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[ppc64-linux]: Support gdbserver on PPC64 Linux


gdb/ChangeLog:
2003-05-29  Jim Blandy  <jimb@redhat.com>

	Support gdbserver on 64-bit PowerPC Linux.
	* configure.tgt (powerpc64-*-linux*): Build gdbserver, please.
	* regformats/reg-ppc64.dat: New file.

gdb/gdbserver/ChangeLog:
2003-05-29  Jim Blandy  <jimb@redhat.com>

	Add support for Linux on the 64-bit PowerPC.
	* linux-ppc64-low.c: New file.
	* configure.srv (powerpc64-*-linux*): New case.
	(powerpc*-*-linux*): Adjust case pattern not to match
	powerpc64-*-linux*.
	* Makefile.in (linux-ppc64-low.o, reg-ppc64.o, reg-ppc64.c): New
	rules.
	(clean): Delete reg-ppc64.c, too.

Index: gdb/configure.tgt
===================================================================
RCS file: /cvs/src/src/gdb/configure.tgt,v
retrieving revision 1.104.2.1
diff -c -r1.104.2.1 configure.tgt
*** gdb/configure.tgt	28 May 2003 16:51:21 -0000	1.104.2.1
--- gdb/configure.tgt	29 May 2003 06:26:43 -0000
***************
*** 194,200 ****
  powerpc-*-linux*)	gdb_target=linux
  			build_gdbserver=yes
  			;;
! powerpc64-*-linux*)	gdb_target=linux ;;
  powerpc-*-vxworks*)	gdb_target=vxworks ;;
  powerpc*-*-*)		if test -f ../sim/ppc/Makefile; then
  			  gdb_target=ppc-sim
--- 194,202 ----
  powerpc-*-linux*)	gdb_target=linux
  			build_gdbserver=yes
  			;;
! powerpc64-*-linux*)	gdb_target=linux
! 			build_gdbserver=yes
! 			;;
  powerpc-*-vxworks*)	gdb_target=vxworks ;;
  powerpc*-*-*)		if test -f ../sim/ppc/Makefile; then
  			  gdb_target=ppc-sim
Index: gdb/gdbserver/Makefile.in
===================================================================
RCS file: /cvs/src/src/gdb/gdbserver/Makefile.in,v
retrieving revision 1.22
diff -c -r1.22 Makefile.in
*** gdb/gdbserver/Makefile.in	2 Jan 2003 14:40:35 -0000	1.22
--- gdb/gdbserver/Makefile.in	29 May 2003 06:26:44 -0000
***************
*** 190,196 ****
  	rm -f *.o ${ADD_FILES} *~
  	rm -f gdbserver gdbreplay core make.log
  	rm -f reg-arm.c reg-i386.c reg-ia64.c reg-m68k.c reg-mips.c
! 	rm -f reg-ppc.c reg-sh.c reg-x86-64.c reg-i386-linux.c
  
  distclean: clean
  	rm -f nm.h tm.h xm.h config.status
--- 190,196 ----
  	rm -f *.o ${ADD_FILES} *~
  	rm -f gdbserver gdbreplay core make.log
  	rm -f reg-arm.c reg-i386.c reg-ia64.c reg-m68k.c reg-mips.c
! 	rm -f reg-ppc.c reg-ppc64.c reg-sh.c reg-x86-64.c reg-i386-linux.c
  
