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binutils-gdb/gdb/v850ice.c
Stu Grossman 6c310da826 * Makefile.in configure configure.in: Remove ENABLE_CLIBS, 
ENABLE_OBS, and THREAD_DB_OBS.  These are consolidated into LIBS
	and CONFIG_OBS.
	* configure configure.in:  Clean up test cases around thread support.
start-sanitize-v850
	* configure.tgt (v850-*-*):  Include v850ice.o and v850.lib if
	host is Windows.
end-sanitize-v850
	* c-valprint.c ch-valprint.c cp-valprint.c eval.c expprint.c
	printcmd.c valops.c value.h values.c:  Add bfd_section arg to
	value_at and value_at_lazy.
	* coffread.c dbxread.c elfread.c mdebugread.c minsyms.c symtab.h:
	Add bfd_section arg to prim_record_minimal_symbol_and_info.
	* corefile.c gdbcore.h printcmd.c valops.c:  Use read_memory_section
	instead of read_memory.  It takes a bfd_section arg.
	* coffread.c dbxread.c elfread.c gdb-stabs.h objfiles.h:  Remove
	unnecessary cast for assignment of struct dbx_symfile_info.
	Struct objfile now uses a real pointer instead of PTR for this
	element.
	* dbxread.c (dbx_symfile_init): Stash bfd section pointers for
	text, data and bss into dbx_symfile_info.
	* exec.c (xfer_memory):  Handle transfers for user-specified
	sections.
	* findvar.c (read_var_value locate_var_value):  Copy bfd section
	from the symbol to the value.
	* gdb-stabs.h:  Add section pointers for text, data and bss
	sections.
	* maint.c (translate address command):  Add test code for overlay
	address translation.
	* printcmd.c (do_examine do_one_display):  Now takes a bfd section
	arg.
	* (print_formatted x_command):  Record current section along with
	current address for repeated commands.
	* sparc-nat.c (fetch_inferior_registers):  Change
	target_xfer_memory to target_{read write}_memory to allow changes
	to target_xfer_memory interface for section info.
	* symmisc.c (dump_msymbols print_symbol):  Print section
	assocaited with symbol.
	* symtab.c (fixup_symbol_section):  New routine to
	add section info to symbols returned by lookup_symbol.
	* symtab.h (struct general_symbol_info):  Add bfd section to
	symbols.
	* target.c target.h (target_xfer_memory):  Add bfd section to
	args.
	* (target_read_memory_section):  New routine to read data from a
	specific section.
	* (target_memory_bfd_section):  New global variable to pass bfd
	section in to targets.
	* valarith.c (value_add value_addr value_array):  Preserve bfd
	section when computing new value.
	* value.h (struct value):  Add bfd section to values.
	* values.c (allocate_value value_copy):  Initialize/preserve bfd
	section.
	* (unpack_double):  Clean up _MSC_VER conditionals to remove
	duplicate code.
start-sanitize-v850
	* v850ice.c:  New module to support communication with NEC's
	PC-based ICE.
	* config/v850/tm-v850.h (REGISTER_NAMES):  Replace sp, gp, fp, and
	ep names with rxx names.  sp and fp are renamed via a different
	mechanism.
end-sanitize-v850
1997-01-04 00:25:53 +00:00

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/* ICE interface for the NEC V850 for GDB, the GNU debugger.
