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

/* Target-dependent code for SPARC systems running NetBSD.
   Copyright 2002, 2003 Free Software Foundation, Inc.
   Contributed by Wasabi Systems, 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 "gdbcore.h"
#include "regcache.h"
#include "target.h"
#include "value.h"
#include "osabi.h"

#include "gdb_string.h"

#include "sparcnbsd-tdep.h"
#include "nbsd-tdep.h"

#include "solib-svr4.h"

#define REG32_OFFSET_PSR	(0 * 4)
#define REG32_OFFSET_PC		(1 * 4)
#define REG32_OFFSET_NPC	(2 * 4)
#define REG32_OFFSET_Y		(3 * 4)
#define REG32_OFFSET_GLOBAL	(4 * 4)
#define REG32_OFFSET_OUT	(12 * 4)

#define REG64_OFFSET_TSTATE	(0 * 8)
#define REG64_OFFSET_PC		(1 * 8)
#define REG64_OFFSET_NPC	(2 * 8)
#define REG64_OFFSET_Y		(3 * 8)
#define REG64_OFFSET_GLOBAL	(4 * 8)
#define REG64_OFFSET_OUT	(12 * 8)

void
sparcnbsd_supply_reg32 (char *regs, int regno)
{
  int i;

  if (regno == PS_REGNUM || regno == -1)
    supply_register (PS_REGNUM, regs + REG32_OFFSET_PSR);

  if (regno == PC_REGNUM || regno == -1)
    supply_register (PC_REGNUM, regs + REG32_OFFSET_PC);

  if (regno == NPC_REGNUM || regno == -1)
    supply_register (NPC_REGNUM, regs + REG32_OFFSET_NPC);

  if (regno == Y_REGNUM || regno == -1)
    supply_register (Y_REGNUM, regs + REG32_OFFSET_Y);

  if ((regno >= G0_REGNUM && regno <= G7_REGNUM) || regno == -1)
    {
      if (regno == G0_REGNUM || regno == -1)
	supply_register (G0_REGNUM, NULL);	/* %g0 is always zero */
      for (i = G1_REGNUM; i <= G7_REGNUM; i++)
	{
	  if (regno == i || regno == -1)
	    supply_register (i, regs + REG32_OFFSET_GLOBAL +
	                     ((i - G0_REGNUM) * 4));
	}
    }

  if ((regno >= O0_REGNUM && regno <= O7_REGNUM) || regno == -1)
    {
      for (i = O0_REGNUM; i <= O7_REGNUM; i++)
	{
	  if (regno == i || regno == -1)
	    supply_register (i, regs + REG32_OFFSET_OUT +
			     ((i - O0_REGNUM) * 4));
        }
    }

  /* Inputs and Locals are stored onto the stack by by the kernel.  */
  if ((regno >= L0_REGNUM && regno <= I7_REGNUM) || regno == -1)
    {
      CORE_ADDR sp = read_register (SP_REGNUM);
      char buf[4];

      for (i = L0_REGNUM; i <= I7_REGNUM; i++)
	{
	  if (regno == i || regno == -1)
	    {
              target_read_memory (sp + ((i - L0_REGNUM) * 4),
                                  buf, sizeof (buf));
	      supply_register (i, buf);
	    }
	}
    }

  /* FIXME: If we don't set these valid, read_register_bytes() rereads
     all the regs every time it is called!  */
  if (regno == WIM_REGNUM || regno == -1)
    supply_register (WIM_REGNUM, NULL);
  if (regno == TBR_REGNUM || regno == -1)
    supply_register (TBR_REGNUM, NULL);
  if (regno == CPS_REGNUM || regno == -1)
    supply_register (CPS_REGNUM, NULL);
}

void
sparcnbsd_supply_reg64 (char *regs, int regno)
{
  int i;
  char buf[8];

  if (regno == TSTATE_REGNUM || regno == -1)
    supply_register (PS_REGNUM, regs + REG64_OFFSET_TSTATE);

  if (regno == PC_REGNUM || regno == -1)
    supply_register (PC_REGNUM, regs + REG64_OFFSET_PC);

  if (regno == NPC_REGNUM || regno == -1)
    supply_register (NPC_REGNUM, regs + REG64_OFFSET_NPC);

  if (regno == Y_REGNUM || regno == -1)
    {
      memset (buf, 0, sizeof (buf));
      memcpy (&buf[4], regs + REG64_OFFSET_Y, 4);
      supply_register (Y_REGNUM, buf);
    }

  if ((regno >= G0_REGNUM && regno <= G7_REGNUM) || regno == -1)
    {
      if (regno == G0_REGNUM || regno == -1)
	supply_register (G0_REGNUM, NULL);	/* %g0 is always zero */
      for (i = G1_REGNUM; i <= G7_REGNUM; i++)
	{
	  if (regno == i || regno == -1)
	    supply_register (i, regs + REG64_OFFSET_GLOBAL +
	                     ((i - G0_REGNUM) * 8));
	}
    }

  if ((regno >= O0_REGNUM && regno <= O7_REGNUM) || regno == -1)
    {
      for (i = O0_REGNUM; i <= O7_REGNUM; i++)
	{
	  if (regno == i || regno == -1)
	    supply_register (i, regs + REG64_OFFSET_OUT +
			     ((i - O0_REGNUM) * 8));
        }
    }

