| /* Generic remote debugging interface for simulators. |
| Copyright 1993, 1994, 1996, 1997 Free Software Foundation, Inc. |
| Contributed by Cygnus Support. |
| Steve Chamberlain (sac@cygnus.com). |
| |
| 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 "inferior.h" |
| #include "wait.h" |
| #include "value.h" |
| #include "gdb_string.h" |
| #include <ctype.h> |
| #include <fcntl.h> |
| #include <signal.h> |
| #include <setjmp.h> |
| #include <errno.h> |
| #include "terminal.h" |
| #include "target.h" |
| #include "gdbcore.h" |
| #include "callback.h" |
| #include "remote-sim.h" |
| #include "remote-utils.h" |
| #include "command.h" |
| |
| /* Prototypes */ |
| |
| extern void _initialize_remote_sim PARAMS ((void)); |
| |
| extern int (*ui_loop_hook) PARAMS ((int signo)); |
| |
| static void dump_mem PARAMS ((char *buf, int len)); |
| |
| static void init_callbacks PARAMS ((void)); |
| |
| static void end_callbacks PARAMS ((void)); |
| |
| static int gdb_os_write_stdout PARAMS ((host_callback *, const char *, int)); |
| |
| static void gdb_os_flush_stdout PARAMS ((host_callback *)); |
| |
| static int gdb_os_write_stderr PARAMS ((host_callback *, const char *, int)); |
| |
| static void gdb_os_flush_stderr PARAMS ((host_callback *)); |
| |
| static int gdb_os_poll_quit PARAMS ((host_callback *)); |
| |
| /* printf_filtered is depreciated */ |
| static void gdb_os_printf_filtered PARAMS ((host_callback *, const char *,...)); |
| |
| static void gdb_os_vprintf_filtered PARAMS ((host_callback *, const char *, va_list)); |
| |
| static void gdb_os_evprintf_filtered PARAMS ((host_callback *, const char *, va_list)); |
| |
| static void gdb_os_error PARAMS ((host_callback *, const char *,...)); |
| |
| static void gdbsim_fetch_register PARAMS ((int regno)); |
| |
| static void gdbsim_store_register PARAMS ((int regno)); |
| |
| static void gdbsim_kill PARAMS ((void)); |
| |
| static void gdbsim_load PARAMS ((char *prog, int fromtty)); |
| |
| static void gdbsim_create_inferior PARAMS ((char *exec_file, char *args, char **env)); |
| |
| static void gdbsim_open PARAMS ((char *args, int from_tty)); |
| |
| static void gdbsim_close PARAMS ((int quitting)); |
| |
| static void gdbsim_detach PARAMS ((char *args, int from_tty)); |
| |
| static void gdbsim_resume PARAMS ((int pid, int step, enum target_signal siggnal)); |
| |
| static int gdbsim_wait PARAMS ((int pid, struct target_waitstatus * status)); |
| |
| static void gdbsim_prepare_to_store PARAMS ((void)); |
| |
| static int gdbsim_xfer_inferior_memory PARAMS ((CORE_ADDR memaddr, |
| char *myaddr, int len, |
| int write, |
| struct target_ops * target)); |
| |
| static void gdbsim_files_info PARAMS ((struct target_ops * target)); |
| |
| static void gdbsim_mourn_inferior PARAMS ((void)); |
| |
| static void gdbsim_stop PARAMS ((void)); |
| |
| void simulator_command PARAMS ((char *args, int from_tty)); |
| |
| /* Naming convention: |
| |
| sim_* are the interface to the simulator (see remote-sim.h). |
| gdbsim_* are stuff which is internal to gdb. */ |
| |
| /* Forward data declarations */ |
| extern struct target_ops gdbsim_ops; |
| |
| static int program_loaded = 0; |
| |
| /* We must keep track of whether the simulator has been opened or not because |
| GDB can call a target's close routine twice, but sim_close doesn't allow |
| this. We also need to record the result of sim_open so we can pass it |
