1 /* Remote target glue for the Intel 960 MON960 ROM monitor.
2 Copyright 1995, 1996 Free Software Foundation, Inc.
4 This file is part of GDB.
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.
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.
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, Boston, MA 02111-1307, USA. */
29 #include "symfile.h" /* for generic_load */
32 #define USE_GENERIC_LOAD
34 static struct target_ops mon960_ops;
36 static void mon960_open PARAMS ((char *args, int from_tty));
38 #ifdef USE_GENERIC_LOAD
41 mon960_load_gen (filename, from_tty)
45 extern int inferior_pid;
47 generic_load (filename, from_tty);
48 /* Finally, make the PC point at the start address */
50 write_pc (bfd_get_start_address (exec_bfd));
52 inferior_pid = 0; /* No process now */
58 mon960_load (desc, file, hashmark)
68 buffer = alloca (XMODEM_PACKETSIZE);
69 abfd = bfd_openr (file, 0);
72 printf_filtered ("Unable to open file %s\n", file);
75 if (bfd_check_format (abfd, bfd_object) == 0)
77 printf_filtered ("File is not an object file\n");
80 for (s = abfd->sections; s; s = s->next)
81 if (s->flags & SEC_LOAD)
83 bfd_size_type section_size;
84 printf_filtered ("%s\t: 0x%4x .. 0x%4x ", s->name, s->vma,
85 s->vma + s->_raw_size);
86 gdb_flush (gdb_stdout);
87 monitor_printf (current_monitor->load, s->vma);
88 if (current_monitor->loadresp)
89 monitor_expect (current_monitor->loadresp, NULL, 0);
90 xmodem_init_xfer (desc);
91 section_size = bfd_section_size (abfd, s);
92 for (i = 0; i < section_size; i += XMODEM_DATASIZE)
95 numbytes = min (XMODEM_DATASIZE, section_size - i);
96 bfd_get_section_contents (abfd, s, buffer + XMODEM_DATAOFFSET, i,
98 xmodem_send_packet (desc, buffer, numbytes, hashmark);
101 putchar_unfiltered ('#');
102 gdb_flush (gdb_stdout);
104 } /* Per-packet (or S-record) loop */
105 xmodem_finish_xfer (desc);
106 monitor_expect_prompt (NULL, 0);
107 putchar_unfiltered ('\n');
108 } /* Loadable sections */
110 putchar_unfiltered ('\n');
113 #endif /* USE_GENERIC_LOAD */
115 /* This array of registers need to match the indexes used by GDB.
116 This exists because the various ROM monitors use different strings
117 than does GDB, and don't necessarily support all the registers
118 either. So, typing "info reg sp" becomes a "r30". */
120 /* these correspond to the offsets from tm-* files from config directories */
121 /* g0-g14, fp, pfp, sp, rip,r3-15, pc, ac, tc, fp0-3 */
122 /* NOTE: "ip" is documented as "ir" in the Mon960 UG. */
123 /* NOTE: "ir" can't be accessed... but there's an ip and rip. */
124 static char *full_regnames[NUM_REGS] = {
125 /* 0 */ "pfp", "sp", "rip", "r3", "r4", "r5", "r6", "r7",
126 /* 8 */ "r8", "r9", "r10", "r11", "r12", "r13", "r14", "r15",
127 /* 16 */ "g0", "g1", "g2", "g3", "g4", "g5", "g6", "g7",
128 /* 24 */ "g8", "g9", "g10", "g11", "g12", "g13", "g14", "fp",
129 /* 32 */ "pc", "ac", "tc", "ip", "fp0", "fp1", "fp2", "fp3",
132 static char *mon960_regnames[NUM_REGS];
134 /* Define the monitor command strings. Since these are passed directly
135 through to a printf style function, we may include formatting
136 strings. We also need a CR or LF on the end. */
138 /* need to pause the monitor for timing reasons, so slow it down */
141 /* FIXME: this extremely long init string causes MON960 to return two NAKS
142 instead of performing the autobaud recognition, at least when gdb
143 is running on Linux. The short string below works on Linux, and on
144 SunOS using a tcp serial connection. Must retest on SunOS using a
145 direct serial connection; if that works, get rid of the long string. */
146 static char *mon960_inits[] = {"\n\r\r\r\r\r\r\r\r\r\r\r\r\r\r\n\r\n\r\n", NULL};
148 static char *mon960_inits[] = { "\r", NULL};