  /* Inputs and Locals are stored onto the stack by by the kernel.  */
  if ((regno >= L0_REGNUM && regno <= I7_REGNUM) || regno == -1)
    {
      CORE_ADDR sp = read_register (SP_REGNUM);
      char buf[8];

      if (sp & 1)
	{
	  /* Registers are 64-bit.  */
	  sp += 2047;

	  for (i = L0_REGNUM; i <= I7_REGNUM; i++)
	    {
	      if (regno == i || regno == -1)
	        {
                  target_read_memory (sp + ((i - L0_REGNUM) * 8),
                                      buf, sizeof (buf));
	          supply_register (i, buf);
		}
	    }
	}
      else
	{
	  /* Registers are 32-bit.  Toss any sign-extension of the stack
	     pointer, clear out the top half of the temporary buffer, and
	     put the register value in the bottom half.  */

	  sp &= 0xffffffffUL;
	  memset (buf, 0, sizeof (buf));
	  for (i = L0_REGNUM; i <= I7_REGNUM; i++)
	    {
	      if (regno == i || regno == -1)
		{
		  target_read_memory (sp + ((i - L0_REGNUM) * 4),
				      &buf[4], sizeof (buf));
                  supply_register (i, buf);
		}
	    }
	}
    }

  /* FIXME: If we don't set these valid, read_register_bytes() rereads
     all the regs every time it is called!  */
  if (regno == WIM_REGNUM || regno == -1)
    supply_register (WIM_REGNUM, NULL);
  if (regno == TBR_REGNUM || regno == -1)
    supply_register (TBR_REGNUM, NULL);
  if (regno == CPS_REGNUM || regno == -1)
    supply_register (CPS_REGNUM, NULL);
}

void
sparcnbsd_fill_reg32 (char *regs, int regno)
{
  int i;

  if (regno == PS_REGNUM || regno == -1)
    regcache_collect (PS_REGNUM, regs + REG32_OFFSET_PSR);

  if (regno == PC_REGNUM || regno == -1)
    regcache_collect (PC_REGNUM, regs + REG32_OFFSET_PC);

  if (regno == NPC_REGNUM || regno == -1)
    regcache_collect (NPC_REGNUM, regs + REG32_OFFSET_NPC);

  if (regno == Y_REGNUM || regno == -1)
    regcache_collect (Y_REGNUM, regs + REG32_OFFSET_Y);

  if ((regno >= G0_REGNUM && regno <= G7_REGNUM) || regno == -1)
    {
      /* %g0 is always zero */
      for (i = G1_REGNUM; i <= G7_REGNUM; i++)
	{
	  if (regno == i || regno == -1)
	    regcache_collect (i, regs + REG32_OFFSET_GLOBAL +
	                      ((i - G0_REGNUM) * 4));
	}
    }

  if ((regno >= O0_REGNUM && regno <= O7_REGNUM) || regno == -1)
    {
      for (i = O0_REGNUM; i <= O7_REGNUM; i++)
	{
	  if (regno == i || regno == -1)
	    regcache_collect (i, regs + REG32_OFFSET_OUT +
			      ((i - O0_REGNUM) * 4));
        }
    }

  /* Responsibility for the stack regs is pushed off onto the caller.  */
}

void
sparcnbsd_fill_reg64 (char *regs, int regno)
{
  int i;

  if (regno == TSTATE_REGNUM || regno == -1)
    regcache_collect (TSTATE_REGNUM, regs + REG64_OFFSET_TSTATE);

  if (regno == PC_REGNUM || regno == -1)
    regcache_collect (PC_REGNUM, regs + REG64_OFFSET_PC);

  if (regno == NPC_REGNUM || regno == -1)
    regcache_collect (NPC_REGNUM, regs + REG64_OFFSET_NPC);

  if (regno == Y_REGNUM || regno == -1)
    regcache_collect (Y_REGNUM, regs + REG64_OFFSET_Y);

  if ((regno >= G0_REGNUM && regno <= G7_REGNUM) || regno == -1)
    {
      /* %g0 is always zero */
      for (i = G1_REGNUM; i <= G7_REGNUM; i++)
	{
	  if (regno == i || regno == -1)
	    regcache_collect (i, regs + REG64_OFFSET_GLOBAL +
	                      ((i - G0_REGNUM) * 4));
	}
    }

  if ((regno >= O0_REGNUM && regno <= O7_REGNUM) || regno == -1)
    {
      for (i = O0_REGNUM; i <= O7_REGNUM; i++)
	{
	  if (regno == i || regno == -1)
	    regcache_collect (i, regs + REG64_OFFSET_OUT +
			      ((i - O0_REGNUM) * 4));
        }
    }

