From: Jeff Law <law@redhat.com>
Date: Mon, 19 Feb 1996 17:38:32 +0000 (+0000)
Subject:         * symtab.h (looup_minimal_symbol_solib_trampoline): Declare.
X-Git-Tag: gdb-4_18~9257
X-Git-Url: http://review.tizen.org/git/?a=commitdiff_plain;h=ff7f8f2d1e8f216693d815116d168166603ba262;p=external%2Fbinutils.git

    * symtab.h (looup_minimal_symbol_solib_trampoline): Declare.
Minor build nit.

        * breakpoint.h (remove_solib_event_breakpoints): Declare.
        * breakpoint.c (remove_solib_event_breakpoints): New function.
        * somsolib.c (solib_create_inferior_hook): Remove all solib event
        breakpoints before inserting any new ones.  Use a solib event
        breakpoint for the breakpoint at "_start".
        Remove extraneous "\n" from calls to warning.
Don't leave bogus breakpoints in the breakpoint chain.  Simplify
solib_create_inferior_hook and allow for debugging of startup code
(more 7763 related changes).

        * breakpoint.c (breakpoint_1): Add missing "sigtramp" to bptypes
        name array.
Another minor nit.
---

diff --git a/gdb/somsolib.c b/gdb/somsolib.c
index ebec205..9e36d19 100644
--- a/gdb/somsolib.c
+++ b/gdb/somsolib.c
@@ -501,6 +501,10 @@ som_solib_create_inferior_hook()
   struct objfile *objfile;
   CORE_ADDR anaddr;
 
+  /* First, remove all the solib event breakpoints.  Their addresses
+     may have changed since the last time we ran the program.  */
+  remove_solib_event_breakpoints ();
+
   if (symfile_objfile == NULL)
     return; 
 
@@ -518,9 +522,9 @@ som_solib_create_inferior_hook()
   msymbol = lookup_minimal_symbol ("__d_pid", NULL, symfile_objfile);
   if (msymbol == NULL)
     {
-      warning ("Unable to find __d_pid symbol in object file.\n");
-      warning ("Suggest linking with /usr/lib/end.o.\n");
-      warning ("GDB will be unable to track shl_load/shl_unload calls\n");
+      warning ("Unable to find __d_pid symbol in object file.");
+      warning ("Suggest linking with /usr/lib/end.o.");
+      warning ("GDB will be unable to track shl_load/shl_unload calls");
       goto keep_going;
     }
 
@@ -529,9 +533,9 @@ som_solib_create_inferior_hook()
   status = target_write_memory (anaddr, buf, 4);
   if (status != 0)
     {
-      warning ("Unable to write __d_pid\n");
-      warning ("Suggest linking with /usr/lib/end.o.\n");
-      warning ("GDB will be unable to track shl_load/shl_unload calls\n");
+      warning ("Unable to write __d_pid");
+      warning ("Suggest linking with /usr/lib/end.o.");
+      warning ("GDB will be unable to track shl_load/shl_unload calls");
       goto keep_going;
     }
 
@@ -541,9 +545,9 @@ som_solib_create_inferior_hook()
   msymbol = lookup_minimal_symbol ("_DLD_HOOK", NULL, symfile_objfile);
   if (msymbol == NULL)
     {
-      warning ("Unable to find _DLD_HOOK symbol in object file.\n");
-      warning ("Suggest linking with /usr/lib/end.o.\n");
-      warning ("GDB will be unable to track shl_load/shl_unload calls\n");
+      warning ("Unable to find _DLD_HOOK symbol in object file.");
+      warning ("Suggest linking with /usr/lib/end.o.");
+      warning ("GDB will be unable to track shl_load/shl_unload calls");
       goto keep_going;
     }
   anaddr = SYMBOL_VALUE_ADDRESS (msymbol);
@@ -580,9 +584,9 @@ som_solib_create_inferior_hook()
   msymbol = lookup_minimal_symbol ("__dld_hook", NULL, symfile_objfile);
   if (msymbol == NULL)
     {
-      warning ("Unable to find __dld_hook symbol in object file.\n");
-      warning ("Suggest linking with /usr/lib/end.o.\n");
-      warning ("GDB will be unable to track shl_load/shl_unload calls\n");
+      warning ("Unable to find __dld_hook symbol in object file.");
+      warning ("Suggest linking with /usr/lib/end.o.");
+      warning ("GDB will be unable to track shl_load/shl_unload calls");
       goto keep_going;
     }
   anaddr = SYMBOL_VALUE_ADDRESS (msymbol);
@@ -593,9 +597,9 @@ som_solib_create_inferior_hook()
   msymbol = lookup_minimal_symbol ("__d_trap", NULL, symfile_objfile);
   if (msymbol == NULL)
     {
-      warning ("Unable to find __dld_d_trap symbol in object file.\n");
-      warning ("Suggest linking with /usr/lib/end.o.\n");
-      warning ("GDB will be unable to track shl_load/shl_unload calls\n");
+      warning ("Unable to find __dld_d_trap symbol in object file.");
+      warning ("Suggest linking with /usr/lib/end.o.");
+      warning ("GDB will be unable to track shl_load/shl_unload calls");
       goto keep_going;
     }
   create_solib_event_breakpoint (SYMBOL_VALUE_ADDRESS (msymbol));
@@ -653,11 +657,9 @@ keep_going:
     }
 
   anaddr = SYMBOL_VALUE_ADDRESS (msymbol);
-  if (target_insert_breakpoint (anaddr, shadow_contents))
-    {
-      error ("Unable to set breakpoint at _start.\n");
-      return;
-    }
+
+  /* Make the breakpoint at "_start" a shared library event breakpoint.  */
+  create_solib_event_breakpoint (anaddr);
 
   /* Wipe out all knowledge of old shared libraries since their
      mapping can change from one exec to another!  */
@@ -670,29 +672,6 @@ keep_going:
       free (so_list_head);
       so_list_head = temp->next;
     }
-
-  /* Start the process again and wait for it to hit our breakpoint.  */
-  clear_proceed_status ();
-  stop_soon_quietly = 1;
-  stop_signal = TARGET_SIGNAL_0;
-  do
-    {
-      target_resume (-1, 0, stop_signal);
-      wait_for_inferior ();
-    }
-  while (stop_signal != TARGET_SIGNAL_TRAP);
-  stop_soon_quietly = 0;
-
-  /* All the libraries should be mapped in now.  Remove our breakpoint and
-     read in the symbol tables from the shared libraries.  */
-  if (target_remove_breakpoint (anaddr, shadow_contents))
-    {
-      error ("Unable to remove breakpoint at _start.\n");
-      return;
-    }
-
-  if (auto_solib_add)
-    som_solib_add ((char *) 0, 0, (struct target_ops *) 0);
 }
 
 /* Return the GOT value for the shared library in which ADDR belongs.  If