| /* Memory-access and commands for remote es1800 processes, for GDB. |
| |
| Copyright 1988, 1992, 1993, 1994, 1995, 1996, 1998, 1999, 2000, |
| 2001, 2002 Free Software Foundation, Inc. |
| |
| This file is added to GDB to make it possible to do debugging via an |
| ES-1800 emulator. The code was originally written by Johan Holmberg |
| TT/SJ Ericsson Telecom AB and later modified by Johan Henriksson |
| TT/SJ. It was modified for gdb 4.0 by TX/DK Jan Nordenand by TX/DKG |
| Harald Johansen. |
| |
| This file is part of GDB. |
| |
| GDB 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 1, or (at your option) |
| any later version. |
| |
| GDB 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. */ |
| |
| |
| /* Emulator communication protocol. |
| All values are encoded in ascii hex digits. |
| |
| Request |
| Command |
| Reply |
| read registers: |
| DR<cr> |
| - 0 - - 1 - - 2 - - 3 - - 4 - - 5 - -- 6 - - 7 - |
| D = XXXXXXXX XXXXXXXX XXXXXXXX XXXXXXXX XXXXXXXX XXXXXXXX XXXXXXXX XXXXXXXX |
| A = XXXXXXXX XXXXXXXX XXXXXXXX XXXXXXXX XXXXXXXX XXXXXXXX XXXXXXXX |
| PC = XXXXXX SSP = XXXXXX USP = XXXXXX SR = XXXXXXXX |
| > |
| Each byte of register data is described by two hex digits. |
| |
| write regs |
| D0=XXXXXXXX<cr> |
| >D1=XXXXXXXX<cr> |
| >D2=XXXXXXXX<cr> |
| >D3=XXXXXXXX<cr> |
| >D4=XXXXXXXX<cr> |
| >D5=XXXXXXXX<cr> |
| >D6=XXXXXXXX<cr> |
| >D7=XXXXXXXX<cr> |
| >A0=XXXXXXXX<cr> |
| >A1=XXXXXXXX<cr> |
| >A2=XXXXXXXX<cr> |
| >A3=XXXXXXXX<cr> |
| >A4=XXXXXXXX<cr> |
| >A5=XXXXXXXX<cr> |
| >A6=XXXXXXXX<cr> |
| >A7=XXXXXXXX<cr> |
| >SR=XXXXXXXX<cr> |
| >PC=XXXXXX<cr> |
| > |
| Each byte of register data is described by two hex digits. |
| |
| read mem |
| @.BAA..AA |
| $FFFFFFXX |
| > |
| AA..AA is address, XXXXXXX is the contents |
| |
| write mem |
| @.BAA..AA=$XXXXXXXX |
| > |
| AA..AA is address, XXXXXXXX is data |
| |
| cont |
| PC=$AA..AA |
| >RBK |
| R> |
| AA..AA is address to resume. If AA..AA is omitted, resume at same address. |
| |
| step |
| PC=$AA..AA |
| >STP |
| R> |
| AA..AA is address to resume. If AA..AA is omitted, resume at same address. |
| |
| kill req |
| STP |
| > |
| */ |
| |
| |
| #include <stdio.h> |
| #include <signal.h> |
| #include <sys/ioctl.h> |
| #include <sys/file.h> |
| #include <errno.h> |
| #include <ctype.h> |
| #include <setjmp.h> |
| #include <fcntl.h> |
| #include "defs.h" |
| #include "gdb_string.h" |
| #include "frame.h" |
| #include "inferior.h" |
| #include "target.h" |
| #include "command.h" |
| #include "symfile.h" |
| #include "remote-utils.h" |
| #include "gdbcore.h" |
| #include "serial.h" |
| #include "regcache.h" |
| #include "value.h" |
| |
| /* Prototypes for local functions */ |
| |
| static void es1800_child_detach (char *, int); |
| |
| static void es1800_child_open (char *, int); |
| |
| static void es1800_transparent (char *, int); |
| |
| static void es1800_create_inferior (char *, char *, char **); |
| |
| static void es1800_load (char *, int); |
| |
| static void es1800_kill (void); |
| |
| static int verify_break (int); |
| |
| static int es1800_remove_breakpoint (CORE_ADDR, char *); |
| |
| static int es1800_insert_breakpoint (CORE_ADDR, char *); |
| |
| static void es1800_files_info (struct target_ops *); |
| |
| static int es1800_xfer_inferior_memory (CORE_ADDR, char *, int, int, |
| struct mem_attrib *, |
| struct target_ops *); |
| |
| static void es1800_prepare_to_store (void); |
| |
| static ptid_t es1800_wait (ptid_t, struct target_waitstatus *); |
| |
| static void es1800_resume (ptid_t, int, enum target_signal); |
| |
| static void es1800_detach (char *, int); |
| |
| static void es1800_attach (char *, int); |
| |
| static int damn_b (char *); |
| |
| static void es1800_open (char *, int); |
| |
| static void es1800_timer (void); |
| |
| static void es1800_reset (char *); |
| |
| static void es1800_request_quit (void); |
| |
| static int readchar (void); |
| |
| static void expect (char *, int); |
| |
| static void expect_prompt (void); |
| |
| static void download (FILE *, int, int); |
| |
| #if 0 |
| static void bfd_copy (bfd *, bfd *); |
| #endif |
| |
| static void get_break_addr (int, CORE_ADDR *); |
| |
| static int fromhex (int); |
| |
| static int tohex (int); |
| |
| static void es1800_close (int); |
| |
| static void es1800_fetch_registers (void); |
| |
| static void es1800_fetch_register (int); |
| |
| static void es1800_store_register (int); |
| |
| static void es1800_read_bytes (CORE_ADDR, char *, int); |
| |
| static void es1800_write_bytes (CORE_ADDR, char *, int); |
| |
| static void send_with_reply (char *, char *, int); |
| |
| static void send_command (char *); |
| |
| static void send (char *); |
| |
| static void getmessage (char *, int); |
| |
| static void es1800_mourn_inferior (void); |
| |
| static void es1800_create_break_insn (char *, int); |
| |
| static void es1800_init_break (char *, int); |
| |
| /* Local variables */ |
| |
| /* FIXME: Convert this to use "set remotedebug" instead. */ |
| #define LOG_FILE "es1800.log" |
| #if defined (LOG_FILE) |
| static FILE *log_file; |
| #endif |
| |
| extern struct target_ops es1800_ops; /* Forward decl */ |
| extern struct target_ops es1800_child_ops; /* Forward decl */ |
| |
| static int kiodebug; |
| static int timeout = 100; |
| static char *savename; /* Name of i/o device used */ |
| static serial_ttystate es1800_saved_ttystate; |
| static int es1800_fc_save; /* Save fcntl state */ |
| |
| /* indicates that the emulator uses 32-bit data-adress (68020-mode) |
| instead of 24-bit (68000 -mode) */ |
| |
| static int m68020; |
| |
| #define MODE (m68020 ? "M68020" : "M68000" ) |
| #define ES1800_BREAK_VEC (0xf) |
| |
| /* Descriptor for I/O to remote machine. Initialize it to NULL so that |
| es1800_open knows that we don't have a file open when the program |
| starts. */ |
| |
| static struct serial *es1800_desc = NULL; |
| |
| #define PBUFSIZ 1000 |
| #define HDRLEN sizeof("@.BAAAAAAAA=$VV\r") |
| |
| /* Maximum number of bytes to read/write at once. The value here |
| is chosen to fill up a packet. */ |
| |
| #define MAXBUFBYTES ((PBUFSIZ-150)*16/75 ) |
| |
| static int es1800_break_vec = 0; |
| static char es1800_break_insn[2]; |
| static long es1800_break_address; |
