[deliverable/binutils-gdb.git] / gdb / cxux-nat.c

/* Native support for Motorola 88k running Harris CX/UX.
   Copyright 1988, 1990, 1991, 1992, 1993, 1994 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 "frame.h"
#include "inferior.h"

#include <sys/types.h>
#include <sys/param.h>
#include <sys/dir.h>
#include <signal.h>
#include "gdbcore.h"
#include <sys/user.h>

#include "bfd.h"
#include "symfile.h"
#include "objfiles.h"
#include "symtab.h"

#ifndef USER			/* added to support BCS ptrace_user */
#define USER ptrace_user
#endif
#include <sys/ioctl.h>
#include <fcntl.h>
#include <sys/file.h>
#include "gdb_stat.h"

#include "symtab.h"
#include "setjmp.h"
#include "value.h"

#include <sys/ptrace.h>

/* CX/UX provides them already, but as word offsets instead of char offsets */
#define SXIP_OFFSET (PT_SXIP * 4)
#define SNIP_OFFSET (PT_SNIP * 4)
#define SFIP_OFFSET (PT_SFIP * 4)
#define PSR_OFFSET  (PT_PSR  * sizeof(int))
#define FPSR_OFFSET (PT_FPSR * sizeof(int))
#define FPCR_OFFSET (PT_FPCR * sizeof(int))

#define XREGADDR(r) (((char *)&u.pt_x0-(char *)&u) + \
                     ((r)-X0_REGNUM)*sizeof(X_REGISTER_RAW_TYPE))

extern int have_symbol_file_p ();

extern jmp_buf stack_jmp;

extern int errno;

void
fetch_inferior_registers (regno)
     int regno;			/* Original value discarded */
{
  register unsigned int regaddr;
  char buf[MAX_REGISTER_RAW_SIZE];
  register int i;

  struct USER u;
  unsigned int offset;

  offset = (char *) &u.pt_r0 - (char *) &u;
  regaddr = offset;		/* byte offset to r0; */

/*  offset = ptrace (3, inferior_pid, (PTRACE_ARG3_TYPE) offset, 0) - KERNEL_U_ADDR; */
  for (regno = 0; regno < PC_REGNUM; regno++)
    {
      /*regaddr = register_addr (regno, offset); */
      /* 88k enhancement  */

      for (i = 0; i < REGISTER_RAW_SIZE (regno); i += sizeof (int))
	{
	  *(int *) &buf[i] = ptrace (3, inferior_pid,
				     (PTRACE_ARG3_TYPE) regaddr, 0);
	  regaddr += sizeof (int);
	}
      supply_register (regno, buf);
    }
  /* now load up registers 32-37; special pc registers */
  *(int *) &buf[0] = ptrace (3, inferior_pid,
			     (PTRACE_ARG3_TYPE) PSR_OFFSET, 0);
  supply_register (PSR_REGNUM, buf);
  *(int *) &buf[0] = ptrace (3, inferior_pid,
			     (PTRACE_ARG3_TYPE) FPSR_OFFSET, 0);
  supply_register (FPSR_REGNUM, buf);
  *(int *) &buf[0] = ptrace (3, inferior_pid,
			     (PTRACE_ARG3_TYPE) FPCR_OFFSET, 0);
  supply_register (FPCR_REGNUM, buf);
  *(int *) &buf[0] = ptrace (3, inferior_pid,
			     (PTRACE_ARG3_TYPE) SXIP_OFFSET, 0);
  supply_register (SXIP_REGNUM, buf);
  *(int *) &buf[0] = ptrace (3, inferior_pid,
			     (PTRACE_ARG3_TYPE) SNIP_OFFSET, 0);
  supply_register (SNIP_REGNUM, buf);
  *(int *) &buf[0] = ptrace (3, inferior_pid,
			     (PTRACE_ARG3_TYPE) SFIP_OFFSET, 0);
  supply_register (SFIP_REGNUM, buf);

  if (target_is_m88110)
    {
      for (regaddr = XREGADDR (X0_REGNUM), regno = X0_REGNUM;
	   regno < NUM_REGS;
	   regno++, regaddr += 16)
	{
	  X_REGISTER_RAW_TYPE xval;

	  *(int *) &xval.w1 = ptrace (3, inferior_pid,
				      (PTRACE_ARG3_TYPE) regaddr, 0);
	  *(int *) &xval.w2 = ptrace (3, inferior_pid,
				      (PTRACE_ARG3_TYPE) (regaddr + 4), 0);
	  *(int *) &xval.w3 = ptrace (3, inferior_pid,
				      (PTRACE_ARG3_TYPE) (regaddr + 8), 0);
	  *(int *) &xval.w4 = ptrace (3, inferior_pid,
				      (PTRACE_ARG3_TYPE) (regaddr + 12), 0);
	  supply_register (regno, (void *) &xval);
	}
    }
}

/* 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 (int regno)
{
  register unsigned int regaddr;
  char buf[80];

  struct USER u;

  unsigned int offset = (char *) &u.pt_r0 - (char *) &u;

  regaddr = offset;

