From: Miles Bader <miles@gnu.ai.mit.edu>
* gnu-nat.c, gnu-nat.h, msg.defs, exc_request.defs, i386gnu-nat.c,
msg_reply.defs, notify.defs, process_reply.defs, reply_mig_hack.awk,
config/nm-gnu.h, config/i386/{i386gnu.mh, i386gnu.mt, nm-gnu.h,
m-i386gnu.h, xm-i386gnu.h}: New files for GNU hurd.
1996-04-08 13:50:30 +08:00
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|
/* Low level interface to I386 running the GNU Hurd
|
1996-07-17 14:03:26 +08:00
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|
Copyright (C) 1992, 1995, 1996 Free Software Foundation, Inc.
|
From: Miles Bader <miles@gnu.ai.mit.edu>
* gnu-nat.c, gnu-nat.h, msg.defs, exc_request.defs, i386gnu-nat.c,
msg_reply.defs, notify.defs, process_reply.defs, reply_mig_hack.awk,
config/nm-gnu.h, config/i386/{i386gnu.mh, i386gnu.mt, nm-gnu.h,
m-i386gnu.h, xm-i386gnu.h}: New files for GNU hurd.
1996-04-08 13:50:30 +08:00
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This file is part of GDB.
|
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|
This program is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 2 of the License, or
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(at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program; if not, write to the Free Software
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Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */
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|
#include "defs.h"
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|
#include "inferior.h"
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|
#include "floatformat.h"
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|
#include <stdio.h>
|
1996-07-17 14:03:26 +08:00
|
|
|
|
#include <errno.h>
|
From: Miles Bader <miles@gnu.ai.mit.edu>
* gnu-nat.c, gnu-nat.h, msg.defs, exc_request.defs, i386gnu-nat.c,
msg_reply.defs, notify.defs, process_reply.defs, reply_mig_hack.awk,
config/nm-gnu.h, config/i386/{i386gnu.mh, i386gnu.mt, nm-gnu.h,
m-i386gnu.h, xm-i386gnu.h}: New files for GNU hurd.
1996-04-08 13:50:30 +08:00
|
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|
|
#include <mach.h>
|
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|
|
#include <mach/message.h>
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|
#include <mach/exception.h>
|
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|
#include <mach_error.h>
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|
|
#include "gnu-nat.h"
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|
/* Hmmm... Should this not be here?
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|
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|
* Now for i386_float_info() target_has_execution
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|
*/
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|
#include <target.h>
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|
/* @@@ Should move print_387_status() to i387-tdep.c */
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|
extern void print_387_control_word (); /* i387-tdep.h */
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|
|
|
extern void print_387_status_word ();
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|
/* Find offsets to thread states at compile time.
|
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|
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|
* If your compiler does not grok this, calculate offsets
|
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|
* offsets yourself and use them (or get a compatible compiler :-)
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|
*/
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|
#define REG_OFFSET(reg) (int)(&((struct i386_thread_state *)0)->reg)
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|
|
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|
/* at reg_offset[i] is the offset to the i386_thread_state
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* location where the gdb registers[i] is stored.
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*/
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static int reg_offset[] =
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{
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REG_OFFSET(eax), REG_OFFSET(ecx), REG_OFFSET(edx), REG_OFFSET(ebx),
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REG_OFFSET(uesp), REG_OFFSET(ebp), REG_OFFSET(esi), REG_OFFSET(edi),
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REG_OFFSET(eip), REG_OFFSET(efl), REG_OFFSET(cs), REG_OFFSET(ss),
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REG_OFFSET(ds), REG_OFFSET(es), REG_OFFSET(fs), REG_OFFSET(gs)
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};
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|
#define REG_ADDR(state,regnum) ((char *)(state)+reg_offset[regnum])
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/* Fetch COUNT contiguous registers from thread STATE starting from REGNUM
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* Caller knows that the regs handled in one transaction are of same size.
