/* Remote debugging interface for MIPS remote debugging protocol.
- Copyright 1993, 1994, 1995, 1996, 1997, 1998, 1999, 2000, 2001,
- 2002, 2003, 2004 Free Software Foundation, Inc.
+ Copyright (C) 1993, 1994, 1995, 1996, 1997, 1998, 1999, 2000, 2001, 2002,
+ 2003, 2004, 2006, 2007, 2008, 2009, 2010 Free Software Foundation, Inc.
Contributed by Cygnus Support. Written by Ian Lance Taylor
<ian@cygnus.com>.
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 "serial.h"
#include "target.h"
#include "exceptions.h"
-#include "remote-utils.h"
#include "gdb_string.h"
#include "gdb_stat.h"
#include "regcache.h"
#include <ctype.h>
#include "mips-tdep.h"
+#include "gdbthread.h"
\f
/* Breakpoint types. Values 0, 1, and 2 must agree with the watch
static void mips_close (int quitting);
-static void mips_detach (char *args, int from_tty);
+static void mips_detach (struct target_ops *ops, char *args, int from_tty);
-static void mips_resume (ptid_t ptid, int step,
- enum target_signal siggnal);
+static int mips_map_regno (struct gdbarch *, int);
-static ptid_t mips_wait (ptid_t ptid,
- struct target_waitstatus *status);
+static void mips_set_register (int regno, ULONGEST value);
-static int mips_map_regno (int regno);
+static void mips_prepare_to_store (struct regcache *regcache);
-static void mips_fetch_registers (int regno);
-
-static void mips_prepare_to_store (void);
-
-static void mips_store_registers (int regno);
-
-static unsigned int mips_fetch_word (CORE_ADDR addr);
+static int mips_fetch_word (CORE_ADDR addr, unsigned int *valp);
static int mips_store_word (CORE_ADDR addr, unsigned int value,
- char *old_contents);
+ int *old_contents);
-static int mips_xfer_memory (CORE_ADDR memaddr, char *myaddr, int len,
+static int mips_xfer_memory (CORE_ADDR memaddr, gdb_byte *myaddr, int len,
int write,
struct mem_attrib *attrib,
struct target_ops *target);
static void mips_files_info (struct target_ops *ignore);
-static void mips_mourn_inferior (void);
+static void mips_mourn_inferior (struct target_ops *ops);
static int pmon_makeb64 (unsigned long v, char *p, int n, int *chksum);
static int mips_make_srec (char *buffer, int type, CORE_ADDR memaddr,
unsigned char *myaddr, int len);
-static int set_breakpoint (CORE_ADDR addr, int len, enum break_type type);
+static int mips_set_breakpoint (CORE_ADDR addr, int len, enum break_type type);
-static int clear_breakpoint (CORE_ADDR addr, int len, enum break_type type);
+static int mips_clear_breakpoint (CORE_ADDR addr, int len,
+ enum break_type type);
-static int common_breakpoint (int set, CORE_ADDR addr, int len,
- enum break_type type);
+static int mips_common_breakpoint (int set, CORE_ADDR addr, int len,
+ enum break_type type);
/* Forward declarations. */
extern struct target_ops mips_ops;
extern struct target_ops pmon_ops;
extern struct target_ops ddb_ops;
+extern struct target_ops rockhopper_ops;
\f/* *INDENT-OFF* */
/* The MIPS remote debugging interface is built on top of a simple
packet protocol. Each packet is organized as follows:
These are initialized with code in _initialize_remote_mips instead
of static initializers, to make it easier to extend the target_ops
vector later. */
-struct target_ops mips_ops, pmon_ops, ddb_ops, lsi_ops;
+struct target_ops mips_ops, pmon_ops, ddb_ops, rockhopper_ops, lsi_ops;
enum mips_monitor_type
{
MON_PMON, /* 3.0.83 [COGENT,EB,FP,NET] Algorithmics Ltd. Nov 9 1995 17:19:50 */
MON_DDB, /* 2.7.473 [DDBVR4300,EL,FP,NET] Risq Modular Systems, Thu Jun 6 09:28:40 PDT 1996 */
MON_LSI, /* 4.3.12 [EB,FP], LSI LOGIC Corp. Tue Feb 25 13:22:14 1997 */
+ MON_ROCKHOPPER,
/* Last and unused value, for sizing vectors, etc. */
MON_LAST
};
of warnings returned by PMON when hardware breakpoints are used. */
static int monitor_warnings;
+/* This is the ptid we use while we're connected to the remote. Its
+ value is arbitrary, as the remote-mips target doesn't have a notion of
+ processes or threads, but we need something non-null to place in
+ inferior_ptid. */
+static ptid_t remote_mips_ptid;
+
+/* Close any ports which might be open. Reset certain globals indicating
+ the state of those ports. */
static void
close_ports (void)
close_ports ();
printf_unfiltered ("Ending remote MIPS debugging.\n");
- target_mourn_inferior ();
+ if (!ptid_equal (inferior_ptid, null_ptid))
+ target_mourn_inferior ();
deprecated_throw_reason (RETURN_ERROR);
}
}
+/* Read P as a hex value. Return true if every character made sense,
+ storing the result in *RESULT. Leave *RESULT unchanged otherwise. */
+
+static int
+read_hex_value (const char *p, ULONGEST *result)
+{
+ ULONGEST retval;
+
+ retval = 0;
+ while (*p != 0)
+ {
+ retval <<= 4;
+ if (*p >= '0' && *p <= '9')
+ retval |= *p - '0';
+ else if (*p >= 'A' && *p <= 'F')
+ retval |= *p - 'A' + 10;
+ else if (*p >= 'a' && *p <= 'f')
+ retval |= *p - 'a' + 10;
+ else
+ return 0;
+ p++;
+ }
+ *result = retval;
+ return 1;
+}
+
+
/* Wait until STRING shows up in mips_desc. Returns 1 if successful, else 0 if
timed out. TIMEOUT specifies timeout value in seconds.
