diff options
| -rw-r--r-- | gdb/NEWS | 4 | ||||
| -rw-r--r-- | gdb/dbug-rom.c | 169 |
2 files changed, 173 insertions, 0 deletions
@@ -7,6 +7,10 @@ Alpha Linux alpha-*-linux* +* New targets + +M68K with dBUG monitor m68*-*-{aout,coff,elf} + *** Changes in GDB-4.16: * New native configurations diff --git a/gdb/dbug-rom.c b/gdb/dbug-rom.c new file mode 100644 index 0000000..bffecc7 --- /dev/null +++ b/gdb/dbug-rom.c @@ -0,0 +1,169 @@ +/* Remote debugging interface to dBUG ROM monitor for GDB, the GNU debugger. + Copyright 1996 Free Software Foundation, Inc. + + Written by Stan Shebs of Cygnus Support. + +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. */ + +/* dBUG is a monitor supplied on various Motorola boards, including + m68k, ColdFire, and PowerPC-based designs. The code here assumes + the ColdFire, and (as of 9/25/96) has only been tested with a + ColdFire IDP board. */ + +#include "defs.h" +#include "gdbcore.h" +#include "target.h" +#include "monitor.h" +#include "serial.h" + +static void dbug_open PARAMS ((char *args, int from_tty)); + +static void +dbug_supply_register (regname, regnamelen, val, vallen) + char *regname; + int regnamelen; + char *val; + int vallen; +{ + int regno; + + if (regnamelen != 2) + return; + + switch (regname[0]) + { + case 'S': + if (regname[1] != 'R') + return; + regno = PS_REGNUM; + break; + case 'P': + if (regname[1] != 'C') + return; + regno = PC_REGNUM; + break; + case 'D': + if (regname[1] < '0' || regname[1] > '7') + return; + regno = regname[1] - '0' + D0_REGNUM; + break; + case 'A': + if (regname[1] < '0' || regname[1] > '7') + return; + regno = regname[1] - '0' + A0_REGNUM; + break; + default: + return; + } + + monitor_supply_register (regno, val); +} + +/* This array of registers needs to match the indexes used by GDB. The + whole reason this exists is because the various ROM monitors use + different names than GDB does, and don't support all the registers + either. So, typing "info reg sp" becomes an "A7". */ + +static char *dbug_regnames[NUM_REGS] = +{ + "D0", "D1", "D2", "D3", "D4", "D5", "D6", "D7", + "A0", "A1", "A2", "A3", "A4", "A5", "A6", "A7", + "SR", "PC" + /* no float registers */ +}; + +static struct target_ops dbug_ops; + +static char *dbug_inits[] = {"\r", NULL}; + +static struct monitor_ops dbug_cmds = +{ + MO_CLR_BREAK_USES_ADDR | MO_GETMEM_NEEDS_RANGE | MO_FILL_USES_ADDR, + dbug_inits, /* Init strings */ + "go\r", /* continue command */ + "step\r", /* single step */ + NULL, /* interrupt command */ + "br %x\r", /* set a breakpoint */ + "br -c %x\r", /* clear a breakpoint */ + "br -c\r", /* clear all breakpoints */ + "bf.b %x %x %x", /* fill (start end val) */ + { + "mm.b %x %x\r", /* setmem.cmdb (addr, value) */ + "mm.w %x %x\r", /* setmem.cmdw (addr, value) */ + "mm.l %x %x\r", /* setmem.cmdl (addr, value) */ + NULL, /* setmem.cmdll (addr, value) */ + NULL, /* setmem.resp_delim */ + NULL, /* setmem.term */ + NULL /* setmem.term_cmd */ + }, + { + "md.b %x %x\r", /* getmem.cmdb (addr, addr2) */ + "md.w %x %x\r", /* getmem.cmdw (addr, addr2) */ + "md.l %x %x\r", /* getmem.cmdl (addr, addr2) */ + NULL, /* getmem.cmdll (addr, addr2) */ + ":", /* getmem.resp_delim */ + NULL, /* getmem.term */ + NULL /* getmem.term_cmd */ + }, + { + "rm %s %x\r", /* setreg.cmd (name, value) */ + NULL, /* setreg.resp_delim */ + NULL, /* setreg.term */ + NULL /* setreg.term_cmd */ + }, + { + "rd %s\r", /* getreg.cmd (name) */ + ":", /* getreg.resp_delim */ + NULL, /* getreg.term */ + NULL /* getreg.term_cmd */ + }, + "rd\r", /* dump_registers */ + "\\(\\w+\\) +:\\([0-9a-fA-F]+\\b\\)", /* register_pattern */ + dbug_supply_register, /* supply_register */ + NULL, /* load_routine (defaults to SRECs) */ + "dl\r", /* download command */ + "\n", /* load response */ + "dBUG>", /* monitor command prompt */ + "\r", /* end-of-line terminator */ + NULL, /* optional command terminator */ + &dbug_ops, /* target operations */ + SERIAL_1_STOPBITS, /* number of stop bits */ + dbug_regnames, /* registers names */ + MONITOR_OPS_MAGIC /* magic */ + }; + +static void +dbug_open(args, from_tty) + char *args; + int from_tty; +{ + monitor_open (args, &dbug_cmds, from_tty); +} + +void +_initialize_dbug_rom () +{ + init_monitor_ops (&dbug_ops); + + dbug_ops.to_shortname = "dbug"; + dbug_ops.to_longname = "dBUG monitor"; + dbug_ops.to_doc = "Debug via the dBUG monitor.\n\ +Specify the serial device it is connected to (e.g. /dev/ttya)."; + dbug_ops.to_open = dbug_open; + + add_target (&dbug_ops); +} |