| back to the other sim_foo routines. */ |
| static SIM_DESC gdbsim_desc = 0; |
| |
| static void |
| dump_mem (buf, len) |
| char *buf; |
| int len; |
| { |
| if (len <= 8) |
| { |
| if (len == 8 || len == 4) |
| { |
| long l[2]; |
| memcpy (l, buf, len); |
| printf_filtered ("\t0x%lx", l[0]); |
| printf_filtered (len == 8 ? " 0x%x\n" : "\n", l[1]); |
| } |
| else |
| { |
| int i; |
| printf_filtered ("\t"); |
| for (i = 0; i < len; i++) |
| printf_filtered ("0x%x ", buf[i]); |
| printf_filtered ("\n"); |
| } |
| } |
| } |
| |
| static host_callback gdb_callback; |
| static int callbacks_initialized = 0; |
| |
| /* Initialize gdb_callback. */ |
| |
| static void |
| init_callbacks () |
| { |
| if (!callbacks_initialized) |
| { |
| gdb_callback = default_callback; |
| gdb_callback.init (&gdb_callback); |
| gdb_callback.write_stdout = gdb_os_write_stdout; |
| gdb_callback.flush_stdout = gdb_os_flush_stdout; |
| gdb_callback.write_stderr = gdb_os_write_stderr; |
| gdb_callback.flush_stderr = gdb_os_flush_stderr; |
| gdb_callback.printf_filtered = gdb_os_printf_filtered; |
| gdb_callback.vprintf_filtered = gdb_os_vprintf_filtered; |
| gdb_callback.evprintf_filtered = gdb_os_evprintf_filtered; |
| gdb_callback.error = gdb_os_error; |
| gdb_callback.poll_quit = gdb_os_poll_quit; |
| gdb_callback.magic = HOST_CALLBACK_MAGIC; |
| callbacks_initialized = 1; |
| } |
| } |
| |
| /* Release callbacks (free resources used by them). */ |
| |
| static void |
| end_callbacks () |
| { |
| if (callbacks_initialized) |
| { |
| gdb_callback.shutdown (&gdb_callback); |
| callbacks_initialized = 0; |
| } |
| } |
| |
| /* GDB version of os_write_stdout callback. */ |
| |
| static int |
| gdb_os_write_stdout (p, buf, len) |
| host_callback *p; |
| const char *buf; |
| int len; |
| { |
| int i; |
| char b[2]; |
| |
| gdb_file_write (gdb_stdtarg, buf, len); |
| return len; |
| } |
| |
| /* GDB version of os_flush_stdout callback. */ |
| |
| static void |
| gdb_os_flush_stdout (p) |
| host_callback *p; |
| { |
| gdb_flush (gdb_stdtarg); |
| } |
| |
| /* GDB version of os_write_stderr callback. */ |
| |
| static int |
| gdb_os_write_stderr (p, buf, len) |
| host_callback *p; |
| const char *buf; |
| int len; |
| { |
| int i; |
| char b[2]; |
| |
| for (i = 0; i < len; i++) |
| { |
| b[0] = buf[i]; |
| b[1] = 0; |
| fputs_unfiltered (b, gdb_stdtarg); |
| } |
| return len; |
| } |
| |
| /* GDB version of os_flush_stderr callback. */ |
| |
| static void |
| gdb_os_flush_stderr (p) |
| host_callback *p; |
| { |
| gdb_flush (gdb_stderr); |
| } |
| |
| /* GDB version of printf_filtered callback. */ |
| |
| static void |
| gdb_os_printf_filtered (host_callback * p, const char *format,...) |
| { |
| va_list args; |
| va_start (args, format); |
| |
| vfprintf_filtered (gdb_stdout, format, args); |
| |
| va_end (args); |
| } |
| |
| /* GDB version of error vprintf_filtered. */ |
| |
| static void |
| gdb_os_vprintf_filtered (host_callback * p, const char *format, va_list ap) |
| { |
| vfprintf_filtered (gdb_stdout, format, ap); |
| } |
| |
| /* GDB version of error evprintf_filtered. */ |
| |
| static void |
| gdb_os_evprintf_filtered (host_callback * p, const char *format, va_list ap) |
| { |
| vfprintf_filtered (gdb_stderr, format, ap); |
| } |
| |
| /* GDB version of error callback. */ |
| |
| static void |
