Re: Fixing Linux/SPARC

[Daniel Jacobowitz <drow@mvista.com>]

On Wed, Oct 17, 2001 at 04:07:52PM +0200, Mark Kettenis wrote:
> Hi Dan & other interested folks,
> 
> Something like the code below (completely untested, probably doesn't
> even compile) is needed to fix Linux/SPARC.

Compiles, after fixing the obvious typos.  I'm going to commit it to
the mainline as obvious, since it takes Linux/SPARC from not-building
to building; test results are abysmal, though.  It looks as if we can't
figure out the memory location variables are stored at correctly. 
They're being accessed in the unmapped 0x90000000 segment instead of
0x70000000, and not even at the right offsets.  I'll look in to it more
later.


-- 
Daniel Jacobowitz                           Carnegie Mellon University
MontaVista Software                         Debian GNU/Linux Developer

Index: ChangeLog
===================================================================
RCS file: /cvs/src/src/gdb/ChangeLog,v
retrieving revision 1.1784
retrieving revision 1.1785
diff -u -p -r1.1784 -r1.1785
--- ChangeLog	2001/11/17 00:08:10	1.1784
+++ ChangeLog	2001/11/17 18:38:29	1.1785
@@ -1,3 +1,10 @@
+2001-11-17  Daniel Jacobowitz  <drow@mvista.com>
+
+	* Makefile.in: Add mips-linux-nat.c, mips-linux-tdep.c,
+	and sparc-linux-nat.c to ALLDEPFILES.  Add dependencies.
+	* config/sparc/linux.mh: Add sparc-linux-nat.o to NATDEPFILES.
+	* sparc-linux-nat.c: New file, from Mark Kettenis.
+
 2001-11-16  Jakub Jelinek  <jakub@redhat.com>
 
 	* dwarf2read.c (dwarf_str_buffer): New.
Index: Makefile.in
===================================================================
RCS file: /cvs/src/src/gdb/Makefile.in,v
retrieving revision 1.128
retrieving revision 1.129
diff -u -p -r1.128 -r1.129
--- Makefile.in	2001/11/16 19:53:29	1.128
+++ Makefile.in	2001/11/17 18:38:29	1.129
@@ -1190,6 +1190,7 @@ ALLDEPFILES = 29k-share/udi/udip2soc.c 2
 	m68k-tdep.c \
 	m88k-nat.c m88k-tdep.c mac-nat.c \
 	mcore-tdep.c \
+	mips-linux-nat.c mips-linux-tdep.c \
 	mips-nat.c \
 	mips-tdep.c mipsm3-nat.c mipsv4-nat.c news-xdep.c \
 	nindy-share/Onindy.c nindy-share/nindy.c \
@@ -1206,7 +1207,8 @@ ALLDEPFILES = 29k-share/udi/udip2soc.c 2
 	rs6000-nat.c rs6000-tdep.c \
 	s390-tdep.c s390-nat.c \
 	ser-go32.c ser-pipe.c ser-tcp.c \
-	sh-tdep.c solib.c solib-svr4.c solib-sunos.c sparc-nat.c \
+	sh-tdep.c solib.c solib-svr4.c solib-sunos.c sparc-linux-nat.c \
+	sparc-nat.c \
 	sparc-tdep.c sparcl-tdep.c sun3-nat.c \
 	symm-tdep.c symm-nat.c \
 	vax-tdep.c \
@@ -1721,6 +1723,11 @@ mem-break.o: mem-break.c $(defs_h) 
 minsyms.o: minsyms.c $(bfd_h) $(defs_h) $(objfiles_h) $(symfile_h) \
 	$(symtab_h) $(gdb_string_h) $(value_h) $(cp_abi_h)
 
+mips-linux-nat.o: mips-linux-nat.c $(defs_h)
+
+mips-linux-tdep.o: mips-linux-tdep.c $(defs_h) $(gdbcore_h) $(target_h) \
+	solib-svr4.h
+
 mips-nat.o: mips-nat.c $(defs_h) $(gdbcore_h) $(inferior_h) $(regcache_h)
 
 mips-tdep.o: mips-tdep.c $(defs_h) $(gdbcmd_h) $(gdbcore_h) \
@@ -2019,6 +2026,8 @@ source.o: source.c $(defs_h) $(expressio
 	$(gdbcore_h) $(language_h) $(objfiles_h) gdb_regex.h $(symfile_h) \
 	$(symtab_h) $(gdb_string_h) $(source_h) $(completer_h) $(linespec_h) \
 	$(ui_out_h)
+
+sparc-linux-nat.o: sparc-linux-nat.c $(defs_h) $(regcache_h)
 
