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-rw-r--r--gdb/symm-nat.c902
1 files changed, 0 insertions, 902 deletions
diff --git a/gdb/symm-nat.c b/gdb/symm-nat.c
deleted file mode 100644
index d6867774310..00000000000
--- a/gdb/symm-nat.c
+++ /dev/null
@@ -1,902 +0,0 @@
-/* Sequent Symmetry host interface, for GDB when running under Unix.
- Copyright 1986, 1987, 1989, 1991, 1992, 1993, 1994, 1995, 1999, 2000,
- 2001
- 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"
-#include "regcache.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 (int regno)
-{
- struct pt_regset regs;
- int i;
-
- /* 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, PIDGET (inferior_ptid), (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, PIDGET (inferior_ptid), (PTRACE_ARG3_TYPE) & regs, 0);
-}
-
-void
-fetch_inferior_registers (int regno)
-{
- int i;
- struct pt_regset regs;
-
- registers_fetched ();
-
- mptrace (XPT_RREGS, PIDGET (inferior_ptid), (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 (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 (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 (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 (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 (void)
-{
- char ubuf[UPAGES * NBPG];
- struct pt_regset regset;
-
- if (have_inferior_p ())
- {
- PTRACE_READ_REGS (PIDGET (inferior_ptid), (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 (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().
- */
-ptid_t
-child_wait (ptid_t ptid, 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
- int pid = PIDGET (ptid);
-
- 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 != PIDGET (inferior_ptid))
- {
- /* 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:
- internal_error (__FILE__, __LINE__,
- "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 != PIDGET (inferior_ptid)); /* Some other child died or stopped */
-
- return pid_to_ptid (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.
- */
-ptid_t
-child_wait (ptid_t ptid, struct target_waitstatus *ourstatus)
-{
- int save_errno;
- int status;
- int pid = PIDGET (ptid);
-
- 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 pid_to_ptid (-1);
- }
- }
- while (pid != PIDGET (inferior_ptid)); /* Some other child died or stopped */
- store_waitstatus (ourstatus, status);
- return pid_to_ptid (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 (int request, int pid, PTRACE_ARG3_TYPE addr, int data)
-{
- return ptrace (request, pid, addr, data);
-}
-
-int
-call_mptrace (int request, int 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 (void)
-{
- if (ptid_equal (inferior_ptid, null_ptid))
- 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 (PIDGET (inferior_ptid), SIGKILL);
-#ifdef ATTACH_DETACH
- detach (SIGKILL);
-#else /* ATTACH_DETACH */
- ptrace (PT_KILL, PIDGET (inferior_ptid), 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 (ptid_t ptid, int step, enum target_signal signal)
-{
- int pid = PIDGET (ptid);
-
- errno = 0;
-
- if (pid == -1)
- pid = PIDGET (inferior_ptid);
-
- /* 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 (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 (int signo)
-{
- int rv;
-
- rv = mptrace (XPT_UNDEBUG, PIDGET (inferior_ptid), 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. TARGET is ignored.
-
- 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 (CORE_ADDR memaddr, char *myaddr, int len, int write,
- struct mem_attrib *attrib,
- struct target_ops *target)
-{
- register int i;
- /* Round starting address down to longword boundary. */
- register CORE_ADDR addr = memaddr & -(CORE_ADDR) 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. */
- /* FIXME (alloca): This code, cloned from infptrace.c, is unsafe
- because it uses alloca to allocate a buffer of arbitrary size.
- For very large xfers, this could crash GDB's stack. */
- 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, PIDGET (inferior_ptid), (PTRACE_ARG3_TYPE) addr,
- 0);
- }
-
- if (count > 1) /* FIXME, avoid if even boundary */
- {
- buffer[count - 1]
- = ptrace (PT_RTEXT, PIDGET (inferior_ptid),
- ((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, PIDGET (inferior_ptid), (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, PIDGET (inferior_ptid), (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, PIDGET (inferior_ptid),
- (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 (void)
-{
-#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)
- {
- internal_error (__FILE__, __LINE__,
- "_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)
- {
- internal_error (__FILE__, __LINE__,
- "_initialize_symm_nat(): sigaddset(SIGCHLD): %s",
- safe_strerror (errno));
- }
- rv = sigprocmask (SIG_BLOCK, &set, (sigset_t *) NULL);
- if (-1 == rv)
- {
- internal_error (__FILE__, __LINE__,
- "_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)
- {
- internal_error (__FILE__, __LINE__,
- "_initialize_symm_nat(): sigaction(SIGCHLD): %s",
- safe_strerror (errno));
- }
-#endif
-}
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