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* symtab.h (looup_minimal_symbol_solib_trampoline): Declare.

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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.
This commit is contained in:
Jeff Law
1996-02-19 17:38:32 +00:00
parent a9c5cc539e
commit ff7f8f2d1e
1 changed files with 22 additions and 43 deletions
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65
gdb/somsolib.c
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@@ -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