  /* Responsibility for the stack regs is pushed off onto the caller.  */
}

void
sparcnbsd_supply_fpreg32 (char *fpregs, int regno)
{
  int i;

  for (i = 0; i <= 31; i++)
    {
      if (regno == (FP0_REGNUM + i) || regno == -1)
	supply_register (FP0_REGNUM + i, fpregs + (i * 4));
    }

  if (regno == FPS_REGNUM || regno == -1)
    supply_register (FPS_REGNUM, fpregs + (32 * 4));
}

void
sparcnbsd_supply_fpreg64 (char *fpregs, int regno)
{
  int i;

  for (i = 0; i <= 31; i++)
    {
      if (regno == (FP0_REGNUM + i) || regno == -1)
	supply_register (FP0_REGNUM + i, fpregs + (i * 4));
    }

  for (; i <= 47; i++)
    {
      if (regno == (FP0_REGNUM + i) || regno == -1)
	supply_register (FP0_REGNUM + i, fpregs + (32 * 4) + (i * 8));
    }

  if (regno == FPS_REGNUM || regno == -1)
    supply_register (FPS_REGNUM, fpregs + (32 * 4) + (16 * 8));

  /* XXX %gsr */
}

void
sparcnbsd_fill_fpreg32 (char *fpregs, int regno)
{
  int i;

  for (i = 0; i <= 31; i++)
    {
      if (regno == (FP0_REGNUM + i) || regno == -1)
	regcache_collect (FP0_REGNUM + i, fpregs + (i * 4));
    }

  if (regno == FPS_REGNUM || regno == -1)
    regcache_collect (FPS_REGNUM, fpregs + (32 * 4));
}

void
sparcnbsd_fill_fpreg64 (char *fpregs, int regno)
{
  int i;

  for (i = 0; i <= 31; i++)
    {
      if (regno == (FP0_REGNUM + i) || regno == -1)
	regcache_collect (FP0_REGNUM + i, fpregs + (i * 4));
    }

  for (; i <= 47; i++)
    {
      if (regno == (FP0_REGNUM + i) || regno == -1)
	regcache_collect (FP0_REGNUM + i, fpregs + (32 * 4) + (i * 8));
    }

  if (regno == FPS_REGNUM || regno == -1)
    regcache_collect (FPS_REGNUM, fpregs + (32 * 4) + (16 * 8));

  /* XXX %gsr */
}

/* Unlike other NetBSD implementations, the SPARC port historically used
   .reg and .reg2 (see bfd/netbsd-core.c), and as such, we can share one
   routine for a.out and ELF core files.  */
static void
fetch_core_registers (char *core_reg_sect, unsigned core_reg_size, int which,
                      CORE_ADDR ignore)
{
  int reg_size, fpreg_size;

  if (gdbarch_ptr_bit (current_gdbarch) == 32)
    {
      reg_size = (20 * 4);
      fpreg_size = (33 * 4);
    }
  else
    {
      reg_size = (20 * 8);
      fpreg_size = (64 * 4)
        + 8  /* fsr */
        + 4  /* gsr */
        + 4; /* pad */
    }

  switch (which)
    {
    case 0:  /* Integer registers */
      if (core_reg_size != reg_size)
	warning ("Wrong size register set in core file.");
      else if (gdbarch_ptr_bit (current_gdbarch) == 32)
	sparcnbsd_supply_reg32 (core_reg_sect, -1);
      else
	sparcnbsd_supply_reg64 (core_reg_sect, -1);
      break;

    case 2:  /* Floating pointer registers */
      if (core_reg_size != fpreg_size)
	warning ("Wrong size FP register set in core file.");
      else if (gdbarch_ptr_bit (current_gdbarch) == 32)
	sparcnbsd_supply_fpreg32 (core_reg_sect, -1);
      else
	sparcnbsd_supply_fpreg64 (core_reg_sect, -1);
      break;

    default:
      /* Don't know what kind of register request this is; just ignore it.  */
      break;
    }
}

static struct core_fns sparcnbsd_core_fns =
{
  bfd_target_unknown_flavour,		/* core_flavour */
  default_check_format,			/* check_format */
  default_core_sniffer,			/* core_sniffer */
  fetch_core_registers,			/* core_read_registers */
  NULL
};

static struct core_fns sparcnbsd_elfcore_fns =
{
  bfd_target_elf_flavour,		/* core_flavour */
  default_check_format,			/* check_format */
  default_core_sniffer,			/* core_sniffer */
  fetch_core_registers,			/* core_read_registers */
  NULL
};

