-/* Cadillac interface routines.
- Copyright 1986, 1987, 1988, 1989, 1990, 1991, 1992 Free Software Foundation, Inc.
+/* Energize (formerly known as Cadillac) interface routines.
+ Copyright 1991, 1992 Free Software Foundation, Inc.
This file is part of GDB.
along with this program; if not, write to the Free Software
Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. */
-#include <stdio.h>
+#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 <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;
/* The kernel's ID for this instance of the program. */
static int program_id;
-\f
+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
+
+\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;
+ 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;
- if (conn)
+ 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)
{
- req = CWriteTtyRequest (conn, TextIORType);
- CWriteVstring0 (conn, ptr);
- CWriteLength (conn);
-/* CWriteRequestBuffer (conn); /* XXX - debugging only */
+ 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);
}
+}
+\f
+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
- fputs (ptr, stdout);
+ 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);
}
-/* This wrapper routine is needed because execute_command modifies the command
- string that it's given. It also echos the commands. */
+/* 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 */
+}
+\f
+/* 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;
+}
+
+\f
+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
-execute_command_1 (cmd, from_tty)
+queue_command(cmd)
char *cmd;
- int from_tty;
{
- char buf[100];
+ 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;
+}
- printf_filtered("%s\n", cmd);
- strcpy(buf, cmd);
- execute_command(buf, from_tty);
+/* 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);
+}
+\f
+/* 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");
+}
+\f
+/* 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! */
+ }
+}
+\f
+/* 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;
+}
+\f
+/* 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;
+ }
+}
+\f
/* Establish contact with the kernel. */
void
char *ctmp;
extern long strtol(char *str, char **ptr, int base);
char pathname[MAXPATHLEN];
+ int n;
if (!execarg) execarg = "";
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);
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);
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);
}
-/* All requests from the Cadillac kernel eventually end up here. */
+/* 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_main_loop(pprompt)
- char **pprompt;
+cadillac_call_command(cmdblk, arg, from_tty)
+ struct cmd_list_element *cmdblk;
+ char *arg;
+ int from_tty;
{
- CTtyRequest *req;
- extern int cadillac;
+ 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);
- /* The actual event loop! */
+ print_prompt();
+}
+
+void
+cadillac_new_process()
+{
+ instance_id = inferior_pid;
+}
+static void
+iosig(signo)
+ int signo;
+{
while (1)
{
- register CHeader *head;
- fd_set readfds;
- int numfds;
+ int eventmask;
- fputs_filtered(*pprompt, stdout); /* Output the prompt */
+ eventmask = wait_for_events(1);
- /* Output all pending requests. */
- CWriteRequestBuffer (conn);
+ if (eventmask == 0)
+ return;
- /* 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;
- }
+ if (eventmask & PTY_EVENT)
+ pty_to_kernel();
- head = (CHeader *)CPeekNextRequest (conn);
- if (head == NULL)
- {
- fprintf (stderr, "EOF on kernel read!\n");
- exit (1);
- }
+ if (eventmask & KERNEL_EVENT)
+ kernel_dispatch(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;
+int
+cadillac_wait(status)
+ int *status;
+{
+ int pid;
- case RefuseConnectionRType:
- fprintf (stderr, "Debugger connection refused\n");
- exit (1);
+ signal(SIGIO, iosig);
- case KillProgramRType:
- exit (0);
+ pid = wait(status);
- 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;
- }
+ signal(SIGIO, SIG_DFL);
+ return pid;
+}
- 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;
+static void
+null_routine(arg)
+ int arg;
+{
+}
- text = req->userInput.userInput.text;
- len = req->userInput.userInput.byteLen;
+/* All requests from the Cadillac kernel eventually end up here. */
- 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);
+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);
}
}
projects / deliverable / binutils-gdb.git / blobdiff