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*/
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|
#define FETCH_REGS(state, regnum, count) \
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memcpy (®isters[REGISTER_BYTE (regnum)], \
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REG_ADDR (state, regnum), \
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count * REGISTER_RAW_SIZE (regnum))
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/* Store COUNT contiguous registers to thread STATE starting from REGNUM */
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|
#define STORE_REGS(state, regnum, count) \
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memcpy (REG_ADDR (state, regnum), \
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®isters[REGISTER_BYTE (regnum)], \
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count * REGISTER_RAW_SIZE (regnum))
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/*
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* Fetch inferiors registers for gdb.
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* REG specifies which (as gdb views it) register, -1 for all.
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*/
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void
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gnu_fetch_registers (int reg)
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{
|
1996-07-17 14:03:26 +08:00
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struct proc *thread;
|
From: Miles Bader <miles@gnu.ai.mit.edu>
* gnu-nat.c, gnu-nat.h, msg.defs, exc_request.defs, i386gnu-nat.c,
msg_reply.defs, notify.defs, process_reply.defs, reply_mig_hack.awk,
config/nm-gnu.h, config/i386/{i386gnu.mh, i386gnu.mt, nm-gnu.h,
m-i386gnu.h, xm-i386gnu.h}: New files for GNU hurd.
1996-04-08 13:50:30 +08:00
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thread_state_t state;
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|
1996-07-17 14:03:26 +08:00
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inf_update_procs (current_inferior); /* Make sure we know about new threads. */
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thread = inf_tid_to_thread (current_inferior, inferior_pid);
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if (! thread)
|
From: Miles Bader <miles@gnu.ai.mit.edu>
* gnu-nat.c, gnu-nat.h, msg.defs, exc_request.defs, i386gnu-nat.c,
msg_reply.defs, notify.defs, process_reply.defs, reply_mig_hack.awk,
config/nm-gnu.h, config/i386/{i386gnu.mh, i386gnu.mt, nm-gnu.h,
m-i386gnu.h, xm-i386gnu.h}: New files for GNU hurd.
1996-04-08 13:50:30 +08:00
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error ("fetch inferior registers: %d: Invalid thread", inferior_pid);
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state = proc_get_state (thread, 0);
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if (! state)
|
1996-07-17 14:03:26 +08:00
|
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warning ("Couldn't fetch register %s from %s (invalid thread).",
|
1998-12-11 07:07:24 +08:00
|
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|
|
REGISTER_NAME (reg), proc_string (thread));
|
From: Miles Bader <miles@gnu.ai.mit.edu>
* gnu-nat.c, gnu-nat.h, msg.defs, exc_request.defs, i386gnu-nat.c,
msg_reply.defs, notify.defs, process_reply.defs, reply_mig_hack.awk,
config/nm-gnu.h, config/i386/{i386gnu.mh, i386gnu.mt, nm-gnu.h,
m-i386gnu.h, xm-i386gnu.h}: New files for GNU hurd.
1996-04-08 13:50:30 +08:00
|
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|
else if (reg >= 0)
|
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|
|
|
{
|
1998-12-11 07:07:24 +08:00
|
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proc_debug (thread, "fetching register: %s", REGISTER_NAME (reg));
|
From: Miles Bader <miles@gnu.ai.mit.edu>
* gnu-nat.c, gnu-nat.h, msg.defs, exc_request.defs, i386gnu-nat.c,
msg_reply.defs, notify.defs, process_reply.defs, reply_mig_hack.awk,
config/nm-gnu.h, config/i386/{i386gnu.mh, i386gnu.mt, nm-gnu.h,
m-i386gnu.h, xm-i386gnu.h}: New files for GNU hurd.
