/* Low level interface to i386 running the GNU Hurd.
- Copyright 1992, 1995, 1996, 1998, 2000, 2001
- Free Software Foundation, Inc.
+
+ Copyright (C) 1992, 1995, 1996, 1998, 2000, 2001, 2004, 2007, 2008, 2009,
+ 2010, 2011 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
+ the Free Software Foundation; either version 3 of the License, or
(at your option) any later version.
This program is distributed in the hope that it will be useful,
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. */
+ along with this program. If not, see <http://www.gnu.org/licenses/>. */
#include "defs.h"
#include "inferior.h"
#include "regcache.h"
#include "gdb_assert.h"
-#include <stdio.h>
#include <errno.h>
+#include <stdio.h>
+#include "gdb_string.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"
-/* The FPU hardware state. */
-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];
-};
+#ifdef HAVE_SYS_PROCFS_H
+# include <sys/procfs.h>
+# include "gregset.h"
+#endif
-\f
/* Offset to the thread_state_t location where REG is stored. */
#define REG_OFFSET(reg) offsetof (struct i386_thread_state, reg)
-/* At reg_offset[i] is the offset to the thread_state_t location where
- the gdb registers[i] is stored. */
+/* 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),
};
#define REG_ADDR(state, regnum) ((char *)(state) + reg_offset[regnum])
+#define CREG_ADDR(state, regnum) ((const char *)(state) + reg_offset[regnum])
\f
-/* Get the whole floating-point state of THREAD and record the
- values of the corresponding (pseudo) registers. */
+/* Get the whole floating-point state of THREAD and record the values
+ of the corresponding (pseudo) registers. */
+
static void
-fetch_fpregs (struct proc *thread)
+fetch_fpregs (struct regcache *regcache, struct proc *thread)
{
mach_msg_type_number_t count = i386_FLOAT_STATE_COUNT;
struct i386_float_state state;
- struct env387 *ep = (struct env387 *) state.hw_state;
error_t err;
- int i;
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",
+ warning (_("Couldn't fetch floating-point state from %s"),
proc_string (thread));
return;
}
- if (! state.initialized)
- /* The floating-point state isn't initialized. */
+ if (!state.initialized)
{
- for (i = FP0_REGNUM; i <= FP7_REGNUM; i++)
- supply_register (i, NULL);
- for (i = FIRST_FPU_CTRL_REGNUM; i <= LAST_FPU_CTRL_REGNUM; i++)
- supply_register (i, NULL);
-
- return;
+ /* The floating-point state isn't initialized. */
+ i387_supply_fsave (regcache, -1, NULL);
+ }
+ else
+ {
+ /* Supply the floating-point registers. */
+ i387_supply_fsave (regcache, -1, state.hw_state);
}
+}
- /* Supply the floating-point registers. */
- for (i = 0; i < 8; i++)
- supply_register (FP0_REGNUM + i, ep->regs[i]);
-
- supply_register (FCTRL_REGNUM, (char *) &ep->control);
- supply_register (FSTAT_REGNUM, (char *) &ep->status);
- supply_register (FTAG_REGNUM, (char *) &ep->tag);
- supply_register (FCOFF_REGNUM, (char *) &ep->eip);
- supply_register (FDS_REGNUM, (char *) &ep->operand_seg);
- supply_register (FDOFF_REGNUM, (char *) &ep->operand);
-
- /* Store the code segment and opcode pseudo registers. */
- {
- long l;
-
- l = ep->code_seg;
- supply_register (FCS_REGNUM, (char *) &l);
- l = ep->opcode & ((1 << 11) - 1);
- supply_register (FOP_REGNUM, (char *) &l);
- }
+#ifdef HAVE_SYS_PROCFS_H
+/* These two calls are used by the core-regset.c code for
+ reading ELF core files. */
+void
+supply_gregset (struct regcache *regcache, const gdb_gregset_t *gregs)
+{
+ int i;
+ for (i = 0; i < I386_NUM_GREGS; i++)
+ regcache_raw_supply (regcache, i, CREG_ADDR (gregs, i));
