[deliverable/binutils-gdb.git] / gdb / ppcfbsd-tdep.c

/* Target-dependent code for PowerPC systems running FreeBSD.

   Copyright (C) 2013-2014 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 3 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, see <http://www.gnu.org/licenses/>.  */

#include "defs.h"
#include "arch-utils.h"
#include "frame.h"
#include "gdbcore.h"
#include "frame-unwind.h"
#include "gdbtypes.h"
#include "osabi.h"
#include "regcache.h"
#include "regset.h"
#include "symtab.h"
#include "target.h"
#include "trad-frame.h"

#include "ppc-tdep.h"
#include "ppc64-tdep.h"
#include "ppcfbsd-tdep.h"
#include "solib-svr4.h"


/* 32-bit regset descriptions.  */

static const struct ppc_reg_offsets ppc32_fbsd_reg_offsets =
  {
	/* General-purpose registers.  */
	/* .r0_offset = */     0,
	/* .gpr_size = */      4,
	/* .xr_size = */       4,
	/* .pc_offset = */     144,
	/* .ps_offset = */     -1,
	/* .cr_offset = */     132,
	/* .lr_offset = */     128,
	/* .ctr_offset = */    140,
	/* .xer_offset = */    136,
	/* .mq_offset = */     -1,

	/* Floating-point registers.  */
	/* .f0_offset = */     0,
	/* .fpscr_offset = */  256,
	/* .fpscr_size = */    8,
#ifdef NOTYET
	/* AltiVec registers.  */
	/* .vr0_offset = */    0,
	/* .vscr_offset = */   512 + 12,
	/* .vrsave_offset = */ 512
#endif
  };

/* 64-bit regset descriptions.  */

static const struct ppc_reg_offsets ppc64_fbsd_reg_offsets =
  {
	/* General-purpose registers.  */
	/* .r0_offset = */     0,
	/* .gpr_size = */      8,
	/* .xr_size = */       8,
	/* .pc_offset = */     288,
	/* .ps_offset = */     -1,
	/* .cr_offset = */     264,
	/* .lr_offset = */     256,
	/* .ctr_offset = */    280,
	/* .xer_offset = */    272,
	/* .mq_offset = */     -1,

	/* Floating-point registers.  */
	/* .f0_offset = */     0,
	/* .fpscr_offset = */  256,
	/* .fpscr_size = */    8,
#ifdef NOYET
	/* AltiVec registers.  */
	/* .vr0_offset = */    0,
	/* .vscr_offset = */   512 + 12,
	/* .vrsave_offset = */ 528
#endif
  };

/* 32-bit general-purpose register set.  */

static const struct regset ppc32_fbsd_gregset = {
  &ppc32_fbsd_reg_offsets,
  ppc_supply_gregset,
  ppc_collect_gregset
};

/* 64-bit general-purpose register set.  */

static const struct regset ppc64_fbsd_gregset = {
  &ppc64_fbsd_reg_offsets,
  ppc_supply_gregset,
  ppc_collect_gregset
};

/* 32-/64-bit floating-point register set.  */

static const struct regset ppc32_fbsd_fpregset = {
  &ppc32_fbsd_reg_offsets,
  ppc_supply_fpregset,
  ppc_collect_fpregset
};

const struct regset *
ppc_fbsd_gregset (int wordsize)
{
  return wordsize == 8 ? &ppc64_fbsd_gregset : &ppc32_fbsd_gregset;
}

const struct regset *
ppc_fbsd_fpregset (void)
{
  return &ppc32_fbsd_fpregset;
}

/* Return the appropriate register set for the core section identified
   by SECT_NAME and SECT_SIZE.  */

static const struct regset *
ppcfbsd_regset_from_core_section (struct gdbarch *gdbarch,
				  const char *sect_name, size_t sect_size)
{
  struct gdbarch_tdep *tdep = gdbarch_tdep (gdbarch);
  if (strcmp (sect_name, ".reg") == 0 && sect_size >= 148)
    {
      if (tdep->wordsize == 4)
	return &ppc32_fbsd_gregset;
      else
	return &ppc64_fbsd_gregset;
    }
  if (strcmp (sect_name, ".reg2") == 0 && sect_size >= 264)
    return &ppc32_fbsd_fpregset;
  return NULL;
}

/* Default page size.  */

static const int ppcfbsd_page_size = 4096;

/* Offset for sigreturn(2).  */

static const int ppcfbsd_sigreturn_offset[] = {
  0xc,				/* FreeBSD 32-bit  */
  -1
};

