Support pieces for gdb to work on the powerpc port.

4 files changed, 252 insertions, 17 deletions

diff --git a/gnu/usr.bin/binutils/gdb/config/powerpc/nm-obsd.h b/gnu/usr.bin/binutils/gdb/config/powerpc/nm-obsd.h
index 656cc6c4533..12648bf65f7 100644
--- a/gnu/usr.bin/binutils/gdb/config/powerpc/nm-obsd.h
+++ b/gnu/usr.bin/binutils/gdb/config/powerpc/nm-obsd.h
@@ -1,6 +1,5 @@
-/* Definitions for running gdb on a host machine running any flavor of SVR4.
-   Copyright 1991, 1992 Free Software Foundation, Inc.
-   Written by Fred Fish at Cygnus Support (fnf@cygnus.com).
+/* Native-dependent definitions for OpenBSD.
+   Copyright 1994, 1996 Free Software Foundation, Inc.
 
 This file is part of GDB.
 
@@ -18,20 +17,145 @@ You should have received a copy of the GNU General Public License
 along with this program; if not, write to the Free Software
 Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.  */
 
-#include "solib.h"	/* Support for shared libraries. */
+/* "Support" the Net- and OpenBSD-specific "-k" option. */
+#define	ADDITIONAL_OPTIONS		{"k", no_argument, 0, 'k'},
+#define	ADDITIONAL_OPTION_CASES case 'k': \
+	fprintf_unfiltered (gdb_stderr, \
+"-k: obsolete option.  For kernel debugging, start gdb\n"	\
+"with just the kernel name as an argument (no core file)\n"	\
+"and then use the gdb command `target kcore COREFILE'.\n");	\
+	exit (1);
+/* End of "-k" stuff. */
 
-/* Use SVR4 style shared library support */
+#define ATTACH_DETACH
 
-#define SVR4_SHARED_LIBS
+/* Use this instead of KERNEL_U_ADDR (See gdb/infptrace.c) */
+#define KERNEL_U_ADDR 0
+#define FETCH_INFERIOR_REGISTERS
 
-/* SVR4 has /proc support, so use it instead of ptrace. */
-/* On OpenBSD we prefer ptrace */
+/* This enables functions needed by kcore-nbsd.c */
+#define FETCH_KCORE_REGISTERS
 
-#undef USE_PROC_FS
+#define PTRACE_ARG3_TYPE char*
 
-/* SVR4 machines can easily do attach and detach via /proc (procfs.c)
-   support */
+#if 0
+#include "solib.h"      /* Support for shared libraries. */
+#endif
 
