From 361bf6eee5a8ca92d4a1b1693fd1bff0fe286799 Mon Sep 17 00:00:00 2001
From: John Gilmore <gnu@cygnus>
Date: Mon, 19 Aug 1991 20:54:03 +0000
Subject: [PATCH] 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.
---
 gdb/mips-tdep.c | 19 +++++++++++--------
 gdb/pyr-tdep.c  |  6 ++++--
 gdb/tm-mips.h   |  2 +-
 gdb/tm-pyr.h    |  2 +-
 4 files changed, 17 insertions(+), 12 deletions(-)

diff --git a/gdb/mips-tdep.c b/gdb/mips-tdep.c
index abdd2062c06..87a368c66fc 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);
diff --git a/gdb/pyr-tdep.c b/gdb/pyr-tdep.c
index 6e749f871b5..27192a3ea5b 100644
--- a/gdb/pyr-tdep.c
+++ b/gdb/pyr-tdep.c
@@ -46,10 +46,12 @@ pyr_print_registers(reg_buf, regnum)
 		   "usp", usp);
 }
 
-/* Print the register regnum, or all registers if regnum is -1. */
+/* Print the register regnum, or all registers if regnum is -1.
+   fpregs is currently ignored.  */
 
-pyr_do_registers_info (regnum)
+pyr_do_registers_info (regnum, fpregs)
     int regnum;
+    int fpregs;
 {
   /* On a pyr, we know a virtual register can always fit in an long.
      Here (and elsewhere) we take advantage of that.  Yuk.  */
diff --git a/gdb/tm-mips.h b/gdb/tm-mips.h
index 15edb3d1f7d..b57b04a1a53 100644
--- a/gdb/tm-mips.h
+++ b/gdb/tm-mips.h
@@ -134,7 +134,7 @@ Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.  */
 /* Define DO_REGISTERS_INFO() to do machine-specific formatting
    of register dumps. */
 
-#define DO_REGISTERS_INFO(_regnum) mips_do_registers_info(_regnum)
+#define DO_REGISTERS_INFO(_regnum, fp) mips_do_registers_info(_regnum, fp)
 
 #define REGISTER_U_ADDR(addr, blockend, regno) 		\
    if (blockend == 0) {					\
diff --git a/gdb/tm-pyr.h b/gdb/tm-pyr.h
index 963fdf2d72f..53298536573 100644
--- a/gdb/tm-pyr.h
+++ b/gdb/tm-pyr.h
@@ -181,7 +181,7 @@ Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.  */
 /* Define DO_REGISTERS_INFO() to do machine-specific formatting
    of register dumps. */
 
-#define DO_REGISTERS_INFO(_regnum) pyr_do_registers_info(_regnum)
+#define DO_REGISTERS_INFO(_regnum, fp) pyr_do_registers_info(_regnum, fp)
 
 /* need this so we can find the global registers: they never get saved. */
 extern unsigned int global_reg_offset;
-- 
2.30.2