Copyright 1996, 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
(at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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. */
#include "defs.h"
#include "gdb_string.h"
#if 0
#include "frame.h"
#endif
#include "inferior.h"
#if 0
#include "bfd.h"
#endif
#include "symfile.h"
#include "target.h"
#if 0
#include "wait.h"
#include "gdbcmd.h"
#include "objfiles.h"
#include "gdb-stabs.h"
#include "gdbthread.h"
#endif
/* Prototypes for local functions */
static void v850ice_files_info PARAMS ((struct target_ops *ignore));
static int v850ice_xfer_memory PARAMS ((CORE_ADDR memaddr, char *myaddr,
int len, int should_write,
struct target_ops *target));
static void v850ice_prepare_to_store PARAMS ((void));
static void v850ice_fetch_registers PARAMS ((int regno));
static void v850ice_resume PARAMS ((int pid, int step,
enum target_signal siggnal));
static void v850ice_open PARAMS ((char *name, int from_tty));
static void v850ice_close PARAMS ((int quitting));
static void v850ice_store_registers PARAMS ((int regno));
static void v850ice_mourn PARAMS ((void));
static int v850ice_wait PARAMS ((int pid, struct target_waitstatus *status));
static void v850ice_kill PARAMS ((void));
static void v850ice_detach PARAMS ((char *args, int from_tty));
static int v850ice_insert_breakpoint PARAMS ((CORE_ADDR, char *));
static int v850ice_remove_breakpoint PARAMS ((CORE_ADDR, char *));
static int ice_open = 0;
#ifndef EXPORT
#define EXPORT __declspec(dllexport)
#endif
EXPORT long __stdcall ExeAppReq (char *, long, char *, char *);
#define MREADREG 0x0001
#define MWRITEREG 0x0002
#define MREADMEM 0x0003
#define MWRITEMEM 0x0004
#define MSINGLESTEP 0x0005
#define MRESUME 0x0006
#define MLOADPROGRAM 0x0007
#define MSETBREAK 0x0008
#define MREMOVEBREAK 0x0009
#define MQUIT 0x000A
#define MTERMINATE 0x000B
#define MATTACH 0x000C
#define MCHECKSTATUS 0x000D
#define MHALT 0x000E
#define MDIRECTCMD 0x000F
#define MSYMADR 0x0010
#define MGETTASKLIST 0x0011
#define MREADVECREG 0x0012
#define MWRITEVECREG 0x0013
#define MGETCHANGEDREGS 0x0014
#define MGETSERVERINFO 0x0015
#define MREADBLOCK 0x0016
#define MSETHARDBRK 0x0017
#define MREMOVEHARDBRK 0x0018
#define MCOPYBLOCK 0x0019
#define MBLOCKFILL 0x001A
#define MFINDBLOCK 0x001B
#define MCOMPAREBLOCK 0x001C
#define MREFRESH 0x001D
#define MSPECIAL 0x001E
#define MGETCMDLIST 0x001F
#define MEXPVAL 0x0020
#define MEXPFAILED 0x0021
#define MSAVESTATE 0x0022
#define MWRITEBLOCK 0x0023
#define MDETACH 0x0024
#define MGETMODULES 0x0025
#define MREMOTESYMBOL 0x0026
#define MREADCSTRING 0x0027
#define MLOADMODULE 0x0028
#define MDIDSYSCALL 0x0029
#define MDBPWRITEBUFFERS 0x002A
#define MBPID 0x002B
#define MINITEXEC 0x002C
#define MEXITEXEC 0x002D
#define MRCCMD 0x002E
#define MDOWNLOAD 0x0050
extern struct target_ops v850ice_ops; /* Forward decl */
/* "pir", "tkcw", "chcw", "adtre" */
/* Code for opening a connection to the ICE. */
static void
v850ice_open (name, from_tty)
char *name;
int from_tty;
{
long retval;
char retmsg[1000];
if (name)
error ("Too many arguments.");
target_preopen (from_tty);
unpush_target (&v850ice_ops);
if (from_tty)
puts_filtered ("V850ice debugging\n");
push_target (&v850ice_ops); /* Switch to using v850ice target now */
target_terminal_init ();
/* Without this, some commands which require an active target (such as kill)
won't work. This variable serves (at least) double duty as both the pid
of the target process (if it has such), and as a flag indicating that a
target is active. These functions should be split out into seperate
variables, especially since GDB will someday have a notion of debugging
several processes. */
inferior_pid = 42000;
/* Start the v850ice connection; if error (0), discard this target.
