xref: /openbsd-src/gnu/usr.bin/binutils-2.17/bfd/netbsd-core.c (revision 3d8817e467ea46cf4772788d6804dd293abfb01a)
1*3d8817e4Smiod /* BFD back end for NetBSD style core files
2*3d8817e4Smiod    Copyright 1988, 1989, 1991, 1992, 1993, 1996, 1998, 1999, 2000, 2001,
3*3d8817e4Smiod    2002, 2003, 2004, 2005
4*3d8817e4Smiod    Free Software Foundation, Inc.
5*3d8817e4Smiod    Written by Paul Kranenburg, EUR
6*3d8817e4Smiod 
7*3d8817e4Smiod    This file is part of BFD, the Binary File Descriptor library.
8*3d8817e4Smiod 
9*3d8817e4Smiod    This program is free software; you can redistribute it and/or modify
10*3d8817e4Smiod    it under the terms of the GNU General Public License as published by
11*3d8817e4Smiod    the Free Software Foundation; either version 2 of the License, or
12*3d8817e4Smiod    (at your option) any later version.
13*3d8817e4Smiod 
14*3d8817e4Smiod    This program is distributed in the hope that it will be useful,
15*3d8817e4Smiod    but WITHOUT ANY WARRANTY; without even the implied warranty of
16*3d8817e4Smiod    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
17*3d8817e4Smiod    GNU General Public License for more details.
18*3d8817e4Smiod 
19*3d8817e4Smiod    You should have received a copy of the GNU General Public License
20*3d8817e4Smiod    along with this program; if not, write to the Free Software
21*3d8817e4Smiod    Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston, MA 02110-1301, USA.  */
22*3d8817e4Smiod 
23*3d8817e4Smiod #include "bfd.h"
24*3d8817e4Smiod #include "sysdep.h"
25*3d8817e4Smiod #include "libbfd.h"
26*3d8817e4Smiod #include "libaout.h"           /* BFD a.out internal data structures.  */
27*3d8817e4Smiod 
28*3d8817e4Smiod #include <sys/param.h>
29*3d8817e4Smiod #include <sys/dir.h>
30*3d8817e4Smiod #include <signal.h>
31*3d8817e4Smiod #include <sys/core.h>
32*3d8817e4Smiod 
33*3d8817e4Smiod /* The machine ID for OpenBSD/sparc64 and older versions of
34*3d8817e4Smiod    NetBSD/sparc64 overlaps with M_MIPS1.  */
35*3d8817e4Smiod #define M_SPARC64_OPENBSD	M_MIPS1
36*3d8817e4Smiod 
37*3d8817e4Smiod /* Offset of StackGhost cookie within `struct md_coredump' on
38*3d8817e4Smiod    OpenBSD/sparc.  */
39*3d8817e4Smiod #define SPARC_WCOOKIE_OFFSET	344
40*3d8817e4Smiod 
41*3d8817e4Smiod /* Offset of StackGhost cookie within `struct md_coredump' on
42*3d8817e4Smiod    OpenBSD/sparc64.  */
43*3d8817e4Smiod #define SPARC64_WCOOKIE_OFFSET	832
44*3d8817e4Smiod 
45*3d8817e4Smiod #define netbsd_core_file_matches_executable_p generic_core_file_matches_executable_p
46*3d8817e4Smiod 
47*3d8817e4Smiod struct netbsd_core_struct
48*3d8817e4Smiod {
49*3d8817e4Smiod   struct core core;
50*3d8817e4Smiod } *rawptr;
51*3d8817e4Smiod 
52*3d8817e4Smiod /* Handle NetBSD-style core dump file.  */
53*3d8817e4Smiod 
54*3d8817e4Smiod static const bfd_target *
netbsd_core_file_p(bfd * abfd)55*3d8817e4Smiod netbsd_core_file_p (bfd *abfd)