/* FIXME: Need PC_IN_SIGTRAMP() support, but NetBSD/sparc signal trampolines
   aren't easily identified.  */

static int
sparcnbsd_get_longjmp_target_32 (CORE_ADDR *pc)
{
  CORE_ADDR jb_addr;
  char buf[4];

  jb_addr = read_register (O0_REGNUM);

  if (target_read_memory (jb_addr + 12, buf, sizeof (buf)))
    return 0;

  *pc = extract_address (buf, sizeof (buf));

  return 1;
}

static int
sparcnbsd_get_longjmp_target_64 (CORE_ADDR *pc)
{
  CORE_ADDR jb_addr;
  char buf[8];

  jb_addr = read_register (O0_REGNUM);

  if (target_read_memory (jb_addr + 16, buf, sizeof (buf)))
    return 0;

  *pc = extract_address (buf, sizeof (buf));

  return 1;
}

static int
sparcnbsd_aout_in_solib_call_trampoline (CORE_ADDR pc, char *name)
{
  if (strcmp (name, "_DYNAMIC") == 0)
    return 1;

  return 0;
}

static void
sparcnbsd_init_abi_common (struct gdbarch_info info,
                           struct gdbarch *gdbarch)
{
  set_gdbarch_get_longjmp_target (gdbarch, gdbarch_ptr_bit (gdbarch) == 32 ?
	                                   sparcnbsd_get_longjmp_target_32 :
	                                   sparcnbsd_get_longjmp_target_64);
}

static void
sparcnbsd_init_abi_aout (struct gdbarch_info info,
                         struct gdbarch *gdbarch)
{
  sparcnbsd_init_abi_common (info, gdbarch);

  set_gdbarch_in_solib_call_trampoline (gdbarch,
                                     sparcnbsd_aout_in_solib_call_trampoline);
}

static void
sparcnbsd_init_abi_elf (struct gdbarch_info info,
                        struct gdbarch *gdbarch)
{
  sparcnbsd_init_abi_common (info, gdbarch);

  set_gdbarch_pc_in_sigtramp (gdbarch, nbsd_pc_in_sigtramp);

  set_solib_svr4_fetch_link_map_offsets (gdbarch,
				         gdbarch_ptr_bit (gdbarch) == 32 ?
                                nbsd_ilp32_solib_svr4_fetch_link_map_offsets :
				nbsd_lp64_solib_svr4_fetch_link_map_offsets);
}

static enum gdb_osabi
sparcnbsd_aout_osabi_sniffer (bfd *abfd)
{
  if (strcmp (bfd_get_target (abfd), "a.out-sparc-netbsd") == 0)
    return GDB_OSABI_NETBSD_AOUT;

  return GDB_OSABI_UNKNOWN;
}

void
_initialize_sparnbsd_tdep (void)
{
  gdbarch_register_osabi_sniffer (bfd_arch_sparc, bfd_target_aout_flavour,
				  sparcnbsd_aout_osabi_sniffer);

  gdbarch_register_osabi (bfd_arch_sparc, 0, GDB_OSABI_NETBSD_AOUT,
			  sparcnbsd_init_abi_aout);
  gdbarch_register_osabi (bfd_arch_sparc, 0, GDB_OSABI_NETBSD_ELF,
			  sparcnbsd_init_abi_elf);

