/* Native-dependent code for GNU/Linux on MIPS processors.
- Copyright (C) 2001, 2002, 2003, 2004, 2005, 2006, 2007
- Free Software Foundation, Inc.
+ Copyright (C) 2001-2015 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., 51 Franklin Street, Fifth Floor,
- Boston, MA 02110-1301, USA. */
+ along with this program. If not, see <http://www.gnu.org/licenses/>. */
#include "defs.h"
+#include "command.h"
+#include "gdbcmd.h"
#include "inferior.h"
#include "mips-tdep.h"
#include "target.h"
#include "linux-nat.h"
#include "mips-linux-tdep.h"
#include "target-descriptions.h"
-#include "xml-support.h"
#include "gdb_proc_service.h"
#include "gregset.h"
#include <sgidefs.h>
-#include <sys/ptrace.h>
+#include "nat/gdb_ptrace.h"
+#include <asm/ptrace.h>
+
+#include "nat/mips-linux-watch.h"
+
+#include "features/mips-linux.c"
+#include "features/mips-dsp-linux.c"
+#include "features/mips64-linux.c"
+#include "features/mips64-dsp-linux.c"
#ifndef PTRACE_GET_THREAD_AREA
#define PTRACE_GET_THREAD_AREA 25
/* Saved function pointers to fetch and store a single register using
PTRACE_PEEKUSER and PTRACE_POKEUSER. */
-void (*super_fetch_registers) (struct regcache *, int);
-void (*super_store_registers) (struct regcache *, int);
+static void (*super_fetch_registers) (struct target_ops *,
+ struct regcache *, int);
+static void (*super_store_registers) (struct target_ops *,
+ struct regcache *, int);
+
+static void (*super_close) (struct target_ops *);
/* Map gdb internal register number to ptrace ``address''.
These ``addresses'' are normally defined in <asm/ptrace.h>.
{
CORE_ADDR regaddr;
- if (regno < 0 || regno >= gdbarch_num_regs (current_gdbarch))
+ if (regno < 0 || regno >= gdbarch_num_regs (gdbarch))
error (_("Bogon register number %d."), regno);
if (regno > MIPS_ZERO_REGNUM && regno < MIPS_ZERO_REGNUM + 32)
regaddr = FPC_CSR;
else if (regno == mips_regnum (gdbarch)->fp_implementation_revision)
regaddr = store? (CORE_ADDR) -1 : FPC_EIR;
+ else if (mips_regnum (gdbarch)->dspacc != -1
+ && regno >= mips_regnum (gdbarch)->dspacc
+ && regno < mips_regnum (gdbarch)->dspacc + 6)
+ regaddr = DSP_BASE + (regno - mips_regnum (gdbarch)->dspacc);
+ else if (regno == mips_regnum (gdbarch)->dspctl)
+ regaddr = DSP_CONTROL;
else if (mips_linux_restart_reg_p (gdbarch) && regno == MIPS_RESTART_REGNUM)
regaddr = 0;
else
{
CORE_ADDR regaddr;
- if (regno < 0 || regno >= gdbarch_num_regs (current_gdbarch))
+ if (regno < 0 || regno >= gdbarch_num_regs (gdbarch))
error (_("Bogon register number %d."), regno);
if (regno > MIPS_ZERO_REGNUM && regno < MIPS_ZERO_REGNUM + 32)
regaddr = regno;
else if ((regno >= mips_regnum (gdbarch)->fp0)
&& (regno < mips_regnum (gdbarch)->fp0 + 32))
- regaddr = MIPS64_FPR_BASE + (regno - gdbarch_fp0_regnum (current_gdbarch));
+ regaddr = MIPS64_FPR_BASE + (regno - gdbarch_fp0_regnum (gdbarch));
