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[commit] gdbserver for powerpc64-linux


On Thu, May 19, 2005 at 11:47:23AM -0500, Manoj Iyer wrote:
> 
> Daniel,
> 
> Are you commiting your gdbserver patch? seems like that patch fixes
> atleast 64bit debugger with 64bit debuggee.

I've committed this version, which should also work with the broken
kernel headers.  It does not work if you configure for powerpc64 using
a 32-bit compiler, as I wrote earlier... I know how to fix that, just
need to find the time.

-- 
Daniel Jacobowitz
CodeSourcery, LLC

2005-05-28  Daniel Jacobowitz  <dan@codesourcery.com>

	* configure.tgt (powerpc64-*-linux*): Enable gdbserver.
	* regformats/reg-ppc64.dat: New file.

2005-05-28  Daniel Jacobowitz  <dan@codesourcery.com>

	* Makefile.in (SFILES): Add linux-ppc64-low.c.
	(linux-ppc64-low.o, reg-ppc64.c, reg-ppc64.o): New targets.
	* configure.srv: Add powerpc64-*-linux*.
	* linux-ppc64-low.c: New file.

Index: configure.tgt
===================================================================
RCS file: /home/gcc/repos/src/src/gdb/configure.tgt,v
retrieving revision 1.166
diff -u -p -r1.166 configure.tgt
--- configure.tgt	22 May 2005 19:11:42 -0000	1.166
+++ configure.tgt	28 May 2005 21:41:59 -0000
@@ -147,7 +147,9 @@ powerpc-*-aix*)		gdb_target=aix ;;
 powerpc-*-linux*)	gdb_target=linux
 			build_gdbserver=yes
 			;;
-powerpc64-*-linux*)	gdb_target=linux ;;
+powerpc64-*-linux*)	gdb_target=linux
+			build_gdbserver=yes
+			;;
 powerpc*-*-*)		if test -f ../sim/ppc/Makefile; then
 			  gdb_target=ppc-sim
 			else
Index: gdbserver/Makefile.in
===================================================================
RCS file: /home/gcc/repos/src/src/gdb/gdbserver/Makefile.in,v
retrieving revision 1.30
diff -u -p -r1.30 Makefile.in
--- gdbserver/Makefile.in	23 May 2005 11:20:07 -0000	1.30
+++ gdbserver/Makefile.in	28 May 2005 21:41:59 -0000
@@ -124,7 +124,8 @@ SFILES=	$(srcdir)/gdbreplay.c $(srcdir)/
 	$(srcdir)/linux-ia64-low.c $(srcdir)/linux-low.c \
 	$(srcdir)/linux-m32r-low.c \
 	$(srcdir)/linux-m68k-low.c $(srcdir)/linux-mips-low.c \
-	$(srcdir)/linux-ppc-low.c $(srcdir)/linux-s390-low.c \
+	$(srcdir)/linux-ppc-low.c $(srcdir)/linux-ppc64-low.c \
+	$(srcdir)/linux-s390-low.c \
 	$(srcdir)/linux-sh-low.c $(srcdir)/linux-x86-64-low.c
 
