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-rwxr-xr-xgdb/cadillac.c1474
1 files changed, 0 insertions, 1474 deletions
diff --git a/gdb/cadillac.c b/gdb/cadillac.c
index 4f59924..e69de29 100755
--- a/gdb/cadillac.c
+++ b/gdb/cadillac.c
@@ -1,1474 +0,0 @@
-/* Energize (formerly known as Cadillac) interface routines.
- Copyright 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 "defs.h"
-#include "symtab.h"
-#include "inferior.h"
-#include "command.h"
-#include "bfd.h"
-#include "symfile.h"
-#include "objfiles.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>
-#include <varargs.h>
-#include <sys/stat.h>
-#ifdef USG
-#include <sys/file.h>
-#endif
-#include <fcntl.h>
-#include <sys/filio.h>
-#include <setjmp.h>
-#include <signal.h>
-#include <sys/errno.h>
-#include <termios.h>
-#include <string.h>
-
-/* Non-zero means that we're doing the cadillac interface. */
-int cadillac = 0;
-
-/* 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;
-
-static int instance_id;
-
-/* The fd for the pty associated with the inferior. */
-static int inferior_pty = -1;
-static int inferior_tty = -1;
-
-static int has_run = 0;
-
-extern int pgrp_inferior;
-
-extern char *source_path;
-
-char **pprompt; /* Pointer to pointer to prompt */
-
-/* Tell cadillac_command_line_input() where to get its text from */
-static int doing_breakcommands_message = 0;
-
-/* Stash command text here */
-static char *command_line_text = 0;
-static int command_line_length = 0;
-
-/* Flags returned by wait_for_events() */
-#define KERNEL_EVENT 1
-#define PTY_EVENT 2
-
-
-/* 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)
- const char *ptr;
-{
- if (conn)
- CVWriteTranscriptInfo (conn, instance_id, (char *)ptr);
- else
- fputs (ptr, stdout);
-}
-
-void
-cadillac_query(query, args)
- char *query;
- va_list args;
-{
- char buf[100];
-
- vsprintf(buf, query, args);
-
- CVWriteQueryInfo(conn,
- instance_id,
- CQueryConfirm,
- qno_unknown,
- buf,
- ""); /* transcript */
-}
-
-void
-cadillac_acknowledge_query(ack)
- char *ack;
-{
- CVWriteQueryInfo(conn,
- instance_id,
- CQueryAcknowleged,
- 0,
- ack,
- ""); /* transcript */
-}
-
-/* Copy all data from the pty to the kernel. */
-
-static void
-pty_to_kernel()
-{
- CTtyRequest *req;
- char buf[1024];
- int cc;
-
- while (1)
- {
- cc = read(inferior_pty, buf, sizeof(buf));
-
- if (cc == 0
- || (cc < 0
- && errno == EWOULDBLOCK))
- break;
-
- if (cc < 0)
- {
- close(inferior_pty);
- inferior_pty = -1;
- perror("pty read error");
- break;
- }
-
- req = CWriteTtyRequest(conn, TextIORType);
- CWriteVstringLen(conn, buf, cc);
- CWriteLength(conn);
- }
- CWriteRequestBuffer(conn);
-}
-
-/* Copy data from the kernel to the pty. */
-
-static void
-kernel_to_pty(data, len)
- char *data;
- int len;
-{
- int cc;
-
- cc = write(inferior_pty, data, len);
-
- if (cc != len)
- {
- if (cc < 0)
- {
- close(inferior_pty);
- inferior_pty = -1;
- perror("pty write error");
- return;
- }
- printf("Couldn't write all the data to the pty, wanted %d, got %d\n",
- len, cc);
- }
-}
-
-static char *
-full_filename(symtab)
- struct symtab *symtab;
-{
- int pathlen;
- char *filename;
-
- if (!symtab)
- return NULL;
-
- if (symtab->fullname)
- return savestring(symtab->fullname, strlen(symtab->fullname));
-
- if (symtab->dirname)
- pathlen = strlen(symtab->dirname);
- else
- pathlen = 0;
- if (symtab->filename)
- pathlen += strlen(symtab->filename);
-
- filename = xmalloc(pathlen+1);
-
- if (symtab->dirname)
- strcpy(filename, symtab->dirname);
- else
- *filename = '\000';
- if (symtab->filename)
- strcat(filename, symtab->filename);
-
- return filename;
-}
-
-/* Tell the cadillac kernel how high the stack is so that frame numbers (which
- are relative to the current stack height make sense.
