Interface routines for Lucid's tool protocol.
This commit is contained in:
Stu Grossman
parent
a846ac554c
commit
1744d4eb1c
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/* Cadillac interface routines.
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Copyright 1986, 1987, 1988, 1989, 1990, 1991, 1992 Free Software Foundation, Inc.
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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., 675 Mass Ave, Cambridge, MA 02139, USA. */
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#include <stdio.h>
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#include <sys/types.h>
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#include <sys/time.h>
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#include <sys/param.h>
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#include <connection.h>
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#include <genericreq.h>
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#include <debuggerreq.h>
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#include <debuggerconn.h>
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#include <ttyconn.h>
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/* Connection block for debugger<=>kernel communications. */
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static Connection *conn = 0;
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/* fd for our socket to the kernel. */
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static int kerfd;
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/* The kernel's ID for this instance of the program. */
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static int program_id;
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/* This routine redirects the output of fputs_filtered to the kernel so that
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the user can see what's going on in his debugger window. */
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void
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cadillac_fputs(ptr)
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char *ptr;
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{
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CTtyRequest *req;
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if (conn)
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{
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req = CWriteTtyRequest (conn, TextIORType);
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CWriteVstring0 (conn, ptr);
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CWriteLength (conn);
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/* CWriteRequestBuffer (conn); /* XXX - debugging only */
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}
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else
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fputs (ptr, stdout);
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}
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/* This wrapper routine is needed because execute_command modifies the command
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string that it's given. It also echos the commands. */
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static void
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execute_command_1 (cmd, from_tty)
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char *cmd;
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int from_tty;
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{
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char buf[100];
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printf_filtered("%s\n", cmd);
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strcpy(buf, cmd);
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execute_command(buf, from_tty);
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}
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/* Establish contact with the kernel. */
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void
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cadillac_initialize(cadillac_id, execarg)
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char *cadillac_id;
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char *execarg;
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{
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CTtyRequest *req;
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char *ctmp;
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extern long strtol(char *str, char **ptr, int base);
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char pathname[MAXPATHLEN];
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if (!execarg) execarg = "";
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printf("gdb-debugger pid=%d\n", getpid()); /* XXX - debugging only */
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/* First establish the connection with the kernel. */
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kerfd = COpenClientSocket(NULL);
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if (kerfd < 0) {
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printf("COpenClientSocket() failed\n");
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exit(1);
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}
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/* Setup connection buffering. */
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CSetSocketBufferSize (kerfd, 12000);
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/* Generate a new connection control block. */
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conn = NewConnection (0, kerfd, kerfd);
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if (!conn) {
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printf("NewConnection() failed\n");
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exit(1);
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}
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/* Tell the kernel that we are the "debugger". */
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req = CWriteTtyRequest (conn, QueryConnectionRType);
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req->generic.queryconnection.major = 0;
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req->generic.queryconnection.minor = 0;
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req->generic.queryconnection.cadillacId1=strtol(cadillac_id, &ctmp, 16);
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req->generic.queryconnection.cadillacId2 = strtol(++ctmp, NULL, 16);
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req->generic.queryconnection.nProtocols = 1;
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CWriteProtocol (conn, 0, 0, "debugger");
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CWriteLength (conn);
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/* Tell the kernel that we are actually running. */
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/* KROCK ALERT!!! The kernel doesn't really care about the arguments to
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the program at all! It only cares that argument 7 be the name of the
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target program. So, we just fill in the rest of the slots with
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padding. I hope the kernel never cares about this! */
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req = CWriteTtyRequest (conn, RunningProgramRType);
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req->runningprogram.argc = 8;
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getwd (pathname);
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CWriteVstring0 (conn, pathname);
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CWriteVstring0 (conn, "0");
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CWriteVstring0 (conn, "1");
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CWriteVstring0 (conn, "2");
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CWriteVstring0 (conn, "3");
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CWriteVstring0 (conn, "4");
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CWriteVstring0 (conn, "5");
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CWriteVstring0 (conn, "6");
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CWriteVstring0 (conn, execarg);
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CWriteLength (conn);
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}
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/* All requests from the Cadillac kernel eventually end up here. */
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void
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cadillac_main_loop(pprompt)
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char **pprompt;
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{
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CTtyRequest *req;