| static void (*old_sigint) (); /* Old signal-handler for sigint */ |
| static jmp_buf interrupt; |
| |
| /* Local signalhandler to allow breaking tranfers or program run. |
| Rely on global variables: old_sigint(), interrupt */ |
| |
| static void |
| es1800_request_quit (void) |
| { |
| /* restore original signalhandler */ |
| signal (SIGINT, old_sigint); |
| longjmp (interrupt, 1); |
| } |
| |
| |
| /* Reset emulator. |
| Sending reset character(octal 32) to emulator. |
| quit - return to '(esgdb)' prompt or continue */ |
| |
| static void |
| es1800_reset (char *quit) |
| { |
| char buf[80]; |
| |
| if (quit) |
| { |
| printf ("\nResetting emulator... "); |
| } |
| strcpy (buf, "\032"); |
| send (buf); |
| expect_prompt (); |
| if (quit) |
| { |
| error ("done\n"); |
| } |
| } |
| |
| |
| /* Open a connection to a remote debugger and push the new target |
| onto the stack. Check if the emulator is responding and find out |
| what kind of processor the emulator is connected to. |
| Initiate the breakpoint handling in the emulator. |
| |
| name - the filename used for communication (ex. '/dev/tta') |
| from_tty - says whether to be verbose or not */ |
| |
| static void |
| es1800_open (char *name, int from_tty) |
| { |
| char buf[PBUFSIZ]; |
| char *p; |
| int i, fcflag; |
| |
| m68020 = 0; |
| |
| if (!name) /* no device name given in target command */ |
| { |
| error_no_arg ("serial port device name"); |
| } |
| |
| target_preopen (from_tty); |
| es1800_close (0); |
| |
| /* open the device and configure it for communication */ |
| |
| #ifndef DEBUG_STDIN |
| |
| es1800_desc = serial_open (name); |
| if (es1800_desc == NULL) |
| { |
| perror_with_name (name); |
| } |
| savename = savestring (name, strlen (name)); |
| |
| es1800_saved_ttystate = serial_get_tty_state (es1800_desc); |
| |
| if ((fcflag = fcntl (deprecated_serial_fd (es1800_desc), F_GETFL, 0)) == -1) |
| { |
| perror_with_name ("fcntl serial"); |
| } |
| es1800_fc_save = fcflag; |
| |
| fcflag = (fcflag & (FREAD | FWRITE)); /* mask out any funny stuff */ |
| if (fcntl (deprecated_serial_fd (es1800_desc), F_SETFL, fcflag) == -1) |
| { |
| perror_with_name ("fcntl serial"); |
| } |
| |
| if (baud_rate != -1) |
| { |
| if (serial_setbaudrate (es1800_desc, baud_rate)) |
| { |
| serial_close (es1800_desc); |
| perror_with_name (name); |
| } |
| } |
| |
| serial_raw (es1800_desc); |
| |
| /* If there is something sitting in the buffer we might take it as a |
| response to a command, which would be bad. */ |
| serial_flush_input (es1800_desc); |
| |
| #endif /* DEBUG_STDIN */ |
| |
| push_target (&es1800_ops); /* Switch to using remote target now */ |
| if (from_tty) |
| { |
| printf ("Remote ES1800 debugging using %s\n", name); |
| } |
| |
| #if defined (LOG_FILE) |
| |
| log_file = fopen (LOG_FILE, "w"); |
| if (log_file == NULL) |
| { |
| perror_with_name (LOG_FILE); |
| } |
| |
| #endif /* LOG_FILE */ |
| |
| /* Hello? Are you there?, also check mode */ |
| |
| /* send_with_reply( "DB 0 TO 1", buf, sizeof(buf)); */ |
| /* for (p = buf, i = 0; *p++ =='0';) *//* count the number of zeros */ |
| /* i++; */ |
| |
| send ("\032"); |
| getmessage (buf, sizeof (buf)); /* send reset character */ |
| |
| if (from_tty) |
| { |
| printf ("Checking mode.... "); |
| } |
| /* m68020 = (i==8); *//* if eight zeros then we are in m68020 mode */ |
| |
| /* What kind of processor am i talking to ? */ |
| p = buf; |
| while (*p++ != '\n') |
| {; |
| } |
| while (*p++ != '\n') |
| {; |
| } |
| while (*p++ != '\n') |
| {; |
| } |
| for (i = 0; i < 20; i++, p++) |
| {; |
| } |
| m68020 = !strncmp (p, "68020", 5); |
| if (from_tty) |
| { |
| printf ("You are in %s(%c%c%c%c%c)-mode\n", MODE, p[0], p[1], p[2], |
| p[3], p[4]); |
| } |
| |
| /* if no init_break statement is present in .gdb file we have to check |
| whether to download a breakpoint routine or not */ |
| |
| #if 0 |
| if ((es1800_break_vec == 0) || (verify_break (es1800_break_vec) != 0) |
| && query ("No breakpoint routine in ES 1800 emulator!\nDownload a breakpoint routine to the emulator? ")) |
| { |
| CORE_ADDR memaddress; |
| printf ("Give the start address of the breakpoint routine: "); |
| scanf ("%li", &memaddress); |
| es1800_init_break ((es1800_break_vec ? es1800_break_vec : |
| ES1800_BREAK_VEC), memaddress); |
| } |
| #endif |
| |
| } |
| |
| /* Close out all files and local state before this target loses control. |
| quitting - are we quitting gdb now? */ |
| |
| static void |
| es1800_close (int quitting) |
| { |
| if (es1800_desc != NULL) |
| { |
| printf ("\nClosing connection to emulator...\n"); |
| if (serial_set_tty_state (es1800_desc, es1800_saved_ttystate) < 0) |
| print_sys_errmsg ("warning: unable to restore tty state", errno); |
| fcntl (deprecated_serial_fd (es1800_desc), F_SETFL, es1800_fc_save); |
| serial_close (es1800_desc); |
| es1800_desc = NULL; |
| } |
| if (savename != NULL) |
| { |
| xfree (savename); |
| } |
| savename = NULL; |
| |
| #if defined (LOG_FILE) |
| |
| if (log_file != NULL) |
| { |
| if (ferror (log_file)) |
| { |
| printf ("Error writing log file.\n"); |
| } |
| if (fclose (log_file) != 0) |
| { |
| printf ("Error closing log file.\n"); |
| } |
| log_file = NULL; |
| } |
| |
| #endif /* LOG_FILE */ |
| |
| } |
| |
| /* Attaches to a process on the target side |
| proc_id - the id of the process to be attached. |
| from_tty - says whether to be verbose or not */ |
| |
| static void |
| es1800_attach (char *args, int from_tty) |
| { |
| error ("Cannot attach to pid %s, this feature is not implemented yet.", |
| args); |
| } |
| |
| |
| /* Takes a program previously attached to and detaches it. |
| We better not have left any breakpoints |
| in the program or it'll die when it hits one. |
| Close the open connection to the remote debugger. |
| Use this when you want to detach and do something else |
| with your gdb. |
| |
| args - arguments given to the 'detach' command |
| from_tty - says whether to be verbose or not */ |
| |
| static void |
| es1800_detach (char *args, int from_tty) |
| { |
| if (args) |
| { |
| error ("Argument given to \"detach\" when remotely debugging."); |
| } |
| pop_target (); |
| if (from_tty) |
| { |
| printf ("Ending es1800 remote debugging.\n"); |
| } |
| } |
| |
| |
