Initial creation of sourceware repository

1 files changed, 0 insertions, 846 deletions

diff --git a/gdb/symm-nat.c b/gdb/symm-nat.c
deleted file mode 100644
index 0461066..0000000
--- a/gdb/symm-nat.c
+++ /dev/null
@@ -1,846 +0,0 @@
-/* Sequent Symmetry host interface, for GDB when running under Unix.
-   Copyright 1986, 1987, 1989, 1991, 1992, 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.  */
-
-/* FIXME, some 387-specific items of use taken from i387-tdep.c -- ought to be
-   merged back in. */
-
-#include "defs.h"
-#include "frame.h"
-#include "inferior.h"
-#include "symtab.h"
-#include "target.h"
-
-/* FIXME: What is the _INKERNEL define for?  */
-#define _INKERNEL
-#include <signal.h>
-#undef _INKERNEL
-#include <sys/wait.h>
-#include <sys/param.h>
-#include <sys/user.h>
-#include <sys/proc.h>
-#include <sys/dir.h>
-#include <sys/ioctl.h>
-#include "gdb_stat.h"
-#ifdef _SEQUENT_
-#include <sys/ptrace.h>
-#else
-/* Dynix has only machine/ptrace.h, which is already included by sys/user.h  */
-/* Dynix has no mptrace call */
-#define mptrace ptrace
-#endif
-#include "gdbcore.h"
-#include <fcntl.h>
-#include <sgtty.h>
-#define TERMINAL struct sgttyb
-
-#include "gdbcore.h"
-
-void
-store_inferior_registers(regno)
-int regno;
-{
-  struct pt_regset regs;
-  int i;
-  extern char registers[];
-
-  /* FIXME: Fetching the registers is a kludge to initialize all elements
-     in the fpu and fpa status. This works for normal debugging, but
-     might cause problems when calling functions in the inferior.
-     At least fpu_control and fpa_pcr (probably more) should be added 
-     to the registers array to solve this properly.  */
-  mptrace (XPT_RREGS, inferior_pid, (PTRACE_ARG3_TYPE) &regs, 0);
-
-  regs.pr_eax = *(int *)&registers[REGISTER_BYTE(0)];
-  regs.pr_ebx = *(int *)&registers[REGISTER_BYTE(5)];
-  regs.pr_ecx = *(int *)&registers[REGISTER_BYTE(2)];
-  regs.pr_edx = *(int *)&registers[REGISTER_BYTE(1)];
-  regs.pr_esi = *(int *)&registers[REGISTER_BYTE(6)];
-  regs.pr_edi = *(int *)&registers[REGISTER_BYTE(7)];
-  regs.pr_esp = *(int *)&registers[REGISTER_BYTE(14)];
-  regs.pr_ebp = *(int *)&registers[REGISTER_BYTE(15)];
-  regs.pr_eip = *(int *)&registers[REGISTER_BYTE(16)];
-  regs.pr_flags = *(int *)&registers[REGISTER_BYTE(17)];
-  for (i = 0; i < 31; i++)
-    {
-      regs.pr_fpa.fpa_regs[i] =
-	*(int *)&registers[REGISTER_BYTE(FP1_REGNUM+i)];
-    }
-  memcpy (regs.pr_fpu.fpu_stack[0], &registers[REGISTER_BYTE(ST0_REGNUM)], 10);
-  memcpy (regs.pr_fpu.fpu_stack[1], &registers[REGISTER_BYTE(ST1_REGNUM)], 10);
-  memcpy (regs.pr_fpu.fpu_stack[2], &registers[REGISTER_BYTE(ST2_REGNUM)], 10);
-  memcpy (regs.pr_fpu.fpu_stack[3], &registers[REGISTER_BYTE(ST3_REGNUM)], 10);
-  memcpy (regs.pr_fpu.fpu_stack[4], &registers[REGISTER_BYTE(ST4_REGNUM)], 10);
-  memcpy (regs.pr_fpu.fpu_stack[5], &registers[REGISTER_BYTE(ST5_REGNUM)], 10);
-  memcpy (regs.pr_fpu.fpu_stack[6], &registers[REGISTER_BYTE(ST6_REGNUM)], 10);