| gdb_os_error (host_callback * p, const char *format,...) |
| { |
| if (error_hook) |
| (*error_hook) (); |
| else |
| { |
| va_list args; |
| va_start (args, format); |
| verror (format, args); |
| va_end (args); |
| } |
| } |
| |
| #ifndef REGISTER_SIM_REGNO |
| #define REGISTER_SIM_REGNO(N) (N) |
| #endif |
| |
| static void |
| gdbsim_fetch_register (regno) |
| int regno; |
| { |
| static int warn_user = 1; |
| if (regno == -1) |
| { |
| for (regno = 0; regno < NUM_REGS; regno++) |
| gdbsim_fetch_register (regno); |
| } |
| else if (REGISTER_NAME (regno) != NULL |
| && *REGISTER_NAME (regno) != '\0') |
| { |
| char buf[MAX_REGISTER_RAW_SIZE]; |
| int nr_bytes; |
| if (REGISTER_SIM_REGNO (regno) >= 0) |
| nr_bytes = sim_fetch_register (gdbsim_desc, |
| REGISTER_SIM_REGNO (regno), |
| buf, REGISTER_RAW_SIZE (regno)); |
| else |
| nr_bytes = 0; |
| if (nr_bytes == 0) |
| /* register not applicable, supply zero's */ |
| memset (buf, 0, MAX_REGISTER_RAW_SIZE); |
| else if (nr_bytes > 0 && nr_bytes != REGISTER_RAW_SIZE (regno) |
| && warn_user) |
| { |
| fprintf_unfiltered (gdb_stderr, |
| "Size of register %s (%d/%d) incorrect (%d instead of %d))", |
| REGISTER_NAME (regno), |
| regno, REGISTER_SIM_REGNO (regno), |
| nr_bytes, REGISTER_RAW_SIZE (regno)); |
| warn_user = 0; |
| } |
| supply_register (regno, buf); |
| if (sr_get_debug ()) |
| { |
| printf_filtered ("gdbsim_fetch_register: %d", regno); |
| /* FIXME: We could print something more intelligible. */ |
| dump_mem (buf, REGISTER_RAW_SIZE (regno)); |
| } |
| } |
| } |
| |
| |
| static void |
| gdbsim_store_register (regno) |
| int regno; |
| { |
| if (regno == -1) |
| { |
| for (regno = 0; regno < NUM_REGS; regno++) |
| gdbsim_store_register (regno); |
| } |
| else if (REGISTER_NAME (regno) != NULL |
| && *REGISTER_NAME (regno) != '\0' |
| && REGISTER_SIM_REGNO (regno) >= 0) |
| { |
| char tmp[MAX_REGISTER_RAW_SIZE]; |
| int nr_bytes; |
| read_register_gen (regno, tmp); |
| nr_bytes = sim_store_register (gdbsim_desc, |
| REGISTER_SIM_REGNO (regno), |
| tmp, REGISTER_RAW_SIZE (regno)); |
| if (nr_bytes > 0 && nr_bytes != REGISTER_RAW_SIZE (regno)) |
| internal_error ("Register size different to expected"); |
| if (sr_get_debug ()) |
| { |
| printf_filtered ("gdbsim_store_register: %d", regno); |
| /* FIXME: We could print something more intelligible. */ |
| dump_mem (tmp, REGISTER_RAW_SIZE (regno)); |
| } |
| } |
| } |
| |
| /* Kill the running program. This may involve closing any open files |
| and releasing other resources acquired by the simulated program. */ |
| |
| static void |
| gdbsim_kill () |
| { |
| if (sr_get_debug ()) |
| printf_filtered ("gdbsim_kill\n"); |
| |
| /* There is no need to `kill' running simulator - the simulator is |
| not running */ |
| inferior_pid = 0; |
| } |
| |
| /* Load an executable file into the target process. This is expected to |
| not only bring new code into the target process, but also to update |
| GDB's symbol tables to match. */ |
| |
| static void |
| gdbsim_load (prog, fromtty) |
| char *prog; |
| int fromtty; |
| { |
| if (sr_get_debug ()) |
| printf_filtered ("gdbsim_load: prog \"%s\"\n", prog); |
| |
| inferior_pid = 0; |
| |
| /* FIXME: We will print two messages on error. |
| Need error to either not print anything if passed NULL or need |
| another routine that doesn't take any arguments. */ |
| if (sim_load (gdbsim_desc, prog, NULL, fromtty) == SIM_RC_FAIL) |
