| /* Remote debugging interface for Am290*0 running MiniMON monitor, for GDB. |
| Copyright 1990, 1991, 1992 Free Software Foundation, Inc. |
| Originally written by Daniel Mann at AMD. |
| |
| 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. */ |
| |
| /* This is like remote.c but ecpects MiniMON to be running on the Am29000 |
| target hardware. |
| - David Wood (wood@lab.ultra.nyu.edu) at New York University adapted this |
| file to gdb 3.95. I was unable to get this working on sun3os4 |
| with termio, only with sgtty. Because we are only attempting to |
| use this module to debug our kernel, which is already loaded when |
| gdb is started up, I did not code up the file downloading facilities. |
| As a result this module has only the stubs to download files. |
| You should get tagged at compile time if you need to make any |
| changes/additions. */ |
| |
| #include "defs.h" |
| #include "inferior.h" |
| #include "wait.h" |
| #include "value.h" |
| #include <ctype.h> |
| #include <fcntl.h> |
| #include <signal.h> |
| #include <errno.h> |
| #include "gdb_string.h" |
| #include "terminal.h" |
| #include "minimon.h" |
| #include "target.h" |
| |
| /* Offset of member MEMBER in a struct of type TYPE. */ |
| #define offsetof(TYPE, MEMBER) ((int) &((TYPE *)0)->MEMBER) |
| |
| #define DRAIN_INPUT() (msg_recv_serial((union msg_t*)0)) |
| |
| extern int stop_soon_quietly; /* for wait_for_inferior */ |
| |
| static void mm_resume (); |
| static void mm_fetch_registers (); |
| static int fetch_register (); |
| static void mm_store_registers (); |
| static int store_register (); |
| static int regnum_to_srnum (); |
| static void mm_close (); |
| static char *msg_str (); |
| static char *error_msg_str (); |
| static int expect_msg (); |
| static void init_target_mm (); |
| static int mm_memory_space (); |
| |
| #define FREEZE_MODE (read_register(CPS_REGNUM) && 0x400) |
| #define USE_SHADOW_PC ((processor_type == a29k_freeze_mode) && FREEZE_MODE) |
| |
| /* FIXME: Replace with `set remotedebug'. */ |
| #define LLOG_FILE "minimon.log" |
| #if defined (LOG_FILE) |
| FILE *log_file; |
| #endif |
| |
| /* |
| * Size of message buffers. I couldn't get memory reads to work when |
| * the byte_count was larger than 512 (it may be a baud rate problem). |
| */ |
| #define BUFER_SIZE 512 |
| /* |
| * Size of data area in message buffer on the TARGET (remote system). |
| */ |
| #define MAXDATA_T (target_config.max_msg_size - \ |
| offsetof(struct write_r_msg_t,data[0])) |
| /* |
| * Size of data area in message buffer on the HOST (gdb). |
| */ |
| #define MAXDATA_H (BUFER_SIZE - offsetof(struct write_r_msg_t,data[0])) |
| /* |
| * Defined as the minimum size of data areas of the two message buffers |
| */ |
| #define MAXDATA (MAXDATA_H < MAXDATA_T ? MAXDATA_H : MAXDATA_T) |
| |
| static char out_buf[BUFER_SIZE]; |
| static char in_buf[BUFER_SIZE]; |
| |
| int msg_recv_serial (); |
| int msg_send_serial (); |
| |
| #define MAX_RETRIES 5000 |
| extern struct target_ops mm_ops; /* Forward declaration */ |
| struct config_msg_t target_config; /* HIF needs this */ |
| union msg_t *out_msg_buf = (union msg_t *) out_buf; |
| union msg_t *in_msg_buf = (union msg_t *) in_buf; |
| |
| static int timeout = 5; |
| |
| /* Descriptor for I/O to remote machine. Initialize it to -1 so that |
| mm_open knows that we don't have a file open when the program |
| starts. */ |
| int mm_desc = -1; |
| |
| /* stream which is fdopen'd from mm_desc. Only valid when |
| mm_desc != -1. */ |
| FILE *mm_stream; |
| |
| /* Called when SIGALRM signal sent due to alarm() timeout. */ |
| #ifndef HAVE_TERMIO |
| |
| #ifndef __STDC__ |
| #ifndef volatile |
| #define volatile |
| /**/ |
| # endif |
| #endif |
| volatile int n_alarms; |
| |
| static void |
| mm_timer () |
| { |
| #if 0 |
| if (kiodebug) |
| printf ("mm_timer called\n"); |
| #endif |
| n_alarms++; |
| } |
| #endif /* HAVE_TERMIO */ |
| |
| /* malloc'd name of the program on the remote system. */ |
| static char *prog_name = NULL; |
| |
| |
| /* Number of SIGTRAPs we need to simulate. That is, the next |
| NEED_ARTIFICIAL_TRAP calls to mm_wait should just return |
| SIGTRAP without actually waiting for anything. */ |
| |
| /**************************************************** REMOTE_CREATE_INFERIOR */ |
| /* This is called not only when we first attach, but also when the |
| user types "run" after having attached. */ |
| static void |
| mm_create_inferior (execfile, args, env) |
| char *execfile; |
| char *args; |
| char **env; |
| { |
| #define MAX_TOKENS 25 |
| #define BUFFER_SIZE 256 |
| int token_count; |
| int result; |
| char *token[MAX_TOKENS]; |
| char cmd_line[BUFFER_SIZE]; |
| |
| if (args && *args) |
| error ("Can't pass arguments to remote mm process (yet)."); |
| |
| if (execfile == 0 /* || exec_bfd == 0 */ ) |
| error ("No executable file specified"); |
| |
| if (!mm_stream) |
| { |
| printf ("Minimon not open yet.\n"); |
| return; |
| } |
| |
| /* On ultra3 (NYU) we assume the kernel is already running so there is |
| no file to download. |
| FIXME: Fixed required here -> load your program, possibly with mm_load(). |
| */ |
| printf_filtered ("\n\ |
| Assuming you are at NYU debuging a kernel, i.e., no need to download.\n\n"); |
| |
| /* We will get a task spawn event immediately. */ |
| init_wait_for_inferior (); |
| clear_proceed_status (); |
| stop_soon_quietly = 1; |
| proceed (-1, TARGET_SIGNAL_DEFAULT, 0); |
| normal_stop (); |
| } |
| /**************************************************** REMOTE_MOURN_INFERIOR */ |
| static void |
| mm_mourn () |
| { |
| pop_target (); /* Pop back to no-child state */ |
| generic_mourn_inferior (); |
| } |
| |
| /********************************************************************** damn_b |
| */ |
| /* Translate baud rates from integers to damn B_codes. Unix should |
| have outgrown this crap years ago, but even POSIX wouldn't buck it. */ |
| |
| #ifndef B19200 |
| #define B19200 EXTA |
| #endif |
| #ifndef B38400 |
| #define B38400 EXTB |
| #endif |
| |
| static struct |
| { |
| int rate, damn_b; |
| } |
| baudtab[] = |
| { |
| { |
| 0, B0 |
| } |
| , |
| { |
| 50, B50 |
| } |
| , |
| { |
| 75, B75 |
| } |
| , |
| { |
| 110, B110 |
| } |
| , |
| { |
| 134, B134 |
| } |
| , |
| { |
| 150, B150 |
| } |
| , |
| { |
| 200, B200 |
| } |
| , |
| { |
| 300, B300 |
| } |
| , |
| { |
| 600, B600 |
| } |
| , |
| { |
| 1200, B1200 |
| } |
| , |
| { |
| 1800, B1800 |
| } |
| , |
| { |
| 2400, B2400 |
| } |
| , |
| { |
| 4800, B4800 |
| } |
| , |
| { |
| 9600, B9600 |
| } |
| , |
| { |
| 19200, B19200 |
| } |
| , |
| { |
| 38400, B38400 |
| } |
| , |
| { |
| -1, -1 |
| } |
| , |
| }; |
| |
| static int |
| damn_b (rate) |
| int rate; |
| { |
| int i; |
| |
| for (i = 0; baudtab[i].rate != -1; i++) |
| if (rate == baudtab[i].rate) |
| return baudtab[i].damn_b; |