-  memcpy (regs.pr_fpu.fpu_stack[7], &registers[REGISTER_BYTE(ST7_REGNUM)], 10);
-  mptrace (XPT_WREGS, inferior_pid, (PTRACE_ARG3_TYPE) &regs, 0);
-}
-
-void
-fetch_inferior_registers (regno)
-     int regno;
-{
-  int i;
-  struct pt_regset regs;
-  extern char registers[];
-
-  registers_fetched ();
-
-  mptrace (XPT_RREGS, inferior_pid, (PTRACE_ARG3_TYPE) &regs, 0);
-  *(int *)&registers[REGISTER_BYTE(EAX_REGNUM)] = regs.pr_eax;
-  *(int *)&registers[REGISTER_BYTE(EBX_REGNUM)] = regs.pr_ebx;
-  *(int *)&registers[REGISTER_BYTE(ECX_REGNUM)] = regs.pr_ecx;
-  *(int *)&registers[REGISTER_BYTE(EDX_REGNUM)] = regs.pr_edx;
-  *(int *)&registers[REGISTER_BYTE(ESI_REGNUM)] = regs.pr_esi;
-  *(int *)&registers[REGISTER_BYTE(EDI_REGNUM)] = regs.pr_edi;
-  *(int *)&registers[REGISTER_BYTE(EBP_REGNUM)] = regs.pr_ebp;
-  *(int *)&registers[REGISTER_BYTE(ESP_REGNUM)] = regs.pr_esp;
-  *(int *)&registers[REGISTER_BYTE(EIP_REGNUM)] = regs.pr_eip;
-  *(int *)&registers[REGISTER_BYTE(EFLAGS_REGNUM)] = regs.pr_flags;
-  for (i = 0; i < FPA_NREGS; i++)
-    {
-      *(int *)&registers[REGISTER_BYTE(FP1_REGNUM+i)] =
-	regs.pr_fpa.fpa_regs[i];
-    }
-  memcpy (&registers[REGISTER_BYTE(ST0_REGNUM)], regs.pr_fpu.fpu_stack[0], 10);
-  memcpy (&registers[REGISTER_BYTE(ST1_REGNUM)], regs.pr_fpu.fpu_stack[1], 10);
-  memcpy (&registers[REGISTER_BYTE(ST2_REGNUM)], regs.pr_fpu.fpu_stack[2], 10);
-  memcpy (&registers[REGISTER_BYTE(ST3_REGNUM)], regs.pr_fpu.fpu_stack[3], 10);
-  memcpy (&registers[REGISTER_BYTE(ST4_REGNUM)], regs.pr_fpu.fpu_stack[4], 10);
-  memcpy (&registers[REGISTER_BYTE(ST5_REGNUM)], regs.pr_fpu.fpu_stack[5], 10);
-  memcpy (&registers[REGISTER_BYTE(ST6_REGNUM)], regs.pr_fpu.fpu_stack[6], 10);
-  memcpy (&registers[REGISTER_BYTE(ST7_REGNUM)], regs.pr_fpu.fpu_stack[7], 10);
-}
-
-/* FIXME:  This should be merged with i387-tdep.c as well. */
-static
-print_fpu_status(ep)
-struct pt_regset ep;
-{
-    int i;
-    int bothstatus;
-    int top;
-    int fpreg;
-    unsigned char *p;
-    
-    printf_unfiltered("80387:");
-    if (ep.pr_fpu.fpu_ip == 0) {
-	printf_unfiltered(" not in use.\n");
-	return;
-    } else {
-	printf_unfiltered("\n");
-    }
-    if (ep.pr_fpu.fpu_status != 0) {
-	print_387_status_word (ep.pr_fpu.fpu_status);
-    }
-    print_387_control_word (ep.pr_fpu.fpu_control);
-    printf_unfiltered ("last exception: ");
-    printf_unfiltered ("opcode 0x%x; ", ep.pr_fpu.fpu_rsvd4);
-    printf_unfiltered ("pc 0x%x:0x%x; ", ep.pr_fpu.fpu_cs, ep.pr_fpu.fpu_ip);
-    printf_unfiltered ("operand 0x%x:0x%x\n", ep.pr_fpu.fpu_data_offset, ep.pr_fpu.fpu_op_sel);
-    
-    top = (ep.pr_fpu.fpu_status >> 11) & 7;
-    
-    printf_unfiltered ("regno  tag  msb              lsb  value\n");
-    for (fpreg = 7; fpreg >= 0; fpreg--) 
-	{
-	    double val;
-	    
-	    printf_unfiltered ("%s %d: ", fpreg == top ? "=>" : "  ", fpreg);
-	    
-	    switch ((ep.pr_fpu.fpu_tag >> (fpreg * 2)) & 3) 
-		{