else if (regno == mips_regnum (gdbarch)->pc)
regaddr = MIPS64_PC;
else if (regno == mips_regnum (gdbarch)->cause)
regaddr = MIPS64_FPC_CSR;
else if (regno == mips_regnum (gdbarch)->fp_implementation_revision)
regaddr = store? (CORE_ADDR) -1 : MIPS64_FPC_EIR;
+ else if (mips_regnum (gdbarch)->dspacc != -1
+ && regno >= mips_regnum (gdbarch)->dspacc
+ && regno < mips_regnum (gdbarch)->dspacc + 6)
+ regaddr = DSP_BASE + (regno - mips_regnum (gdbarch)->dspacc);
+ else if (regno == mips_regnum (gdbarch)->dspctl)
+ regaddr = DSP_CONTROL;
else if (mips_linux_restart_reg_p (gdbarch) && regno == MIPS_RESTART_REGNUM)
regaddr = 0;
else
void
supply_gregset (struct regcache *regcache, const gdb_gregset_t *gregsetp)
{
- if (mips_isa_regsize (current_gdbarch) == 4)
+ if (mips_isa_regsize (get_regcache_arch (regcache)) == 4)
mips_supply_gregset (regcache, (const mips_elf_gregset_t *) gregsetp);
else
mips64_supply_gregset (regcache, (const mips64_elf_gregset_t *) gregsetp);
fill_gregset (const struct regcache *regcache,
gdb_gregset_t *gregsetp, int regno)
{
- if (mips_isa_regsize (current_gdbarch) == 4)
+ if (mips_isa_regsize (get_regcache_arch (regcache)) == 4)
mips_fill_gregset (regcache, (mips_elf_gregset_t *) gregsetp, regno);
else
mips64_fill_gregset (regcache, (mips64_elf_gregset_t *) gregsetp, regno);
void
supply_fpregset (struct regcache *regcache, const gdb_fpregset_t *fpregsetp)
{
- if (mips_isa_regsize (current_gdbarch) == 4)
+ if (mips_isa_regsize (get_regcache_arch (regcache)) == 4)
mips_supply_fpregset (regcache, (const mips_elf_fpregset_t *) fpregsetp);
else
- mips64_supply_fpregset (regcache, (const mips64_elf_fpregset_t *) fpregsetp);
+ mips64_supply_fpregset (regcache,
+ (const mips64_elf_fpregset_t *) fpregsetp);
}
void
fill_fpregset (const struct regcache *regcache,
gdb_fpregset_t *fpregsetp, int regno)
{
- if (mips_isa_regsize (current_gdbarch) == 4)
+ if (mips_isa_regsize (get_regcache_arch (regcache)) == 4)
mips_fill_fpregset (regcache, (mips_elf_fpregset_t *) fpregsetp, regno);
else
- mips64_fill_fpregset (regcache, (mips64_elf_fpregset_t *) fpregsetp, regno);
+ mips64_fill_fpregset (regcache,
+ (mips64_elf_fpregset_t *) fpregsetp, regno);
}
using PTRACE_GETREGS et al. */
static void
-mips64_linux_regsets_fetch_registers (struct regcache *regcache, int regno)
+mips64_linux_regsets_fetch_registers (struct target_ops *ops,
+ struct regcache *regcache, int regno)
{
- int is_fp;
+ struct gdbarch *gdbarch = get_regcache_arch (regcache);
+ int is_fp, is_dsp;
+ int have_dsp;
+ int regi;
int tid;
- if (regno >= mips_regnum (current_gdbarch)->fp0
- && regno <= mips_regnum (current_gdbarch)->fp0 + 32)
+ if (regno >= mips_regnum (gdbarch)->fp0
+ && regno <= mips_regnum (gdbarch)->fp0 + 32)
is_fp = 1;
- else if (regno == mips_regnum (current_gdbarch)->fp_control_status)
