binutils-gdb/gdb/i386gnu-nat.c

294 lines
7.8 KiB
C
Raw Normal View History

2000-02-01 04:19:29 +01:00
/* Low level interface to i386 running the GNU Hurd.
2001-03-06 09:22:02 +01:00
Copyright 1992, 1995, 1996, 1998, 2000, 2001
Free Software Foundation, Inc.
1999-07-07 22:19:36 +02:00
This file is part of GDB.
1999-07-07 22:19:36 +02:00
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.
1999-07-07 22:19:36 +02:00
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.
1999-07-07 22:19:36 +02:00
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 "inferior.h"
#include "floatformat.h"
#include "regcache.h"
#include "gdb_assert.h"
#include <errno.h>
#include <stdio.h>
#include <mach.h>
2000-02-01 04:19:29 +01:00
#include <mach_error.h>
#include <mach/message.h>
#include <mach/exception.h>
#include "i386-tdep.h"
#include "gnu-nat.h"
#include "i387-tdep.h"
#ifdef HAVE_SYS_PROCFS_H
# include <sys/procfs.h>
# include "gregset.h"
#endif
2000-02-01 04:19:29 +01:00
/* Offset to the thread_state_t location where REG is stored. */
#define REG_OFFSET(reg) offsetof (struct i386_thread_state, reg)
/* At REG_OFFSET[N] is the offset to the thread_state_t location where
the GDB register N is stored. */
1999-07-07 22:19:36 +02:00
static int reg_offset[] =
{
1999-07-07 22:19:36 +02:00
REG_OFFSET (eax), REG_OFFSET (ecx), REG_OFFSET (edx), REG_OFFSET (ebx),
REG_OFFSET (uesp), REG_OFFSET (ebp), REG_OFFSET (esi), REG_OFFSET (edi),
REG_OFFSET (eip), REG_OFFSET (efl), REG_OFFSET (cs), REG_OFFSET (ss),
REG_OFFSET (ds), REG_OFFSET (es), REG_OFFSET (fs), REG_OFFSET (gs)
};
2000-02-01 04:19:29 +01:00
#define REG_ADDR(state, regnum) ((char *)(state) + reg_offset[regnum])
2000-02-01 04:19:29 +01:00
/* Get the whole floating-point state of THREAD and record the
values of the corresponding (pseudo) registers. */
static void
fetch_fpregs (struct proc *thread)
{
2000-02-01 04:19:29 +01:00
mach_msg_type_number_t count = i386_FLOAT_STATE_COUNT;
struct i386_float_state state;
error_t err;
2000-02-01 04:19:29 +01:00
err = thread_get_state (thread->port, i386_FLOAT_STATE,
(thread_state_t) &state, &count);
if (err)
{
2000-02-01 04:19:29 +01:00
warning ("Couldn't fetch floating-point state from %s",
proc_string (thread));
return;
}
2000-02-01 04:19:29 +01:00
if (!state.initialized)
2000-02-01 04:19:29 +01:00
/* The floating-point state isn't initialized. */
{
int i;
for (i = FP0_REGNUM; i <= FOP_REGNUM; i++)
2000-02-01 04:19:29 +01:00
supply_register (i, NULL);
return;
}
2000-02-01 04:19:29 +01:00
/* Supply the floating-point registers. */
i387_supply_fsave (current_regcache, -1, state.hw_state);
}
2000-02-01 04:19:29 +01:00
#ifdef HAVE_SYS_PROCFS_H
/* These two calls are used by the core-regset.c code for
reading ELF core files. */
void
supply_gregset (gdb_gregset_t *gregs)
{
int i;
for (i = 0; i < I386_NUM_GREGS; i++)
supply_register (i, REG_ADDR (gregs, i));
}
void
supply_fpregset (gdb_fpregset_t *fpregs)
{