  /* Don't try to deal with EXIP_REGNUM or ENIP_REGNUM, because I think either
     svr3 doesn't run on an 88110, or the kernel isolates the different (not
     completely sure this is true, but seems to be.  */
  if (regno >= 0)
    {
      /*      regaddr = register_addr (regno, offset); */
      if (regno < PC_REGNUM)
	{
	  regaddr = offset + regno * sizeof (int);
	  errno = 0;
	  ptrace (6, inferior_pid,
		  (PTRACE_ARG3_TYPE) regaddr, read_register (regno));
	  if (errno != 0)
	    {
	      sprintf (buf, "writing register number %d", regno);
	      perror_with_name (buf);
	    }
	}
      else if (regno == PSR_REGNUM)
	ptrace (6, inferior_pid,
		(PTRACE_ARG3_TYPE) PSR_OFFSET, read_register (regno));
      else if (regno == FPSR_REGNUM)
	ptrace (6, inferior_pid,
		(PTRACE_ARG3_TYPE) FPSR_OFFSET, read_register (regno));
      else if (regno == FPCR_REGNUM)
	ptrace (6, inferior_pid,
		(PTRACE_ARG3_TYPE) FPCR_OFFSET, read_register (regno));
      else if (regno == SXIP_REGNUM)
	ptrace (6, inferior_pid,
		(PTRACE_ARG3_TYPE) SXIP_OFFSET, read_register (regno));
      else if (regno == SNIP_REGNUM)
	ptrace (6, inferior_pid,
		(PTRACE_ARG3_TYPE) SNIP_OFFSET, read_register (regno));
      else if (regno == SFIP_REGNUM)
	ptrace (6, inferior_pid,
		(PTRACE_ARG3_TYPE) SFIP_OFFSET, read_register (regno));
      else if (target_is_m88110 && regno < NUM_REGS)
	{
	  X_REGISTER_RAW_TYPE xval;

	  read_register_bytes (REGISTER_BYTE (regno), (char *) &xval,
			       sizeof (X_REGISTER_RAW_TYPE));
	  regaddr = XREGADDR (regno);
	  ptrace (6, inferior_pid, (PTRACE_ARG3_TYPE) regaddr, xval.w1);
	  ptrace (6, inferior_pid, (PTRACE_ARG3_TYPE) regaddr + 4, xval.w2);
	  ptrace (6, inferior_pid, (PTRACE_ARG3_TYPE) regaddr + 8, xval.w3);
	  ptrace (6, inferior_pid, (PTRACE_ARG3_TYPE) regaddr + 12, xval.w4);
	}
      else
	printf_unfiltered ("Bad register number for store_inferior routine\n");
    }
  else
    {
      for (regno = 0; regno < PC_REGNUM; regno++)
	{
	  /*      regaddr = register_addr (regno, offset); */
	  errno = 0;
	  regaddr = offset + regno * sizeof (int);
	  ptrace (6, inferior_pid,
		  (PTRACE_ARG3_TYPE) regaddr, read_register (regno));
	  if (errno != 0)
	    {
	      sprintf (buf, "writing register number %d", regno);
	      perror_with_name (buf);
	    }
	}
      ptrace (6, inferior_pid,
	      (PTRACE_ARG3_TYPE) PSR_OFFSET, read_register (regno));
      ptrace (6, inferior_pid,
	      (PTRACE_ARG3_TYPE) FPSR_OFFSET, read_register (regno));
      ptrace (6, inferior_pid,
	      (PTRACE_ARG3_TYPE) FPCR_OFFSET, read_register (regno));
      ptrace (6, inferior_pid,
	      (PTRACE_ARG3_TYPE) SXIP_OFFSET, read_register (SXIP_REGNUM));
      ptrace (6, inferior_pid,
	      (PTRACE_ARG3_TYPE) SNIP_OFFSET, read_register (SNIP_REGNUM));
      ptrace (6, inferior_pid,
	      (PTRACE_ARG3_TYPE) SFIP_OFFSET, read_register (SFIP_REGNUM));
      if (target_is_m88110)
	{
	  for (regno = X0_REGNUM; regno < NUM_REGS; regno++)
	    {
	      X_REGISTER_RAW_TYPE xval;

	      read_register_bytes (REGISTER_BYTE (regno), (char *) &xval,
				   sizeof (X_REGISTER_RAW_TYPE));
	      regaddr = XREGADDR (regno);
	      ptrace (6, inferior_pid, (PTRACE_ARG3_TYPE) regaddr, xval.w1);
	      ptrace (6, inferior_pid, (PTRACE_ARG3_TYPE) (regaddr + 4), xval.w2);
	      ptrace (6, inferior_pid, (PTRACE_ARG3_TYPE) (regaddr + 8), xval.w3);
	      ptrace (6, inferior_pid, (PTRACE_ARG3_TYPE) (regaddr + 12), xval.w4);
	    }
	}
    }
}

/* blockend is the address of the end of the user structure */

m88k_register_u_addr (int blockend, int regnum)
{
  struct USER u;
  int ustart = blockend - sizeof (struct USER);

  if (regnum < PSR_REGNUM)
    return (ustart + ((int) &u.pt_r0 - (int) &u) +
	    REGISTER_SIZE * regnum);
  else if (regnum == PSR_REGNUM)
    return (ustart + ((int) &u.pt_psr) - (int) &u);
  else if (regnum == FPSR_REGNUM)
    return (ustart + ((int) &u.pt_fpsr) - (int) &u);
  else if (regnum == FPCR_REGNUM)
    return (ustart + ((int) &u.pt_fpcr) - (int) &u);
  else if (regnum == SXIP_REGNUM)
    return (ustart + SXIP_OFFSET);
  else if (regnum == SNIP_REGNUM)
    return (ustart + SNIP_OFFSET);
  else if (regnum == SFIP_REGNUM)
    return (ustart + SFIP_OFFSET);
  else if (target_is_m88110)
    return (ustart + ((int) &u.pt_x0 - (int) &u) +	/* Must be X register */
	    sizeof (u.pt_x0) * (regnum - X0_REGNUM));
  else
    return (blockend + REGISTER_SIZE * regnum);
}

