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