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Diffstat (limited to 'gdb/remote-sp64sim.c')
| -rw-r--r-- | gdb/remote-sp64sim.c | 493 |
1 files changed, 0 insertions, 493 deletions
diff --git a/gdb/remote-sp64sim.c b/gdb/remote-sp64sim.c index 1bc6250..e69de29 100644 --- a/gdb/remote-sp64sim.c +++ b/gdb/remote-sp64sim.c @@ -1,493 +0,0 @@ -/* Generic remote debugging interface for simulators. - Copyright 1993 Free Software Foundation, Inc. - Contributed by Cygnus Support. - Steve Chamberlain (sac@cygnus.com) and Doug Evans (dje@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., 675 Mass Ave, Cambridge, MA 02139, USA. */ - -#include "defs.h" -#include "inferior.h" -#include "wait.h" -#include "value.h" -#include <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 "remote-sim.h" - -/* Naming conventions: - - simif_xxx are internal objects that describe top level interfaces to the - simulator (simif for SIMulator InterFace, duh...). - - sim_xxx are external counterparts to the simif_xxx objects that must be - provided by the simulator. - - See simif.h for a description. */ - -/* Forward data declarations */ -extern struct target_ops simif_ops; - -int sim_verbose = 0; /* available to the simulator to use */ - -static int program_loaded = 0; - -static void dump_mem (); - -static void -simif_fetch_register (regno) -int regno; -{ - if (regno == -1) - { - for (regno = 0; regno < NUM_REGS; regno++) - simif_fetch_register (regno); - } - else - { - char buf[MAX_REGISTER_RAW_SIZE]; - - sim_fetch_register (regno, buf); - supply_register (regno, buf); - if (sim_verbose) - { - printf_filtered ("simif_fetch_register: %d", regno); - /* FIXME: We could print something more intelligible. */ - dump_mem (buf, REGISTER_RAW_SIZE (regno)); - } - } -} - -static void -simif_store_register (regno) -int regno; -{ - if (regno == -1) - { - for (regno = 0; regno < NUM_REGS; regno++) - simif_store_register (regno); - } - else - { - /* FIXME: Until read_register() returns LONGEST, we have this. */ - char value[MAX_REGISTER_RAW_SIZE]; - - read_register_gen (regno, value); - SWAP_TARGET_AND_HOST (value, REGISTER_RAW_SIZE (regno)); - sim_store_register (regno, value); - if (sim_verbose) - { - printf_filtered ("simif_store_register: %d", regno); - /* FIXME: We could print something more intelligible. */ - dump_mem (value, REGISTER_RAW_SIZE (regno)); - } - } -} - -static void -simif_kill () -{ - if (sim_verbose) - printf_filtered ("simif_kill\n"); - - sim_kill (); /* close fd's, remove mappings */ - 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 -simif_load (prog, fromtty) - char *prog; - int fromtty; -{ - bfd *abfd; - - if (sim_verbose) - printf_filtered ("simif_load: prog \"%s\"\n", prog); - - inferior_pid = 0; - program_loaded = 0; - abfd = bfd_openr (prog, (char *) 0); - - if (!abfd) - error ("Unable to open file %s.", prog); - - if (bfd_check_format (abfd, bfd_object) == 0) - error ("File is not an object file."); - - if (sim_load (abfd, prog) != 0) - return; - - program_loaded = 1; - - sim_set_pc (abfd->start_address); -} - -/* - * This is a utility routine that sim_load() can call to do the work. - * The result is 0 for success, non-zero for failure. - * - * Eg: int sim_load (bfd *bfd, char *prog) { return sim_load_standard (bfd); } - */ - -sim_load_standard (abfd) - bfd *abfd; -{ - asection *s; - - s = abfd->sections; - while (s != (asection *)NULL) - { - if (s->flags & SEC_LOAD) - { - int i; - int delta = 4096; - char *buffer = xmalloc (delta); - printf_filtered ("%s\t: 0x%4x .. 0x%4x ", - s->name, s->vma, s->vma + s->_raw_size); - for (i = 0; i < s->_raw_size; i+= delta) - { - int sub_delta = delta; - if (sub_delta > s->_raw_size - i) - sub_delta = s->_raw_size - i ; - - bfd_get_section_contents (abfd, s, buffer, i, sub_delta); - sim_write (s->vma + i, buffer, sub_delta); - printf_filtered ("*"); - fflush (stdout); - } - printf_filtered ("\n"); - free (buffer); - } - s = s->next; - } - - return 0; -} - -/* Start an inferior process and set inferior_pid to its pid. - EXEC_FILE is the file to run. - ALLARGS 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 -simif_create_inferior (exec_file, args, env) - char *exec_file; - char *args; - char **env; -{ - int len,entry_pt; - char *arg_buf,**argv; - - if (! program_loaded) - error ("No program loaded."); - - if (sim_verbose) - printf_filtered ("simif_create_inferior: exec_file \"%s\", args \"%s\"\n", - exec_file, args); - - if (exec_file == 0 || exec_bfd == 0) - error ("No exec file specified."); - - entry_pt = (int) bfd_get_start_address (exec_bfd); - - simif_kill (NULL, NULL); - remove_breakpoints (); - init_wait_for_inferior (); - - len = 5 + 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, (char *) argv); - /* FIXME: remote-sim.h says targets that don't support this return - non-zero. Perhaps distinguish between "not supported" and other errors? - Or maybe that can be the only error. */ - if (sim_set_args (argv, env) != 0) - return; - - inferior_pid = 42; - insert_breakpoints (); /* Needed to get correct instruction in cache */ - proceed (entry_pt, -1, 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 -simif_open (args, from_tty) - char *args; - int from_tty; -{ - if (sim_verbose) - printf_filtered ("simif_open: args \"%s\"\n", args); - - if (sim_open (args) != 0) - { - error ("Unable to initialize simulator (insufficient memory?)."); - return; - } - - push_target (&simif_ops); - target_fetch_registers (-1); - - /* FIXME: check from_tty here? */ - 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 -simif_close (quitting) - int quitting; -{ - if (sim_verbose) - printf_filtered ("simif_close: quitting %d\n", quitting); - - program_loaded = 0; - - /* FIXME: Need to call sim_close() to close all files and - delete all mappings. */ -} - -/* 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 -simif_detach (args,from_tty) - char *args; - int from_tty; -{ - if (sim_verbose) - printf_filtered ("simif_detach: args \"%s\"\n", args); - - pop_target (); /* calls simif_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 void -simif_resume (pid, step, siggnal) - int pid, step, siggnal; -{ - if (sim_verbose) - printf_filtered ("simif_resume: step %d, signal %d\n", step, siggnal); - - sim_resume (step, siggnal); -} - -/* 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 int -simif_wait (status) - WAITTYPE *status; -{ - if (sim_verbose) - printf_filtered ("simif_wait: "); -#if 1 - *status = sim_stop_signal (); -#else - WSETSTOP (*status, sim_stop_signal ()); -#endif - if (sim_verbose) - printf_filtered ("status %d\n", *status); - return 0; -} - -/* 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 -simif_prepare_to_store () -{ - /* Do nothing, since we can store individual regs */ -} - -static int -simif_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 (sim_verbose) - { - printf_filtered ("simif_xfer_inferior_memory: myaddr 0x%x, memaddr 0x%x, len %d, write %d\n", - myaddr, memaddr, len, write); - if (sim_verbose && write) - dump_mem(myaddr, len); - } - - if (write) - { - len = sim_write (memaddr, myaddr, len); - } - else - { - len = sim_read (memaddr, myaddr, len); - if (sim_verbose && len > 0) - dump_mem(myaddr, len); - } - return len; -} - -static void -simif_files_info (target) - struct target_ops *target; -{ - char *file = "nothing"; - - if (exec_bfd) - file = bfd_get_filename (exec_bfd); - - if (sim_verbose) - printf_filtered ("simif_files_info: file \"%s\"\n", file); - - if (exec_bfd) - { - printf_filtered ("\tAttached to %s running program %s\n", - target_shortname, file); - sim_info (); - } -} - -/* Clear the sims notion of what the break points are. */ - -static void -simif_mourn_inferior () -{ - if (sim_verbose) - printf_filtered ("simif_mourn_inferior:\n"); - - remove_breakpoints (); - generic_mourn_inferior (); -} - -/* Define the target subroutine names */ - -struct target_ops simif_ops = -{ - "sim", "simulator", - "Use the simulator", - simif_open, simif_close, - 0, simif_detach, simif_resume, simif_wait, /* attach */ - simif_fetch_register, simif_store_register, - simif_prepare_to_store, - simif_xfer_inferior_memory, - simif_files_info, - 0, 0, /* Breakpoints */ - 0, 0, 0, 0, 0, /* Terminal handling */ - simif_kill, /* FIXME, kill */ - simif_load, - 0, /* lookup_symbol */ - simif_create_inferior, /* create_inferior */ - simif_mourn_inferior, /* mourn_inferior FIXME */ - 0, /* can_run */ - 0, /* notice_signals */ - process_stratum, 0, /* next */ - 1, 1, 1, 1, 1, /* all mem, mem, stack, regs, exec */ - 0, 0, /* Section pointers */ - OPS_MAGIC, /* Always the last thing */ -}; - -static void -simif_snoop () -{ - sim_verbose = ! sim_verbose; - if (sim_verbose) - printf_filtered ("Snoop enabled\n"); - else - printf_filtered ("Snoop disabled\n"); - -} - -/***********************************************************************/ - -void -_initialize_remote_sim () -{ - add_target (&simif_ops); - add_com ("snoop", class_obscure, simif_snoop, - "Show what commands are going to the simulator"); -} - -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%x", 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"); - } - } -} |