/* Low level interface to i386 running the GNU Hurd.
- Copyright 1992, 1995, 1996, 1998, 2000, 2001, 2004
- Free Software Foundation, Inc.
+ Copyright (C) 1992-2014 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 "x86-nat.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 "i386-tdep.h"
#include "gnu-nat.h"
+#include "inf-child.h"
#include "i387-tdep.h"
#ifdef HAVE_SYS_PROCFS_H
REG_OFFSET (ds), REG_OFFSET (es), REG_OFFSET (fs), REG_OFFSET (gs)
};
+/* Offset to the greg_t location where REG is stored. */
+#define CREG_OFFSET(reg) (REG_##reg * 4)
+
+/* At CREG_OFFSET[N] is the offset to the greg_t location where
+ the GDB register N is stored. */
+static int creg_offset[] =
+{
+ CREG_OFFSET (EAX), CREG_OFFSET (ECX), CREG_OFFSET (EDX), CREG_OFFSET (EBX),
+ CREG_OFFSET (UESP), CREG_OFFSET (EBP), CREG_OFFSET (ESI), CREG_OFFSET (EDI),
+ CREG_OFFSET (EIP), CREG_OFFSET (EFL), CREG_OFFSET (CS), CREG_OFFSET (SS),
+ CREG_OFFSET (DS), CREG_OFFSET (ES), CREG_OFFSET (FS), CREG_OFFSET (GS)
+};
+
#define REG_ADDR(state, regnum) ((char *)(state) + reg_offset[regnum])
+#define CREG_ADDR(state, regnum) ((const char *)(state) + creg_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;
(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. */
{
- int i;
-
- for (i = FP0_REGNUM; i <= FOP_REGNUM; i++)
- regcache_raw_supply (current_regcache, 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. */
- i387_supply_fsave (current_regcache, -1, 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)
+supply_gregset (struct regcache *regcache, const gdb_gregset_t *gregs)
{
int i;
for (i = 0; i < I386_NUM_GREGS; i++)
- regcache_raw_supply (current_regcache, i, REG_ADDR (gregs, i));
+ regcache_raw_supply (regcache, i, CREG_ADDR (gregs, i));
}
void
-supply_fpregset (gdb_fpregset_t *fpregs)
+supply_fpregset (struct regcache *regcache, const gdb_fpregset_t *fpregs)
{
- i387_supply_fsave (current_regcache, -1, fpregs);
+ i387_supply_fsave (regcache, -1, fpregs);
}
#endif
/* Fetch register REGNO, or all regs if REGNO is -1. */
-void
-gnu_fetch_registers (int regno)
+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_lwp (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 < I386_NUM_GREGS || regno == -1)
{
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;
}
proc_debug (thread, "fetching all register");
for (i = 0; i < I386_NUM_GREGS; i++)
- regcache_raw_supply (current_regcache, i, REG_ADDR (state, i));
+ regcache_raw_supply (regcache, i, REG_ADDR (state, i));
thread->fetched_regs = ~0;
}
else
{
- proc_debug (thread, "fetching register %s", REGISTER_NAME (regno));
+ proc_debug (thread, "fetching register %s",
+ gdbarch_register_name (get_regcache_arch (regcache),
+ regno));
- regcache_raw_supply (current_regcache, regno,
+ regcache_raw_supply (regcache, regno,
REG_ADDR (state, regno));
thread->fetched_regs |= (1 << regno);
}
{
proc_debug (thread, "fetching floating-point registers");
- fetch_fpregs (thread);
+ fetch_fpregs (regcache, thread);
}
}
\f
/* Store the whole floating-point state into THREAD using information
from the corresponding (pseudo) registers. */
static void
-store_fpregs (struct proc *thread, int regno)
+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;
}
/* 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);
+ 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 regcache *regcache = current_regcache;
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_lwp (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 < I386_NUM_GREGS || regno == -1)
{
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;
}
if ((thread->fetched_regs & (1 << check_regno))
&& memcpy (REG_ADDR (&old_state, check_regno),
REG_ADDR (state, check_regno),
- register_size (current_gdbarch, 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. */
regcache_raw_supply (regcache, check_regno,
REG_ADDR (state, check_regno));
else
- warning ("... also writing this register! Suspicious...");
+ warning (_("... also writing this register! "
+ "Suspicious..."));
}
}
proc_debug (thread, "storing all registers");
for (i = 0; i < I386_NUM_GREGS; i++)
- if (regcache_valid_p (regcache, i))
- regcache_raw_supply (regcache, i, REG_ADDR (state, 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 (regcache_valid_p (regcache, regno));
- regcache_raw_supply (regcache, regno, REG_ADDR (state, regno));