| /* Tell the remote machine to resume. |
| step - single-step or run free |
| siggnal - the signal value to be given to the target (0 = no signal) */ |
| |
| static void |
| es1800_resume (ptid_t ptid, int step, enum target_signal siggnal) |
| { |
| char buf[PBUFSIZ]; |
| |
| if (siggnal) |
| { |
| error ("Can't send signals to a remote system."); |
| } |
| if (step) |
| { |
| strcpy (buf, "STP\r"); |
| send (buf); |
| } |
| else |
| { |
| send_command ("RBK"); |
| } |
| } |
| |
| /* Wait until the remote machine stops, then return, |
| storing status in STATUS just as `wait' would. |
| status - */ |
| |
| static ptid_t |
| es1800_wait (ptid_t ptid, struct target_waitstatus *status) |
| { |
| unsigned char buf[PBUFSIZ]; |
| int old_timeout = timeout; |
| |
| status->kind = TARGET_WAITKIND_EXITED; |
| status->value.integer = 0; |
| |
| timeout = 0; /* Don't time out -- user program is running. */ |
| if (!setjmp (interrupt)) |
| { |
| old_sigint = signal (SIGINT, es1800_request_quit); |
| while (1) |
| { |
| getmessage (buf, sizeof (buf)); |
| if (strncmp (buf, "\r\n* BREAK *", 11) == 0) |
| { |
| status->kind = TARGET_WAITKIND_STOPPED; |
| status->value.sig = TARGET_SIGNAL_TRAP; |
| send_command ("STP"); /* Restore stack and PC and such */ |
| if (m68020) |
| { |
| send_command ("STP"); |
| } |
| break; |
| } |
| if (strncmp (buf, "STP\r\n ", 6) == 0) |
| { |
| status->kind = TARGET_WAITKIND_STOPPED; |
| status->value.sig = TARGET_SIGNAL_TRAP; |
| break; |
| } |
| if (buf[strlen (buf) - 2] == 'R') |
| { |
| printf ("Unexpected emulator reply: \n%s\n", buf); |
| } |
| else |
| { |
| printf ("Unexpected stop: \n%s\n", buf); |
| status->kind = TARGET_WAITKIND_STOPPED; |
| status->value.sig = TARGET_SIGNAL_QUIT; |
| break; |
| } |
| } |
| } |
| else |
| { |
| fflush (stdin); |
| printf ("\nStopping emulator..."); |
| if (!setjmp (interrupt)) |
| { |
| old_sigint = signal (SIGINT, es1800_request_quit); |
| send_command ("STP"); |
| printf (" emulator stopped\n"); |
| status->kind = TARGET_WAITKIND_STOPPED; |
| status->value.sig = TARGET_SIGNAL_INT; |
| } |
| else |
| { |
| fflush (stdin); |
| es1800_reset ((char *) 1); |
| } |
| } |
| signal (SIGINT, old_sigint); |
| timeout = old_timeout; |
| return inferior_ptid; |
| } |
| |
| |
| /* Fetch register values from remote machine. |
| regno - the register to be fetched (fetch all registers if -1) */ |
| |
| static void |
| es1800_fetch_register (int regno) |
| { |
| char buf[PBUFSIZ]; |
| int k; |
| int r; |
| char *p; |
| static char regtab[18][4] = |
| { |
| "D0 ", "D1 ", "D2 ", "D3 ", "D4 ", "D5 ", "D6 ", "D7 ", |
| "A0 ", "A1 ", "A2 ", "A3 ", "A4 ", "A5 ", "A6 ", "SSP", |
| "SR ", "PC " |
| }; |
| |
| if ((regno < 15) || (regno == 16) || (regno == 17)) |
| { |
| r = regno * 4; |
| send_with_reply (regtab[regno], buf, sizeof (buf)); |
| p = buf; |
| for (k = 0; k < 4; k++) |
| { |
| if ((p[k * 2 + 1] == 0) || (p[k * 2 + 2] == 0)) |
| { |
| error ("Emulator reply is too short: %s", buf); |
| } |
| deprecated_registers[r++] = (fromhex (p[k * 2 + 1]) * 16) + fromhex (p[k * 2 + 2]); |
| } |
| } |
| else |
| { |
| es1800_fetch_registers (); |
| } |
| } |
| |
| /* Read the remote registers into REGISTERS. |
| Always fetches all registers. */ |
| |
| static void |
| es1800_fetch_registers (void) |
| { |
| char buf[PBUFSIZ]; |
| char SR_buf[PBUFSIZ]; |
| int i; |
| int k; |
| int r; |
| char *p; |
| |
| send_with_reply ("DR", buf, sizeof (buf)); |
| |
| /* Reply is edited to a string that describes registers byte by byte, |
| each byte encoded as two hex characters. */ |
| |
| p = buf; |
| r = 0; |
| |
| /* parsing row one - D0-D7-registers */ |
| |
| while (*p++ != '\n') |
| {; |
| } |
| for (i = 4; i < 70; i += (i == 39 ? 3 : 1)) |
| { |
| for (k = 0; k < 4; k++) |
| { |
| if (p[i + 0] == 0 || p[i + 1] == 0) |
| { |
| error ("Emulator reply is too short: %s", buf); |
| } |
| deprecated_registers[r++] = (fromhex (p[i + 0]) * 16) + fromhex (p[i + 1]); |
| i += 2; |
| } |
| } |
| p += i; |
| |
| /* parsing row two - A0-A6-registers */ |
| |
| while (*p++ != '\n') |
| {; |
| } |
| for (i = 4; i < 61; i += (i == 39 ? 3 : 1)) |
| { |
| for (k = 0; k < 4; k++) |
| { |
| if (p[i + 0] == 0 || p[i + 1] == 0) |
| { |
| error ("Emulator reply is too short: %s", buf); |
| } |
| deprecated_registers[r++] = (fromhex (p[i + 0])) * 16 + fromhex (p[i + 1]); |
| i += 2; |
| } |
| } |
| p += i; |
| |
| while (*p++ != '\n') |
| {; |
| } |
| |
| /* fetch SSP-, SR- and PC-registers */ |
| |
| /* first - check STATUS-word and decide which stackpointer to use */ |
| |
| send_with_reply ("SR", SR_buf, sizeof (SR_buf)); |
| p = SR_buf; |
| p += 5; |
| |
| if (m68020) |
| { |
| if (*p == '3') /* use masterstackpointer MSP */ |
| { |
| send_with_reply ("MSP", buf, sizeof (buf)); |
| } |
| else if (*p == '2') /* use interruptstackpointer ISP */ |
| { |
| send_with_reply ("ISP", buf, sizeof (buf)); |
| } |
| else |
| /* use userstackpointer USP */ |
| { |
| send_with_reply ("USP", buf, sizeof (buf)); |
| } |
| p = buf; |
| for (k = 0; k < 4; k++) |
| { |
| if (p[k * 2 + 1] == 0 || p[k * 2 + 2] == 0) |
| { |
| error ("Emulator reply is too short: %s", buf); |
| } |
| deprecated_registers[r++] = fromhex (buf[k * 2 + 1]) * 16 + fromhex (buf[k * 2 + 2]); |
| } |
| |
| p = SR_buf; |
| for (k = 0; k < 4; k++) |
| { |
| if (p[k * 2 + 1] == 0 || p[k * 2 + 2] == 0) |
| { |
| error ("Emulator reply is too short: %s", buf); |
| } |
| deprecated_registers[r++] = |
| fromhex (SR_buf[k * 2 + 1]) * 16 + fromhex (SR_buf[k * 2 + 2]); |
| } |
| send_with_reply ("PC", buf, sizeof (buf)); |
| p = buf; |
| for (k = 0; k < 4; k++) |
| { |
| if (p[k * 2 + 1] == 0 || p[k * 2 + 2] == 0) |
| { |
| error ("Emulator reply is too short: %s", buf); |
| } |
| deprecated_registers[r++] = fromhex (buf[k * 2 + 1]) * 16 + fromhex (buf[k * 2 + 2]); |
| } |
| } |
| else |
| /* 68000-mode */ |
| { |
| if (*p == '2') /* use supervisorstackpointer SSP */ |
| { |
| send_with_reply ("SSP", buf, sizeof (buf)); |
| } |
| else |
| /* use userstackpointer USP */ |
| { |
| send_with_reply ("USP", buf, sizeof (buf)); |
| } |
| |
| /* fetch STACKPOINTER */ |
| |
| p = buf; |
| for (k = 0; k < 4; k++) |
| { |
| if (p[k * 2 + 1] == 0 || p[k * 2 + 2] == 0) |
| { |