-		case 0: printf_unfiltered ("valid "); break;
-		case 1: printf_unfiltered ("zero  "); break;
-		case 2: printf_unfiltered ("trap  "); break;
-		case 3: printf_unfiltered ("empty "); break;
-		}
-	    for (i = 9; i >= 0; i--)
-		printf_unfiltered ("%02x", ep.pr_fpu.fpu_stack[fpreg][i]);
-	    
-	    i387_to_double ((char *)ep.pr_fpu.fpu_stack[fpreg], (char *)&val);
-	    printf_unfiltered ("  %g\n", val);
-	}
-    if (ep.pr_fpu.fpu_rsvd1)
-	warning ("rsvd1 is 0x%x\n", ep.pr_fpu.fpu_rsvd1);
-    if (ep.pr_fpu.fpu_rsvd2)
-	warning ("rsvd2 is 0x%x\n", ep.pr_fpu.fpu_rsvd2);
-    if (ep.pr_fpu.fpu_rsvd3)
-	warning ("rsvd3 is 0x%x\n", ep.pr_fpu.fpu_rsvd3);
-    if (ep.pr_fpu.fpu_rsvd5)
-	warning ("rsvd5 is 0x%x\n", ep.pr_fpu.fpu_rsvd5);
-}
-
-
-print_1167_control_word(pcr)
-unsigned int pcr;
-
-{
-    int pcr_tmp;
-
-    pcr_tmp = pcr & FPA_PCR_MODE;
-    printf_unfiltered("\tMODE= %#x; RND= %#x ", pcr_tmp, pcr_tmp & 12);
-    switch (pcr_tmp & 12) {
-    case 0:
-	printf_unfiltered("RN (Nearest Value)");
-	break;
-    case 1:
-	printf_unfiltered("RZ (Zero)");
-	break;
-    case 2:
-	printf_unfiltered("RP (Positive Infinity)");
-	break;
-    case 3:
-	printf_unfiltered("RM (Negative Infinity)");
-	break;
-    }
-    printf_unfiltered("; IRND= %d ", pcr_tmp & 2);
-    if (0 == pcr_tmp & 2) {
-	printf_unfiltered("(same as RND)\n");
-    } else {
-	printf_unfiltered("(toward zero)\n");
-    }
-    pcr_tmp = pcr & FPA_PCR_EM;
-    printf_unfiltered("\tEM= %#x", pcr_tmp);
-    if (pcr_tmp & FPA_PCR_EM_DM) printf_unfiltered(" DM");
-    if (pcr_tmp & FPA_PCR_EM_UOM) printf_unfiltered(" UOM");
-    if (pcr_tmp & FPA_PCR_EM_PM) printf_unfiltered(" PM");
-    if (pcr_tmp & FPA_PCR_EM_UM) printf_unfiltered(" UM");
-    if (pcr_tmp & FPA_PCR_EM_OM) printf_unfiltered(" OM");
-    if (pcr_tmp & FPA_PCR_EM_ZM) printf_unfiltered(" ZM");
-    if (pcr_tmp & FPA_PCR_EM_IM) printf_unfiltered(" IM");
-    printf_unfiltered("\n");
-    pcr_tmp = FPA_PCR_CC;
-    printf_unfiltered("\tCC= %#x", pcr_tmp);
-    if (pcr_tmp & FPA_PCR_20MHZ) printf_unfiltered(" 20MHZ");
-    if (pcr_tmp & FPA_PCR_CC_Z) printf_unfiltered(" Z");
-    if (pcr_tmp & FPA_PCR_CC_C2) printf_unfiltered(" C2");
-
-    /* Dynix defines FPA_PCR_CC_C0 to 0x100 and ptx defines
-       FPA_PCR_CC_C1 to 0x100.  Use whichever is defined and assume
-       the OS knows what it is doing.  */
-#ifdef FPA_PCR_CC_C1
-    if (pcr_tmp & FPA_PCR_CC_C1) printf_unfiltered(" C1");
-#else
-    if (pcr_tmp & FPA_PCR_CC_C0) printf_unfiltered(" C0");
-#endif
-
-    switch (pcr_tmp)
-      {
-      case FPA_PCR_CC_Z:
-	printf_unfiltered(" (Equal)");
-	break;
-#ifdef FPA_PCR_CC_C1
-      case FPA_PCR_CC_C1:
-#else
-      case FPA_PCR_CC_C0:
-#endif
-	printf_unfiltered(" (Less than)");
-	break;
-      case 0:
-	printf_unfiltered(" (Greater than)");
-	break;
-      case FPA_PCR_CC_Z | 
-#ifdef FPA_PCR_CC_C1
-	FPA_PCR_CC_C1
-#else
-	FPA_PCR_CC_C0
-#endif
-	  | FPA_PCR_CC_C2:
-	printf_unfiltered(" (Unordered)");