151 static struct monitor_ops mon960_cmds =
153 MO_CLR_BREAK_USES_ADDR
155 | MO_SEND_BREAK_ON_STOP
156 | MO_GETMEM_READ_SINGLE, /* flags */
157 mon960_inits, /* Init strings */
158 "go\n\r", /* continue command */
159 "st\n\r", /* single step */
160 NULL, /* break interrupts the program */
161 NULL, /* set a breakpoint */
162 /* can't use "br" because only 2 hw bps are supported */
163 NULL, /* clear a breakpoint - "de" is for hw bps */
164 NULL, /* clear all breakpoints */
165 NULL, /* fill (start end val) */
166 /* can't use "fi" because it takes words, not bytes */
168 /* can't use "mb", "md" or "mo" because they require interaction */
169 NULL, /* setmem.cmdb (addr, value) */
170 NULL, /* setmem.cmdw (addr, value) */
171 "md %x %x\n\r", /* setmem.cmdl (addr, value) */
172 NULL, /* setmem.cmdll (addr, value) */
173 NULL, /* setmem.resp_delim */
174 NULL, /* setmem.term */
175 NULL, /* setmem.term_cmd */
178 /* since the parsing of multiple bytes is difficult due to
179 interspersed addresses, we'll only read 1 value at a time,
180 even tho these can handle a count */
181 "db %x\n\r", /* getmem.cmdb (addr, #bytes) */
182 "ds %x\n\r", /* getmem.cmdw (addr, #swords) */
183 "di %x\n\r", /* getmem.cmdl (addr, #words) */
184 "dd %x\n\r", /* getmem.cmdll (addr, #dwords) */
185 " : ", /* getmem.resp_delim */
186 NULL, /* getmem.term */
187 NULL, /* getmem.term_cmd */
190 "md %s %x\n\r", /* setreg.cmd (name, value) */
191 NULL, /* setreg.resp_delim */
192 NULL, /* setreg.term */
193 NULL /* setreg.term_cmd */
196 "di %s\n\r", /* getreg.cmd (name) */
197 " : ", /* getreg.resp_delim */
198 NULL, /* getreg.term */
199 NULL, /* getreg.term_cmd */
201 "re\n\r", /* dump_registers */
202 "\\(\\w+\\)=\\([0-9a-fA-F]+\\)", /* register_pattern */
203 NULL, /* supply_register */
204 #ifdef USE_GENERIC_LOAD
205 NULL, /* load_routine (defaults to SRECs) */
206 NULL, /* download command */
207 NULL, /* load response */
209 mon960_load, /* load_routine (defaults to SRECs) */
210 "do\n\r", /* download command */
211 "Downloading\n\r", /* load response */
213 "=>", /* monitor command prompt */
214 "\n\r", /* end-of-command delimitor */
215 NULL, /* optional command terminator */
216 &mon960_ops, /* target operations */
217 SERIAL_1_STOPBITS, /* number of stop bits */
218 mon960_regnames, /* registers names */
219 MONITOR_OPS_MAGIC /* magic */
223 mon960_open (args, from_tty)
229 monitor_open (args, &mon960_cmds, from_tty);
231 /* Attempt to fetch the value of the first floating point register (fp0).
232 If the monitor returns a string containing the word "Bad" we'll assume
233 this processor has no floating point registers, and nullify the
234 regnames entries that refer to FP registers. */
236 monitor_printf (mon960_cmds.getreg.cmd, full_regnames[FP0_REGNUM]); /* di fp0 */
237 if (monitor_expect_prompt (buf, sizeof(buf)) != -1)
238 if (strstr(buf, "Bad") != NULL)
242 for (i = FP0_REGNUM; i < FP0_REGNUM + 4; i++)
243 mon960_regnames[i] = NULL;
248 _initialize_mon960 ()
250 memcpy(mon960_regnames, full_regnames, sizeof(full_regnames));
252 init_monitor_ops (&mon960_ops);
254 mon960_ops.to_shortname = "mon960"; /* for the target command */
255 mon960_ops.to_longname = "Intel 960 MON960 monitor";
256 #ifdef USE_GENERIC_LOAD
257 mon960_ops.to_load = mon960_load_gen; /* FIXME - should go back and try "do" */
259 /* use SW breaks; target only supports 2 HW breakpoints */
260 mon960_ops.to_insert_breakpoint = memory_insert_breakpoint;
261 mon960_ops.to_remove_breakpoint = memory_remove_breakpoint;
264 "Use an Intel 960 board running the MON960 debug monitor.\n\
265 Specify the serial device it is connected to (e.g. /dev/ttya).";
267 mon960_ops.to_open = mon960_open;
268 add_target (&mon960_ops);