-
- Calculate the number of frames on the stack, and the number of subroutine
- invocations that haven't changed since the last call to this routine. The
- second number is calculated by comparing the PCs of the current stack frames
- to the PCs of the previous set of stack frames. The screw here is that a
- subroutine may call several different procedures, which means that the PC
- in its frame changes, even though you are still in the same subroutine. We
- resolve this by converting the frames PC into the PC at the start of the
- function (for efficiency, this is done only if the simple comparison test
- fails). */
-
-struct pclist
-{
- CORE_ADDR pc;
- struct pclist *next;
-};
-
-/* Non-zero means that Cadillac kernel already knows how high the stack is. */
-static int stack_info_valid = 0;
-
-static void
-send_stack_info()
-{
- struct pclist *pclist = 0, *pli, *opli;
- static struct pclist *old_pclist;
- FRAME frame;
- int height, similar;
-
- if (stack_info_valid)
- return;
-
- height = 0;
- similar = 0;
-
-/* First, calculate the stack height, and build the new pclist */
-
- for (frame = get_current_frame();
- frame != 0;
- frame = get_prev_frame(frame))
- {
- (height)++;
- pli = (struct pclist *)xmalloc(sizeof(struct pclist));
-
- pli->pc = frame->pc;
- pli->next = pclist;
- pclist = pli;
- }
-
-/* Now, figure out how much of the stack hasn't changed */
-
- for (pli = pclist, opli = old_pclist;
- pli != 0 && opli != 0;
- pli = pli->next, opli = opli->next, (similar)++)
- {
- if ((pli->pc != opli->pc)
- && (get_pc_function_start(pli->pc)
- != get_pc_function_start(opli->pc)))
- break;
- }
-
-/* Free up all elements of the old pclist */
-
- opli = old_pclist;
-
- while (opli)
- {
- pli = opli->next;
- free (opli);
- opli = pli;
- }
-
- old_pclist = pclist; /* Install the new pclist */
-
- CVWriteStackSizeInfo(conn,
- instance_id,
- height, /* Frame depth */
- CInnerFrameIs0,
- similar, /* Frame diff */
- "" /* Transcript */
- );
-
- stack_info_valid = 1;
-}
-
-/* Tell the kernel where we are in the program, and what the stack looks like.
- */
-
-static void
-send_status()
-{
- static int linecount = 48;
- struct symtab_and_line sal;
- struct symbol *symbol;
- char *funcname, *filename;
- static int sent_prog_inst = 0;
-
- if (!has_run)
- return;
-
- if (inferior_pid == 0) /* target has died */
- {
- CVWriteProgramTerminatedInfo(conn,
- instance_id,
- ""
- );
- return;
- }
-
- sal = find_pc_line(stop_pc, 0);
- symbol = find_pc_function(stop_pc);
-
- funcname = symbol ? symbol->name : "";
- filename = full_filename(sal.symtab);
-
- if (!sent_prog_inst)
- {
- sent_prog_inst = 1;
- CVWriteProgramInstanceInfo(conn,
- program_id,
- instance_id,
- "", /* hostname */
- "", /* arglist */
- ""
- );
- }
-
- send_stack_info();
-
- CVWriteStackFrameInfo(conn,
- instance_id,
- sal.line,
- CFileLinePos,
- 0, /* XXX - frame # */
- funcname,
- filename,
- "" /* XXX ? transcript */
- );
-
- CVWriteProgramStoppedInfo(conn,
- instance_id,
- 0, /* XXX - breakpoint # or signal # */
- CDebuggerCommand,
- funcname,
- "" /* XXX ? transcript */
- );
-
- if (filename)
- free(filename);
-}
-
-/* Call this to output annotated function names. Names will be demangled if
- necessary. arg_mode contains flags that are passed on to cplus_demangle. */
-
-void
-cadillac_annotate_function(funcname, arg_mode, level)
- char *funcname;
- int arg_mode;
- int level;
-{
- extern int demangle;
- char *demangled_name = NULL;
-
-
- if (funcname == NULL)
- return;
-
- if (demangle)
- {
- demangled_name = cplus_demangle(funcname, arg_mode);
-
- if (demangled_name)
- funcname = demangled_name;
- }
-
- send_stack_info();
-
- if (level < 0) level = 0;
-
- CVWriteBackTraceEntryInfo(conn,
- instance_id,
- level, /* frameNo */
- funcname);
-
- if (demangled_name)
- free(demangled_name);
-}
-
-/* Call this just prior to printing out the name & value of a variable. This
- tells the kernel where to annotate the output. */
-
-/* The args are:
- expression - A text handle on what GDB can use to reference this value.