1996-04-08 13:50:30 +08:00
|
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supply_register (reg, REG_ADDR(state, reg));
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thread->fetched_regs |= (1 << reg);
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}
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else
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{
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proc_debug (thread, "fetching all registers");
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for (reg = 0; reg < NUM_REGS; reg++)
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supply_register (reg, REG_ADDR(state, reg));
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thread->fetched_regs = ~0;
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}
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}
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/* Store our register values back into the inferior.
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* If REG is -1, do this for all registers.
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* Otherwise, REG specifies which register
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*
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|
* On mach3 all registers are always saved in one call.
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*/
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|
void
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gnu_store_registers (reg)
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int reg;
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{
|
1996-07-17 14:03:26 +08:00
|
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|
|
struct proc *thread;
|
From: Miles Bader <miles@gnu.ai.mit.edu>
* gnu-nat.c, gnu-nat.h, msg.defs, exc_request.defs, i386gnu-nat.c,
msg_reply.defs, notify.defs, process_reply.defs, reply_mig_hack.awk,
config/nm-gnu.h, config/i386/{i386gnu.mh, i386gnu.mt, nm-gnu.h,
m-i386gnu.h, xm-i386gnu.h}: New files for GNU hurd.
1996-04-08 13:50:30 +08:00
|
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|
|
int was_aborted, was_valid;
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thread_state_t state;
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|
thread_state_data_t old_state;
|
1996-07-17 14:03:26 +08:00
|
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|
|
inf_update_procs (current_inferior); /* Make sure we know about new threads. */
|
From: Miles Bader <miles@gnu.ai.mit.edu>
* gnu-nat.c, gnu-nat.h, msg.defs, exc_request.defs, i386gnu-nat.c,
msg_reply.defs, notify.defs, process_reply.defs, reply_mig_hack.awk,
config/nm-gnu.h, config/i386/{i386gnu.mh, i386gnu.mt, nm-gnu.h,
m-i386gnu.h, xm-i386gnu.h}: New files for GNU hurd.
1996-04-08 13:50:30 +08:00
|
|
|
|
|
1996-07-17 14:03:26 +08:00
|
|
|
|
thread = inf_tid_to_thread (current_inferior, inferior_pid);
|
From: Miles Bader <miles@gnu.ai.mit.edu>
* gnu-nat.c, gnu-nat.h, msg.defs, exc_request.defs, i386gnu-nat.c,
msg_reply.defs, notify.defs, process_reply.defs, reply_mig_hack.awk,
config/nm-gnu.h, config/i386/{i386gnu.mh, i386gnu.mt, nm-gnu.h,
m-i386gnu.h, xm-i386gnu.h}: New files for GNU hurd.
1996-04-08 13:50:30 +08:00
|
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|
|
if (! thread)
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|
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|
error ("store inferior registers: %d: Invalid thread", inferior_pid);
|
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|
|
|
|
1998-12-11 07:07:24 +08:00
|
|
|
|
proc_debug (thread, "storing register %s.", REGISTER_NAME (reg));
|
From: Miles Bader <miles@gnu.ai.mit.edu>
* gnu-nat.c, gnu-nat.h, msg.defs, exc_request.defs, i386gnu-nat.c,
msg_reply.defs, notify.defs, process_reply.defs, reply_mig_hack.awk,
config/nm-gnu.h, config/i386/{i386gnu.mh, i386gnu.mt, nm-gnu.h,
m-i386gnu.h, xm-i386gnu.h}: New files for GNU hurd.
1996-04-08 13:50:30 +08:00
|
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|
|
|
|
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|
was_aborted = thread->aborted;
|
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|
|
|
was_valid = thread->state_valid;
|
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|
if (! was_aborted && was_valid)
|
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|
bcopy (&thread->state, &old_state, sizeof (old_state));
|
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state = proc_get_state (thread, 1);
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|
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|
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|
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if (! state)
|
1996-07-17 14:03:26 +08:00
|
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|
|
warning ("Couldn't store register %s from %s (invalid thread).",
|
1998-12-11 07:07:24 +08:00
|
|
|
|
REGISTER_NAME (reg), proc_string (thread));
|
From: Miles Bader <miles@gnu.ai.mit.edu>
* gnu-nat.c, gnu-nat.h, msg.defs, exc_request.defs, i386gnu-nat.c,
msg_reply.defs, notify.defs, process_reply.defs, reply_mig_hack.awk,
config/nm-gnu.h, config/i386/{i386gnu.mh, i386gnu.mt, nm-gnu.h,
m-i386gnu.h, xm-i386gnu.h}: New files for GNU hurd.
