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Diffstat (limited to 'gdb/remote-mm.c')
| -rw-r--r-- | gdb/remote-mm.c | 1673 |
1 files changed, 1673 insertions, 0 deletions
diff --git a/gdb/remote-mm.c b/gdb/remote-mm.c new file mode 100644 index 00000000000..19455b4fc05 --- /dev/null +++ b/gdb/remote-mm.c @@ -0,0 +1,1673 @@ +/* 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 |