- This can be a symbol name, or a convenience var, etc...
- symbol - Used to determine the scope of the data. May be NULL.
- type - Determines if we have a pointer ref, and the print name of the type.
- Used in ShowValue message.
- valaddr - The address in target memory of the data.
- field - The field name of the struct or union element being referenced.
-*/
-
-static char cum_expr[200]; /* Cumulative expression */
-static char *expr_stack[100] = {cum_expr}; /* Pointers to end of expressions */
-static char **last_expr = expr_stack; /* Current expr stack pointer */
-
-void
-cadillac_start_variable_annotation(expression, symbol, type, valaddr, field)
- char *expression;
- struct symbol *symbol;
- struct type *type;
- CORE_ADDR valaddr;
- char *field;
-{
- int ref_type;
- int stor_cl;
- enum type_code type_code;
- enum address_class sym_class;
- char *type_cast;
-
- send_stack_info();
-
- strcpy(*last_expr++, expression);
- *last_expr = *(last_expr-1) + strlen(expression);
-
- switch (TYPE_CODE(type))
- {
- case TYPE_CODE_ARRAY:
- case TYPE_CODE_STRUCT:
- case TYPE_CODE_UNION:
- case TYPE_CODE_ENUM:
- case TYPE_CODE_INT:
- case TYPE_CODE_FLT:
- ref_type = CValueValueRef;
- break;
- case TYPE_CODE_PTR:
- ref_type = CValuePointerRef;
- break;
- default:
- ref_type = CValueUndefRef;
- break;
- }
-
-/* Make sure that pointer points at something we understand */
-
- if (ref_type == CValuePointerRef)
- switch (TYPE_CODE(TYPE_TARGET_TYPE(type)))
- {
- case TYPE_CODE_PTR:
- case TYPE_CODE_ARRAY:
- case TYPE_CODE_STRUCT:
- case TYPE_CODE_UNION:
- case TYPE_CODE_ENUM:
- case TYPE_CODE_INT:
- case TYPE_CODE_FLT:
- break;
- default:
- ref_type = CValueUndefRef;
- break;
- }
-
- if (symbol)
- {
- sym_class = SYMBOL_CLASS(symbol);
-
- switch (sym_class)
- {
- case LOC_CONST:
- case LOC_CONST_BYTES:
- stor_cl = CValueStorStaticConst;
- break;
- case LOC_STATIC:
- stor_cl = CValueStorStaticVar;
- break;
- case LOC_REGISTER:
- case LOC_REGPARM:
- stor_cl = CValueStorRegister;
- break;
- case LOC_ARG:
- case LOC_REF_ARG:
- case LOC_LOCAL:
- case LOC_LOCAL_ARG:
- stor_cl = CValueStorLocalVar;
- break;
- default:
- stor_cl = CValueStorUndef;
- break;
- }
- }
- else
- stor_cl = CValueStorUndef;
-
- type_cast = TYPE_NAME(type);
-
- CVWriteValueBeginInfo(conn,
- instance_id,
- valaddr,
- ref_type,
- stor_cl,
- 0, /* XXX - frameno */
- cum_expr,
- field,
- type_cast,
- ""); /* transcript */
-}
-
-void
-cadillac_end_variable_annotation()
-{
- last_expr--; /* Pop the expr stack */
- **last_expr = '\000'; /* Cut off the last part of the expr */
-
- CVWriteValueEndInfo(conn,
- instance_id,
- ""); /* transcript */
-}
-
-/* Tell the kernel that the target is now running. */
-
-static void
-go_busy()
-{
- CVWriteProgramBusyInfo(conn,
- instance_id,
- ""); /* XXX ? transcript */
- CWriteRequestBuffer(conn); /* Must take place synchronusly! */
- stack_info_valid = 0;
-}
-
-
-void
-cadillac_symbol_file(objfile)
- struct objfile *objfile;
-{
- CVWriteSymbolTableInfo(conn,
- objfile->name,
- ""); /* Transcript */
-}
-
-/* execute_command_1(echo, queue, cmd, args) - echo - non-zero means echo the
- command. queue - non-zero means don't execute it now, just save it away for
- later. cmd - string containing printf control sequences. args - list of
- arguments needed by those control sequences.