| error ("unable to load program"); |
| |
| /* FIXME: If a load command should reset the targets registers then |
| a call to sim_create_inferior() should go here. */ |
| |
| program_loaded = 1; |
| } |
| |
| |
| /* Start an inferior process and set inferior_pid to its pid. |
| EXEC_FILE is the file to run. |
| ARGS is a string containing the arguments to the program. |
| ENV is the environment vector to pass. Errors reported with error(). |
| On VxWorks and various standalone systems, we ignore exec_file. */ |
| /* This is called not only when we first attach, but also when the |
| user types "run" after having attached. */ |
| |
| static void |
| gdbsim_create_inferior (exec_file, args, env) |
| char *exec_file; |
| char *args; |
| char **env; |
| { |
| int len; |
| char *arg_buf, **argv; |
| |
| if (exec_file == 0 || exec_bfd == 0) |
| warning ("No executable file specified."); |
| if (!program_loaded) |
| warning ("No program loaded."); |
| |
| if (sr_get_debug ()) |
| printf_filtered ("gdbsim_create_inferior: exec_file \"%s\", args \"%s\"\n", |
| (exec_file ? exec_file : "(NULL)"), |
| args); |
| |
| gdbsim_kill (); |
| remove_breakpoints (); |
| init_wait_for_inferior (); |
| |
| if (exec_file != NULL) |
| { |
| len = strlen (exec_file) + 1 + strlen (args) + 1 + /*slop */ 10; |
| arg_buf = (char *) alloca (len); |
| arg_buf[0] = '\0'; |
| strcat (arg_buf, exec_file); |
| strcat (arg_buf, " "); |
| strcat (arg_buf, args); |
| argv = buildargv (arg_buf); |
| make_cleanup_freeargv (argv); |
| } |
| else |
| argv = NULL; |
| sim_create_inferior (gdbsim_desc, exec_bfd, argv, env); |
| |
| inferior_pid = 42; |
| insert_breakpoints (); /* Needed to get correct instruction in cache */ |
| |
| clear_proceed_status (); |
| |
| /* NB: Entry point already set by sim_create_inferior. */ |
| proceed ((CORE_ADDR) -1, TARGET_SIGNAL_DEFAULT, 0); |
| } |
| |
| /* The open routine takes the rest of the parameters from the command, |
| and (if successful) pushes a new target onto the stack. |
| Targets should supply this routine, if only to provide an error message. */ |
| /* Called when selecting the simulator. EG: (gdb) target sim name. */ |
| |
| static void |
| gdbsim_open (args, from_tty) |
| char *args; |
| int from_tty; |
| { |
| int len; |
| char *arg_buf; |
| char **argv; |
| |
| if (sr_get_debug ()) |
| printf_filtered ("gdbsim_open: args \"%s\"\n", args ? args : "(null)"); |
| |
| /* Remove current simulator if one exists. Only do this if the simulator |
| has been opened because sim_close requires it. |
| This is important because the call to push_target below will cause |
| sim_close to be called if the simulator is already open, but push_target |
| is called after sim_open! We can't move the call to push_target before |
| the call to sim_open because sim_open may invoke `error'. */ |
| if (gdbsim_desc != NULL) |
| unpush_target (&gdbsim_ops); |
| |
| len = (7 + 1 /* gdbsim */ |
| + strlen (" -E little") |
| + strlen (" --architecture=xxxxxxxxxx") |
| + (args ? strlen (args) : 0) |
| + 50) /* slack */ ; |
| arg_buf = (char *) alloca (len); |
| strcpy (arg_buf, "gdbsim"); /* 7 */ |
| /* Specify the byte order for the target when it is both selectable |
| and explicitly specified by the user (not auto detected). */ |
| if (TARGET_BYTE_ORDER_SELECTABLE_P |
| && !TARGET_BYTE_ORDER_AUTO) |
| { |
| switch (TARGET_BYTE_ORDER) |