+ else if (regno == mips_regnum (gdbarch)->fp_control_status)
is_fp = 1;
- else if (regno == mips_regnum (current_gdbarch)->fp_implementation_revision)
+ else if (regno == mips_regnum (gdbarch)->fp_implementation_revision)
is_fp = 1;
else
is_fp = 0;
+ /* DSP registers are optional and not a part of any set. */
+ have_dsp = mips_regnum (gdbarch)->dspctl != -1;
+ if (!have_dsp)
+ is_dsp = 0;
+ else if (regno >= mips_regnum (gdbarch)->dspacc
+ && regno < mips_regnum (gdbarch)->dspacc + 6)
+ is_dsp = 1;
+ else if (regno == mips_regnum (gdbarch)->dspctl)
+ is_dsp = 1;
+ else
+ is_dsp = 0;
+
tid = ptid_get_lwp (inferior_ptid);
if (tid == 0)
tid = ptid_get_pid (inferior_ptid);
- if (regno == -1 || !is_fp)
+ if (regno == -1 || (!is_fp && !is_dsp))
{
mips64_elf_gregset_t regs;
mips64_supply_fpregset (regcache,
(const mips64_elf_fpregset_t *) &fp_regs);
}
+
+ if (is_dsp)
+ super_fetch_registers (ops, regcache, regno);
+ else if (regno == -1 && have_dsp)
+ {
+ for (regi = mips_regnum (gdbarch)->dspacc;
+ regi < mips_regnum (gdbarch)->dspacc + 6;
+ regi++)
+ super_fetch_registers (ops, regcache, regi);
+ super_fetch_registers (ops, regcache, mips_regnum (gdbarch)->dspctl);
+ }
}
/* Store REGNO (or all registers if REGNO == -1) to the target
using PTRACE_SETREGS et al. */
static void
-mips64_linux_regsets_store_registers (const struct regcache *regcache, int regno)
+mips64_linux_regsets_store_registers (struct target_ops *ops,
+ struct regcache *regcache, int regno)
{
- int is_fp;
+ struct gdbarch *gdbarch = get_regcache_arch (regcache);
+ int is_fp, is_dsp;
+ int have_dsp;
+ int regi;
int tid;
- if (regno >= mips_regnum (current_gdbarch)->fp0
- && regno <= mips_regnum (current_gdbarch)->fp0 + 32)
+ if (regno >= mips_regnum (gdbarch)->fp0
+ && regno <= mips_regnum (gdbarch)->fp0 + 32)
is_fp = 1;
- else if (regno == mips_regnum (current_gdbarch)->fp_control_status)
+ else if (regno == mips_regnum (gdbarch)->fp_control_status)
is_fp = 1;
- else if (regno == mips_regnum (current_gdbarch)->fp_implementation_revision)
+ else if (regno == mips_regnum (gdbarch)->fp_implementation_revision)
is_fp = 1;
else
is_fp = 0;
+ /* DSP registers are optional and not a part of any set. */
+ have_dsp = mips_regnum (gdbarch)->dspctl != -1;
+ if (!have_dsp)
+ is_dsp = 0;
+ else if (regno >= mips_regnum (gdbarch)->dspacc
+ && regno < mips_regnum (gdbarch)->dspacc + 6)
+ is_dsp = 1;
+ else if (regno == mips_regnum (gdbarch)->dspctl)
+ is_dsp = 1;
+ else
+ is_dsp = 0;
+
tid = ptid_get_lwp (inferior_ptid);
if (tid == 0)
tid = ptid_get_pid (inferior_ptid);
- if (regno == -1 || !is_fp)
+ if (regno == -1 || (!is_fp && !is_dsp))
{
mips64_elf_gregset_t regs;
(PTRACE_TYPE_ARG3) &fp_regs) == -1)
perror_with_name (_("Couldn't set FP registers"));
}
+
+ if (is_dsp)
+ super_store_registers (ops, regcache, regno);
+ else if (regno == -1 && have_dsp)
