[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]

gdb for NetBSD/powerpc

gdb ですが、ちょっといじっていたら core の backtrace ぐらいはできる
ようになりました。というわけでとても低完成度ですが、とりあえず出して
おきます。

ptrace(2)のMD部分が不完全なので、これ以上やるならまずカーネルを直さ
ないとダメっぽいです。
# それとも procfs 使うか?

diff -c /usr/src/gnu/usr.bin/gdb/Makefile usr.bin/gdb/Makefile
*** /usr/src/gnu/usr.bin/gdb/Makefile	Fri Mar 26 23:53:42 1999
--- usr.bin/gdb/Makefile	Mon Apr 26 13:55:52 1999
***************
*** 79,85 ****
  NATDEPFILES.ns32k=	ns32knbsd-nat.c
  TDEPFILES.ns32k=	ns32k-tdep.c
  
! NATDEPFILES.powerpc=	rs6000-nat.c
  TDEPFILES.powerpc=	rs6000-tdep.c
  
  NATDEPFILES.sparc=	sparcnbsd-nat.c
--- 79,85 ----
  NATDEPFILES.ns32k=	ns32knbsd-nat.c
  TDEPFILES.ns32k=	ns32k-tdep.c
  
! NATDEPFILES.powerpc=	ppcnbsd-nat.c
  TDEPFILES.powerpc=	rs6000-tdep.c
  
  NATDEPFILES.sparc=	sparcnbsd-nat.c
diff -cdrN /a/src/gnu/dist/gdb/config/powerpc/nm-nbsd.h dist/gdb/config/powerpc/nm-nbsd.h
*** /a/src/gnu/dist/gdb/config/powerpc/nm-nbsd.h	Sat Oct 18 21:11:38 1997
--- dist/gdb/config/powerpc/nm-nbsd.h	Mon Apr 26 15:49:07 1999
***************
*** 19,25 ****
  Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.  */
  
  /* Need to define this before including the common nm-nbsd.h. */
! #define SVR4_SHARED_LIBS
  
  /* Get generic NetBSD native definitions. */
  #include "nm-nbsd.h"
--- 19,25 ----
  Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.  */
  
  /* Need to define this before including the common nm-nbsd.h. */
! #define SVR4_SHARED_LIBS 1
  
  /* Get generic NetBSD native definitions. */
  #include "nm-nbsd.h"
diff -cdrN /a/src/gnu/dist/gdb/ppcnbsd-nat.c dist/gdb/ppcnbsd-nat.c
*** /a/src/gnu/dist/gdb/ppcnbsd-nat.c	Thu Jan  1 09:00:00 1970
--- dist/gdb/ppcnbsd-nat.c	Mon Apr 26 15:06:39 1999
***************
*** 0 ****
--- 1,112 ----
+ /* NetBSD/powerpc native-dependent code for GDB, the GNU debugger.
+    Copyright 1986, 1987, 1989, 1991, 1992, 1994, 1995, 1996, 1997
+ 	     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 "inferior.h"
+ #include "target.h"
+ #include "gdbcore.h"
+ #include <sys/ptrace.h>
+ #include <sys/param.h>
+ #include <machine/reg.h>
+ #include <machine/frame.h>
+ #include <machine/pcb.h>
+ 
+ static void
+ fetch_core_registers PARAMS ((char *, unsigned int, int, CORE_ADDR));
+ 
+ void
+ fetch_inferior_registers (regno)
+   int regno;
+ {
+     fprintf_unfiltered (gdb_stderr,
+ 	"gdb error: `fetch_inferior_registers' is not implemented.\n");
+ }
+ 
+ /* Store our register values back into the inferior.
+    If REGNO is -1, do this for all registers.
+    Otherwise, REGNO specifies which register (so we can save time).  */
+ 
+ void
+ store_inferior_registers (regno)
+      int regno;
+ {
+     fprintf_unfiltered (gdb_stderr,
+ 	"gdb error: `store_inferior_registers' is not implemented.\n");
+ }
+ 
+ static void
+ fetch_core_registers (core_reg_sect, core_reg_size, which, reg_addr)
+      char *core_reg_sect;
+      unsigned core_reg_size;
+      int which;
+      CORE_ADDR reg_addr;	/* Unused in this version */
+ {
+   struct md_coredump *core_reg;
+   struct trapframe *tf;
+   struct fpreg *fs;
+   register int regnum;
+ 
+   /* We get everything from the .reg section. */
+   if (which != 0)
+     return;
+ 
+   core_reg = (struct md_coredump *)core_reg_sect;
+   tf = &core_reg->frame;
+ #if 0
+   fs = &core_reg->md_fpstate;
+ #endif
+ 
+   if (core_reg_size < sizeof(*core_reg)) {
+     fprintf_unfiltered (gdb_stderr, "Couldn't read regs from core file\n");
+     return;
+   }
+ 
+   /* Integer registers */
+   for (regnum = 0; regnum < 32; regnum++)
+     *(long *) &registers[REGISTER_BYTE (regnum)] = tf->fixreg[regnum];
+ 
+ #if 0
+   /* Floating point registers */
+   memcpy (&registers[REGISTER_BYTE (FP0_REGNUM)],
+ 	  &fs->fpr_regs[0], sizeof(fs->fpr_regs));
+ #endif
+ 
+   /* Special registers (PC, LR) */
+   *(long *) &registers[REGISTER_BYTE (PC_REGNUM)] = tf->srr0;
+   *(long *) &registers[REGISTER_BYTE (LR_REGNUM)] = tf->lr;
+ 
+   registers_fetched ();
+ }
+ 
+ 
+ /* Register that we are able to handle rs6000 core file formats. */
+ 
+ static struct core_fns rs6000_core_fns =
+ {
+   bfd_target_elf_flavour,
+   fetch_core_registers,
+   NULL
+ };
+ 
+ void
+ _initialize_core_rs6000 ()
+ {
+   add_core_fns (&rs6000_core_fns);
+ }