/* Signal trampolines.  */

static int
ppcfbsd_sigtramp_frame_sniffer (const struct frame_unwind *self,
				struct frame_info *this_frame,
				void **this_cache)
{
  struct gdbarch *gdbarch = get_frame_arch (this_frame);
  enum bfd_endian byte_order = gdbarch_byte_order (gdbarch);
  CORE_ADDR pc = get_frame_pc (this_frame);
  CORE_ADDR start_pc = (pc & ~(ppcfbsd_page_size - 1));
  const int *offset;
  const char *name;

  /* A stack trampoline is detected if no name is associated
   to the current pc and if it points inside a trampoline
   sequence.  */

  find_pc_partial_function (pc, &name, NULL, NULL);

  /* If we have a name, we have no trampoline, return.  */
  if (name)
    return 0;

  for (offset = ppcfbsd_sigreturn_offset; *offset != -1; offset++)
    {
      gdb_byte buf[2 * PPC_INSN_SIZE];
      unsigned long insn;

      if (!safe_frame_unwind_memory (this_frame, start_pc + *offset,
				     buf, sizeof buf))
	continue;

      /* Check for "li r0,SYS_sigreturn".  */
      insn = extract_unsigned_integer (buf, PPC_INSN_SIZE, byte_order);
      if (insn != 0x380001a1)
	continue;

      /* Check for "sc".  */
      insn = extract_unsigned_integer (buf + PPC_INSN_SIZE,
				       PPC_INSN_SIZE, byte_order);
      if (insn != 0x44000002)
	continue;

      return 1;
    }

  return 0;
}

static struct trad_frame_cache *
ppcfbsd_sigtramp_frame_cache (struct frame_info *this_frame, void **this_cache)
{
  struct gdbarch *gdbarch = get_frame_arch (this_frame);
  struct gdbarch_tdep *tdep = gdbarch_tdep (gdbarch);
  enum bfd_endian byte_order = gdbarch_byte_order (gdbarch);
  struct trad_frame_cache *cache;
  CORE_ADDR addr, base, func;
  gdb_byte buf[PPC_INSN_SIZE];
  int i;

  if (*this_cache)
    return *this_cache;

  cache = trad_frame_cache_zalloc (this_frame);
  *this_cache = cache;

  func = get_frame_pc (this_frame);
  func &= ~(ppcfbsd_page_size - 1);
  if (!safe_frame_unwind_memory (this_frame, func, buf, sizeof buf))
    return cache;

  base = get_frame_register_unsigned (this_frame, gdbarch_sp_regnum (gdbarch));
  addr = base + 0x10 + 2 * tdep->wordsize;
  for (i = 0; i < ppc_num_gprs; i++, addr += tdep->wordsize)
    {
      int regnum = i + tdep->ppc_gp0_regnum;
      trad_frame_set_reg_addr (cache, regnum, addr);
    }
  trad_frame_set_reg_addr (cache, tdep->ppc_lr_regnum, addr);
  addr += tdep->wordsize;
  trad_frame_set_reg_addr (cache, tdep->ppc_cr_regnum, addr);
  addr += tdep->wordsize;
  trad_frame_set_reg_addr (cache, tdep->ppc_xer_regnum, addr);
  addr += tdep->wordsize;
  trad_frame_set_reg_addr (cache, tdep->ppc_ctr_regnum, addr);
  addr += tdep->wordsize;
  trad_frame_set_reg_addr (cache, gdbarch_pc_regnum (gdbarch), addr);
  /* SRR0?  */
  addr += tdep->wordsize;

  /* Construct the frame ID using the function start.  */
  trad_frame_set_id (cache, frame_id_build (base, func));

  return cache;
}

static void
ppcfbsd_sigtramp_frame_this_id (struct frame_info *this_frame,
				void **this_cache, struct frame_id *this_id)
{
  struct trad_frame_cache *cache =
    ppcfbsd_sigtramp_frame_cache (this_frame, this_cache);

  trad_frame_get_id (cache, this_id);
}

static struct value *
ppcfbsd_sigtramp_frame_prev_register (struct frame_info *this_frame,
				      void **this_cache, int regnum)
{
  struct trad_frame_cache *cache =
    ppcfbsd_sigtramp_frame_cache (this_frame, this_cache);