  add_core_fns (&sparcnbsd_core_fns);
  add_core_fns (&sparcnbsd_elfcore_fns);
}
Commit	Line	Data
9ce5c36a	1	/* Target-dependent code for SPARC systems running NetBSD.
f6ad61e3	2	Copyright 2002, 2003 Free Software Foundation, Inc.
9ce5c36a JT	3	Contributed by Wasabi Systems, Inc.
	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 2 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, write to the Free Software
	19	Foundation, Inc., 59 Temple Place - Suite 330,
	20	Boston, MA 02111-1307, USA. */
	21
	22	#include "defs.h"
	23	#include "gdbcore.h"
	24	#include "regcache.h"
	25	#include "target.h"
	26	#include "value.h"
	27	#include "osabi.h"
	28
f6ad61e3 MK	29	#include "gdb_string.h"
f6ad61e3 MK	30
9ce5c36a JT	31	#include "sparcnbsd-tdep.h"
	32	#include "nbsd-tdep.h"
	33
	34	#include "solib-svr4.h"
	35
	36	#define REG32_OFFSET_PSR (0 * 4)
	37	#define REG32_OFFSET_PC (1 * 4)
	38	#define REG32_OFFSET_NPC (2 * 4)
	39	#define REG32_OFFSET_Y (3 * 4)
	40	#define REG32_OFFSET_GLOBAL (4 * 4)
	41	#define REG32_OFFSET_OUT (12 * 4)
	42
	43	#define REG64_OFFSET_TSTATE (0 * 8)
	44	#define REG64_OFFSET_PC (1 * 8)
	45	#define REG64_OFFSET_NPC (2 * 8)
	46	#define REG64_OFFSET_Y (3 * 8)
	47	#define REG64_OFFSET_GLOBAL (4 * 8)
	48	#define REG64_OFFSET_OUT (12 * 8)
	49
	50	void
	51	sparcnbsd_supply_reg32 (char *regs, int regno)
	52	{
	53	int i;
	54
	55	if (regno == PS_REGNUM \|\| regno == -1)
	56	supply_register (PS_REGNUM, regs + REG32_OFFSET_PSR);
	57
	58	if (regno == PC_REGNUM \|\| regno == -1)
	59	supply_register (PC_REGNUM, regs + REG32_OFFSET_PC);
	60
	61	if (regno == NPC_REGNUM \|\| regno == -1)
	62	supply_register (NPC_REGNUM, regs + REG32_OFFSET_NPC);
	63
	64	if (regno == Y_REGNUM \|\| regno == -1)
	65	supply_register (Y_REGNUM, regs + REG32_OFFSET_Y);
	66
	67	if ((regno >= G0_REGNUM && regno <= G7_REGNUM) \|\| regno == -1)
	68	{
	69	if (regno == G0_REGNUM \|\| regno == -1)
	70	supply_register (G0_REGNUM, NULL); /* %g0 is always zero */
	71	for (i = G1_REGNUM; i <= G7_REGNUM; i++)
	72	{
	73	if (regno == i \|\| regno == -1)
	74	supply_register (i, regs + REG32_OFFSET_GLOBAL +
	75	((i - G0_REGNUM) * 4));
	76	}
	77	}
	78
	79	if ((regno >= O0_REGNUM && regno <= O7_REGNUM) \|\| regno == -1)
	80	{
	81	for (i = O0_REGNUM; i <= O7_REGNUM; i++)
	82	{
	83	if (regno == i \|\| regno == -1)
	84	supply_register (i, regs + REG32_OFFSET_OUT +
	85	((i - O0_REGNUM) * 4));
	86	}
	87	}
	88
	89	/* Inputs and Locals are stored onto the stack by by the kernel. */
	90	if ((regno >= L0_REGNUM && regno <= I7_REGNUM) \|\| regno == -1)
	91	{
	92	CORE_ADDR sp = read_register (SP_REGNUM);
	93	char buf[4];
	94
95	for (i = L0_REGNUM; i <= I7_REGNUM; i++)
96	{
97	if (regno == i \|\| regno == -1)
98	{
99	target_read_memory (sp + ((i - L0_REGNUM) * 4),
100	buf, sizeof (buf));
101	supply_register (i, buf);
102	}
103	}
104	}
105
106	/* FIXME: If we don't set these valid, read_register_bytes() rereads
107	all the regs every time it is called! */
108	if (regno == WIM_REGNUM \|\| regno == -1)
109	supply_register (WIM_REGNUM, NULL);
110	if (regno == TBR_REGNUM \|\| regno == -1)
111	supply_register (TBR_REGNUM, NULL);
112	if (regno == CPS_REGNUM \|\| regno == -1)
113	supply_register (CPS_REGNUM, NULL);
114	}
115
116	void
117	sparcnbsd_supply_reg64 (char *regs, int regno)
118	{
119	int i;
120	char buf[8];
121
122	if (regno == TSTATE_REGNUM \|\| regno == -1)
123	supply_register (PS_REGNUM, regs + REG64_OFFSET_TSTATE);
124
125	if (regno == PC_REGNUM \|\| regno == -1)
126	supply_register (PC_REGNUM, regs + REG64_OFFSET_PC);
127
128	if (regno == NPC_REGNUM \|\| regno == -1)
129	supply_register (NPC_REGNUM, regs + REG64_OFFSET_NPC);
