gdb/ppcbug-rom.c - gdb

Global variables defined

Functions defined

Source code

  1. /* Remote debugging interface for PPCbug (PowerPC) Rom monitor
  2.    for GDB, the GNU debugger.
  3.    Copyright (C) 1995-2015 Free Software Foundation, Inc.

  5.    Written by Stu Grossman of Cygnus Support

  7.    This file is part of GDB.

  9.    This program is free software; you can redistribute it and/or modify
  10.    it under the terms of the GNU General Public License as published by
  11.    the Free Software Foundation; either version 3 of the License, or
  12.    (at your option) any later version.

  14.    This program is distributed in the hope that it will be useful,
  15.    but WITHOUT ANY WARRANTY; without even the implied warranty of
  16.    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  17.    GNU General Public License for more details.

  19.    You should have received a copy of the GNU General Public License
  20.    along with this program.  If not, see <http://www.gnu.org/licenses/>.  */

  22. #include "defs.h"
  23. #include "gdbcore.h"
  24. #include "target.h"
  25. #include "monitor.h"
  26. #include "serial.h"
  27. #include "regcache.h"

  29. static void
  30. ‌ppcbug_supply_register (struct regcache *regcache, char *regname,
  31.                         int regnamelen, char *val, int vallen)
  32. {
  33.   int regno = 0;

  35.   if (regnamelen < 2 || regnamelen > 4)
  36.     return;

  38.   switch (regname[0])
  39.     {
  40.     case 'R':
  41.       if (regname[1] < '0' || regname[1] > '9')
  42.         return;
  43.       if (regnamelen == 2)
  44.         regno = regname[1] - '0';
  45.       else if (regnamelen == 3 && regname[2] >= '0' && regname[2] <= '9')
  46.         regno = (regname[1] - '0') * 10 + (regname[2] - '0');
  47.       else
  48.         return;
  49.       break;
  50.     case 'F':
  51.       if (regname[1] != 'R' || regname[2] < '0' || regname[2] > '9')
  52.         return;
  53.       if (regnamelen == 3)
  54.         regno = 32 + regname[2] - '0';
  55.       else if (regnamelen == 4 && regname[3] >= '0' && regname[3] <= '9')
  56.         regno = 32 + (regname[2] - '0') * 10 + (regname[3] - '0');
  57.       else
  58.         return;
  59.       break;
  60.     case 'I':
  61.       if (regnamelen != 2 || regname[1] != 'P')
  62.         return;
  63.       regno = 64;
  64.       break;
  65.     case 'M':
  66.       if (regnamelen != 3 || regname[1] != 'S' || regname[2] != 'R')
  67.         return;
  68.       regno = 65;
  69.       break;
  70.     case 'C':
  71.       if (regnamelen != 2 || regname[1] != 'R')
  72.         return;
  73.       regno = 66;
  74.       break;
  75.     case 'S':
  76.       if (regnamelen != 4 || regname[1] != 'P' || regname[2] != 'R')
  77.         return;
  78.       else if (regname[3] == '8')
  79.         regno = 67;
  80.       else if (regname[3] == '9')
  81.         regno = 68;
  82.       else if (regname[3] == '1')
  83.         regno = 69;
  84.       else if (regname[3] == '0')
  85.         regno = 70;
  86.       else
  87.         return;
  88.       break;
  89.     default:
  90.       return;
  91.     }

  93.   monitor_supply_register (regcache, regno, val);
  94. }

  96. /*
  97. * This array of registers needs to match the indexes used by GDB.  The
  98. * whole reason this exists is because the various ROM monitors use
  99. * different names than GDB does, and don't support all the
  100. * registers either.  So, typing "info reg sp" becomes an "A7".
  101. */

  103. ‌static char *ppcbug_regnames[] =
  104. {
  105.   "r0", "r1", "r2", "r3", "r4", "r5", "r6", "r7",
  106.   "r8", "r9", "r10", "r11", "r12", "r13", "r14", "r15",
  107.   "r16", "r17", "r18", "r19", "r20", "r21", "r22", "r23",
  108.   "r24", "r25", "r26", "r27", "r28", "r29", "r30", "r31",

  110.   "fr0", "fr1", "fr2", "fr3", "fr4", "fr5", "fr6", "fr7",
  111.   "fr8", "fr9", "fr10", "fr11", "fr12", "fr13", "fr14", "fr15",
  112.   "fr16", "fr17", "fr18", "fr19", "fr20", "fr21", "fr22", "fr23",
  113.   "fr24", "fr25", "fr26", "fr27", "fr28", "fr29", "fr30", "fr31",

  115. /* pc      ps      cnd     lr      cnt     xer     mq */
  116.   "ip", "msr", "cr", "spr8", "spr9", "spr1", "spr0"
  117. };

  119. /*
  120. * Define the monitor command strings.  Since these are passed directly
  121. * through to a printf style function, we need can include formatting
  122. * strings.  We also need a CR or LF on the end.
  123. */

  125. ‌static struct target_ops ppcbug_ops0;
  126. ‌static struct target_ops ppcbug_ops1;

  128. ‌static char *ppcbug_inits[] =
  129. {"\r", NULL};

