212 lines
6.2 KiB
C
212 lines
6.2 KiB
C
/* Remote debugging interface for PPCbug (PowerPC) Rom monitor
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for GDB, the GNU debugger.
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Copyright 1995 Free Software Foundation, Inc.
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Written by Stu Grossman of Cygnus Support
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This file is part of GDB.
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This program is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 2 of the License, or
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(at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program; if not, write to the Free Software
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Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */
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#include "defs.h"
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#include "gdbcore.h"
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#include "target.h"
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#include "monitor.h"
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#include "serial.h"
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static void ppcbug_open PARAMS ((char *args, int from_tty));
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static void
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ppcbug_supply_register (regname, regnamelen, val, vallen)
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char *regname;
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int regnamelen;
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char *val;
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int vallen;
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{
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int regno = 0, base = 0;
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if (regnamelen < 2 || regnamelen > 4)
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return;
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switch (regname[0])
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{
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case 'R':
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if (regname[1] < '0' || regname[1] > '9')
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return;
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if (regnamelen == 2)
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regno = regname[1] - '0';
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else if (regnamelen == 3 && regname[2] >= '0' && regname[2] <= '9')
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regno = (regname[1] - '0') * 10 + (regname[2] - '0');
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else
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return;
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break;
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case 'F':
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if (regname[1] != 'R' || regname[2] < '0' || regname[2] > '9')
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return;
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if (regnamelen == 3)
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regno = 32 + regname[2] - '0';
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else if (regnamelen == 4 && regname[3] >= '0' && regname[3] <= '9')
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regno = 32 + (regname[2] - '0') * 10 + (regname[3] - '0');
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else
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return;
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break;
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case 'I':
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if (regnamelen != 2 || regname[1] != 'P')
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return;
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regno = 64;
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break;
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case 'M':
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if (regnamelen != 3 || regname[1] != 'S' || regname[2] != 'R')
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return;
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regno = 65;
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break;
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case 'C':
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if (regnamelen != 2 || regname[1] != 'R')
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return;
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regno = 66;
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break;
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case 'S':
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if (regnamelen != 4 || regname[1] != 'P' || regname[2] != 'R')
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return;
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else if (regname[3] == '8')
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regno = 67;
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else if (regname[3] == '9')
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regno = 68;
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else if (regname[3] == '1')
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regno = 69;
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else if (regname[3] == '0')
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regno = 70;
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else
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return;
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break;
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default:
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return;
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}
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monitor_supply_register (regno, val);
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}
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/*
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* This array of registers needs to match the indexes used by GDB. The
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* whole reason this exists is because the various ROM monitors use
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* different names than GDB does, and don't support all the
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* registers either. So, typing "info reg sp" becomes an "A7".
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*/
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static char *ppcbug_regnames[NUM_REGS] =
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{
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"r0", "r1", "r2", "r3", "r4", "r5", "r6", "r7",
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"r8", "r9", "r10", "r11", "r12", "r13", "r14", "r15",
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"r16", "r17", "r18", "r19", "r20", "r21", "r22", "r23",
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"r24", "r25", "r26", "r27", "r28", "r29", "r30", "r31",
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"fr0", "fr1", "fr2", "fr3", "fr4", "fr5", "fr6", "fr7",
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"fr8", "fr9", "fr10", "fr11", "fr12", "fr13", "fr14", "fr15",
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"fr16", "fr17", "fr18", "fr19", "fr20", "fr21", "fr22", "fr23",
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"fr24", "fr25", "fr26", "fr27", "fr28", "fr29", "fr30", "fr31",
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/* pc ps cnd lr cnt xer mq */
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"ip", "msr", "cr", "spr8", "spr9", "spr1", "spr0"
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};
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/*
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* Define the monitor command strings. Since these are passed directly
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* through to a printf style function, we need can include formatting
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* strings. We also need a CR or LF on the end.
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*/
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static struct target_ops ppcbug_ops;
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static char *ppcbug_inits[] = {"\r", NULL};
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static struct monitor_ops ppcbug_cmds =
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{
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/* use read single because PPCBUG insists on emiting
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the word in character notation after the hex. */
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MO_CLR_BREAK_USES_ADDR | MO_GETMEM_READ_SINGLE,
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ppcbug_inits, /* Init strings */
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"g\r", /* continue command */
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"t\r", /* single step */
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NULL, /* interrupt command */
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"br %x\r", /* set a breakpoint */
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"nobr %x\r", /* clear a breakpoint */
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"nobr\r", /* clear all breakpoints */
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"bf %x:%x %x;b\r", /* fill (start count val) */
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{
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"ms %x %02x\r", /* setmem.cmdb (addr, value) */
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"ms %x %04x\r", /* setmem.cmdw (addr, value) */
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"ms %x %08x\r", /* setmem.cmdl (addr, value) */
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NULL, /* setmem.cmdll (addr, value) */
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NULL, /* setreg.resp_delim */
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NULL, /* setreg.term */
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NULL, /* setreg.term_cmd */
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},
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{
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"md %x;b\r", /* getmem.cmdb addr */
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"md %x;h\r", /* getmem.cmdw addr */
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"md %x;w\r", /* getmem.cmdl addr */
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"md %x:2;w\r", /* getmem.cmdll addr */
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" ", /* getmem.resp_delim */
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NULL, /* getmem.term */
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NULL, /* getmem.term_cmd */
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},
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{
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"rs %s %x\r", /* setreg.cmd (name, value) */
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NULL, /* setreg.resp_delim */
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NULL, /* setreg.term */
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NULL /* setreg.term_cmd */
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},
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{
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"rs %s\r", /* getreg.cmd (name) */
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"=", /* getreg.resp_delim */
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NULL, /* getreg.term */
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NULL /* getreg.term_cmd */
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},
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"rd\r", /* dump_registers */
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"\\(\\w+\\) +=\\([0-9a-fA-F]+\\b\\)", /* register_pattern */
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ppcbug_supply_register, /* supply_register */
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NULL, /* load_routine (defaults to SRECs) */
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"lo 0\r", /* download command */
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NULL, /* load response */
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"PPC1-Bug>", /* monitor command prompt */
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"\r", /* end-of-line terminator */
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NULL, /* optional command terminator */
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&ppcbug_ops, /* target operations */
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SERIAL_1_STOPBITS, /* number of stop bits */
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ppcbug_regnames, /* registers names */
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MONITOR_OPS_MAGIC /* magic */
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};
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static void
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ppcbug_open(args, from_tty)
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char *args;
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int from_tty;
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{
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monitor_open (args, &ppcbug_cmds, from_tty);
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}
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void
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_initialize_ppcbug_rom ()
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{
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init_monitor_ops (&ppcbug_ops);
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ppcbug_ops.to_shortname = "ppcbug";
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ppcbug_ops.to_longname = "PowerPC PPCBug monitor";
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ppcbug_ops.to_doc = "Debug via the PowerPC PPCBug monitor.\n\
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Specify the serial device it is connected to (e.g. /dev/ttya).";
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ppcbug_ops.to_open = ppcbug_open;
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add_target (&ppcbug_ops);
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}
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