+ {
+ for (regi = mips_regnum (gdbarch)->dspacc;
+ regi < mips_regnum (gdbarch)->dspacc + 6;
+ regi++)
+ super_store_registers (ops, regcache, regi);
+ super_store_registers (ops, regcache, mips_regnum (gdbarch)->dspctl);
+ }
}
/* Fetch REGNO (or all registers if REGNO == -1) from the target
using any working method. */
static void
-mips64_linux_fetch_registers (struct regcache *regcache, int regnum)
+mips64_linux_fetch_registers (struct target_ops *ops,
+ struct regcache *regcache, int regnum)
{
/* Unless we already know that PTRACE_GETREGS does not work, try it. */
if (have_ptrace_regsets)
- mips64_linux_regsets_fetch_registers (regcache, regnum);
+ mips64_linux_regsets_fetch_registers (ops, regcache, regnum);
/* If we know, or just found out, that PTRACE_GETREGS does not work, fall
back to PTRACE_PEEKUSER. */
if (!have_ptrace_regsets)
- super_fetch_registers (regcache, regnum);
+ super_fetch_registers (ops, regcache, regnum);
}
/* Store REGNO (or all registers if REGNO == -1) to the target
using any working method. */
static void
-mips64_linux_store_registers (struct regcache *regcache, int regnum)
+mips64_linux_store_registers (struct target_ops *ops,
+ struct regcache *regcache, int regnum)
{
/* Unless we already know that PTRACE_GETREGS does not work, try it. */
if (have_ptrace_regsets)
- mips64_linux_regsets_store_registers (regcache, regnum);
+ mips64_linux_regsets_store_registers (ops, regcache, regnum);
/* If we know, or just found out, that PTRACE_GETREGS does not work, fall
back to PTRACE_PEEKUSER. */
if (!have_ptrace_regsets)
- super_store_registers (regcache, regnum);
+ super_store_registers (ops, regcache, regnum);
}
/* Return the address in the core dump or inferior of register
return mips_linux_register_addr (gdbarch, regno, store_p);
}
-static LONGEST (*super_xfer_partial) (struct target_ops *, enum target_object,
- const char *, gdb_byte *, const gdb_byte *,
- ULONGEST, LONGEST);
+static const struct target_desc *
+mips_linux_read_description (struct target_ops *ops)
+{
+ static int have_dsp = -1;
+
+ if (have_dsp < 0)
+ {
+ int tid;
+
+ tid = ptid_get_lwp (inferior_ptid);
+ if (tid == 0)
+ tid = ptid_get_pid (inferior_ptid);
+
+ errno = 0;
+ ptrace (PTRACE_PEEKUSER, tid, DSP_CONTROL, 0);
+ switch (errno)
+ {
+ case 0:
+ have_dsp = 1;
+ break;
+ case EIO:
+ have_dsp = 0;
+ break;
+ default:
+ perror_with_name (_("Couldn't check DSP support"));
+ break;
+ }
+ }
+
+ /* Report that target registers are a size we know for sure
+ that we can get from ptrace. */
+ if (_MIPS_SIM == _ABIO32)
+ return have_dsp ? tdesc_mips_dsp_linux : tdesc_mips_linux;
+ else
+ return have_dsp ? tdesc_mips64_dsp_linux : tdesc_mips64_linux;
+}
+
+/* -1 if the kernel and/or CPU do not support watch registers.
+ 1 if watch_readback is valid and we can read style, num_valid
+ and the masks.
