From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (qmail 11319 invoked by alias); 18 May 2005 13:02:45 -0000 Mailing-List: contact gdb-patches-help@sources.redhat.com; run by ezmlm Precedence: bulk List-Subscribe: List-Archive: List-Post: List-Help: , Sender: gdb-patches-owner@sources.redhat.com Received: (qmail 10694 invoked from network); 18 May 2005 13:02:21 -0000 Received: from unknown (HELO nevyn.them.org) (66.93.172.17) by sourceware.org with SMTP; 18 May 2005 13:02:21 -0000 Received: from drow by nevyn.them.org with local (Exim 4.50) id 1DYOBn-00038k-K7; Wed, 18 May 2005 09:02:19 -0400 Date: Wed, 18 May 2005 16:01:00 -0000 From: Daniel Jacobowitz To: Manoj Iyer Cc: gdb-patches@sources.redhat.com Subject: Re: [RFC] gdb.server testcases (resend) Message-ID: <20050518130218.GA11918@nevyn.them.org> Mail-Followup-To: Manoj Iyer , gdb-patches@sources.redhat.com References: <20050518012521.GB8672@nevyn.them.org> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: User-Agent: Mutt/1.5.8i X-SW-Source: 2005-05/txt/msg00451.txt.bz2 On Tue, May 17, 2005 at 11:39:27PM -0500, Manoj Iyer wrote: > > > Daniel, > > I misunderstood the use of gdb.server directory. I thought that this > directory is for testing gdbserver remote debugging functionality. I am > trying to get gdbserver working on ppc. As a starting point I used these > tests. But you are correct. In this perspective my testcases seem useless. Take a look 'round the list archives for the DejaGNU board file you'll need to run the entire testsuite using gdbserver. There are about a hundred failures I haven't really looked into yet, but enough tests pass to be useful. > To begin with gdbserver program fails outright on ppc64 PPC970 Altivec > hardware: > > ./gdbserver uranus.ltc.austin.ibm.com:1234 /tmp/server > Process /tmp/server created; pid = 30836 > reading register 1: Input/output error > Exiting > > I am trying to chase down the problem and get gdbserver working. If you > have any insight into this problem please advice. Gdbserver does not have any configuration for ppc64. I have a ppc64 port around here somewhere; I'll attach it to this message. Can you test it for me? I never submitted it because I had no way to test it. Just like the PPC port, it doesn't support NPTL; we can do that separately. -- Daniel Jacobowitz CodeSourcery, LLC Index: src/gdb/configure.tgt =================================================================== RCS file: /cvs/src/src/gdb/configure.tgt,v retrieving revision 1.161 diff -u -p -r1.161 configure.tgt --- src/gdb/configure.tgt 18 Mar 2005 18:59:17 -0000 1.161 +++ src/gdb/configure.tgt 29 Mar 2005 16:33:20 -0000 @@ -146,7 +146,9 @@ 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: src/gdb/gdbserver/Makefile.in =================================================================== RCS file: /cvs/src/src/gdb/gdbserver/Makefile.in,v retrieving revision 1.28 diff -u -p -r1.28 Makefile.in --- src/gdb/gdbserver/Makefile.in 4 Mar 2005 18:16:25 -0000 1.28 +++ src/gdb/gdbserver/Makefile.in 29 Mar 2005 16:33:21 -0000 @@ -122,7 +122,8 @@ SFILES= $(srcdir)/gdbreplay.c $(srcdir)/ $(srcdir)/i387-fp.c \ $(srcdir)/linux-ia64-low.c $(srcdir)/linux-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@ @@ -265,6 +266,7 @@ linux-i386-low.o: linux-i386-low.c $(lin 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) @@ -290,6 +292,9 @@ 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) $(srcdir)/../regformats/reg-s390.dat reg-s390.c Index: src/gdb/gdbserver/configure.srv =================================================================== RCS file: /cvs/src/src/gdb/gdbserver/configure.srv,v retrieving revision 1.8 diff -u -p -r1.8 configure.srv --- src/gdb/gdbserver/configure.srv 21 Nov 2004 03:09:39 -0000 1.8 +++ src/gdb/gdbserver/configure.srv 29 Mar 2005 16:33:21 -0000 @@ -44,7 +44,12 @@ case "${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: src/gdb/gdbserver/linux-ppc64-low.c =================================================================== RCS file: src/gdb/gdbserver/linux-ppc64-low.c diff -N src/gdb/gdbserver/linux-ppc64-low.c --- /dev/null 1 Jan 1970 00:00:00 -0000 +++ src/gdb/gdbserver/linux-ppc64-low.c 29 Mar 2005 16:33:22 -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 + +#define ppc_num_regs 71 + +/* Currently, don't check/send MQ. */ +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_FPSCR * 8, }; + +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); +printf ("Stop pc is 0x%lx\n", 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: src/gdb/regformats/reg-ppc64.dat =================================================================== RCS file: src/gdb/regformats/reg-ppc64.dat diff -N src/gdb/regformats/reg-ppc64.dat --- /dev/null 1 Jan 1970 00:00:00 -0000 +++ src/gdb/regformats/reg-ppc64.dat 29 Mar 2005 16:33:22 -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