-	break;
-      default:
-	printf_unfiltered(" (Undefined)");
-	break;
-      }
-    printf_unfiltered("\n");
-    pcr_tmp = pcr & FPA_PCR_AE;
-    printf_unfiltered("\tAE= %#x", pcr_tmp);
-    if (pcr_tmp & FPA_PCR_AE_DE) printf_unfiltered(" DE");
-    if (pcr_tmp & FPA_PCR_AE_UOE) printf_unfiltered(" UOE");
-    if (pcr_tmp & FPA_PCR_AE_PE) printf_unfiltered(" PE");
-    if (pcr_tmp & FPA_PCR_AE_UE) printf_unfiltered(" UE");
-    if (pcr_tmp & FPA_PCR_AE_OE) printf_unfiltered(" OE");
-    if (pcr_tmp & FPA_PCR_AE_ZE) printf_unfiltered(" ZE");
-    if (pcr_tmp & FPA_PCR_AE_EE) printf_unfiltered(" EE");
-    if (pcr_tmp & FPA_PCR_AE_IE) printf_unfiltered(" IE");
-    printf_unfiltered("\n");
-}
-
-print_1167_regs(regs)
-long regs[FPA_NREGS];
-
-{
-    int i;
-
-    union {
-	double	d;
-	long	l[2];
-    } xd;
-    union {
-	float	f;
-	long	l;
-    } xf;
-
-
-    for (i = 0; i < FPA_NREGS; i++) {
-	xf.l = regs[i];
-	printf_unfiltered("%%fp%d: raw= %#x, single= %f", i+1, regs[i], xf.f);
-	if (!(i & 1)) {
-	    printf_unfiltered("\n");
-	} else {
-	    xd.l[1] = regs[i];
-	    xd.l[0] = regs[i+1];
-	    printf_unfiltered(", double= %f\n", xd.d);
-	}
-    }
-}
-
-print_fpa_status(ep)
-struct pt_regset ep;
-
-{
-
-    printf_unfiltered("WTL 1167:");
-    if (ep.pr_fpa.fpa_pcr !=0) {
-	printf_unfiltered("\n");
-	print_1167_control_word(ep.pr_fpa.fpa_pcr);
-	print_1167_regs(ep.pr_fpa.fpa_regs);
-    } else {
-	printf_unfiltered(" not in use.\n");
-    }
-}
-
-#if 0 /* disabled because it doesn't go through the target vector.  */
-i386_float_info ()
-{
-  char ubuf[UPAGES*NBPG];
-  struct pt_regset regset;
-
-  if (have_inferior_p())
-    {
-      PTRACE_READ_REGS (inferior_pid, (PTRACE_ARG3_TYPE) &regset);
-    }
-  else
-    {
-      int corechan = bfd_cache_lookup (core_bfd);
-      if (lseek (corechan, 0, 0) < 0)
-	{
-	  perror ("seek on core file");
-	}
-      if (myread (corechan, ubuf, UPAGES*NBPG) < 0)
-	{
-	  perror ("read on core file");
-	}
-      /* only interested in the floating point registers */
-      regset.pr_fpu = ((struct user *) ubuf)->u_fpusave;
-      regset.pr_fpa = ((struct user *) ubuf)->u_fpasave;
-    }
-  print_fpu_status(regset);
-  print_fpa_status(regset);
-}
-#endif
-
-static volatile int got_sigchld;
-
-/*ARGSUSED*/
-/* This will eventually be more interesting. */
-void
-sigchld_handler(signo)
-	int signo;
-{
-	got_sigchld++;
-}
-
-/*
- * Signals for which the default action does not cause the process
- * to die.  See <sys/signal.h> for where this came from (alas, we
- * can't use those macros directly)
- */
-#ifndef sigmask
-#define sigmask(s) (1 << ((s) - 1))
-#endif
-#define SIGNALS_DFL_SAFE sigmask(SIGSTOP) | sigmask(SIGTSTP) | \
-	sigmask(SIGTTIN) | sigmask(SIGTTOU) | sigmask(SIGCHLD) | \
-	sigmask(SIGCONT) | sigmask(SIGWINCH) | sigmask(SIGPWR) | \
-	sigmask(SIGURG) | sigmask(SIGPOLL)
-
-#ifdef ATTACH_DETACH
-/*
- * Thanks to XPT_MPDEBUGGER, we have to mange child_wait().