i387_supply_fsave (current_regcache, -1, fpregs);
}
#endif
2000-02-01 04:19:29 +01:00
/* Fetch register REGNO, or all regs if REGNO is -1. */
void
2000-02-01 04:19:29 +01:00
gnu_fetch_registers (int regno)
{
struct proc *thread;
1999-07-07 22:19:36 +02:00
2000-02-01 04:19:29 +01:00
/* Make sure we know about new threads. */
inf_update_procs (current_inferior);
2001-05-04 06:15:33 +02:00
thread = inf_tid_to_thread (current_inferior, PIDGET (inferior_ptid));
1999-07-07 22:19:36 +02:00
if (!thread)
2000-02-01 04:19:29 +01:00
error ("Can't fetch registers from thread %d: No such thread",
2001-05-04 06:15:33 +02:00
PIDGET (inferior_ptid));
if (regno < I386_NUM_GREGS || regno == -1)
{
2000-02-01 04:19:29 +01:00
thread_state_t state;
2000-02-01 04:19:29 +01:00
/* This does the dirty work for us. */
state = proc_get_state (thread, 0);
if (!state)
{
2000-02-01 04:19:29 +01:00
warning ("Couldn't fetch registers from %s",
proc_string (thread));
return;
}
2000-02-01 04:19:29 +01:00
if (regno == -1)
{
2000-02-01 04:19:29 +01:00
int i;
2000-02-01 04:19:29 +01:00
proc_debug (thread, "fetching all register");
for (i = 0; i < I386_NUM_GREGS; i++)
2000-02-01 04:19:29 +01:00
supply_register (i, REG_ADDR (state, i));
thread->fetched_regs = ~0;
}
else
{
2000-02-01 04:19:29 +01:00
proc_debug (thread, "fetching register %s", REGISTER_NAME (regno));
2000-02-01 04:19:29 +01:00
supply_register (regno, REG_ADDR (state, regno));
thread->fetched_regs |= (1 << regno);
}
}
2000-02-01 04:19:29 +01:00
if (regno >= I386_NUM_GREGS || regno == -1)
2000-02-01 04:19:29 +01:00
{
proc_debug (thread, "fetching floating-point registers");
2000-02-01 04:19:29 +01:00
fetch_fpregs (thread);
}
}
2000-02-01 04:19:29 +01:00
/* Store the whole floating-point state into THREAD using information
from the corresponding (pseudo) registers. */
static void
store_fpregs (struct proc *thread, int regno)
2000-02-01 04:19:29 +01:00
{
mach_msg_type_number_t count = i386_FLOAT_STATE_COUNT;
struct i386_float_state state;
error_t err;
1999-07-07 22:19:36 +02:00
2000-02-01 04:19:29 +01:00
err = thread_get_state (thread->port, i386_FLOAT_STATE,
(thread_state_t) &state, &count);
if (err)
{
2000-02-01 04:19:29 +01:00
warning ("Couldn't fetch floating-point state from %s",
proc_string (thread));
return;
}
1999-07-07 22:19:36 +02:00
/* FIXME: kettenis/2001-07-15: Is this right? Should we somehow
take into account DEPRECATED_REGISTER_VALID like the old code did? */
i387_fill_fsave (state.hw_state, regno);
2000-02-01 04:19:29 +01:00
err = thread_set_state (thread->port, i386_FLOAT_STATE,
(thread_state_t) &state, i386_FLOAT_STATE_COUNT);
if (err)
{
2000-02-01 04:19:29 +01:00
warning ("Couldn't store floating-point state into %s",
proc_string (thread));
return;
}
}
1999-07-07 22:19:36 +02:00
2000-02-01 04:19:29 +01:00
/* Store at least register REGNO, or all regs if REGNO == -1. */
void
gnu_store_registers (int regno)
1999-07-07 22:19:36 +02:00
{
2000-02-01 04:19:29 +01:00
struct proc *thread;
