Minor bug fixes from BSD Net2 gdb:

* blockframe.c (get_prev_frame_info):  If FRAME_CHAIN_COMBINE
returns 0, there is no previous frame.
* breakpoint.c (commands_command):  If !from_tty, don't call
input_from_terminal_p().
* dbxread.c (record_misc_function):  Speed up slightly.
(compare_psymbols):  Ditto.
* infcmd.c (do_registers_info):  Take a second argument to
determine whether to print float registers.  "info registers"
does not do so anymore.  "info all-registers" does, now.
* mips-tdep.c, pyr-tdep.c (xxx_do_registers_info):  Take second
arg and ignore it.
* tm-mips.h, tm-pyr.h (DO_REGISTERS_INFO):  Pass second arg.
* inflow.c (initialize_inflow):  Set tflags_ours correctly.

1 files changed, 11 insertions, 8 deletions

diff --git a/gdb/mips-tdep.c b/gdb/mips-tdep.c
index abdd206..87a368c 100644
--- a/gdb/mips-tdep.c
+++ b/gdb/mips-tdep.c
@@ -8,19 +8,19 @@
 
 This file is part of GDB.
 
-GDB is free software; you can redistribute it and/or modify
+This program is free software; you can redistribute it and/or modify
 it under the terms of the GNU General Public License as published by
-the Free Software Foundation; either version 1, or (at your option)
-any later version.
+the Free Software Foundation; either version 2 of the License, or
+(at your option) any later version.
 
-GDB is distributed in the hope that it will be useful,
+This program is distributed in the hope that it will be useful,
 but WITHOUT ANY WARRANTY; without even the implied warranty of
 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 GNU General Public License for more details.
 
 You should have received a copy of the GNU General Public License
-along with GDB; see the file COPYING.  If not, write to
-the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA.  */
+along with this program; if not, write to the Free Software
+Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.  */
 
 /* FIXME: Can a MIPS porter/tester determine which of these include
    files we still need?   -- gnu@cygnus.com */
@@ -295,7 +295,8 @@ FRAME_ADDR mips_frame_chain(frame)
     else
       { /* This hack depends on the internals of __start. */
 	/* We also assume the breakpoints are *not* inserted */
-        if (read_memory_integer (saved_pc + 8, 4) & 0xFC00003F == 0xD)
+        if (saved_pc == 0
+	    || read_memory_integer (saved_pc + 8, 4) & 0xFC00003F == 0xD)
 	    return 0;  /* break */
       }
     proc_desc = find_proc_desc(saved_pc, frame);
@@ -579,8 +580,10 @@ static mips_print_register(regnum, all)
 	}
 }
 
-mips_do_registers_info(regnum)
+/* Replacement for generic do_registers_info.  fpregs is currently ignored. */
+mips_do_registers_info (regnum, fpregs)
      int regnum;
+     int fpregs;
 {
   if (regnum != -1) {
       mips_print_register (regnum, 0);