| { |
| case BIG_ENDIAN: |
| strcat (arg_buf, " -E big"); |
| break; |
| case LITTLE_ENDIAN: |
| strcat (arg_buf, " -E little"); |
| break; |
| default: |
| internal_error ("Value of TARGET_BYTE_ORDER unknown"); |
| } |
| } |
| /* Specify the architecture of the target when it has been |
| explicitly specified */ |
| if (!TARGET_ARCHITECTURE_AUTO) |
| { |
| strcat (arg_buf, " --architecture="); |
| strcat (arg_buf, TARGET_ARCHITECTURE->printable_name); |
| } |
| /* finally, any explicit args */ |
| if (args) |
| { |
| strcat (arg_buf, " "); /* 1 */ |
| strcat (arg_buf, args); |
| } |
| argv = buildargv (arg_buf); |
| if (argv == NULL) |
| error ("Insufficient memory available to allocate simulator arg list."); |
| make_cleanup_freeargv (argv); |
| |
| init_callbacks (); |
| gdbsim_desc = sim_open (SIM_OPEN_DEBUG, &gdb_callback, exec_bfd, argv); |
| |
| if (gdbsim_desc == 0) |
| error ("unable to create simulator instance"); |
| |
| push_target (&gdbsim_ops); |
| target_fetch_registers (-1); |
| printf_filtered ("Connected to the simulator.\n"); |
| } |
| |
| /* Does whatever cleanup is required for a target that we are no longer |
| going to be calling. Argument says whether we are quitting gdb and |
| should not get hung in case of errors, or whether we want a clean |
| termination even if it takes a while. This routine is automatically |
| always called just before a routine is popped off the target stack. |
| Closing file descriptors and freeing memory are typical things it should |
| do. */ |
| /* Close out all files and local state before this target loses control. */ |
| |
| static void |
| gdbsim_close (quitting) |
| int quitting; |
| { |
| if (sr_get_debug ()) |
| printf_filtered ("gdbsim_close: quitting %d\n", quitting); |
| |
| program_loaded = 0; |
| |
| if (gdbsim_desc != NULL) |
| { |
| sim_close (gdbsim_desc, quitting); |
| gdbsim_desc = NULL; |
| } |
| |
| end_callbacks (); |
| } |
| |
| /* Takes a program previously attached to and detaches it. |
| The program may resume execution (some targets do, some don't) and will |
| no longer stop on signals, etc. We better not have left any breakpoints |
| in the program or it'll die when it hits one. ARGS is arguments |
| typed by the user (e.g. a signal to send the process). FROM_TTY |
| says whether to be verbose or not. */ |
| /* Terminate the open connection to the remote debugger. |
| Use this when you want to detach and do something else with your gdb. */ |
| |
| static void |
| gdbsim_detach (args, from_tty) |
| char *args; |
| int from_tty; |
| { |
| if (sr_get_debug ()) |
| printf_filtered ("gdbsim_detach: args \"%s\"\n", args); |
| |
| pop_target (); /* calls gdbsim_close to do the real work */ |
| if (from_tty) |
| printf_filtered ("Ending simulator %s debugging\n", target_shortname); |
| } |
| |
| /* Resume execution of the target process. STEP says whether to single-step |
| or to run free; SIGGNAL is the signal value (e.g. SIGINT) to be given |
| to the target, or zero for no signal. */ |
| |
| static enum target_signal resume_siggnal; |
| static int resume_step; |
| |
| static void |
| gdbsim_resume (pid, step, siggnal) |
| int pid, step; |
| enum target_signal siggnal; |
| { |
| if (inferior_pid != 42) |
| error ("The program is not being run."); |
| |
| if (sr_get_debug ()) |
| printf_filtered ("gdbsim_resume: step %d, signal %d\n", step, siggnal); |