#ifdef USE_PROC_FS

#include <sys/procfs.h>

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

/*  Given a pointer to a general register set in /proc format (gregset_t *),
   unpack the register contents and supply them as gdb's idea of the current
   register values. */

void
supply_gregset (gregset_t *gregsetp)
{
  register int regi;
  register greg_t *regp = (greg_t *) gregsetp;

  for (regi = 0; regi <= SP_REGNUM; regi++)
    supply_register (regi, (char *) (regp + regi));

  supply_register (SXIP_REGNUM, (char *) (regp + R_XIP));
  supply_register (SNIP_REGNUM, (char *) (regp + R_NIP));
  supply_register (SFIP_REGNUM, (char *) (regp + R_FIP));
  supply_register (PSR_REGNUM, (char *) (regp + R_PSR));
  supply_register (FPSR_REGNUM, (char *) (regp + R_FPSR));
  supply_register (FPCR_REGNUM, (char *) (regp + R_FPCR));
}

void
fill_gregset (gregset_t *gregsetp, int regno)
{
  int regi;
  register greg_t *regp = (greg_t *) gregsetp;

  for (regi = 0; regi <= R_R31; regi++)
    if ((regno == -1) || (regno == regi))
      *(regp + regi) = *(int *) &registers[REGISTER_BYTE (regi)];

  if ((regno == -1) || (regno == SXIP_REGNUM))
    *(regp + R_XIP) = *(int *) &registers[REGISTER_BYTE (SXIP_REGNUM)];
  if ((regno == -1) || (regno == SNIP_REGNUM))
    *(regp + R_NIP) = *(int *) &registers[REGISTER_BYTE (SNIP_REGNUM)];
  if ((regno == -1) || (regno == SFIP_REGNUM))
    *(regp + R_FIP) = *(int *) &registers[REGISTER_BYTE (SFIP_REGNUM)];
  if ((regno == -1) || (regno == PSR_REGNUM))
    *(regp + R_PSR) = *(int *) &registers[REGISTER_BYTE (PSR_REGNUM)];
  if ((regno == -1) || (regno == FPSR_REGNUM))
    *(regp + R_FPSR) = *(int *) &registers[REGISTER_BYTE (FPSR_REGNUM)];
  if ((regno == -1) || (regno == FPCR_REGNUM))
    *(regp + R_FPCR) = *(int *) &registers[REGISTER_BYTE (FPCR_REGNUM)];
}

#endif /* USE_PROC_FS */

/* This support adds the equivalent of adb's % command.  When
   the `add-shared-symbol-files' command is given, this routine scans 
   the dynamic linker's link map and reads the minimal symbols
   from each shared object file listed in the map. */

struct link_map
{
  unsigned long l_addr;		/* address at which object is mapped */
  char *l_name;			/* full name of loaded object */
  void *l_ld;			/* dynamic structure of object */
  struct link_map *l_next;	/* next link object */
  struct link_map *l_prev;	/* previous link object */
};

#define LINKS_MAP_POINTER "_ld_tail"
#define LIBC_FILE "/usr/lib/libc.so.1"
#define SHARED_OFFSET 0xf0001000

#ifndef PATH_MAX
#define PATH_MAX 1023		/* maximum size of path name on OS */
#endif

void
add_shared_symbol_files (void)
{
  void *desc;
  struct link_map *ld_map, *lm, lms;
  struct minimal_symbol *minsym;
  struct objfile *objfile;
  char *path_name;

  if (!inferior_pid)
    {
      warning ("The program has not yet been started.");
      return;
    }

  objfile = symbol_file_add (LIBC_FILE, 0, NULL, 0, OBJF_READNOW);
  minsym = lookup_minimal_symbol (LINKS_MAP_POINTER, objfile);

  ld_map = (struct link_map *)
    read_memory_integer (((int) SYMBOL_VALUE_ADDRESS (minsym) + SHARED_OFFSET), 4);
  lm = ld_map;
  while (lm)
    {
      int local_errno = 0;

      read_memory ((CORE_ADDR) lm, (char *) &lms, sizeof (struct link_map));
      if (lms.l_name)
	{
	  if (target_read_string ((CORE_ADDR) lms.l_name, &path_name,
				  PATH_MAX, &local_errno))
	    {
	      struct section_addr_info section_addrs;
	      memset (&section_addrs, 0, sizeof (section_addrs));
	      section_addrs.other[0].addr = lms.l_addr;
              section_addrs.other[0].name = ".text";
	      symbol_file_add (path_name, 1, &section_addrs, 0, 0);
	      free (path_name);
	    }
	}
      /* traverse links in reverse order so that we get the
         the symbols the user actually gets. */
      lm = lms.l_prev;
    }

  /* Getting new symbols may change our opinion about what is
     frameless.  */
  reinit_frame_cache ();
}

#if defined(_ES_MP)

#include <sys/regset.h>

unsigned int
m88k_harris_core_register_addr (int regno, int reg_ptr)
{
  unsigned int word_offset;

  switch (regno)
    {
    case PSR_REGNUM:
      word_offset = R_EPSR;
      break;
    case FPSR_REGNUM:
      word_offset = R_FPSR;
      break;
    case FPCR_REGNUM:
      word_offset = R_FPCR;
      break;
    case SXIP_REGNUM:
      word_offset = R_EXIP;
      break;
    case SNIP_REGNUM:
      word_offset = R_ENIP;
      break;
    case SFIP_REGNUM:
      word_offset = R_EFIP;
      break;
    default:
      if (regno <= FP_REGNUM)
	word_offset = regno;
      else
	word_offset = ((regno - X0_REGNUM) * 4);
    }
  return (word_offset * 4);
}