  return trad_frame_get_register (cache, this_frame, regnum);
}

static const struct frame_unwind ppcfbsd_sigtramp_frame_unwind = {
  SIGTRAMP_FRAME,
  default_frame_unwind_stop_reason,
  ppcfbsd_sigtramp_frame_this_id,
  ppcfbsd_sigtramp_frame_prev_register,
  NULL,
  ppcfbsd_sigtramp_frame_sniffer
};

static enum return_value_convention
ppcfbsd_return_value (struct gdbarch *gdbarch, struct value *function,
		      struct type *valtype, struct regcache *regcache,
		      gdb_byte *readbuf, const gdb_byte *writebuf)
{
  return ppc_sysv_abi_broken_return_value (gdbarch, function, valtype,
					   regcache, readbuf, writebuf);
}


static void
ppcfbsd_init_abi (struct gdbarch_info info, struct gdbarch *gdbarch)
{
  struct gdbarch_tdep *tdep = gdbarch_tdep (gdbarch);

  /* FreeBSD doesn't support the 128-bit `long double' from the psABI.  */
  set_gdbarch_long_double_bit (gdbarch, 64);
  set_gdbarch_long_double_format (gdbarch, floatformats_ieee_double);

  if (tdep->wordsize == 4)
    {
      set_gdbarch_return_value (gdbarch, ppcfbsd_return_value);

      set_gdbarch_skip_trampoline_code (gdbarch, find_solib_trampoline_target);
      set_solib_svr4_fetch_link_map_offsets (gdbarch,
					     svr4_ilp32_fetch_link_map_offsets);

      frame_unwind_append_unwinder (gdbarch, &ppcfbsd_sigtramp_frame_unwind);
      set_gdbarch_gcore_bfd_target (gdbarch, "elf32-powerpc");
    }

  if (tdep->wordsize == 8)
    {
      set_gdbarch_convert_from_func_ptr_addr
	(gdbarch, ppc64_convert_from_func_ptr_addr);
      set_gdbarch_elf_make_msymbol_special (gdbarch,
					    ppc64_elf_make_msymbol_special);

      set_gdbarch_skip_trampoline_code (gdbarch, ppc64_skip_trampoline_code);
      set_solib_svr4_fetch_link_map_offsets (gdbarch,
					     svr4_lp64_fetch_link_map_offsets);
      set_gdbarch_gcore_bfd_target (gdbarch, "elf64-powerpc");
    }

  set_gdbarch_regset_from_core_section
    (gdbarch, ppcfbsd_regset_from_core_section);

  set_gdbarch_fetch_tls_load_module_address (gdbarch,
					     svr4_fetch_objfile_link_map);
}

/* Provide a prototype to silence -Wmissing-prototypes.  */

void _initialize_ppcfbsd_tdep (void);

