From: John Gilmore Date: Fri, 13 Sep 1991 01:07:53 +0000 (+0000) Subject: Add new files for 29K and Ultracomputer support. X-Git-Url: https://git.libre-soc.org/?a=commitdiff_plain;h=7c18a68f004488fd812714d86c77fc24f9f798db;p=binutils-gdb.git Add new files for 29K and Ultracomputer support. --- diff --git a/gdb/minimon.h b/gdb/minimon.h new file mode 100644 index 00000000000..7084f4f5eeb --- /dev/null +++ b/gdb/minimon.h @@ -0,0 +1,562 @@ +/* Definitions and macros for support of AMD's remote debugger, MiniMON. + Copyright (C) 1990, 1991 Free Software Foundation, Inc. + +This file is part of GDB. + +This program is free software; you can redistribute it and/or modify +it under the terms of the GNU General Public License as published by +the Free Software Foundation; either version 2 of the License, or +(at your option) any later version. + +This program is distributed in the hope that it will be useful, +but WITHOUT ANY WARRANTY; without even the implied warranty of +MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the +GNU General Public License for more details. + +You should have received a copy of the GNU General Public License +along with this program; if not, write to the Free Software +Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. */ + +/* + * Some basic types. FIXME, this should be done by declaring bitfield + * sizes in the structs. We can't portably depend on a "long int" being + * 32 bits, etc. + */ +typedef long int INT32; /* 32 bit integer */ +typedef unsigned long int UINT32; /* 32 bit integer (unsigned) */ +typedef unsigned long int ADDR32; /* 32 bit address */ +typedef unsigned long int INST32; /* 32 bit instruction */ +typedef long int BOOLEAN; /* Boolean value (32 bit) */ +typedef unsigned char BYTE; /* byte (8 bit) */ +typedef short int INT16; /* 16 bit integer */ +typedef unsigned short int UINT16; /* 16 bit integer (unsigned) */ + +/****************************************************************************/ +/************************* Message Information ******************************/ +/****************************************************************************/ + +/* + * Error codes + */ + +/* General errors */ +#define EMUSAGE 1 /* Bad args / flags */ +#define EMFAIL 2 /* Unrecoverable error */ +#define EMBADADDR 3 /* Illegal address */ +#define EMBADREG 4 /* Illegal register */ +#define EMSYNTAX 5 /* Illegal command syntax */ +#define EMACCESS 6 /* Could not access memory */ +#define EMALLOC 7 /* Could not allocate memory */ +#define EMTARGET 8 /* Unknown target type */ +#define EMHINIT 9 /* Could not initialize host */ +#define EMCOMM 10 /* Could not open communication channel */ + +/* Message errors */ +#define EMBADMSG 11 /* Unknown message type */ +#define EMMSG2BIG 12 /* Message to large for buffer */ +#define EMNOSEND 13 /* Could not send message */ +#define EMNORECV 14 /* Could not receive message */ + +#define EMRESET 15 /* Could not RESET target */ +#define EMCONFIG 16 /* Could not get target CONFIG */ +#define EMSTATUS 17 /* Could not get target STATUS */ +#define EMREAD 18 /* Could not READ target memory */ +#define EMWRITE 19 /* Could not WRITE target memory */ +#define EMBKPTSET 20 /* Could not set breakpoint */ +#define EMBKPTRM 21 /* Could not remove breakpoint */ +#define EMBKPTSTAT 22 /* Could not get breakpoint status */ +#define EMBKPTNONE 23 /* All breakpoints in use */ +#define EMBKPTUSED 24 /* Breakpoints already in use */ +#define EMCOPY 25 /* Could not COPY target memory */ +#define EMFILL 26 /* Could not FILL target memory */ +#define EMINIT 27 /* Could not initialize target memory */ +#define EMGO 28 /* Could not start execution */ +#define EMSTEP 29 /* Could not single step */ +#define EMBREAK 30 /* Could not BREAK */ +#define EMHIF 31 /* Could not perform HIF service */ +#define EMCHANNEL0 32 /* Could not read CHANNEL0 */ +#define EMCHANNEL1 33 /* Could not write CHANNEL1 */ + +/* COFF file loader errors */ +#define EMOPEN 34 /* Could not open COFF file */ +#define EMHDR 35 /* Could not read COFF header */ +#define EMMAGIC 36 /* Bad magic number */ +#define EMAOUT 37 /* Could not read COFF a.out header */ +#define EMSCNHDR 38 /* Could not read COFF section header */ +#define EMSCN 39 /* Could not read COFF section */ +#define EMCLOSE 40 /* Could not close COFF file */ + +/* Log file errors */ +#define EMLOGOPEN 41 /* Could not open log file */ +#define EMLOGREAD 42 /* Could not read log file */ +#define EMLOGWRITE 43 /* Could not write to log file */ +#define EMLOGCLOSE 44 /* Could not close log file */ + +/* Command file errors */ +#define EMCMDOPEN 45 /* Could not open command file */ +#define EMCMDREAD 46 /* Could not read command file */ +#define EMCMDWRITE 47 /* Could not write to command file */ +#define EMCMDCLOSE 48 /* Could not close comand file */ + +#define EMTIMEOUT 49 /* Host timed out waiting for a message */ +#define EMCOMMTYPE 50 /* A '-t' flag must be specified */ +#define EMCOMMERR 51 /* Communication error */ +#define EMBAUD 52 /* Invalid baud rate specified */ +/* + * Memory Spaces + */ +#define LOCAL_REG 0 /* Local processor register */ +#define GLOBAL_REG 1 /* Global processor register */ +#define SPECIAL_REG 2 /* Special processor register */ +#define TLB_REG 3 /* Translation Lookaside Buffer */ +#define COPROC_REG 4 /* Coprocessor register */ +#define I_MEM 5 /* Instruction Memory */ +#define D_MEM 6 /* Data Memory */ +#define I_ROM 7 /* Instruction ROM */ +#define D_ROM 8 /* Data ROM */ +#define I_O 9 /* Input/Output */ +#define I_CACHE 10 /* Instruction Cache */ +#define D_CACHE 11 /* Data Cache */ + +/* To supress warnings for zero length array definitions */ +#define DUMMY 1 + +/* +** Host to target definitions +*/ + +#define RESET 0 +#define CONFIG_REQ 1 +#define STATUS_REQ 2 +#define READ_REQ 3 +#define WRITE_REQ 4 +#define BKPT_SET 5 +#define BKPT_RM 6 +#define BKPT_STAT 7 +#define COPY 8 +#define FILL 9 +#define INIT 10 +#define GO 11 +#define STEP 12 +#define BREAK 13 + +#define HIF_CALL_RTN 64 +#define CHANNEL0 65 +#define CHANNEL1_ACK 66 + + +/* +** Target to host definitions +*/ + +#define RESET_ACK 32 +#define CONFIG 33 +#define STATUS 34 +#define READ_ACK 35 +#define WRITE_ACK 36 +#define BKPT_SET_ACK 37 +#define BKPT_RM_ACK 38 +#define BKPT_STAT_ACK 39 +#define COPY_ACK 40 +#define FILL_ACK 41 +#define INIT_ACK 42 +#define HALT 43 + +#define ERROR 63 + +#define HIF_CALL 96 +#define CHANNEL0_ACK 97 +#define CHANNEL1 98 + + +/* A "generic" message */ +struct generic_msg_t { + INT32 code; /* generic */ + INT32 length; + BYTE byte[DUMMY]; +}; + + +/* A "generic" message (with an INT32 array) */ +struct generic_int32_msg_t { + INT32 code; /* generic */ + INT32 length; + INT32 int32[DUMMY]; +}; + + +/* +** Host to target messages +*/ + +struct reset_msg_t { + INT32 code; /* 0 */ + INT32 length; +}; + + +struct config_req_msg_t { + INT32 code; /* 1 */ + INT32 length; +}; + + +struct status_req_msg_t { + INT32 code; /* 2 */ + INT32 length; +}; + + +struct read_req_msg_t { + INT32 code; /* 3 */ + INT32 length; + INT32 memory_space; + ADDR32 address; + INT32 byte_count; +}; + + +struct write_req_msg_t { + INT32 code; /* 4 */ + INT32 length; + INT32 memory_space; + ADDR32 address; + INT32 byte_count; + BYTE data[DUMMY]; +}; + + +struct write_r_msg_t { + INT32 code; /* 4 */ + INT32 length; + INT32 memory_space; + ADDR32 address; + INT32 byte_count; + INT32 data[DUMMY]; +}; + + +struct bkpt_set_msg_t { + INT32 code; /* 5 */ + INT32 length; + INT32 memory_space; + ADDR32 bkpt_addr; + INT32 pass_count; + INT32 bkpt_type; +}; + + +struct bkpt_rm_msg_t { + INT32 code; /* 6 */ + INT32 length; + INT32 memory_space; + ADDR32 bkpt_addr; +}; + + +struct bkpt_stat_msg_t { + INT32 code; /* 7 */ + INT32 length; + INT32 memory_space; + ADDR32 bkpt_addr; +}; + + +struct copy_msg_t { + INT32 code; /* 8 */ + INT32 length; + INT32 source_space; + ADDR32 source_addr; + INT32 dest_space; + ADDR32 dest_addr; + INT32 byte_count; +}; + + +struct fill_msg_t { + INT32 code; /* 9 */ + INT32 length; + INT32 memory_space; + ADDR32 start_addr; + INT32 fill_count; + INT32 byte_count; + BYTE fill_data[DUMMY]; +}; + + +struct init_msg_t { + INT32 code; /* 10 */ + INT32 length; + ADDR32 text_start; + ADDR32 text_end; + ADDR32 data_start; + ADDR32 data_end; + ADDR32 entry_point; + INT32 mem_stack_size; + INT32 reg_stack_size; + ADDR32 arg_start; + INT32 os_control; +}; + + +struct go_msg_t { + INT32 code; /* 11 */ + INT32 length; +}; + + +struct step_msg_t { + INT32 code; /* 12 */ + INT32 length; + INT32 count; +}; + + +struct break_msg_t { + INT32 code; /* 13 */ + INT32 length; +}; + + +struct hif_call_rtn_msg_t { + INT32 code; /* 64 */ + INT32 length; + INT32 service_number; + INT32 gr121; + INT32 gr96; + INT32 gr97; +}; + + +struct channel0_msg_t { + INT32 code; /* 65 */ + INT32 length; + BYTE data; +}; + + +struct channel1_ack_msg_t { + INT32 code; /* 66 */ + INT32 length; +}; + + +/* +** Target to host messages +*/ + + +struct reset_ack_msg_t { + INT32 code; /* 32 */ + INT32 length; +}; + + +struct config_msg_t { + INT32 code; /* 33 */ + INT32 length; + INT32 processor_id; + INT32 version; + ADDR32 I_mem_start; + INT32 I_mem_size; + ADDR32 D_mem_start; + INT32 D_mem_size; + ADDR32 ROM_start; + INT32 ROM_size; + INT32 max_msg_size; + INT32 max_bkpts; + INT32 coprocessor; + INT32 reserved; +}; + + +struct status_msg_t { + INT32 code; /* 34 */ + INT32 length; + INT32 msgs_sent; + INT32 msgs_received; + INT32 errors; + INT32 bkpts_hit; + INT32 bkpts_free; + INT32 traps; + INT32 fills; + INT32 spills; + INT32 cycles; + INT32 reserved; +}; + + +struct read_ack_msg_t { + INT32 code; /* 35 */ + INT32 length; + INT32 memory_space; + ADDR32 address; + INT32 byte_count; + BYTE data[DUMMY]; +}; + +struct read_r_ack_msg_t { + INT32 code; /* 35 */ + INT32 length; + INT32 memory_space; + ADDR32 address; + INT32 byte_count; + INT32 data[DUMMY]; +}; + + +struct write_ack_msg_t { + INT32 code; /* 36 */ + INT32 length; + INT32 memory_space; + ADDR32 address; + INT32 byte_count; +}; + + +struct bkpt_set_ack_msg_t { + INT32 code; /* 37 */ + INT32 length; + INT32 memory_space; + ADDR32 address; + INT32 pass_count; + INT32 bkpt_type; +}; + + +struct bkpt_rm_ack_msg_t { + INT32 code; /* 38 */ + INT32 length; + INT32 memory_space; + ADDR32 address; +}; + + +struct bkpt_stat_ack_msg_t { + INT32 code; /* 39 */ + INT32 length; + INT32 memory_space; + ADDR32 address; + INT32 pass_count; + INT32 bkpt_type; +}; + + +struct copy_ack_msg_t { + INT32 code; /* 40 */ + INT32 length; + INT32 source_space; + ADDR32 source_addr; + INT32 dest_space; + ADDR32 dest_addr; + INT32 byte_count; +}; + + +struct fill_ack_msg_t { + INT32 code; /* 41 */ + INT32 length; + INT32 memory_space; + ADDR32 start_addr; + INT32 fill_count; + INT32 byte_count; +}; + + +struct init_ack_msg_t { + INT32 code; /* 42 */ + INT32 length; +}; + + +struct halt_msg_t { + INT32 code; /* 43 */ + INT32 length; + INT32 memory_space; + ADDR32 pc0; + ADDR32 pc1; + INT32 trap_number; +}; + + +struct error_msg_t { + INT32 code; /* 63 */ + INT32 length; + INT32 error_code; + INT32 memory_space; + ADDR32 address; +}; + + +struct hif_call_msg_t { + INT32 code; /* 96 */ + INT32 length; + INT32 service_number; + INT32 lr2; + INT32 lr3; + INT32 lr4; +}; + + +struct channel0_ack_msg_t { + INT32 code; /* 97 */ + INT32 length; +}; + + +struct channel1_msg_t { + INT32 code; /* 98 */ + INT32 length; + BYTE data[DUMMY]; +}; + + + +/* +** Union all of the message types together +*/ + +union msg_t { + struct generic_msg_t generic_msg; + struct generic_int32_msg_t generic_int32_msg; + + struct reset_msg_t reset_msg; + struct config_req_msg_t config_req_msg; + struct status_req_msg_t status_req_msg; + struct read_req_msg_t read_req_msg; + struct write_req_msg_t write_req_msg; + struct write_r_msg_t write_r_msg; + struct bkpt_set_msg_t bkpt_set_msg; + struct bkpt_rm_msg_t bkpt_rm_msg; + struct bkpt_stat_msg_t bkpt_stat_msg; + struct copy_msg_t copy_msg; + struct fill_msg_t fill_msg; + struct init_msg_t init_msg; + struct go_msg_t go_msg; + struct step_msg_t step_msg; + struct break_msg_t break_msg; + + struct hif_call_rtn_msg_t hif_call_rtn_msg; + struct channel0_msg_t channel0_msg; + struct channel1_ack_msg_t channel1_ack_msg; + + struct reset_ack_msg_t reset_ack_msg; + struct config_msg_t config_msg; + struct status_msg_t status_msg; + struct read_ack_msg_t read_ack_msg; + struct read_r_ack_msg_t read_r_ack_msg; + struct write_ack_msg_t write_ack_msg; + struct bkpt_set_ack_msg_t bkpt_set_ack_msg; + struct bkpt_rm_ack_msg_t bkpt_rm_ack_msg; + struct bkpt_stat_ack_msg_t bkpt_stat_ack_msg; + struct copy_ack_msg_t copy_ack_msg; + struct fill_ack_msg_t fill_ack_msg; + struct init_ack_msg_t init_ack_msg; + struct halt_msg_t halt_msg; + + struct error_msg_t error_msg; + + struct hif_call_msg_t hif_call_msg; + struct channel0_ack_msg_t channel0_ack_msg; + struct channel1_msg_t channel1_msg; +}; diff --git a/gdb/remote-adapt.c b/gdb/remote-adapt.c new file mode 100644 index 00000000000..7900d4685d9 --- /dev/null +++ b/gdb/remote-adapt.c @@ -0,0 +1,1447 @@ +/* Remote debugging interface for AMD 290*0 Adapt Monitor Version 2.1d18. + Copyright 1990, 1991 Free Software Foundation, Inc. + Contributed by David Wood at New York University (wood@lab.ultra.nyu.edu). + Adapted from work done at Cygnus Support in remote-eb.c. + +This file is part of GDB. + +This program is free software; you can redistribute it and/or modify +it under the terms of the GNU General Public License as published by +the Free Software Foundation; either version 2 of the License, or +(at your option) any later version. + +This program is distributed in the hope that it will be useful, +but WITHOUT ANY WARRANTY; without even the implied warranty of +MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the +GNU General Public License for more details. + +You should have received a copy of the GNU General Public License +along with this program; if not, write to the Free Software +Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. */ + +/* This is like remote.c but is for an esoteric situation-- + having a 29k board attached to an Adapt inline monitor. + The monitor is connected via serial line to a unix machine + running gdb. + + 3/91 - developed on Sun3 OS 4.1, by David Wood + o - I can't get binary coff to load. + o - I can't get 19200 baud rate to work. + 7/91 o - Freeze mode tracing can be done on a 29050. */ + +#include +#include +#include "defs.h" +#include "tm.h" +#include "param-no-tm.h" +#include "inferior.h" +#include "wait.h" +#include "value.h" +#include +#include +#include +#include +#include "terminal.h" +#include "target.h" +#include "gdbcore.h" + +/* External data declarations */ +extern int stop_soon_quietly; /* for wait_for_inferior */ + +/* External function declarations */ +extern struct value *call_function_by_hand(); + +/* Forward data declarations */ +extern struct target_ops adapt_ops; /* Forward declaration */ + +/* Forward function declarations */ +static void adapt_fetch_registers (); +static int adapt_store_registers (); +static void adapt_close (); + +/* + * Processor types. It is assumed that the adapt has the correct + * ROM for the given processor. + */ +#define TYPE_UNKNOWN 0 +#define TYPE_A29000 1 +#define TYPE_A29030 2 +#define TYPE_A29050 3 +static char *processor_name[] = { "Unknown", "A29000", "A29030", "A29050" }; +static int processor_type=TYPE_UNKNOWN; + +#define FREEZE_MODE (read_register(CPS_REGNUM) && 0x400) +#define USE_SHADOW_PC ((processor_type == TYPE_A29050) && FREEZE_MODE) + + +/* #define DEBUG /* */ +#ifdef DEBUG +# define DENTER(NAME) (printf_filtered("Entering %s\n",NAME), fflush(stdout)) +# define DEXIT(NAME) (printf_filtered("Exiting %s\n",NAME), fflush(stdout)) +#else +# define DENTER(NAME) +# define DEXIT(NAME) +#endif + +/* Can't seem to get binary coff working */ +#define ASCII_COFF /* Adapt will be downloaded with ascii coff */ + +#define LOG_FILE "adapt.log" +#if defined (LOG_FILE) +FILE *log_file=NULL; +#endif + +static int timeout = 5; +static char *dev_name; + +/* Descriptor for I/O to remote machine. Initialize it to -1 so that + adapt_open knows that we don't have a file open when the program + starts. */ +int adapt_desc = -1; + +/* stream which is fdopen'd from adapt_desc. Only valid when + adapt_desc != -1. */ +FILE *adapt_stream; + +#define