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-rw-r--r--gdb/i386gnu-nat.c293
1 files changed, 0 insertions, 293 deletions
diff --git a/gdb/i386gnu-nat.c b/gdb/i386gnu-nat.c
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--- a/gdb/i386gnu-nat.c
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@@ -1,293 +0,0 @@
-/* Low level interface to i386 running the GNU Hurd.
- Copyright 1992, 1995, 1996, 1998, 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. */
-
-#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>
-#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
-
-/* 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. */
-static int reg_offset[] =
-{
- 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)
-};
-
-#define REG_ADDR(state, regnum) ((char *)(state) + reg_offset[regnum])
-
-
-/* Get the whole floating-point state of THREAD and record the
- values of the corresponding (pseudo) registers. */
-static void
-fetch_fpregs (struct proc *thread)
-{
- mach_msg_type_number_t count = i386_FLOAT_STATE_COUNT;
- struct i386_float_state state;
- error_t err;
-
- err = thread_get_state (thread->port, i386_FLOAT_STATE,
- (thread_state_t) &state, &count);
- if (err)
- {
- warning ("Couldn't fetch floating-point state from %s",
- proc_string (thread));
- return;
- }
-
- if (!state.initialized)
- /* The floating-point state isn't initialized. */
- {
- int i;
-
- for (i = FP0_REGNUM; i <= FOP_REGNUM; i++)
- supply_register (i, NULL);
-
- return;
- }
-
- /* Supply the floating-point registers. */
- i387_supply_fsave (state.hw_state);
-}
-
-#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 ((char *) fpregs);
-}
-#endif
-
-/* Fetch register REGNO, or all regs if REGNO is -1. */
-void
-gnu_fetch_registers (int regno)
-{
- struct proc *thread;
-
- /* Make sure we know about new threads. */
- inf_update_procs (current_inferior);
-
- thread = inf_tid_to_thread (current_inferior, PIDGET (inferior_ptid));
- if (!thread)
- error ("Can't fetch registers from thread %d: No such thread",
- PIDGET (inferior_ptid));
-
- if (regno < I386_NUM_GREGS || regno == -1)
- {
- thread_state_t state;
-
- /* This does the dirty work for us. */
- state = proc_get_state (thread, 0);
- if (!state)
- {
- warning ("Couldn't fetch registers from %s",
- proc_string (thread));
- return;
- }
-
- if (regno == -1)
- {
- int i;
-
- proc_debug (thread, "fetching all register");
-
- for (i = 0; i < I386_NUM_GREGS; i++)
- supply_register (i, REG_ADDR (state, i));
- thread->fetched_regs = ~0;
- }
- else
- {
- proc_debug (thread, "fetching register %s", REGISTER_NAME (regno));
-
- supply_register (regno, REG_ADDR (state, regno));
- thread->fetched_regs |= (1 << regno);
- }
- }
-
- if (regno >= I386_NUM_GREGS || regno == -1)
- {
- proc_debug (thread, "fetching floating-point registers");
-
- fetch_fpregs (thread);
- }
-}
-
-
-/* Store the whole floating-point state into THREAD using information
- from the corresponding (pseudo) registers. */
-static void
-store_fpregs (struct proc *thread, int regno)
-{
- mach_msg_type_number_t count = i386_FLOAT_STATE_COUNT;
- struct i386_float_state state;
- error_t err;
-
- err = thread_get_state (thread->port, i386_FLOAT_STATE,
- (thread_state_t) &state, &count);
- if (err)
- {
- warning ("Couldn't fetch floating-point state from %s",
- proc_string (thread));
- return;
- }
-
- /* FIXME: kettenis/2001-07-15: Is this right? Should we somehow
- take into account REGISTER_VALID like the old code did? */
- i387_fill_fsave (state.hw_state, regno);
-
- err = thread_set_state (thread->port, i386_FLOAT_STATE,
- (thread_state_t) &state, i386_FLOAT_STATE_COUNT);
- if (err)
- {
- warning ("Couldn't store floating-point state into %s",
- proc_string (thread));
- return;
- }
-}
-
-/* Store at least register REGNO, or all regs if REGNO == -1. */
-void
-gnu_store_registers (int regno)
-{
- struct proc *thread;
-
- /* Make sure we know about new threads. */
- inf_update_procs (current_inferior);
-
- thread = inf_tid_to_thread (current_inferior, PIDGET (inferior_ptid));
- if (!thread)
- error ("Couldn't store registers into thread %d: No such thread",
- PIDGET (inferior_ptid));
-
- if (regno < I386_NUM_GREGS || regno == -1)
- {
- thread_state_t state;
- thread_state_data_t old_state;
- int was_aborted = thread->aborted;
- int was_valid = thread->state_valid;
- int trace;
-
- if (!was_aborted && was_valid)
- memcpy (&old_state, &thread->state, sizeof (old_state));
-
- 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;
-
- 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++)
- if ((thread->fetched_regs & (1 << check_regno))
- && memcpy (REG_ADDR (&old_state, check_regno),
- REG_ADDR (state, check_regno),
- REGISTER_RAW_SIZE (check_regno)))
- /* 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. */
- supply_register (check_regno, REG_ADDR (state, check_regno));
- else
- warning ("... also writing this register! Suspicious...");
- }
- }
-
-#define fill(state, regno) \
- memcpy (REG_ADDR(state, regno), &registers[REGISTER_BYTE (regno)], \
- REGISTER_RAW_SIZE (regno))
-
- if (regno == -1)
- {
- int i;
-
- proc_debug (thread, "storing all registers");
-
- for (i = 0; i < I386_NUM_GREGS; i++)
- if (register_valid[i])
- fill (state, i);
- }
- else
- {
- proc_debug (thread, "storing register %s", REGISTER_NAME (regno));
-
- gdb_assert (register_valid[regno]);
- fill (state, regno);
- }
-
- /* Restore the T bit. */
- ((struct i386_thread_state *)state)->efl &= ~0x100;
- ((struct i386_thread_state *)state)->efl |= trace;
- }
-
-#undef fill
-
- if (regno >= I386_NUM_GREGS || regno == -1)
- {
- proc_debug (thread, "storing floating-point registers");
-
- store_fpregs (thread, regno);
- }
-}
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