56*3d8817e4Smiod {
57*3d8817e4Smiod   int val;
58*3d8817e4Smiod   unsigned i;
59*3d8817e4Smiod   file_ptr offset;
60*3d8817e4Smiod   asection *asect;
61*3d8817e4Smiod   struct core core;
62*3d8817e4Smiod   struct coreseg coreseg;
63*3d8817e4Smiod   bfd_size_type amt = sizeof core;
64*3d8817e4Smiod 
65*3d8817e4Smiod   val = bfd_bread (&core, amt, abfd);
66*3d8817e4Smiod   if (val != sizeof core)
67*3d8817e4Smiod     {
68*3d8817e4Smiod       /* Too small to be a core file.  */
69*3d8817e4Smiod       bfd_set_error (bfd_error_wrong_format);
70*3d8817e4Smiod       return 0;
71*3d8817e4Smiod     }
72*3d8817e4Smiod 
73*3d8817e4Smiod   if (CORE_GETMAGIC (core) != COREMAGIC)
74*3d8817e4Smiod     {
75*3d8817e4Smiod       bfd_set_error (bfd_error_wrong_format);
76*3d8817e4Smiod       return 0;
77*3d8817e4Smiod     }
78*3d8817e4Smiod 
79*3d8817e4Smiod   amt = sizeof (struct netbsd_core_struct);
80*3d8817e4Smiod   rawptr = (struct netbsd_core_struct *) bfd_zalloc (abfd, amt);
81*3d8817e4Smiod   if (rawptr == NULL)
82*3d8817e4Smiod     return 0;
83*3d8817e4Smiod 
84*3d8817e4Smiod   rawptr->core = core;
85*3d8817e4Smiod   abfd->tdata.netbsd_core_data = rawptr;
86*3d8817e4Smiod 
87*3d8817e4Smiod   offset = core.c_hdrsize;
88*3d8817e4Smiod   for (i = 0; i < core.c_nseg; i++)
89*3d8817e4Smiod     {
90*3d8817e4Smiod       const char *sname;
91*3d8817e4Smiod       flagword flags;
92*3d8817e4Smiod 
93*3d8817e4Smiod       if (bfd_seek (abfd, offset, SEEK_SET) != 0)
94*3d8817e4Smiod 	goto punt;
95*3d8817e4Smiod 
96*3d8817e4Smiod       val = bfd_bread (&coreseg, sizeof coreseg, abfd);
97*3d8817e4Smiod       if (val != sizeof coreseg)
98*3d8817e4Smiod 	{
99*3d8817e4Smiod 	  bfd_set_error (bfd_error_file_truncated);
100*3d8817e4Smiod 	  goto punt;
101*3d8817e4Smiod 	}
102*3d8817e4Smiod       if (CORE_GETMAGIC (coreseg) != CORESEGMAGIC)
103*3d8817e4Smiod 	{
104*3d8817e4Smiod 	  bfd_set_error (bfd_error_wrong_format);
105*3d8817e4Smiod 	  goto punt;
106*3d8817e4Smiod 	}
107*3d8817e4Smiod 
108*3d8817e4Smiod       offset += core.c_seghdrsize;
109*3d8817e4Smiod 
110*3d8817e4Smiod       switch (CORE_GETFLAG (coreseg))
111*3d8817e4Smiod 	{
112*3d8817e4Smiod 	case CORE_CPU:
113*3d8817e4Smiod 	  sname = ".reg";
114*3d8817e4Smiod 	  flags = SEC_ALLOC + SEC_HAS_CONTENTS;
115*3d8817e4Smiod 	  break;
116*3d8817e4Smiod 	case CORE_DATA:
117*3d8817e4Smiod 	  sname = ".data";
118*3d8817e4Smiod 	  flags = SEC_ALLOC + SEC_LOAD + SEC_HAS_CONTENTS;
119*3d8817e4Smiod 	  break;
120*3d8817e4Smiod 	case CORE_STACK:
121*3d8817e4Smiod 	  sname = ".stack";
122*3d8817e4Smiod 	  flags = SEC_ALLOC + SEC_LOAD + SEC_HAS_CONTENTS;
123*3d8817e4Smiod 	  break;
124*3d8817e4Smiod 	default:
125*3d8817e4Smiod 	  sname = ".unknown";
126*3d8817e4Smiod 	  flags = SEC_ALLOC + SEC_HAS_CONTENTS;
127*3d8817e4Smiod 	  break;
128*3d8817e4Smiod 	}
129*3d8817e4Smiod       asect = bfd_make_section_anyway (abfd, sname);