ON 1 +#define OFF 0 +static void +rawmode(desc, turnon) +int desc; +int turnon; +{ + TERMINAL sg; + + if (desc < 0) + return; + + ioctl (desc, TIOCGETP, &sg); + + if (turnon) { +#ifdef HAVE_TERMIO + sg.c_lflag &= ~(ICANON); +#else + sg.sg_flags |= RAW; +#endif + } else { +#ifdef HAVE_TERMIO + sg.c_lflag |= ICANON; +#else + sg.sg_flags &= ~(RAW); +#endif + } + ioctl (desc, TIOCSETP, &sg); +} + +/* Suck up all the input from the adapt */ +slurp_input() +{ + char buf[8]; + +#ifdef HAVE_TERMIO + /* termio does the timeout for us. */ + while (read (adapt_desc, buf, 8) > 0); +#else + alarm (timeout); + while (read (adapt_desc, buf, 8) > 0); + alarm (0); +#endif +} + +/* Read a character from the remote system, doing all the fancy + timeout stuff. */ +static int +readchar () +{ + char buf; + + buf = '\0'; +#ifdef HAVE_TERMIO + /* termio does the timeout for us. */ + read (adapt_desc, &buf, 1); +#else + alarm (timeout); + if (read (adapt_desc, &buf, 1) < 0) + { + if (errno == EINTR) + error ("Timeout reading from remote system."); + else + perror_with_name ("remote"); + } + alarm (0); +#endif + + if (buf == '\0') + error ("Timeout reading from remote system."); +#if defined (LOG_FILE) + putc (buf & 0x7f, log_file); +#endif + return buf & 0x7f; +} + +/* Keep discarding input from the remote system, until STRING is found. + Let the user break out immediately. */ +static void +expect (string) + char *string; +{ + char *p = string; + + fflush(adapt_stream); + immediate_quit = 1; + while (1) + { + if (readchar() == *p) + { + p++; + if (*p == '\0') + { + immediate_quit = 0; + return; + } + } + else + p = string; + } +} + +/* Keep discarding input until we see the adapt prompt. + + The convention for dealing with the prompt is that you + o give your command + o *then* wait for the prompt. + + Thus the last thing that a procedure does with the serial line + will be an expect_prompt(). Exception: adapt_resume does not + wait for the prompt, because the terminal is being handed over + to the inferior. However, the next thing which happens after that + is a adapt_wait which does wait for the prompt. + Note that this includes abnormal exit, e.g. error(). This is + necessary to prevent getting into states from which we can't + recover. */ +static void +expect_prompt () +{ +#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 + fflush(adapt_stream); + expect ("\n# "); +} + +/* Get a hex digit from the remote system & return its value. + If ignore_space is nonzero, ignore spaces (not newline, tab, etc). */ +static int +get_hex_digit (ignore_space) + int ignore_space; +{ + int ch; + while (1) + { + ch = readchar (); + if (ch >= '0' && ch <= '9') + return ch - '0'; + else if (ch >= 'A' && ch <= 'F') + return ch - 'A' + 10; + else if (ch >= 'a' && ch <= 'f') + return ch - 'a' + 10; + else if (ch == ' ' && ignore_space) + ; + else + { + expect_prompt (); + error ("Invalid hex digit from remote system."); + } + } +} + +/* Get a byte from adapt_desc and put it in *BYT. Accept any number + leading spaces. */ +static void +get_hex_byte (byt) + char *byt; +{ + int val; + + val = get_hex_digit (1) << 4; + val |= get_hex_digit (0); + *byt = val; +} + +/* Read a 32-bit hex word from the adapt, preceded by a space */ +static long +get_hex_word() +{ + long val; + int j; + + val = 0; + for (j = 0; j < 8; j++) + val = (val << 4) + get_hex_digit (j == 0); + return val; +} +/* Get N 32-bit hex words from remote, each preceded by a space + and put them in registers starting at REGNO. */ +static void +get_hex_regs (n, regno) + int n; + int regno; +{ + long val; + while (n--) { + val = get_hex_word(); + supply_register(regno++,&val); + } +} +/* Called when SIGALRM signal sent due to alarm() timeout. */ +#ifndef HAVE_TERMIO + +#ifndef __STDC__ +# ifndef volatile +# define volatile /**/ +# endif +#endif +volatile int n_alarms; + +void +adapt_timer () +{ +#if 0 + if (kiodebug) + printf ("adapt_timer called\n"); +#endif + n_alarms++; +} +#endif + +/* 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 adapt_wait should just return + SIGTRAP without actually waiting for anything. */ + +static int need_artificial_trap = 0; + +void +adapt_kill(arg,from_tty) +char *arg; +int from_tty; +{ + DENTER("adapt_kill()"); + fprintf (adapt_stream, "K"); + fprintf (adapt_stream, "\r"); + expect_prompt (); + DEXIT("adapt_kill()"); +} +/* + * Download a file specified in 'args', to the adapt. + * FIXME: Assumes the file to download is a binary coff file. + */ +static void +adapt_load(args,fromtty) +char *args; +int fromtty; +{ + FILE *fp; + int n; + char buffer[1024]; + + DENTER("adapt_load()"); + if (!adapt_stream) { + printf_filtered("Adapt not open. Use 'target' command to open adapt\n"); + return; + } + + /* OK, now read in the file. Y=read, C=COFF, T=dTe port + 0=start address. */ + +#ifdef ASCII_COFF /* Ascii coff */ + fprintf (adapt_stream, "YA T,0\r"); + fflush(adapt_stream); /* Just in case */ + /* FIXME: should check args for only 1 argument */ + sprintf(buffer,"cat %s | btoa > /tmp/#adapt-btoa",args); + system(buffer); + fp = fopen("/tmp/#adapt-btoa","r"); + rawmode(adapt_desc,OFF); + while (n=fread(buffer,1,1024,fp)) { + do { n -= write(adapt_desc,buffer,n); } while (n>0); + if (n<0) { perror("writing ascii coff"); break; } + } + fclose(fp); + rawmode(adapt_desc,ON); + system("rm /tmp/#adapt-btoa"); +#else /* Binary coff - can't get it to work .*/ + fprintf (adapt_stream, "YC T,0\r"); + fflush(adapt_stream); /* Just in case */ + if (!(fp = fopen(args,"r"))) { + printf_filtered("Can't open %s\n",args); + return; + } + while (n=fread(buffer,1,512,fp)) { + do { n -= write(adapt_desc,buffer,n); } while (n>0); + if (n<0) { perror("writing ascii coff"); break; } + } + fclose(fp); +#endif + expect_prompt (); /* Skip garbage that comes out */ + fprintf (adapt_stream, "\r"); + expect_prompt (); + DEXIT("adapt_load()"); +} + +/* This is called not only when we first attach, but also when the + user types "run" after having attached. */ +void +adapt_create_inferior (execfile, args, env) + char *execfile; + char *args; + char **env; +{ + int entry_pt; + + DENTER("adapt_create_inferior()"); + + if (args && *args) + error ("Can't pass arguments to remote adapt process."); + + if (execfile == 0 || exec_bfd == 0) + error ("No exec file specified"); + + entry_pt = (int) bfd_get_start_address (exec_bfd); + + if (adapt_stream) { + adapt_kill(NULL,NULL); + adapt_clear_breakpoints(); + init_wait_for_inferior (); + /* Clear the input because what the adapt sends back is different + * depending on whether it was running or not. + */ + slurp_input(); /* After this there should be a prompt */ + fprintf(adapt_stream,"\r"); + expect_prompt(); + printf_filtered("Do you want to download '%s' (y/n)? [y] : ",prog_name); + { + char buffer[10]; + gets(buffer); + if (*buffer != 'n') { + adapt_load(prog_name,0); + } + } + +#ifdef NOTDEF + /* Set the PC and wait for a go/cont */ + fprintf (adapt_stream, "G %x,N\r",entry_pt); + printf_filtered("Now use the 'continue' command to start.\n"); + expect_prompt (); +#else + insert_breakpoints (); /* Needed to get correct instruction in cache */ + proceed(entry_pt, -1, 0); +#endif + + } else { + printf_filtered("Adapt not open yet.