1996-04-08 13:50:30 +08:00
|
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|
|
else
|
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|
|
|
{
|
|
|
|
|
if (! was_aborted && was_valid)
|
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|
|
|
/* See which registers have changed after aborting the thread. */
|
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|
|
|
{
|
|
|
|
|
int check_reg;
|
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|
|
|
for (check_reg = 0; check_reg < NUM_REGS; check_reg++)
|
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|
|
|
if ((thread->fetched_regs & (1 << check_reg))
|
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|
|
|
&& bcmp (REG_ADDR (&old_state, check_reg),
|
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|
|
|
REG_ADDR (state, check_reg),
|
|
|
|
|
REGISTER_RAW_SIZE (check_reg)))
|
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|
|
|
/* Register CHECK_REG has changed! Ack! */
|
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|
{
|
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|
warning ("Register %s changed after thread was aborted.",
|
1998-12-11 07:07:24 +08:00
|
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|
|
REGISTER_NAME (check_reg));
|
From: Miles Bader <miles@gnu.ai.mit.edu>
* gnu-nat.c, gnu-nat.h, msg.defs, exc_request.defs, i386gnu-nat.c,
msg_reply.defs, notify.defs, process_reply.defs, reply_mig_hack.awk,
config/nm-gnu.h, config/i386/{i386gnu.mh, i386gnu.mt, nm-gnu.h,
m-i386gnu.h, xm-i386gnu.h}: New files for GNU hurd.
1996-04-08 13:50:30 +08:00
|
|
|
|
if (reg >= 0 && reg != check_reg)
|
|
|
|
|
/* Update gdb's copy of the register. */
|
|
|
|
|
supply_register (check_reg, REG_ADDR (state, check_reg));
|
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|
|
|
else
|
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|
|
|
warning ("... also writing this register! Suspicious...");
|
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|
|
|
}
|
|
|
|
|
}
|
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|
|
|
|
|
|
|
|
if (reg >= 0)
|
|
|
|
|
{
|
1998-12-11 07:07:24 +08:00
|
|
|
|
proc_debug (thread, "storing register: %s", REGISTER_NAME (reg));
|
From: Miles Bader <miles@gnu.ai.mit.edu>
* gnu-nat.c, gnu-nat.h, msg.defs, exc_request.defs, i386gnu-nat.c,
msg_reply.defs, notify.defs, process_reply.defs, reply_mig_hack.awk,
config/nm-gnu.h, config/i386/{i386gnu.mh, i386gnu.mt, nm-gnu.h,
m-i386gnu.h, xm-i386gnu.h}: New files for GNU hurd.
1996-04-08 13:50:30 +08:00
|
|
|
|
STORE_REGS (state, reg, 1);
|
|
|
|
|
}
|
|
|
|
|
else
|
|
|
|
|
{
|
|
|
|
|
proc_debug (thread, "storing all registers");
|
|
|
|
|
for (reg = 0; reg < NUM_REGS; reg++)
|
|
|
|
|
STORE_REGS (state, reg, 1);
|
|
|
|
|
}
|
|
|
|
|
}
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
/* jtv@hut.fi: I copied and modified this 387 code from
|
|
|
|
|
* gdb/i386-xdep.c. Modifications for Mach 3.0.