| error ("Emulator reply is too short: %s", buf); |
| } |
| deprecated_registers[r++] = fromhex (buf[k * 2 + 1]) * 16 + fromhex (buf[k * 2 + 2]); |
| } |
| |
| /* fetch STATUS */ |
| |
| p = SR_buf; |
| for (k = 0; k < 4; k++) |
| { |
| if (p[k * 2 + 1] == 0 || p[k * 2 + 2] == 0) |
| { |
| error ("Emulator reply is too short: %s", buf); |
| } |
| deprecated_registers[r++] = |
| fromhex (SR_buf[k * 2 + 1]) * 16 + fromhex (SR_buf[k * 2 + 2]); |
| } |
| |
| /* fetch PC */ |
| |
| send_with_reply ("PC", buf, sizeof (buf)); |
| p = buf; |
| for (k = 0; k < 4; k++) |
| { |
| if (p[k * 2 + 1] == 0 || p[k * 2 + 2] == 0) |
| { |
| error ("Emulator reply is too short: %s", buf); |
| } |
| deprecated_registers[r++] = fromhex (buf[k * 2 + 1]) * 16 + fromhex (buf[k * 2 + 2]); |
| } |
| } |
| } |
| |
| /* Store register value, located in REGISTER, on the target processor. |
| regno - the register-number of the register to store |
| (-1 means store them all) |
| FIXME: Return errno value. */ |
| |
| static void |
| es1800_store_register (int regno) |
| { |
| |
| static char regtab[18][4] = |
| { |
| "D0 ", "D1 ", "D2 ", "D3 ", "D4 ", "D5 ", "D6 ", "D7 ", |
| "A0 ", "A1 ", "A2 ", "A3 ", "A4 ", "A5 ", "A6 ", "SSP", |
| "SR ", "PC " |
| }; |
| |
| char buf[PBUFSIZ]; |
| char SR_buf[PBUFSIZ]; |
| char stack_pointer[4]; |
| char *p; |
| int i; |
| int j; |
| int k; |
| unsigned char *r; |
| |
| r = (unsigned char *) deprecated_registers; |
| |
| if (regno == -1) /* write all registers */ |
| { |
| j = 0; |
| k = 18; |
| } |
| else |
| /* write one register */ |
| { |
| j = regno; |
| k = regno + 1; |
| r += regno * 4; |
| } |
| |
| if ((regno == -1) || (regno == 15)) |
| { |
| /* fetch current status */ |
| send_with_reply ("SR", SR_buf, sizeof (SR_buf)); |
| p = SR_buf; |
| p += 5; |
| if (m68020) |
| { |
| if (*p == '3') /* use masterstackpointer MSP */ |
| { |
| strcpy (stack_pointer, "MSP"); |
| } |
| else |
| { |
| if (*p == '2') /* use interruptstackpointer ISP */ |
| { |
| strcpy (stack_pointer, "ISP"); |
| } |
| else |
| { |
| strcpy (stack_pointer, "USP"); /* use userstackpointer USP */ |
| } |
| } |
| } |
| else |
| /* 68000-mode */ |
| { |
| if (*p == '2') /* use supervisorstackpointer SSP */ |
| { |
| strcpy (stack_pointer, "SSP"); |
| } |
| else |
| { |
| strcpy (stack_pointer, "USP"); /* use userstackpointer USP */ |
| } |
| } |
| strcpy (regtab[15], stack_pointer); |
| } |
| |
| for (i = j; i < k; i++) |
| { |
| buf[0] = regtab[i][0]; |
| buf[1] = regtab[i][1]; |
| buf[2] = regtab[i][2]; |
| buf[3] = '='; |
| buf[4] = '$'; |
| buf[5] = tohex ((*r >> 4) & 0x0f); |
| buf[6] = tohex (*r++ & 0x0f); |
| buf[7] = tohex ((*r >> 4) & 0x0f); |
| buf[8] = tohex (*r++ & 0x0f); |
| buf[9] = tohex ((*r >> 4) & 0x0f); |
| buf[10] = tohex (*r++ & 0x0f); |
| buf[11] = tohex ((*r >> 4) & 0x0f); |
| buf[12] = tohex (*r++ & 0x0f); |
| buf[13] = 0; |
| |
| send_with_reply (buf, buf, sizeof (buf)); /* FIXME, reply not used? */ |
| } |
| } |
| |
| |
| /* Prepare to store registers. */ |
| |
| static void |
| es1800_prepare_to_store (void) |
| { |
| /* Do nothing, since we can store individual regs */ |
| } |
| |
| /* Convert hex digit A to a number. */ |
| |
| static int |
| fromhex (int a) |
| { |
| if (a >= '0' && a <= '9') |
| { |
| return a - '0'; |
| } |
| else if (a >= 'a' && a <= 'f') |
| { |
| return a - 'a' + 10; |
| } |
| else if (a >= 'A' && a <= 'F') |
| { |
| return a - 'A' + 10; |
| } |
| else |
| { |
| error ("Reply contains invalid hex digit"); |
| } |
| return (-1); |
| } |
| |
| |
| /* Convert number NIB to a hex digit. */ |
| |
| static int |
| tohex (int nib) |
| { |
| if (nib < 10) |
| { |
| return ('0' + nib); |
| } |
| else |
| { |
| return ('A' + nib - 10); |
| } |
| } |
| |
| /* Read or write LEN bytes from inferior memory at MEMADDR, transferring |
| to or from debugger address MYADDR. Write to inferior if WRITE is |
| nonzero. Returns length of data written or read; 0 for error. |
| |
| memaddr - the target's address |
| myaddr - gdb's address |
| len - number of bytes |
| write - write if != 0 otherwise read |
| tops - unused */ |
| |
| static int |
| es1800_xfer_inferior_memory (CORE_ADDR memaddr, char *myaddr, int len, |
| int write, struct mem_attrib *attrib, |
| struct target_ops *target) |
| { |
| int origlen = len; |
| int xfersize; |
| |
| while (len > 0) |
| { |
| xfersize = len > MAXBUFBYTES ? MAXBUFBYTES : len; |
| if (write) |
| { |
| es1800_write_bytes (memaddr, myaddr, xfersize); |
| } |
| else |
| { |
| es1800_read_bytes (memaddr, myaddr, xfersize); |
| } |
| memaddr += xfersize; |
| myaddr += xfersize; |
| len -= xfersize; |
| } |
| return (origlen); /* no error possible */ |
| } |
| |
| |
| /* Write memory data directly to the emulator. |
| This does not inform the data cache; the data cache uses this. |
| MEMADDR is the address in the remote memory space. |
| MYADDR is the address of the buffer in our space. |
| LEN is the number of bytes. |
| |
| memaddr - the target's address |
| myaddr - gdb's address |
| len - number of bytes */ |
| |
| static void |
| es1800_write_bytes (CORE_ADDR memaddr, char *myaddr, int len) |
| { |
| char buf[PBUFSIZ]; |
| int i; |
| char *p; |
| |
| p = myaddr; |
| for (i = 0; i < len; i++) |
| { |
| sprintf (buf, "@.B$%x=$%x", memaddr + i, (*p++) & 0xff); |
| send_with_reply (buf, buf, sizeof (buf)); /* FIXME send_command? */ |
| } |
| } |
| |
| |
| /* Read memory data directly from the emulator. |
| This does not use the data cache; the data cache uses this. |
| |
| memaddr - the target's address |
| myaddr - gdb's address |
| len - number of bytes */ |
| |
| static void |
| es1800_read_bytes (CORE_ADDR memaddr, char *myaddr, int len) |
| { |
| static int DB_tab[16] = |
| {8, 11, 14, 17, 20, 23, 26, 29, 34, 37, 40, 43, 46, 49, 52, 55}; |
| char buf[PBUFSIZ]; |
| int i; |
| int low_addr; |
| char *p; |
| char *b; |
| |
| if (len > PBUFSIZ / 2 - 1) |
| { |
| internal_error (__FILE__, __LINE__, "failed internal consistency check"); |
| } |
| |
| if (len == 1) /* The emulator does not like expressions like: */ |
| { |
| len = 2; /* DB.B $20018 TO $20018 */ |
| } |
| |
| /* Reply describes registers byte by byte, each byte encoded as two hex |
| characters. */ |
| |
| sprintf (buf, "DB.B $%x TO $%x", memaddr, memaddr + len - 1); |