  distclean: clean
  	rm -f nm.h tm.h xm.h config.status
***************
*** 260,265 ****
--- 260,266 ----
  linux-ia64-low.o: linux-ia64-low.c $(linux_low_h) $(server_h)
  linux-mips-low.o: linux-mips-low.c $(linux_low_h) $(server_h)
  linux-ppc-low.o: linux-ppc-low.c $(linux_low_h) $(server_h)
+ linux-ppc64-low.o: linux-ppc64-low.c $(linux_low_h) $(server_h)
  linux-s390-low.o: linux-s390-low.c $(linux_low_h) $(server_h)
  linux-sh-low.o: linux-sh-low.c $(linux_low_h) $(server_h)
  linux-x86-64-low.o: linux-x86-64-low.c $(linux_low_h) $(server_h)
***************
*** 285,290 ****
--- 286,294 ----
  reg-ppc.o : reg-ppc.c $(regdef_h)
  reg-ppc.c : $(srcdir)/../regformats/reg-ppc.dat $(regdat_sh)
  	sh $(regdat_sh) $(srcdir)/../regformats/reg-ppc.dat reg-ppc.c
+ reg-ppc64.o : reg-ppc64.c $(regdef_h)
+ reg-ppc64.c : $(srcdir)/../regformats/reg-ppc64.dat $(regdat_sh)
+ 	sh $(regdat_sh) $(srcdir)/../regformats/reg-ppc64.dat reg-ppc64.c
  reg-s390.o : reg-s390.c $(regdef_h)
  reg-s390.c : $(srcdir)/../regformats/reg-s390.dat $(regdat_sh)
  	sh $(regdat_sh) $(srcdir)/../regformats/reg-s390.dat reg-s390.c
Index: gdb/gdbserver/configure.srv
===================================================================
RCS file: /cvs/src/src/gdb/gdbserver/configure.srv,v
retrieving revision 1.5
diff -c -r1.5 configure.srv
*** gdb/gdbserver/configure.srv	11 Jun 2002 17:32:39 -0000	1.5
--- gdb/gdbserver/configure.srv	29 May 2003 06:26:45 -0000
***************
*** 42,49 ****
  			srv_linux_usrregs=yes
  			srv_linux_thread_db=yes
  			;;
!   powerpc*-*-linux*)	srv_regobj=reg-ppc.o
  			srv_tgtobj="linux-low.o linux-ppc-low.o"
  			srv_linux_usrregs=yes
  			srv_linux_thread_db=yes
  			;;
--- 42,54 ----
  			srv_linux_usrregs=yes
  			srv_linux_thread_db=yes
  			;;
!   powerpc-*-linux*)	srv_regobj=reg-ppc.o
  			srv_tgtobj="linux-low.o linux-ppc-low.o"
+ 			srv_linux_usrregs=yes
+ 			srv_linux_thread_db=yes
+ 			;;
+   powerpc64-*-linux*)	srv_regobj=reg-ppc64.o
+ 			srv_tgtobj="linux-low.o linux-ppc64-low.o"
  			srv_linux_usrregs=yes
  			srv_linux_thread_db=yes
  			;;
Index: gdb/gdbserver/linux-ppc64-low.c
===================================================================
RCS file: gdb/gdbserver/linux-ppc64-low.c
diff -N gdb/gdbserver/linux-ppc64-low.c
*** gdb/gdbserver/linux-ppc64-low.c	1 Jan 1970 00:00:00 -0000
--- gdb/gdbserver/linux-ppc64-low.c	29 May 2003 06:26:45 -0000
***************
*** 0 ****
--- 1,120 ----
+ /* GNU/Linux/PowerPC specific low level interface, for the remote server for
+    GDB.
+    Copyright 1995, 1996, 1998, 1999, 2000, 2001, 2002
+    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 "server.h"
+ #include "linux-low.h"
+ 
+ #include <asm/ptrace.h>
+ 
+ #define ppc64_num_regs 71
+ 
+ #define FPR(n) ((PT_FPR0 + (n)) * 8)
+ 
+ /* Currently, don't check/send MQ.  */
+ static int ppc64_regmap[] =
+   {
+     PT_R0  * 8,    PT_R1  * 8,    PT_R2  * 8,    PT_R3  * 8,
+     PT_R4  * 8,    PT_R5  * 8,    PT_R6  * 8,    PT_R7  * 8,
+     PT_R8  * 8,    PT_R9  * 8,    PT_R10 * 8,    PT_R11 * 8,
+     PT_R12 * 8,    PT_R13 * 8,    PT_R14 * 8,    PT_R15 * 8,
+     PT_R16 * 8,    PT_R17 * 8,    PT_R18 * 8,    PT_R19 * 8,
+     PT_R20 * 8,    PT_R21 * 8,    PT_R22 * 8,    PT_R23 * 8,