- */
-int
-child_wait(pid, status)
-     int pid;
-     struct target_waitstatus *status;
-{
-  int save_errno, rv, xvaloff, saoff, sa_hand;
-  struct pt_stop pt;
-  struct user u;
-  sigset_t set;
-  /* Host signal number for a signal which the inferior terminates with, or
-     0 if it hasn't terminated due to a signal.  */
-  static int death_by_signal = 0;
-#ifdef SVR4_SHARED_LIBS		/* use this to distinguish ptx 2 vs ptx 4 */
-  prstatus_t pstatus;
-#endif
-
-  do {
-    set_sigint_trap();	/* Causes SIGINT to be passed on to the
-			   attached process. */
-    save_errno = errno;
-
-    got_sigchld = 0;
-
-    sigemptyset(&set);
-
-    while (got_sigchld == 0) {
-	    sigsuspend(&set);
-    }
-    
-    clear_sigint_trap();
-
-    rv = mptrace(XPT_STOPSTAT, 0, (char *)&pt, 0);
-    if (-1 == rv) {
-	    printf("XPT_STOPSTAT: errno %d\n", errno); /* DEBUG */
-	    continue;
-    }
-
-    pid = pt.ps_pid;
-
-    if (pid != inferior_pid) {
-	    /* NOTE: the mystery fork in csh/tcsh needs to be ignored.
-	     * We should not return new children for the initial run
-	     * of a process until it has done the exec.
-	     */
-	    /* inferior probably forked; send it on its way */
-	    rv = mptrace(XPT_UNDEBUG, pid, 0, 0);
-	    if (-1 == rv) {
-		    printf("child_wait: XPT_UNDEBUG: pid %d: %s\n", pid,
-			   safe_strerror(errno));
-	    }
-	    continue;
-    }
-    /* FIXME: Do we deal with fork notification correctly?  */
-    switch (pt.ps_reason) {
-    case PTS_FORK:
-	/* multi proc: treat like PTS_EXEC */
-	    /*
-	     * Pretend this didn't happen, since gdb isn't set up
-	     * to deal with stops on fork.
-	     */
-	    rv = ptrace(PT_CONTSIG, pid, 1, 0);
-	    if (-1 == rv) {
-		    printf("PTS_FORK: PT_CONTSIG: error %d\n", errno);
-	    }
-	    continue;
-    case PTS_EXEC:
-	    /*
-	     * Pretend this is a SIGTRAP.
-	     */
-	    status->kind = TARGET_WAITKIND_STOPPED;
-	    status->value.sig = TARGET_SIGNAL_TRAP;
-	    break;
-    case PTS_EXIT:
-	    /*
-	     * Note: we stop before the exit actually occurs.  Extract
-	     * the exit code from the uarea.  If we're stopped in the
-	     * exit() system call, the exit code will be in
-	     * u.u_ap[0].  An exit due to an uncaught signal will have
-	     * something else in here, see the comment in the default:
-	     * case, below.  Finally,let the process exit.
-	     */
-	    if (death_by_signal)
-	      {
-		status->kind = TARGET_WAITKIND_SIGNALED;
-		status->value.sig = target_signal_from_host (death_by_signal);
-		death_by_signal = 0;
-		break;
-	      }
-	    xvaloff = (unsigned long)&u.u_ap[0] - (unsigned long)&u;
-	    errno = 0;
-	    rv = ptrace(PT_RUSER, pid, (char *)xvaloff, 0);
-	    status->kind = TARGET_WAITKIND_EXITED;
-	    status->value.integer = rv;
-	    /*
-	     * addr & data to mptrace() don't matter here, since
-	     * the process is already dead.