void
_initialize_ppcfbsd_tdep (void)
{
  gdbarch_register_osabi (bfd_arch_powerpc, bfd_mach_ppc, GDB_OSABI_FREEBSD_ELF,
			  ppcfbsd_init_abi);
  gdbarch_register_osabi (bfd_arch_powerpc, bfd_mach_ppc64,
			  GDB_OSABI_FREEBSD_ELF,
			  ppcfbsd_init_abi);
  gdbarch_register_osabi (bfd_arch_rs6000, 0, GDB_OSABI_FREEBSD_ELF,
			  ppcfbsd_init_abi);
}
Commit	Line	Data
dc18f110 AT	1	/* Target-dependent code for PowerPC systems running FreeBSD.
dc18f110 AT	2
ecd75fc8	3	Copyright (C) 2013-2014 Free Software Foundation, Inc.
dc18f110 AT	4
	5	This file is part of GDB.
	6
	7	This program is free software; you can redistribute it and/or modify
	8	it under the terms of the GNU General Public License as published by
	9	the Free Software Foundation; either version 3 of the License, or
	10	(at your option) any later version.
	11
	12	This program is distributed in the hope that it will be useful,
	13	but WITHOUT ANY WARRANTY; without even the implied warranty of
	14	MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
	15	GNU General Public License for more details.
	16
	17	You should have received a copy of the GNU General Public License
	18	along with this program. If not, see <http://www.gnu.org/licenses/>. */
	19
	20	#include "defs.h"
	21	#include "arch-utils.h"
	22	#include "frame.h"
	23	#include "gdbcore.h"
	24	#include "frame-unwind.h"
	25	#include "gdbtypes.h"
	26	#include "osabi.h"
	27	#include "regcache.h"
	28	#include "regset.h"
	29	#include "symtab.h"
	30	#include "target.h"
	31	#include "trad-frame.h"
	32
dc18f110 AT	33	#include "ppc-tdep.h"
	34	#include "ppc64-tdep.h"
	35	#include "ppcfbsd-tdep.h"
	36	#include "solib-svr4.h"
	37
	38
	39	/* 32-bit regset descriptions. */
	40
	41	static const struct ppc_reg_offsets ppc32_fbsd_reg_offsets =
	42	{
	43	/* General-purpose registers. */
	44	/* .r0_offset = */ 0,
	45	/* .gpr_size = */ 4,
	46	/* .xr_size = */ 4,
	47	/* .pc_offset = */ 144,
	48	/* .ps_offset = */ -1,
	49	/* .cr_offset = */ 132,
	50	/* .lr_offset = */ 128,
	51	/* .ctr_offset = */ 140,
	52	/* .xer_offset = */ 136,
	53	/* .mq_offset = */ -1,
	54
	55	/* Floating-point registers. */
	56	/* .f0_offset = */ 0,
	57	/* .fpscr_offset = */ 256,
	58	/* .fpscr_size = */ 8,
	59	#ifdef NOTYET
	60	/* AltiVec registers. */
	61	/* .vr0_offset = */ 0,
	62	/* .vscr_offset = */ 512 + 12,
	63	/* .vrsave_offset = */ 512
	64	#endif
	65	};
	66
	67	/* 64-bit regset descriptions. */
	68
	69	static const struct ppc_reg_offsets ppc64_fbsd_reg_offsets =
	70	{
	71	/* General-purpose registers. */
	72	/* .r0_offset = */ 0,
	73	/* .gpr_size = */ 8,
	74	/* .xr_size = */ 8,
	75	/* .pc_offset = */ 288,
	76	/* .ps_offset = */ -1,
	77	/* .cr_offset = */ 264,
	78	/* .lr_offset = */ 256,
	79	/* .ctr_offset = */ 280,
	80	/* .xer_offset = */ 272,
	81	/* .mq_offset = */ -1,
	82
	83	/* Floating-point registers. */
	84	/* .f0_offset = */ 0,
	85	/* .fpscr_offset = */ 256,
	86	/* .fpscr_size = */ 8,
	87	#ifdef NOYET
	88	/* AltiVec registers. */
	89	/* .vr0_offset = */ 0,
	90	/* .vscr_offset = */ 512 + 12,
	91	/* .vrsave_offset = */ 528
	92	#endif
	93	};
	94
	95	/* 32-bit general-purpose register set. */
	96
97	static const struct regset ppc32_fbsd_gregset = {
98	&ppc32_fbsd_reg_offsets,
99	ppc_supply_gregset,
09424cff	100	ppc_collect_gregset
dc18f110 AT	101	};
	102
	103	/* 64-bit general-purpose register set. */
	104
	105	static const struct regset ppc64_fbsd_gregset = {
	106	&ppc64_fbsd_reg_offsets,
	107	ppc_supply_gregset,
09424cff	108	ppc_collect_gregset
dc18f110 AT	109	};
	110
	111	/* 32-/64-bit floating-point register set. */
	112
3ca7dae4	113	static const struct regset ppc32_fbsd_fpregset = {
dc18f110 AT	114	&ppc32_fbsd_reg_offsets,
	115	ppc_supply_fpregset,