+ 0 if we need to read the watch_readback. */
-static LONGEST
-mips_linux_xfer_partial (struct target_ops *ops,
- enum target_object object,
- const char *annex,
- gdb_byte *readbuf, const gdb_byte *writebuf,
- ULONGEST offset, LONGEST len)
+static int watch_readback_valid;
+
+/* Cached watch register read values. */
+
+static struct pt_watch_regs watch_readback;
+
+static struct mips_watchpoint *current_watches;
+
+/* The current set of watch register values for writing the
+ registers. */
+
+static struct pt_watch_regs watch_mirror;
+
+static void
+mips_show_dr (const char *func, CORE_ADDR addr,
+ int len, enum target_hw_bp_type type)
{
- if (object == TARGET_OBJECT_AVAILABLE_FEATURES)
+ int i;
+
+ puts_unfiltered (func);
+ if (addr || len)
+ printf_unfiltered (" (addr=%s, len=%d, type=%s)",
+ paddress (target_gdbarch (), addr), len,
+ type == hw_write ? "data-write"
+ : (type == hw_read ? "data-read"
+ : (type == hw_access ? "data-read/write"
+ : (type == hw_execute ? "instruction-execute"
+ : "??unknown??"))));
+ puts_unfiltered (":\n");
+
+ for (i = 0; i < MAX_DEBUG_REGISTER; i++)
+ printf_unfiltered ("\tDR%d: lo=%s, hi=%s\n", i,
+ paddress (target_gdbarch (),
+ mips_linux_watch_get_watchlo (&watch_mirror,
+ i)),
+ paddress (target_gdbarch (),
+ mips_linux_watch_get_watchhi (&watch_mirror,
+ i)));
+}
+
+/* Target to_can_use_hw_breakpoint implementation. Return 1 if we can
+ handle the specified watch type. */
+
+static int
+mips_linux_can_use_hw_breakpoint (struct target_ops *self,
+ enum bptype type,
+ int cnt, int ot)
+{
+ int i;
+ uint32_t wanted_mask, irw_mask;
+
+ if (!mips_linux_read_watch_registers (ptid_get_lwp (inferior_ptid),
+ &watch_readback,
+ &watch_readback_valid, 0))
+ return 0;
+
+ switch (type)
+ {
+ case bp_hardware_watchpoint:
+ wanted_mask = W_MASK;
+ break;
+ case bp_read_watchpoint:
+ wanted_mask = R_MASK;
+ break;
+ case bp_access_watchpoint:
+ wanted_mask = R_MASK | W_MASK;
+ break;
+ default:
+ return 0;
+ }
+
+ for (i = 0;
+ i < mips_linux_watch_get_num_valid (&watch_readback) && cnt;
+ i++)
{
- if (annex != NULL && strcmp (annex, "target.xml") == 0)
+ irw_mask = mips_linux_watch_get_irw_mask (&watch_readback, i);
+ if ((irw_mask & wanted_mask) == wanted_mask)
+ cnt--;
+ }
+ return (cnt == 0) ? 1 : 0;
+}
+
+/* Target to_stopped_by_watchpoint implementation. Return 1 if
+ stopped by watchpoint. The watchhi R and W bits indicate the watch
+ register triggered. */
+
+static int
+mips_linux_stopped_by_watchpoint (struct target_ops *ops)
+{
+ int n;
+ int num_valid;
+
+ if (!mips_linux_read_watch_registers (ptid_get_lwp (inferior_ptid),
+ &watch_readback,
+ &watch_readback_valid, 1))
+ return 0;
+
+ num_valid = mips_linux_watch_get_num_valid (&watch_readback);
+
+ for (n = 0; n < MAX_DEBUG_REGISTER && n < num_valid; n++)
+ if (mips_linux_watch_get_watchhi (&watch_readback, n) & (R_MASK | W_MASK))
+ return 1;
+
+ return 0;
+}
+
+/* Target to_stopped_data_address implementation. Set the address
+ where the watch triggered (if known). Return 1 if the address was