-	     */
-	    rv = mptrace(XPT_UNDEBUG, pid, 0, 0);
-	    if (-1 == rv) {
-		    printf("child_wait: PTS_EXIT: XPT_UNDEBUG: pid %d error %d\n", pid,
-			   errno);
-	    }
-	    break;
-    case PTS_WATCHPT_HIT:
-	    fatal("PTS_WATCHPT_HIT\n");
-	    break;
-    default:
-	    /* stopped by signal */
-	    status->kind = TARGET_WAITKIND_STOPPED;
-	    status->value.sig = target_signal_from_host (pt.ps_reason);
-	    death_by_signal = 0;
-
-	    if (0 == (SIGNALS_DFL_SAFE & sigmask(pt.ps_reason))) {
-		    break;
-	    }
-	    /* else default action of signal is to die */
-#ifdef SVR4_SHARED_LIBS
-	    rv = ptrace(PT_GET_PRSTATUS, pid, (char *)&pstatus, 0);
-	    if (-1 == rv)
-		error("child_wait: signal %d PT_GET_PRSTATUS: %s\n",
-			pt.ps_reason, safe_strerror(errno));
-	    if (pstatus.pr_cursig != pt.ps_reason) {
-		printf("pstatus signal %d, pt signal %d\n",
-			pstatus.pr_cursig, pt.ps_reason);
-	    }
-	    sa_hand = (int)pstatus.pr_action.sa_handler;
-#else
-	    saoff = (unsigned long)&u.u_sa[0] - (unsigned long)&u;
-	    saoff += sizeof(struct sigaction) * (pt.ps_reason - 1);
-	    errno = 0;
-	    sa_hand = ptrace(PT_RUSER, pid, (char *)saoff, 0);
-	    if (errno)
-		    error("child_wait: signal %d: RUSER: %s\n",
-			   pt.ps_reason, safe_strerror(errno));
-#endif
-	    if ((int)SIG_DFL == sa_hand) {
-		    /* we will be dying */
-		    death_by_signal = pt.ps_reason;
-	    }
-	    break;
-    }
-
-  } while (pid != inferior_pid); /* Some other child died or stopped */
-
-  return pid;
-}
-#else /* !ATTACH_DETACH */
-/*
- * Simple child_wait() based on inftarg.c child_wait() for use until
- * the MPDEBUGGER child_wait() works properly.  This will go away when
- * that is fixed.
- */
-child_wait (pid, ourstatus)
-     int pid;
-     struct target_waitstatus *ourstatus;
-{
-  int save_errno;
-  int status;
-
-  do {
-    pid = wait (&status);
-    save_errno = errno;
-
-    if (pid == -1)
-      {
-	if (save_errno == EINTR)
-	  continue;
-	fprintf (stderr, "Child process unexpectedly missing: %s.\n",
-		 safe_strerror (save_errno));
-	ourstatus->kind = TARGET_WAITKIND_SIGNALLED;
-	ourstatus->value.sig = TARGET_SIGNAL_UNKNOWN;
-        return -1;
-      }
-  } while (pid != inferior_pid); /* Some other child died or stopped */
-  store_waitstatus (ourstatus, status);
-  return pid;
-}
-#endif /* ATTACH_DETACH */
-
-
-
-/* This function simply calls ptrace with the given arguments.  
-   It exists so that all calls to ptrace are isolated in this 
-   machine-dependent file. */
-int
-call_ptrace (request, pid, addr, data)
-     int request, pid;
-     PTRACE_ARG3_TYPE addr;
-     int data;
-{
-  return ptrace (request, pid, addr, data);
-}
-
-int
-call_mptrace(request, pid, addr, data)
-	int request, pid;
-	PTRACE_ARG3_TYPE addr;
-	int data;
-{
-	return mptrace(request, pid, addr, data);
-}
-
-#if defined (DEBUG_PTRACE)
-/* For the rest of the file, use an extra level of indirection */
-/* This lets us breakpoint usefully on call_ptrace. */
-#define ptrace call_ptrace
-#define mptrace call_mptrace
-#endif
-
-void
-kill_inferior ()
-{
-  if (inferior_pid == 0)
-    return;
-
-  /* For MPDEBUGGER, don't use PT_KILL, since the child will stop
-     again with a PTS_EXIT.  Just hit him with SIGKILL (so he stops)
-     and detach. */
-
-  kill (inferior_pid, SIGKILL);
-#ifdef ATTACH_DETACH
-  detach(SIGKILL);
-#else /* ATTACH_DETACH */
-  ptrace(PT_KILL, inferior_pid, 0, 0);
-  wait((int *)NULL);
-#endif /* ATTACH_DETACH */
-  target_mourn_inferior ();
-}
-
-/* Resume execution of the inferior process.