#endif /* _ES_MP */

void
_initialize_m88k_nat (void)
{
#ifdef _ES_MP
  /* Enable 88110 support, as we don't support the 88100 under ES/MP.  */

  target_is_m88110 = 1;
#elif defined(_CX_UX)
  /* Determine whether we're running on an 88100 or an 88110.  */
  target_is_m88110 = (sinfo (SYSMACHINE, 0) == SYS5800);
#endif /* _CX_UX */
}

#ifdef _ES_MP
/* Given a pointer to a general register set in /proc format (gregset_t *),
   unpack the register contents and supply them as gdb's idea of the current
   register values. */

void
supply_gregset (gregset_t *gregsetp)
{
  register int regi;
  register greg_t *regp = (greg_t *) gregsetp;

  for (regi = 0; regi < R_R31; regi++)
    {
      supply_register (regi, (char *) (regp + regi));
    }
  supply_register (PSR_REGNUM, (char *) (regp + R_EPSR));
  supply_register (FPSR_REGNUM, (char *) (regp + R_FPSR));
  supply_register (FPCR_REGNUM, (char *) (regp + R_FPCR));
  supply_register (SXIP_REGNUM, (char *) (regp + R_EXIP));
  supply_register (SNIP_REGNUM, (char *) (regp + R_ENIP));
  supply_register (SFIP_REGNUM, (char *) (regp + R_EFIP));
}

/* Given a pointer to a floating point register set in /proc format
   (fpregset_t *), unpack the register contents and supply them as gdb's
   idea of the current floating point register values.  */

void
supply_fpregset (fpregset_t *fpregsetp)
{
  register int regi;
  char *from;

  for (regi = FP0_REGNUM; regi <= FPLAST_REGNUM; regi++)
    {
      from = (char *) &((*fpregsetp)[regi - FP0_REGNUM]);
      supply_register (regi, from);
    }
}

#endif /* _ES_MP */

#ifdef _CX_UX

#include <sys/regset.h>

unsigned int
m88k_harris_core_register_addr (int regno, int reg_ptr)
{
  unsigned int word_offset;

  switch (regno)
    {
    case PSR_REGNUM:
      word_offset = R_PSR;
      break;
    case FPSR_REGNUM:
      word_offset = R_FPSR;
      break;
    case FPCR_REGNUM:
      word_offset = R_FPCR;
      break;
    case SXIP_REGNUM:
      word_offset = R_XIP;
      break;
    case SNIP_REGNUM:
      word_offset = R_NIP;
      break;
    case SFIP_REGNUM:
      word_offset = R_FIP;
      break;
    default:
      if (regno <= FP_REGNUM)
	word_offset = regno;
      else
	word_offset = ((regno - X0_REGNUM) * 4) + R_X0;
    }
  return (word_offset * 4);
}