| return B38400; /* Random */ |
| } |
| |
| |
| /***************************************************************** REMOTE_OPEN |
| ** Open a connection to remote minimon. |
| NAME is the filename used for communication, then a space, |
| then the baud rate. |
| 'target adapt /dev/ttya 9600 [prognam]' for example. |
| */ |
| |
| static char *dev_name; |
| int baudrate = 9600; |
| static void |
| mm_open (name, from_tty) |
| char *name; |
| int from_tty; |
| { |
| TERMINAL sg; |
| unsigned int prl; |
| char *p; |
| |
| /* Find the first whitespace character, it separates dev_name from |
| prog_name. */ |
| for (p = name; |
| p && *p && !isspace (*p); p++) |
| ; |
| if (p == 0 || *p == '\0') |
| erroid: |
| error ("Usage : <command> <serial-device> <baud-rate> [progname]"); |
| dev_name = (char *) xmalloc (p - name + 1); |
| strncpy (dev_name, name, p - name); |
| dev_name[p - name] = '\0'; |
| |
| /* Skip over the whitespace after dev_name */ |
| for (; isspace (*p); p++) |
| /*EMPTY */ ; |
| |
| if (1 != sscanf (p, "%d ", &baudrate)) |
| goto erroid; |
| |
| /* Skip the number and then the spaces */ |
| for (; isdigit (*p); p++) |
| /*EMPTY */ ; |
| for (; isspace (*p); p++) |
| /*EMPTY */ ; |
| |
| if (prog_name != NULL) |
| free (prog_name); |
| prog_name = savestring (p, strlen (p)); |
| |
| |
| if (mm_desc >= 0) |
| close (mm_desc); |
| |
| mm_desc = open (dev_name, O_RDWR); |
| if (mm_desc < 0) |
| perror_with_name (dev_name); |
| ioctl (mm_desc, TIOCGETP, &sg); |
| #ifdef HAVE_TERMIO |
| sg.c_cc[VMIN] = 0; /* read with timeout. */ |
| sg.c_cc[VTIME] = timeout * 10; |
| sg.c_lflag &= ~(ICANON | ECHO); |
| sg.c_cflag = (sg.c_cflag & ~CBAUD) | damn_b (baudrate); |
| #else |
| sg.sg_ispeed = damn_b (baudrate); |
| sg.sg_ospeed = damn_b (baudrate); |
| sg.sg_flags |= RAW; |
| sg.sg_flags |= ANYP; |
| sg.sg_flags &= ~ECHO; |
| #endif |
| |
| |
| ioctl (mm_desc, TIOCSETP, &sg); |
| mm_stream = fdopen (mm_desc, "r+"); |
| |
| push_target (&mm_ops); |
| |
| #ifndef HAVE_TERMIO |
| #ifndef NO_SIGINTERRUPT |
| /* Cause SIGALRM's to make reads fail with EINTR instead of resuming |
| the read. */ |
| if (siginterrupt (SIGALRM, 1) != 0) |
| perror ("mm_open: error in siginterrupt"); |
| #endif |
| |
| /* Set up read timeout timer. */ |
| if ((void (*)) signal (SIGALRM, mm_timer) == (void (*)) -1) |
| perror ("mm_open: error in signal"); |
| #endif |
| |
| #if defined (LOG_FILE) |
| log_file = fopen (LOG_FILE, "w"); |
| if (log_file == NULL) |
| perror_with_name (LOG_FILE); |
| #endif |
| /* |
| ** Initialize target configuration structure (global) |
| */ |
| DRAIN_INPUT (); |
| out_msg_buf->config_req_msg.code = CONFIG_REQ; |
| out_msg_buf->config_req_msg.length = 4 * 0; |
| msg_send_serial (out_msg_buf); /* send config request message */ |
| |
| expect_msg (CONFIG, in_msg_buf, 1); |
| |
| a29k_get_processor_type (); |
| |
| /* Print out some stuff, letting the user now what's going on */ |
| printf_filtered ("Connected to MiniMon via %s.\n", dev_name); |
| /* FIXME: can this restriction be removed? */ |
| printf_filtered ("Remote debugging using virtual addresses works only\n"); |
| printf_filtered ("\twhen virtual addresses map 1:1 to physical addresses.\n") |
| ; |
| if (processor_type != a29k_freeze_mode) |
| { |
| fprintf_filtered (gdb_stderr, |
| "Freeze-mode debugging not available, and can only be done on an A29050.\n"); |
| } |
| |
| target_config.code = CONFIG; |
| target_config.length = 0; |
| target_config.processor_id = in_msg_buf->config_msg.processor_id; |
| target_config.version = in_msg_buf->config_msg.version; |
| target_config.I_mem_start = in_msg_buf->config_msg.I_mem_start; |
| target_config.I_mem_size = in_msg_buf->config_msg.I_mem_size; |
| target_config.D_mem_start = in_msg_buf->config_msg.D_mem_start; |
| target_config.D_mem_size = in_msg_buf->config_msg.D_mem_size; |
| target_config.ROM_start = in_msg_buf->config_msg.ROM_start; |
| target_config.ROM_size = in_msg_buf->config_msg.ROM_size; |
| target_config.max_msg_size = in_msg_buf->config_msg.max_msg_size; |
| target_config.max_bkpts = in_msg_buf->config_msg.max_bkpts; |
| target_config.coprocessor = in_msg_buf->config_msg.coprocessor; |
| target_config.reserved = in_msg_buf->config_msg.reserved; |
| if (from_tty) |
| { |
| printf ("Connected to MiniMON :\n"); |
| printf (" Debugcore version %d.%d\n", |
| 0x0f & (target_config.version >> 4), |
| 0x0f & (target_config.version)); |
| printf (" Configuration version %d.%d\n", |
| 0x0f & (target_config.version >> 12), |
| 0x0f & (target_config.version >> 8)); |
| printf (" Message system version %d.%d\n", |
| 0x0f & (target_config.version >> 20), |
| 0x0f & (target_config.version >> 16)); |
| printf (" Communication driver version %d.%d\n", |
| 0x0f & (target_config.version >> 28), |
| 0x0f & (target_config.version >> 24)); |
| } |
| |
| /* Leave the target running... |
| * The above message stopped the target in the dbg core (MiniMon), |
| * so restart the target out of MiniMon, |
| */ |
| out_msg_buf->go_msg.code = GO; |
| out_msg_buf->go_msg.length = 0; |
| msg_send_serial (out_msg_buf); |
| /* No message to expect after a GO */ |
| } |
| |
| /**************************************************************** REMOTE_CLOSE |
| ** Close the open connection to the minimon debugger. |
| Use this when you want to detach and do something else |
| with your gdb. */ |
| static void |
| mm_close (quitting) /*FIXME: how is quitting used */ |
| int quitting; |
| { |
| if (mm_desc < 0) |
| error ("Can't close remote connection: not debugging remotely."); |
| |
| /* We should never get here if there isn't something valid in |
| mm_desc and mm_stream. |
| |
| Due to a bug in Unix, fclose closes not only the stdio stream, |
| but also the file descriptor. So we don't actually close |
| mm_desc. */ |
| DRAIN_INPUT (); |
| fclose (mm_stream); |
| /* close (mm_desc); */ |
| |
| /* Do not try to close mm_desc again, later in the program. */ |
| mm_stream = NULL; |
| mm_desc = -1; |
| |
| #if defined (LOG_FILE) |
| if (ferror (log_file)) |
| printf ("Error writing log file.\n"); |
| if (fclose (log_file) != 0) |
| printf ("Error closing log file.\n"); |
| #endif |
| |
| printf ("Ending remote debugging\n"); |
| } |
| |
| /************************************************************* REMOTE_ATACH */ |
| /* Attach to a program that is already loaded and running |
| * Upon exiting the process's execution is stopped. |
| */ |
| static void |
| mm_attach (args, from_tty) |
| char *args; |
| int from_tty; |
| { |
| |
| if (!mm_stream) |
| error ("MiniMon not opened yet, use the 'target minimon' command.\n"); |
| |
| if (from_tty) |
| printf ("Attaching to remote program %s...\n", prog_name); |
| |
| /* Make sure the target is currently running, it is supposed to be. */ |
| /* FIXME: is it ok to send MiniMon a BREAK if it is already stopped in |