\n"); + } + DEXIT("adapt_create_inferior()"); +} + +/* 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 */ +} + + +/* Open a connection to a remote debugger. + NAME is the filename used for communication, then a space, + then the baud rate. + */ + +static int baudrate = 9600; +static void +adapt_open (name, from_tty) + char *name; + int from_tty; +{ + TERMINAL sg; + unsigned int prl; + char *p; + + DENTER("adapt_open()"); + /* Find the first whitespace character, it separates dev_name from + prog_name. */ + if (name == 0) + goto erroid; + + for (p = name; + *p != '\0' && !isspace (*p); p++) + ; + if (*p == '\0') +erroid: + error ("\ +Please include the name of the device for the serial port,\n\ +the baud rate, and the name of the program to run on the remote system."); + dev_name = (char*)malloc(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)); + + adapt_close (0); + + adapt_desc = open (dev_name, O_RDWR); + if (adapt_desc < 0) + perror_with_name (dev_name); + ioctl (adapt_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 | ANYP; + sg.sg_flags &= ~ECHO; +#endif + + ioctl (adapt_desc, TIOCSETP, &sg); + adapt_stream = fdopen (adapt_desc, "r+"); + + push_target (&adapt_ops); + /* start_remote (); /* Initialize gdb process mechanisms */ + + +#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 ("adapt_open: error in siginterrupt"); +#endif + + /* Set up read timeout timer. */ + if ((void (*)) signal (SIGALRM, adapt_timer) == (void (*)) -1) + perror ("adapt_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 + + /* Put this port into NORMAL mode, send the 'normal' character */ + write(adapt_desc, "", 1); /* Control A */ + write(adapt_desc, "\r", 1); + expect_prompt (); + + /* Hello? Are you there? */ + write (adapt_desc, "\r", 1); + + expect_prompt (); + + /* Clear any break points */ + adapt_clear_breakpoints(); + + /* Determine the processor revision level */ + prl = (unsigned int)read_register(CFG_REGNUM) >> 24; + if (prl == 0x03) { + processor_type = TYPE_A29000; + } else if ((prl&0xf0) == 0x40) { /* 29030 = 0x4* */ + processor_type = TYPE_A29030; + fprintf_filtered(stderr,"WARNING: debugging of A29030 not tested.\n"); + } else if ((prl&0xf0) == 0x20) { /* 29050 = 0x2* */ + processor_type = TYPE_A29050; + fprintf_filtered(stderr,"WARNING: debugging of A29050 not tested.\n"); + } else { + processor_type = TYPE_UNKNOWN; + fprintf_filtered(stderr,"WARNING: processor type unknown.\n"); + } + + /* Print out some stuff, letting the user now what's going on */ + printf_filtered("Remote debugging on an %s connect to an Adapt via %s.\n", + processor_name[processor_type],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 != TYPE_A29050) { + fprintf_filtered(stderr, + "Freeze-mode debugging not available, and can only be done on an A29050.\n"); + } + DEXIT("adapt_open()"); +} + +/* Close out all files and local state before this target loses control. */ + +static void +adapt_close (quitting) + int quitting; +{ + + DENTER("adapt_close()"); + + /* Clear any break points */ + adapt_clear_breakpoints(); + + /* Put this port back into REMOTE mode */ + if (adapt_stream) { + fflush(adapt_stream); + sleep(1); /* Let any output make it all the way back */ + write(adapt_desc, "R\r", 2); + } + + /* Due to a bug in Unix, fclose closes not only the stdio stream, + but also the file descriptor. So we don't actually close + adapt_desc. */ + if (adapt_stream) + fclose (adapt_stream); /* This also closes adapt_desc */ + if (adapt_desc >= 0) + /* close (adapt_desc); */ + + /* Do not try to close adapt_desc again, later in the program. */ + adapt_stream = NULL; + adapt_desc = -1; + +#if defined (LOG_FILE) + if (log_file) { + if (ferror (log_file)) + printf_filtered ("Error writing log file.\n"); + if (fclose (log_file) != 0) + printf_filtered ("Error closing log file.\n"); + log_file = NULL; + } +#endif + DEXIT("adapt_close()"); +} + +/* Attach to the target that is already loaded and possibly running */ +static void +adapt_attach (args, from_tty) + char *args; + int from_tty; +{ + + DENTER("adapt_attach()"); + if (from_tty) + printf_filtered ("Attaching to remote program %s.\n", prog_name); + + /* push_target(&adapt_ops); /* This done in adapt_open() */ + + mark_breakpoints_out (); + + /* Send the adapt a kill. It is ok if it is not already running */ + fprintf(adapt_stream, "K\r"); fflush(adapt_stream); + expect_prompt(); /* Slurp the echo */ + + /* We will get a task spawn event immediately. */ + init_wait_for_inferior (); + clear_proceed_status (); + stop_soon_quietly = 1; + wait_for_inferior (); + stop_soon_quietly = 0; + normal_stop (); + DEXIT("adapt_attach()"); +} + + +/* Terminate the open connection to the remote debugger. + Use this when you want to detach and do something else + with your gdb. */ +void +adapt_detach (args,from_tty) + char *args; + int from_tty; +{ + DENTER("adapt_detach()"); + if (adapt_stream) { /* Send it on its way (tell it to continue) */ + adapt_clear_breakpoints(); + fprintf(adapt_stream,"G\r"); + } + + pop_target(); /* calls adapt_close to do the real work */ + if (from_tty) + printf_filtered ("Ending remote %s debugging\n", target_shortname); + DEXIT("adapt_detach()"); +} + +/* Tell the remote machine to resume. */ + +void +adapt_resume (step, sig) + int step, sig; +{ + DENTER("adapt_resume()"); + if (step) + { + write (adapt_desc, "t 1,s\r", 6); + /* Wait for the echo. */ + expect ("t 1,s\r\n"); + /* Then comes a line containing the instruction we stepped to. */ + expect ("@"); + /* Then we get the prompt. */ + expect_prompt (); + + /* Force the next adapt_wait to return a trap. Not doing anything + about I/O from the target means that the user has to type + "continue" to see any. FIXME, this should be fixed. */ + need_artificial_trap = 1; + } + else + { + write (adapt_desc, "G\r", 2); + /* Swallow the echo. */ + expect_prompt(); + } + DEXIT("adapt_resume()"); +} + +/* Wait until the remote machine stops, then return, + storing status in STATUS just as `wait' would. */ + +int +adapt_wait (status) + WAITTYPE *status; +{ + /* Strings to look for. '?' means match any single character. + Note that with the algorithm we use, the initial character + of the string cannot recur in the string, or we will not + find some cases of the string in the input. */ + + static char bpt[] = "@"; + /* It would be tempting to look for "\n[__exit + 0x8]\n" + but that requires loading symbols with "yc i" and even if + we did do that we don't know that the file has symbols. */ + static char exitmsg[] = "@????????I JMPTI GR121,LR0"; + char *bp = bpt; + char *ep = exitmsg; + + /* Large enough for either sizeof (bpt) or sizeof (exitmsg) chars. */ + char swallowed[50]; + /* Current position in swallowed. */ + char *swallowed_p = swallowed; + + int ch; + int ch_handled; + int old_timeout = timeout; + int old_immediate_quit = immediate_quit; + + DENTER("adapt_wait()"); + + WSETEXIT ((*status), 0); + + if (need_artificial_trap != 0) + { + WSETSTOP ((*status), SIGTRAP); + need_artificial_trap--; + return 0; + } + + timeout = 0; /* Don't time out -- user program is running. */ + immediate_quit = 1; /* Helps ability to QUIT */ + while (1) { + QUIT; /* Let user quit and leave process running */ + ch_handled = 0; + ch = readchar (); + if (ch == *bp) { + bp++; + if (*bp == '\0') + break; + ch_handled = 1; + + *swallowed_p++ = ch; + } else + bp = bpt; + if (ch == *ep || *ep == '?') { + ep++; + if (*ep == '\0') + break; + + if (!ch_handled) + *swallowed_p++ = ch; + ch_handled = 1; + } else + ep = exitmsg; + if (!ch_handled) { + char *p; + /* Print out any characters which have been swallowed. */ + for (p = swallowed; p < swallowed_p; ++p) + putc (*p, stdout); + swallowed_p = swallowed; + putc (ch, stdout); + } + } + expect_prompt (); + if (*bp== '\0') + WSETSTOP ((*status), SIGTRAP); + else + WSETEXIT ((*status), 0); + timeout = old_timeout; + immediate_quit = old_immediate_quit; + DEXIT("adapt_wait()"); + return 0; +} + +/* Return the name of register number REGNO + in the form input and output by adapt. + + Returns a pointer to a static buffer containing the answer. */ +static char * +get_reg_name (regno) + int regno; +{ + static char buf[80]; + if (regno >= GR96_REGNUM && regno < GR96_REGNUM + 32 ) + sprintf (buf, "GR%03d", regno - GR96_REGNUM + 96); +#if defined(GR64_REGNUM) + else if (regno >= GR64_REGNUM && regno < GR64_REGNUM + 32 ) + sprintf (buf, "GR%03d", regno - GR64_REGNUM + 64); +#endif + else if (regno >= LR0_REGNUM && regno < LR0_REGNUM + 128) + sprintf (buf, "LR%03d", regno - LR0_REGNUM); + else if (regno == Q_REGNUM) + strcpy (buf, "SR131"); + else if (regno >= BP_REGNUM && regno <= CR_REGNUM) + sprintf (buf, "SR%03d", regno - BP_REGNUM + 133); + else if (regno == ALU_REGNUM) + strcpy (buf, "SR132"); + else if (regno >= IPC_REGNUM && regno <= IPB_REGNUM) + sprintf (buf, "SR%03d", regno - IPC_REGNUM + 128); + else if (regno >= VAB_REGNUM && regno <= LRU_REGNUM) { + /* When a 29050 is in freeze-mode, read shadow pcs instead */ + if ((regno >= NPC_REGNUM && regno <= PC2_REGNUM) && USE_SHADOW_PC) + sprintf (buf, "SR%03d", regno - NPC_REGNUM + 20); + else + sprintf (buf, "SR%03d", regno - VAB_REGNUM); + } + else if (regno == GR1_REGNUM) + strcpy (buf, "GR001"); + return buf; +} + +/* Read the remote registers. */ + +static void +adapt_fetch_registers () +{ + int reg_index; + int regnum_index; + char tempbuf[10]; + int sreg_buf[16]; + int i,j; + + DENTER("adapt_fetch_registers()"); + +/* + * Global registers + */ +#if defined(GR64_REGNUM) + write (adapt_desc, "dw gr64,gr95\r", 13); + for (reg_index = 64, regnum_index = GR64_REGNUM; + reg_index < 96; + reg_index += 4, regnum_index += 4) + { + sprintf (tempbuf, "GR%03d ", reg_index); + expect (tempbuf); + get_hex_regs (4, regnum_index); + expect ("\n"); + } +#endif + write (adapt_desc, "dw gr96,gr127\r", 14); + for (reg_index = 96, regnum_index = GR96_REGNUM; + reg_index < 128; + reg_index += 4, regnum_index += 4) + { + sprintf (tempbuf, "GR%03d ", reg_index); + expect (tempbuf); + get_hex_regs (4, regnum_index); + expect ("\n"); + } + +/* + * Local registers + */ + for (i = 0; i < 128; i += 32) + { + /* The PC has a tendency to hang if we get these + all in one fell swoop ("dw lr0,lr127"). */ + sprintf (tempbuf, "dw lr%d\r", i); + write (adapt_desc, tempbuf, strlen (tempbuf)); + for (reg_index = i, regnum_index = LR0_REGNUM + i; + reg_index < i + 32; + reg_index += 4, regnum_index += 4) + { + sprintf (tempbuf, "LR%03d ", reg_index); + expect (tempbuf); + get_hex_regs (4, regnum_index); + expect ("\n"); + } + } + +/* + * Special registers + */ + sprintf (tempbuf, "dw sr0\r"); + write (adapt_desc, tempbuf, strlen (tempbuf)); + for (i=0 ; i<4 ; i++) { /* SR0 - SR14 */ + sprintf (tempbuf, "SR%3d",i*4); + expect(tempbuf); + for (j=0 ; j < (i==3 ? 3 : 4) ; j++) + sreg_buf[i*4 + j] = get_hex_word(); + } + expect_prompt(); + /* + * Read the pcs individually if we are in freeze mode. + * See get_reg_name(), it translates the register names for the pcs to + * the names of the shadow pcs. + */ + if (USE_SHADOW_PC) { + sreg_buf[10] = read_register(NPC_REGNUM); /* pc0 */ + sreg_buf[11] = read_register(PC_REGNUM); /* pc1 */ + sreg_buf[12] = read_register(PC2_REGNUM); /* pc2 */ + } + for (i=0 ; i<14 ; i++) /* Supply vab -> lru */ + supply_register(VAB_REGNUM+i,&sreg_buf[i]); + sprintf (tempbuf, "dw sr128\r"); + write (adapt_desc, tempbuf, strlen (tempbuf)); + for (i=0 ; i<2 ; i++) { /* SR128 - SR135 */ + sprintf (tempbuf, "SR%3d",128 + i*4); + expect(tempbuf); + for (j=0 ; j<4 ; j++) + sreg_buf[i*4 + j] = get_hex_word(); + } + expect_prompt(); + supply_register(IPC_REGNUM,&sreg_buf[0]); + supply_register(IPA_REGNUM,&sreg_buf[1]); + supply_register(IPB_REGNUM,&sreg_buf[2]); + supply_register(Q_REGNUM, &sreg_buf[3]); + /* Skip ALU */ + supply_register(BP_REGNUM, &sreg_buf[5]); + supply_register(FC_REGNUM, &sreg_buf[6]); + supply_register(CR_REGNUM, &sreg_buf[7]); + + /* There doesn't seem to be any way to get these. */ + { + int val = -1; + supply_register (FPE_REGNUM, &val); + supply_register (INT_REGNUM, &val); + supply_register (FPS_REGNUM, &val); + supply_register (EXO_REGNUM, &val); + } + + write (adapt_desc, "dw gr1,gr1\r", 11); + expect ("GR001 "); + get_hex_regs (1, GR1_REGNUM); + expect_prompt (); + + DEXIT("adapt_fetch_registers()"); +} + +/* Fetch register REGNO, or all registers if REGNO is -1. + */ +static void +adapt_fetch_register (regno) + int regno; +{ + DENTER("adapt_fetch_register()"); + if (regno == -1) + adapt_fetch_registers (); + else + { + char *name = get_reg_name (regno); + fprintf (adapt_stream, "dw %s,%s\r", name, name); + expect (name); + expect (" "); + get_hex_regs (1, regno); + expect_prompt (); + } + DEXIT("adapt_fetch_register()"); +} + +/* Store the remote registers from the contents of the block REGS. */ + +static int +adapt_store_registers () +{ + int i, j; + + DENTER("adapt_store_registers()"); + fprintf (adapt_stream, "s gr1,%x\r", read_register (GR1_REGNUM)); + expect_prompt (); + +#if defined(GR64_REGNUM) + for (j = 0; j < 32; j += 16) + { + fprintf (adapt_stream, "s gr%d,", j + 64); + for (i = 0; i < 15; ++i) + fprintf (adapt_stream, "%x,", read_register (GR64_REGNUM + j + i)); + fprintf (adapt_stream, "%x\r", read_register (GR64_REGNUM + j + 15)); + expect_prompt (); + } +#endif + for (j = 0; j < 32; j += 16) + { + fprintf (adapt_stream, "s gr%d,", j + 96); + for (i = 0; i < 15; ++i) + fprintf (adapt_stream, "%x,", read_register (GR96_REGNUM + j + i)); + fprintf (adapt_stream, "%x\r", read_register (GR96_REGNUM + j + 15)); + expect_prompt (); + } + + for (j = 0; j < 128; j += 16) + { + fprintf (adapt_stream, "s lr%d,", j); + for (i = 0; i < 15; ++i) + fprintf (adapt_stream, "%x,", read_register (LR0_REGNUM + j + i)); + fprintf (adapt_stream, "%x\r", read_register (LR0_REGNUM + j + 15)); + expect_prompt (); + } + + fprintf (adapt_stream, "s sr128,%x,%x,%x\r", read_register (IPC_REGNUM), + read_register (IPA_REGNUM), read_register (IPB_REGNUM)); + expect_prompt (); + fprintf (adapt_stream, "s sr133,%x,%x,%x\r", read_register (BP_REGNUM), + read_register (FC_REGNUM), read_register (CR_REGNUM)); + expect_prompt (); + fprintf (adapt_stream, "s sr131,%x\r", read_register (Q_REGNUM)); + expect_prompt (); + fprintf (adapt_stream, "s sr0,"); + for (i=0 ; i<7 ; ++i) + fprintf (adapt_stream, "%x,", read_register (VAB_REGNUM + i)); + expect_prompt (); + fprintf (adapt_stream, "s sr7,"); + for (i=7; i<14 ; ++i) + fprintf (adapt_stream, "%x,", read_register (VAB_REGNUM + i)); + expect_prompt (); +} + +/* Store register REGNO, or all if REGNO == -1. + Return errno value. */ +int +adapt_store_register (regno) + int regno; +{ + /* printf("adapt_store_register() called.\n"); fflush(stdout); /* */ + if (regno == -1) + adapt_store_registers (); + else + { + char *name = get_reg_name (regno); + fprintf (adapt_stream, "s %s,%x\r", name, read_register (regno)); + /* 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. */ + if (regno == GR1_REGNUM) + registers_changed (); + expect_prompt (); + } + DEXIT("adapt_store_registers()"); + return 0; +} + +/* Get ready to modify the registers array. On machines which store + individual registers, this doesn't need to do anything. On machines + which store all the registers in one fell swoop, this makes sure + that registers contains all the registers from the program being + debugged. */ + +void +adapt_prepare_to_store () +{ + /* Do nothing, since we can store individual regs */ +} + +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 */ + 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 +} + + +/* FIXME! Merge these two. */ +int +adapt_xfer_inferior_memory (memaddr, myaddr, len, write) + CORE_ADDR memaddr; + char *myaddr; + int len; + int write; +{ + + memaddr = translate_addr(memaddr); + + if (write) + return adapt_write_inferior_memory (memaddr, myaddr, len); + else + return adapt_read_inferior_memory (memaddr, myaddr, len); +} + +void +adapt_files_info () +{ + printf_filtered("\tAttached to %s at %d baud and running program %s\n", + dev_name, baudrate, prog_name); + printf_filtered("\ton an %s processor.