	116	ppc_collect_fpregset
	117	};
	118
	119	const struct regset *
	120	ppc_fbsd_gregset (int wordsize)
	121	{
	122	return wordsize == 8 ? &ppc64_fbsd_gregset : &ppc32_fbsd_gregset;
	123	}
	124
	125	const struct regset *
	126	ppc_fbsd_fpregset (void)
	127	{
	128	return &ppc32_fbsd_fpregset;
	129	}
	130
	131	/* Return the appropriate register set for the core section identified
	132	by SECT_NAME and SECT_SIZE. */
	133
	134	static const struct regset *
	135	ppcfbsd_regset_from_core_section (struct gdbarch *gdbarch,
	136	const char *sect_name, size_t sect_size)
	137	{
	138	struct gdbarch_tdep *tdep = gdbarch_tdep (gdbarch);
	139	if (strcmp (sect_name, ".reg") == 0 && sect_size >= 148)
	140	{
	141	if (tdep->wordsize == 4)
	142	return &ppc32_fbsd_gregset;
	143	else
	144	return &ppc64_fbsd_gregset;
	145	}
	146	if (strcmp (sect_name, ".reg2") == 0 && sect_size >= 264)
	147	return &ppc32_fbsd_fpregset;
	148	return NULL;
	149	}
	150
	151	/* Default page size. */
	152
	153	static const int ppcfbsd_page_size = 4096;
	154
	155	/* Offset for sigreturn(2). */
	156
	157	static const int ppcfbsd_sigreturn_offset[] = {
	158	0xc, /* FreeBSD 32-bit */
	159	-1
	160	};
	161
	162	/* Signal trampolines. */
	163
	164	static int
	165	ppcfbsd_sigtramp_frame_sniffer (const struct frame_unwind *self,
	166	struct frame_info *this_frame,
	167	void **this_cache)
	168	{
	169	struct gdbarch *gdbarch = get_frame_arch (this_frame);
	170	enum bfd_endian byte_order = gdbarch_byte_order (gdbarch);
	171	CORE_ADDR pc = get_frame_pc (this_frame);
	172	CORE_ADDR start_pc = (pc & ~(ppcfbsd_page_size - 1));
	173	const int *offset;
	174	const char *name;
	175
	176	/* A stack trampoline is detected if no name is associated
	177	to the current pc and if it points inside a trampoline
178	sequence. */
179
180	find_pc_partial_function (pc, &name, NULL, NULL);
181
182	/* If we have a name, we have no trampoline, return. */
183	if (name)
184	return 0;
185
186	for (offset = ppcfbsd_sigreturn_offset; *offset != -1; offset++)
187	{
188	gdb_byte buf[2 * PPC_INSN_SIZE];
189	unsigned long insn;
190
191	if (!safe_frame_unwind_memory (this_frame, start_pc + *offset,
192	buf, sizeof buf))
193	continue;
194
195	/* Check for "li r0,SYS_sigreturn". */
196	insn = extract_unsigned_integer (buf, PPC_INSN_SIZE, byte_order);
197	if (insn != 0x380001a1)
198	continue;
199
200	/* Check for "sc". */
201	insn = extract_unsigned_integer (buf + PPC_INSN_SIZE,
202	PPC_INSN_SIZE, byte_order);
203	if (insn != 0x44000002)
204	continue;
205
206	return 1;
207	}
208
209	return 0;
210	}
211
212	static struct trad_frame_cache *
213	ppcfbsd_sigtramp_frame_cache (struct frame_info this_frame, void *this_cache)
214	{
215	struct gdbarch *gdbarch = get_frame_arch (this_frame);
216	struct gdbarch_tdep *tdep = gdbarch_tdep (gdbarch);
217	enum bfd_endian byte_order = gdbarch_byte_order (gdbarch);
218	struct trad_frame_cache *cache;
219	CORE_ADDR addr, base, func;
220	gdb_byte buf[PPC_INSN_SIZE];
221	int i;
222
223	if (*this_cache)
224	return *this_cache;
225
226	cache = trad_frame_cache_zalloc (this_frame);
227	*this_cache = cache;
228
229	func = get_frame_pc (this_frame);
230	func &= ~(ppcfbsd_page_size - 1);
231	if (!safe_frame_unwind_memory (this_frame, func, buf, sizeof buf))
232	return cache;
233
234	base = get_frame_register_unsigned (this_frame, gdbarch_sp_regnum (gdbarch));
235	addr = base + 0x10 + 2 * tdep->wordsize;
236	for (i = 0; i < ppc_num_gprs; i++, addr += tdep->wordsize)
237	{
238	int regnum = i + tdep->ppc_gp0_regnum;
239	trad_frame_set_reg_addr (cache, regnum, addr);
240	}
241	trad_frame_set_reg_addr (cache, tdep->ppc_lr_regnum, addr);
242	addr += tdep->wordsize;