130
131	if (regno == Y_REGNUM \|\| regno == -1)
132	{
133	memset (buf, 0, sizeof (buf));
134	memcpy (&buf[4], regs + REG64_OFFSET_Y, 4);
135	supply_register (Y_REGNUM, buf);
136	}
137
138	if ((regno >= G0_REGNUM && regno <= G7_REGNUM) \|\| regno == -1)
139	{
140	if (regno == G0_REGNUM \|\| regno == -1)
141	supply_register (G0_REGNUM, NULL); /* %g0 is always zero */
142	for (i = G1_REGNUM; i <= G7_REGNUM; i++)
143	{
144	if (regno == i \|\| regno == -1)
145	supply_register (i, regs + REG64_OFFSET_GLOBAL +
146	((i - G0_REGNUM) * 8));
147	}
148	}
149
150	if ((regno >= O0_REGNUM && regno <= O7_REGNUM) \|\| regno == -1)
151	{
152	for (i = O0_REGNUM; i <= O7_REGNUM; i++)
153	{
154	if (regno == i \|\| regno == -1)
155	supply_register (i, regs + REG64_OFFSET_OUT +
156	((i - O0_REGNUM) * 8));
157	}
158	}
159
160	/* Inputs and Locals are stored onto the stack by by the kernel. */
161	if ((regno >= L0_REGNUM && regno <= I7_REGNUM) \|\| regno == -1)
162	{
163	CORE_ADDR sp = read_register (SP_REGNUM);
164	char buf[8];
165
166	if (sp & 1)
167	{
168	/* Registers are 64-bit. */
169	sp += 2047;
170
171	for (i = L0_REGNUM; i <= I7_REGNUM; i++)
172	{
173	if (regno == i \|\| regno == -1)
174	{
175	target_read_memory (sp + ((i - L0_REGNUM) * 8),
176	buf, sizeof (buf));
177	supply_register (i, buf);
178	}
179	}
180	}
181	else
182	{
183	/* Registers are 32-bit. Toss any sign-extension of the stack
184	pointer, clear out the top half of the temporary buffer, and
185	put the register value in the bottom half. */
186
187	sp &= 0xffffffffUL;
188	memset (buf, 0, sizeof (buf));
189	for (i = L0_REGNUM; i <= I7_REGNUM; i++)
190	{
191	if (regno == i \|\| regno == -1)
192	{
193	target_read_memory (sp + ((i - L0_REGNUM) * 4),
194	&buf[4], sizeof (buf));
195	supply_register (i, buf);
196	}
197	}
198	}
199	}
200
201	/* FIXME: If we don't set these valid, read_register_bytes() rereads
202	all the regs every time it is called! */
203	if (regno == WIM_REGNUM \|\| regno == -1)
204	supply_register (WIM_REGNUM, NULL);
205	if (regno == TBR_REGNUM \|\| regno == -1)
206	supply_register (TBR_REGNUM, NULL);
207	if (regno == CPS_REGNUM \|\| regno == -1)
208	supply_register (CPS_REGNUM, NULL);
209	}
210
211	void
212	sparcnbsd_fill_reg32 (char *regs, int regno)
213	{
214	int i;
215
216	if (regno == PS_REGNUM \|\| regno == -1)
217	regcache_collect (PS_REGNUM, regs + REG32_OFFSET_PSR);
218
219	if (regno == PC_REGNUM \|\| regno == -1)
220	regcache_collect (PC_REGNUM, regs + REG32_OFFSET_PC);
221
222	if (regno == NPC_REGNUM \|\| regno == -1)
223	regcache_collect (NPC_REGNUM, regs + REG32_OFFSET_NPC);
224
225	if (regno == Y_REGNUM \|\| regno == -1)
226	regcache_collect (Y_REGNUM, regs + REG32_OFFSET_Y);
227
228	if ((regno >= G0_REGNUM && regno <= G7_REGNUM) \|\| regno == -1)
229	{
230	/* %g0 is always zero */
231	for (i = G1_REGNUM; i <= G7_REGNUM; i++)
232	{
233	if (regno == i \|\| regno == -1)
234	regcache_collect (i, regs + REG32_OFFSET_GLOBAL +
235	((i - G0_REGNUM) * 4));
236	}
237	}
238
239	if ((regno >= O0_REGNUM && regno <= O7_REGNUM) \|\| regno == -1)
240	{
241	for (i = O0_REGNUM; i <= O7_REGNUM; i++)
242	{
243	if (regno == i \|\| regno == -1)
244	regcache_collect (i, regs + REG32_OFFSET_OUT +
245	((i - O0_REGNUM) * 4));
246	}
247	}
248
249	/* Responsibility for the stack regs is pushed off onto the caller. */
250	}
251
252	void
253	sparcnbsd_fill_reg64 (char *regs, int regno)
254	{
255	int i;
256
257	if (regno == TSTATE_REGNUM \|\| regno == -1)
258	regcache_collect (TSTATE_REGNUM, regs + REG64_OFFSET_TSTATE);
259
260	if (regno == PC_REGNUM \|\| regno == -1)