| |
| resume_siggnal = siggnal; |
| resume_step = step; |
| } |
| |
| /* Notify the simulator of an asynchronous request to stop. |
| |
| The simulator shall ensure that the stop request is eventually |
| delivered to the simulator. If the call is made while the |
| simulator is not running then the stop request is processed when |
| the simulator is next resumed. |
| |
| For simulators that do not support this operation, just abort */ |
| |
| static void |
| gdbsim_stop () |
| { |
| if (!sim_stop (gdbsim_desc)) |
| { |
| quit (); |
| } |
| } |
| |
| /* GDB version of os_poll_quit callback. |
| Taken from gdb/util.c - should be in a library */ |
| |
| static int |
| gdb_os_poll_quit (p) |
| host_callback *p; |
| { |
| if (ui_loop_hook != NULL) |
| ui_loop_hook (0); |
| |
| notice_quit (); |
| if (quit_flag) /* gdb's idea of quit */ |
| { |
| quit_flag = 0; /* we've stolen it */ |
| return 1; |
| } |
| else if (immediate_quit) |
| { |
| return 1; |
| } |
| return 0; |
| } |
| |
| /* Wait for inferior process to do something. Return pid of child, |
| or -1 in case of error; store status through argument pointer STATUS, |
| just as `wait' would. */ |
| |
| static void |
| gdbsim_cntrl_c (signo) |
| int signo; |
| { |
| gdbsim_stop (); |
| } |
| |
| static int |
| gdbsim_wait (pid, status) |
| int pid; |
| struct target_waitstatus *status; |
| { |
| static RETSIGTYPE (*prev_sigint) (); |
| int sigrc = 0; |
| enum sim_stop reason = sim_running; |
| |
| if (sr_get_debug ()) |
| printf_filtered ("gdbsim_wait\n"); |
| |
| #if defined (HAVE_SIGACTION) && defined (SA_RESTART) |
| { |
| struct sigaction sa, osa; |
| sa.sa_handler = gdbsim_cntrl_c; |
| sigemptyset (&sa.sa_mask); |
| sa.sa_flags = 0; |
| sigaction (SIGINT, &sa, &osa); |
| prev_sigint = osa.sa_handler; |
| } |
| #else |
| prev_sigint = signal (SIGINT, gdbsim_cntrl_c); |
| #endif |
| sim_resume (gdbsim_desc, resume_step, |
| target_signal_to_host (resume_siggnal)); |
| signal (SIGINT, prev_sigint); |
| resume_step = 0; |
| |
| sim_stop_reason (gdbsim_desc, &reason, &sigrc); |
| |
| switch (reason) |
| { |
| case sim_exited: |
| status->kind = TARGET_WAITKIND_EXITED; |
| status->value.integer = sigrc; |
| break; |
| case sim_stopped: |
| switch (sigrc) |
| { |
| case SIGABRT: |
| quit (); |
| break; |
| case SIGINT: |
| case SIGTRAP: |
| default: |
| status->kind = TARGET_WAITKIND_STOPPED; |
| /* The signal in sigrc is a host signal. That probably |
| should be fixed. */ |
| status->value.sig = target_signal_from_host (sigrc); |
| break; |
| } |
| break; |
| case sim_signalled: |
| status->kind = TARGET_WAITKIND_SIGNALLED; |
| /* The signal in sigrc is a host signal. That probably |
| should be fixed. */ |
| status->value.sig = target_signal_from_host (sigrc); |
| break; |
| case sim_running: |
| case sim_polling: |
| /* FIXME: Is this correct? */ |
| break; |
| } |
| |
| return inferior_pid; |
| } |
| |
| /* Get ready to modify the registers array. On machines which store |
| individual registers, this doesn't need to do anything. On machines |
| which store all the registers in one fell swoop, this makes sure |
| that registers contains all the registers from the program being |
| debugged. */ |
| |
| static void |
| gdbsim_prepare_to_store () |
| { |
| /* Do nothing, since we can store individual regs */ |
| } |
| |
| static int |