2000-02-01 04:19:29 +01:00
/* Make sure we know about new threads. */
inf_update_procs (current_inferior);
1999-07-07 22:19:36 +02:00
2001-05-04 06:15:33 +02:00
thread = inf_tid_to_thread (current_inferior, PIDGET (inferior_ptid));
if (!thread)
2000-02-01 04:19:29 +01:00
error ("Couldn't store registers into thread %d: No such thread",
2001-05-04 06:15:33 +02:00
PIDGET (inferior_ptid));
if (regno < I386_NUM_GREGS || regno == -1)
{
2000-02-01 04:19:29 +01:00
thread_state_t state;
thread_state_data_t old_state;
int was_aborted = thread->aborted;
int was_valid = thread->state_valid;
int trace;
2000-02-01 04:19:29 +01:00
if (!was_aborted && was_valid)
memcpy (&old_state, &thread->state, sizeof (old_state));
2000-02-01 04:19:29 +01:00
state = proc_get_state (thread, 1);
if (!state)
{
warning ("Couldn't store registers into %s", proc_string (thread));
return;
}
/* Save the T bit. We might try to restore the %eflags register
below, but changing the T bit would seriously confuse GDB. */
trace = ((struct i386_thread_state *)state)->efl & 0x100;
2000-02-01 04:19:29 +01:00
if (!was_aborted && was_valid)
/* See which registers have changed after aborting the thread. */
{
int check_regno;
for (check_regno = 0; check_regno < I386_NUM_GREGS; check_regno++)
2000-02-01 04:19:29 +01:00
if ((thread->fetched_regs & (1 << check_regno))
&& memcpy (REG_ADDR (&old_state, check_regno),
REG_ADDR (state, check_regno),
2003-10-02 Andrew Cagney <cagney@redhat.com> * gdbarch.sh (DEPRECATED_REGISTER_RAW_SIZE): Rename REGISTER_RAW_SIZE. * gdbarch.h, gdbarch.c: Re-generate. * aix-thread.c, alpha-tdep.h, arm-tdep.c, core-sol2.c: Update. * cris-tdep.c, dve3900-rom.c, findvar.c, frame.c: Update. * hppa-tdep.c, hppab-nat.c, hppah-nat.c, hppam3-nat.c: Update. * hpux-thread.c, i386gnu-nat.c, ia64-aix-nat.c: Update. * ia64-linux-nat.c, ia64-tdep.c, infcmd.c, infptrace.c: Update. * infrun.c, irix5-nat.c, lynx-nat.c, mips-linux-tdep.c: Update. * mips-nat.c, mips-tdep.c, mipsv4-nat.c, mn10300-tdep.c: Update. * monitor.c, ns32k-tdep.c, ppc-linux-nat.c, regcache.c: Update. * remote-e7000.c, remote-mips.c, remote-sim.c: Update. * remote-vxmips.c, remote-vxsparc.c, remote.c: Update. * rom68k-rom.c, rs6000-nat.c, rs6000-tdep.c, s390-tdep.c: Update. * sh64-tdep.c, sparc-nat.c, sparc-tdep.c, stack.c: Update. * target.c, tracepoint.c, v850-tdep.c, v850ice.c, valops.c: Update. * vax-tdep.c, vax-tdep.h, x86-64-tdep.c, xstormy16-tdep.c: Update. * config/m68k/tm-delta68.h, config/m68k/tm-vx68.h: Update. * config/sparc/tm-sparc.h, config/sparc/tm-sparclynx.h: Update. 2003-10-02 Andrew Cagney <cagney@redhat.com> * gdbint.texinfo (Target Architecture Definition): Rename REGISTER_RAW_SIZE to DEPRECATED_REGISTER_RAW_SIZE. * gdb.texinfo (Packets, Stop Reply Packets): Ditto. * gdbint.texinfo (Target Architecture Definition): Rename 2003-10-02 Andrew Cagney <cagney@redhat.com> * mi-main.c: Rename REGISTER_RAW_SIZE to DEPRECATED_REGISTER_RAW_SIZE.
