| 1 | /* Remote target glue for the Intel 960 MON960 ROM monitor. |
| 2 | Copyright 1995, 1996 Free Software Foundation, Inc. |
| 3 | |
| 4 | This file is part of GDB. |
| 5 | |
| 6 | This program is free software; you can redistribute it and/or modify |
| 7 | it under the terms of the GNU General Public License as published by |
| 8 | the Free Software Foundation; either version 2 of the License, or |
| 9 | (at your option) any later version. |
| 10 | |
| 11 | This program is distributed in the hope that it will be useful, |
| 12 | but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 13 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| 14 | GNU General Public License for more details. |
| 15 | |
| 16 | You should have received a copy of the GNU General Public License |
| 17 | along with this program; if not, write to the Free Software |
| 18 | Foundation, Inc., 59 Temple Place - Suite 330, |
| 19 | Boston, MA 02111-1307, USA. */ |
| 20 | |
| 21 | |
| 22 | #include "defs.h" |
| 23 | #include "gdbcore.h" |
| 24 | #include "target.h" |
| 25 | #include "monitor.h" |
| 26 | #include "serial.h" |
| 27 | #include "srec.h" |
| 28 | #include "xmodem.h" |
| 29 | #include "symtab.h" |
| 30 | #include "symfile.h" /* for generic_load */ |
| 31 | #include "inferior.h" /* for write_pc() */ |
| 32 | |
| 33 | #define USE_GENERIC_LOAD |
| 34 | |
| 35 | static struct target_ops mon960_ops; |
| 36 | |
| 37 | static void mon960_open (char *args, int from_tty); |
| 38 | |
| 39 | #ifdef USE_GENERIC_LOAD |
| 40 | |
| 41 | static void |
| 42 | mon960_load_gen (char *filename, int from_tty) |
| 43 | { |
| 44 | extern int inferior_pid; |
| 45 | |
| 46 | generic_load (filename, from_tty); |
| 47 | /* Finally, make the PC point at the start address */ |
| 48 | if (exec_bfd) |
| 49 | write_pc (bfd_get_start_address (exec_bfd)); |
| 50 | |
| 51 | inferior_pid = 0; /* No process now */ |
| 52 | } |
| 53 | |
| 54 | #else |
| 55 | |
| 56 | static void |
| 57 | mon960_load (serial_t desc, char *file, int hashmark) |
| 58 | { |
| 59 | bfd *abfd; |
| 60 | asection *s; |
| 61 | char *buffer; |
| 62 | int i; |
| 63 | |
| 64 | buffer = alloca (XMODEM_PACKETSIZE); |
| 65 | abfd = bfd_openr (file, 0); |
| 66 | if (!abfd) |
| 67 | { |
| 68 | printf_filtered ("Unable to open file %s\n", file); |
| 69 | return; |
| 70 | } |
| 71 | if (bfd_check_format (abfd, bfd_object) == 0) |
| 72 | { |
| 73 | printf_filtered ("File is not an object file\n"); |
| 74 | return; |
| 75 | } |
| 76 | for (s = abfd->sections; s; s = s->next) |
| 77 | if (s->flags & SEC_LOAD) |
| 78 | { |
| 79 | bfd_size_type section_size; |
| 80 | printf_filtered ("%s\t: 0x%4x .. 0x%4x ", s->name, s->vma, |
| 81 | s->vma + s->_raw_size); |
| 82 | gdb_flush (gdb_stdout); |
| 83 | monitor_printf (current_monitor->load, s->vma); |
| 84 | if (current_monitor->loadresp) |
| 85 | monitor_expect (current_monitor->loadresp, NULL, 0); |