*/
int timeout,
char *buff)
{
+ int addr_size = gdbarch_addr_bit (target_gdbarch) / 8;
char myBuff[DATA_MAXLEN + 1];
+ char response_string[17];
int len;
int rpid;
char rcmd;
int rerrflg;
- unsigned long rresponse;
+ ULONGEST rresponse;
if (buff == (char *) NULL)
buff = myBuff;
if (mips_need_reply)
internal_error (__FILE__, __LINE__,
_("mips_request: Trying to send command before reply"));
- sprintf (buff, "0x0 %c 0x%s 0x%s", cmd, paddr_nz (addr), paddr_nz (data));
+ /* 'T' sets a register to a 64-bit value, so make sure we use
+ the right conversion function. */
+ if (cmd == 'T')
+ sprintf (buff, "0x0 %c 0x%s 0x%s", cmd,
+ phex_nz (addr, addr_size), phex_nz (data, 8));
+ else
+ sprintf (buff, "0x0 %c 0x%s 0x%s", cmd,
+ phex_nz (addr, addr_size), phex_nz (data, addr_size));
+
mips_send_packet (buff, 1);
mips_need_reply = 1;
}
len = mips_receive_packet (buff, 1, timeout);
buff[len] = '\0';
- if (sscanf (buff, "0x%x %c 0x%x 0x%lx",
- &rpid, &rcmd, &rerrflg, &rresponse) != 4
+ if (sscanf (buff, "0x%x %c 0x%x 0x%16s",
+ &rpid, &rcmd, &rerrflg, response_string) != 4
+ || !read_hex_value (response_string, &rresponse)
|| (cmd != '\0' && rcmd != cmd))
mips_error ("Bad response from remote board");
return rresponse;
}
+/* Cleanup associated with mips_initialize(). */
+
static void
mips_initialize_cleanups (void *arg)
{
mips_initializing = 0;
}
+/* Cleanup associated with mips_exit_debug(). */
+
static void
mips_exit_cleanups (void *arg)
{
mips_exiting = 0;
}
+/* Send a command and wait for that command to be echoed back. Wait,
+ too, for the following prompt. */
+
static void
mips_send_command (const char *cmd, int prompt)
{
}
/* Enter remote (dbx) debug mode: */
+
static void
mips_enter_debug (void)
{
}
/* Exit remote (dbx) debug mode, returning to the monitor prompt: */
+
static int
mips_exit_debug (void)
{
mips_exiting = 1;
- if (mips_monitor != MON_IDT)
+ if (mips_monitor != MON_IDT && mips_monitor != MON_ROCKHOPPER)
{
/* The DDB (NEC) and MiniRISC (LSI) versions of PMON exit immediately,
so we do not get a reply to this command: */
/* Clear all breakpoints: */
if ((mips_monitor == MON_IDT
- && clear_breakpoint (-1, 0, BREAK_UNUSED) == 0)
+ && mips_clear_breakpoint (-1, 0, BREAK_UNUSED) == 0)
|| mips_monitor == MON_LSI)
monitor_supports_breakpoints = 1;
else
}
/* Open a connection to the remote board. */
+
static void
common_open (struct target_ops *ops, char *name, int from_tty,
enum mips_monitor_type new_monitor,
/* Parse the serial port name, the optional TFTP name, and the
optional local TFTP name. */
- if ((argv = buildargv (name)) == NULL)
- nomem (0);
+ argv = gdb_buildargv (name);
make_cleanup_freeargv (argv);
serial_port_name = xstrdup (argv[0]);
/* Switch to using remote target now. */
push_target (ops);
- /* FIXME: Should we call start_remote here? */
+ inferior_ptid = remote_mips_ptid;
+ inferior_appeared (current_inferior (), ptid_get_pid (inferior_ptid));
+ add_thread_silent (inferior_ptid);
/* Try to figure out the processor model if possible. */
deprecated_mips_set_processor_regs_hack ();
of some sort. That doesn't happen here (in fact, it may not be
possible to get the monitor to send the appropriate packet). */
- flush_cached_frames ();
+ reinit_frame_cache ();
registers_changed ();
- stop_pc = read_pc ();
+ stop_pc = regcache_read_pc (get_current_regcache ());
print_stack_frame (get_selected_frame (NULL), 0, SRC_AND_LOC);
xfree (serial_port_name);
}
+/* Open a connection to an IDT board. */
+
static void
mips_open (char *name, int from_tty)
{
const char *monitor_prompt = NULL;
- if (TARGET_ARCHITECTURE != NULL
- && TARGET_ARCHITECTURE->arch == bfd_arch_mips)
+ if (gdbarch_bfd_arch_info (target_gdbarch) != NULL
+ && gdbarch_bfd_arch_info (target_gdbarch)->arch == bfd_arch_mips)
{
- switch (TARGET_ARCHITECTURE->mach)
+ switch (gdbarch_bfd_arch_info (target_gdbarch)->mach)
{
case bfd_mach_mips4100:
case bfd_mach_mips4300:
common_open (&mips_ops, name, from_tty, MON_IDT, monitor_prompt);
}
+/* Open a connection to a PMON board. */
+
static void
pmon_open (char *name, int from_tty)
{
common_open (&pmon_ops, name, from_tty, MON_PMON, "PMON> ");
}
+/* Open a connection to a DDB board. */
+
static void
ddb_open (char *name, int from_tty)
{
common_open (&ddb_ops, name, from_tty, MON_DDB, "NEC010>");
}
+/* Open a connection to a rockhopper board. */
+
+static void
+rockhopper_open (char *name, int from_tty)
+{
+ common_open (&rockhopper_ops, name, from_tty, MON_ROCKHOPPER, "NEC01>");
+}
+
+/* Open a connection to an LSI board. */
+
static void
lsi_open (char *name, int from_tty)
{
close_ports ();
}
+
+ generic_mourn_inferior ();
}
/* Detach from the remote board. */
static void
-mips_detach (char *args, int from_tty)
+mips_detach (struct target_ops *ops, char *args, int from_tty)
{
if (args)
error ("Argument given to \"detach\" when remotely debugging.");
where PMON does return a reply. */
static void
-mips_resume (ptid_t ptid, int step, enum target_signal siggnal)
+mips_resume (struct target_ops *ops,
+ ptid_t ptid, int step, enum target_signal siggnal)
{
int err;
/* Return the signal corresponding to SIG, where SIG is the number which
the MIPS protocol uses for the signal. */
+
static enum target_signal
mips_signal_from_protocol (int sig)
{
return (enum target_signal) sig;
}
+/* Set the register designated by REGNO to the value designated by VALUE. */
+
+static void
+mips_set_register (int regno, ULONGEST value)
+{
+ char buf[MAX_REGISTER_SIZE];
+ struct regcache *regcache = get_current_regcache ();
+ struct gdbarch *gdbarch = get_regcache_arch (regcache);
+ enum bfd_endian byte_order = gdbarch_byte_order (gdbarch);
+
+ /* We got the number the register holds, but gdb expects to see a
+ value in the target byte ordering. */
+
+ if (mips_monitor != MON_ROCKHOPPER
+ && (regno == mips_regnum (gdbarch)->pc || regno < 32))
+ /* Some 64-bit boards have monitors that only send the bottom 32 bits.