-#define ATTACH_DETACH
+/* 
+ * fix this later
+ */
+#if 0
+#ifdef SVR4_SHARED_LIBS
+/* The Net- and OpenBSD link.h structure definitions have different names
+   than the SunOS version, but the structures are very similar,
+   so we can use solib.c by defining the SunOS names.  */
+#define link_object	sod
+#define lo_name		sod_name
+#define lo_library	sod_library
+#define lo_unused	sod_reserved
+#define lo_major	sod_major
+#define lo_minor	sod_minor
+#define lo_next		sod_next
+
+#define link_map	so_map
+#define l_addr		som_addr
+#define l_name		som_path
+#define l_next		som_next
+#define lm_lop		som_sod
+#define lm_lob		som_sodbase
+#define l_prev		som_sodbase
+#define lm_rwt		som_write
+#define lm_ld		som_dynamic
+#define lm_lpd		som_spd
+
+#define link_dynamic_2	section_dispatch_table
+#define ld_loaded	sdt_loaded
+#define ld_need		sdt_sods
+#define ld_rules	sdt_rules
+#define ld_got		sdt_got
+#define ld_plt		sdt_plt
+#define ld_rel		sdt_rel
+#define ld_hash		sdt_hash
+#define ld_stab		sdt_nzlist
+#define ld_stab_hash	sdt_filler2
+#define ld_buckets	sdt_buckets
+#define ld_symbols	sdt_strings
+#define ld_symb_size	sdt_str_sz
+#define ld_text		sdt_text_sz
+#define ld_plt_sz	sdt_plt_sz
+
+#define rtc_symb	rt_symbol
+#define rtc_sp		rt_sp
+#define rtc_next	rt_next
+
+#define r_debug		so_debug
+#define ldd_version	dd_version
+#define ldd_in_debugger	dd_in_debugger
+#define ldd_sym_loaded	dd_sym_loaded
+#define ldd_bp_addr	dd_bpt_addr
+#define ldd_bp_inst	dd_bpt_shadow
+#define ldd_cp		dd_cc
+
+#define link_dynamic	_dynamic
+#define ld_version	d_version
+#define ldd		d_debug
+#define ld_un		d_un
+#define ld_2		d_sdt
+
+#else 
+
+#define link_object	sod
+#define lo_name		sod_name
+#define lo_library	sod_library
+#define lo_unused	sod_reserved
+#define lo_major	sod_major
+#define lo_minor	sod_minor
+#define lo_next		sod_next
+
+#define link_map	so_map
+#define lm_addr		som_addr
+#define lm_name		som_path
+#define lm_next		som_next
+#define lm_lop		som_sod
+#define lm_lob		som_sodbase
+#define lm_rwt		som_write
+#define lm_ld		som_dynamic
+#define lm_lpd		som_spd
+
+#define link_dynamic_2	section_dispatch_table
+#define ld_loaded	sdt_loaded
+#define ld_need		sdt_sods
+#define ld_rules	sdt_rules
+#define ld_got		sdt_got
+#define ld_plt		sdt_plt
+#define ld_rel		sdt_rel
+#define ld_hash		sdt_hash
+#define ld_stab		sdt_nzlist
+#define ld_stab_hash	sdt_filler2
+#define ld_buckets	sdt_buckets
+#define ld_symbols	sdt_strings
+#define ld_symb_size	sdt_str_sz
+#define ld_text		sdt_text_sz
+#define ld_plt_sz	sdt_plt_sz
+
+#define rtc_symb	rt_symbol
+#define rtc_sp		rt_sp
+#define rtc_next	rt_next
+
+#define ld_debug	so_debug
+#define ldd_version	dd_version
+#define ldd_in_debugger	dd_in_debugger
+#define ldd_sym_loaded	dd_sym_loaded
+#define ldd_bp_addr	dd_bpt_addr
+#define ldd_bp_inst	dd_bpt_shadow
+#define ldd_cp		dd_cc
+
+#define link_dynamic	_dynamic
+#define ld_version	d_version
+#define ldd		d_debug
+#define ld_un		d_un
+#define ld_2		d_sdt
 
-#define KERNEL_U_ADDR ((u_int)(USER_ADDR))
+#endif /* SVR4_SHARED_LIBS */
+#endif
diff --git a/gnu/usr.bin/binutils/gdb/config/powerpc/obsd.mh b/gnu/usr.bin/binutils/gdb/config/powerpc/obsd.mh
index 6e3e5c84e20..29976b851ec 100644
--- a/gnu/usr.bin/binutils/gdb/config/powerpc/obsd.mh
+++ b/gnu/usr.bin/binutils/gdb/config/powerpc/obsd.mh
@@ -1,10 +1,15 @@
-# Host: PowerPC, running Linux
+# Host: PowerPC, running OpenBSD
 
-XM_FILE= xm-obsd.h
+XM_FILE= ../xm-obsd.h
 XDEPFILES= ser-tcp.o
 XM_CLIBS=
 
 NAT_FILE= nm-obsd.h
-NATDEPFILES= obsdsolib.o corelow.o core-aout.o core-regset.o # infptrace.o inftarg.o fork-child.o
+NATDEPFILES= ppcobsd-nat.o corelow.o infptrace.o fork-child.o core-aout.o inftarg.o #core-regset.o
 