| * the dbg core. If so, we don't need to send this GO. |
| */ |
| out_msg_buf->go_msg.code = GO; |
| out_msg_buf->go_msg.length = 0; |
| msg_send_serial (out_msg_buf); |
| sleep (2); /* At the worst it will stop, receive a message, continue */ |
| |
| /* Send the mm a break. */ |
| out_msg_buf->break_msg.code = BREAK; |
| out_msg_buf->break_msg.length = 0; |
| msg_send_serial (out_msg_buf); |
| } |
| /********************************************************** REMOTE_DETACH */ |
| /* Terminate the open connection to the remote debugger. |
| Use this when you want to detach and do something else |
| with your gdb. Leave remote process running (with no breakpoints set). */ |
| static void |
| mm_detach (args, from_tty) |
| char *args; |
| int from_tty; |
| { |
| remove_breakpoints (); /* Just in case there were any left in */ |
| out_msg_buf->go_msg.code = GO; |
| out_msg_buf->go_msg.length = 0; |
| msg_send_serial (out_msg_buf); |
| pop_target (); /* calls mm_close to do the real work */ |
| } |
| |
| |
| /*************************************************************** REMOTE_RESUME |
| ** Tell the remote machine to resume. */ |
| |
| static void |
| mm_resume (pid, step, sig) |
| int pid, step; |
| enum target_signal sig; |
| { |
| if (sig != TARGET_SIGNAL_0) |
| warning ("Can't send signals to a remote MiniMon system."); |
| |
| if (step) |
| { |
| out_msg_buf->step_msg.code = STEP; |
| out_msg_buf->step_msg.length = 1 * 4; |
| out_msg_buf->step_msg.count = 1; /* step 1 instruction */ |
| msg_send_serial (out_msg_buf); |
| } |
| else |
| { |
| out_msg_buf->go_msg.code = GO; |
| out_msg_buf->go_msg.length = 0; |
| msg_send_serial (out_msg_buf); |
| } |
| } |
| |
| /***************************************************************** REMOTE_WAIT |
| ** Wait until the remote machine stops, then return, |
| storing status in STATUS just as `wait' would. */ |
| |
| static int |
| mm_wait (status) |
| struct target_waitstatus *status; |
| { |
| int i, result; |
| int old_timeout = timeout; |
| int old_immediate_quit = immediate_quit; |
| |
| status->kind = TARGET_WAITKIND_EXITED; |
| status->value.integer = 0; |
| |
| /* wait for message to arrive. It should be: |
| - A HIF service request. |
| - A HIF exit service request. |
| - A CHANNEL0_ACK. |
| - A CHANNEL1 request. |
| - a debugcore HALT message. |
| HIF services must be responded too, and while-looping continued. |
| If the target stops executing, mm_wait() should return. |
| */ |
| timeout = 0; /* Wait indefinetly for a message */ |
| immediate_quit = 1; /* Helps ability to QUIT */ |
| while (1) |
| { |
| while (msg_recv_serial (in_msg_buf)) |
| { |
| QUIT; /* Let user quit if they want */ |
| } |
| switch (in_msg_buf->halt_msg.code) |
| { |
| case HIF_CALL: |
| i = in_msg_buf->hif_call_rtn_msg.service_number; |
| result = service_HIF (in_msg_buf); |
| if (i == 1) /* EXIT */ |
| goto exit; |
| if (result) |
| printf ("Warning: failure during HIF service %d\n", i); |
| break; |
| case CHANNEL0_ACK: |
| service_HIF (in_msg_buf); |
| break; |
| case CHANNEL1: |
| i = in_msg_buf->channel1_msg.length; |
| in_msg_buf->channel1_msg.data[i] = '\0'; |
| printf ("%s", in_msg_buf->channel1_msg.data); |
| gdb_flush (gdb_stdout); |
| /* Send CHANNEL1_ACK message */ |
| out_msg_buf->channel1_ack_msg.code = CHANNEL1_ACK; |
| out_msg_buf->channel1_ack_msg.length = 0; |
| result = msg_send_serial (out_msg_buf); |
| break; |
| case HALT: |
| goto halted; |
| default: |
| goto halted; |
| } |
| } |
| halted: |
| /* FIXME, these printfs should not be here. This is a source level |
| debugger, guys! */ |
| if (in_msg_buf->halt_msg.trap_number == 0) |
| { |
| printf ("Am290*0 received vector number %d (break point)\n", |
| in_msg_buf->halt_msg.trap_number); |
| status->kind = TARGET_WAITKIND_STOPPED; |
| status->value.sig = TARGET_SIGNAL_TRAP; |
| } |
| else if (in_msg_buf->halt_msg.trap_number == 1) |
| { |
| printf ("Am290*0 received vector number %d\n", |
| in_msg_buf->halt_msg.trap_number); |
| status->kind = TARGET_WAITKIND_STOPPED; |
| status->value.sig = TARGET_SIGNAL_BUS; |
| } |
| else if (in_msg_buf->halt_msg.trap_number == 3 |
| || in_msg_buf->halt_msg.trap_number == 4) |
| { |
| printf ("Am290*0 received vector number %d\n", |
| in_msg_buf->halt_msg.trap_number); |
| status->kind = TARGET_WAITKIND_STOPPED; |
| status->value.sig = TARGET_SIGNAL_FPE; |
| } |
| else if (in_msg_buf->halt_msg.trap_number == 5) |
| { |
| printf ("Am290*0 received vector number %d\n", |
| in_msg_buf->halt_msg.trap_number); |
| status->kind = TARGET_WAITKIND_STOPPED; |
| status->value.sig = TARGET_SIGNAL_ILL; |
| } |
| else if (in_msg_buf->halt_msg.trap_number >= 6 |
| && in_msg_buf->halt_msg.trap_number <= 11) |
| { |
| printf ("Am290*0 received vector number %d\n", |
| in_msg_buf->halt_msg.trap_number); |
| status->kind = TARGET_WAITKIND_STOPPED; |
| status->value.sig = TARGET_SIGNAL_SEGV; |
| } |
| else if (in_msg_buf->halt_msg.trap_number == 12 |
| || in_msg_buf->halt_msg.trap_number == 13) |
| { |
| printf ("Am290*0 received vector number %d\n", |
| in_msg_buf->halt_msg.trap_number); |
| status->kind = TARGET_WAITKIND_STOPPED; |
| status->value.sig = TARGET_SIGNAL_ILL; |
| } |
| else if (in_msg_buf->halt_msg.trap_number == 14) |
| { |
| printf ("Am290*0 received vector number %d\n", |
| in_msg_buf->halt_msg.trap_number); |
| status->kind = TARGET_WAITKIND_STOPPED; |
| status->value.sig = TARGET_SIGNAL_ALRM; |
| } |
| else if (in_msg_buf->halt_msg.trap_number == 15) |
| { |
| status->kind = TARGET_WAITKIND_STOPPED; |
| status->value.sig = TARGET_SIGNAL_TRAP; |
| } |
| else if (in_msg_buf->halt_msg.trap_number >= 16 |
| && in_msg_buf->halt_msg.trap_number <= 21) |
| { |
| printf ("Am290*0 received vector number %d\n", |
| in_msg_buf->halt_msg.trap_number); |
| status->kind = TARGET_WAITKIND_STOPPED; |
| status->value.sig = TARGET_SIGNAL_INT; |
| } |
| else if (in_msg_buf->halt_msg.trap_number == 22) |
| { |
| printf ("Am290*0 received vector number %d\n", |
| in_msg_buf->halt_msg.trap_number); |
| status->kind = TARGET_WAITKIND_STOPPED; |
| status->value.sig = TARGET_SIGNAL_ILL; |
| } /* BREAK message was sent */ |
| else if (in_msg_buf->halt_msg.trap_number == 75) |
| { |
| status->kind = TARGET_WAITKIND_STOPPED; |
| status->value.sig = TARGET_SIGNAL_TRAP; |
| } |
| else |
| exit: |
| { |
| status->kind = TARGET_WAITKIND_EXITED; |
| status->value.integer = 0; |
| } |
| |
| timeout = old_timeout; /* Restore original timeout value */ |
| immediate_quit = old_immediate_quit; |
| return 0; |
| } |
| |
| /******************************************************* REMOTE_FETCH_REGISTERS |
| * Read a remote register 'regno'. |
| * If regno==-1 then read all the registers. |
| */ |
| static void |
| mm_fetch_registers (regno) |
| int regno; |
| { |
| INT32 *data_p; |
| |
| if (regno >= 0) |
