[Bug win32/9474] GDB will not set pending breakpoints in DLL's loaded with LoadLibrary()

["pebolle at tiscali dot nl" <sourceware-bugzilla@sourceware.org>]

http://sourceware.org/bugzilla/show_bug.cgi?id=9474

--- Comment #4 from Paul Bolle <pebolle at tiscali dot nl> 2011-04-28 21:19:44 UTC ---
(In reply to comment #3)
> 1) I looked around a bit in gdb's source (for instance in bfd/peXXigen.c), but
> haven't found the place(s) were this mapping of symbols to addresses goes awry
> for PE32 DLLs. Any suggestions were to look?

Not even compile tested:

diff --git a/gdb/coff-pe-read.c b/gdb/coff-pe-read.c
index ca87b72..0483158 100644
--- a/gdb/coff-pe-read.c
+++ b/gdb/coff-pe-read.c
@@ -150,6 +150,14 @@ read_pe_truncate_name (char *dll_name)
     }
 }


+static unsigned int
+pe_as16 (void *ptr)
+{
+  unsigned char *b = ptr;
+
+  return b[0] + (b[1] << 8);
+}
+
 /* Low-level support functions, direct from the ld module pe-dll.c.  */
 static unsigned int
 pe_get16 (bfd *abfd, int where)
@@ -309,11 +317,11 @@ read_pe_exported_syms (struct objfile *objfile)
   bfd_bread (expdata, (bfd_size_type) export_size, dll);
   erva = expdata - export_rva;

+  ordbase = pe_as32 (expdata + 16); /* unused */
   nexp = pe_as32 (expdata + 24);
+  exp_funcbase = pe_as32 (expdata + 28);
   name_rvas = pe_as32 (expdata + 32);
   ordinals = pe_as32 (expdata + 36);
-  ordbase = pe_as32 (expdata + 16);
-  exp_funcbase = pe_as32 (expdata + 28);

   /* Use internal dll name instead of full pathname.  */
   dll_name = pe_as32 (expdata + 12) + erva;
@@ -339,8 +347,10 @@ read_pe_exported_syms (struct objfile *objfile)
       /* Pointer to the names vector.  */
       unsigned long name_rva = pe_as32 (erva + name_rvas + i * 4);

+      unsigned long ordinal = pe_as16 (erva + ordinals + i * 2);
+
       /* Pointer to the function address vector.  */
-      unsigned long func_rva = pe_as32 (erva + exp_funcbase + i * 4);
+      unsigned long func_rva = pe_as32 (erva + exp_funcbase + ordinal * 4);

       /* Find this symbol's section in our own array.  */
       int sectix = 0;

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