130*3d8817e4Smiod       if (asect == NULL)
131*3d8817e4Smiod 	goto punt;
132*3d8817e4Smiod 
133*3d8817e4Smiod       asect->flags = flags;
134*3d8817e4Smiod       asect->size = coreseg.c_size;
135*3d8817e4Smiod       asect->vma = coreseg.c_addr;
136*3d8817e4Smiod       asect->filepos = offset;
137*3d8817e4Smiod       asect->alignment_power = 2;
138*3d8817e4Smiod 
139*3d8817e4Smiod       if (CORE_GETFLAG (coreseg) == CORE_CPU)
140*3d8817e4Smiod 	{
141*3d8817e4Smiod 	  bfd_size_type wcookie_offset;
142*3d8817e4Smiod 
143*3d8817e4Smiod 	  switch (CORE_GETMID (core))
144*3d8817e4Smiod 	    {
145*3d8817e4Smiod 	    case M_SPARC_NETBSD:
146*3d8817e4Smiod 	      wcookie_offset = SPARC_WCOOKIE_OFFSET;
147*3d8817e4Smiod 	      break;
148*3d8817e4Smiod 	    case M_SPARC64_OPENBSD:
149*3d8817e4Smiod 	      wcookie_offset = SPARC64_WCOOKIE_OFFSET;
150*3d8817e4Smiod 	      break;
151*3d8817e4Smiod 	    default:
152*3d8817e4Smiod 	      wcookie_offset = 0;
153*3d8817e4Smiod 	      break;
154*3d8817e4Smiod 	    }
155*3d8817e4Smiod 
156*3d8817e4Smiod 	  if (wcookie_offset > 0 && coreseg.c_size > wcookie_offset)
157*3d8817e4Smiod 	    {
158*3d8817e4Smiod 	      /* Truncate the .reg section.  */
159*3d8817e4Smiod 	      asect->size = wcookie_offset;
160*3d8817e4Smiod 
161*3d8817e4Smiod 	      /* And create the .wcookie section.  */
162*3d8817e4Smiod 	      asect = bfd_make_section_anyway (abfd, ".wcookie");
163*3d8817e4Smiod 	      if (asect == NULL)
164*3d8817e4Smiod 		goto punt;
165*3d8817e4Smiod 
166*3d8817e4Smiod 	      asect->flags = SEC_ALLOC + SEC_HAS_CONTENTS;
167*3d8817e4Smiod 	      asect->size = coreseg.c_size - wcookie_offset;
168*3d8817e4Smiod 	      asect->vma = 0;
169*3d8817e4Smiod 	      asect->filepos = offset + wcookie_offset;
170*3d8817e4Smiod 	      asect->alignment_power = 2;
171*3d8817e4Smiod 	    }
172*3d8817e4Smiod 	}
173*3d8817e4Smiod 
174*3d8817e4Smiod       offset += coreseg.c_size;
175*3d8817e4Smiod     }
176*3d8817e4Smiod 
177*3d8817e4Smiod   /* Set architecture from machine ID.  */
178*3d8817e4Smiod   switch (CORE_GETMID (core))
179*3d8817e4Smiod     {
180*3d8817e4Smiod     case M_ALPHA_NETBSD:
181*3d8817e4Smiod       bfd_default_set_arch_mach (abfd, bfd_arch_alpha, 0);
182*3d8817e4Smiod       break;
183*3d8817e4Smiod 
184*3d8817e4Smiod     case M_ARM6_NETBSD:
185*3d8817e4Smiod       bfd_default_set_arch_mach (abfd, bfd_arch_arm, bfd_mach_arm_3);
186*3d8817e4Smiod       break;
187*3d8817e4Smiod 
188*3d8817e4Smiod     case M_X86_64_NETBSD:
189*3d8817e4Smiod       bfd_default_set_arch_mach (abfd, bfd_arch_i386, bfd_mach_x86_64);
190*3d8817e4Smiod       break;
191*3d8817e4Smiod 
192*3d8817e4Smiod     case M_386_NETBSD:
193*3d8817e4Smiod       bfd_default_set_arch_mach (abfd, bfd_arch_i386, bfd_mach_i386_i386);
194*3d8817e4Smiod       break;
195*3d8817e4Smiod 
196*3d8817e4Smiod     case M_68K_NETBSD:
197*3d8817e4Smiod     case M_68K4K_NETBSD:
198*3d8817e4Smiod       bfd_default_set_arch_mach (abfd, bfd_arch_m68k, 0);
199*3d8817e4Smiod       break;
200*3d8817e4Smiod 
201*3d8817e4Smiod     case M_88K_OPENBSD:
202*3d8817e4Smiod       bfd_default_set_arch_mach (abfd, bfd_arch_m88k, 0);
203*3d8817e4Smiod       break;
204*3d8817e4Smiod 
205*3d8817e4Smiod     case M_HPPA_OPENBSD:
206*3d8817e4Smiod       bfd_default_set_arch_mach (abfd, bfd_arch_hppa, bfd_mach_hppa11);
207*3d8817e4Smiod       break;
208*3d8817e4Smiod 
209*3d8817e4Smiod     case M_POWERPC_NETBSD:
210*3d8817e4Smiod       bfd_default_set_arch_mach (abfd, bfd_arch_powerpc, bfd_mach_ppc);
211*3d8817e4Smiod       break;
212*3d8817e4Smiod 
213*3d8817e4Smiod     case M_SPARC_NETBSD:
214*3d8817e4Smiod       bfd_default_set_arch_mach (abfd, bfd_arch_sparc, bfd_mach_sparc);
215*3d8817e4Smiod       break;
216*3d8817e4Smiod 
217*3d8817e4Smiod     case M_SPARC64_NETBSD:
218*3d8817e4Smiod     case M_SPARC64_OPENBSD:
219*3d8817e4Smiod       bfd_default_set_arch_mach (abfd, bfd_arch_sparc, bfd_mach_sparc_v9);
220*3d8817e4Smiod       break;
221*3d8817e4Smiod 
222*3d8817e4Smiod     case M_VAX_NETBSD:
223*3d8817e4Smiod     case M_VAX4K_NETBSD:
224*3d8817e4Smiod       bfd_default_set_arch_mach (abfd, bfd_arch_vax, 0);
225*3d8817e4Smiod       break;
226*3d8817e4Smiod     }
227*3d8817e4Smiod 
228*3d8817e4Smiod   /* OK, we believe you.  You're a core file (sure, sure).  */
229*3d8817e4Smiod   return abfd->xvec;
230*3d8817e4Smiod 
231*3d8817e4Smiod  punt:
232*3d8817e4Smiod   bfd_release (abfd, abfd->tdata.any);
233*3d8817e4Smiod   abfd->tdata.any = NULL;
234*3d8817e4Smiod   bfd_section_list_clear (abfd);
235*3d8817e4Smiod   return 0;
236*3d8817e4Smiod }
237*3d8817e4Smiod 
238*3d8817e4Smiod static char*
netbsd_core_file_failing_command(bfd * abfd)239*3d8817e4Smiod netbsd_core_file_failing_command (bfd *abfd)
240*3d8817e4Smiod {
241*3d8817e4Smiod   /*return core_command (abfd);*/
242*3d8817e4Smiod   return abfd->tdata.netbsd_core_data->core.c_name;
243*3d8817e4Smiod }
244*3d8817e4Smiod 
245*3d8817e4Smiod static int
netbsd_core_file_failing_signal(bfd * abfd)246*3d8817e4Smiod netbsd_core_file_failing_signal (bfd *abfd)
247*3d8817e4Smiod {
248*3d8817e4Smiod   /*return core_signal (abfd);*/
249*3d8817e4Smiod   return abfd->tdata.netbsd_core_data->core.c_signo;
250*3d8817e4Smiod }
251*3d8817e4Smiod 
252*3d8817e4Smiod /* If somebody calls any byte-swapping routines, shoot them.  */
253*3d8817e4Smiod 
254*3d8817e4Smiod static void
swap_abort(void)255*3d8817e4Smiod swap_abort (void)
256*3d8817e4Smiod {
257*3d8817e4Smiod  /* This way doesn't require any declaration for ANSI to fuck up.  */
258*3d8817e4Smiod   abort ();
259*3d8817e4Smiod }
260*3d8817e4Smiod 
261*3d8817e4Smiod #define	NO_GET ((bfd_vma (*) (const void *)) swap_abort)
262*3d8817e4Smiod #define	NO_PUT ((void (*) (bfd_vma, void *)) swap_abort)