\n", processor_name[processor_type]); +} + +/* Copy LEN bytes of data from debugger memory at MYADDR + to inferior's memory at MEMADDR. Returns errno value. + * sb/sh instructions don't work on unaligned addresses, when TU=1. + */ +int +adapt_write_inferior_memory (memaddr, myaddr, len) + CORE_ADDR memaddr; + char *myaddr; + int len; +{ + int i; + unsigned int cps; + + /* DENTER("adapt_write_inferior_memory()"); */ + +/* Turn TU bit off so we can do 'sb' commands */ + cps = read_register(CPS_REGNUM); + if (cps & 0x00000800) + write_register(CPS_REGNUM,cps&~(0x00000800)); + + for (i = 0; i < len; i++) + { + if ((i % 16) == 0) + fprintf (adapt_stream, "sb %x,", memaddr + i); + if ((i % 16) == 15 || i == len - 1) + { + fprintf (adapt_stream, "%x\r", ((unsigned char *)myaddr)[i]); + expect_prompt (); + } + else + fprintf (adapt_stream, "%x,", ((unsigned char *)myaddr)[i]); + } + /* Restore the old value of cps if the TU bit was on */ + if (cps & 0x00000800) + write_register(CPS_REGNUM,cps); + /* DEXIT("adapt_write_inferior_memory()"); */ + return len; +} + +/* Read LEN bytes from inferior memory at MEMADDR. Put the result + at debugger address MYADDR. Returns errno value. */ +int +adapt_read_inferior_memory(memaddr, myaddr, len) + CORE_ADDR memaddr; + char *myaddr; + int len; +{ + int i; + + /* Number of bytes read so far. */ + int count; + + /* Starting address of this pass. */ + unsigned long startaddr; + + /* Number of bytes to read in this pass. */ + int len_this_pass; + + /* Note that this code works correctly if startaddr is just less + than UINT_MAX (well, really CORE_ADDR_MAX if there was such a + thing). That is, something like + adapt_read_bytes (CORE_ADDR_MAX - 4, foo, 4) + works--it never adds len to memaddr and gets 0. */ + /* However, something like + adapt_read_bytes (CORE_ADDR_MAX - 3, foo, 4) + doesn't need to work. Detect it and give up if there's an attempt + to do that. */ + /* DENTER("adapt_read_inferior_memory()"); */ + + if (((memaddr - 1) + len) < memaddr) + return EIO; + + startaddr = memaddr; + count = 0; + while (count < len) + { + len_this_pass = 16; + if ((startaddr % 16) != 0) + len_this_pass -= startaddr % 16; + if (len_this_pass > (len - count)) + len_this_pass = (len - count); + + fprintf (adapt_stream, "db %x,%x\r", startaddr, + (startaddr - 1) + len_this_pass); + +#ifdef NOTDEF /* Why do this */ + expect ("\n"); + /* Look for 8 hex digits. */ + i = 0; + while (1) + { + if (isxdigit (readchar ())) + ++i; + else + { + expect_prompt (); + error ("Hex digit expected from remote system."); + } + if (i >= 8) + break; + } +#endif /* NOTDEF */ + + expect (" "); + + for (i = 0; i < len_this_pass; i++) + get_hex_byte (&myaddr[count++]); + + expect_prompt (); + + startaddr += len_this_pass; + } + + /* DEXIT("adapt_read_inferior_memory()"); */ + return count; +} + +#define MAX_BREAKS 8 +static int num_brkpts=0; +static int +adapt_insert_breakpoint(addr, save) +CORE_ADDR addr; +char *save; /* Throw away, let adapt save instructions */ +{ + DENTER("adapt_insert_breakpoint()"); + if (num_brkpts < MAX_BREAKS) { + num_brkpts++; + fprintf (adapt_stream, "B %x", addr); + fprintf (adapt_stream, "\r"); + expect_prompt (); + DEXIT("adapt_insert_breakpoint() success"); + return(0); /* Success */ + } else { + fprintf_filtered(stderr, + "Too many break points, break point not installed\n"); + DEXIT("adapt_insert_breakpoint() failure"); + return(1); /* Failure */ + } + +} +static int +adapt_remove_breakpoint(addr, save) +CORE_ADDR addr; +char *save; /* Throw away, let adapt save instructions */ +{ + DENTER("adapt_remove_breakpoint()"); + if (num_brkpts > 0) { + num_brkpts--; + fprintf (adapt_stream, "BR %x", addr); + fprintf (adapt_stream, "\r"); + fflush (adapt_stream); + expect_prompt (); + } + DEXIT("adapt_remove_breakpoint()"); + return(0); +} + +/* Clear the adapts notion of what the break points are */ +static int +adapt_clear_breakpoints() +{ + DENTER("adapt_clear_breakpoint()"); + if (adapt_stream) { + fprintf (adapt_stream, "BR"); /* Clear all break points */ + fprintf (adapt_stream, "\r"); + fflush(adapt_stream); + expect_prompt (); + } + num_brkpts = 0; + DEXIT("adapt_clear_breakpoint()"); +} +static void +adapt_mourn() +{ + DENTER("adapt_mourn()"); + adapt_clear_breakpoints(); + pop_target (); /* Pop back to no-child state */ + generic_mourn_inferior (); + DEXIT("adapt_mourn()"); +} + +/* Display everthing we read in from the adapt until we match/see the + * specified string + */ +static int +display_until(str) +char *str; +{ + int i=0,j,c; + + while (c=readchar()) { + if (c==str[i]) { + i++; + if (i == strlen(str)) return; + } else { + if (i) { + for (j=0 ; j", class_obscure, adapt_com, + "Send a command to the AMD Adapt remote monitor."); +} diff --git a/gdb/remote-mm.c b/gdb/remote-mm.c new file mode 100644 index 00000000000..d3c67e65549 --- /dev/null +++ b/gdb/remote-mm.c @@ -0,0 +1,1684 @@ +/* Remote debugging interface for Am290*0 running MiniMON monitor, for GDB. + Copyright (C) 1990, 1991 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., 675 Mass Ave, Cambridge, MA 02139, 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 +#include "defs.h" +#include "inferior.h" +#include "wait.h" +#include "value.h" +#include +#include +#include +#include +#include +#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 DEBUG 1 /* */ +#ifdef DEBUG +# define DENTER(NAME) (printf("Entering %s\n",NAME), fflush(stdout)) +# define DEXIT(NAME) (printf("Exiting %s\n",NAME), fflush(stdout)) +#else +# define DENTER(NAME) +# define DEXIT(NAME) +#endif + +#define DRAIN_INPUT() (msg_recv_serial((union msg_t*)0)) + +extern int stop_soon_quietly; /* for wait_for_inferior */ + +extern struct value *call_function_by_hand(); + +static void mm_resume(); +static void mm_fetch_registers (); +static int fetch_register (); +static int 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(); + +/* + * Processor types. + */ +#define TYPE_UNKNOWN 0 +#define TYPE_A29000 1 +#define TYPE_A29030 2 +#define TYPE_A29050 3 +static char *processor_name[] = { "Unknown", "A29000", "A29030", "A29050" }; +static int processor_type=TYPE_UNKNOWN; +#define FREEZE_MODE (read_register(CPS_REGNUM) && 0x400) +#define USE_SHADOW_PC ((processor_type == TYPE_A29050) && FREEZE_MODE) + +#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]; + + DENTER("mm_create_inferior()"); + + if (args && *args) + error ("Can't pass arguments to remote mm process (yet)."); + + if (execfile == 0 /* || exec_bfd == 0 */ ) + error ("No exec 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. */ +#ifdef NOTDEF /* start_remote() now does a wait without a resume + so don't use it*/ + start_remote (); +#else + init_wait_for_inferior (); + clear_proceed_status (); + stop_soon_quietly = 1; + proceed(-1,-1,0); + normal_stop (); +#endif + DEXIT("mm_create_inferior()"); +} +/**************************************************** REMOTE_MOURN_INFERIOR */ +static void +mm_mourn() +{ + DENTER("mm_mourn()"); + pop_target (); /* Pop back to no-child state */ + generic_mourn_inferior (); + DEXIT("mm_mourn()"); +} + +/********************************************************************** 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; + + DENTER("mm_open()"); + + /* Find the first whitespace character, it separates dev_name from + prog_name. */ + for (p = name; + *p != '\0' && !isspace (*p); p++) + ; + if (*p == '\0') +erroid: + error ("Usage : [progname]"); + dev_name = (char*)malloc (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); + + /* Determine the processor revision level */ + /* FIXME: this code is the same as in remote-adapt.c */ + prl = (unsigned int)read_register(CFG_REGNUM) >> 24; + if (prl == 0x03) { + processor_type = TYPE_A29000; + } else if ((prl&0xf0) == 0x40) { /* 29030 = 0x4* */ + processor_type = TYPE_A29030; + fprintf_filtered(stderr,"WARNING: debugging of A29030 not tested.\n"); + } else if ((prl&0xf0) == 0x20) { /* 29050 = 0x2* */ + processor_type = TYPE_A29050; + fprintf_filtered(stderr,"WARNING: debugging of A29050 not tested.\n"); + } else { + processor_type = TYPE_UNKNOWN; + fprintf_filtered(stderr,"WARNING: processor type unknown.\n"); + } + + /* Print out some stuff, letting the user now what's going on */ + printf_filtered("Remote debugging on an %s connect to MiniMon via %s.\n", + processor_name[processor_type],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 != TYPE_A29050) { + fprintf_filtered(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 */ + + DEXIT("mm_open()"); +} + +/**************************************************************** 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; +{ + DENTER("mm_close()"); + + 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"); + + DEXIT("mm_close()"); + +} + +/************************************************************* 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; +{ + + DENTER("mm_attach()"); + + if (!mm_stream) + printf ("MiniMon not opened yet, use the 'target minimon' command.