#endif /* _CX_UX */
Commit	Line	Data
c906108c SS	1	/* Native support for Motorola 88k running Harris CX/UX.
	2	Copyright 1988, 1990, 1991, 1992, 1993, 1994 Free Software Foundation, Inc.
	3
c5aa993b	4	This file is part of GDB.
c906108c	5
c5aa993b JM	6	This program is free software; you can redistribute it and/or modify
	7	it under the terms of the GNU General Public License as published by
	8	the Free Software Foundation; either version 2 of the License, or
	9	(at your option) any later version.
c906108c	10
c5aa993b JM	11	This program is distributed in the hope that it will be useful,
	12	but WITHOUT ANY WARRANTY; without even the implied warranty of
	13	MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
	14	GNU General Public License for more details.
c906108c	15
c5aa993b JM	16	You should have received a copy of the GNU General Public License
	17	along with this program; if not, write to the Free Software
	18	Foundation, Inc., 59 Temple Place - Suite 330,
	19	Boston, MA 02111-1307, USA. */
c906108c SS	20
	21	#include "defs.h"
	22	#include "frame.h"
	23	#include "inferior.h"
	24
	25	#include <sys/types.h>
	26	#include <sys/param.h>
	27	#include <sys/dir.h>
	28	#include <signal.h>
	29	#include "gdbcore.h"
	30	#include <sys/user.h>
	31
	32	#include "bfd.h"
	33	#include "symfile.h"
	34	#include "objfiles.h"
	35	#include "symtab.h"
	36
	37	#ifndef USER /* added to support BCS ptrace_user */
	38	#define USER ptrace_user
	39	#endif
	40	#include <sys/ioctl.h>
	41	#include <fcntl.h>
	42	#include <sys/file.h>
	43	#include "gdb_stat.h"
	44
	45	#include "symtab.h"
	46	#include "setjmp.h"
	47	#include "value.h"
	48
	49	#include <sys/ptrace.h>
	50
	51	/* CX/UX provides them already, but as word offsets instead of char offsets */
	52	#define SXIP_OFFSET (PT_SXIP * 4)
	53	#define SNIP_OFFSET (PT_SNIP * 4)
	54	#define SFIP_OFFSET (PT_SFIP * 4)
	55	#define PSR_OFFSET (PT_PSR * sizeof(int))
	56	#define FPSR_OFFSET (PT_FPSR * sizeof(int))
	57	#define FPCR_OFFSET (PT_FPCR * sizeof(int))
	58
	59	#define XREGADDR(r) (((char )&u.pt_x0-(char )&u) + \
	60	((r)-X0_REGNUM)*sizeof(X_REGISTER_RAW_TYPE))
	61
c5aa993b	62	extern int have_symbol_file_p ();
c906108c SS	63
	64	extern jmp_buf stack_jmp;
	65
	66	extern int errno;
c906108c SS	67
	68	void
	69	fetch_inferior_registers (regno)
c5aa993b	70	int regno; /* Original value discarded */
c906108c SS	71	{
	72	register unsigned int regaddr;
	73	char buf[MAX_REGISTER_RAW_SIZE];
	74	register int i;
	75
	76	struct USER u;
	77	unsigned int offset;
	78
c5aa993b JM	79	offset = (char ) &u.pt_r0 - (char ) &u;
c5aa993b JM	80	regaddr = offset; /* byte offset to r0; */
c906108c SS	81
	82	/* offset = ptrace (3, inferior_pid, (PTRACE_ARG3_TYPE) offset, 0) - KERNEL_U_ADDR; */
	83	for (regno = 0; regno < PC_REGNUM; regno++)
	84	{
c5aa993b JM	85	/regaddr = register_addr (regno, offset); /
	86	/* 88k enhancement */
	87
c906108c	88	for (i = 0; i < REGISTER_RAW_SIZE (regno); i += sizeof (int))
c5aa993b JM	89	{
c5aa993b JM	90	(int ) &buf[i] = ptrace (3, inferior_pid,
c906108c	91	(PTRACE_ARG3_TYPE) regaddr, 0);
c5aa993b JM	92	regaddr += sizeof (int);
c5aa993b JM	93	}
c906108c SS	94	supply_register (regno, buf);
c906108c SS	95	}
c5aa993b JM	96	/* now load up registers 32-37; special pc registers */
	97	(int ) &buf[0] = ptrace (3, inferior_pid,
	98	(PTRACE_ARG3_TYPE) PSR_OFFSET, 0);
	99	supply_register (PSR_REGNUM, buf);
	100	(int ) &buf[0] = ptrace (3, inferior_pid,
	101	(PTRACE_ARG3_TYPE) FPSR_OFFSET, 0);
	102	supply_register (FPSR_REGNUM, buf);
	103	(int ) &buf[0] = ptrace (3, inferior_pid,
	104	(PTRACE_ARG3_TYPE) FPCR_OFFSET, 0);
	105	supply_register (FPCR_REGNUM, buf);
	106	(int ) &buf[0] = ptrace (3, inferior_pid,
	107	(PTRACE_ARG3_TYPE) SXIP_OFFSET, 0);
	108	supply_register (SXIP_REGNUM, buf);
	109	(int ) &buf[0] = ptrace (3, inferior_pid,
	110	(PTRACE_ARG3_TYPE) SNIP_OFFSET, 0);
	111	supply_register (SNIP_REGNUM, buf);
	112	(int ) &buf[0] = ptrace (3, inferior_pid,
	113	(PTRACE_ARG3_TYPE) SFIP_OFFSET, 0);
	114	supply_register (SFIP_REGNUM, buf);
	115
	116	if (target_is_m88110)
	117	{
	118	for (regaddr = XREGADDR (X0_REGNUM), regno = X0_REGNUM;
	119	regno < NUM_REGS;
	120	regno++, regaddr += 16)
	121	{
	122	X_REGISTER_RAW_TYPE xval;
	123
	124	(int ) &xval.w1 = ptrace (3, inferior_pid,
	125	(PTRACE_ARG3_TYPE) regaddr, 0);
	126	(int ) &xval.w2 = ptrace (3, inferior_pid,
	127	(PTRACE_ARG3_TYPE) (regaddr + 4), 0);
	128	(int ) &xval.w3 = ptrace (3, inferior_pid,
	129	(PTRACE_ARG3_TYPE) (regaddr + 8), 0);
	130	(int ) &xval.w4 = ptrace (3, inferior_pid,
	131	(PTRACE_ARG3_TYPE) (regaddr + 12), 0);
	132	supply_register (regno, (void *) &xval);