| 86 | xmodem_init_xfer (desc); |
| 87 | section_size = bfd_section_size (abfd, s); |
| 88 | for (i = 0; i < section_size; i += XMODEM_DATASIZE) |
| 89 | { |
| 90 | int numbytes; |
| 91 | numbytes = min (XMODEM_DATASIZE, section_size - i); |
| 92 | bfd_get_section_contents (abfd, s, buffer + XMODEM_DATAOFFSET, i, |
| 93 | numbytes); |
| 94 | xmodem_send_packet (desc, buffer, numbytes, hashmark); |
| 95 | if (hashmark) |
| 96 | { |
| 97 | putchar_unfiltered ('#'); |
| 98 | gdb_flush (gdb_stdout); |
| 99 | } |
| 100 | } /* Per-packet (or S-record) loop */ |
| 101 | xmodem_finish_xfer (desc); |
| 102 | monitor_expect_prompt (NULL, 0); |
| 103 | putchar_unfiltered ('\n'); |
| 104 | } /* Loadable sections */ |
| 105 | if (hashmark) |
| 106 | putchar_unfiltered ('\n'); |
| 107 | } |
| 108 | |
| 109 | #endif /* USE_GENERIC_LOAD */ |
| 110 | |
| 111 | /* This array of registers need to match the indexes used by GDB. |
| 112 | This exists because the various ROM monitors use different strings |
| 113 | than does GDB, and don't necessarily support all the registers |
| 114 | either. So, typing "info reg sp" becomes a "r30". */ |
| 115 | |
| 116 | /* these correspond to the offsets from tm-* files from config directories */ |
| 117 | /* g0-g14, fp, pfp, sp, rip,r3-15, pc, ac, tc, fp0-3 */ |
| 118 | /* NOTE: "ip" is documented as "ir" in the Mon960 UG. */ |
| 119 | /* NOTE: "ir" can't be accessed... but there's an ip and rip. */ |
| 120 | static char *full_regnames[NUM_REGS] = |
| 121 | { |
| 122 | /* 0 */ "pfp", "sp", "rip", "r3", "r4", "r5", "r6", "r7", |
| 123 | /* 8 */ "r8", "r9", "r10", "r11", "r12", "r13", "r14", "r15", |
| 124 | /* 16 */ "g0", "g1", "g2", "g3", "g4", "g5", "g6", "g7", |
| 125 | /* 24 */ "g8", "g9", "g10", "g11", "g12", "g13", "g14", "fp", |
| 126 | /* 32 */ "pc", "ac", "tc", "ip", "fp0", "fp1", "fp2", "fp3", |
| 127 | }; |
| 128 | |
| 129 | static char *mon960_regnames[NUM_REGS]; |
| 130 | |
| 131 | /* Define the monitor command strings. Since these are passed directly |
| 132 | through to a printf style function, we may include formatting |
| 133 | strings. We also need a CR or LF on the end. */ |
| 134 | |
| 135 | /* need to pause the monitor for timing reasons, so slow it down */ |
| 136 | |
| 137 | #if 0 |
| 138 | /* FIXME: this extremely long init string causes MON960 to return two NAKS |
| 139 | instead of performing the autobaud recognition, at least when gdb |
| 140 | is running on GNU/Linux. The short string below works on Linux, and on |
| 141 | SunOS using a tcp serial connection. Must retest on SunOS using a |
| 142 | direct serial connection; if that works, get rid of the long string. */ |
| 143 | static char *mon960_inits[] = |
| 144 | {"\n\r\r\r\r\r\r\r\r\r\r\r\r\r\r\n\r\n\r\n", NULL}; |
| 145 | #else |
| 146 | static char *mon960_inits[] = |
| 147 | {"\r", NULL}; |
| 148 | #endif |
| 149 | |
| 150 | static struct monitor_ops mon960_cmds; |
| 151 | |