261	regcache_collect (PC_REGNUM, regs + REG64_OFFSET_PC);
262
263	if (regno == NPC_REGNUM \|\| regno == -1)
264	regcache_collect (NPC_REGNUM, regs + REG64_OFFSET_NPC);
265
266	if (regno == Y_REGNUM \|\| regno == -1)
267	regcache_collect (Y_REGNUM, regs + REG64_OFFSET_Y);
268
269	if ((regno >= G0_REGNUM && regno <= G7_REGNUM) \|\| regno == -1)
270	{
271	/* %g0 is always zero */
272	for (i = G1_REGNUM; i <= G7_REGNUM; i++)
273	{
274	if (regno == i \|\| regno == -1)
275	regcache_collect (i, regs + REG64_OFFSET_GLOBAL +
276	((i - G0_REGNUM) * 4));
277	}
278	}
279
280	if ((regno >= O0_REGNUM && regno <= O7_REGNUM) \|\| regno == -1)
281	{
282	for (i = O0_REGNUM; i <= O7_REGNUM; i++)
283	{
284	if (regno == i \|\| regno == -1)
285	regcache_collect (i, regs + REG64_OFFSET_OUT +
286	((i - O0_REGNUM) * 4));
287	}
288	}
289
290	/* Responsibility for the stack regs is pushed off onto the caller. */
291	}
292
293	void
294	sparcnbsd_supply_fpreg32 (char *fpregs, int regno)
295	{
296	int i;
297
298	for (i = 0; i <= 31; i++)
299	{
300	if (regno == (FP0_REGNUM + i) \|\| regno == -1)
301	supply_register (FP0_REGNUM + i, fpregs + (i * 4));
302	}
303
304	if (regno == FPS_REGNUM \|\| regno == -1)
305	supply_register (FPS_REGNUM, fpregs + (32 * 4));
306	}
307
308	void
309	sparcnbsd_supply_fpreg64 (char *fpregs, int regno)
310	{
311	int i;
312
313	for (i = 0; i <= 31; i++)
314	{
315	if (regno == (FP0_REGNUM + i) \|\| regno == -1)
316	supply_register (FP0_REGNUM + i, fpregs + (i * 4));
317	}
318
319	for (; i <= 47; i++)
320	{
321	if (regno == (FP0_REGNUM + i) \|\| regno == -1)
322	supply_register (FP0_REGNUM + i, fpregs + (32 * 4) + (i * 8));
323	}
324
325	if (regno == FPS_REGNUM \|\| regno == -1)
326	supply_register (FPS_REGNUM, fpregs + (32 * 4) + (16 * 8));
327
328	/* XXX %gsr */
329	}
330
331	void
332	sparcnbsd_fill_fpreg32 (char *fpregs, int regno)
333	{
334	int i;
335
336	for (i = 0; i <= 31; i++)
337	{
338	if (regno == (FP0_REGNUM + i) \|\| regno == -1)
339	regcache_collect (FP0_REGNUM + i, fpregs + (i * 4));
340	}
341
342	if (regno == FPS_REGNUM \|\| regno == -1)
343	regcache_collect (FPS_REGNUM, fpregs + (32 * 4));
344	}
345
346	void
347	sparcnbsd_fill_fpreg64 (char *fpregs, int regno)
348	{
349	int i;
350
351	for (i = 0; i <= 31; i++)
352	{
353	if (regno == (FP0_REGNUM + i) \|\| regno == -1)
354	regcache_collect (FP0_REGNUM + i, fpregs + (i * 4));
355	}
356
357	for (; i <= 47; i++)
358	{
359	if (regno == (FP0_REGNUM + i) \|\| regno == -1)
360	regcache_collect (FP0_REGNUM + i, fpregs + (32 * 4) + (i * 8));
361	}
362
363	if (regno == FPS_REGNUM \|\| regno == -1)
364	regcache_collect (FPS_REGNUM, fpregs + (32 * 4) + (16 * 8));
365
366	/* XXX %gsr */
367	}
368
369	/* Unlike other NetBSD implementations, the SPARC port historically used
370	.reg and .reg2 (see bfd/netbsd-core.c), and as such, we can share one
371	routine for a.out and ELF core files. */
372	static void
373	fetch_core_registers (char *core_reg_sect, unsigned core_reg_size, int which,
374	CORE_ADDR ignore)
375	{
376	int reg_size, fpreg_size;
377
378	if (gdbarch_ptr_bit (current_gdbarch) == 32)
379	{
380	reg_size = (20 * 4);
381	fpreg_size = (33 * 4);
382	}
383	else
384	{
385	reg_size = (20 * 8);
386	fpreg_size = (64 * 4)
387	+ 8 /* fsr */
388	+ 4 /* gsr */
389	+ 4; /* pad */
390	}
391
392	switch (which)
393	{
394	case 0: /* Integer registers */
395	if (core_reg_size != reg_size)
396	warning ("Wrong size register set in core file.");
397	else if (gdbarch_ptr_bit (current_gdbarch) == 32)
398	sparcnbsd_supply_reg32 (core_reg_sect, -1);
399	else
400	sparcnbsd_supply_reg64 (core_reg_sect, -1);
401	break;
402