+     PT_R24 * 8,    PT_R25 * 8,    PT_R26 * 8,    PT_R27 * 8,
+     PT_R28 * 8,    PT_R29 * 8,    PT_R30 * 8,    PT_R31 * 8,
+     FPR (0),       FPR (1),       FPR (2),       FPR (3),
+     FPR (4),       FPR (5),       FPR (6),       FPR (7),
+     FPR (8),       FPR (9),       FPR (10),      FPR (11),
+     FPR (12),      FPR (13),      FPR (14),      FPR (15),
+     FPR (16),      FPR (17),      FPR (18),      FPR (19),
+     FPR (20),      FPR (21),      FPR (22),      FPR (23),
+     FPR (24),      FPR (25),      FPR (26),      FPR (27),
+     FPR (28),      FPR (29),      FPR (30),      FPR (31),
+     PT_NIP * 8,    PT_MSR * 8,    PT_CCR * 8,    PT_LNK * 8,
+     PT_CTR * 8,    PT_XER * 8,    PT_FPSCR * 8,
+   };
+ 
+ static int
+ ppc64_cannot_store_register (int regno)
+ {
+   /* Some kernels do not allow us to store fpscr.  */
+   if (regno == find_regno ("fpscr"))
+     return 2;
+ 
+   return 0;
+ }
+ 
+ static int
+ ppc64_cannot_fetch_register (int regno)
+ {
+   return 0;
+ }
+ 
+ static CORE_ADDR
+ ppc64_get_pc (void)
+ {
+   unsigned long pc;
+ 
+   collect_register_by_name ("pc", &pc);
+   return (CORE_ADDR) pc;
+ }
+ 
+ static void
+ ppc64_set_pc (CORE_ADDR pc)
+ {
+   unsigned long newpc = pc;
+ 
+   supply_register_by_name ("pc", &newpc);
+ }
+ 
+ /* Correct in either endianness.  Note that this file is
+    for PowerPC only, not PowerPC64.
+    This instruction is "twge r2, r2", which GDB uses as a software
+    breakpoint.  */
+ static const unsigned int ppc64_breakpoint = 0x7d821008;
+ #define ppc64_breakpoint_len 4
+ 
+ static int
+ ppc64_breakpoint_at (CORE_ADDR where)
+ {
+   unsigned int insn;
+ 
+   (*the_target->read_memory) (where, (char *) &insn, 4);
+   if (insn == ppc64_breakpoint)
+     return 1;
+   /* If necessary, recognize more trap instructions here.  GDB only uses the
+      one.  */
+   return 0;
+ }
+ 
+ struct linux_target_ops the_low_target = {
+   ppc64_num_regs,
+   ppc64_regmap,
+   ppc64_cannot_fetch_register,
+   ppc64_cannot_store_register,
+   ppc64_get_pc,
+   ppc64_set_pc,
+   (const char *) &ppc64_breakpoint,
+   ppc64_breakpoint_len,
+   NULL,
+   0,
+   ppc64_breakpoint_at,
+ };
Index: gdb/regformats/reg-ppc64.dat
===================================================================
RCS file: gdb/regformats/reg-ppc64.dat
diff -N gdb/regformats/reg-ppc64.dat
*** gdb/regformats/reg-ppc64.dat	1 Jan 1970 00:00:00 -0000
--- gdb/regformats/reg-ppc64.dat	29 May 2003 06:26:45 -0000
***************
*** 0 ****
--- 1,76 ----
+ name:ppc64
+ expedite:r1,pc
+ 64:r0
+ 64:r1
+ 64:r2
+ 64:r3
+ 64:r4
+ 64:r5
+ 64:r6
+ 64:r7
+ 64:r8
+ 64:r9
+ 64:r10
+ 64:r11
+ 64:r12
+ 64:r13
+ 64:r14
+ 64:r15
+ 64:r16
+ 64:r17
+ 64:r18
+ 64:r19
+ 64:r20
+ 64:r21
+ 64:r22
+ 64:r23
+ 64:r24
+ 64:r25
+ 64:r26
+ 64:r27
+ 64:r28
+ 64:r29
+ 64:r30
+ 64:r31
+ 
+ 64:f0
+ 64:f1
+ 64:f2
+ 64:f3
+ 64:f4
+ 64:f5
+ 64:f6
+ 64:f7
+ 64:f8
+ 64:f9
+ 64:f10
+ 64:f11
+ 64:f12
+ 64:f13
+ 64:f14
+ 64:f15
+ 64:f16
+ 64:f17
+ 64:f18
+ 64:f19
+ 64:f20
+ 64:f21
+ 64:f22
+ 64:f23
+ 64:f24
+ 64:f25
+ 64:f26
+ 64:f27
+ 64:f28
+ 64:f29
+ 64:f30
+ 64:f31
+ 
+ 64:pc
+ 64:ps
+ 
+ 32:cr
+ 64:lr
+ 64:ctr
+ 32:xer
+ 32:fpscr


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