| /* Remote target glue for the ROM68K ROM monitor. |
| Copyright 1988, 1991, 1992, 1993, 1994, 1995, 1998, 1999, 2000, 2001 |
| 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., 59 Temple Place - Suite 330, |
| Boston, MA 02111-1307, USA. */ |
| |
| #include "defs.h" |
| #include "gdbcore.h" |
| #include "target.h" |
| #include "monitor.h" |
| #include "serial.h" |
| #include "regcache.h" |
| #include "value.h" |
| |
| static void rom68k_open (char *args, int from_tty); |
| |
| /* Return true if C is a hex digit. |
| We can't use isxdigit here: that is affected by the current locale; |
| ROM68K is not. */ |
| static int |
| is_hex_digit (int c) |
| { |
| return (('0' <= c && c <= '9') |
| || ('a' <= c && c <= 'f') |
| || ('A' <= c && c <= 'F')); |
| } |
| |
| |
| /* Convert hex digit A to a number. */ |
| static int |
| hex_digit_value (int a) |
| { |
| if (a >= '0' && a <= '9') |
| return a - '0'; |
| else if (a >= 'a' && a <= 'f') |
| return a - 'a' + 10; |
| else if (a >= 'A' && a <= 'F') |
| return a - 'A' + 10; |
| else |
| error ("Invalid hex digit %d", a); |
| } |
| |
| |
| /* Return true iff C is a whitespace character. |
| We can't use isspace here: that is affected by the current locale; |
| ROM68K is not. */ |
| static int |
| is_whitespace (int c) |
| { |
| return (c == ' ' |
| || c == '\r' |
| || c == '\n' |
| || c == '\t' |
| || c == '\f'); |
| } |
| |
| |
| /* Parse a string of hex digits starting at HEX, supply them as the |
| value of register REGNO, skip any whitespace, and return a pointer |
| to the next character. |
| |
| There is a function in monitor.c, monitor_supply_register, which is |
| supposed to do this job. However, there is some rather odd stuff |
| in there (whitespace characters don't terminate numbers, for |
| example) that is incorrect for ROM68k. It's basically impossible |
| to safely tweak monitor_supply_register --- it's used by a zillion |
| other monitors; who knows what behaviors they're depending on. So |
| instead, we'll just use our own function, which can behave exactly |
| the way we want it to. */ |
| static char * |
| rom68k_supply_one_register (int regno, unsigned char *hex) |
| { |
| ULONGEST value; |
| unsigned char regbuf[MAX_REGISTER_RAW_SIZE]; |
| |
| value = 0; |
| while (*hex != '\0') |
| if (is_hex_digit (*hex)) |
| value = (value * 16) + hex_digit_value (*hex++); |
| else |
| break; |
| |
| /* Skip any whitespace. */ |
| while (is_whitespace (*hex)) |
| hex++; |
| |
| store_unsigned_integer (regbuf, REGISTER_RAW_SIZE (regno), value); |
| supply_register (regno, regbuf); |
| |
| return hex; |
| } |
| |
| |
| static void |
| rom68k_supply_register (char *regname, int regnamelen, char *val, int vallen) |
| { |
| int numregs; |
| int regno; |
| |
| numregs = 1; |
| regno = -1; |
| |
| if (regnamelen == 2) |
| switch (regname[0]) |
| { |
| case 'S': |
| if (regname[1] == 'R') |
| regno = PS_REGNUM; |
| break; |
| case 'P': |
| if (regname[1] == 'C') |
| regno = PC_REGNUM; |
| break; |
| case 'D': |
| if (regname[1] != 'R') |
| break; |
| regno = D0_REGNUM; |
| numregs = 8; |
| break; |
| case 'A': |
| if (regname[1] != 'R') |
| break; |
| regno = A0_REGNUM; |
| numregs = 7; |
| break; |
| } |
| else if (regnamelen == 3) |
| switch (regname[0]) |
| { |
| case 'I': |
| if (regname[1] == 'S' && regname[2] == 'P') |
| regno = SP_REGNUM; |
| } |
| |
| if (regno >= 0) |
| while (numregs-- > 0) |
| val = rom68k_supply_one_register (regno++, val); |
| } |
| |
| /* This array of registers need to match the indexes used by GDB. |