In particular, if the user quits, be sure to discard it
(we'd be in an inconsistent state otherwise). */
retval = ExeAppReq ("GDB", MINITEXEC, "0", retmsg);
ice_open = 1;
start_remote ();
/* pop_target();*/
}
/* Clean up connection to a remote debugger. */
/* ARGSUSED */
static void
v850ice_close (quitting)
int quitting;
{
long retval;
if (ice_open)
{
retval = ExeAppReq ("GDB", MEXITEXEC, NULL, NULL);
if (retval)
error ("ExeAppReq (MEXITEXEC) returned %d", retval);
ice_open = 0;
}
}
static void
v850ice_detach (args, from_tty)
char *args;
int from_tty;
{
if (args)
error ("Argument given to \"detach\" when remotely debugging.");
pop_target ();
if (from_tty)
puts_filtered ("Ending v850ice debugging.\n");
}
/* Tell the remote machine to resume. */
static void
v850ice_resume (pid, step, siggnal)
int pid, step;
enum target_signal siggnal;
{
long retval;
char cmd[100];
char val[100];
if (step)
retval = ExeAppReq ("GDB", MSINGLESTEP, "step", val);
else
retval = ExeAppReq ("GDB", MRESUME, "run", val);
if (retval)
error ("ExeAppReq (step = %d) returned %d: cmd = %s", step, retval, cmd);
}
/* Wait until the remote machine stops, then return,
storing status in STATUS just as `wait' would.
Returns "pid" (though it's not clear what, if anything, that
means in the case of this target). */
static int
v850ice_wait (pid, status)
int pid;
struct target_waitstatus *status;
{
status->kind = TARGET_WAITKIND_STOPPED;
status->value.sig = TARGET_SIGNAL_TRAP;
return inferior_pid;
}
static int
convert_register (regno, buf)
int regno;
char *buf;
{
if (regno <= 31)
sprintf (buf, "r%d", regno);
else if (reg_names[regno][0] == 's'
&& reg_names[regno][1] == 'r')
return 0;
else
sprintf (buf, "%s", reg_names[regno]);
return 1;
}
/* Read the remote registers into the block REGS. */
/* Note that the ICE returns register contents as ascii hex strings. We have
to convert that to an unsigned long, and then call store_unsigned_integer to
convert it to target byte-order if necessary. */
static void
v850ice_fetch_registers (regno)
int regno;
{
long retval;
char cmd[100];
char val[100];
unsigned long regval;
char *p;
if (regno == -1)
{
for (regno = 0; regno < NUM_REGS; regno++)
v850ice_fetch_registers (regno);
return;
}
strcpy (cmd, "reg ");
if (!convert_register (regno, &cmd[4]))
return;
retval = ExeAppReq ("GDB", MREADREG, cmd, val);
if (retval)
error ("ExeAppReq returned %d: cmd = %s", retval, cmd);
regval = strtoul (val, &p, 16);
if (regval == 0 && p == val)
error ("v850ice_fetch_registers (%d): bad value from ICE: %s.",
regno, val);
store_unsigned_integer (val, REGISTER_RAW_SIZE (regno), regval);
supply_register (regno, val);
}
/* Store register REGNO, or all registers if REGNO == -1, from the contents
of REGISTERS. */
static void
v850ice_store_registers (regno)
int regno;
{
long retval;
char cmd[100];
char val[100];
unsigned long regval;
if (regno == -1)
{
for (regno = 0; regno < NUM_REGS; regno++)
v850ice_store_registers (regno);
return;
}
regval = extract_unsigned_integer (&registers[REGISTER_BYTE (regno)],
REGISTER_RAW_SIZE (regno));
strcpy (cmd, "reg ");
if (!convert_register (regno, &cmd[4]))
return;
sprintf (cmd + strlen (cmd), "=0x%x", regval);
retval = ExeAppReq ("GDB", MWRITEREG, cmd, val);
if (retval)
error ("ExeAppReq returned %d: cmd = %s", retval, cmd);
}
/* Prepare to store registers. Nothing to do here, since the ICE can write one
register at a time. */
static void
v850ice_prepare_to_store ()
{
}
/* Read or write LEN bytes from inferior memory at MEMADDR, transferring