403	case 2: /* Floating pointer registers */
404	if (core_reg_size != fpreg_size)
405	warning ("Wrong size FP register set in core file.");
406	else if (gdbarch_ptr_bit (current_gdbarch) == 32)
407	sparcnbsd_supply_fpreg32 (core_reg_sect, -1);
408	else
409	sparcnbsd_supply_fpreg64 (core_reg_sect, -1);
410	break;
411
412	default:
413	/* Don't know what kind of register request this is; just ignore it. */
414	break;
415	}
416	}
417
418	static struct core_fns sparcnbsd_core_fns =
419	{
420	bfd_target_unknown_flavour, /* core_flavour */
421	default_check_format, /* check_format */
422	default_core_sniffer, /* core_sniffer */
423	fetch_core_registers, /* core_read_registers */
424	NULL
425	};
426
427	static struct core_fns sparcnbsd_elfcore_fns =
428	{
429	bfd_target_elf_flavour, /* core_flavour */
430	default_check_format, /* check_format */
431	default_core_sniffer, /* core_sniffer */
432	fetch_core_registers, /* core_read_registers */
433	NULL
434	};
435
436	/* FIXME: Need PC_IN_SIGTRAMP() support, but NetBSD/sparc signal trampolines
437	aren't easily identified. */
438
439	static int
440	sparcnbsd_get_longjmp_target_32 (CORE_ADDR *pc)
441	{
442	CORE_ADDR jb_addr;
443	char buf[4];
444
445	jb_addr = read_register (O0_REGNUM);
446
447	if (target_read_memory (jb_addr + 12, buf, sizeof (buf)))
448	return 0;
449
450	*pc = extract_address (buf, sizeof (buf));
451
452	return 1;
453	}
454
455	static int
456	sparcnbsd_get_longjmp_target_64 (CORE_ADDR *pc)
457	{
458	CORE_ADDR jb_addr;
459	char buf[8];
460
461	jb_addr = read_register (O0_REGNUM);
462
463	if (target_read_memory (jb_addr + 16, buf, sizeof (buf)))
464	return 0;
465
466	*pc = extract_address (buf, sizeof (buf));
467
468	return 1;
469	}
470
471	static int
472	sparcnbsd_aout_in_solib_call_trampoline (CORE_ADDR pc, char *name)
473	{
474	if (strcmp (name, "_DYNAMIC") == 0)
475	return 1;
476
477	return 0;
478	}
479
480	static void
481	sparcnbsd_init_abi_common (struct gdbarch_info info,
482	struct gdbarch *gdbarch)
483	{
484	set_gdbarch_get_longjmp_target (gdbarch, gdbarch_ptr_bit (gdbarch) == 32 ?
485	sparcnbsd_get_longjmp_target_32 :
486	sparcnbsd_get_longjmp_target_64);
487	}
488
489	static void
490	sparcnbsd_init_abi_aout (struct gdbarch_info info,
491	struct gdbarch *gdbarch)
492	{
493	sparcnbsd_init_abi_common (info, gdbarch);
494
495	set_gdbarch_in_solib_call_trampoline (gdbarch,
496	sparcnbsd_aout_in_solib_call_trampoline);
497	}
498
499	static void
500	sparcnbsd_init_abi_elf (struct gdbarch_info info,
501	struct gdbarch *gdbarch)
502	{
503	sparcnbsd_init_abi_common (info, gdbarch);
504
3d9b49b0 JT	505	set_gdbarch_pc_in_sigtramp (gdbarch, nbsd_pc_in_sigtramp);
3d9b49b0 JT	506
9ce5c36a JT	507	set_solib_svr4_fetch_link_map_offsets (gdbarch,
	508	gdbarch_ptr_bit (gdbarch) == 32 ?
	509	nbsd_ilp32_solib_svr4_fetch_link_map_offsets :
	510	nbsd_lp64_solib_svr4_fetch_link_map_offsets);
	511	}
	512
	513	static enum gdb_osabi
	514	sparcnbsd_aout_osabi_sniffer (bfd *abfd)
	515	{
	516	if (strcmp (bfd_get_target (abfd), "a.out-sparc-netbsd") == 0)
	517	return GDB_OSABI_NETBSD_AOUT;
	518
	519	return GDB_OSABI_UNKNOWN;
	520	}
	521
	522	void
	523	_initialize_sparnbsd_tdep (void)
	524	{
	525	gdbarch_register_osabi_sniffer (bfd_arch_sparc, bfd_target_aout_flavour,
	526	sparcnbsd_aout_osabi_sniffer);
	527
05816f70	528	gdbarch_register_osabi (bfd_arch_sparc, 0, GDB_OSABI_NETBSD_AOUT,
9ce5c36a	529	sparcnbsd_init_abi_aout);
05816f70	530	gdbarch_register_osabi (bfd_arch_sparc, 0, GDB_OSABI_NETBSD_ELF,
9ce5c36a JT	531	sparcnbsd_init_abi_elf);
	532
	533	add_core_fns (&sparcnbsd_core_fns);
	534	add_core_fns (&sparcnbsd_elfcore_fns);
	535	}