 DEPFILES = @GDBSERVER_DEPFILES@
@@ -271,6 +272,7 @@ linux-ia64-low.o: linux-ia64-low.c $(lin
 linux-m32r-low.o: linux-m32r-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)
@@ -305,6 +307,9 @@ reg-mips.c : $(srcdir)/../regformats/reg
 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) $(srcdir)/../regformats/reg-s390.dat reg-s390.c
Index: gdbserver/configure.srv
===================================================================
RCS file: /home/gcc/repos/src/src/gdb/gdbserver/configure.srv,v
retrieving revision 1.10
diff -u -p -r1.10 configure.srv
--- gdbserver/configure.srv	23 May 2005 11:20:07 -0000	1.10
+++ gdbserver/configure.srv	28 May 2005 21:41:59 -0000
@@ -59,7 +59,12 @@ case "${target}" in
 			srv_linux_usrregs=yes
 			srv_linux_thread_db=yes
 			;;
-  powerpc*-*-linux*)	srv_regobj=reg-ppc.o
+  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
+			;;
+  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
Index: gdbserver/linux-ppc64-low.c
===================================================================
RCS file: gdbserver/linux-ppc64-low.c
diff -N gdbserver/linux-ppc64-low.c
--- /dev/null	1 Jan 1970 00:00:00 -0000
+++ gdbserver/linux-ppc64-low.c	28 May 2005 22:02:21 -0000
@@ -0,0 +1,112 @@
+/* GNU/Linux/PowerPC64 specific low level interface, for the remote server for
+   GDB.
+   Copyright 1995, 1996, 1998, 1999, 2000, 2001, 2002, 2005
+   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 ppc_num_regs 71
+
+/* We use a constant for FPSCR instead of PT_FPSCR, because
+   many shipped PPC64 kernels had the wrong value in ptrace.h.  */
+static int ppc_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,
+  PT_FPR0*8,     PT_FPR0*8 + 8, PT_FPR0*8+16,  PT_FPR0*8+24,
+  PT_FPR0*8+32,  PT_FPR0*8+40,  PT_FPR0*8+48,  PT_FPR0*8+56,
+  PT_FPR0*8+64,  PT_FPR0*8+72,  PT_FPR0*8+80,  PT_FPR0*8+88,
+  PT_FPR0*8+96,  PT_FPR0*8+104,  PT_FPR0*8+112,  PT_FPR0*8+120,
+  PT_FPR0*8+128, PT_FPR0*8+136,  PT_FPR0*8+144,  PT_FPR0*8+152,
+  PT_FPR0*8+160,  PT_FPR0*8+168,  PT_FPR0*8+176,  PT_FPR0*8+184,
+  PT_FPR0*8+192,  PT_FPR0*8+200,  PT_FPR0*8+208,  PT_FPR0*8+216,
+  PT_FPR0*8+224,  PT_FPR0*8+232,  PT_FPR0*8+240,  PT_FPR0*8+248,
+  PT_NIP * 8,    PT_MSR * 8,    PT_CCR * 8,    PT_LNK * 8,
+  PT_CTR * 8,    PT_XER * 8,    PT_FPR0*8 + 256 };
+
+static int
+ppc_cannot_store_register (int regno)
+{
+  return 0;
+}
+
+static int
+ppc_cannot_fetch_register (int regno)
+{
+  return 0;
+}
+
+static CORE_ADDR
+ppc_get_pc (void)
+{
+  unsigned long pc;
+
+  collect_register_by_name ("pc", &pc);
+  return (CORE_ADDR) pc;
+}
+
+static void
+ppc_set_pc (CORE_ADDR pc)
+{
+  unsigned long newpc = pc;
+
+  supply_register_by_name ("pc", &newpc);
+}
+
+/* Correct in either endianness.
+   This instruction is "twge r2, r2", which GDB uses as a software
+   breakpoint.  */
+static const unsigned int ppc_breakpoint = 0x7d821008;
+#define ppc_breakpoint_len 4
+
+static int
+ppc_breakpoint_at (CORE_ADDR where)
+{
+  unsigned int insn;
+
+  (*the_target->read_memory) (where, (char *) &insn, 4);
+  if (insn == ppc_breakpoint)
+    return 1;
+  /* If necessary, recognize more trap instructions here.  GDB only uses the
+     one.  */
+  return 0;
+}
+
+struct linux_target_ops the_low_target = {
+  ppc_num_regs,
+  ppc_regmap,
+  ppc_cannot_fetch_register,
+  ppc_cannot_store_register,
+  ppc_get_pc,
+  ppc_set_pc,
+  (const char *) &ppc_breakpoint,
+  ppc_breakpoint_len,
+  NULL,
+  0,
+  ppc_breakpoint_at,
+};
Index: regformats/reg-ppc64.dat
===================================================================
RCS file: regformats/reg-ppc64.dat
diff -N regformats/reg-ppc64.dat
--- /dev/null	1 Jan 1970 00:00:00 -0000
+++ regformats/reg-ppc64.dat	28 May 2005 21:41:59 -0000
@@ -0,0 +1,76 @@
+name:ppc
+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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