-#GDBSERVER_DEPFILES= low-linux.o
+GDBSERVER_DEPFILES= 
+
+# SVR4 comes standard with terminfo, and in some implementations, the
+# old termcap descriptions are incomplete.  So ensure that we use the
+# new terminfo interface and latest terminal descriptions.
+TERMCAP=-lcurses
diff --git a/gnu/usr.bin/binutils/gdb/config/powerpc/xm-obsd.h b/gnu/usr.bin/binutils/gdb/config/powerpc/xm-obsd.h
index 41c8ba71dc5..697e7ba1748 100644
--- a/gnu/usr.bin/binutils/gdb/config/powerpc/xm-obsd.h
+++ b/gnu/usr.bin/binutils/gdb/config/powerpc/xm-obsd.h
@@ -19,3 +19,6 @@ along with this program; if not, write to the Free Software
 Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.  */
 
 #define HOST_BYTE_ORDER BIG_ENDIAN
+/*
+#define KERNEL_U_ADDR 0
+*/
diff --git a/gnu/usr.bin/binutils/gdb/ppcobsd-nat.c b/gnu/usr.bin/binutils/gdb/ppcobsd-nat.c
new file mode 100644
index 00000000000..978a3cd9d69
--- /dev/null
+++ b/gnu/usr.bin/binutils/gdb/ppcobsd-nat.c
@@ -0,0 +1,103 @@
+/* Functions specific to running gdb native on a Powerpc System.
+   Copyright (C) 1993, Free Software Foundation, Inc.
+
+This file is part of GDB.
+
+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 2 of the License, or
+(at your option) any later version.
+
+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 this program; if not, write to the Free Software
+Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.  */
+
+#include <sys/types.h>
+#include <sys/ptrace.h>
+#include <sys/param.h>
+#include <sys/signal.h>	/* for MAXSIG in sys/user.h */
+#include <sys/types.h>	/* for ushort in sys/dir.h */
+#include <sys/dir.h>	/* for struct direct in sys/user.h */
+#include <sys/user.h>
+#include <machine/reg.h>
+#include "defs.h"
+#include "inferior.h"
+#include "target.h"
+#include "gdbcore.h"
+
+#include <nlist.h>
+
+#if !defined (offsetof)
+#define offsetof(TYPE, MEMBER) ((unsigned long) &((TYPE *)0)->MEMBER)
+#endif
+
+void
+fetch_inferior_registers (regno)
+     int regno;
+{
+  struct reg inferior_registers;
+
+/* 
+ * this gets fp and gpr?
+ */
+
+  ptrace (PT_GETREGS, inferior_pid,
+	  (PTRACE_ARG3_TYPE) &inferior_registers, 0);
+  memcpy (&registers, &inferior_registers,
+	  sizeof(inferior_registers));
+
+
+  registers_fetched ();
+}
+
+void
+store_inferior_registers (regno)
+     int regno;
+{
+  struct reg inferior_registers;
+
+
+  memcpy (&inferior_registers, &registers,
+	  sizeof(inferior_registers));
+  ptrace (PT_SETREGS, inferior_pid,
+	  (PTRACE_ARG3_TYPE) &inferior_registers, 0);
+
+}
+/* Return the address in the core dump or inferior of register REGNO.
+   BLOCKEND is the address of the end of the user structure.  */
+
+CORE_ADDR
+register_addr (regno, blockend)
+     int	regno;
+     CORE_ADDR	blockend;
+{
+	int ppcreg[] = 
+	{ 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15,
+	16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31,
+	0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, /* fp 0-15 */
+	0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, /* fp 16-31 */
+	   36,    37,   33,    32,    35,    34 ,   0 };
+	/* "pc", "ps", "cnd", "lr", "cnt", "xer", "mq" */
+	/*
+	32 lr
+	33 cr
+	34 xer
+	35 ctr
+	36 srr0
+	37 srr1
+	*/
+  if (regno < NUM_REGS) {
+    return (blockend + REGISTER_BYTE(regno));
+  } else
+    {
+      fprintf_unfiltered (gdb_stderr, "\
+Internal error: invalid register number %d in REGISTER_U_ADDR\n",
+	       regno);
+      return blockend;
+    }
+}