}
-/* Fetch register REGNO, or all regs if REGNO is -1. */
void
-gnu_fetch_registers (int regno)
+supply_fpregset (struct regcache *regcache, const gdb_fpregset_t *fpregs)
+{
+ i387_supply_fsave (regcache, -1, fpregs);
+}
+#endif
+
+/* Fetch register REGNO, or all regs if REGNO is -1. */
+static void
+gnu_fetch_registers (struct target_ops *ops,
+ struct regcache *regcache, int regno)
{
struct proc *thread;
/* Make sure we know about new threads. */
- inf_update_procs (current_inferior);
+ inf_update_procs (gnu_current_inf);
- thread = inf_tid_to_thread (current_inferior, PIDGET (inferior_ptid));
+ thread = inf_tid_to_thread (gnu_current_inf,
+ ptid_get_tid (inferior_ptid));
if (!thread)
- error ("Can't fetch registers from thread %d: No such thread",
- PIDGET (inferior_ptid));
+ error (_("Can't fetch registers from thread %s: No such thread"),
+ target_pid_to_str (inferior_ptid));
- if (regno < NUM_GREGS || regno == -1)
+ 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",
+ 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 < NUM_GREGS; i++)
- supply_register (i, REG_ADDR (state, i));
+
+ for (i = 0; i < I386_NUM_GREGS; i++)
+ regcache_raw_supply (regcache, 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));
+ proc_debug (thread, "fetching register %s",
+ gdbarch_register_name (get_regcache_arch (regcache),
+ regno));
+
+ regcache_raw_supply (regcache, regno,
+ REG_ADDR (state, regno));
thread->fetched_regs |= (1 << regno);
}
}
- if (regno >= NUM_GREGS || regno == -1)
+ if (regno >= I386_NUM_GREGS || regno == -1)
{
proc_debug (thread, "fetching floating-point registers");
-
- fetch_fpregs (thread);
+
+ fetch_fpregs (regcache, thread);
}
}
-
\f
-/* Fill the i387 hardware state EP with selected data from the set of
- (pseudo) registers specified by REGS and VALID. VALID is an array
- indicating which registers in REGS are valid. If VALID is zero,
- all registers are assumed to be valid. */
-static void
-convert_to_env387 (struct env387 *ep, char *regs, signed char *valid)
-{
- int i;
-
- /* Fill in the floating-point registers. */
- for (i = 0; i < 8; i++)
- if (!valid || valid[i])
- memcpy (ep->regs[i], ®s[REGISTER_BYTE (FP0_REGNUM + i)],
- REGISTER_RAW_SIZE (FP0_REGNUM + i));
-
-#define fill(member, regno) \
- if (!valid || valid[(regno)]) \
- memcpy (&ep->member, ®s[REGISTER_BYTE (regno)], \
- sizeof (ep->member));
-
- fill (control, FCTRL_REGNUM);
- fill (status, FSTAT_REGNUM);
- fill (tag, FTAG_REGNUM);
- fill (eip, FCOFF_REGNUM);
- fill (operand, FDOFF_REGNUM);
- fill (operand_seg, FDS_REGNUM);
-
-#undef fill
-
- if (!valid || valid[FCS_REGNUM])
- ep->code_seg =
- (* (int *) ®isters[REGISTER_BYTE (FCS_REGNUM)] & 0xffff);
-
- if (!valid || valid[FOP_REGNUM])
- ep->opcode =
- ((* (int *) ®isters[REGISTER_BYTE (FOP_REGNUM)] & ((1 << 11) - 1)));
-}
/* Store the whole floating-point state into THREAD using information
from the corresponding (pseudo) registers. */
static void
-store_fpregs (struct proc *thread)
+store_fpregs (const struct regcache *regcache, struct proc *thread, int regno)
{
mach_msg_type_number_t count = i386_FLOAT_STATE_COUNT;
struct i386_float_state state;
(thread_state_t) &state, &count);
if (err)
{
- warning ("Couldn't fetch floating-point state from %s",
+ warning (_("Couldn't fetch floating-point state from %s"),
proc_string (thread));
return;
}
- convert_to_env387 ((struct env387 *) state.hw_state,
- registers, register_valid);
-
+ /* FIXME: kettenis/2001-07-15: Is this right? Should we somehow
+ take into account DEPRECATED_REGISTER_VALID like the old code did? */