-   If STEP is nonzero, single-step it.
-   If SIGNAL is nonzero, give it that signal.  */
-
-void
-child_resume (pid, step, signal)
-     int pid;
-     int step;
-     enum target_signal signal;
-{
-  errno = 0;
-
-  if (pid == -1)
-    pid = inferior_pid;
-
-  /* An address of (PTRACE_ARG3_TYPE)1 tells ptrace to continue from where
-     it was.  (If GDB wanted it to start some other way, we have already
-     written a new PC value to the child.)
-
-     If this system does not support PT_SSTEP, a higher level function will
-     have called single_step() to transmute the step request into a
-     continue request (by setting breakpoints on all possible successor
-     instructions), so we don't have to worry about that here.  */
-
-  if (step)
-    ptrace (PT_SSTEP,     pid, (PTRACE_ARG3_TYPE) 1, signal);
-  else
-    ptrace (PT_CONTSIG, pid, (PTRACE_ARG3_TYPE) 1, signal);
-
-  if (errno)
-    perror_with_name ("ptrace");
-}
-
-#ifdef ATTACH_DETACH
-/* Start debugging the process whose number is PID.  */
-int
-attach (pid)
-     int pid;
-{
-	sigset_t set;
-	int rv;
-
-	rv = mptrace(XPT_DEBUG, pid, 0, 0);
-	if (-1 == rv) {
-		error("mptrace(XPT_DEBUG): %s", safe_strerror(errno));
-	}
-	rv = mptrace(XPT_SIGNAL, pid, 0, SIGSTOP);
-	if (-1 == rv) {
-		error("mptrace(XPT_SIGNAL): %s", safe_strerror(errno));
-	}
-	attach_flag = 1;
-	return pid;
-}
-
-void
-detach (signo)
-     int signo;
-{
-	int rv;
-
-	rv = mptrace(XPT_UNDEBUG, inferior_pid, 1, signo);
-	if (-1 == rv) {
-		error("mptrace(XPT_UNDEBUG): %s", safe_strerror(errno));
-	}
-	attach_flag = 0;
-}
-
-#endif /* ATTACH_DETACH */
-
-/* Default the type of the ptrace transfer to int.  */
-#ifndef PTRACE_XFER_TYPE
-#define PTRACE_XFER_TYPE int
-#endif
-
-
-/* NOTE! I tried using PTRACE_READDATA, etc., to read and write memory
-   in the NEW_SUN_PTRACE case.
-   It ought to be straightforward.  But it appears that writing did
-   not write the data that I specified.  I cannot understand where
-   it got the data that it actually did write.  */
-
-/* Copy LEN bytes to or from inferior's memory starting at MEMADDR
-   to debugger memory starting at MYADDR.   Copy to inferior if
-   WRITE is nonzero.
-  
-   Returns the length copied, which is either the LEN argument or zero.