|
|
|
|
|
*
|
|
|
|
|
* i387 status dumper. See also i387-tdep.c
|
|
|
|
|
*/
|
|
|
|
|
struct env387
|
|
|
|
|
{
|
|
|
|
|
unsigned short control;
|
|
|
|
|
unsigned short r0;
|
|
|
|
|
unsigned short status;
|
|
|
|
|
unsigned short r1;
|
|
|
|
|
unsigned short tag;
|
|
|
|
|
unsigned short r2;
|
|
|
|
|
unsigned long eip;
|
|
|
|
|
unsigned short code_seg;
|
|
|
|
|
unsigned short opcode;
|
|
|
|
|
unsigned long operand;
|
|
|
|
|
unsigned short operand_seg;
|
|
|
|
|
unsigned short r3;
|
|
|
|
|
unsigned char regs[8][10];
|
|
|
|
|
};
|
|
|
|
|
/* This routine is machine independent?
|
|
|
|
|
* Should move it to i387-tdep.c but you need to export struct env387
|
|
|
|
|
*/
|
|
|
|
|
static
|
|
|
|
|
print_387_status (status, ep)
|
|
|
|
|
unsigned short status;
|
|
|
|
|
struct env387 *ep;
|
|
|
|
|
{
|
|
|
|
|
int i;
|
|
|
|
|
int bothstatus;
|
|
|
|
|
int top;
|
|
|
|
|
int fpreg;
|
|
|
|
|
unsigned char *p;
|
|
|
|
|
|
|
|
|
|
bothstatus = ((status != 0) && (ep->status != 0));
|
|
|
|
|
if (status != 0)
|
|
|
|
|
{
|
|
|
|
|
if (bothstatus)
|
|
|
|
|
printf_unfiltered ("u: ");
|
|
|
|
|
print_387_status_word (status);
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
if (ep->status != 0)
|
|
|
|
|
{
|
|
|
|
|
if (bothstatus)
|
|
|
|
|
printf_unfiltered ("e: ");
|
|
|
|
|
print_387_status_word (ep->status);
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
print_387_control_word (ep->control);
|
|
|
|
|
printf_unfiltered ("last exception: ");
|
|
|
|
|
printf_unfiltered ("opcode %s; ", local_hex_string(ep->opcode));
|
|
|
|
|
printf_unfiltered ("pc %s:", local_hex_string(ep->code_seg));
|
|
|
|
|
printf_unfiltered ("%s; ", local_hex_string(ep->eip));
|
|
|
|
|
printf_unfiltered ("operand %s", local_hex_string(ep->operand_seg));
|
|
|
|
|
printf_unfiltered (":%s\n", local_hex_string(ep->operand));
|
|
|
|
|
|
|
|
|
|
top = (ep->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->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->regs[fpreg][i]);
|
|
|
|
|
|
|
|
|
|
floatformat_to_double (&floatformat_i387_ext, (char *)ep->regs[fpreg],
|
|
|
|
|
&val);
|
|
|
|
|
printf_unfiltered (" %g\n", val);
|
|
|
|
|
}
|
|
|
|
|
if (ep->r0)
|
|
|
|
|
printf_unfiltered ("warning: reserved0 is %s\n", local_hex_string(ep->r0));
|
|
|
|
|
if (ep->r1)
|
|
|
|
|
printf_unfiltered ("warning: reserved1 is %s\n", local_hex_string(ep->r1));
|
|
|
|
|
if (ep->r2)
|
|
|
|
|
printf_unfiltered ("warning: reserved2 is %s\n", local_hex_string(ep->r2));
|
|
|
|
|
if (ep->r3)
|
|
|
|
|
printf_unfiltered ("warning: reserved3 is %s\n", local_hex_string(ep->r3));
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
/*
|
|
|
|
|
* values that go into fp_kind (from <i386/fpreg.h>)
|
|
|
|
|
*/
|
|
|
|
|
#define FP_NO 0 /* no fp chip, no emulator (no fp support) */
|
|
|
|
|
#define FP_SW 1 /* no fp chip, using software emulator */
|
|
|
|
|
#define FP_HW 2 /* chip present bit */
|
|
|
|
|
#define FP_287 2 /* 80287 chip present */
|
|
|
|
|
#define FP_387 3 /* 80387 chip present */
|
|
|
|
|
|
|
|
|
|
typedef struct fpstate {
|
|
|
|
|
#if 1
|
|
|
|
|
unsigned char state[FP_STATE_BYTES]; /* "hardware" state */
|
|
|
|
|
#else
|
|
|
|
|
struct env387 state; /* Actually this */
|
|
|
|
|
#endif
|
|
|
|
|
int status; /* Duplicate status */
|
|
|
|
|
} *fpstate_t;
|
|
|
|
|
|
|
|
|
|
/* Mach 3 specific routines.