| send_with_reply (buf, buf, sizeof (buf)); |
| b = buf; |
| low_addr = memaddr & 0x0f; |
| for (i = low_addr; i < low_addr + len; i++) |
| { |
| if ((!(i % 16)) && i) |
| { /* if (i = 16,32,48) */ |
| while (*p++ != '\n') |
| {; |
| } |
| b = p; |
| } |
| p = b + DB_tab[i % 16] + (m68020 ? 2 : 0); |
| if (p[0] == 32 || p[1] == 32) |
| { |
| error ("Emulator reply is too short: %s", buf); |
| } |
| myaddr[i - low_addr] = fromhex (p[0]) * 16 + fromhex (p[1]); |
| } |
| } |
| |
| /* Display information about the current target. TOPS is unused. */ |
| |
| static void |
| es1800_files_info (struct target_ops *tops) |
| { |
| printf ("ES1800 Attached to %s at %d baud in %s mode\n", savename, 19200, |
| MODE); |
| } |
| |
| |
| /* We read the contents of the target location and stash it, |
| then overwrite it with a breakpoint instruction. |
| |
| addr - is the target location in the target machine. |
| contents_cache - is a pointer to memory allocated for saving the target contents. |
| It is guaranteed by the caller to be long enough to save sizeof |
| BREAKPOINT bytes. |
| |
| FIXME: This size is target_arch dependent and should be available in |
| the target_arch transfer vector, if we ever have one... */ |
| |
| static int |
| es1800_insert_breakpoint (CORE_ADDR addr, char *contents_cache) |
| { |
| int val; |
| |
| val = target_read_memory (addr, contents_cache, sizeof (es1800_break_insn)); |
| |
| if (val == 0) |
| { |
| val = target_write_memory (addr, es1800_break_insn, |
| sizeof (es1800_break_insn)); |
| } |
| |
| return (val); |
| } |
| |
| |
| /* Write back the stashed instruction |
| |
| addr - is the target location in the target machine. |
| contents_cache - is a pointer to memory allocated for saving the target contents. |
| It is guaranteed by the caller to be long enough to save sizeof |
| BREAKPOINT bytes. */ |
| |
| static int |
| es1800_remove_breakpoint (CORE_ADDR addr, char *contents_cache) |
| { |
| |
| return (target_write_memory (addr, contents_cache, |
| sizeof (es1800_break_insn))); |
| } |
| |
| /* create_break_insn () |
| Primitive datastructures containing the es1800 breakpoint instruction */ |
| |
| static void |
| es1800_create_break_insn (char *ins, int vec) |
| { |
| if (vec == 15) |
| { |
| ins[0] = 0x4e; |
| ins[1] = 0x4f; |
| } |
| } |
| |
| |
| /* verify_break () |
| Seach for breakpoint routine in emulator memory. |
| returns non-zero on failure |
| vec - trap vector used for breakpoints */ |
| |
| static int |
| verify_break (int vec) |
| { |
| CORE_ADDR memaddress; |
| char buf[8]; |
| char *instr = "NqNqNqNs"; /* breakpoint routine */ |
| int status; |
| |
| get_break_addr (vec, &memaddress); |
| |
| if (memaddress) |
| { |
| status = target_read_memory (memaddress, buf, 8); |
| if (status != 0) |
| { |
| memory_error (status, memaddress); |
| } |
| return (strcmp (instr, buf)); |
| } |
| return (-1); |
| } |
| |
| |
| /* get_break_addr () |
| find address of breakpoint routine |
| vec - trap vector used for breakpoints |
| addrp - store the address here */ |
| |
| static void |
| get_break_addr (int vec, CORE_ADDR *addrp) |
| { |
| CORE_ADDR memaddress = 0; |
| int status; |
| int k; |
| char buf[PBUFSIZ]; |
| char base_addr[4]; |
| char *p; |
| |
| if (m68020) |
| { |
| send_with_reply ("VBR ", buf, sizeof (buf)); |
| p = buf; |
| for (k = 0; k < 4; k++) |
| { |
| if ((p[k * 2 + 1] == 0) || (p[k * 2 + 2] == 0)) |
| { |
| error ("Emulator reply is too short: %s", buf); |
| } |
| base_addr[k] = (fromhex (p[k * 2 + 1]) * 16) + fromhex (p[k * 2 + 2]); |
| } |
| /* base addr of exception vector table */ |
| memaddress = *((CORE_ADDR *) base_addr); |
| } |
| |
| memaddress += (vec + 32) * 4; /* address of trap vector */ |
| status = target_read_memory (memaddress, (char *) addrp, 4); |
| if (status != 0) |
| { |
| memory_error (status, memaddress); |
| } |
| } |
| |
| |
| /* Kill an inferior process */ |
| |
| static void |
| es1800_kill (void) |
| { |
| if (!ptid_equal (inferior_ptid, null_ptid)) |
| { |
| inferior_ptid = null_ptid; |
| es1800_mourn_inferior (); |
| } |
| } |
| |
| |
| /* Load a file to the ES1800 emulator. |
| Converts the file from a.out format into Extended Tekhex format |
| before the file is loaded. |
| Also loads the trap routine, and sets the ES1800 breakpoint on it |
| filename - the a.out to be loaded |
| from_tty - says whether to be verbose or not |
| FIXME Uses emulator overlay memory for trap routine */ |
| |
| static void |
| es1800_load (char *filename, int from_tty) |
| { |
| |
| FILE *instream; |
| char loadname[15]; |
| char buf[160]; |
| struct cleanup *old_chain; |
| int es1800_load_format = 5; |
| |
| if (es1800_desc == NULL) |
| { |
| printf ("No emulator attached, type emulator-command first\n"); |
| return; |
| } |
| |
| filename = tilde_expand (filename); |
| make_cleanup (xfree, filename); |
| |
| switch (es1800_load_format) |
| { |
| case 2: /* Extended Tekhex */ |
| if (from_tty) |
| { |
| printf ("Converting \"%s\" to Extended Tekhex Format\n", filename); |
| } |
| sprintf (buf, "tekhex %s", filename); |
| system (buf); |
| sprintf (loadname, "out.hex"); |
| break; |
| |
| case 5: /* Motorola S-rec */ |
| if (from_tty) |
| { |
| printf ("Converting \"%s\" to Motorola S-record format\n", |
| filename); |
| } |
| /* in the future the source code in copy (part of binutils-1.93) will |
| be included in this file */ |
| sprintf (buf, |
| "copy -s \"a.out-sunos-big\" -d \"srec\" %s /tmp/out.hex", |
| filename); |
| system (buf); |
| sprintf (loadname, "/tmp/out.hex"); |
| break; |
| |
| default: |
| error ("Downloading format not defined\n"); |
| } |
| |
| breakpoint_init_inferior (); |
| inferior_ptid = null_ptid; |
| if (from_tty) |
| { |
| printf ("Downloading \"%s\" to the ES 1800\n", filename); |
| } |
| if ((instream = fopen (loadname, "r")) == NULL) |
| { |
| perror_with_name ("fopen:"); |
| } |
| |
| old_chain = make_cleanup (fclose, instream); |
| immediate_quit++; |
| |
| es1800_reset (0); |
| |
| download (instream, from_tty, es1800_load_format); |
| |
| /* if breakpoint routine is not present anymore we have to check |
| whether to download a new breakpoint routine or not */ |
| |
| if ((verify_break (es1800_break_vec) != 0) |
