h".
(install_minimal_symbols): Check the minimal symbol table for
symbols that look mangled in the V3 style, and select the V3 ABI
if we find any.
* Makefile.in (SFILES): Add gnu-v3-abi.c.
(COMMON_OBS): Add gnu-v3-abi.o.
(gnu-v3-abi.o): Add new rule.
(minsyms.o): Depend on $(cp_abi_h) and $(value_h).

1 files changed, 18 insertions, 1 deletions

diff --git a/gdb/minsyms.c b/gdb/minsyms.c
index 7608297a8e8..0ed38d2a33a 100644
--- a/gdb/minsyms.c
+++ b/gdb/minsyms.c
@@ -47,6 +47,8 @@
 #include "symfile.h"
 #include "objfiles.h"
 #include "demangle.h"
+#include "value.h"
+#include "cp-abi.h"
 
 /* Accumulate the minimal symbols for each objfile in bunches of BUNCH_SIZE.
    At the end, copy them all into one newly allocated location on an objfile's
@@ -956,9 +958,24 @@ install_minimal_symbols (struct objfile *objfile)
       objfile->minimal_symbol_count = mcount;
       objfile->msymbols = msymbols;
 
+      /* Try to guess the appropriate C++ ABI by looking at the names 
+	 of the minimal symbols in the table.  */
+      {
+	int i;
+
+	for (i = 0; i < mcount; i++)
+	  {
+	    const char *name = SYMBOL_NAME (&objfile->msymbols[i]);
+	    if (name[0] == '_' && name[1] == 'Z')
+	      {
+		switch_to_cp_abi ("gnu-v3");
+		break;
+	      }
+	  }
+      }
+      
       /* Now walk through all the minimal symbols, selecting the newly added
          ones and attempting to cache their C++ demangled names. */
-
       for (; mcount-- > 0; msymbols++)
 	SYMBOL_INIT_DEMANGLED_NAME (msymbols, &objfile->symbol_obstack);