-   This xfer function does not do partial moves, since child_ops
-   doesn't allow memory operations to cross below us in the target stack
-   anyway.  */
-
-int
-child_xfer_memory (memaddr, myaddr, len, write, target)
-     CORE_ADDR memaddr;
-     char *myaddr;
-     int len;
-     int write;
-     struct target_ops *target;		/* ignored */
-{
-  register int i;
-  /* Round starting address down to longword boundary.  */
-  register CORE_ADDR addr = memaddr & - sizeof (PTRACE_XFER_TYPE);
-  /* Round ending address up; get number of longwords that makes.  */
-  register int count
-    = (((memaddr + len) - addr) + sizeof (PTRACE_XFER_TYPE) - 1)
-      / sizeof (PTRACE_XFER_TYPE);
-  /* Allocate buffer of that many longwords.  */
-  register PTRACE_XFER_TYPE *buffer
-    = (PTRACE_XFER_TYPE *) alloca (count * sizeof (PTRACE_XFER_TYPE));
-
-  if (write)
-    {
-      /* Fill start and end extra bytes of buffer with existing memory data.  */
-
-      if (addr != memaddr || len < (int) sizeof (PTRACE_XFER_TYPE)) {
-	/* Need part of initial word -- fetch it.  */
-        buffer[0] = ptrace (PT_RTEXT, inferior_pid, (PTRACE_ARG3_TYPE) addr,
-			    0);
-      }
-
-      if (count > 1)		/* FIXME, avoid if even boundary */
-	{
-	  buffer[count - 1]
-	    = ptrace (PT_RTEXT, inferior_pid,
-		      ((PTRACE_ARG3_TYPE)
-		       (addr + (count - 1) * sizeof (PTRACE_XFER_TYPE))),
-		      0);
-	}
-
-      /* Copy data to be written over corresponding part of buffer */
-
-      memcpy ((char *) buffer + (memaddr & (sizeof (PTRACE_XFER_TYPE) - 1)),
-	      myaddr,
-	      len);
-
-      /* Write the entire buffer.  */
-
-      for (i = 0; i < count; i++, addr += sizeof (PTRACE_XFER_TYPE))
-	{
-	  errno = 0;
-	  ptrace (PT_WDATA, inferior_pid, (PTRACE_ARG3_TYPE) addr,
-		  buffer[i]);
-	  if (errno)
-	    {
-	      /* Using the appropriate one (I or D) is necessary for
-		 Gould NP1, at least.  */
-	      errno = 0;
-	      ptrace (PT_WTEXT, inferior_pid, (PTRACE_ARG3_TYPE) addr,
-		      buffer[i]);
-	    }
-	  if (errno)
-	    return 0;
-	}
-    }
-  else
-    {
-      /* Read all the longwords */
-      for (i = 0; i < count; i++, addr += sizeof (PTRACE_XFER_TYPE))
-	{
-	  errno = 0;
-	  buffer[i] = ptrace (PT_RTEXT, inferior_pid,
-			      (PTRACE_ARG3_TYPE) addr, 0);
-	  if (errno)
-	    return 0;
-	  QUIT;
-	}
-
-      /* Copy appropriate bytes out of the buffer.  */
-      memcpy (myaddr,
-	      (char *) buffer + (memaddr & (sizeof (PTRACE_XFER_TYPE) - 1)),
-	      len);
-    }
-  return len;
-}
-
-
-void
-_initialize_symm_nat ()
-{
-#ifdef ATTACH_DETACH
-/*
- * the MPDEBUGGER is necessary for process tree debugging and attach
- * to work, but it alters the behavior of debugged processes, so other
- * things (at least child_wait()) will have to change to accomodate
- * that.
- *
- * Note that attach is not implemented in dynix 3, and not in ptx
- * until version 2.1 of the OS.
- */
-	int rv;
-	sigset_t set;
-	struct sigaction sact;
-
-	rv = mptrace(XPT_MPDEBUGGER, 0, 0, 0);
-	if (-1 == rv) {
-		fatal("_initialize_symm_nat(): mptrace(XPT_MPDEBUGGER): %s",
-		      safe_strerror(errno));
-	}
-
-	/*
-	 * Under MPDEBUGGER, we get SIGCLHD when a traced process does
-	 * anything of interest.
-	 */
-
-	/*
-	 * Block SIGCHLD.  We leave it blocked all the time, and then
-	 * call sigsuspend() in child_wait() to wait for the child
-	 * to do something.  None of these ought to fail, but check anyway.
-	 */
-	sigemptyset(&set);
-	rv = sigaddset(&set, SIGCHLD);
-	if (-1 == rv) {
-		fatal("_initialize_symm_nat(): sigaddset(SIGCHLD): %s",
-		      safe_strerror(errno));
-	}
-	rv = sigprocmask(SIG_BLOCK, &set, (sigset_t *)NULL);
-	if (-1 == rv) {
-		fatal("_initialize_symm_nat(): sigprocmask(SIG_BLOCK): %s",
-		      safe_strerror(errno));
-	}
-
-	sact.sa_handler = sigchld_handler;
-	sigemptyset(&sact.sa_mask);
-	sact.sa_flags = SA_NOCLDWAIT; /* keep the zombies away */
-	rv = sigaction(SIGCHLD, &sact, (struct sigaction *)NULL);
-	if (-1 == rv) {
-		fatal("_initialize_symm_nat(): sigaction(SIGCHLD): %s",
-		      safe_strerror(errno));
-	}
-#endif
-}