| This exists because the various ROM monitors use different strings |
| than does GDB, and don't necessarily support all the registers |
| either. So, typing "info reg sp" becomes a "r30". */ |
| |
| static const char * |
| rom68k_regname (int index) |
| { |
| |
| static char *regnames[] = |
| { |
| "D0", "D1", "D2", "D3", "D4", "D5", "D6", "D7", |
| "A0", "A1", "A2", "A3", "A4", "A5", "A6", "ISP", |
| "SR", "PC" |
| }; |
| |
| if ((index >= (sizeof (regnames) / sizeof(regnames[0]))) |
| || (index < 0) || (index >= NUM_REGS)) |
| return NULL; |
| else |
| return regnames[index]; |
| |
| } |
| |
| /* Define the monitor command strings. Since these are passed directly |
| through to a printf style function, we may include formatting |
| strings. We also need a CR or LF on the end. */ |
| |
| static struct target_ops rom68k_ops; |
| |
| static char *rom68k_inits[] = |
| {".\r\r", NULL}; /* Exits pm/pr & download cmds */ |
| |
| static struct monitor_ops rom68k_cmds; |
| |
| static void |
| init_rom68k_cmds (void) |
| { |
| rom68k_cmds.flags = MO_PRINT_PROGRAM_OUTPUT; |
| rom68k_cmds.init = rom68k_inits; /* monitor init string */ |
| rom68k_cmds.cont = "go\r"; |
| rom68k_cmds.step = "st\r"; |
| rom68k_cmds.stop = NULL; |
| rom68k_cmds.set_break = "db %x\r"; |
| rom68k_cmds.clr_break = "cb %x\r"; |
| rom68k_cmds.clr_all_break = "cb *\r"; |
| rom68k_cmds.fill = "fm %x %x %x\r"; |
| rom68k_cmds.setmem.cmdb = "pm %x %x\r"; |
| rom68k_cmds.setmem.cmdw = "pm.w %x %x\r"; |
| rom68k_cmds.setmem.cmdl = "pm.l %x %x\r"; |
| rom68k_cmds.setmem.cmdll = NULL; |
| rom68k_cmds.setmem.resp_delim = NULL; |
| rom68k_cmds.setmem.term = NULL; |
| rom68k_cmds.setmem.term_cmd = NULL; |
| rom68k_cmds.getmem.cmdb = "dm %x %x\r"; |
| rom68k_cmds.getmem.cmdw = "dm.w %x %x\r"; |
| rom68k_cmds.getmem.cmdl = "dm.l %x %x\r"; |
| rom68k_cmds.getmem.cmdll = NULL; |
| rom68k_cmds.getmem.resp_delim = " "; |
| rom68k_cmds.getmem.term = NULL; |
| rom68k_cmds.getmem.term_cmd = NULL; |
| rom68k_cmds.setreg.cmd = "pr %s %x\r"; |
| rom68k_cmds.setreg.resp_delim = NULL; |
| rom68k_cmds.setreg.term = NULL; |
| rom68k_cmds.setreg.term_cmd = NULL; |
| rom68k_cmds.getreg.cmd = "pr %s\r"; |
| rom68k_cmds.getreg.resp_delim = ": "; |
| rom68k_cmds.getreg.term = "= "; |
| rom68k_cmds.getreg.term_cmd = ".\r"; |
| rom68k_cmds.dump_registers = "dr\r"; |
| rom68k_cmds.register_pattern = |
| "\\(\\w+\\)=\\([0-9a-fA-F]+\\( +[0-9a-fA-F]+\\b\\)*\\)"; |
| rom68k_cmds.supply_register = rom68k_supply_register; |
| rom68k_cmds.load_routine = NULL; |
| rom68k_cmds.load = "dc\r"; |
| rom68k_cmds.loadresp = "Waiting for S-records from host... "; |
| rom68k_cmds.prompt = "ROM68K :-> "; |
| rom68k_cmds.line_term = "\r"; |
| rom68k_cmds.cmd_end = ".\r"; |
| rom68k_cmds.target = &rom68k_ops; |
| rom68k_cmds.stopbits = SERIAL_1_STOPBITS; |
| rom68k_cmds.regnames = NULL; |
| rom68k_cmds.regname = rom68k_regname; |
| rom68k_cmds.magic = MONITOR_OPS_MAGIC; |
| } /* init_rom68k_cmds */ |
| |
| static void |
| rom68k_open (char *args, int from_tty) |
| { |
| monitor_open (args, &rom68k_cmds, from_tty); |
| } |
| |
| void |
| _initialize_rom68k (void) |
| { |
| init_rom68k_cmds (); |
| init_monitor_ops (&rom68k_ops); |
| |
| rom68k_ops.to_shortname = "rom68k"; |
| rom68k_ops.to_longname = "Rom68k debug monitor for the IDP Eval board"; |
| rom68k_ops.to_doc = "Debug on a Motorola IDP eval board running the ROM68K monitor.\n\ |
| Specify the serial device it is connected to (e.g. /dev/ttya)."; |
| rom68k_ops.to_open = rom68k_open; |
| |
| add_target (&rom68k_ops); |
| } |