| { |
| fetch_register (regno); |
| return; |
| } |
| |
| /* Gr1/rsp */ |
| out_msg_buf->read_req_msg.byte_count = 4 * 1; |
| out_msg_buf->read_req_msg.memory_space = GLOBAL_REG; |
| out_msg_buf->read_req_msg.address = 1; |
| msg_send_serial (out_msg_buf); |
| expect_msg (READ_ACK, in_msg_buf, 1); |
| data_p = &(in_msg_buf->read_r_ack_msg.data[0]); |
| supply_register (GR1_REGNUM, data_p); |
| |
| #if defined(GR64_REGNUM) /* Read gr64-127 */ |
| /* Global Registers gr64-gr95 */ |
| out_msg_buf->read_req_msg.code = READ_REQ; |
| out_msg_buf->read_req_msg.length = 4 * 3; |
| out_msg_buf->read_req_msg.byte_count = 4 * 32; |
| out_msg_buf->read_req_msg.memory_space = GLOBAL_REG; |
| out_msg_buf->read_req_msg.address = 64; |
| msg_send_serial (out_msg_buf); |
| expect_msg (READ_ACK, in_msg_buf, 1); |
| data_p = &(in_msg_buf->read_r_ack_msg.data[0]); |
| |
| for (regno = GR64_REGNUM; regno < GR64_REGNUM + 32; regno++) |
| { |
| supply_register (regno, data_p++); |
| } |
| #endif /* GR64_REGNUM */ |
| |
| /* Global Registers gr96-gr127 */ |
| out_msg_buf->read_req_msg.code = READ_REQ; |
| out_msg_buf->read_req_msg.length = 4 * 3; |
| out_msg_buf->read_req_msg.byte_count = 4 * 32; |
| out_msg_buf->read_req_msg.memory_space = GLOBAL_REG; |
| out_msg_buf->read_req_msg.address = 96; |
| msg_send_serial (out_msg_buf); |
| expect_msg (READ_ACK, in_msg_buf, 1); |
| data_p = &(in_msg_buf->read_r_ack_msg.data[0]); |
| |
| for (regno = GR96_REGNUM; regno < GR96_REGNUM + 32; regno++) |
| { |
| supply_register (regno, data_p++); |
| } |
| |
| /* Local Registers */ |
| out_msg_buf->read_req_msg.byte_count = 4 * (128); |
| out_msg_buf->read_req_msg.memory_space = LOCAL_REG; |
| out_msg_buf->read_req_msg.address = 0; |
| msg_send_serial (out_msg_buf); |
| expect_msg (READ_ACK, in_msg_buf, 1); |
| data_p = &(in_msg_buf->read_r_ack_msg.data[0]); |
| |
| for (regno = LR0_REGNUM; regno < LR0_REGNUM + 128; regno++) |
| { |
| supply_register (regno, data_p++); |
| } |
| |
| /* Protected Special Registers */ |
| out_msg_buf->read_req_msg.byte_count = 4 * 15; |
| out_msg_buf->read_req_msg.memory_space = SPECIAL_REG; |
| out_msg_buf->read_req_msg.address = 0; |
| msg_send_serial (out_msg_buf); |
| expect_msg (READ_ACK, in_msg_buf, 1); |
| data_p = &(in_msg_buf->read_r_ack_msg.data[0]); |
| |
| for (regno = 0; regno <= 14; regno++) |
| { |
| supply_register (SR_REGNUM (regno), data_p++); |
| } |
| if (USE_SHADOW_PC) |
| { /* Let regno_to_srnum() handle the register number */ |
| fetch_register (NPC_REGNUM); |
| fetch_register (PC_REGNUM); |
| fetch_register (PC2_REGNUM); |
| } |
| |
| /* Unprotected Special Registers */ |
| out_msg_buf->read_req_msg.byte_count = 4 * 8; |
| out_msg_buf->read_req_msg.memory_space = SPECIAL_REG; |
| out_msg_buf->read_req_msg.address = 128; |
| msg_send_serial (out_msg_buf); |
| expect_msg (READ_ACK, in_msg_buf, 1); |
| data_p = &(in_msg_buf->read_r_ack_msg.data[0]); |
| |
| for (regno = 128; regno <= 135; regno++) |
| { |
| supply_register (SR_REGNUM (regno), data_p++); |
| } |
| |
| /* There doesn't seem to be any way to get these. */ |
| { |
| int val = -1; |
| supply_register (FPE_REGNUM, &val); |
| supply_register (INTE_REGNUM, &val); |
| supply_register (FPS_REGNUM, &val); |
| supply_register (EXO_REGNUM, &val); |
| } |
| } |
| |
| |
| /****************************************************** REMOTE_STORE_REGISTERS |
| * Store register regno into the target. |
| * If regno==-1 then store all the registers. |
| * Result is 0 for success, -1 for failure. |
| */ |
| |
| static void |
| mm_store_registers (regno) |
| int regno; |
| { |
| int result; |
| |
| if (regno >= 0) |
| { |
| store_register (regno); |
| return; |
| } |
| |
| result = 0; |
| |
| out_msg_buf->write_r_msg.code = WRITE_REQ; |
| |
| /* Gr1/rsp */ |
| out_msg_buf->write_r_msg.byte_count = 4 * 1; |
| out_msg_buf->write_r_msg.length = 3 * 4 + out_msg_buf->write_r_msg.byte_count; |
| out_msg_buf->write_r_msg.memory_space = GLOBAL_REG; |
| out_msg_buf->write_r_msg.address = 1; |
| out_msg_buf->write_r_msg.data[0] = read_register (GR1_REGNUM); |
| |
| msg_send_serial (out_msg_buf); |
| if (!expect_msg (WRITE_ACK, in_msg_buf, 1)) |
| { |
| result = -1; |
| } |
| |
| #if defined(GR64_REGNUM) |
| /* Global registers gr64-gr95 */ |
| out_msg_buf->write_r_msg.byte_count = 4 * (32); |
| out_msg_buf->write_r_msg.length = 3 * 4 + out_msg_buf->write_r_msg.byte_count; |
| out_msg_buf->write_r_msg.address = 64; |
| |
| for (regno = GR64_REGNUM; regno < GR64_REGNUM + 32; regno++) |
| { |
| out_msg_buf->write_r_msg.data[regno - GR64_REGNUM] = read_register (regno); |
| } |
| msg_send_serial (out_msg_buf); |
| if (!expect_msg (WRITE_ACK, in_msg_buf, 1)) |
| { |
| result = -1; |
| } |
| #endif /* GR64_REGNUM */ |
| |
| /* Global registers gr96-gr127 */ |
| out_msg_buf->write_r_msg.byte_count = 4 * (32); |
| out_msg_buf->write_r_msg.length = 3 * 4 + out_msg_buf->write_r_msg.byte_count; |
| out_msg_buf->write_r_msg.address = 96; |
| for (regno = GR96_REGNUM; regno < GR96_REGNUM + 32; regno++) |
| { |
| out_msg_buf->write_r_msg.data[regno - GR96_REGNUM] = read_register (regno); |
| } |
| msg_send_serial (out_msg_buf); |
| if (!expect_msg (WRITE_ACK, in_msg_buf, 1)) |
| { |
| result = -1; |
| } |
| |
| /* Local Registers */ |
| out_msg_buf->write_r_msg.memory_space = LOCAL_REG; |
| out_msg_buf->write_r_msg.byte_count = 4 * 128; |
| out_msg_buf->write_r_msg.length = 3 * 4 + out_msg_buf->write_r_msg.byte_count; |
| out_msg_buf->write_r_msg.address = 0; |
| |
| for (regno = LR0_REGNUM; regno < LR0_REGNUM + 128; regno++) |
| { |
| out_msg_buf->write_r_msg.data[regno - LR0_REGNUM] = read_register (regno); |
| } |
| msg_send_serial (out_msg_buf); |
| if (!expect_msg (WRITE_ACK, in_msg_buf, 1)) |
| { |
| result = -1; |
| } |
| |
| /* Protected Special Registers */ |
| /* VAB through TMR */ |
| out_msg_buf->write_r_msg.memory_space = SPECIAL_REG; |
| out_msg_buf->write_r_msg.byte_count = 4 * 10; |
| out_msg_buf->write_r_msg.length = 3 * 4 + out_msg_buf->write_r_msg.byte_count; |
| out_msg_buf->write_r_msg.address = 0; |
| for (regno = 0; regno <= 9; regno++) /* VAB through TMR */ |
| out_msg_buf->write_r_msg.data[regno] = read_register (SR_REGNUM (regno)); |
| msg_send_serial (out_msg_buf); |
| if (!expect_msg (WRITE_ACK, in_msg_buf, 1)) |
| { |
| result = -1; |
| } |
| |
| /* PC0, PC1, PC2 possibly as shadow registers */ |
| out_msg_buf->write_r_msg.byte_count = 4 * 3; |
| out_msg_buf->write_r_msg.length = 3 * 4 + out_msg_buf->write_r_msg.byte_count; |
| for (regno = 10; regno <= 12; regno++) /* LRU and MMU */ |
| out_msg_buf->write_r_msg.data[regno - 10] = read_register (SR_REGNUM (regno)); |
| if (USE_SHADOW_PC) |
| out_msg_buf->write_r_msg.address = 20; /* SPC0 */ |
| else |
| out_msg_buf->write_r_msg.address = 10; /* PC0 */ |
| msg_send_serial (out_msg_buf); |