  131. static void
  132. ‌init_ppc_cmds (char *LOAD_CMD,
  133.                struct monitor_ops *OPS,
  134.                struct target_ops *targops)
  135. {
  136.   OPS->flags = MO_CLR_BREAK_USES_ADDR | MO_HANDLE_NL;
  137.   OPS->init = ppcbug_inits;        /* Init strings */
  138.   OPS->cont = "g\r";                /* continue command */
  139.   OPS->step = "t\r";                /* single step */
  140.   OPS->stop = NULL;                /* interrupt command */
  141.   OPS->set_break = "br %x\r";        /* set a breakpoint */
  142.   OPS->clr_break = "nobr %x\r";        /* clear a breakpoint */
  143.   OPS->clr_all_break = "nobr\r";        /* clear all breakpoints */
  144.   OPS->fill = "bf %x:%x %x;b\r";        /* fill (start count val) */
  145.   OPS->setmem.cmdb = "ms %x %02x\r";        /* setmem.cmdb (addr, value) */
  146.   OPS->setmem.cmdw = "ms %x %04x\r";        /* setmem.cmdw (addr, value) */
  147.   OPS->setmem.cmdl = "ms %x %08x\r";        /* setmem.cmdl (addr, value) */
  148.   OPS->setmem.cmdll = NULL;        /* setmem.cmdll (addr, value) */
  149.   OPS->setmem.resp_delim = NULL;        /* setreg.resp_delim */
  150.   OPS->setmem.term = NULL;        /* setreg.term */
  151.   OPS->setmem.term_cmd = NULL;        /* setreg.term_cmd */
  152.   OPS->getmem.cmdb = "md %x:%x;b\r";        /* getmem.cmdb (addr, len) */
  153.   OPS->getmem.cmdw = "md %x:%x;b\r";        /* getmem.cmdw (addr, len) */
  154.   OPS->getmem.cmdl = "md %x:%x;b\r";        /* getmem.cmdl (addr, len) */
  155.   OPS->getmem.cmdll = NULL;        /* getmem.cmdll (addr, len) */
  156.   OPS->getmem.resp_delim = " ";        /* getmem.resp_delim */
  157.   OPS->getmem.term = NULL;        /* getmem.term */
  158.   OPS->getmem.term_cmd = NULL;        /* getmem.term_cmd */
  159.   OPS->setreg.cmd = "rs %s %x\r";        /* setreg.cmd (name, value) */
  160.   OPS->setreg.resp_delim = NULL;        /* setreg.resp_delim */
  161.   OPS->setreg.term = NULL;        /* setreg.term */
  162.   OPS->setreg.term_cmd = NULL;        /* setreg.term_cmd */
  163.   OPS->getreg.cmd = "rs %s\r";        /* getreg.cmd (name) */
  164.   OPS->getreg.resp_delim = "=";        /* getreg.resp_delim */
  165.   OPS->getreg.term = NULL;        /* getreg.term */
  166.   OPS->getreg.term_cmd = NULL;        /* getreg.term_cmd */
  167.                                 /* register_pattern */
  168.   OPS->register_pattern = "\\(\\w+\\) +=\\([0-9a-fA-F]+\\b\\)";
  169.   OPS->supply_register = ppcbug_supply_register;
  170.   OPS->dump_registers = "rd\r";        /* dump all registers */
  171.   OPS->load = LOAD_CMD;                /* download command */
  172.   OPS->loadresp = NULL;                /* load response */
  173.   OPS->prompt = "PPC1-Bug>";        /* monitor command prompt */
  174.   OPS->line_term = "\r";        /* end-of-line terminator */
  175.   OPS->cmd_end = NULL;                /* optional command terminator */
  176.   OPS->target = targops;        /* target operations */
  177.   OPS->stopbits = SERIAL_1_STOPBITS;        /* number of stop bits */
  178.   OPS->regnames = ppcbug_regnames;        /* registers names */
  179.   OPS->magic = MONITOR_OPS_MAGIC;        /* magic */
  180. }


  183. ‌static struct monitor_ops ppcbug_cmds0;
  184. ‌static struct monitor_ops ppcbug_cmds1;

  186. static void
  187. ‌ppcbug_open0 (const char *args, int from_tty)
  188. {
  189.   monitor_open (args, &ppcbug_cmds0, from_tty);
  190. }

  192. static void
  193. ‌ppcbug_open1 (const char *args, int from_tty)
  194. {
  195.   monitor_open (args, &ppcbug_cmds1, from_tty);
  196. }

  198. extern initialize_file_ftype _initialize_ppcbug_rom; /* -Wmissing-prototypes */

  200. void
  201. ‌_initialize_ppcbug_rom (void)
  202. {
  203.   init_ppc_cmds ("lo 0\r", &ppcbug_cmds0, &ppcbug_ops0);
  204.   init_ppc_cmds ("lo 1\r", &ppcbug_cmds1, &ppcbug_ops1);
  205.   init_monitor_ops (&ppcbug_ops0);

  207.   ppcbug_ops0.to_shortname = "ppcbug";
  208.   ppcbug_ops0.to_longname = "PowerPC PPCBug monitor on port 0";
  209.   ppcbug_ops0.to_doc = "Debug via the PowerPC PPCBug monitor using port 0.\n\
  210. Specify the serial device it is connected to (e.g. /dev/ttya).";
  211.   ppcbug_ops0.to_open = ppcbug_open0;

  213.   add_target (&ppcbug_ops0);

  215.   init_monitor_ops (&ppcbug_ops1);

  217.   ppcbug_ops1.to_shortname = "ppcbug1";
  218.   ppcbug_ops1.to_longname = "PowerPC PPCBug monitor on port 1";
  219.   ppcbug_ops1.to_doc = "Debug via the PowerPC PPCBug monitor using port 1.\n\
  220. Specify the serial device it is connected to (e.g. /dev/ttya).";
  221.   ppcbug_ops1.to_open = ppcbug_open1;

  223.   add_target (&ppcbug_ops1);
  224. }