| 152 | static void |
| 153 | init_mon960_cmds (void) |
| 154 | { |
| 155 | mon960_cmds.flags = MO_CLR_BREAK_USES_ADDR |
| 156 | | MO_NO_ECHO_ON_OPEN | MO_SEND_BREAK_ON_STOP | MO_GETMEM_READ_SINGLE; /* flags */ |
| 157 | mon960_cmds.init = mon960_inits; /* Init strings */ |
| 158 | mon960_cmds.cont = "go\n\r"; /* continue command */ |
| 159 | mon960_cmds.step = "st\n\r"; /* single step */ |
| 160 | mon960_cmds.stop = NULL; /* break interrupts the program */ |
| 161 | mon960_cmds.set_break = NULL; /* set a breakpoint */ |
| 162 | mon960_cmds.clr_break = /* can't use "br" because only 2 hw bps are supported */ |
| 163 | mon960_cmds.clr_all_break = NULL; /* clear a breakpoint - "de" is for hw bps */ |
| 164 | NULL, /* clear all breakpoints */ |
| 165 | mon960_cmds.fill = NULL; /* fill (start end val) */ |
| 166 | /* can't use "fi" because it takes words, not bytes */ |
| 167 | /* can't use "mb", "md" or "mo" because they require interaction */ |
| 168 | mon960_cmds.setmem.cmdb = NULL; /* setmem.cmdb (addr, value) */ |
| 169 | mon960_cmds.setmem.cmdw = NULL; /* setmem.cmdw (addr, value) */ |
| 170 | mon960_cmds.setmem.cmdl = "md %x %x\n\r"; /* setmem.cmdl (addr, value) */ |
| 171 | mon960_cmds.setmem.cmdll = NULL; /* setmem.cmdll (addr, value) */ |
| 172 | mon960_cmds.setmem.resp_delim = NULL; /* setmem.resp_delim */ |
| 173 | mon960_cmds.setmem.term = NULL; /* setmem.term */ |
| 174 | mon960_cmds.setmem.term_cmd = NULL; /* setmem.term_cmd */ |
| 175 | /* since the parsing of multiple bytes is difficult due to |
| 176 | interspersed addresses, we'll only read 1 value at a time, |
| 177 | even tho these can handle a count */ |
| 178 | mon960_cmds.getmem.cmdb = "db %x\n\r"; /* getmem.cmdb (addr, #bytes) */ |
| 179 | mon960_cmds.getmem.cmdw = "ds %x\n\r"; /* getmem.cmdw (addr, #swords) */ |
| 180 | mon960_cmds.getmem.cmdl = "di %x\n\r"; /* getmem.cmdl (addr, #words) */ |
| 181 | mon960_cmds.getmem.cmdll = "dd %x\n\r"; /* getmem.cmdll (addr, #dwords) */ |
| 182 | mon960_cmds.getmem.resp_delim = " : "; /* getmem.resp_delim */ |
| 183 | mon960_cmds.getmem.term = NULL; /* getmem.term */ |
| 184 | mon960_cmds.getmem.term_cmd = NULL; /* getmem.term_cmd */ |
| 185 | mon960_cmds.setreg.cmd = "md %s %x\n\r"; /* setreg.cmd (name, value) */ |
| 186 | mon960_cmds.setreg.resp_delim = NULL; /* setreg.resp_delim */ |
| 187 | mon960_cmds.setreg.term = NULL; /* setreg.term */ |
| 188 | mon960_cmds.setreg.term_cmd = NULL, /* setreg.term_cmd */ |
| 189 | mon960_cmds.getreg.cmd = "di %s\n\r"; /* getreg.cmd (name) */ |
| 190 | mon960_cmds.getreg.resp_delim = " : "; /* getreg.resp_delim */ |
| 191 | mon960_cmds.getreg.term = NULL; /* getreg.term */ |
| 192 | mon960_cmds.getreg.term_cmd = NULL; /* getreg.term_cmd */ |
| 193 | mon960_cmds.dump_registers = "re\n\r"; /* dump_registers */ |
| 194 | mon960_cmds.register_pattern = "\\(\\w+\\)=\\([0-9a-fA-F]+\\)"; /* register_pattern */ |