| if (!expect_msg (WRITE_ACK, in_msg_buf, 1)) |
| { |
| result = -1; |
| } |
| |
| /* LRU and MMU */ |
| out_msg_buf->write_r_msg.byte_count = 4 * 2; |
| out_msg_buf->write_r_msg.length = 3 * 4 + out_msg_buf->write_r_msg.byte_count; |
| out_msg_buf->write_r_msg.address = 13; |
| for (regno = 13; regno <= 14; regno++) /* LRU and MMU */ |
| out_msg_buf->write_r_msg.data[regno - 13] = read_register (SR_REGNUM (regno)); |
| msg_send_serial (out_msg_buf); |
| if (!expect_msg (WRITE_ACK, in_msg_buf, 1)) |
| { |
| result = -1; |
| } |
| |
| /* Unprotected Special Registers */ |
| out_msg_buf->write_r_msg.byte_count = 4 * 8; |
| out_msg_buf->write_r_msg.length = 3 * 4 + out_msg_buf->write_r_msg.byte_count; |
| out_msg_buf->write_r_msg.address = 128; |
| for (regno = 128; regno <= 135; regno++) |
| out_msg_buf->write_r_msg.data[regno - 128] = read_register (SR_REGNUM (regno)); |
| msg_send_serial (out_msg_buf); |
| if (!expect_msg (WRITE_ACK, in_msg_buf, 1)) |
| { |
| result = -1; |
| } |
| |
| registers_changed (); |
| } |
| |
| /*************************************************** REMOTE_PREPARE_TO_STORE */ |
| /* 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 |
| mm_prepare_to_store () |
| { |
| /* Do nothing, since we can store individual regs */ |
| } |
| |
| /******************************************************* REMOTE_XFER_MEMORY */ |
| static CORE_ADDR |
| translate_addr (addr) |
| CORE_ADDR addr; |
| { |
| #if defined(KERNEL_DEBUGGING) |
| /* Check for a virtual address in the kernel */ |
| /* Assume physical address of ublock is in paddr_u register */ |
| /* FIXME: doesn't work for user virtual addresses */ |
| if (addr >= UVADDR) |
| { |
| /* PADDR_U register holds the physical address of the ublock */ |
| CORE_ADDR i = (CORE_ADDR) read_register (PADDR_U_REGNUM); |
| return (i + addr - (CORE_ADDR) UVADDR); |
| } |
| else |
| { |
| return (addr); |
| } |
| #else |
| return (addr); |
| #endif |
| } |
| |
| /******************************************************* REMOTE_FILES_INFO */ |
| static void |
| mm_files_info () |
| { |
| printf ("\tAttached to %s at %d baud and running program %s.\n", |
| dev_name, baudrate, prog_name); |
| } |
| |
| /************************************************* REMOTE_INSERT_BREAKPOINT */ |
| static int |
| mm_insert_breakpoint (addr, contents_cache) |
| CORE_ADDR addr; |
| char *contents_cache; |
| { |
| out_msg_buf->bkpt_set_msg.code = BKPT_SET; |
| out_msg_buf->bkpt_set_msg.length = 4 * 4; |
| out_msg_buf->bkpt_set_msg.memory_space = I_MEM; |
| out_msg_buf->bkpt_set_msg.bkpt_addr = (ADDR32) addr; |
| out_msg_buf->bkpt_set_msg.pass_count = 1; |
| out_msg_buf->bkpt_set_msg.bkpt_type = -1; /* use illop for 29000 */ |
| msg_send_serial (out_msg_buf); |
| if (expect_msg (BKPT_SET_ACK, in_msg_buf, 1)) |
| { |
| return 0; /* Success */ |
| } |
| else |
| { |
| return 1; /* Failure */ |
| } |
| } |
| |
| /************************************************* REMOTE_DELETE_BREAKPOINT */ |
| static int |
| mm_remove_breakpoint (addr, contents_cache) |
| CORE_ADDR addr; |
| char *contents_cache; |
| { |
| out_msg_buf->bkpt_rm_msg.code = BKPT_RM; |
| out_msg_buf->bkpt_rm_msg.length = 4 * 3; |
| out_msg_buf->bkpt_rm_msg.memory_space = I_MEM; |
| out_msg_buf->bkpt_rm_msg.bkpt_addr = (ADDR32) addr; |
| msg_send_serial (out_msg_buf); |
| if (expect_msg (BKPT_RM_ACK, in_msg_buf, 1)) |
| { |
| return 0; /* Success */ |
| } |
| else |
| { |
| return 1; /* Failure */ |
| } |
| } |
| |
| |
| /******************************************************* REMOTE_KILL */ |
| static void |
| mm_kill (arg, from_tty) |
| char *arg; |
| int from_tty; |
| { |
| char buf[4]; |
| |
| #if defined(KERNEL_DEBUGGING) |
| /* We don't ever kill the kernel */ |
| if (from_tty) |
| { |
| printf ("Kernel not killed, but left in current state.\n"); |
| printf ("Use detach to leave kernel running.\n"); |
| } |
| #else |
| out_msg_buf->break_msg.code = BREAK; |
| out_msg_buf->bkpt_set_msg.length = 4 * 0; |
| expect_msg (HALT, in_msg_buf, from_tty); |
| if (from_tty) |
| { |
| printf ("Target has been stopped."); |
| printf ("Would you like to do a hardware reset (y/n) [n] "); |
| fgets (buf, 3, stdin); |
| if (buf[0] == 'y') |
| { |
| out_msg_buf->reset_msg.code = RESET; |
| out_msg_buf->bkpt_set_msg.length = 4 * 0; |
| expect_msg (RESET_ACK, in_msg_buf, from_tty); |
| printf ("Target has been reset."); |
| } |
| } |
| pop_target (); |
| #endif |
| } |
| |
| |
| |
| /***************************************************************************/ |
| /* |
| * Load a program into the target. |
| */ |
| static void |
| mm_load (arg_string, from_tty) |
| char *arg_string; |
| int from_tty; |
| { |
| dont_repeat (); |
| |
| #if defined(KERNEL_DEBUGGING) |
| printf ("The kernel had better be loaded already! Loading not done.\n"); |
| #else |
| if (arg_string == 0) |
| error ("The load command takes a file name"); |
| |
| arg_string = tilde_expand (arg_string); |
| make_cleanup (free, arg_string); |
| QUIT; |
| immediate_quit++; |
| error ("File loading is not yet supported for MiniMon."); |
| /* FIXME, code to load your file here... */ |
| /* You may need to do an init_target_mm() */ |
| /* init_target_mm(?,?,?,?,?,?,?,?); */ |
| immediate_quit--; |
| /* symbol_file_add (arg_string, from_tty, text_addr, 0, 0, 0, 0); */ |
| #endif |
| |
| } |
| |
| /************************************************ REMOTE_WRITE_INFERIOR_MEMORY |
| ** Copy LEN bytes of data from debugger memory at MYADDR |
| to inferior's memory at MEMADDR. Returns number of bytes written. */ |
| static int |
| mm_write_inferior_memory (memaddr, myaddr, len) |
| CORE_ADDR memaddr; |
| char *myaddr; |
| int len; |
| { |
| int i, nwritten; |
| |
| out_msg_buf->write_req_msg.code = WRITE_REQ; |
| out_msg_buf->write_req_msg.memory_space = mm_memory_space (memaddr); |
| |
| nwritten = 0; |
| while (nwritten < len) |
| { |
| int num_to_write = len - nwritten; |
| if (num_to_write > MAXDATA) |
| num_to_write = MAXDATA; |
| for (i = 0; i < num_to_write; i++) |
| out_msg_buf->write_req_msg.data[i] = myaddr[i + nwritten]; |
| out_msg_buf->write_req_msg.byte_count = num_to_write; |
| out_msg_buf->write_req_msg.length = 3 * 4 + num_to_write; |
| out_msg_buf->write_req_msg.address = memaddr + nwritten; |
| msg_send_serial (out_msg_buf); |
| |
| if (expect_msg (WRITE_ACK, in_msg_buf, 1)) |
| { |
| nwritten += in_msg_buf->write_ack_msg.byte_count; |
| } |
| else |
| { |
| break; |
| } |
| } |
| return (nwritten); |
| } |
| |
| /************************************************* REMOTE_READ_INFERIOR_MEMORY |
| ** Read LEN bytes from inferior memory at MEMADDR. Put the result |
| at debugger address MYADDR. Returns number of bytes read. */ |
| static int |
| mm_read_inferior_memory (memaddr, myaddr, len) |
| CORE_ADDR memaddr; |
| char *myaddr; |
| int len; |
| { |
| int i, nread; |
| |