+ In such cases we can only really debug 32-bit code properly so,
+ when reading a GPR or the PC, assume that the full 64-bit
+ value is the sign extension of the lower 32 bits. */
+ store_signed_integer (buf, register_size (gdbarch, regno), byte_order,
+ value);
+ else
+ store_unsigned_integer (buf, register_size (gdbarch, regno), byte_order,
+ value);
+
+ regcache_raw_supply (regcache, regno, buf);
+}
+
/* Wait until the remote stops, and return a wait status. */
static ptid_t
-mips_wait (ptid_t ptid, struct target_waitstatus *status)
+mips_wait (struct target_ops *ops,
+ ptid_t ptid, struct target_waitstatus *status, int options)
{
int rstatus;
int err;
char buff[DATA_MAXLEN];
- int rpc, rfp, rsp;
- char flags[20];
+ ULONGEST rpc, rfp, rsp;
+ char pc_string[17], fp_string[17], sp_string[17], flags[20];
int nfields;
int i;
/* See if we got back extended status. If so, pick out the pc, fp, sp, etc... */
- nfields = sscanf (buff, "0x%*x %*c 0x%*x 0x%*x 0x%x 0x%x 0x%x 0x%*x %s",
- &rpc, &rfp, &rsp, flags);
- if (nfields >= 3)
+ nfields = sscanf (buff, "0x%*x %*c 0x%*x 0x%*x 0x%16s 0x%16s 0x%16s 0x%*x %s",
+ pc_string, fp_string, sp_string, flags);
+ if (nfields >= 3
+ && read_hex_value (pc_string, &rpc)
+ && read_hex_value (fp_string, &rfp)
+ && read_hex_value (sp_string, &rsp))
{
- char buf[MAX_REGISTER_SIZE];
-
- store_unsigned_integer (buf, register_size (current_gdbarch, PC_REGNUM), rpc);
- regcache_raw_supply (current_regcache, PC_REGNUM, buf);
-
- store_unsigned_integer (buf, register_size (current_gdbarch, PC_REGNUM), rfp);
- regcache_raw_supply (current_regcache, 30, buf); /* This register they are avoiding and so it is unnamed */
-
- store_unsigned_integer (buf, register_size (current_gdbarch, SP_REGNUM), rsp);
- regcache_raw_supply (current_regcache, SP_REGNUM, buf);
+ struct regcache *regcache = get_current_regcache ();
+ struct gdbarch *gdbarch = get_regcache_arch (regcache);
- store_unsigned_integer (buf, register_size (current_gdbarch, DEPRECATED_FP_REGNUM), 0);
- regcache_raw_supply (current_regcache, DEPRECATED_FP_REGNUM, buf);
+ mips_set_register (gdbarch_pc_regnum (gdbarch), rpc);
+ mips_set_register (30, rfp);
+ mips_set_register (gdbarch_sp_regnum (gdbarch), rsp);
if (nfields == 9)
{
fetch breakpoint, not a data watchpoint. FIXME when PMON
provides some way to tell us what type of breakpoint it is. */
int i;
- CORE_ADDR pc = read_pc ();
+ CORE_ADDR pc = regcache_read_pc (get_current_regcache ());
hit_watchpoint = 1;
for (i = 0; i < MAX_LSI_BREAKPOINTS; i++)
{
char *func_name;
CORE_ADDR func_start;
- CORE_ADDR pc = read_pc ();
+ CORE_ADDR pc = regcache_read_pc (get_current_regcache ());
find_pc_partial_function (pc, &func_name, &func_start, NULL);
if (func_name != NULL && strcmp (func_name, "_exit") == 0
#define REGNO_OFFSET 96
static int
-mips_map_regno (int regno)
+mips_map_regno (struct gdbarch *gdbarch, int regno)
{
if (regno < 32)
return regno;
- if (regno >= mips_regnum (current_gdbarch)->fp0
- && regno < mips_regnum (current_gdbarch)->fp0 + 32)
- return regno - mips_regnum (current_gdbarch)->fp0 + 32;
- else if (regno == mips_regnum (current_gdbarch)->pc)
+ if (regno >= mips_regnum (gdbarch)->fp0
+ && regno < mips_regnum (gdbarch)->fp0 + 32)
+ return regno - mips_regnum (gdbarch)->fp0 + 32;
+ else if (regno == mips_regnum (gdbarch)->pc)
return REGNO_OFFSET + 0;
- else if (regno == mips_regnum (current_gdbarch)->cause)
+ else if (regno == mips_regnum (gdbarch)->cause)
return REGNO_OFFSET + 1;
- else if (regno == mips_regnum (current_gdbarch)->hi)
+ else if (regno == mips_regnum (gdbarch)->hi)
return REGNO_OFFSET + 2;
- else if (regno == mips_regnum (current_gdbarch)->lo)
+ else if (regno == mips_regnum (gdbarch)->lo)
return REGNO_OFFSET + 3;
- else if (regno == mips_regnum (current_gdbarch)->fp_control_status)
+ else if (regno == mips_regnum (gdbarch)->fp_control_status)
return REGNO_OFFSET + 4;
- else if (regno == mips_regnum (current_gdbarch)->fp_implementation_revision)
+ else if (regno == mips_regnum (gdbarch)->fp_implementation_revision)
return REGNO_OFFSET + 5;
else
/* FIXME: Is there a way to get the status register? */
/* Fetch the remote registers. */
static void
-mips_fetch_registers (int regno)
+mips_fetch_registers (struct target_ops *ops,
+ struct regcache *regcache, int regno)
{
- unsigned LONGEST val;
+ struct gdbarch *gdbarch = get_regcache_arch (regcache);
+ enum bfd_endian byte_order = gdbarch_byte_order (gdbarch);
+ ULONGEST val;
int err;
if (regno == -1)
{
- for (regno = 0; regno < NUM_REGS; regno++)
- mips_fetch_registers (regno);
+ for (regno = 0; regno < gdbarch_num_regs (gdbarch); regno++)
+ mips_fetch_registers (ops, regcache, regno);
return;
}
- if (regno == DEPRECATED_FP_REGNUM || regno == MIPS_ZERO_REGNUM)
- /* DEPRECATED_FP_REGNUM on the mips is a hack which is just
+ if (regno == gdbarch_deprecated_fp_regnum (gdbarch)
+ || regno == MIPS_ZERO_REGNUM)
+ /* gdbarch_deprecated_fp_regnum on the mips is a hack which is just