263*3d8817e4Smiod #define	NO_GETS ((bfd_signed_vma (*) (const void *)) swap_abort)
264*3d8817e4Smiod #define	NO_GET64 ((bfd_uint64_t (*) (const void *)) swap_abort)
265*3d8817e4Smiod #define	NO_PUT64 ((void (*) (bfd_uint64_t, void *)) swap_abort)
266*3d8817e4Smiod #define	NO_GETS64 ((bfd_int64_t (*) (const void *)) swap_abort)
267*3d8817e4Smiod 
268*3d8817e4Smiod const bfd_target netbsd_core_vec =
269*3d8817e4Smiod   {
270*3d8817e4Smiod     "netbsd-core",
271*3d8817e4Smiod     bfd_target_unknown_flavour,
272*3d8817e4Smiod     BFD_ENDIAN_UNKNOWN,		/* Target byte order.  */
273*3d8817e4Smiod     BFD_ENDIAN_UNKNOWN,		/* Target headers byte order.  */
274*3d8817e4Smiod     (HAS_RELOC | EXEC_P |	/* Object flags.  */
275*3d8817e4Smiod      HAS_LINENO | HAS_DEBUG |
276*3d8817e4Smiod      HAS_SYMS | HAS_LOCALS | WP_TEXT | D_PAGED),
277*3d8817e4Smiod     (SEC_HAS_CONTENTS |		/* Section flags.  */
278*3d8817e4Smiod      SEC_ALLOC | SEC_LOAD | SEC_RELOC),
279*3d8817e4Smiod     0,				/* Symbol prefix.  */
280*3d8817e4Smiod     ' ',			/* ar_pad_char.  */
281*3d8817e4Smiod     16,				/* ar_max_namelen.  */
282*3d8817e4Smiod     NO_GET64, NO_GETS64, NO_PUT64,	/* 64 bit data.  */
283*3d8817e4Smiod     NO_GET, NO_GETS, NO_PUT,		/* 32 bit data.  */
284*3d8817e4Smiod     NO_GET, NO_GETS, NO_PUT,		/* 16 bit data.  */
285*3d8817e4Smiod     NO_GET64, NO_GETS64, NO_PUT64,	/* 64 bit hdrs.  */
286*3d8817e4Smiod     NO_GET, NO_GETS, NO_PUT,		/* 32 bit hdrs.  */
287*3d8817e4Smiod     NO_GET, NO_GETS, NO_PUT,		/* 16 bit hdrs.  */
288*3d8817e4Smiod 
289*3d8817e4Smiod     {					/* bfd_check_format.  */
290*3d8817e4Smiod       _bfd_dummy_target,		/* Unknown format.  */
291*3d8817e4Smiod       _bfd_dummy_target,		/* Object file.  */
292*3d8817e4Smiod       _bfd_dummy_target,		/* Archive.  */
293*3d8817e4Smiod       netbsd_core_file_p		/* A core file.  */
294*3d8817e4Smiod     },
295*3d8817e4Smiod     {					/* bfd_set_format.  */
296*3d8817e4Smiod       bfd_false, bfd_false,
297*3d8817e4Smiod       bfd_false, bfd_false
298*3d8817e4Smiod     },
299*3d8817e4Smiod     {					/* bfd_write_contents.  */
300*3d8817e4Smiod       bfd_false, bfd_false,
301*3d8817e4Smiod       bfd_false, bfd_false
302*3d8817e4Smiod     },
303*3d8817e4Smiod 
304*3d8817e4Smiod     BFD_JUMP_TABLE_GENERIC (_bfd_generic),
305*3d8817e4Smiod     BFD_JUMP_TABLE_COPY (_bfd_generic),
306*3d8817e4Smiod     BFD_JUMP_TABLE_CORE (netbsd),
307*3d8817e4Smiod     BFD_JUMP_TABLE_ARCHIVE (_bfd_noarchive),
308*3d8817e4Smiod     BFD_JUMP_TABLE_SYMBOLS (_bfd_nosymbols),
309*3d8817e4Smiod     BFD_JUMP_TABLE_RELOCS (_bfd_norelocs),
310*3d8817e4Smiod     BFD_JUMP_TABLE_WRITE (_bfd_generic),
311*3d8817e4Smiod     BFD_JUMP_TABLE_LINK (_bfd_nolink),
312*3d8817e4Smiod     BFD_JUMP_TABLE_DYNAMIC (_bfd_nodynamic),
313*3d8817e4Smiod 
314*3d8817e4Smiod     NULL,
315*3d8817e4Smiod 
316*3d8817e4Smiod     (PTR) 0			        /* Backend_data.  */
317*3d8817e4Smiod   };
318