+ known. */
+
+static int
+mips_linux_stopped_data_address (struct target_ops *t, CORE_ADDR *paddr)
+{
+ /* On mips we don't know the low order 3 bits of the data address,
+ so we must return false. */
+ return 0;
+}
+
+/* Target to_region_ok_for_hw_watchpoint implementation. Return 1 if
+ the specified region can be covered by the watch registers. */
+
+static int
+mips_linux_region_ok_for_hw_watchpoint (struct target_ops *self,
+ CORE_ADDR addr, int len)
+{
+ struct pt_watch_regs dummy_regs;
+ int i;
+
+ if (!mips_linux_read_watch_registers (ptid_get_lwp (inferior_ptid),
+ &watch_readback,
+ &watch_readback_valid, 0))
+ return 0;
+
+ dummy_regs = watch_readback;
+ /* Clear them out. */
+ for (i = 0; i < mips_linux_watch_get_num_valid (&dummy_regs); i++)
+ mips_linux_watch_set_watchlo (&dummy_regs, i, 0);
+ return mips_linux_watch_try_one_watch (&dummy_regs, addr, len, 0);
+}
+
+/* Write the mirrored watch register values for each thread. */
+
+static int
+write_watchpoint_regs (void)
+{
+ struct lwp_info *lp;
+ int tid;
+
+ ALL_LWPS (lp)
+ {
+ tid = ptid_get_lwp (lp->ptid);
+ if (ptrace (PTRACE_SET_WATCH_REGS, tid, &watch_mirror, NULL) == -1)
+ perror_with_name (_("Couldn't write debug register"));
+ }
+ return 0;
+}
+
+/* linux_nat new_thread implementation. Write the mirrored watch
+ register values for the new thread. */
+
+static void
+mips_linux_new_thread (struct lwp_info *lp)
+{
+ int tid;
+
+ if (!mips_linux_read_watch_registers (ptid_get_lwp (inferior_ptid),
+ &watch_readback,
+ &watch_readback_valid, 0))
+ return;
+
+ tid = ptid_get_lwp (lp->ptid);
+ if (ptrace (PTRACE_SET_WATCH_REGS, tid, &watch_mirror, NULL) == -1)
+ perror_with_name (_("Couldn't write debug register"));
+}
+
+/* Target to_insert_watchpoint implementation. Try to insert a new
+ watch. Return zero on success. */
+
+static int
+mips_linux_insert_watchpoint (struct target_ops *self,
+ CORE_ADDR addr, int len,
+ enum target_hw_bp_type type,
+ struct expression *cond)
+{
+ struct pt_watch_regs regs;
+ struct mips_watchpoint *new_watch;
+ struct mips_watchpoint **pw;
+
+ int i;
+ int retval;
+
+ if (!mips_linux_read_watch_registers (ptid_get_lwp (inferior_ptid),
+ &watch_readback,
+ &watch_readback_valid, 0))
+ return -1;
+
+ if (len <= 0)
+ return -1;
+
+ regs = watch_readback;
+ /* Add the current watches. */
+ mips_linux_watch_populate_regs (current_watches, ®s);
+
+ /* Now try to add the new watch. */
+ if (!mips_linux_watch_try_one_watch (®s, addr, len,
+ mips_linux_watch_type_to_irw (type)))
+ return -1;
+
+ /* It fit. Stick it on the end of the list. */
+ new_watch = XNEW (struct mips_watchpoint);
+ new_watch->addr = addr;
+ new_watch->len = len;
+ new_watch->type = type;
+ new_watch->next = NULL;
+
+ pw = ¤t_watches;
+ while (*pw != NULL)
+ pw = &(*pw)->next;
+ *pw = new_watch;
+
+ watch_mirror = regs;
+ retval = write_watchpoint_regs ();
+
+ if (show_debug_regs)
+ mips_show_dr ("insert_watchpoint", addr, len, type);
+
+ return retval;
+}
+
+/* Target to_remove_watchpoint implementation. Try to remove a watch.