supposed to read zero (see also mips-nat.c). */
val = 0;
else
{
/* If PMON doesn't support this register, don't waste serial
bandwidth trying to read it. */
- int pmon_reg = mips_map_regno (regno);
+ int pmon_reg = mips_map_regno (gdbarch, regno);
if (regno != 0 && pmon_reg == 0)
val = 0;
else
/* Unfortunately the PMON version in the Vr4300 board has been
compiled without the 64bit register access commands. This
means we cannot get hold of the full register width. */
- if (mips_monitor == MON_DDB)
- val = (unsigned) mips_request ('t', pmon_reg, 0,
- &err, mips_receive_wait, NULL);
+ if (mips_monitor == MON_DDB || mips_monitor == MON_ROCKHOPPER)
+ val = mips_request ('t', pmon_reg, 0,
+ &err, mips_receive_wait, NULL);
else
val = mips_request ('r', pmon_reg, 0,
&err, mips_receive_wait, NULL);
}
}
- {
- char buf[MAX_REGISTER_SIZE];
-
- /* We got the number the register holds, but gdb expects to see a
- value in the target byte ordering. */
- store_unsigned_integer (buf, register_size (current_gdbarch, regno), val);
- regcache_raw_supply (current_regcache, regno, buf);
- }
+ mips_set_register (regno, val);
}
/* Prepare to store registers. The MIPS protocol can store individual
registers, so this function doesn't have to do anything. */
static void
-mips_prepare_to_store (void)
+mips_prepare_to_store (struct regcache *regcache)
{
}
/* Store remote register(s). */
static void
-mips_store_registers (int regno)
+mips_store_registers (struct target_ops *ops,
+ struct regcache *regcache, int regno)
{
+ struct gdbarch *gdbarch = get_regcache_arch (regcache);
+ ULONGEST val;
int err;
if (regno == -1)
{
- for (regno = 0; regno < NUM_REGS; regno++)
- mips_store_registers (regno);
+ for (regno = 0; regno < gdbarch_num_regs (gdbarch); regno++)
+ mips_store_registers (ops, regcache, regno);
return;
}
- mips_request ('R', mips_map_regno (regno),
- read_register (regno),
+ regcache_cooked_read_unsigned (regcache, regno, &val);
+ mips_request (mips_monitor == MON_ROCKHOPPER ? 'T' : 'R',
+ mips_map_regno (gdbarch, regno),
+ val,
&err, mips_receive_wait, NULL);
if (err)
mips_error ("Can't write register %d: %s", regno, safe_strerror (errno));
}
-/* Fetch a word from the target board. */
+/* Fetch a word from the target board. Return word fetched in location
+ addressed by VALP. Return 0 when successful; return positive error
+ code when not. */
-static unsigned int
-mips_fetch_word (CORE_ADDR addr)
+static int
+mips_fetch_word (CORE_ADDR addr, unsigned int *valp)
{
- unsigned int val;
int err;
- val = mips_request ('d', addr, 0, &err, mips_receive_wait, NULL);
+ *valp = mips_request ('d', addr, 0, &err, mips_receive_wait, NULL);
if (err)
{
/* Data space failed; try instruction space. */
- val = mips_request ('i', addr, 0, &err,
- mips_receive_wait, NULL);
- if (err)
- mips_error ("Can't read address 0x%s: %s",
- paddr_nz (addr), safe_strerror (errno));
+ *valp = mips_request ('i', addr, 0, &err,
+ mips_receive_wait, NULL);
}
- return val;
+ return err;
}
/* Store a word to the target board. Returns errno code or zero for
/* FIXME! make sure only 32-bit quantities get stored! */
static int
-mips_store_word (CORE_ADDR addr, unsigned int val, char *old_contents)
+mips_store_word (CORE_ADDR addr, unsigned int val, int *old_contents)
{
int err;
unsigned int oldcontents;
return errno;
}
if (old_contents != NULL)
- store_unsigned_integer (old_contents, 4, oldcontents);
+ *old_contents = oldcontents;
return 0;
}
static int mask_address_p = 1;
static int
-mips_xfer_memory (CORE_ADDR memaddr, char *myaddr, int len, int write,
+mips_xfer_memory (CORE_ADDR memaddr, gdb_byte *myaddr, int len, int write,
struct mem_attrib *attrib, struct target_ops *target)
{
+ enum bfd_endian byte_order = gdbarch_byte_order (target_gdbarch);
int i;
CORE_ADDR addr;
int count;
/* Fill start and end extra bytes of buffer with existing data. */
if (addr != memaddr || len < 4)
{
+ unsigned int val;
+
+ if (mips_fetch_word (addr, &val))
+ return 0;
+
/* Need part of initial word -- fetch it. */
- store_unsigned_integer (&buffer[0], 4, mips_fetch_word (addr));
+ store_unsigned_integer (&buffer[0], 4, byte_order, val);
}
if (count > 1)
{
+ unsigned int val;
+
/* Need part of last word -- fetch it. FIXME: we do this even
if we don't need it. */
- store_unsigned_integer (&buffer[(count - 1) * 4], 4,
- mips_fetch_word (addr + (count - 1) * 4));
+ if (mips_fetch_word (addr + (count - 1) * 4, &val))
+ return 0;
+
+ store_unsigned_integer (&buffer[(count - 1) * 4], 4, byte_order, val);
}
/* Copy data to be written over corresponding part of buffer */
for (i = 0; i < count; i++, addr += 4)
{
- status = mips_store_word (addr,
- extract_unsigned_integer (&buffer[i * 4], 4),
- NULL);
+ int word;
+ word = extract_unsigned_integer (&buffer[i * 4], 4, byte_order);
+ status = mips_store_word (addr, word, NULL);
/* Report each kilobyte (we download 32-bit words at a time) */
if (i % 256 == 255)
{