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extern int cadillac;
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/* The actual event loop! */
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while (1)
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{
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register CHeader *head;
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fd_set readfds;
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int numfds;
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fputs_filtered(*pprompt, stdout); /* Output the prompt */
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/* Output all pending requests. */
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CWriteRequestBuffer (conn);
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/* Wait till there's some activity from the kernel. */
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while (1)
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{
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FD_ZERO (&readfds);
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FD_SET (kerfd, &readfds);
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numfds = select (sizeof(readfds)*8, &readfds, 0, 0, 0);
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if (numfds > 0) break;
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}
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head = (CHeader *)CPeekNextRequest (conn);
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if (head == NULL)
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{
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fprintf (stderr, "EOF on kernel read!\n");
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exit (1);
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}
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if (head->reqType < LastTtyRequestRType)
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{
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CTtyRequest* req = CReadTtyRequest (conn);
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switch (req->head.reqType)
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{
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case AcceptConnectionRType:
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CSkipRequest (conn);
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/* Tell the rest of the world that cadillac is now set up */
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cadillac = 1;
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break;
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case RefuseConnectionRType:
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fprintf (stderr, "Debugger connection refused\n");
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exit (1);
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case KillProgramRType:
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exit (0);
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default:
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fprintf_filtered(stderr, "Unknown request type = %d\n",
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req->head.reqType);
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CSkipRequest (conn);
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break;
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}
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}
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else
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{
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CVDebuggerRequest *req = CVReadDebuggerRequest (conn);
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if (!req)
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{
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fprintf (stderr, "CVReadDebuggerRequest returned NULL, type = %d\n",
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head->reqType);
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return;
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}
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switch (req->head.request->reqType)
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{
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case OpenProgramInstanceRType:
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{
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char *arglist, buf[100]; /* XXX - Make buf dynamic! */
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int arglen;
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/* XXX - should notice when program_id changes */
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program_id = req->openProgramInstance.request->programId;
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arglist = req->openProgramInstance.progArglist.text;
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arglen = req->openProgramInstance.progArglist.byteLen;
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execute_command_1("break main", 1);
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if (arglist)
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{
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sprintf(buf, "set args %.*s", arglen, arglist);
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fputs_filtered(*pprompt, stdout); /* Output the prompt */
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execute_command_1(buf, 1);
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}
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fputs_filtered(*pprompt, stdout); /* Output the prompt */
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execute_command_1("run", 1);
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}
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break;
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case QuitDebuggerRType:
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exit (0);
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case RunRType:
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execute_command_1("run", 1);
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break;
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case ContinueRType:
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execute_command_1("continue", 1);
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break;
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case StepRType:
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execute_command_1("step", 1);
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break;
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case NextRType:
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execute_command_1("next", 1);
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break;
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case ChangeStackFrameRType:
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printf_filtered("Got to ChangeStackFrame\n");
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break;
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case BackTraceRType:
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execute_command_1("backtrace", 1);
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break;
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case FinishRType:
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execute_command_1("finish", 1);
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break;
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case TerminateProgramRType:
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execute_command_1("quit", 1);
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break;
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case UserInputRType:
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{
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char *text;
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long len;
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text = req->userInput.userInput.text;
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len = req->userInput.userInput.byteLen;
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if (text[len-1] == '\n') text[len-1] = '\000';
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execute_command (text, 1);
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break;
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}
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default:
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fprintf_filtered(stderr, "Unknown request type = %d\n",
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req->head.request->reqType);
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break;
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}
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CVFreeDebuggerRequest (req);
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}
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}
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}
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