243	trad_frame_set_reg_addr (cache, tdep->ppc_cr_regnum, addr);
244	addr += tdep->wordsize;
245	trad_frame_set_reg_addr (cache, tdep->ppc_xer_regnum, addr);
246	addr += tdep->wordsize;
247	trad_frame_set_reg_addr (cache, tdep->ppc_ctr_regnum, addr);
248	addr += tdep->wordsize;
249	trad_frame_set_reg_addr (cache, gdbarch_pc_regnum (gdbarch), addr);
250	/* SRR0? */
251	addr += tdep->wordsize;
252
253	/* Construct the frame ID using the function start. */
254	trad_frame_set_id (cache, frame_id_build (base, func));
255
256	return cache;
257	}
258
259	static void
260	ppcfbsd_sigtramp_frame_this_id (struct frame_info *this_frame,
261	void *this_cache, struct frame_id this_id)
262	{
263	struct trad_frame_cache *cache =
264	ppcfbsd_sigtramp_frame_cache (this_frame, this_cache);
265
266	trad_frame_get_id (cache, this_id);
267	}
268
269	static struct value *
270	ppcfbsd_sigtramp_frame_prev_register (struct frame_info *this_frame,
271	void **this_cache, int regnum)
272	{
273	struct trad_frame_cache *cache =
274	ppcfbsd_sigtramp_frame_cache (this_frame, this_cache);
275
276	return trad_frame_get_register (cache, this_frame, regnum);
277	}
278
279	static const struct frame_unwind ppcfbsd_sigtramp_frame_unwind = {
280	SIGTRAMP_FRAME,
281	default_frame_unwind_stop_reason,
282	ppcfbsd_sigtramp_frame_this_id,
283	ppcfbsd_sigtramp_frame_prev_register,
284	NULL,
285	ppcfbsd_sigtramp_frame_sniffer
286	};
287
288	static enum return_value_convention
289	ppcfbsd_return_value (struct gdbarch gdbarch, struct value function,
290	struct type valtype, struct regcache regcache,
291	gdb_byte readbuf, const gdb_byte writebuf)
292	{
293	return ppc_sysv_abi_broken_return_value (gdbarch, function, valtype,
294	regcache, readbuf, writebuf);
295	}
296
297
298	static void
299	ppcfbsd_init_abi (struct gdbarch_info info, struct gdbarch *gdbarch)
300	{
301	struct gdbarch_tdep *tdep = gdbarch_tdep (gdbarch);
302
303	/* FreeBSD doesn't support the 128-bit `long double' from the psABI. */
304	set_gdbarch_long_double_bit (gdbarch, 64);
305	set_gdbarch_long_double_format (gdbarch, floatformats_ieee_double);
306
307	if (tdep->wordsize == 4)
308	{
309	set_gdbarch_return_value (gdbarch, ppcfbsd_return_value);
310
311	set_gdbarch_skip_trampoline_code (gdbarch, find_solib_trampoline_target);
312	set_solib_svr4_fetch_link_map_offsets (gdbarch,
313	svr4_ilp32_fetch_link_map_offsets);
314
315	frame_unwind_append_unwinder (gdbarch, &ppcfbsd_sigtramp_frame_unwind);
316	set_gdbarch_gcore_bfd_target (gdbarch, "elf32-powerpc");
317	}
318
319	if (tdep->wordsize == 8)
320	{
321	set_gdbarch_convert_from_func_ptr_addr
322	(gdbarch, ppc64_convert_from_func_ptr_addr);
24c274a1 AM	323	set_gdbarch_elf_make_msymbol_special (gdbarch,
	324	ppc64_elf_make_msymbol_special);
	325
dc18f110 AT	326	set_gdbarch_skip_trampoline_code (gdbarch, ppc64_skip_trampoline_code);
	327	set_solib_svr4_fetch_link_map_offsets (gdbarch,
	328	svr4_lp64_fetch_link_map_offsets);
	329	set_gdbarch_gcore_bfd_target (gdbarch, "elf64-powerpc");
	330	}
	331
	332	set_gdbarch_regset_from_core_section
	333	(gdbarch, ppcfbsd_regset_from_core_section);
	334
	335	set_gdbarch_fetch_tls_load_module_address (gdbarch,
	336	svr4_fetch_objfile_link_map);
	337	}
	338
	339	/* Provide a prototype to silence -Wmissing-prototypes. */
	340
	341	void _initialize_ppcfbsd_tdep (void);
	342
	343	void
	344	_initialize_ppcfbsd_tdep (void)
	345	{
	346	gdbarch_register_osabi (bfd_arch_powerpc, bfd_mach_ppc, GDB_OSABI_FREEBSD_ELF,
	347	ppcfbsd_init_abi);
	348	gdbarch_register_osabi (bfd_arch_powerpc, bfd_mach_ppc64,
	349	GDB_OSABI_FREEBSD_ELF,
	350	ppcfbsd_init_abi);
	351	gdbarch_register_osabi (bfd_arch_rs6000, 0, GDB_OSABI_FREEBSD_ELF,
	352	ppcfbsd_init_abi);
	353	}