- */
-
-/* Linked list of queued up commands */
-static struct command_line *queued_commands = 0;
-static struct command_line *last_queued_command = 0;
-
-/* Call this routine to save a command for later. The command string is
- copied into freshly malloc'ed memory. */
-
-static void
-queue_command(cmd)
- char *cmd;
-{
- char *buf;
- struct command_line *cl;
- unsigned long s;
-
- s = (strlen(cmd) + 1) + 7 & ~(unsigned long)7;
-
- buf = (char *)xmalloc(s + sizeof(struct command_line));
- cl = (struct command_line *)(buf + s);
- cl->next = 0;
- cl->line = buf;
-
- strncpy(cl->line, cmd, s);
-
- if (queued_commands)
- last_queued_command->next = cl;
- else
- queued_commands = cl;
-
- last_queued_command = cl;
-}
-
-/* Call this procedure to take a command off of the command queue. It returns
- a pointer to a buf which the caller is responsible for freeing. NULL is
- returned if there are no commands queued. */
-
-static char *
-dequeue_command()
-{
- struct command_line *cl;
- char *cmd;
-
- cl = queued_commands;
-
- if (!cl)
- return NULL;
-
- queued_commands = cl->next;
-
- return cl->line;
-}
-
-static void
-execute_command_1(va_alist)
- va_dcl
-{
- char buf[100]; /* XXX - make buf dynamic! */
-
- int echo;
- int queue;
- char *cmd;
- va_list args;
-
- va_start(args);
-
- echo = va_arg(args, int);
- queue = va_arg(args, int);
- cmd = va_arg(args, char *);
-
- vsprintf(buf, cmd, args);
-
- if (queue)
- queue_command(buf);
- else
- {
- if (echo)
- printf_filtered("%s\n", buf);
- execute_command(buf, 1);
- }
-
- va_end(args);
-}
-
-#ifdef KERNEL_RECORD
-FILE *kerout;
-
-static int
-kernel_record(fd, ptr, num)
- int fd, num;
- char *ptr;
-
-{
- fwrite(ptr, num, 1, kerout);
- fflush(kerout);
- return write(fd, ptr, num);
-}
-#endif
-
-void
-cadillac_condition_breakpoint(b)
- struct breakpoint *b;
-{
- CVWriteBreakConditionInfo(conn,
- instance_id,
- b->number,
- b->cond_string ? b->cond_string : "",
- "" /* transcript */
- );
-}
-
-void
-cadillac_commands_breakpoint(b)
- struct breakpoint *b;
-{
- struct command_line *l;
-
- CVWriteBreakCommandBegInfo(conn,
- instance_id,
- b->number,
- ""); /* transcript */
-
- for (l = b->commands; l; l = l->next)
- CVWriteBreakCommandEntryInfo(conn,
- instance_id,
- l->line,
- ""); /* transcript */
-
- CVWriteBreakCommandEndInfo(conn,
- instance_id,
- ""); /* transcript */
-}
-
-static void
-breakpoint_notify(b, action)
- struct breakpoint *b;
- int action;
-{
- struct symbol *sym;
- char *funcname = "";
- char *filename;
- char *included_in_filename = "";
-
- if (b->type != bp_breakpoint)
- return;
-
- filename = full_filename(b->symtab);
-
- sym = find_pc_function(b->address);
- if (sym)
- funcname = SYMBOL_NAME(sym);
-
- CVWriteBreakpointInfo (conn,
- instance_id,
- b->number,
- b->line_number,
- CFileLinePos,
- CBreakOnInstrAccess,
- action,
- b->ignore_count,
- funcname,
- filename ? filename : "",
- "", /* included_in_filename */
- "" /* transcript */
- );
-
- if (b->commands)
- cadillac_commands_breakpoint(b);
-
- cadillac_condition_breakpoint(b);
-
- if (filename)
- free(filename);
-}
-
-void
-cadillac_create_breakpoint(b)
- struct breakpoint *b;
-{
- breakpoint_notify(b, CEnableBreakpoint);
-}
-
-void
-cadillac_delete_breakpoint(b)
- struct breakpoint *b;
-{
- breakpoint_notify(b, CDeleteBreakpoint);
-}
-
-void
-cadillac_enable_breakpoint(b)
- struct breakpoint *b;
-{
- breakpoint_notify(b, CEnableBreakpoint);
-}
-
-void
-cadillac_disable_breakpoint(b)
- struct breakpoint *b;
-{
- breakpoint_notify(b, CDisableBreakpoint);
-}
-
-void
-cadillac_ignore_breakpoint(b)
- struct breakpoint *b;
-{
- breakpoint_notify(b, CBreakAttrUnchanged);
-}
-