| gdbsim_xfer_inferior_memory (memaddr, myaddr, len, write, target) |
| CORE_ADDR memaddr; |
| char *myaddr; |
| int len; |
| int write; |
| struct target_ops *target; /* ignored */ |
| { |
| if (!program_loaded) |
| error ("No program loaded."); |
| |
| if (sr_get_debug ()) |
| { |
| /* FIXME: Send to something other than STDOUT? */ |
| printf_filtered ("gdbsim_xfer_inferior_memory: myaddr 0x"); |
| gdb_print_host_address (myaddr, gdb_stdout); |
| printf_filtered (", memaddr 0x%s, len %d, write %d\n", |
| paddr_nz (memaddr), len, write); |
| if (sr_get_debug () && write) |
| dump_mem (myaddr, len); |
| } |
| |
| if (write) |
| { |
| len = sim_write (gdbsim_desc, memaddr, myaddr, len); |
| } |
| else |
| { |
| len = sim_read (gdbsim_desc, memaddr, myaddr, len); |
| if (sr_get_debug () && len > 0) |
| dump_mem (myaddr, len); |
| } |
| return len; |
| } |
| |
| static void |
| gdbsim_files_info (target) |
| struct target_ops *target; |
| { |
| char *file = "nothing"; |
| |
| if (exec_bfd) |
| file = bfd_get_filename (exec_bfd); |
| |
| if (sr_get_debug ()) |
| printf_filtered ("gdbsim_files_info: file \"%s\"\n", file); |
| |
| if (exec_bfd) |
| { |
| printf_filtered ("\tAttached to %s running program %s\n", |
| target_shortname, file); |
| sim_info (gdbsim_desc, 0); |
| } |
| } |
| |
| /* Clear the simulator's notion of what the break points are. */ |
| |
| static void |
| gdbsim_mourn_inferior () |
| { |
| if (sr_get_debug ()) |
| printf_filtered ("gdbsim_mourn_inferior:\n"); |
| |
| remove_breakpoints (); |
| generic_mourn_inferior (); |
| } |
| |
| static int |
| gdbsim_insert_breakpoint (addr, contents_cache) |
| CORE_ADDR addr; |
| char *contents_cache; |
| { |
| #ifdef SIM_HAS_BREAKPOINTS |
| SIM_RC retcode; |
| |
| retcode = sim_set_breakpoint (gdbsim_desc, addr); |
| |
| switch (retcode) |
| { |
| case SIM_RC_OK: |
| return 0; |
| case SIM_RC_INSUFFICIENT_RESOURCES: |
| return ENOMEM; |
| default: |
| return EIO; |
| } |
| #else |
| return memory_insert_breakpoint (addr, contents_cache); |
| #endif |
| } |
| |
| static int |
| gdbsim_remove_breakpoint (addr, contents_cache) |
| CORE_ADDR addr; |
| char *contents_cache; |
| { |
| #ifdef SIM_HAS_BREAKPOINTS |
| SIM_RC retcode; |
| |
| retcode = sim_clear_breakpoint (gdbsim_desc, addr); |
| |
| switch (retcode) |
| { |
| case SIM_RC_OK: |
| case SIM_RC_UNKNOWN_BREAKPOINT: |
| return 0; |
| case SIM_RC_INSUFFICIENT_RESOURCES: |
| return ENOMEM; |
| default: |
| return EIO; |
| } |
| #else |
| return memory_remove_breakpoint (addr, contents_cache); |
| #endif |
| } |
| |
| /* Pass the command argument through to the simulator verbatim. The |
| simulator must do any command interpretation work. */ |
| |
| void |
| simulator_command (args, from_tty) |
| char *args; |
| int from_tty; |
| { |
| if (gdbsim_desc == NULL) |
| { |
| |
| /* PREVIOUSLY: The user may give a command before the simulator |
| is opened. [...] (??? assuming of course one wishes to |
| continue to allow commands to be sent to unopened simulators, |
| which isn't entirely unreasonable). */ |
| |
| /* The simulator is a builtin abstraction of a remote target. |
| Consistent with that model, access to the simulator, via sim |
| commands, is restricted to the period when the channel to the |
| simulator is open. */ |
| |
| error ("Not connected to the simulator target"); |
| } |
| |
| sim_do_command (gdbsim_desc, args); |
| |