| && query ("No breakpoint routine in ES 1800 emulator!\nDownload a breakpoint routine to the emulator? ")) |
| { |
| char buf[128]; |
| printf ("Using break vector 0x%x\n", es1800_break_vec); |
| sprintf (buf, "0x%x ", es1800_break_vec); |
| printf ("Give the start address of the breakpoint routine: "); |
| fgets (buf + strlen (buf), sizeof (buf) - strlen (buf), stdin); |
| es1800_init_break (buf, 0); |
| } |
| |
| do_cleanups (old_chain); |
| expect_prompt (); |
| readchar (); /* FIXME I am getting a ^G = 7 after the prompt */ |
| printf ("\n"); |
| |
| if (fclose (instream) == EOF) |
| { |
| ; |
| } |
| |
| if (es1800_load_format != 2) |
| { |
| sprintf (buf, "/usr/bin/rm %s", loadname); |
| system (buf); |
| } |
| |
| symbol_file_add_main (filename, from_tty); /* reading symbol table */ |
| immediate_quit--; |
| } |
| |
| #if 0 |
| |
| #define NUMCPYBYTES 20 |
| |
| static void |
| bfd_copy (bfd *from_bfd, bfd *to_bfd) |
| { |
| asection *p, *new; |
| int i; |
| char buf[NUMCPYBYTES]; |
| |
| for (p = from_bfd->sections; p != NULL; p = p->next) |
| { |
| printf (" Copying section %s. Size = %x.\n", p->name, p->_cooked_size); |
| printf (" vma = %x, offset = %x, output_sec = %x\n", |
| p->vma, p->output_offset, p->output_section); |
| new = bfd_make_section (to_bfd, p->name); |
| if (p->_cooked_size && |
| !bfd_set_section_size (to_bfd, new, p->_cooked_size)) |
| { |
| error ("Wrong BFD size!\n"); |
| } |
| if (!bfd_set_section_flags (to_bfd, new, p->flags)) |
| { |
| error ("bfd_set_section_flags"); |
| } |
| new->vma = p->vma; |
| |
| for (i = 0; (i + NUMCPYBYTES) < p->_cooked_size; i += NUMCPYBYTES) |
| { |
| if (!bfd_get_section_contents (from_bfd, p, (PTR) buf, (file_ptr) i, |
| (bfd_size_type) NUMCPYBYTES)) |
| { |
| error ("bfd_get_section_contents\n"); |
| } |
| if (!bfd_set_section_contents (to_bfd, new, (PTR) buf, (file_ptr) i, |
| (bfd_size_type) NUMCPYBYTES)) |
| { |
| error ("bfd_set_section_contents\n"); |
| } |
| } |
| bfd_get_section_contents (from_bfd, p, (PTR) buf, (file_ptr) i, |
| (bfd_size_type) (p->_cooked_size - i)); |
| bfd_set_section_contents (to_bfd, new, (PTR) buf, (file_ptr) i, |
| (bfd_size_type) (p->_cooked_size - i)); |
| } |
| } |
| |
| #endif |
| |
| /* Start an process on the es1800 and set inferior_ptid to the new |
| process' pid. |
| execfile - the file to run |
| args - arguments passed to the program |
| env - the environment vector to pass */ |
| |
| static void |
| es1800_create_inferior (char *execfile, char *args, char **env) |
| { |
| int entry_pt; |
| int pid; |
| #if 0 |
| struct expression *expr; |
| register struct cleanup *old_chain = 0; |
| register value val; |
| #endif |
| |
| if (args && *args) |
| { |
| error ("Can't pass arguments to remote ES1800 process"); |
| } |
| |
| #if 0 |
| if (query ("Use 'start' as entry point? ")) |
| { |
| expr = parse_c_expression ("start"); |
| old_chain = make_cleanup (free_current_contents, &expr); |
| val = evaluate_expression (expr); |
| entry_pt = (val->location).address; |
| } |
| else |
| { |
| printf ("Enter the program's entry point (in hexadecimal): "); |
| scanf ("%x", &entry_pt); |
| } |
| #endif |
| |
| if (execfile == 0 || exec_bfd == 0) |
| { |
| error ("No executable file specified"); |
| } |
| |
| entry_pt = (int) bfd_get_start_address (exec_bfd); |
| |
| pid = 42; |
| |
| /* Now that we have a child process, make it our target. */ |
| |
| push_target (&es1800_child_ops); |
| |
| /* The "process" (board) is already stopped awaiting our commands, and |
| the program is already downloaded. We just set its PC and go. */ |
| |
| inferior_ptid = pid_to_ptid (pid); /* Needed for wait_for_inferior below */ |
| |
| clear_proceed_status (); |
| |
| /* Tell wait_for_inferior that we've started a new process. */ |
| |
| init_wait_for_inferior (); |
| |
| /* Set up the "saved terminal modes" of the inferior |
| based on what modes we are starting it with. */ |
| |
| target_terminal_init (); |
| |
| /* Install inferior's terminal modes. */ |
| |
| target_terminal_inferior (); |
| |
| /* remote_start (args); */ |
| /* trap_expected = 0; */ |
| /* insert_step_breakpoint (); FIXME, do we need this? */ |
| |
| /* Let 'er rip... */ |
| proceed ((CORE_ADDR) entry_pt, TARGET_SIGNAL_DEFAULT, 0); |
| |
| } |
| |
| |
| /* The process has died, clean up. */ |
| |
| static void |
| es1800_mourn_inferior (void) |
| { |
| remove_breakpoints (); |
| unpush_target (&es1800_child_ops); |
| generic_mourn_inferior (); /* Do all the proper things now */ |
| } |
| |
| /* ES1800-protocol specific routines */ |
| |
| /* Keep discarding input from the remote system, until STRING is found. |
| Let the user break out immediately. |
| string - the string to expect |
| nowait - break out if string not the emulator's first respond otherwise |
| read until string is found (== 0) */ |
| |
| static void |
| expect (char *string, int nowait) |
| { |
| char c; |
| char *p = string; |
| |
| immediate_quit++; |
| while (1) |
| { |
| c = readchar (); |
| if (isalpha (c)) |
| { |
| c = toupper (c); |
| } |
| if (c == toupper (*p)) |
| { |
| p++; |
| if (*p == '\0') |
| { |
| immediate_quit--; |
| return; |
| } |
| } |
| else if (!nowait) |
| { |
| p = string; |
| } |
| else |
| { |
| printf ("\'%s\' expected\n", string); |
| printf ("char %d is %d", p - string, c); |
| error ("\n"); |
| } |
| } |
| } |
| |
| /* Keep discarding input until we see the prompt. */ |
| |
| static void |
| expect_prompt (void) |
| { |
| expect (">", 0); |
| } |
| |
| |
| /* Read one character */ |
| |
| #ifdef DEBUG_STDIN |
| |
| /* read from stdin */ |
| |
| static int |
| readchar (void) |
| { |
| char buf[1]; |
| |
| buf[0] = '\0'; |
| printf ("readchar, give one character\n"); |
| read (0, buf, 1); |
| |
| #if defined (LOG_FILE) |
| putc (buf[0] & 0x7f, log_file); |
| #endif |
| |
| return (buf[0] & 0x7f); |
| } |
| |
| #else /* !DEBUG_STDIN */ |
| |
| /* Read a character from the remote system, doing all the fancy |
| timeout stuff. */ |
| |
| static int |
| readchar (void) |
| { |
| int ch; |
| |
| ch = serial_readchar (es1800_desc, timeout); |
| |
| /* FIXME: doing an error() here will probably cause trouble, at least if from |
| es1800_wait. */ |
| if (ch == SERIAL_TIMEOUT) |