 sparc-nat.o: sparc-nat.c $(bfd_h) $(defs_h) $(inferior_h) $(gdbcore_h) \
 	$(target_h) $(regcache_h)
Index: config/sparc/linux.mh
===================================================================
RCS file: /cvs/src/src/gdb/config/sparc/linux.mh,v
retrieving revision 1.3
retrieving revision 1.4
diff -u -p -r1.3 -r1.4
--- linux.mh	2001/10/14 20:42:07	1.3
+++ linux.mh	2001/11/17 18:38:29	1.4
@@ -5,7 +5,7 @@ XDEPFILES=
 
 NAT_FILE= nm-linux.h
 NATDEPFILES= fork-child.o infptrace.o inftarg.o corelow.o sparc-nat.o \
-	proc-service.o thread-db.o lin-lwp.o
+	proc-service.o thread-db.o lin-lwp.o sparc-linux-nat.o
 
 # The dynamically loaded libthread_db needs access to symbols in the
 # gdb executable.




/* Native-dependent code for Linux/SPARC.
   Copyright 2001 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 "defs.h"
#include "regcache.h"
   
#include <sys/procfs.h>

/* Prototypes for supply_gregset etc.  */
#include "gregset.h"

void
supply_gregset (elf_gregset_t *gregsetp)
{
  elf_greg_t *regp = (elf_greg_t *) gregsetp;
  int i;

  for (i = G0_REGNUM; i <= I7_REGNUM; i++)
    supply_register (i, (char *) (regp + (i - G0_REGNUM)));

  supply_register (PS_REGNUM, (char *) (regp + 32));

  supply_register (PC_REGNUM, (char *) (regp + 33));
  supply_register (NPC_REGNUM, (char *) (regp + 34));
  supply_register (Y_REGNUM, (char *) (regp + 35));

  supply_register (WIM_REGNUM, (char *) (regp + 36));
  supply_register (TBR_REGNUM, (char *) (regp + 37));

  /* Fill inaccessible registers with zero.  */
  supply_register (CPS_REGNUM, NULL);
}

void
fill_gregset (elf_gregset_t *gregsetp, int regno)
{
  elf_greg_t *regp = (elf_greg_t *) gregsetp;
  int i;

  for (i = G0_REGNUM; i <= I7_REGNUM; i++)
    if (regno == -1 || regno == i)
      read_register_gen (i, (char *) (regp + (i - G0_REGNUM)));

  if (regno == -1 || regno == PS_REGNUM)
    read_register_gen (PS_REGNUM, (char *) (regp + 32));

  if (regno == -1 || regno == PC_REGNUM)
    read_register_gen (PC_REGNUM, (char *) (regp + 33));
  if (regno == -1 || regno == NPC_REGNUM)
    read_register_gen (NPC_REGNUM, (char *) (regp + 34));
  if (regno == -1 || regno == Y_REGNUM)
    read_register_gen (Y_REGNUM, (char *) (regp + 35));

  if (regno == -1 || regno == WIM_REGNUM)
    read_register_gen (WIM_REGNUM, (char *) (regp + 36));
  if (regno == -1 || regno == TBR_REGNUM)
    read_register_gen (TBR_REGNUM, (char *) (regp + 37));
}

void
supply_fpregset (elf_fpregset_t *fpregsetp)
{
  int i;

  for (i = FP0_REGNUM; i < FP0_REGNUM + 32; i++)
    supply_register (i, (char *) &fpregsetp->pr_fr.pr_regs[i - FP0_REGNUM]);

  supply_register (FPS_REGNUM, (char *) &fpregsetp->pr_fsr);
}

void
fill_fpregset (elf_fpregset_t *fpregsetp, int regno)
{
  int i;

  for (i = FP0_REGNUM; i < FP0_REGNUM + 32; i++)
    if (regno == -1 || regno == i)
      read_register_gen (i, (char *) &fpregsetp->pr_fr.pr_regs[i - FP0_REGNUM]);

  if (regno == -1 || regno == FPS_REGNUM)
    read_register_gen (FPS_REGNUM, (char *) &fpregsetp->pr_fsr);
}