/* Read all the longwords */
for (i = 0; i < count; i++, addr += 4)
{
- store_unsigned_integer (&buffer[i * 4], 4, mips_fetch_word (addr));
+ unsigned int val;
+
+ if (mips_fetch_word (addr, &val))
+ return 0;
+
+ store_unsigned_integer (&buffer[i * 4], 4, byte_order, val);
QUIT;
}
right port, we could interrupt the process with a break signal. */
static void
-mips_kill (void)
+mips_kill (struct target_ops *ops)
{
if (!mips_wait_flag)
- return;
+ {
+ target_mourn_inferior ();
+ return;
+ }
interrupt_count++;
target_terminal_ours ();
- if (query ("Interrupted while waiting for the program.\n\
-Give up (and stop debugging it)? "))
+ if (query (_("Interrupted while waiting for the program.\n\
+Give up (and stop debugging it)? ")))
{
/* Clean up in such a way that mips_close won't try to talk to the
board (it almost surely won't work since we weren't able to talk to
serial_send_break (mips_desc);
+ target_mourn_inferior ();
+
#if 0
if (mips_is_open)
{
/* Start running on the target board. */
static void
-mips_create_inferior (char *execfile, char *args, char **env, int from_tty)
+mips_create_inferior (struct target_ops *ops, char *execfile,
+ char *args, char **env, int from_tty)
{
CORE_ADDR entry_pt;
init_wait_for_inferior ();
- /* FIXME: Should we set inferior_ptid here? */
-
- proceed (entry_pt, TARGET_SIGNAL_DEFAULT, 0);
+ regcache_write_pc (get_current_regcache (), entry_pt);
}
-/* Clean up after a process. Actually nothing to do. */
+/* Clean up after a process. The bulk of the work is done in mips_close(),
+ which is called when unpushing the target. */
static void
-mips_mourn_inferior (void)
+mips_mourn_inferior (struct target_ops *ops)
{
if (current_ops != NULL)
unpush_target (current_ops);
- generic_mourn_inferior ();
}
\f
/* We can write a breakpoint and read the shadow contents in one
/* Insert a breakpoint. On targets that don't have built-in
breakpoint support, we read the contents of the target location and
stash it, then overwrite it with a breakpoint instruction. ADDR is
- the target location in the target machine. CONTENTS_CACHE is a
- pointer to memory allocated for saving the target contents. It is
- guaranteed by the caller to be long enough to save the breakpoint
- length returned by BREAKPOINT_FROM_PC. */
+ the target location in the target machine. BPT is the breakpoint
+ being inserted or removed, which contains memory for saving the
+ target contents. */
static int
-mips_insert_breakpoint (CORE_ADDR addr, char *contents_cache)
+mips_insert_breakpoint (struct gdbarch *gdbarch,
+ struct bp_target_info *bp_tgt)
{
if (monitor_supports_breakpoints)
- return set_breakpoint (addr, MIPS_INSN32_SIZE, BREAK_FETCH);
+ return mips_set_breakpoint (bp_tgt->placed_address, MIPS_INSN32_SIZE,
+ BREAK_FETCH);
else
- return memory_insert_breakpoint (addr, contents_cache);
+ return memory_insert_breakpoint (gdbarch, bp_tgt);
}
+/* Remove a breakpoint. */
+
static int
-mips_remove_breakpoint (CORE_ADDR addr, char *contents_cache)
+mips_remove_breakpoint (struct gdbarch *gdbarch,
+ struct bp_target_info *bp_tgt)
{
if (monitor_supports_breakpoints)
- return clear_breakpoint (addr, MIPS_INSN32_SIZE, BREAK_FETCH);
+ return mips_clear_breakpoint (bp_tgt->placed_address, MIPS_INSN32_SIZE,
+ BREAK_FETCH);
else
- return memory_remove_breakpoint (addr, contents_cache);
+ return memory_remove_breakpoint (gdbarch, bp_tgt);
}
/* Tell whether this target can support a hardware breakpoint. CNT
is the number of hardware breakpoints already installed. This
- implements the TARGET_CAN_USE_HARDWARE_WATCHPOINT macro. */
+ implements the target_can_use_hardware_watchpoint macro. */
int
mips_can_use_watchpoint (int type, int cnt, int othertype)
int
mips_insert_watchpoint (CORE_ADDR addr, int len, int type)
{
- if (set_breakpoint (addr, len, type))
+ if (mips_set_breakpoint (addr, len, type))
return -1;
return 0;
}
+/* Remove a watchpoint. */
+
int
mips_remove_watchpoint (CORE_ADDR addr, int len, int type)
{
- if (clear_breakpoint (addr, len, type))
+ if (mips_clear_breakpoint (addr, len, type))
return -1;
return 0;
}
+/* Test to see if a watchpoint has been hit. Return 1 if so; return 0,
+ if not. */
+
int
mips_stopped_by_watchpoint (void)
{
/* Insert a breakpoint. */
static int
-set_breakpoint (CORE_ADDR addr, int len, enum break_type type)
+mips_set_breakpoint (CORE_ADDR addr, int len, enum break_type type)
{
- return common_breakpoint (1, addr, len, type);
+ return mips_common_breakpoint (1, addr, len, type);
}
/* Clear a breakpoint. */
static int
-clear_breakpoint (CORE_ADDR addr, int len, enum break_type type)
+mips_clear_breakpoint (CORE_ADDR addr, int len, enum break_type type)
{
- return common_breakpoint (0, addr, len, type);
+ return mips_common_breakpoint (0, addr, len, type);
}
print the warning text and return 0. If it's an error, print
the error text and return 1. <ADDR> is the address of the breakpoint
that was being set. <RERRFLG> is the error code returned by PMON.