-/* Open up a pty and its associated tty. Return the fd of the tty. */
-
-static void
-getpty()
-{
- int n, ptyfd, ttyfd;
- static char dev[30];
- struct stat statbuf;
- struct termios termios;
-
-#define HIGHPTY (('z' - 'p') * 16 - 1)
-
- for (n = 0; n <= HIGHPTY; n++)
- {
- sprintf(dev, "/dev/pty%c%x", n/16 + 'p', n%16);
- if (stat(dev, &statbuf))
- break;
- ptyfd = open(dev, O_RDWR);
- if (ptyfd < 0)
- continue;
- sprintf(dev, "/dev/tty%c%x", n/16 + 'p', n%16);
- ttyfd = open(dev, O_RDWR);
- if (ttyfd < 0) {close(ptyfd); continue;}
-
- /* Setup pty for non-blocking I/O. Also make it give us a SIGIO when
- there's data available. */
-
- n = fcntl(ptyfd, F_GETFL, 0);
- fcntl(ptyfd, F_SETFL, n|FNDELAY|FASYNC);
- fcntl(ptyfd, F_SETOWN, getpid());
-
- tcgetattr(ttyfd, &termios);
- termios.c_oflag &= ~OPOST; /* No post-processing */
- tcsetattr(ttyfd, TCSANOW, &termios);
-
- inferior_pty = ptyfd;
- inferior_tty = ttyfd;
- return;
- }
-
- error ("getpty: can't get a pty\n");
-}
-
-/* Examine a protocol packet from the driver. */
-
-static void
-kernel_dispatch(queue)
- int queue; /* Non-zero means we should just queue up
- commands. */
-{
- register CHeader *head;
-
- 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:
- /* Tell the rest of the world that cadillac is now set up */
- CSkipRequest (conn);
- break;
-
- case RefuseConnectionRType:
- fprintf (stderr, "Debugger connection refused\n");
- exit (1);
-
- case KillProgramRType:
- exit (0);
-
- case TextIORType:
- {
- char *p;
- ReqLen len;
-
- p = CGetVstring(conn, &len);
- kernel_to_pty(p, len);
- }
- break;
- default:
- fprintf(stderr, "Unknown request type = %d\n",
- req->head.reqType);
- break;
- }
- }
- else
- {
- CVDebuggerRequest *req = CVReadDebuggerRequest (conn);
- if (!req)
- {
- fprintf (stderr, "CVReadDebuggerRequest returned NULL, type = %d\n",
- head->reqType);
- exit(1);
- }
-
- switch (req->head.request->reqType)
- {
- case OpenProgramInstanceRType:
- {
- char *arglist, buf[100]; /* XXX - Make buf dynamic! */
- int arglen;
- /* XXX - should notice when program_id changes */
- arglist = req->openProgramInstance.progArglist.text;
- arglen = req->openProgramInstance.progArglist.byteLen;
-
- execute_command_1(1, queue, "break main");
- execute_command_1(1, queue, "enable delete $bpnum");
- if (arglist)
- {
- execute_command_1(1, queue, "set args %.*s", arglen, arglist);
- }
- execute_command_1(1, queue, "run");
- }
- break;
- case SearchPathRType:
- directory_command(req->searchPath.searchPath.text, 0);
- break;
- case QuitDebuggerRType:
- execute_command_1(1, queue, "quit");
- break;
- case RunRType:
- if (req->run.request->useArglist == CNewArglist)
- {
- execute_command_1(1, queue, "set args %.*s",
- req->run.progArglist.byteLen,
- req->run.progArglist.text);
- }
- execute_command_1(1, queue, "run");
- break;
- case ContinueRType:
- execute_command_1(1, queue, "continue");
- break;
- case StepRType:
- execute_command_1(1, queue, "step %d", req->step.request->stepCount);
- break;
- case NextRType:
- execute_command_1(1, queue, "next %d", req->next.request->nextCount);
- break;
- case ChangeStackFrameRType:
- switch (req->changeStackFrame.request->frameMovement)
- {
- case CToCurrentStackFrame:
- execute_command_1(1, queue, "frame %d",
- req->changeStackFrame.request->frameNo);
- break;
- case CToInnerStackFrame:
- execute_command_1(1, queue, "down %d",
- req->changeStackFrame.request->frameNo);
- break;
- case CToOuterStackFrame:
- execute_command_1(1, queue, "up %d",
- req->changeStackFrame.request->frameNo);
- break;
- case CToAbsoluteStackFrame:
- execute_command_1(1, queue, "frame %d",
- req->changeStackFrame.request->frameNo);
- break;
- }
- break;