| out_msg_buf->read_req_msg.code = READ_REQ; |
| out_msg_buf->read_req_msg.memory_space = mm_memory_space (memaddr); |
| |
| nread = 0; |
| while (nread < len) |
| { |
| int num_to_read = (len - nread); |
| if (num_to_read > MAXDATA) |
| num_to_read = MAXDATA; |
| out_msg_buf->read_req_msg.byte_count = num_to_read; |
| out_msg_buf->read_req_msg.length = 3 * 4 + num_to_read; |
| out_msg_buf->read_req_msg.address = memaddr + nread; |
| msg_send_serial (out_msg_buf); |
| |
| if (expect_msg (READ_ACK, in_msg_buf, 1)) |
| { |
| for (i = 0; i < in_msg_buf->read_ack_msg.byte_count; i++) |
| myaddr[i + nread] = in_msg_buf->read_ack_msg.data[i]; |
| nread += in_msg_buf->read_ack_msg.byte_count; |
| } |
| else |
| { |
| break; |
| } |
| } |
| return (nread); |
| } |
| |
| /* FIXME! Merge these two. */ |
| static int |
| mm_xfer_inferior_memory (memaddr, myaddr, len, write) |
| CORE_ADDR memaddr; |
| char *myaddr; |
| int len; |
| int write; |
| { |
| |
| memaddr = translate_addr (memaddr); |
| |
| if (write) |
| return mm_write_inferior_memory (memaddr, myaddr, len); |
| else |
| return mm_read_inferior_memory (memaddr, myaddr, len); |
| } |
| |
| |
| /********************************************************** MSG_SEND_SERIAL |
| ** This function is used to send a message over the |
| ** serial line. |
| ** |
| ** If the message is successfully sent, a zero is |
| ** returned. If the message was not sendable, a -1 |
| ** is returned. This function blocks. That is, it |
| ** does not return until the message is completely |
| ** sent, or until an error is encountered. |
| ** |
| */ |
| |
| int |
| msg_send_serial (msg_ptr) |
| union msg_t *msg_ptr; |
| { |
| INT32 message_size; |
| int byte_count; |
| int result; |
| char c; |
| |
| /* Send message header */ |
| byte_count = 0; |
| message_size = msg_ptr->generic_msg.length + (2 * sizeof (INT32)); |
| do |
| { |
| c = *((char *) msg_ptr + byte_count); |
| result = write (mm_desc, &c, 1); |
| if (result == 1) |
| { |
| byte_count = byte_count + 1; |
| } |
| } |
| while ((byte_count < message_size)); |
| |
| return (0); |
| } /* end msg_send_serial() */ |
| |
| /********************************************************** MSG_RECV_SERIAL |
| ** This function is used to receive a message over a |
| ** serial line. |
| ** |
| ** If the message is waiting in the buffer, a zero is |
| ** returned and the buffer pointed to by msg_ptr is filled |
| ** in. If no message was available, a -1 is returned. |
| ** If timeout==0, wait indefinetly for a character. |
| ** |
| */ |
| |
| int |
| msg_recv_serial (msg_ptr) |
| union msg_t *msg_ptr; |
| { |
| static INT32 length = 0; |
| static INT32 byte_count = 0; |
| int result; |
| char c; |
| if (msg_ptr == 0) /* re-sync request */ |
| { |
| length = 0; |
| byte_count = 0; |
| #ifdef HAVE_TERMIO |
| /* The timeout here is the prevailing timeout set with VTIME */ |
| ->"timeout==0 semantics not supported" |
| read (mm_desc, in_buf, BUFER_SIZE); |
| #else |
| alarm (1); |
| read (mm_desc, in_buf, BUFER_SIZE); |
| alarm (0); |
| #endif |
| return (0); |
| } |
| /* Receive message */ |
| #ifdef HAVE_TERMIO |
| /* Timeout==0, help support the mm_wait() routine */ |
| ->"timeout==0 semantics not supported (and its nice if they are)" |
| result = read (mm_desc, &c, 1); |
| #else |
| alarm (timeout); |
| result = read (mm_desc, &c, 1); |
| alarm (0); |
| #endif |
| if (result < 0) |
| { |
| if (errno == EINTR) |
| { |
| error ("Timeout reading from remote system."); |
| } |
| else |
| perror_with_name ("remote"); |
| } |
| else if (result == 1) |
| { |
| *((char *) msg_ptr + byte_count) = c; |
| byte_count = byte_count + 1; |
| } |
| |
| /* Message header received. Save message length. */ |
| if (byte_count == (2 * sizeof (INT32))) |
| length = msg_ptr->generic_msg.length; |
| |
| if (byte_count >= (length + (2 * sizeof (INT32)))) |
| { |
| /* Message received */ |
| byte_count = 0; |
| return (0); |
| } |
| else |
| return (-1); |
| |
| } /* end msg_recv_serial() */ |
| |
| /********************************************************************* KBD_RAW |
| ** This function is used to put the keyboard in "raw" |
| ** mode for BSD Unix. The original status is saved |
| ** so that it may be restored later. |
| */ |
| TERMINAL kbd_tbuf; |
| |
| int |
| kbd_raw () |
| { |
| int result; |
| TERMINAL tbuf; |
| |
| /* Get keyboard termio (to save to restore original modes) */ |
| #ifdef HAVE_TERMIO |
| result = ioctl (0, TCGETA, &kbd_tbuf); |
| #else |
| result = ioctl (0, TIOCGETP, &kbd_tbuf); |
| #endif |
| if (result == -1) |
| return (errno); |
| |
| /* Get keyboard TERMINAL (for modification) */ |
| #ifdef HAVE_TERMIO |
| result = ioctl (0, TCGETA, &tbuf); |
| #else |
| result = ioctl (0, TIOCGETP, &tbuf); |
| #endif |
| if (result == -1) |
| return (errno); |
| |
| /* Set up new parameters */ |
| #ifdef HAVE_TERMIO |
| tbuf.c_iflag = tbuf.c_iflag & |
| ~(INLCR | ICRNL | IUCLC | ISTRIP | IXON | BRKINT); |
| tbuf.c_lflag = tbuf.c_lflag & ~(ICANON | ISIG | ECHO); |
| tbuf.c_cc[4] = 0; /* MIN */ |
| tbuf.c_cc[5] = 0; /* TIME */ |
| #else |
| /* FIXME: not sure if this is correct (matches HAVE_TERMIO). */ |
| tbuf.sg_flags |= RAW; |
| tbuf.sg_flags |= ANYP; |
| tbuf.sg_flags &= ~ECHO; |
| #endif |
| |
| /* Set keyboard termio to new mode (RAW) */ |
| #ifdef HAVE_TERMIO |
| result = ioctl (0, TCSETAF, &tbuf); |
| #else |
| result = ioctl (0, TIOCSETP, &tbuf); |
| #endif |
| if (result == -1) |
| return (errno); |
| |
| return (0); |
| } /* end kbd_raw() */ |
| |
| |
| |
| /***************************************************************** KBD_RESTORE |
| ** This function is used to put the keyboard back in the |
| ** mode it was in before kbk_raw was called. Note that |
| ** kbk_raw() must have been called at least once before |
| ** kbd_restore() is called. |
| */ |
| |
| int |
| kbd_restore () |
| { |
| int result; |
| |
| /* Set keyboard termio to original mode */ |
| #ifdef HAVE_TERMIO |
| result = ioctl (0, TCSETAF, &kbd_tbuf); |
| #else |
| result = ioctl (0, TIOCGETP, &kbd_tbuf); |
| #endif |
| |
| if (result == -1) |
| return (errno); |
| |
| return (0); |
| } /* end kbd_cooked() */ |
| |
| |
| /*****************************************************************************/ |
| /* Fetch a single register indicatated by 'regno'. |
| * Returns 0/-1 on success/failure. |
| */ |
| static int |
| fetch_register (regno) |
| int regno; |
| { |
| int result; |
| out_msg_buf->read_req_msg.code = READ_REQ; |
| out_msg_buf->read_req_msg.length = 4 * 3; |
| out_msg_buf->read_req_msg.byte_count = 4; |
| |
| if (regno == GR1_REGNUM) |
| { |
| out_msg_buf->read_req_msg.memory_space = GLOBAL_REG; |
| out_msg_buf->read_req_msg.address = 1; |
| } |
| else if (regno >= GR96_REGNUM && regno < GR96_REGNUM + 32) |
| { |
| out_msg_buf->read_req_msg.memory_space = GLOBAL_REG; |