2003-10-02 22:28:31 +02:00
DEPRECATED_REGISTER_RAW_SIZE (check_regno)))
2000-02-01 04:19:29 +01:00
/* Register CHECK_REGNO has changed! Ack! */
{
warning ("Register %s changed after the thread was aborted",
REGISTER_NAME (check_regno));
if (regno >= 0 && regno != check_regno)
/* Update GDB's copy of the register. */
2000-02-01 04:19:29 +01:00
supply_register (check_regno, REG_ADDR (state, check_regno));
else
warning ("... also writing this register! Suspicious...");
}
}
2000-02-01 04:19:29 +01:00
#define fill(state, regno) \
memcpy (REG_ADDR(state, regno), &deprecated_registers[DEPRECATED_REGISTER_BYTE (regno)], \
2003-10-02 Andrew Cagney <cagney@redhat.com> * gdbarch.sh (DEPRECATED_REGISTER_RAW_SIZE): Rename REGISTER_RAW_SIZE. * gdbarch.h, gdbarch.c: Re-generate. * aix-thread.c, alpha-tdep.h, arm-tdep.c, core-sol2.c: Update. * cris-tdep.c, dve3900-rom.c, findvar.c, frame.c: Update. * hppa-tdep.c, hppab-nat.c, hppah-nat.c, hppam3-nat.c: Update. * hpux-thread.c, i386gnu-nat.c, ia64-aix-nat.c: Update. * ia64-linux-nat.c, ia64-tdep.c, infcmd.c, infptrace.c: Update. * infrun.c, irix5-nat.c, lynx-nat.c, mips-linux-tdep.c: Update. * mips-nat.c, mips-tdep.c, mipsv4-nat.c, mn10300-tdep.c: Update. * monitor.c, ns32k-tdep.c, ppc-linux-nat.c, regcache.c: Update. * remote-e7000.c, remote-mips.c, remote-sim.c: Update. * remote-vxmips.c, remote-vxsparc.c, remote.c: Update. * rom68k-rom.c, rs6000-nat.c, rs6000-tdep.c, s390-tdep.c: Update. * sh64-tdep.c, sparc-nat.c, sparc-tdep.c, stack.c: Update. * target.c, tracepoint.c, v850-tdep.c, v850ice.c, valops.c: Update. * vax-tdep.c, vax-tdep.h, x86-64-tdep.c, xstormy16-tdep.c: Update. * config/m68k/tm-delta68.h, config/m68k/tm-vx68.h: Update. * config/sparc/tm-sparc.h, config/sparc/tm-sparclynx.h: Update. 2003-10-02 Andrew Cagney <cagney@redhat.com> * gdbint.texinfo (Target Architecture Definition): Rename REGISTER_RAW_SIZE to DEPRECATED_REGISTER_RAW_SIZE. * gdb.texinfo (Packets, Stop Reply Packets): Ditto. * gdbint.texinfo (Target Architecture Definition): Rename 2003-10-02 Andrew Cagney <cagney@redhat.com> * mi-main.c: Rename REGISTER_RAW_SIZE to DEPRECATED_REGISTER_RAW_SIZE.
2003-10-02 22:28:31 +02:00
DEPRECATED_REGISTER_RAW_SIZE (regno))
2000-02-01 04:19:29 +01:00
if (regno == -1)
{
int i;
2000-02-01 04:19:29 +01:00
proc_debug (thread, "storing all registers");
1999-07-07 22:19:36 +02:00
for (i = 0; i < I386_NUM_GREGS; i++)
if (deprecated_register_valid[i])
2000-02-01 04:19:29 +01:00
fill (state, i);
}
else
{
proc_debug (thread, "storing register %s", REGISTER_NAME (regno));
gdb_assert (deprecated_register_valid[regno]);
2000-02-01 04:19:29 +01:00
fill (state, regno);
}
/* Restore the T bit. */
((struct i386_thread_state *)state)->efl &= ~0x100;
((struct i386_thread_state *)state)->efl |= trace;
}
1999-07-07 22:19:36 +02:00
2000-02-01 04:19:29 +01:00
#undef fill
if (regno >= I386_NUM_GREGS || regno == -1)
2000-02-01 04:19:29 +01:00
{
proc_debug (thread, "storing floating-point registers");
store_fpregs (thread, regno);
2000-02-01 04:19:29 +01:00
}
}