- case BackTraceRType:
- /* XXX - deal with limit??? */
- execute_command_1(1, queue, "backtrace");
- break;
- case FinishRType:
- execute_command_1(1, queue, "finish");
- break;
- case TerminateProgramRType:
- execute_command_1(1, queue, "kill");
- break;
- case NewBreakpointRType:
- {
- char *tail;
- int skipped;
-
- tail = strrchr(req->newBreakpoint.fileName.text, '/');
- if (!tail)
- tail = req->newBreakpoint.fileName.text;
- else
- tail++;
- skipped = tail - req->newBreakpoint.fileName.text;
- execute_command_1(1, queue, "break %.*s:%d",
- req->newBreakpoint.fileName.byteLen - skipped,
- tail,
- req->newBreakpoint.request->fileLinePos);
- }
- break;
- case StopRType:
- killpg(pgrp_inferior, SIGINT);
- break;
- case UserInputRType:
- {
- char *text;
- long len;
-
- /* XXX - should really break command up into seperate lines
- and spoon-feed it to execute_command */
-
- text = req->userInput.userInput.text;
- len = req->userInput.userInput.byteLen;
-
- if (text[len-1] == '\n') text[len-1] = '\000';
-
- while (*text == ' ' || *text == '\t') text++;
-
- if (strcmp(text, "]*[") == 0) /* XXX - What does this mean??? */
- break;
-
- if (*text != '\000')
- execute_command_1(0, queue, "%s", text);
- else
- print_prompt(); /* User just typed a blank line */
- }
- break;
- case QueryResponseRType:
- {
- char *resp;
-
- if (req->queryResponse.request->response)
- resp = "y";
- else
- resp = "n";
- execute_command_1(1, 1, resp);
- printf_filtered("%s\n", resp);
- }
- break;
- case ChangeBreakpointRType:
- switch (req->changeBreakpoint.request->breakpointAttr)
- {
- case CBreakAttrUnchanged:
- execute_command_1(1, queue, "ignore %d %d",
- req->changeBreakpoint.request->breakpointId,
- req->changeBreakpoint.request->ignoreCount);
- break;
- case CEnableBreakpoint:
- execute_command_1(1, queue, "enable %d",
- req->changeBreakpoint.request->breakpointId);
- break;
- case CDisableBreakpoint:
- execute_command_1(1, queue, "disable %d",
- req->changeBreakpoint.request->breakpointId);
- break;
- case CDeleteBreakpoint:
- execute_command_1(1, queue, "delete %d",
- req->changeBreakpoint.request->breakpointId);
- break;
- case CEnableDisableBreakpoint:
- execute_command_1(1, queue, "enable once %d",
- req->changeBreakpoint.request->breakpointId);
- break;
- case CEnableDeleteBreakpoint:
- execute_command_1(1, queue, "enable delete %d",
- req->changeBreakpoint.request->breakpointId);
- break;
- default:
- printf_filtered("ChangeBreakpointRType: unknown breakpointAttr\n");
- printf_filtered(" breakpointAttr = %d\n",
- req->changeBreakpoint.request->breakpointAttr);
- printf_filtered(" breakpointId = %d\n",
- req->changeBreakpoint.request->breakpointId);
- printf_filtered(" breakpointType = %d\n",
- req->changeBreakpoint.request->breakpointType);
- printf_filtered(" ignoreCount = %d\n",
- req->changeBreakpoint.request->ignoreCount);
- break;
- }
- break;
- case BreakConditionRType:
- execute_command_1(1, queue, "condition %d %.*s",
- req->breakCondition.request->breakpointId,
- req->breakCondition.condition.byteLen,
- req->breakCondition.condition.text);
- break;
- case BreakCommandsRType:
- /* Put pointers to where cadillac_command_line_input() can find
- them. */
- doing_breakcommands_message = 1;
- command_line_length = req->breakCommands.commands.byteLen;
- command_line_text = req->breakCommands.commands.text;
- execute_command_1(1, queue, "commands %d",
- req->breakCommands.request->breakpointId);
- command_line_text = (char *)NULL;
- command_line_length = 0;
- doing_breakcommands_message = 0;
- break;
- case ShowValueRType:
- {
- char expr[100], *p = expr;
-
- expr[0] = 0;
-
- if (req->showValue.request->ref_type == CValuePointerRef)