- This is a helper function for common_breakpoint. */
+ This is a helper function for mips_common_breakpoint. */
static int
-check_lsi_error (CORE_ADDR addr, int rerrflg)
+mips_check_lsi_error (CORE_ADDR addr, int rerrflg)
{
struct lsi_error *err;
- char *saddr = paddr_nz (addr); /* printable address string */
+ const char *saddr = paddress (target_gdbarch, addr);
if (rerrflg == 0) /* no error */
return 0;
if ((err->code & rerrflg) == err->code)
{
found = 1;
- fprintf_unfiltered (gdb_stderr,
- "common_breakpoint (0x%s): Warning: %s\n",
+ fprintf_unfiltered (gdb_stderr, "\
+mips_common_breakpoint (%s): Warning: %s\n",
saddr,
err->string);
}
}
if (!found)
- fprintf_unfiltered (gdb_stderr,
- "common_breakpoint (0x%s): Unknown warning: 0x%x\n",
+ fprintf_unfiltered (gdb_stderr, "\
+mips_common_breakpoint (%s): Unknown warning: 0x%x\n",
saddr,
rerrflg);
}
{
if ((err->code & rerrflg) == err->code)
{
- fprintf_unfiltered (gdb_stderr,
- "common_breakpoint (0x%s): Error: %s\n",
+ fprintf_unfiltered (gdb_stderr, "\
+mips_common_breakpoint (%s): Error: %s\n",
saddr,
err->string);
return 1;
}
}
- fprintf_unfiltered (gdb_stderr,
- "common_breakpoint (0x%s): Unknown error: 0x%x\n",
+ fprintf_unfiltered (gdb_stderr, "\
+mips_common_breakpoint (%s): Unknown error: 0x%x\n",
saddr,
rerrflg);
return 1;
Return 0 if successful; otherwise 1. */
static int
-common_breakpoint (int set, CORE_ADDR addr, int len, enum break_type type)
+mips_common_breakpoint (int set, CORE_ADDR addr, int len, enum break_type type)
{
+ int addr_size = gdbarch_addr_bit (target_gdbarch) / 8;
char buf[DATA_MAXLEN + 1];
char cmd, rcmd;
int rpid, rerrflg, rresponse, rlen;
int nfields;
- addr = ADDR_BITS_REMOVE (addr);
+ addr = gdbarch_addr_bits_remove (target_gdbarch, addr);
if (mips_monitor == MON_LSI)
{
/* Clear the table entry and tell PMON to clear the breakpoint. */
if (i == MAX_LSI_BREAKPOINTS)
{
- warning ("common_breakpoint: Attempt to clear bogus breakpoint at %s\n",
- paddr_nz (addr));
+ warning ("\
+mips_common_breakpoint: Attempt to clear bogus breakpoint at %s\n",
+ paddress (target_gdbarch, addr));
return 1;
}
nfields = sscanf (buf, "0x%x b 0x0 0x%x", &rpid, &rerrflg);
if (nfields != 2)
- mips_error ("common_breakpoint: Bad response from remote board: %s", buf);
+ mips_error ("\
+mips_common_breakpoint: Bad response from remote board: %s",
+ buf);
- return (check_lsi_error (addr, rerrflg));
+ return (mips_check_lsi_error (addr, rerrflg));
}
else
/* set a breakpoint */
if (type == BREAK_FETCH) /* instruction breakpoint */
{
cmd = 'B';
- sprintf (buf, "0x0 B 0x%s 0x0", paddr_nz (addr));
+ sprintf (buf, "0x0 B 0x%s 0x0", phex_nz (addr, addr_size));
}
else
/* watchpoint */
{
cmd = 'A';
- sprintf (buf, "0x0 A 0x%s 0x%x 0x%s", paddr_nz (addr),
- type == BREAK_READ ? 1 : (type == BREAK_WRITE ? 2 : 3),
- paddr_nz (addr + len - 1));
+ sprintf (buf, "0x0 A 0x%s 0x%x 0x%s",
+ phex_nz (addr, addr_size),
+ type == BREAK_READ ? 1 : (type == BREAK_WRITE ? 2 : 3),
+ phex_nz (addr + len - 1, addr_size));
}
mips_send_packet (buf, 1);
nfields = sscanf (buf, "0x%x %c 0x%x 0x%x",
&rpid, &rcmd, &rresponse, &rerrflg);
if (nfields != 4 || rcmd != cmd || rresponse > 255)
- mips_error ("common_breakpoint: Bad response from remote board: %s", buf);
+ mips_error ("\
+mips_common_breakpoint: Bad response from remote board: %s",
+ buf);
if (rerrflg != 0)
- if (check_lsi_error (addr, rerrflg))
+ if (mips_check_lsi_error (addr, rerrflg))
return 1;
/* rresponse contains PMON's breakpoint number. Record the
}
cmd = 'B';
- sprintf (buf, "0x0 B 0x%s 0x%s %s", paddr_nz (addr),
- paddr_nz (mask), flags);
+ sprintf (buf, "0x0 B 0x%s 0x%s %s", phex_nz (addr, addr_size),
+ phex_nz (mask, addr_size), flags);
}
else
{
cmd = 'b';
- sprintf (buf, "0x0 b 0x%s", paddr_nz (addr));
+ sprintf (buf, "0x0 b 0x%s", phex_nz (addr, addr_size));
}
mips_send_packet (buf, 1);
&rpid, &rcmd, &rerrflg, &rresponse);
if (nfields != 4 || rcmd != cmd)
- mips_error ("common_breakpoint: Bad response from remote board: %s",
+ mips_error ("\
+mips_common_breakpoint: Bad response from remote board: %s",
buf);
if (rerrflg != 0)
if (mips_monitor == MON_DDB)
rresponse = rerrflg;
if (rresponse != 22) /* invalid argument */
- fprintf_unfiltered (gdb_stderr,
- "common_breakpoint (0x%s): Got error: 0x%x\n",
- paddr_nz (addr), rresponse);
+ fprintf_unfiltered (gdb_stderr, "\
+mips_common_breakpoint (%s): Got error: 0x%x\n",
+ paddress (target_gdbarch, addr), rresponse);
return 1;
}
}
return 0;
}
\f
+/* Send one S record as specified by SREC of length LEN, starting
+ at ADDR. Note, however, that ADDR is not used except to provide