+ Return zero on success. */
+
+static int
+mips_linux_remove_watchpoint (struct target_ops *self,
+ CORE_ADDR addr, int len,
+ enum target_hw_bp_type type,
+ struct expression *cond)
+{
+ int retval;
+ int deleted_one;
+
+ struct mips_watchpoint **pw;
+ struct mips_watchpoint *w;
+
+ /* Search for a known watch that matches. Then unlink and free
+ it. */
+ deleted_one = 0;
+ pw = ¤t_watches;
+ while ((w = *pw))
+ {
+ if (w->addr == addr && w->len == len && w->type == type)
{
- /* Report that target registers are a size we know for sure
- that we can get from ptrace. */
- if (_MIPS_SIM == _ABIO32)
- annex = "mips-linux.xml";
- else
- annex = "mips64-linux.xml";
+ *pw = w->next;
+ xfree (w);
+ deleted_one = 1;
+ break;
}
+ pw = &(w->next);
+ }
- return xml_builtin_xfer_partial (annex, readbuf, writebuf, offset, len);
+ if (!deleted_one)
+ return -1; /* We don't know about it, fail doing nothing. */
+
+ /* At this point watch_readback is known to be valid because we
+ could not have added the watch without reading it. */
+ gdb_assert (watch_readback_valid == 1);
+
+ watch_mirror = watch_readback;
+ mips_linux_watch_populate_regs (current_watches, &watch_mirror);
+
+ retval = write_watchpoint_regs ();
+
+ if (show_debug_regs)
+ mips_show_dr ("remove_watchpoint", addr, len, type);
+
+ return retval;
+}
+
+/* Target to_close implementation. Free any watches and call the
+ super implementation. */
+
+static void
+mips_linux_close (struct target_ops *self)
+{
+ struct mips_watchpoint *w;
+ struct mips_watchpoint *nw;
+
+ /* Clean out the current_watches list. */
+ w = current_watches;
+ while (w)
+ {
+ nw = w->next;
+ xfree (w);
+ w = nw;
}
+ current_watches = NULL;
- return super_xfer_partial (ops, object, annex, readbuf, writebuf,
- offset, len);
+ if (super_close)
+ super_close (self);
}
void _initialize_mips_linux_nat (void);
void
_initialize_mips_linux_nat (void)
{
- struct target_ops *t = linux_trad_target (mips_linux_register_u_offset);
+ struct target_ops *t;
+
+ add_setshow_boolean_cmd ("show-debug-regs", class_maintenance,
+ &show_debug_regs, _("\
+Set whether to show variables that mirror the mips debug registers."), _("\
+Show whether to show variables that mirror the mips debug registers."), _("\
+Use \"on\" to enable, \"off\" to disable.\n\
+If enabled, the debug registers values are shown when GDB inserts\n\
+or removes a hardware breakpoint or watchpoint, and when the inferior\n\
+triggers a breakpoint or watchpoint."),
+ NULL,
+ NULL,
+ &maintenance_set_cmdlist,
+ &maintenance_show_cmdlist);
+
+ t = linux_trad_target (mips_linux_register_u_offset);
+
+ super_close = t->to_close;
+ t->to_close = mips_linux_close;
super_fetch_registers = t->to_fetch_registers;
super_store_registers = t->to_store_registers;
t->to_fetch_registers = mips64_linux_fetch_registers;
t->to_store_registers = mips64_linux_store_registers;
- /* Override the default to_xfer_partial. */
- super_xfer_partial = t->to_xfer_partial;
- t->to_xfer_partial = mips_linux_xfer_partial;
+ t->to_can_use_hw_breakpoint = mips_linux_can_use_hw_breakpoint;
+ t->to_remove_watchpoint = mips_linux_remove_watchpoint;
+ t->to_insert_watchpoint = mips_linux_insert_watchpoint;
+ t->to_stopped_by_watchpoint = mips_linux_stopped_by_watchpoint;
+ t->to_stopped_data_address = mips_linux_stopped_data_address;
+ t->to_region_ok_for_hw_watchpoint = mips_linux_region_ok_for_hw_watchpoint;
+
+ t->to_read_description = mips_linux_read_description;
linux_nat_add_target (t);
+ linux_nat_set_new_thread (t, mips_linux_new_thread);
+
+ /* Initialize the standard target descriptions. */
+ initialize_tdesc_mips_linux ();
+ initialize_tdesc_mips_dsp_linux ();
+ initialize_tdesc_mips64_linux ();
+ initialize_tdesc_mips64_dsp_linux ();
}