+ gdb_assert (REG_VALID == regcache_register_status (regcache, regno));
+ regcache_raw_collect (regcache, regno, REG_ADDR (state, regno));
}
/* Restore the T bit. */
{
proc_debug (thread, "storing floating-point registers");
- store_fpregs (thread, regno);
+ store_fpregs (regcache, thread, regno);
}
}
+
+\f
+/* Support for debug registers. */
+
+#ifdef i386_DEBUG_STATE
+/* Get debug registers for thread THREAD. */
+
+static void
+i386_gnu_dr_get (struct i386_debug_state *regs, struct proc *thread)
+{
+ mach_msg_type_number_t count = i386_DEBUG_STATE_COUNT;
+ error_t err;
+
+ err = thread_get_state (thread->port, i386_DEBUG_STATE,
+ (thread_state_t) regs, &count);
+ if (err != 0 || count != i386_DEBUG_STATE_COUNT)
+ warning (_("Couldn't fetch debug state from %s"),
+ proc_string (thread));
+}
+
+/* Set debug registers for thread THREAD. */
+
+static void
+i386_gnu_dr_set (const struct i386_debug_state *regs, struct proc *thread)
+{
+ error_t err;
+
+ err = thread_set_state (thread->port, i386_DEBUG_STATE,
+ (thread_state_t) regs, i386_DEBUG_STATE_COUNT);
+ if (err != 0)
+ warning (_("Couldn't store debug state into %s"),
+ proc_string (thread));
+}
+
+/* Set DR_CONTROL in THREAD. */
+
+static void
+i386_gnu_dr_set_control_one (struct proc *thread, void *arg)
+{
+ unsigned long *control = arg;
+ struct i386_debug_state regs;
+
+ i386_gnu_dr_get (®s, thread);
+ regs.dr[DR_CONTROL] = *control;
+ i386_gnu_dr_set (®s, thread);
+}
+
+/* Set DR_CONTROL to CONTROL in all threads. */
+
+static void
+i386_gnu_dr_set_control (unsigned long control)
+{
+ inf_update_procs (gnu_current_inf);
+ inf_threads (gnu_current_inf, i386_gnu_dr_set_control_one, &control);
+}
+
+/* Parameters to set a debugging address. */
+
+struct reg_addr
+{
+ int regnum; /* Register number (zero based). */
+ CORE_ADDR addr; /* Address. */
+};
+
+/* Set address REGNUM (zero based) to ADDR in THREAD. */
+
+static void
+i386_gnu_dr_set_addr_one (struct proc *thread, void *arg)
+{
+ struct reg_addr *reg_addr = arg;
+ struct i386_debug_state regs;
+
+ i386_gnu_dr_get (®s, thread);
+ regs.dr[reg_addr->regnum] = reg_addr->addr;
+ i386_gnu_dr_set (®s, thread);
+}
+
+/* Set address REGNUM (zero based) to ADDR in all threads. */
+
+static void
+i386_gnu_dr_set_addr (int regnum, CORE_ADDR addr)
+{
+ struct reg_addr reg_addr;
+
+ gdb_assert (DR_FIRSTADDR <= regnum && regnum <= DR_LASTADDR);
+
+ reg_addr.regnum = regnum;
+ reg_addr.addr = addr;
+
+ inf_update_procs (gnu_current_inf);
+ inf_threads (gnu_current_inf, i386_gnu_dr_set_addr_one, ®_addr);
+}
+
+/* Get debug register REGNUM value from only the one LWP of PTID. */
+
+static unsigned long
+i386_gnu_dr_get_reg (ptid_t ptid, int regnum)
+{
+ struct i386_debug_state regs;
+ struct proc *thread;
+
+ /* Make sure we know about new threads. */
+ inf_update_procs (gnu_current_inf);
+
+ thread = inf_tid_to_thread (gnu_current_inf, ptid_get_lwp (ptid));
+ i386_gnu_dr_get (®s, thread);
+
+ return regs.dr[regnum];
+}
+
+/* Return the inferior's debug register REGNUM. */
+
+static CORE_ADDR
+i386_gnu_dr_get_addr (int regnum)
+{
+ gdb_assert (DR_FIRSTADDR <= regnum && regnum <= DR_LASTADDR);
+
+ return i386_gnu_dr_get_reg (inferior_ptid, regnum);
+}
+
+/* Get DR_STATUS from only the one thread of INFERIOR_PTID. */
+
+static unsigned long
+i386_gnu_dr_get_status (void)
+{
+ return i386_gnu_dr_get_reg (inferior_ptid, DR_STATUS);
+}
+
+/* Return the inferior's DR7 debug control register. */
+
+static unsigned long
+i386_gnu_dr_get_control (void)
+{
+ return i386_gnu_dr_get_reg (inferior_ptid, DR_CONTROL);
+}
+#endif /* i386_DEBUG_STATE */
+
+/* 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 ();
+
+#ifdef i386_DEBUG_STATE
+ x86_use_watchpoints (t);
+
+ x86_dr_low.set_control = i386_gnu_dr_set_control;
+ gdb_assert (DR_FIRSTADDR == 0 && DR_LASTADDR < i386_DEBUG_STATE_COUNT);
+ x86_dr_low.set_addr = i386_gnu_dr_set_addr;
+ x86_dr_low.get_addr = i386_gnu_dr_get_addr;
+ x86_dr_low.get_status = i386_gnu_dr_get_status;
+ x86_dr_low.get_control = i386_gnu_dr_get_control;
+ x86_set_debug_register_length (4);
+#endif /* i386_DEBUG_STATE */
+
+ t->to_fetch_registers = gnu_fetch_registers;
+ t->to_store_registers = gnu_store_registers;
+
+ /* Register the target. */
+ add_target (t);
+}
projects / platform / upstream / binutils.git / blobdiff