+ a useful message to the user in the event that a NACK is received
+ from the board. */
+
static void
send_srec (char *srec, int len, CORE_ADDR addr)
{
case 0x6: /* ACK */
return;
case 0x15: /* NACK */
- fprintf_unfiltered (gdb_stderr, "Download got a NACK at byte %s! Retrying.\n", paddr_u (addr));
+ fprintf_unfiltered (gdb_stderr, "Download got a NACK at byte %s! Retrying.\n",
+ paddress (target_gdbarch, addr));
continue;
default:
error ("Download got unexpected ack char: 0x%x, retrying.\n", ch);
at a time (range 0..63). Keep a checksum if required (passed
pointer non-NULL). The function returns the number of encoded
characters written into the buffer. */
+
static int
pmon_makeb64 (unsigned long v, char *p, int n, int *chksum)
{
/* Shorthand function (that could be in-lined) to output the zero-fill
escape sequence into the data stream. */
+
static int
pmon_zeroset (int recsize, char **buff, int *amount, unsigned int *chksum)
{
return (recsize + count + 2);
}
+/* Add the checksum specified by *VALUE to end of the record under
+ construction. *BUF specifies the location at which to begin
+ writing characters comprising the checksum information. RECSIZE
+ specifies the size of the record constructed thus far. (A trailing
+ NUL character may be present in the buffer holding the record, but
+ the record size does not include this character.)
+
+ Return the total size of the record after adding the checksum escape,
+ the checksum itself, and the trailing newline.
+
+ The checksum specified by *VALUE is zeroed out prior to returning.
+ Additionally, *BUF is updated to refer to the location just beyond
+ the record elements added by this call. */
+
static int
pmon_checkset (int recsize, char **buff, int *value)
{
/* NOTE: This constant depends on the monitor being used. This value
is for PMON 5.x on the Cogent Vr4300 board. */
+/* Create a FastLoad format record.
+
+ *OUTBUF is the buffer into which a FastLoad formatted record is
+ written. On return, the pointer position represented by *OUTBUF
+ is updated to point at the end of the data, i.e. the next position
+ in the buffer that may be written. No attempt is made to NUL-
+ terminate this portion of the record written to the buffer.
+
+ INBUF contains the binary input data from which the FastLoad
+ formatted record will be built. *INPTR is an index into this
+ buffer. *INPTR is updated as the input is consumed. Thus, on
+ return, the caller has access to the position of the next input
+ byte yet to be processed. INAMOUNT is the size, in bytes, of the
+ input data.
+
+ *RECSIZE will be written with the size of the record written to the
+ output buffer prior to returning. This size does not include a
+ NUL-termination byte as none is written to the output buffer.
+
+ *CSUM is the output buffer checksum. It is updated as data is
+ written to the output buffer.
+
+ *ZEROFILL is the current number of 3-byte zero sequences that have
+ been encountered. It is both an input and an output to this
+ function. */
+
static void
pmon_make_fastrec (char **outbuf, unsigned char *inbuf, int *inptr,
int inamount, int *recsize, unsigned int *csum,
return;
}
+/* Attempt to read an ACK. If an ACK is not read in a timely manner,
+ output the message specified by MESG. Return -1 for failure, 0
+ for success. */
+
static int
pmon_check_ack (char *mesg)
{
}
}
+/* Look for the string specified by STRING sent from the target board
+ during a download operation. If the string in question is not
+ seen, output an error message, remove the temporary file, if
+ appropriate, and return 0. Otherwise, return 1 to indicate
+ success. */
+
static int
mips_expect_download (char *string)
{
return 1;
}
+/* Look for messages from the target board associated with the entry
+ address.
+
+ NOTE: This function doesn't indicate success or failure, so we
+ have no way to determine whether or not the output from the board
+ was correctly seen. However, given that other items are checked
+ after this, it seems unlikely that those checks will pass if this
+ check doesn't first (silently) pass. */
+
static void
pmon_check_entry_address (char *entry_address, int final)
{
mips_expect ("\r\n");
}
+/* Look for messages from the target board showing the total number of
+ bytes downloaded to the board. Output 1 for success if the tail
+ end of the message was read correctly, 0 otherwise. */
+
static int
pmon_check_total (int bintotal)
{
return mips_expect_download (" bytes\r\n");
}
+/* Look for the termination messages associated with the end of
+ a download to the board.