| 195 | mon960_cmds.supply_register = NULL; /* supply_register */ |
| 196 | #ifdef USE_GENERIC_LOAD |
| 197 | mon960_cmds.load_routine = NULL; /* load_routine (defaults to SRECs) */ |
| 198 | mon960_cmds.load = NULL; /* download command */ |
| 199 | mon960_cmds.loadresp = NULL; /* load response */ |
| 200 | #else |
| 201 | mon960_cmds.load_routine = mon960_load; /* load_routine (defaults to SRECs) */ |
| 202 | mon960_cmds.load = "do\n\r"; /* download command */ |
| 203 | mon960_cmds.loadresp = "Downloading\n\r"; /* load response */ |
| 204 | #endif |
| 205 | mon960_cmds.prompt = "=>"; /* monitor command prompt */ |
| 206 | mon960_cmds.line_term = "\n\r"; /* end-of-command delimitor */ |
| 207 | mon960_cmds.cmd_end = NULL; /* optional command terminator */ |
| 208 | mon960_cmds.target = &mon960_ops; /* target operations */ |
| 209 | mon960_cmds.stopbits = SERIAL_1_STOPBITS; /* number of stop bits */ |
| 210 | mon960_cmds.regnames = mon960_regnames; /* registers names */ |
| 211 | mon960_cmds.magic = MONITOR_OPS_MAGIC; /* magic */ |
| 212 | }; |
| 213 | |
| 214 | static void |
| 215 | mon960_open (char *args, int from_tty) |
| 216 | { |
| 217 | char buf[64]; |
| 218 | |
| 219 | monitor_open (args, &mon960_cmds, from_tty); |
| 220 | |
| 221 | /* Attempt to fetch the value of the first floating point register (fp0). |
| 222 | If the monitor returns a string containing the word "Bad" we'll assume |
| 223 | this processor has no floating point registers, and nullify the |
| 224 | regnames entries that refer to FP registers. */ |
| 225 | |
| 226 | monitor_printf (mon960_cmds.getreg.cmd, full_regnames[FP0_REGNUM]); /* di fp0 */ |
| 227 | if (monitor_expect_prompt (buf, sizeof (buf)) != -1) |
| 228 | if (strstr (buf, "Bad") != NULL) |
| 229 | { |
| 230 | int i; |
| 231 | |
| 232 | for (i = FP0_REGNUM; i < FP0_REGNUM + 4; i++) |
| 233 | mon960_regnames[i] = NULL; |
| 234 | } |
| 235 | } |
| 236 | |
| 237 | void |
| 238 | _initialize_mon960 (void) |
| 239 | { |
| 240 | memcpy (mon960_regnames, full_regnames, sizeof (full_regnames)); |
| 241 | |
| 242 | init_mon960_cmds (); |
| 243 | |
| 244 | init_monitor_ops (&mon960_ops); |
| 245 | |
| 246 | mon960_ops.to_shortname = "mon960"; /* for the target command */ |
| 247 | mon960_ops.to_longname = "Intel 960 MON960 monitor"; |
| 248 | #ifdef USE_GENERIC_LOAD |
| 249 | mon960_ops.to_load = mon960_load_gen; /* FIXME - should go back and try "do" */ |
| 250 | #endif |
| 251 | /* use SW breaks; target only supports 2 HW breakpoints */ |
| 252 | mon960_ops.to_insert_breakpoint = memory_insert_breakpoint; |
| 253 | mon960_ops.to_remove_breakpoint = memory_remove_breakpoint; |
| 254 | |
| 255 | mon960_ops.to_doc = |
| 256 | "Use an Intel 960 board running the MON960 debug monitor.\n\ |
| 257 | Specify the serial device it is connected to (e.g. /dev/ttya)."; |
| 258 | |
| 259 | mon960_ops.to_open = mon960_open; |
| 260 | add_target (&mon960_ops); |
| 261 | } |