	133	}
	134	}
c906108c SS	135	}
	136
	137	/* Store our register values back into the inferior.
	138	If REGNO is -1, do this for all registers.
	139	Otherwise, REGNO specifies which register (so we can save time). */
	140
	141	void
fba45db2	142	store_inferior_registers (int regno)
c906108c SS	143	{
	144	register unsigned int regaddr;
	145	char buf[80];
	146
	147	struct USER u;
	148
	149	unsigned int offset = (char ) &u.pt_r0 - (char ) &u;
	150
	151	regaddr = offset;
	152
	153	/* Don't try to deal with EXIP_REGNUM or ENIP_REGNUM, because I think either
	154	svr3 doesn't run on an 88110, or the kernel isolates the different (not
	155	completely sure this is true, but seems to be. */
	156	if (regno >= 0)
	157	{
	158	/* regaddr = register_addr (regno, offset); */
	159	if (regno < PC_REGNUM)
c5aa993b	160	{
c906108c SS	161	regaddr = offset + regno * sizeof (int);
	162	errno = 0;
	163	ptrace (6, inferior_pid,
	164	(PTRACE_ARG3_TYPE) regaddr, read_register (regno));
	165	if (errno != 0)
	166	{
	167	sprintf (buf, "writing register number %d", regno);
	168	perror_with_name (buf);
	169	}
	170	}
	171	else if (regno == PSR_REGNUM)
c5aa993b JM	172	ptrace (6, inferior_pid,
c5aa993b JM	173	(PTRACE_ARG3_TYPE) PSR_OFFSET, read_register (regno));
c906108c	174	else if (regno == FPSR_REGNUM)
c5aa993b JM	175	ptrace (6, inferior_pid,
c5aa993b JM	176	(PTRACE_ARG3_TYPE) FPSR_OFFSET, read_register (regno));
c906108c	177	else if (regno == FPCR_REGNUM)
c5aa993b JM	178	ptrace (6, inferior_pid,
c5aa993b JM	179	(PTRACE_ARG3_TYPE) FPCR_OFFSET, read_register (regno));
c906108c SS	180	else if (regno == SXIP_REGNUM)
c906108c SS	181	ptrace (6, inferior_pid,
c5aa993b	182	(PTRACE_ARG3_TYPE) SXIP_OFFSET, read_register (regno));
c906108c SS	183	else if (regno == SNIP_REGNUM)
c906108c SS	184	ptrace (6, inferior_pid,
c5aa993b	185	(PTRACE_ARG3_TYPE) SNIP_OFFSET, read_register (regno));
c906108c SS	186	else if (regno == SFIP_REGNUM)
c906108c SS	187	ptrace (6, inferior_pid,
c5aa993b	188	(PTRACE_ARG3_TYPE) SFIP_OFFSET, read_register (regno));
c906108c	189	else if (target_is_m88110 && regno < NUM_REGS)
c5aa993b JM	190	{
	191	X_REGISTER_RAW_TYPE xval;
	192
	193	read_register_bytes (REGISTER_BYTE (regno), (char *) &xval,
	194	sizeof (X_REGISTER_RAW_TYPE));
	195	regaddr = XREGADDR (regno);
	196	ptrace (6, inferior_pid, (PTRACE_ARG3_TYPE) regaddr, xval.w1);
	197	ptrace (6, inferior_pid, (PTRACE_ARG3_TYPE) regaddr + 4, xval.w2);
	198	ptrace (6, inferior_pid, (PTRACE_ARG3_TYPE) regaddr + 8, xval.w3);
	199	ptrace (6, inferior_pid, (PTRACE_ARG3_TYPE) regaddr + 12, xval.w4);
	200	}
c906108c SS	201	else
	202	printf_unfiltered ("Bad register number for store_inferior routine\n");
	203	}
	204	else
c5aa993b	205	{
c906108c SS	206	for (regno = 0; regno < PC_REGNUM; regno++)
	207	{
	208	/* regaddr = register_addr (regno, offset); */
	209	errno = 0;
	210	regaddr = offset + regno * sizeof (int);
	211	ptrace (6, inferior_pid,
	212	(PTRACE_ARG3_TYPE) regaddr, read_register (regno));
	213	if (errno != 0)
	214	{
	215	sprintf (buf, "writing register number %d", regno);
	216	perror_with_name (buf);
	217	}
	218	}
	219	ptrace (6, inferior_pid,
c5aa993b JM	220	(PTRACE_ARG3_TYPE) PSR_OFFSET, read_register (regno));
	221	ptrace (6, inferior_pid,
	222	(PTRACE_ARG3_TYPE) FPSR_OFFSET, read_register (regno));
	223	ptrace (6, inferior_pid,
	224	(PTRACE_ARG3_TYPE) FPCR_OFFSET, read_register (regno));
	225	ptrace (6, inferior_pid,
	226	(PTRACE_ARG3_TYPE) SXIP_OFFSET, read_register (SXIP_REGNUM));
c906108c	227	ptrace (6, inferior_pid,
c5aa993b	228	(PTRACE_ARG3_TYPE) SNIP_OFFSET, read_register (SNIP_REGNUM));
c906108c	229	ptrace (6, inferior_pid,
c5aa993b	230	(PTRACE_ARG3_TYPE) SFIP_OFFSET, read_register (SFIP_REGNUM));
c906108c	231	if (target_is_m88110)
c5aa993b JM	232	{
	233	for (regno = X0_REGNUM; regno < NUM_REGS; regno++)
	234	{
	235	X_REGISTER_RAW_TYPE xval;
	236
	237	read_register_bytes (REGISTER_BYTE (regno), (char *) &xval,
	238	sizeof (X_REGISTER_RAW_TYPE));
	239	regaddr = XREGADDR (regno);
	240	ptrace (6, inferior_pid, (PTRACE_ARG3_TYPE) regaddr, xval.w1);
	241	ptrace (6, inferior_pid, (PTRACE_ARG3_TYPE) (regaddr + 4), xval.w2);
	242	ptrace (6, inferior_pid, (PTRACE_ARG3_TYPE) (regaddr + 8), xval.w3);
	243	ptrace (6, inferior_pid, (PTRACE_ARG3_TYPE) (regaddr + 12), xval.w4);
	244	}
	245	}
c906108c SS	246	}
	247	}
	248
	249	/* blockend is the address of the end of the user structure */
	250
fba45db2	251	m88k_register_u_addr (int blockend, int regnum)
c906108c SS	252	{
	253	struct USER u;
	254	int ustart = blockend - sizeof (struct USER);
	255
	256	if (regnum < PSR_REGNUM)