| out_msg_buf->read_req_msg.address = (regno - GR96_REGNUM) + 96; |
| } |
| #if defined(GR64_REGNUM) |
| else if (regno >= GR64_REGNUM && regno < GR64_REGNUM + 32) |
| { |
| out_msg_buf->read_req_msg.memory_space = GLOBAL_REG; |
| out_msg_buf->read_req_msg.address = (regno - GR64_REGNUM) + 64; |
| } |
| #endif /* GR64_REGNUM */ |
| else if (regno >= LR0_REGNUM && regno < LR0_REGNUM + 128) |
| { |
| out_msg_buf->read_req_msg.memory_space = LOCAL_REG; |
| out_msg_buf->read_req_msg.address = (regno - LR0_REGNUM); |
| } |
| else if (regno >= FPE_REGNUM && regno <= EXO_REGNUM) |
| { |
| int val = -1; |
| supply_register (160 + (regno - FPE_REGNUM), &val); |
| return 0; /* Pretend Success */ |
| } |
| else |
| { |
| out_msg_buf->read_req_msg.memory_space = SPECIAL_REG; |
| out_msg_buf->read_req_msg.address = regnum_to_srnum (regno); |
| } |
| |
| msg_send_serial (out_msg_buf); |
| |
| if (expect_msg (READ_ACK, in_msg_buf, 1)) |
| { |
| supply_register (regno, &(in_msg_buf->read_r_ack_msg.data[0])); |
| result = 0; |
| } |
| else |
| { |
| result = -1; |
| } |
| return result; |
| } |
| /*****************************************************************************/ |
| /* Store a single register indicated by 'regno'. |
| * Returns 0/-1 on success/failure. |
| */ |
| static int |
| store_register (regno) |
| int regno; |
| { |
| int result; |
| |
| out_msg_buf->write_req_msg.code = WRITE_REQ; |
| out_msg_buf->write_req_msg.length = 4 * 4; |
| out_msg_buf->write_req_msg.byte_count = 4; |
| out_msg_buf->write_r_msg.data[0] = read_register (regno); |
| |
| if (regno == GR1_REGNUM) |
| { |
| out_msg_buf->write_req_msg.memory_space = GLOBAL_REG; |
| out_msg_buf->write_req_msg.address = 1; |
| /* Setting GR1 changes the numbers of all the locals, so invalidate the |
| * register cache. Do this *after* calling read_register, because we want |
| * read_register to return the value that write_register has just stuffed |
| * into the registers array, not the value of the register fetched from |
| * the inferior. |
| */ |
| registers_changed (); |
| } |
| #if defined(GR64_REGNUM) |
| else if (regno >= GR64_REGNUM && regno < GR64_REGNUM + 32) |
| { |
| out_msg_buf->write_req_msg.memory_space = GLOBAL_REG; |
| out_msg_buf->write_req_msg.address = (regno - GR64_REGNUM) + 64; |
| } |
| #endif /* GR64_REGNUM */ |
| else if (regno >= GR96_REGNUM && regno < GR96_REGNUM + 32) |
| { |
| out_msg_buf->write_req_msg.memory_space = GLOBAL_REG; |
| out_msg_buf->write_req_msg.address = (regno - GR96_REGNUM) + 96; |
| } |
| else if (regno >= LR0_REGNUM && regno < LR0_REGNUM + 128) |
| { |
| out_msg_buf->write_req_msg.memory_space = LOCAL_REG; |
| out_msg_buf->write_req_msg.address = (regno - LR0_REGNUM); |
| } |
| else if (regno >= FPE_REGNUM && regno <= EXO_REGNUM) |
| { |
| return 0; /* Pretend Success */ |
| } |
| else |
| /* An unprotected or protected special register */ |
| { |
| out_msg_buf->write_req_msg.memory_space = SPECIAL_REG; |
| out_msg_buf->write_req_msg.address = regnum_to_srnum (regno); |
| } |
| |
| msg_send_serial (out_msg_buf); |
| |
| if (expect_msg (WRITE_ACK, in_msg_buf, 1)) |
| { |
| result = 0; |
| } |
| else |
| { |
| result = -1; |
| } |
| return result; |
| } |
| /****************************************************************************/ |
| /* |
| * Convert a gdb special register number to a 29000 special register number. |
| */ |
| static int |
| regnum_to_srnum (regno) |
| int regno; |
| { |
| switch (regno) |
| { |
| case VAB_REGNUM: |
| return (0); |
| case OPS_REGNUM: |
| return (1); |
| case CPS_REGNUM: |
| return (2); |
| case CFG_REGNUM: |
| return (3); |
| case CHA_REGNUM: |
| return (4); |
| case CHD_REGNUM: |
| return (5); |
| case CHC_REGNUM: |
| return (6); |
| case RBP_REGNUM: |
| return (7); |
| case TMC_REGNUM: |
| return (8); |
| case TMR_REGNUM: |
| return (9); |
| case NPC_REGNUM: |
| return (USE_SHADOW_PC ? (20) : (10)); |
| case PC_REGNUM: |
| return (USE_SHADOW_PC ? (21) : (11)); |
| case PC2_REGNUM: |
| return (USE_SHADOW_PC ? (22) : (12)); |
| case MMU_REGNUM: |
| return (13); |
| case LRU_REGNUM: |
| return (14); |
| case IPC_REGNUM: |
| return (128); |
| case IPA_REGNUM: |
| return (129); |
| case IPB_REGNUM: |
| return (130); |
| case Q_REGNUM: |
| return (131); |
| case ALU_REGNUM: |
| return (132); |
| case BP_REGNUM: |
| return (133); |
| case FC_REGNUM: |
| return (134); |
| case CR_REGNUM: |
| return (135); |
| case FPE_REGNUM: |
| return (160); |
| case INTE_REGNUM: |
| return (161); |
| case FPS_REGNUM: |
| return (162); |
| case EXO_REGNUM: |
| return (164); |
| default: |
| return (255); /* Failure ? */ |
| } |
| } |
| /****************************************************************************/ |
| /* |
| * Initialize the target debugger (minimon only). |
| */ |
| static void |
| init_target_mm (tstart, tend, dstart, dend, entry, ms_size, rs_size, arg_start) |
| ADDR32 tstart, tend, dstart, dend, entry; |
| INT32 ms_size, rs_size; |
| ADDR32 arg_start; |
| { |
| out_msg_buf->init_msg.code = INIT; |
| out_msg_buf->init_msg.length = sizeof (struct init_msg_t) - 2 * sizeof (INT32); |
| out_msg_buf->init_msg.text_start = tstart; |
| out_msg_buf->init_msg.text_end = tend; |
| out_msg_buf->init_msg.data_start = dstart; |
| out_msg_buf->init_msg.data_end = dend; |
| out_msg_buf->init_msg.entry_point = entry; |
| out_msg_buf->init_msg.mem_stack_size = ms_size; |
| out_msg_buf->init_msg.reg_stack_size = rs_size; |
| out_msg_buf->init_msg.arg_start = arg_start; |
| msg_send_serial (out_msg_buf); |
| expect_msg (INIT_ACK, in_msg_buf, 1); |
| } |
| /****************************************************************************/ |
| /* |
| * Return a pointer to a string representing the given message code. |
| * Not all messages are represented here, only the ones that we expect |
| * to be called with. |
| */ |
| static char * |
| msg_str (code) |
| INT32 code; |
| { |
| static char cbuf[32]; |
| |
| switch (code) |
| { |
| case BKPT_SET_ACK: |
| sprintf (cbuf, "%s (%d)", "BKPT_SET_ACK", code); |
| break; |
| case BKPT_RM_ACK: |
| sprintf (cbuf, "%s (%d)", "BKPT_RM_ACK", code); |
| break; |
| case INIT_ACK: |
| sprintf (cbuf, "%s (%d)", "INIT_ACK", code); |
| break; |
| case READ_ACK: |
| sprintf (cbuf, "%s (%d)", "READ_ACK", code); |
| break; |
| case WRITE_ACK: |
| sprintf (cbuf, "%s (%d)", "WRITE_ACK", code); |
| break; |
| case ERROR: |
| sprintf (cbuf, "%s (%d)", "ERROR", code); |
| break; |
| case HALT: |
| sprintf (cbuf, "%s (%d)", "HALT", code); |
| break; |
| default: |
| sprintf (cbuf, "UNKNOWN (%d)", code); |
| break; |
| } |
| return (cbuf); |
| } |
| /****************************************************************************/ |
| /* |
| * Selected (not all of them) error codes that we might get. |
| */ |
| static char * |
| error_msg_str (code) |
| INT32 code; |
| { |
| static char cbuf[50]; |