to or from debugger address MYADDR. Write to inferior if SHOULD_WRITE is
nonzero. Returns length of data written or read; 0 for error. */
/* ARGSUSED */
static int
v850ice_xfer_memory (memaddr, myaddr, len, should_write, target)
CORE_ADDR memaddr;
char *myaddr;
int len;
int should_write;
struct target_ops *target; /* ignored */
{
long retval;
char cmd[100];
if (should_write)
{
#if 1
sprintf (cmd, "memory b c 0x%x=0x00 l=%d", (int)memaddr, len);
retval = ExeAppReq ("GDB", MWRITEBLOCK, cmd, myaddr);
#else
sprintf (cmd, "memory b c 0x%x=0x%x", (int)memaddr, *myaddr & 0xff);
retval = ExeAppReq ("GDB", MWRITEBLOCK, cmd, myaddr);
return 1;
#endif
}
else
{
unsigned char *tmp;
int i;
tmp = alloca (len + 100);
memset (tmp + len, 0xff, 100);
sprintf (cmd, "memory b 0x%x l=%d", (int)memaddr, len);
retval = ExeAppReq ("GDB", MREADBLOCK, cmd, tmp);
for (i = 0; i < 100; i++)
{
if (tmp[len + i] != 0xff)
{
warning ("MREADBLOCK trashed bytes after transfer area.");
break;
}
}
memcpy (myaddr, tmp, len);
}
if (retval)
error ("ExeAppReq returned %d: cmd = %s", retval, cmd);
return len;
}
static void
v850ice_files_info (ignore)
struct target_ops *ignore;
{
puts_filtered ("Debugging a target via the NEC V850 ICE.\n");
}
static int
v850ice_insert_breakpoint (addr, contents_cache)
CORE_ADDR addr;
char *contents_cache;
{
long retval;
char cmd[100];
char val[100];
sprintf (cmd, "%d, ", addr);
#if 1
retval = ExeAppReq ("GDB", MSETBREAK, cmd, val);
#else
retval = ExeAppReq ("GDB", MSETHARDBRK, cmd, val);
#endif
if (retval)
error ("ExeAppReq (MSETBREAK) returned %d: cmd = %s", retval, cmd);
return 0;
}
static int
v850ice_remove_breakpoint (addr, contents_cache)
CORE_ADDR addr;
char *contents_cache;
{
long retval;
char cmd[100];
char val[100];
sprintf (cmd, "%d, ", addr);
#if 1
retval = ExeAppReq ("GDB", MREMOVEBREAK, cmd, val);
#else
retval = ExeAppReq ("GDB", MREMOVEHARDBRK, cmd, val);
#endif
if (retval)
error ("ExeAppReq (MREMOVEBREAK) returned %d: cmd = %s", retval, cmd);
return 0;
}
static void
v850ice_kill ()
{
target_mourn_inferior ();
}
static void
v850ice_mourn ()
{
}
/* Define the target subroutine names */
struct target_ops v850ice_ops = {
"ice", /* to_shortname */
"NEC V850 ICE interface", /* to_longname */
"Debug a system controlled by a NEC 850 ICE.", /* to_doc */
v850ice_open, /* to_open */
v850ice_close, /* to_close */
NULL, /* to_attach */
v850ice_detach, /* to_detach */
v850ice_resume, /* to_resume */
v850ice_wait, /* to_wait */
v850ice_fetch_registers, /* to_fetch_registers */
v850ice_store_registers, /* to_store_registers */
v850ice_prepare_to_store, /* to_prepare_to_store */
v850ice_xfer_memory, /* to_xfer_memory */
v850ice_files_info, /* to_files_info */
v850ice_insert_breakpoint, /* to_insert_breakpoint */
v850ice_remove_breakpoint, /* to_remove_breakpoint */
NULL, /* to_terminal_init */
NULL, /* to_terminal_inferior */
NULL, /* to_terminal_ours_for_output */
NULL, /* to_terminal_ours */
NULL, /* to_terminal_info */
v850ice_kill, /* to_kill */
generic_load, /* to_load */
NULL, /* to_lookup_symbol */
NULL, /* to_create_inferior */
v850ice_mourn, /* to_mourn_inferior */
0, /* to_can_run */
0, /* to_notice_signals */
NULL, /* to_thread_alive */
0, /* to_stop */
process_stratum, /* to_stratum */
NULL, /* to_next */
1, /* to_has_all_memory */
1, /* to_has_memory */
1, /* to_has_stack */
1, /* to_has_registers */
1, /* to_has_execution */
NULL, /* sections */
NULL, /* sections_end */
OPS_MAGIC /* to_magic */
};
void
_initialize_v850ice ()
{
add_target (&v850ice_ops);
}
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