| /* Invalidate the register cache, in case the simulator command does |
| something funny. */ |
| registers_changed (); |
| } |
| |
| /* Define the target subroutine names */ |
| |
| struct target_ops gdbsim_ops; |
| |
| static void |
| init_gdbsim_ops (void) |
| { |
| gdbsim_ops.to_shortname = "sim"; |
| gdbsim_ops.to_longname = "simulator"; |
| gdbsim_ops.to_doc = "Use the compiled-in simulator."; |
| gdbsim_ops.to_open = gdbsim_open; |
| gdbsim_ops.to_close = gdbsim_close; |
| gdbsim_ops.to_attach = NULL; |
| gdbsim_ops.to_post_attach = NULL; |
| gdbsim_ops.to_require_attach = NULL; |
| gdbsim_ops.to_detach = gdbsim_detach; |
| gdbsim_ops.to_require_detach = NULL; |
| gdbsim_ops.to_resume = gdbsim_resume; |
| gdbsim_ops.to_wait = gdbsim_wait; |
| gdbsim_ops.to_post_wait = NULL; |
| gdbsim_ops.to_fetch_registers = gdbsim_fetch_register; |
| gdbsim_ops.to_store_registers = gdbsim_store_register; |
| gdbsim_ops.to_prepare_to_store = gdbsim_prepare_to_store; |
| gdbsim_ops.to_xfer_memory = gdbsim_xfer_inferior_memory; |
| gdbsim_ops.to_files_info = gdbsim_files_info; |
| gdbsim_ops.to_insert_breakpoint = gdbsim_insert_breakpoint; |
| gdbsim_ops.to_remove_breakpoint = gdbsim_remove_breakpoint; |
| gdbsim_ops.to_terminal_init = NULL; |
| gdbsim_ops.to_terminal_inferior = NULL; |
| gdbsim_ops.to_terminal_ours_for_output = NULL; |
| gdbsim_ops.to_terminal_ours = NULL; |
| gdbsim_ops.to_terminal_info = NULL; |
| gdbsim_ops.to_kill = gdbsim_kill; |
| gdbsim_ops.to_load = gdbsim_load; |
| gdbsim_ops.to_lookup_symbol = NULL; |
| gdbsim_ops.to_create_inferior = gdbsim_create_inferior; |
| gdbsim_ops.to_post_startup_inferior = NULL; |
| gdbsim_ops.to_acknowledge_created_inferior = NULL; |
| gdbsim_ops.to_clone_and_follow_inferior = NULL; |
| gdbsim_ops.to_post_follow_inferior_by_clone = NULL; |
| gdbsim_ops.to_insert_fork_catchpoint = NULL; |
| gdbsim_ops.to_remove_fork_catchpoint = NULL; |
| gdbsim_ops.to_insert_vfork_catchpoint = NULL; |
| gdbsim_ops.to_remove_vfork_catchpoint = NULL; |
| gdbsim_ops.to_has_forked = NULL; |
| gdbsim_ops.to_has_vforked = NULL; |
| gdbsim_ops.to_can_follow_vfork_prior_to_exec = NULL; |
| gdbsim_ops.to_post_follow_vfork = NULL; |
| gdbsim_ops.to_insert_exec_catchpoint = NULL; |
| gdbsim_ops.to_remove_exec_catchpoint = NULL; |
| gdbsim_ops.to_has_execd = NULL; |
| gdbsim_ops.to_reported_exec_events_per_exec_call = NULL; |
| gdbsim_ops.to_has_exited = NULL; |
| gdbsim_ops.to_mourn_inferior = gdbsim_mourn_inferior; |
| gdbsim_ops.to_can_run = 0; |
| gdbsim_ops.to_notice_signals = 0; |
| gdbsim_ops.to_thread_alive = 0; |
| gdbsim_ops.to_stop = gdbsim_stop; |
| gdbsim_ops.to_pid_to_exec_file = NULL; |
| gdbsim_ops.to_core_file_to_sym_file = NULL; |
| gdbsim_ops.to_stratum = process_stratum; |
| gdbsim_ops.DONT_USE = NULL; |
| gdbsim_ops.to_has_all_memory = 1; |
| gdbsim_ops.to_has_memory = 1; |
| gdbsim_ops.to_has_stack = 1; |
| gdbsim_ops.to_has_registers = 1; |
| gdbsim_ops.to_has_execution = 1; |
| gdbsim_ops.to_sections = NULL; |
| gdbsim_ops.to_sections_end = NULL; |
| gdbsim_ops.to_magic = OPS_MAGIC; |
| |
| #ifdef TARGET_REDEFINE_DEFAULT_OPS |
| TARGET_REDEFINE_DEFAULT_OPS (&gdbsim_ops); |
| #endif |
| } |
| |
| void |
| _initialize_remote_sim () |
| { |
| init_gdbsim_ops (); |
| add_target (&gdbsim_ops); |
| |
| add_com ("sim <command>", class_obscure, simulator_command, |
| "Send a command to the simulator."); |
| } |