c5aa993b JM	257	return (ustart + ((int) &u.pt_r0 - (int) &u) +
c5aa993b JM	258	REGISTER_SIZE * regnum);
c906108c	259	else if (regnum == PSR_REGNUM)
c5aa993b	260	return (ustart + ((int) &u.pt_psr) - (int) &u);
c906108c	261	else if (regnum == FPSR_REGNUM)
c5aa993b	262	return (ustart + ((int) &u.pt_fpsr) - (int) &u);
c906108c	263	else if (regnum == FPCR_REGNUM)
c5aa993b	264	return (ustart + ((int) &u.pt_fpcr) - (int) &u);
c906108c	265	else if (regnum == SXIP_REGNUM)
c5aa993b	266	return (ustart + SXIP_OFFSET);
c906108c	267	else if (regnum == SNIP_REGNUM)
c5aa993b	268	return (ustart + SNIP_OFFSET);
c906108c	269	else if (regnum == SFIP_REGNUM)
c5aa993b JM	270	return (ustart + SFIP_OFFSET);
	271	else if (target_is_m88110)
	272	return (ustart + ((int) &u.pt_x0 - (int) &u) + /* Must be X register */
	273	sizeof (u.pt_x0) * (regnum - X0_REGNUM));
c906108c	274	else
c5aa993b	275	return (blockend + REGISTER_SIZE * regnum);
c906108c SS	276	}
	277
	278	#ifdef USE_PROC_FS
	279
	280	#include <sys/procfs.h>
	281
c60c0f5f MS	282	/* Prototypes for supply_gregset etc. */
	283	#include "gregset.h"
	284
c906108c	285	/* Given a pointer to a general register set in /proc format (gregset_t *),
c5aa993b JM	286	unpack the register contents and supply them as gdb's idea of the current
c5aa993b JM	287	register values. */
c906108c SS	288
c906108c SS	289	void
fba45db2	290	supply_gregset (gregset_t *gregsetp)
c906108c	291	{
c5aa993b JM	292	register int regi;
	293	register greg_t regp = (greg_t ) gregsetp;
	294
	295	for (regi = 0; regi <= SP_REGNUM; regi++)
	296	supply_register (regi, (char *) (regp + regi));
	297
	298	supply_register (SXIP_REGNUM, (char *) (regp + R_XIP));
	299	supply_register (SNIP_REGNUM, (char *) (regp + R_NIP));
	300	supply_register (SFIP_REGNUM, (char *) (regp + R_FIP));
	301	supply_register (PSR_REGNUM, (char *) (regp + R_PSR));
	302	supply_register (FPSR_REGNUM, (char *) (regp + R_FPSR));
	303	supply_register (FPCR_REGNUM, (char *) (regp + R_FPCR));
c906108c SS	304	}
	305
	306	void
fba45db2	307	fill_gregset (gregset_t *gregsetp, int regno)
c906108c	308	{
c5aa993b JM	309	int regi;
	310	register greg_t regp = (greg_t ) gregsetp;
	311
	312	for (regi = 0; regi <= R_R31; regi++)
	313	if ((regno == -1) \|\| (regno == regi))
	314	(regp + regi) = (int *) &registers[REGISTER_BYTE (regi)];
	315
	316	if ((regno == -1) \|\| (regno == SXIP_REGNUM))
	317	(regp + R_XIP) = (int *) &registers[REGISTER_BYTE (SXIP_REGNUM)];
	318	if ((regno == -1) \|\| (regno == SNIP_REGNUM))
	319	(regp + R_NIP) = (int *) &registers[REGISTER_BYTE (SNIP_REGNUM)];
	320	if ((regno == -1) \|\| (regno == SFIP_REGNUM))
	321	(regp + R_FIP) = (int *) &registers[REGISTER_BYTE (SFIP_REGNUM)];
	322	if ((regno == -1) \|\| (regno == PSR_REGNUM))
	323	(regp + R_PSR) = (int *) &registers[REGISTER_BYTE (PSR_REGNUM)];
	324	if ((regno == -1) \|\| (regno == FPSR_REGNUM))
	325	(regp + R_FPSR) = (int *) &registers[REGISTER_BYTE (FPSR_REGNUM)];
	326	if ((regno == -1) \|\| (regno == FPCR_REGNUM))
	327	(regp + R_FPCR) = (int *) &registers[REGISTER_BYTE (FPCR_REGNUM)];
c906108c SS	328	}
	329
	330	#endif /* USE_PROC_FS */
	331
	332	/* This support adds the equivalent of adb's % command. When
	333	the `add-shared-symbol-files' command is given, this routine scans
	334	the dynamic linker's link map and reads the minimal symbols
	335	from each shared object file listed in the map. */
	336
c5aa993b JM	337	struct link_map
c5aa993b JM	338	{
c906108c SS	339	unsigned long l_addr; /* address at which object is mapped */
	340	char l_name; / full name of loaded object */
	341	void l_ld; / dynamic structure of object */
	342	struct link_map l_next; / next link object */
	343	struct link_map l_prev; / previous link object */
	344	};
	345
	346	#define LINKS_MAP_POINTER "_ld_tail"
	347	#define LIBC_FILE "/usr/lib/libc.so.1"
	348	#define SHARED_OFFSET 0xf0001000
	349
	350	#ifndef PATH_MAX
	351	#define PATH_MAX 1023 /* maximum size of path name on OS */
	352	#endif
	353
	354	void
fba45db2	355	add_shared_symbol_files (void)
c906108c SS	356	{
	357	void *desc;
	358	struct link_map ld_map, lm, lms;
c5aa993b	359	struct minimal_symbol *minsym;
c906108c SS	360	struct objfile *objfile;
	361	char *path_name;
	362
c5aa993b	363	if (!inferior_pid)
c906108c SS	364	{
	365	warning ("The program has not yet been started.");
	366	return;
	367	}
	368
2df3850c	369	objfile = symbol_file_add (LIBC_FILE, 0, NULL, 0, OBJF_READNOW);
c906108c SS	370	minsym = lookup_minimal_symbol (LINKS_MAP_POINTER, objfile);
	371
	372	ld_map = (struct link_map *)
c5aa993b	373	read_memory_integer (((int) SYMBOL_VALUE_ADDRESS (minsym) + SHARED_OFFSET), 4);