+
+ Also, when `tftp_in_use' is set, issue the load command to the
+ board causing the file to be transferred. (This is done prior
+ to looking for the above mentioned termination messages.) */
+
static void
pmon_end_download (int final, int bintotal)
{
chmod (tftp_localname, stbuf.st_mode | S_IROTH);
/* Must reinitialize the board to prevent PMON from crashing. */
- mips_send_command ("initEther\r", -1);
+ if (mips_monitor != MON_ROCKHOPPER)
+ mips_send_command ("initEther\r", -1);
/* Send the load command. */
cmd = xmalloc (strlen (load_cmd_prefix) + strlen (tftp_name) + 2);
if (!pmon_check_total (bintotal))
return;
break;
+ case MON_ROCKHOPPER:
+ if (!pmon_check_total (bintotal))
+ return;
+ pmon_check_entry_address ("Entry Address = ", final);
+ break;
default:
pmon_check_entry_address ("Entry Address = ", final);
pmon_check_ack ("termination");
remove (tftp_localname); /* Remove temporary file */
}
+/* Write the buffer specified by BUFFER of length LENGTH to either
+ the board or the temporary file that'll eventually be transferred
+ to the board. */
+
static void
pmon_download (char *buffer, int length)
{
serial_write (udp_in_use ? udp_desc : mips_desc, buffer, length);
}
+/* Open object or executable file, FILE, and send it to the board
+ using the FastLoad format. */
+
static void
pmon_load_fast (char *file)
{
static void
mips_load (char *file, int from_tty)
{
+ struct regcache *regcache;
+
/* Get the board out of remote debugging mode. */
if (mips_exit_debug ())
error ("mips_load: Couldn't get into monitor mode.");
mips_initialize ();
/* Finally, make the PC point at the start address */
+ regcache = get_current_regcache ();
if (mips_monitor != MON_IDT)
{
/* Work around problem where PMON monitor updates the PC after a load
to a different value than GDB thinks it has. The following ensures
- that the write_pc() WILL update the PC value: */
- deprecated_register_valid[PC_REGNUM] = 0;
+ that the regcache_write_pc() WILL update the PC value: */
+ regcache_invalidate (regcache,
+ mips_regnum (get_regcache_arch (regcache))->pc);
}
if (exec_bfd)
- write_pc (bfd_get_start_address (exec_bfd));
-
- inferior_ptid = null_ptid; /* No process now */
+ regcache_write_pc (regcache, bfd_get_start_address (exec_bfd));
+}
-/* This is necessary because many things were based on the PC at the time that
- we attached to the monitor, which is no longer valid now that we have loaded
- new code (and just changed the PC). Another way to do this might be to call
- normal_stop, except that the stack may not be valid, and things would get
- horribly confused... */
+/* Check to see if a thread is still alive. */
+
+static int
+mips_thread_alive (struct target_ops *ops, ptid_t ptid)
+{
+ if (ptid_equal (ptid, remote_mips_ptid))
+ /* The monitor's task is always alive. */
+ return 1;
- clear_symtab_users ();
+ return 0;
}
+/* Convert a thread ID to a string. Returns the string in a static
+ buffer. */
+
+static char *
+mips_pid_to_str (struct target_ops *ops, ptid_t ptid)
+{
+ static char buf[64];
+
+ if (ptid_equal (ptid, remote_mips_ptid))
+ {
+ xsnprintf (buf, sizeof buf, "Thread <main>");
+ return buf;
+ }
+
+ return normal_pid_to_str (ptid);
+}
/* Pass the command argument as a packet to PMON verbatim. */
\f
extern initialize_file_ftype _initialize_remote_mips; /* -Wmissing-prototypes */
+/* Initialize mips_ops, lsi_ops, ddb_ops, pmon_ops, and rockhopper_ops.
+ Create target specific commands and perform other initializations
+ specific to this file. */
+
void
_initialize_remote_mips (void)
{
mips_ops.to_load = mips_load;
mips_ops.to_create_inferior = mips_create_inferior;
mips_ops.to_mourn_inferior = mips_mourn_inferior;
+ mips_ops.to_thread_alive = mips_thread_alive;
+ mips_ops.to_pid_to_str = mips_pid_to_str;
+ mips_ops.to_log_command = serial_log_command;
mips_ops.to_stratum = process_stratum;
- mips_ops.to_has_all_memory = 1;
- mips_ops.to_has_memory = 1;
- mips_ops.to_has_stack = 1;
- mips_ops.to_has_registers = 1;
- mips_ops.to_has_execution = 1;
+ mips_ops.to_has_all_memory = default_child_has_all_memory;
+ mips_ops.to_has_memory = default_child_has_memory;
+ mips_ops.to_has_stack = default_child_has_stack;
+ mips_ops.to_has_registers = default_child_has_registers;
+ mips_ops.to_has_execution = default_child_has_execution;
mips_ops.to_magic = OPS_MAGIC;
/* Copy the common fields to all four target vectors. */
- pmon_ops = ddb_ops = lsi_ops = mips_ops;
+ rockhopper_ops = pmon_ops = ddb_ops = lsi_ops = mips_ops;
/* Initialize target-specific fields in the target vectors. */
mips_ops.to_shortname = "mips";
ddb_ops.to_open = ddb_open;
ddb_ops.to_wait = mips_wait;
+ rockhopper_ops.to_shortname = "rockhopper";
+ rockhopper_ops.to_doc = ddb_ops.to_doc;
+ rockhopper_ops.to_open = rockhopper_open;
+ rockhopper_ops.to_wait = mips_wait;
+
lsi_ops.to_shortname = "lsi";
lsi_ops.to_doc = pmon_ops.to_doc;
lsi_ops.to_open = lsi_open;
add_target (&pmon_ops);
add_target (&ddb_ops);
add_target (&lsi_ops);
+ add_target (&rockhopper_ops);
add_setshow_zinteger_cmd ("timeout", no_class, &mips_receive_wait, _("\
Set timeout in seconds for remote MIPS serial I/O."), _("\
NULL, /* FIXME: i18n: */
&setlist, &showlist);
- deprecated_add_show_from_set
- (add_set_cmd ("monitor-prompt", class_obscure, var_string,
- (char *) &mips_monitor_prompt,
- "Set the prompt that GDB expects from the monitor.",
- &setlist),
- &showlist);
+ add_setshow_string_cmd ("monitor-prompt", class_obscure,
+ &mips_monitor_prompt, _("\
+Set the prompt that GDB expects from the monitor."), _("\
+Show the prompt that GDB expects from the monitor."), NULL,
+ NULL,
+ NULL, /* FIXME: i18n: */
+ &setlist, &showlist);
add_setshow_zinteger_cmd ("monitor-warnings", class_obscure,
&monitor_warnings, _("\
NULL, /* FIXME: i18n: */
&setlist, &showlist);
- add_com ("pmon <command>", class_obscure, pmon_command,
+ add_com ("pmon", class_obscure, pmon_command,
_("Send a packet to PMON (must be in debug mode)."));
add_setshow_boolean_cmd ("mask-address", no_class, &mask_address_p, _("\
NULL,
NULL, /* FIXME: i18n: */
&setlist, &showlist);
+ remote_mips_ptid = ptid_build (42000, 0, 42000);
}
projects / deliverable / binutils-gdb.git / blobdiff