| error ("Timeout reading from remote system."); |
| else if (ch == SERIAL_ERROR) |
| perror_with_name ("remote read"); |
| |
| #if defined (LOG_FILE) |
| putc (ch & 0x7f, log_file); |
| fflush (log_file); |
| #endif |
| |
| return (ch); |
| } |
| |
| #endif /* DEBUG_STDIN */ |
| |
| |
| /* Send a command to the emulator and save the reply. |
| Report an error if we get an error reply. |
| string - the es1800 command |
| buf - containing the emulator reply on return |
| len - size of buf */ |
| |
| static void |
| send_with_reply (char *string, char *buf, int len) |
| { |
| send (string); |
| serial_write (es1800_desc, "\r", 1); |
| |
| #ifndef DEBUG_STDIN |
| expect (string, 1); |
| expect ("\r\n", 0); |
| #endif |
| |
| getmessage (buf, len); |
| } |
| |
| |
| /* Send the command in STR to the emulator adding \r. check |
| the echo for consistency. |
| string - the es1800 command */ |
| |
| static void |
| send_command (char *string) |
| { |
| send (string); |
| serial_write (es1800_desc, "\r", 1); |
| |
| #ifndef DEBUG_STDIN |
| expect (string, 0); |
| expect_prompt (); |
| #endif |
| |
| } |
| |
| /* Send a string |
| string - the es1800 command */ |
| |
| static void |
| send (char *string) |
| { |
| if (kiodebug) |
| { |
| fprintf_unfiltered (gdb_stderr, "Sending: %s\n", string); |
| } |
| serial_write (es1800_desc, string, strlen (string)); |
| } |
| |
| |
| /* Read a message from the emulator and store it in BUF. |
| buf - containing the emulator reply on return |
| len - size of buf */ |
| |
| static void |
| getmessage (char *buf, int len) |
| { |
| char *bp; |
| int c; |
| int prompt_found = 0; |
| extern kiodebug; |
| |
| #if defined (LOG_FILE) |
| /* This is a convenient place to do this. The idea is to do it often |
| enough that we never lose much data if we terminate abnormally. */ |
| fflush (log_file); |
| #endif |
| |
| bp = buf; |
| c = readchar (); |
| do |
| { |
| if (c) |
| { |
| if (len-- < 2) /* char and terminaling NULL */ |
| { |
| error ("input buffer overrun\n"); |
| } |
| *bp++ = c; |
| } |
| c = readchar (); |
| if ((c == '>') && (*(bp - 1) == ' ')) |
| { |
| prompt_found = 1; |
| } |
| } |
| while (!prompt_found); |
| *bp = 0; |
| |
| if (kiodebug) |
| { |
| fprintf_unfiltered (gdb_stderr, "message received :%s\n", buf); |
| } |
| } |
| |
| static void |
| download (FILE *instream, int from_tty, int format) |
| { |
| char c; |
| char buf[160]; |
| int i = 0; |
| |
| send_command ("SET #2,$1A"); /* reset char = ^Z */ |
| send_command ("SET #3,$11,$13"); /* XON XOFF */ |
| if (format == 2) |
| { |
| send_command ("SET #26,#2"); |
| } |
| else |
| { |
| send_command ("SET #26,#5"); /* Format=Extended Tekhex */ |
| } |
| send_command ("DFB = $10"); |
| send_command ("PUR"); |
| send_command ("CES"); |
| send ("DNL\r"); |
| expect ("DNL", 1); |
| if (from_tty) |
| { |
| printf (" 0 records loaded...\r"); |
| } |
| while (fgets (buf, 160, instream)) |
| { |
| send (buf); |
| if (from_tty) |
| { |
| printf ("%5d\b\b\b\b\b", ++i); |
| fflush (stdout); |
| } |
| if ((c = readchar ()) != 006) |
| { |
| error ("expected ACK"); |
| } |
| } |
| if (from_tty) |
| { |
| printf ("- All"); |
| } |
| } |
| |
| /* Additional commands */ |
| |
| #if defined (TIOCGETP) && defined (FNDELAY) && defined (EWOULDBLOCK) |
| #define PROVIDE_TRANSPARENT |
| #endif |
| |
| #ifdef PROVIDE_TRANSPARENT |
| /* Talk directly to the emulator |
| FIXME, uses busy wait, and is SUNOS (or at least BSD) specific */ |
| |
| /*ARGSUSED */ |
| static void |
| es1800_transparent (char *args, int from_tty) |
| { |
| int console; |
| struct sgttyb modebl; |
| int fcflag; |
| int cc; |
| struct sgttyb console_mode_save; |
| int console_fc_save; |
| int es1800_fc_save; |
| int inputcnt = 80; |
| char inputbuf[80]; |
| int consolecnt = 0; |
| char consolebuf[80]; |
| int es1800_cnt = 0; |
| char es1800_buf[80]; |
| int i; |
| |
| dont_repeat (); |
| if (es1800_desc == NULL) |
| { |
| printf ("No emulator attached, type emulator-command first\n"); |
| return; |
| } |
| |
| printf ("\n"); |
| printf ("You are now communicating directly with the ES 1800 emulator.\n"); |
| printf ("To leave this mode (transparent mode), press ^E.\n"); |
| printf ("\n"); |
| printf (" >"); |
| fflush (stdout); |
| |
| if ((console = open ("/dev/tty", O_RDWR)) == -1) |
| { |
| perror_with_name ("/dev/tty:"); |
| } |
| |
| if ((fcflag = fcntl (console, F_GETFL, 0)) == -1) |
| { |
| perror_with_name ("fcntl console"); |
| } |
| |
| console_fc_save = fcflag; |
| fcflag = fcflag | FNDELAY; |
| |
| if (fcntl (console, F_SETFL, fcflag) == -1) |
| { |
| perror_with_name ("fcntl console"); |
| } |
| |
| if (ioctl (console, TIOCGETP, &modebl)) |
| { |
| perror_with_name ("ioctl console"); |
| } |
| |
| console_mode_save = modebl; |
| modebl.sg_flags = RAW; |
| |
| if (ioctl (console, TIOCSETP, &modebl)) |
| { |
| perror_with_name ("ioctl console"); |
| } |
| |
| if ((fcflag = fcntl (deprecated_serial_fd (es1800_desc), F_GETFL, 0)) == -1) |
| { |
| perror_with_name ("fcntl serial"); |
| } |
| |
| es1800_fc_save = fcflag; |
| fcflag = fcflag | FNDELAY; |
| |
| if (fcntl (deprecated_serial_fd (es1800_desc), F_SETFL, fcflag) == -1) |
| { |
| perror_with_name ("fcntl serial"); |
| } |
| |
| while (1) |
| { |
| cc = read (console, inputbuf, inputcnt); |
| if (cc != -1) |
| { |
| if ((*inputbuf & 0x7f) == 0x05) |
| { |
| break; |
| } |
| for (i = 0; i < cc;) |
| { |
| es1800_buf[es1800_cnt++] = inputbuf[i++]; |
| } |
| if ((cc = serial_write (es1800_desc, es1800_buf, es1800_cnt)) == -1) |
| { |
| perror_with_name ("FEL! write:"); |
| } |
| es1800_cnt -= cc; |
| if (es1800_cnt && cc) |
| { |
| for (i = 0; i < es1800_cnt; i++) |
| { |
| es1800_buf[i] = es1800_buf[cc + i]; |
| } |
| } |
| } |
| else if (errno != EWOULDBLOCK) |
| { |
| perror_with_name ("FEL! read:"); |
| } |
| |
| cc = read (deprecated_serial_fd (es1800_desc), inputbuf, inputcnt); |
| if (cc != -1) |
| { |
| for (i = 0; i < cc;) |
| { |
| consolebuf[consolecnt++] = inputbuf[i++]; |
| } |
| if ((cc = write (console, consolebuf, consolecnt)) == -1) |
| { |
| perror_with_name ("FEL! write:"); |
| } |
| consolecnt -= cc; |
| if (consolecnt && cc) |
| { |
| for (i = 0; i < consolecnt; i++) |
| { |
| consolebuf[i] = consolebuf[cc + i]; |
| } |