| |
| switch (code) |
| { |
| case EMFAIL: |
| return ("EMFAIL: unrecoverable error"); |
| case EMBADADDR: |
| return ("EMBADADDR: Illegal address"); |
| case EMBADREG: |
| return ("EMBADREG: Illegal register "); |
| case EMACCESS: |
| return ("EMACCESS: Could not access memory"); |
| case EMBADMSG: |
| return ("EMBADMSG: Unknown message type"); |
| case EMMSG2BIG: |
| return ("EMMSG2BIG: Message to large"); |
| case EMNOSEND: |
| return ("EMNOSEND: Could not send message"); |
| case EMNORECV: |
| return ("EMNORECV: Could not recv message"); |
| case EMRESET: |
| return ("EMRESET: Could not RESET target"); |
| case EMCONFIG: |
| return ("EMCONFIG: Could not get target CONFIG"); |
| case EMSTATUS: |
| return ("EMSTATUS: Could not get target STATUS"); |
| case EMREAD: |
| return ("EMREAD: Could not READ target memory"); |
| case EMWRITE: |
| return ("EMWRITE: Could not WRITE target memory"); |
| case EMBKPTSET: |
| return ("EMBKPTSET: Could not set breakpoint"); |
| case EMBKPTRM: |
| return ("EMBKPTRM: Could not remove breakpoint"); |
| case EMBKPTSTAT: |
| return ("EMBKPTSTAT: Could not get breakpoint status"); |
| case EMBKPTNONE: |
| return ("EMBKPTNONE: All breakpoints in use"); |
| case EMBKPTUSED: |
| return ("EMBKPTUSED: Breakpoints already in use"); |
| case EMINIT: |
| return ("EMINIT: Could not init target memory"); |
| case EMGO: |
| return ("EMGO: Could not start execution"); |
| case EMSTEP: |
| return ("EMSTEP: Could not single step"); |
| case EMBREAK: |
| return ("EMBREAK: Could not BREAK"); |
| case EMCOMMERR: |
| return ("EMCOMMERR: Communication error"); |
| default: |
| sprintf (cbuf, "error number %d", code); |
| break; |
| } /* end switch */ |
| |
| return (cbuf); |
| } |
| /****************************************************************************/ |
| /* |
| * Receive a message and expect it to be of type msgcode. |
| * Returns 0/1 on failure/success. |
| */ |
| static int |
| expect_msg (msgcode, msg_buf, from_tty) |
| INT32 msgcode; /* Msg code we expect */ |
| union msg_t *msg_buf; /* Where to put the message received */ |
| int from_tty; /* Print message on error if non-zero */ |
| { |
| int retries = 0; |
| while (msg_recv_serial (msg_buf) && (retries++ < MAX_RETRIES)); |
| if (retries >= MAX_RETRIES) |
| { |
| printf ("Expected msg %s, ", msg_str (msgcode)); |
| printf ("no message received!\n"); |
| return (0); /* Failure */ |
| } |
| |
| if (msg_buf->generic_msg.code != msgcode) |
| { |
| if (from_tty) |
| { |
| printf ("Expected msg %s, ", msg_str (msgcode)); |
| printf ("got msg %s\n", msg_str (msg_buf->generic_msg.code)); |
| if (msg_buf->generic_msg.code == ERROR) |
| printf ("%s\n", error_msg_str (msg_buf->error_msg.error_code)); |
| } |
| return (0); /* Failure */ |
| } |
| return (1); /* Success */ |
| } |
| /****************************************************************************/ |
| /* |
| * Determine the MiniMon memory space qualifier based on the addr. |
| * FIXME: Can't distinguis I_ROM/D_ROM. |
| * FIXME: Doesn't know anything about I_CACHE/D_CACHE. |
| */ |
| static int |
| mm_memory_space (addr) |
| CORE_ADDR *addr; |
| { |
| ADDR32 tstart = target_config.I_mem_start; |
| ADDR32 tend = tstart + target_config.I_mem_size; |
| ADDR32 dstart = target_config.D_mem_start; |
| ADDR32 dend = tstart + target_config.D_mem_size; |
| ADDR32 rstart = target_config.ROM_start; |
| ADDR32 rend = tstart + target_config.ROM_size; |
| |
| if (((ADDR32) addr >= tstart) && ((ADDR32) addr < tend)) |
| { |
| return I_MEM; |
| } |
| else if (((ADDR32) addr >= dstart) && ((ADDR32) addr < dend)) |
| { |
| return D_MEM; |
| } |
| else if (((ADDR32) addr >= rstart) && ((ADDR32) addr < rend)) |
| { |
| /* FIXME: how do we determine between D_ROM and I_ROM */ |
| return D_ROM; |
| } |
| else /* FIXME: what do me do now? */ |
| return D_MEM; /* Hmmm! */ |
| } |
| |
| /****************************************************************************/ |
| /* |
| * Define the target subroutine names |
| */ |
| struct target_ops mm_ops; |
| |
| static void |
| init_mm_ops (void) |
| { |
| mm_ops.to_shortname = "minimon"; |
| mm_ops.to_longname = "Remote AMD/Minimon target"; |
| mm_ops.to_doc = "Remote debug an AMD 290*0 using the MiniMon dbg core on the target"; |
| mm_ops.to_open = mm_open; |
| mm_ops.to_close = mm_close; |
| mm_ops.to_attach = mm_attach; |
| mm_ops.to_post_attach = NULL; |
| mm_ops.to_require_attach = NULL; |
| mm_ops.to_detach = mm_detach; |
| mm_ops.to_require_detach = NULL; |
| mm_ops.to_resume = mm_resume; |
| mm_ops.to_wait = mm_wait; |
| mm_ops.to_post_wait = NULL; |
| mm_ops.to_fetch_registers = mm_fetch_registers; |
| mm_ops.to_store_registers = mm_store_registers; |
| mm_ops.to_prepare_to_store = mm_prepare_to_store; |
| mm_ops.to_xfer_memory = mm_xfer_inferior_memory; |
| mm_ops.to_files_info = mm_files_info; |
| mm_ops.to_insert_breakpoint = mm_insert_breakpoint; |
| mm_ops.to_remove_breakpoint = mm_remove_breakpoint; |
| mm_ops.to_terminal_init = 0; |
| mm_ops.to_terminal_inferior = 0; |
| mm_ops.to_terminal_ours_for_output = 0; |
| mm_ops.to_terminal_ours = 0; |
| mm_ops.to_terminal_info = 0; |
| mm_ops.to_kill = mm_kill; |
| mm_ops.to_load = mm_load; |
| mm_ops.to_lookup_symbol = 0; |
| mm_ops.to_create_inferior = mm_create_inferior; |
| mm_ops.to_post_startup_inferior = NULL; |
| mm_ops.to_acknowledge_created_inferior = NULL; |
| mm_ops.to_clone_and_follow_inferior = NULL; |
| mm_ops.to_post_follow_inferior_by_clone = NULL; |
| mm_ops.to_insert_fork_catchpoint = NULL; |
| mm_ops.to_remove_fork_catchpoint = NULL; |
| mm_ops.to_insert_vfork_catchpoint = NULL; |
| mm_ops.to_remove_vfork_catchpoint = NULL; |
| mm_ops.to_has_forked = NULL; |
| mm_ops.to_has_vforked = NULL; |
| mm_ops.to_can_follow_vfork_prior_to_exec = NULL; |
| mm_ops.to_post_follow_vfork = NULL; |
| mm_ops.to_insert_exec_catchpoint = NULL; |
| mm_ops.to_remove_exec_catchpoint = NULL; |
| mm_ops.to_has_execd = NULL; |
| mm_ops.to_reported_exec_events_per_exec_call = NULL; |
| mm_ops.to_has_exited = NULL; |
| mm_ops.to_mourn_inferior = mm_mourn; |
| mm_ops.to_can_run = 0; |
| mm_ops.to_notice_signals = 0; |
| mm_ops.to_thread_alive = 0; |
| mm_ops.to_stop = 0; |
| mm_ops.to_pid_to_exec_file = NULL; |
| mm_ops.to_core_file_to_sym_file = NULL; |
| mm_ops.to_stratum = process_stratum; |
| mm_ops.DONT_USE = 0; |
| mm_ops.to_has_all_memory = 1; |
| mm_ops.to_has_memory = 1; |
| mm_ops.to_has_stack = 1; |
| mm_ops.to_has_registers = 1; |
| mm_ops.to_has_execution = 1; |
| mm_ops.to_sections = 0; |
| mm_ops.to_sections_end = 0; |
| mm_ops.to_magic = OPS_MAGIC; |
| }; |
| |
| void |
| _initialize_remote_mm () |
| { |
| init_mm_ops (); |
| add_target (&mm_ops); |
| } |
| |
| #ifdef NO_HIF_SUPPORT |
| service_HIF (msg) |
| union msg_t *msg; |
| { |
| return (0); /* Emulate a failure */ |
| } |
| #endif |