\n"); + + dont_repeat(); + + 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); + + mark_breakpoints_out (); + init_wait_for_inferior (); + clear_proceed_status (); + stop_soon_quietly = 1; + wait_for_inferior (); + stop_soon_quietly = 0; + normal_stop (); + + DEXIT("mm_attach()"); +} +/********************************************************** 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; +{ + DENTER("mm_dettach()"); + 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 */ + DEXIT("mm_dettach()"); +} + + +/*************************************************************** REMOTE_RESUME +** Tell the remote machine to resume. */ + +static void +mm_resume (step, sig) + int step, sig; +{ + DENTER("mm_resume()"); + + if (sig) + error ("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); + } + + DEXIT("mm_resume()"); +} + +/***************************************************************** REMOTE_WAIT +** Wait until the remote machine stops, then return, + storing status in STATUS just as `wait' would. */ + +static int +mm_wait (status) + WAITTYPE *status; +{ + int i, result; + int old_timeout = timeout; + int old_immediate_quit = immediate_quit; + + DENTER("mm_wait()"); + WSETEXIT ((*status), 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); + fflush(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); + WSETSTOP ((*status), SIGTRAP); + } + 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); + WSETSTOP ((*status), SIGBUS); + } + 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); + WSETSTOP ((*status), SIGFPE); + } + 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); + WSETSTOP ((*status), SIGILL); + } + 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); + WSETSTOP ((*status), SIGSEGV); + } + 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); + WSETSTOP ((*status), SIGILL); + } + 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); + WSETSTOP ((*status), SIGALRM); + } + else if (in_msg_buf->halt_msg.trap_number== 15) + WSETSTOP ((*status), SIGTRAP); + 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); + WSETSTOP ((*status), SIGINT); + } + 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); + WSETSTOP ((*status), SIGILL); + } /* BREAK message was sent */ + else if (in_msg_buf->halt_msg.trap_number== 75) + WSETSTOP ((*status), SIGTRAP); + else +exit: + WSETEXIT ((*status), 0); + + timeout = old_timeout; /* Restore original timeout value */ + immediate_quit = old_immediate_quit; + DEXIT("mm_wait()"); + 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; + } + + DENTER("mm_fetch_registers()"); + +/* 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; regnoread_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; regnoread_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; regnoread_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 (INT_REGNUM, &val); + supply_register (FPS_REGNUM, &val); + supply_register (EXO_REGNUM, &val); + } + + DEXIT("mm_fetch_registerS()"); +} + + +/****************************************************** REMOTE_STORE_REGISTERS +** Store register regno into the target. + * If regno==-1 then store all the registers. + */ + +static int +mm_store_registers (regno) +int regno; +{ + + if (regno >= 0) + return(store_register(regno)); + + DENTER("mm_store_registers()"); + + 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); + expect_msg(WRITE_ACK,in_msg_buf,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 ; regnowrite_r_msg.data[regno-GR64_REGNUM] = read_register (regno); + } + msg_send_serial(out_msg_buf); + expect_msg(WRITE_ACK,in_msg_buf,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 ; regnowrite_r_msg.data[regno-GR96_REGNUM] = read_register (regno); + } + msg_send_serial( out_msg_buf); + expect_msg(WRITE_ACK,in_msg_buf,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); + expect_msg(WRITE_ACK,in_msg_buf,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); + expect_msg(WRITE_ACK,in_msg_buf,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); + expect_msg(WRITE_ACK,in_msg_buf,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); + expect_msg(WRITE_ACK,in_msg_buf,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); + expect_msg(WRITE_ACK,in_msg_buf,1); + + registers_changed (); + DEXIT("mm_store_registers()"); +} + +/*************************************************** 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 +} +/* 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); +} + +/******************************************************* 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; +{ + DENTER("mm_insert_breakpoint()"); + 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)) { + DEXIT("mm_insert_breakpoint() success"); + return 0; /* Success */ + } else { + DEXIT("mm_insert_breakpoint() failure"); + return 1; /* Failure */ + } +} + +/************************************************* REMOTE_DELETE_BREAKPOINT */ +static int +mm_remove_breakpoint (addr, contents_cache) + CORE_ADDR addr; + char *contents_cache; +{ + DENTER("mm_remove_breakpoint()"); + 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)) { + DEXIT("mm_remove_breakpoint()"); + return 0; /* Success */ + } else { + DEXIT("mm_remove_breakpoint()"); + return 1; /* Failure */ + } +} + + +/******************************************************* REMOTE_KILL */ +static void +mm_kill(arg,from_tty) +char *arg; +int from_tty; +{ + char buf[4]; + + DENTER("mm_kill()"); +#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 + DEXIT("mm_kill()"); +} + + + +/***************************************************************************/ +/* + * 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); +#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; + + /* DENTER("mm_write_inferior_memory()"); */ + 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; + } + } + /* DEXIT("mm_write_inferior_memory()"); */ + 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; + + /* DENTER("mm_read_inferior_memory()"); */ + 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 ; iread_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); +} + +/********************************************************** 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; + DENTER("mm_fetch_register()"); + 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; + } + DEXIT("mm_fetch_register()"); + return result; +} +/*****************************************************************************/ +/* Store a single register indicated by 'regno'. + * Returns 0/-1 on success/failure. + */ +static int +store_register (regno) + int regno; +{ + int result; + + DENTER("store_register()"); + 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; + } + DEXIT("store_register()"); + 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 INT_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 */ +{ + /* DENTER("expect_msg()"); */ + int retries=0; + while(msg_recv_serial(msg_buf) && (retries++= MAX_RETRIES) { + printf("Expected msg %s, ",msg_str(msgcode)); + printf("no message received!\n"); + /* DEXIT("expect_msg() failure"); */ + 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)); + } + /* DEXIT("expect_msg() failure"); */ + return(0); /* Failure */ + } + /* DEXIT("expect_msg() success"); */ + 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 = { + "minimon", "Remote AMD/Minimon target", + "Remote debug an AMD 290*0 using the MiniMon dbg core on the target", + mm_open, mm_close, + mm_attach, mm_detach, mm_resume, mm_wait, + mm_fetch_registers, mm_store_registers, + mm_prepare_to_store, 0, 0, /* conv_to, conv_from */ + mm_xfer_inferior_memory, + mm_files_info, + mm_insert_breakpoint, mm_remove_breakpoint, /* Breakpoints */ + 0, 0, 0, 0, 0, /* Terminal handling */ + mm_kill, /* FIXME, kill */ + mm_load, + call_function_by_hand, + 0, /* lookup_symbol */ + mm_create_inferior, /* create_inferior */ + mm_mourn, /* mourn_inferior FIXME */ + process_stratum, 0, /* next */ + 1, 1, 1, 1, 1, /* all mem, mem, stack, regs, exec */ + 0,0, /* sections, sections_end */ + OPS_MAGIC, /* Always the last thing */ +}; + +void +_initialize_remote_mm() +{ + add_target (&mm_ops); +} + +#ifdef NO_HIF_SUPPORT +service_HIF(msg) +union msg_t *msg; +{ + return(0); /* Emulate a failure */ +} +#endif diff --git a/gdb/ultra3-xdep.c b/gdb/ultra3-xdep.c new file mode 100644 index 00000000000..c910e3d4779 --- /dev/null +++ b/gdb/ultra3-xdep.c @@ -0,0 +1,393 @@ +/* Host-dependent code for GDB, for NYU Ultra3 running Sym1 OS. + Copyright (C) 1988, 1989, 1991 Free Software Foundation, Inc. + Contributed by David Wood (wood@nyu.edu) at New York University. + +This file is part of GDB. + +This program is free software; you can redistribute it and/or modify +it under the terms of the GNU General Public License as published by +the Free Software Foundation; either version 2 of the License, or +(at your option) any later version. + +This program is distributed in the hope that it will be useful, +but WITHOUT ANY WARRANTY; without even the implied warranty of +MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the +GNU General Public License for more details. + +You should have received a copy of the GNU General Public License +along with this program; if not, write to the Free Software +Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. */ + +#define DEBUG +#include +#include "defs.h" +#include "param.h" +#include "frame.h" +#include "inferior.h" +#include "symtab.h" +#include "value.h" + +#include +#include +#include +#include +#include + +#include "gdbcore.h" + +#include +#include +#include + +/* Assumes support for AMD's Binary Compatibility Standard + for ptrace(). If you define ULTRA3, the ultra3 extensions to + ptrace() are used allowing the reading of more than one register + at a time. + + This file assumes KERNEL_DEBUGGING is turned off. This means + that if the user/gdb tries to read gr64-gr95 or any of the + protected special registers we silently return -1 (see the + CANNOT_STORE/FETCH_REGISTER macros). */ +#define ULTRA3 + +#if !defined (offsetof) +# define offsetof(TYPE, MEMBER) ((unsigned long) &((TYPE *)0)->MEMBER) +#endif + +extern int errno; +struct ptrace_user pt_struct; + +/* + * Fetch an individual register (and supply it). + * return 0 on success, -1 on failure. + * NOTE: Assumes AMD's Binary Compatibility Standard for ptrace(). + */ +static void +fetch_register (regno) + int regno; +{ + char buf[128]; + int val; + + if (CANNOT_FETCH_REGISTER(regno)) { + val = -1; + supply_register (regno, &val); + } else { + errno = 0; + val = ptrace (PT_READ_U, inferior_pid, (int*)register_addr(regno,0), 0); + if (errno != 0) { + sprintf(buf,"reading register %s (#%d)",reg_names[regno],regno); + perror_with_name (buf); + } else { + supply_register (regno, &val); + } + } +} + +/* Get all available registers from the inferior. Registers that are + * defined in REGISTER_NAMES, but not available to the user/gdb are + * supplied as -1. This may include gr64-gr95 and the protected special + * purpose registers. + */ + +void +fetch_inferior_registers (regno) + int regno; +{ + register int i,j,ret_val=0; + char buf[128]; + + if (regno != -1) { + fetch_register (regno); + return; + } + +/* Global Registers */ +#ifdef ULTRA3 + errno = 0; + ptrace (PT_READ_STRUCT, inferior_pid, (int*)register_addr(GR96_REGNUM,0), + (int)&pt_struct.pt_gr[0], 32*4); + if (errno != 0) { + perror_with_name ("reading global registers"); + ret_val = -1; + } else for (regno=GR96_REGNUM, j=0 ; j<32 ; regno++, j++) { + supply_register (regno, &pt_struct.pt_gr[j]); + } +#else + for (regno=GR96_REGNUM ; !ret_val && regno < GR96_REGNUM+32 ; regno++) + fetch_register(regno); +#endif + +/* Local Registers */ +#ifdef ULTRA3 + errno = 0; + ptrace (PT_READ_STRUCT, inferior_pid, (int*)register_addr(LR0_REGNUM,0), + (int)&pt_struct.pt_lr[0], 128*4); + if (errno != 0) { + perror_with_name ("reading local registers"); + ret_val = -1; + } else for (regno=LR0_REGNUM, j=0 ; j<128 ; regno++, j++) { + supply_register (regno, &pt_struct.pt_lr[j]); + } +#else + for (regno=LR0_REGNUM ; !ret_val && regno < LR0_REGNUM+128 ; regno++) + fetch_register(regno); +#endif + +/* Special Registers */ + fetch_register(GR1_REGNUM); + fetch_register(CPS_REGNUM); + fetch_register(PC_REGNUM); + fetch_register(NPC_REGNUM); + fetch_register(PC2_REGNUM); + fetch_register(IPC_REGNUM); + fetch_register(IPA_REGNUM); + fetch_register(IPB_REGNUM); + fetch_register(Q_REGNUM); + fetch_register(BP_REGNUM); + fetch_register(FC_REGNUM); + +/* Fake any registers that are in REGISTER_NAMES, but not available to gdb */ + registers_fetched(); +} + +/* Store our register values back into the inferior. + * If REGNO is -1, do this for all registers. + * Otherwise, REGNO specifies which register (so we can save time). + * NOTE: Assumes AMD's binary compatibility standard. + */ + +int +store_inferior_registers (regno) + int regno; +{ + register unsigned int regaddr; + char buf[80]; + + if (regno >= 0) + { + if (CANNOT_STORE_REGISTER(regno)) + return 0; /* Pretend success */ + regaddr = register_addr (regno, 0); + errno = 0; + ptrace (PT_WRITE_U, inferior_pid,(int*)regaddr,read_register(regno)); + if (errno != 0) + { + sprintf (buf, "writing register %s (#%d)", reg_names[regno],regno); + perror_with_name (buf); + } + } + else + { +#ifdef ULTRA3 + pt_struct.pt_gr1 = read_register(GR1_REGNUM); + for (regno = GR96_REGNUM; regno < GR96_REGNUM+32; regno++) + pt_struct.pt_gr[regno] = read_register(regno); + for (regno = LR0_REGNUM; regno < LR0_REGNUM+128; regno++) + pt_struct.pt_gr[regno] = read_register(regno); + errno = 0; + ptrace (PT_WRITE_STRUCT, inferior_pid, (int*)register_addr(GR1_REGNUM,0), + (int)&pt_struct.pt_gr1,(1*32*128)*4); + if (errno != 0) + { + sprintf (buf, "writing all local/global registers"); + perror_with_name (buf); + } + pt_struct.pt_psr = read_register(CPS_REGNUM); + pt_struct.pt_pc0 = read_register(NPC_REGNUM); + pt_struct.pt_pc1 = read_register(PC_REGNUM); + pt_struct.pt_pc2 = read_register(PC2_REGNUM); + pt_struct.pt_ipc = read_register(IPC_REGNUM); + pt_struct.pt_ipa = read_register(IPA_REGNUM); + pt_struct.pt_ipb = read_register(IPB_REGNUM); + pt_struct.pt_q = read_register(Q_REGNUM); + pt_struct.pt_bp = read_register(BP_REGNUM); + pt_struct.pt_fc = read_register(FC_REGNUM); + errno = 0; + ptrace (PT_WRITE_STRUCT, inferior_pid, (int*)register_addr(CPS_REGNUM,0), + (int)&pt_struct.pt_psr,(10)*4); + if (errno != 0) + { + sprintf (buf, "writing all special registers"); + perror_with_name (buf); + return -1; + } +#else + store_inferior_registers(GR1_REGNUM); + for (regno=GR96_REGNUM ; regno= LR0_REGNUM) && (regno < LR0_REGNUM + 128)) { + return(offsetof(struct ptrace_user,pt_lr[regno-LR0_REGNUM])); + } else if ((regno >= GR96_REGNUM) && (regno < GR96_REGNUM + 32)) { + return(offsetof(struct ptrace_user,pt_gr[regno-GR96_REGNUM])); + } else { + switch (regno) { + case GR1_REGNUM: return(offsetof(struct ptrace_user,pt_gr1)); + case CPS_REGNUM: return(offsetof(struct ptrace_user,pt_psr)); + case NPC_REGNUM: return(offsetof(struct ptrace_user,pt_pc0)); + case PC_REGNUM: return(offsetof(struct ptrace_user,pt_pc1)); + case PC2_REGNUM: return(offsetof(struct ptrace_user,pt_pc2)); + case IPC_REGNUM: return(offsetof(struct ptrace_user,pt_ipc)); + case IPA_REGNUM: return(offsetof(struct ptrace_user,pt_ipa)); + case IPB_REGNUM: return(offsetof(struct ptrace_user,pt_ipb)); + case Q_REGNUM: return(offsetof(struct ptrace_user,pt_q)); + case BP_REGNUM: return(offsetof(struct ptrace_user,pt_bp)); + case FC_REGNUM: return(offsetof(struct ptrace_user,pt_fc)); + default: + fprintf_filtered(stderr,"register_addr():Bad register %s (%d)\n", + reg_names[regno],regno); + return(0xffffffff); /* Should make ptrace() fail */ + } + } +} + + +/* Assorted operating system circumventions */ + +#ifdef SYM1 + +/* FIXME: Kludge this for now. It really should be system call. */ +int +getpagesize() +{ return(8192); } + +/* FIXME: Fake out the fcntl() call, which we don't have. */ +fcntl(fd, cmd, arg) +int fd, cmd, arg; +{ + + switch (cmd) { + case F_GETFL: return(O_RDONLY); break; + default: + printf("Ultra3's fcntl() failing, cmd = %d.\n",cmd); + return(-1); + } +} + + +/* + * 4.2 Signal support, requires linking with libjobs. + */ +static int _SigMask; +#define sigbit(s) (1L << ((s)-1)) + +init_SigMask() +{ + /* Taken from the sym1 kernel in machdep.c:startup() */ + _SigMask = sigbit (SIGTSTP) | sigbit (SIGTTOU) | sigbit (SIGTTIN) | + sigbit (SIGCHLD) | sigbit (SIGTINT); +} + +sigmask(signo) + int signo; +{ + return (1 << (signo-1)); +} + +sigsetmask(sigmask) +unsigned int sigmask; +{ + int i, mask = 1; + int lastmask = _SigMask; + + for (i=0 ; i