| } |
| } |
| else if (errno != EWOULDBLOCK) |
| { |
| perror_with_name ("FEL! read:"); |
| } |
| } |
| |
| console_fc_save = console_fc_save & !FNDELAY; |
| if (fcntl (console, F_SETFL, console_fc_save) == -1) |
| { |
| perror_with_name ("FEL! fcntl"); |
| } |
| |
| if (ioctl (console, TIOCSETP, &console_mode_save)) |
| { |
| perror_with_name ("FEL! ioctl"); |
| } |
| |
| close (console); |
| |
| if (fcntl (deprecated_serial_fd (es1800_desc), F_SETFL, es1800_fc_save) == -1) |
| { |
| perror_with_name ("FEL! fcntl"); |
| } |
| |
| printf ("\n"); |
| |
| } |
| #endif /* PROVIDE_TRANSPARENT */ |
| |
| static void |
| es1800_init_break (char *args, int from_tty) |
| { |
| CORE_ADDR memaddress = 0; |
| char buf[PBUFSIZ]; |
| char base_addr[4]; |
| char *space_index; |
| char *p; |
| int k; |
| |
| if (args == NULL) |
| { |
| error_no_arg ("a trap vector"); |
| } |
| |
| if (!(space_index = strchr (args, ' '))) |
| { |
| error ("Two arguments needed (trap vector and address of break routine).\n"); |
| } |
| |
| *space_index = '\0'; |
| |
| es1800_break_vec = strtol (args, (char **) NULL, 0); |
| es1800_break_address = parse_and_eval_address (space_index + 1); |
| |
| es1800_create_break_insn (es1800_break_insn, es1800_break_vec); |
| |
| if (m68020) |
| { |
| send_with_reply ("VBR ", buf, sizeof (buf)); |
| p = buf; |
| for (k = 0; k < 4; k++) |
| { |
| if ((p[k * 2 + 1] == 0) || (p[k * 2 + 2] == 0)) |
| { |
| error ("Emulator reply is too short: %s", buf); |
| } |
| base_addr[k] = (fromhex (p[k * 2 + 1]) * 16) + fromhex (p[k * 2 + 2]); |
| } |
| /* base addr of exception vector table */ |
| memaddress = *((CORE_ADDR *) base_addr); |
| } |
| |
| memaddress += (es1800_break_vec + 32) * 4; /* address of trap vector */ |
| |
| sprintf (buf, "@.L%lx=$%lx", memaddress, es1800_break_address); |
| send_command (buf); /* set the address of the break routine in the */ |
| /* trap vector */ |
| |
| sprintf (buf, "@.L%lx=$4E714E71", es1800_break_address); /* NOP; NOP */ |
| send_command (buf); |
| sprintf (buf, "@.L%lx=$4E714E73", es1800_break_address + 4); /* NOP; RTE */ |
| send_command (buf); |
| |
| sprintf (buf, "AC2=$%lx", es1800_break_address + 4); |
| /* breakpoint at es1800-break_address */ |
| send_command (buf); |
| send_command ("WHEN AC2 THEN BRK"); /* ie in exception routine */ |
| |
| if (from_tty) |
| { |
| printf ("Breakpoint (trap $%x) routine at address: %lx\n", |
| es1800_break_vec, es1800_break_address); |
| } |
| } |
| |
| static void |
| es1800_child_open (char *arg, int from_tty) |
| { |
| error ("Use the \"run\" command to start a child process."); |
| } |
| |
| static void |
| es1800_child_detach (char *args, int from_tty) |
| { |
| if (args) |
| { |
| error ("Argument given to \"detach\" when remotely debugging."); |
| } |
| |
| pop_target (); |
| if (from_tty) |
| { |
| printf ("Ending debugging the process %d.\n", PIDGET (inferior_ptid)); |
| } |
| } |
| |
| |
| /* Define the target subroutine names */ |
| |
| struct target_ops es1800_ops; |
| |
| static void |
| init_es1800_ops (void) |
| { |
| es1800_ops.to_shortname = "es1800"; |
| es1800_ops.to_longname = "Remote serial target in ES1800-emulator protocol"; |
| es1800_ops.to_doc = "Remote debugging on the es1800 emulator via a serial line.\n\ |
| Specify the serial device it is connected to (e.g. /dev/ttya)."; |
| es1800_ops.to_open = es1800_open; |
| es1800_ops.to_close = es1800_close; |
| es1800_ops.to_attach = es1800_attach; |
| es1800_ops.to_detach = es1800_detach; |
| es1800_ops.to_resume = es1800_resume; |
| es1800_ops.to_prepare_to_store = es1800_prepare_to_store; |
| es1800_ops.to_xfer_memory = es1800_xfer_inferior_memory; |
| es1800_ops.to_files_info = es1800_files_info; |
| es1800_ops.to_insert_breakpoint = es1800_insert_breakpoint; |
| es1800_ops.to_remove_breakpoint = es1800_remove_breakpoint; |
| es1800_ops.to_load = es1800_load; |
| es1800_ops.to_create_inferior = es1800_create_inferior; |
| es1800_ops.to_stratum = core_stratum; |
| es1800_ops.to_has_memory = 1; |
| es1800_ops.to_magic = OPS_MAGIC; |
| } |
| |
| /* Define the target subroutine names */ |
| |
| struct target_ops es1800_child_ops; |
| |
| static void |
| init_es1800_child_ops (void) |
| { |
| es1800_child_ops.to_shortname = "es1800_process"; |
| es1800_child_ops.to_longname = "Remote serial target in ES1800-emulator protocol"; |
| es1800_child_ops.to_doc = "Remote debugging on the es1800 emulator via a serial line.\n\ |
| Specify the serial device it is connected to (e.g. /dev/ttya)."; |
| es1800_child_ops.to_open = es1800_child_open; |
| es1800_child_ops.to_attach = es1800_attach; |
| es1800_child_ops.to_detach = es1800_child_detach; |
| es1800_child_ops.to_resume = es1800_resume; |
| es1800_child_ops.to_wait = es1800_wait; |
| es1800_child_ops.to_fetch_registers = es1800_fetch_register; |
| es1800_child_ops.to_store_registers = es1800_store_register; |
| es1800_child_ops.to_prepare_to_store = es1800_prepare_to_store; |
| es1800_child_ops.to_xfer_memory = es1800_xfer_inferior_memory; |
| es1800_child_ops.to_files_info = es1800_files_info; |
| es1800_child_ops.to_insert_breakpoint = es1800_insert_breakpoint; |
| es1800_child_ops.to_remove_breakpoint = es1800_remove_breakpoint; |
| es1800_child_ops.to_kill = es1800_kill; |
| es1800_child_ops.to_load = es1800_load; |
| es1800_child_ops.to_create_inferior = es1800_create_inferior; |
| es1800_child_ops.to_mourn_inferior = es1800_mourn_inferior; |
| es1800_child_ops.to_stratum = process_stratum; |
| es1800_child_ops.to_has_all_memory = 1; |
| es1800_child_ops.to_has_memory = 1; |
| es1800_child_ops.to_has_stack = 1; |
| es1800_child_ops.to_has_registers = 1; |
| es1800_child_ops.to_has_execution = 1; |
| es1800_child_ops.to_magic = OPS_MAGIC; |
| } |
| |
| void |
| _initialize_es1800 (void) |
| { |
| init_es1800_ops (); |
| init_es1800_child_ops (); |
| add_target (&es1800_ops); |
| add_target (&es1800_child_ops); |
| #ifdef PROVIDE_TRANSPARENT |
| add_com ("transparent", class_support, es1800_transparent, |
| "Start transparent communication with the ES 1800 emulator."); |
| #endif /* PROVIDE_TRANSPARENT */ |
| add_com ("init_break", class_support, es1800_init_break, |
| "Download break routine and initialize break facility on ES 1800"); |
| } |