- strcat(expr, "* ");
-
- if (req->showValue.type_cast.byteLen)
- {
- strcat(expr, "(");
- strncat(expr, req->showValue.type_cast.text,
- req->showValue.type_cast.byteLen);
- strcat(expr, ") ");
- }
-
- if (req->showValue.field.byteLen)
- strcat(expr, "(");
-
- strncat(expr, req->showValue.expression.text,
- req->showValue.expression.byteLen);
-
- if (req->showValue.field.byteLen)
- {
- strcat(expr, ")");
-
- strncat(expr, req->showValue.field.text,
- req->showValue.field.byteLen);
- }
-
- execute_command_1(1, queue, "print %s", expr);
- }
- break;
- case SetValueRType:
- {
- char expr[100], *p = expr;
-
- expr[0] = 0;
-
- if (req->setValue.request->ref_type == CValuePointerRef)
- strcat(expr, "* ");
-
-#if 0
- if (req->setValue.type_cast.byteLen)
- {
- strcat(expr, "(");
- strncat(expr, req->setValue.type_cast.text,
- req->setValue.type_cast.byteLen);
- strcat(expr, ") ");
- }
-#endif
- if (req->setValue.field.byteLen)
- strcat(expr, "(");
-
- strncat(expr, req->setValue.expression.text,
- req->setValue.expression.byteLen);
-
- if (req->setValue.field.byteLen)
- {
- strcat(expr, ")");
-
- strncat(expr, req->setValue.field.text,
- req->setValue.field.byteLen);
- }
-
- execute_command_1(1, queue, "print %s = (%s) %s", expr,
- req->setValue.type_cast.text,
- req->setValue.value.text);
- }
- break;
- default:
- fprintf(stderr, "Unknown request type = %d\n",
- req->head.request->reqType);
- break;
- }
- free (req); /* Should probably call CVFreeDebuggerRequest() here, but
- can't do so if interrupt level has mucked with req->
- request. CVFreeDebuggerRequest() only ends up calling
- free() anyway! */
- }
-}
-
-/* Return a bitmask indicating if the kernel or the pty did something
- interesting. Set poll to non-zero if you don't want to wait. */
-
-static int
-wait_for_events(poll)
- int poll;
-{
- fd_set readfds;
- int numfds;
- int eventmask = 0;
- static struct timeval tv = {0};
-
- /* Output all pending requests. */
- CWriteRequestBuffer(conn);
-
- FD_ZERO(&readfds);
-
- /* Wait till there's some activity from the kernel or the pty. */
- do
- {
- FD_SET(kerfd, &readfds);
- if (inferior_pty > 0)
- FD_SET(inferior_pty, &readfds);
- if (poll)
- numfds = select(sizeof(readfds)*8, &readfds, 0, 0, &tv);
- else
- numfds = select(sizeof(readfds)*8, &readfds, 0, 0, 0);
- }
- while (numfds <= 0 && !poll);
-
- if (FD_ISSET(inferior_pty, &readfds))
- eventmask |= PTY_EVENT;
-
- if (FD_ISSET(kerfd, &readfds))
- eventmask |= KERNEL_EVENT;
-
- return eventmask;
-}
-
-/* This is called from read_command_lines() to provide the text for breakpoint
- commands, which is supplied in a BreakCommands message. Each call to this
- routine supplies a single line of text, with the newline removed. */
-
-/* This routine may be invoked in two different contexts. In the first, it
- is being called as a result of the BreakCommands message. In this case,
- all of the command text is immediately available. In the second case, it is
- called as a result of the user typing the 'command' command. The command
- text then needs to be glommed out of UserInput messages (and possibly other
- messages as well). The most 'straighforward' way of doing this is to
- basically simulate the main loop, but just accumulate the command text
- instead of sending it to execute_command(). */
-
-char *
-cadillac_command_line_input()
-{
- char *p;
-
- if (doing_breakcommands_message)
- {
- if (command_line_length <= 0)
- return (char *)NULL;
-
- p = command_line_text;
-
- while (command_line_length-- > 0)
- {
- if (*command_line_text == '\n')
- {
- *command_line_text = '\000';
- command_line_text++;
- break;
- }
- command_line_text++;
- }
-