|
|
|
|
|
*/
|
|
|
|
|
static int
|
|
|
|
|
get_i387_state (fstate)
|
|
|
|
|
struct fpstate *fstate;
|
|
|
|
|
{
|
|
|
|
|
error_t err;
|
|
|
|
|
thread_state_data_t state;
|
|
|
|
|
unsigned int fsCnt = i386_FLOAT_STATE_COUNT;
|
|
|
|
|
struct i386_float_state *fsp;
|
|
|
|
|
struct proc *thread = inf_tid_to_thread (current_inferior, inferior_pid);
|
|
|
|
|
|
|
|
|
|
if (!thread)
|
|
|
|
|
error ("get_i387_state: Invalid thread");
|
|
|
|
|
|
|
|
|
|
proc_abort (thread, 0); /* Make sure THREAD's in a reasonable state. */
|
|
|
|
|
|
|
|
|
|
err = thread_get_state (thread->port, i386_FLOAT_STATE, state, &fsCnt);
|
|
|
|
|
if (err)
|
|
|
|
|
{
|
|
|
|
|
warning ("Can not get live floating point state: %s",
|
|
|
|
|
mach_error_string (err));
|
|
|
|
|
return 0;
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
fsp = (struct i386_float_state *)state;
|
|
|
|
|
/* The 387 chip (also 486 counts) or a software emulator? */
|
|
|
|
|
if (!fsp->initialized || (fsp->fpkind != FP_387 && fsp->fpkind != FP_SW))
|
|
|
|
|
return 0;
|
|
|
|
|
|
|
|
|
|
/* Clear the target then copy thread's float state there.
|
|
|
|
|
Make a copy of the status word, for some reason?
|
|
|
|
|
*/
|
|
|
|
|
memset (fstate, 0, sizeof (struct fpstate));
|
|
|
|
|
|
|
|
|
|
fstate->status = fsp->exc_status;
|
|
|
|
|
|
|
|
|
|
memcpy (fstate->state, (char *)&fsp->hw_state, FP_STATE_BYTES);
|
|
|
|
|
|
|
|
|
|
return 1;
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
/*
|
|
|
|
|
* This is called by "info float" command
|
|
|
|
|
*/
|
|
|
|
|
void
|
|
|
|
|
i386_mach3_float_info()
|
|
|
|
|
{
|
|
|
|
|
char buf [sizeof (struct fpstate) + 2 * sizeof (int)];
|
|
|
|
|
int valid = 0;
|
|
|
|
|
fpstate_t fps;
|
|
|
|
|
|
|
|
|
|
if (target_has_execution)
|
|
|
|
|
valid = get_i387_state (buf);
|
|
|
|
|
|
|
|
|
|
if (!valid)
|
|
|
|
|
{
|
|
|
|
|
warning ("no floating point status saved");
|
|
|
|
|
return;
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
fps = (fpstate_t) buf;
|
|
|
|
|
|
|
|
|
|
print_387_status (fps->status, (struct env387 *)fps->state);
|
|
|
|
|
}
|