c906108c SS	374	lm = ld_map;
	375	while (lm)
	376	{
	377	int local_errno = 0;
	378
c5aa993b	379	read_memory ((CORE_ADDR) lm, (char *) &lms, sizeof (struct link_map));
c906108c SS	380	if (lms.l_name)
c906108c SS	381	{
c5aa993b JM	382	if (target_read_string ((CORE_ADDR) lms.l_name, &path_name,
c5aa993b JM	383	PATH_MAX, &local_errno))
c906108c	384	{
2acceee2 JM	385	struct section_addr_info section_addrs;
2acceee2 JM	386	memset (&section_addrs, 0, sizeof (section_addrs));
a034fba4 EZ	387	section_addrs.other[0].addr = lms.l_addr;
a034fba4 EZ	388	section_addrs.other[0].name = ".text";
2df3850c	389	symbol_file_add (path_name, 1, &section_addrs, 0, 0);
c5aa993b	390	free (path_name);
c906108c SS	391	}
	392	}
	393	/* traverse links in reverse order so that we get the
c5aa993b	394	the symbols the user actually gets. */
c906108c SS	395	lm = lms.l_prev;
	396	}
	397
	398	/* Getting new symbols may change our opinion about what is
	399	frameless. */
	400	reinit_frame_cache ();
	401	}
	402
	403	#if defined(_ES_MP)
	404
	405	#include <sys/regset.h>
	406
	407	unsigned int
fba45db2	408	m88k_harris_core_register_addr (int regno, int reg_ptr)
c906108c	409	{
c5aa993b JM	410	unsigned int word_offset;
	411
	412	switch (regno)
	413	{
	414	case PSR_REGNUM:
	415	word_offset = R_EPSR;
	416	break;
	417	case FPSR_REGNUM:
	418	word_offset = R_FPSR;
	419	break;
	420	case FPCR_REGNUM:
	421	word_offset = R_FPCR;
	422	break;
	423	case SXIP_REGNUM:
	424	word_offset = R_EXIP;
	425	break;
	426	case SNIP_REGNUM:
	427	word_offset = R_ENIP;
	428	break;
	429	case SFIP_REGNUM:
	430	word_offset = R_EFIP;
	431	break;
	432	default:
	433	if (regno <= FP_REGNUM)
	434	word_offset = regno;
	435	else
	436	word_offset = ((regno - X0_REGNUM) * 4);
	437	}
	438	return (word_offset * 4);
c906108c SS	439	}
	440
	441	#endif /* _ES_MP */
	442
	443	void
fba45db2	444	_initialize_m88k_nat (void)
c906108c SS	445	{
c906108c SS	446	#ifdef _ES_MP
c5aa993b	447	/* Enable 88110 support, as we don't support the 88100 under ES/MP. */
c906108c	448
c5aa993b	449	target_is_m88110 = 1;
c906108c	450	#elif defined(_CX_UX)
c5aa993b JM	451	/* Determine whether we're running on an 88100 or an 88110. */
c5aa993b JM	452	target_is_m88110 = (sinfo (SYSMACHINE, 0) == SYS5800);
c906108c SS	453	#endif /* _CX_UX */
	454	}
	455
	456	#ifdef _ES_MP
	457	/* Given a pointer to a general register set in /proc format (gregset_t *),
	458	unpack the register contents and supply them as gdb's idea of the current
	459	register values. */
	460
	461	void
fba45db2	462	supply_gregset (gregset_t *gregsetp)
c906108c SS	463	{
	464	register int regi;
	465	register greg_t regp = (greg_t ) gregsetp;
	466
c5aa993b	467	for (regi = 0; regi < R_R31; regi++)
c906108c SS	468	{
	469	supply_register (regi, (char *) (regp + regi));
	470	}
c5aa993b	471	supply_register (PSR_REGNUM, (char *) (regp + R_EPSR));
c906108c SS	472	supply_register (FPSR_REGNUM, (char *) (regp + R_FPSR));
	473	supply_register (FPCR_REGNUM, (char *) (regp + R_FPCR));
	474	supply_register (SXIP_REGNUM, (char *) (regp + R_EXIP));
	475	supply_register (SNIP_REGNUM, (char *) (regp + R_ENIP));
	476	supply_register (SFIP_REGNUM, (char *) (regp + R_EFIP));
	477	}
	478
	479	/* Given a pointer to a floating point register set in /proc format
	480	(fpregset_t *), unpack the register contents and supply them as gdb's
	481	idea of the current floating point register values. */
	482
c5aa993b	483	void
fba45db2	484	supply_fpregset (fpregset_t *fpregsetp)
c906108c SS	485	{
	486	register int regi;
	487	char *from;
c5aa993b JM	488
c5aa993b JM	489	for (regi = FP0_REGNUM; regi <= FPLAST_REGNUM; regi++)
c906108c	490	{
c5aa993b	491	from = (char ) &((fpregsetp)[regi - FP0_REGNUM]);
c906108c SS	492	supply_register (regi, from);
	493	}
	494	}
	495
	496	#endif /* _ES_MP */
	497
	498	#ifdef _CX_UX
	499
	500	#include <sys/regset.h>
	501
c5aa993b JM	502	unsigned int
c5aa993b JM	503	m88k_harris_core_register_addr (int regno, int reg_ptr)
c906108c	504	{
c5aa993b JM	505	unsigned int word_offset;
	506
	507	switch (regno)
	508	{
	509	case PSR_REGNUM:
	510	word_offset = R_PSR;
	511	break;
	512	case FPSR_REGNUM:
	513	word_offset = R_FPSR;
	514	break;
	515	case FPCR_REGNUM:
	516	word_offset = R_FPCR;
	517	break;
	518	case SXIP_REGNUM:
	519	word_offset = R_XIP;
	520	break;
	521	case SNIP_REGNUM:
	522	word_offset = R_NIP;
	523	break;
	524	case SFIP_REGNUM:
	525	word_offset = R_FIP;
	526	break;
	527	default:
	528	if (regno <= FP_REGNUM)
	529	word_offset = regno;
	530	else
	531	word_offset = ((regno - X0_REGNUM) * 4) + R_X0;
	532	}
	533	return (word_offset * 4);
c906108c SS	534	}
	535
	536	#endif /* _CX_UX */