- printf_filtered("%s\n", p);
- return p;
- }
- else
- {
- /* We come here when the user has typed the 'command' or 'define' command
- to the GDB window. We are basically deep inside of the 'command'
- command processing routine right now, and will be called to get a new
- line of input. We expect that kernel_dispatch will queue up only one
- command at a time. */
-
- int eventmask;
- static char buf[100];
-
- eventmask = wait_for_events(0);
-
- if (eventmask & PTY_EVENT)
- pty_to_kernel();
-
- if (eventmask & KERNEL_EVENT)
- kernel_dispatch(1); /* Queue up commands */
-
-/* Note that command has been echoed by the time we get here */
-
- p = dequeue_command();
-
- if (p)
- {
- strncpy(buf, p, sizeof(buf));
- free(p);
- return buf;
- }
- else
- return NULL;
- }
-}
-
-/* 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];
- int n;
-
- 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 for I/O interrupts when appropriate. */
-
- n = fcntl(kerfd, F_GETFL, 0);
- fcntl(kerfd, F_SETFL, n|FASYNC);
- fcntl(kerfd, F_SETOWN, getpid());
-
- /* 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);
- }
-
-#ifdef KERNEL_RECORD
- kerout = fopen("kernel.output", "+w");
-
- CReadWriteHooks(conn, conn->previewMethod, conn->readMethod, kernel_record);
-#endif
-
- /* 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);
-
- /* Tell the kernel our PID and all that */
-
- program_id = 1;
- CVWriteDebugProgramInfo(conn,
- getpid(),
- program_id,
- execarg,
- "");
-
- /* Tell the rest of the world that Cadillac is now set up. */
- cadillac = 1;
-
- setsid(); /* Drop controlling tty, become pgrp master */
- getpty(); /* Setup the pty */
- dup2(inferior_tty, 0); /* Attach all GDB I/O to the pty */
- dup2(inferior_tty, 1);
- dup2(inferior_tty, 2);
-}
-
-/* This is called from execute_command, and provides a wrapper around
- various command routines in a place where both protocol messages and
- user input both flow through.
-*/
-
-void
-cadillac_call_command(cmdblk, arg, from_tty)
- struct cmd_list_element *cmdblk;
- char *arg;
- int from_tty;
-{
- if (cmdblk->class == class_run)
- {
- go_busy();
- has_run = 1;
- (*cmdblk->function.cfunc)(arg, from_tty);
- send_status();
- }
- else
- (*cmdblk->function.cfunc)(arg, from_tty);
-
- print_prompt();
-}
-
-void
-cadillac_new_process()
-{
- instance_id = inferior_pid;
-}
-
-static void
-iosig(signo)
- int signo;
-{
- while (1)
- {
- int eventmask;
-
- eventmask = wait_for_events(1);
-
- if (eventmask == 0)
- return;
-
- if (eventmask & PTY_EVENT)
- pty_to_kernel();
-
- if (eventmask & KERNEL_EVENT)
- kernel_dispatch(1);
- }
-}
-
-int
-cadillac_wait(status)
- int *status;
-{
- int pid;
-
- signal(SIGIO, iosig);
-
- pid = wait(status);
-
- signal(SIGIO, SIG_DFL);
- return pid;
-}
-
-static void
-null_routine(arg)
- int arg;
-{
-}
-
-/* All requests from the Cadillac kernel eventually end up here. */
-
-void
-cadillac_main_loop()
-{
- CTtyRequest *req;
- struct cleanup *old_chain;
-
- doing_breakcommands_message = 0;
-
-/* We will come thru here any time there is an error, so send status if
- necessary. */
-
- send_status();
-
- print_prompt();
-
- /* The actual event loop! */
-
- while (1)
- {
- int eventmask;
- char *cmd;
-
- old_chain = make_cleanup(null_routine, 0);
-
-/* First, empty out the command queue, then check for new requests. */
-
- while (cmd = dequeue_command())
- {
- execute_command_1(1, 0, cmd);
- free(cmd);
- }
-
- eventmask = wait_for_events(0);
-
- if (eventmask & PTY_EVENT)
- pty_to_kernel();
-
- if (eventmask & KERNEL_EVENT)
- kernel_dispatch(0);
-
- bpstat_do_actions(&stop_bpstat);
- do_cleanups(old_chain);
- }
-}
generated by cgit v1.1 at 2024-12-15 06:21:30 +0000