/* Low level interface to i386 running the GNU Hurd.
- Copyright (C) 1992, 1995, 1996, 2000 Free Software Foundation, Inc.
+
+ Copyright (C) 1992-2015 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 <assert.h>
-#include <stdio.h>
-#include <errno.h>
+#include "regcache.h"
#include <mach.h>
#include <mach_error.h>
#include <mach/message.h>
#include <mach/exception.h>
-#include "gnu-nat.h"
+#include "i386-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];
-};
+#include "gnu-nat.h"
+#include "inf-child.h"
+#include "i387-tdep.h"
-\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])
\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);
- }
}
/* 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, inferior_pid);
+ 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",
- inferior_pid);
+ 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, inferior_pid);
+ 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",
- inferior_pid);
+ 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));
- 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);
}
}
+
+\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 / deliverable / binutils-gdb.git / blobdiff