+ i387_collect_fsave (regcache, regno, state.hw_state);
+
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",
+ 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)
+static void
+gnu_store_registers (struct target_ops *ops,
+ struct regcache *regcache, int regno)
{
struct proc *thread;
+ struct gdbarch *gdbarch = get_regcache_arch (regcache);
/* Make sure we know about new threads. */
- inf_update_procs (current_inferior);
+ inf_update_procs (gnu_current_inf);
- thread = inf_tid_to_thread (current_inferior, PIDGET (inferior_ptid));
+ thread = inf_tid_to_thread (gnu_current_inf,
+ ptid_get_tid (inferior_ptid));
if (!thread)
- error ("Couldn't store registers into thread %d: No such thread",
- PIDGET (inferior_ptid));
+ error (_("Couldn't store registers into thread %s: No such thread"),
+ target_pid_to_str (inferior_ptid));
- if (regno < NUM_GREGS || regno == -1)
+ if (regno < I386_NUM_GREGS || regno == -1)
{
thread_state_t state;
thread_state_data_t old_state;
state = proc_get_state (thread, 1);
if (!state)
{
- warning ("Couldn't store registers into %s", proc_string (thread));
+ warning (_("Couldn't store registers into %s"),
+ proc_string (thread));
return;
}
{
int check_regno;
- for (check_regno = 0; check_regno < NUM_GREGS; 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_size (gdbarch, check_regno)))
/* Register CHECK_REGNO has changed! Ack! */
{
- warning ("Register %s changed after the thread was aborted",
- REGISTER_NAME (check_regno));
+ warning (_("Register %s changed after the thread was aborted"),
+ gdbarch_register_name (gdbarch, check_regno));
if (regno >= 0 && regno != check_regno)
- /* Update gdb's copy of the register. */
- supply_register (check_regno, REG_ADDR (state, check_regno));
+ /* Update GDB's copy of the register. */
+ regcache_raw_supply (regcache, check_regno,
+ REG_ADDR (state, check_regno));
else
- warning ("... also writing this register! Suspicious...");
+ warning (_("... also writing this register! "
+ "Suspicious..."));
}
}
-#define fill(state, regno) \
- memcpy (REG_ADDR(state, regno), ®isters[REGISTER_BYTE (regno)], \
- REGISTER_RAW_SIZE (regno))
-
if (regno == -1)
{
int i;
-
+
proc_debug (thread, "storing all registers");
- for (i = 0; i < NUM_GREGS; i++)
- if (register_valid[i])
- fill (state, i);
+ for (i = 0; i < I386_NUM_GREGS; i++)
+ if (REG_VALID == regcache_register_status (regcache, i))
+ regcache_raw_collect (regcache, i, REG_ADDR (state, i));
}
else
{
- proc_debug (thread, "storing register %s", REGISTER_NAME (regno));
+ proc_debug (thread, "storing register %s",
+ gdbarch_register_name (gdbarch, regno));
- gdb_assert (register_valid[regno]);
- fill (state, regno);
+ gdb_assert (REG_VALID == regcache_register_status (regcache, regno));
+ regcache_raw_collect (regcache, regno, REG_ADDR (state, regno));
}
/* Restore the T bit. */
((struct i386_thread_state *)state)->efl |= trace;
}
-#undef fill
-
- if (regno >= NUM_GREGS || regno == -1)
+ if (regno >= I386_NUM_GREGS || regno == -1)
{
proc_debug (thread, "storing floating-point registers");
-
- store_fpregs (thread);
+
+ store_fpregs (regcache, thread, regno);
}
}
+
+/* Provide a prototype to silence -Wmissing-prototypes. */
+extern initialize_file_ftype _initialize_i386gnu_nat;
+
+void
+_initialize_i386gnu_nat (void)
+{
+ struct target_ops *t;
+
+ /* Fill in the generic GNU/Hurd methods. */
+ t = gnu_target ();
+
+ t->to_fetch_registers = gnu_fetch_registers;
+ t->to_store_registers = gnu_store_registers;
+
+ /* Register the target. */
+ add_target (t);
+}
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