struct ibuf *ibuf_init(void)
{
struct ibuf *s = (struct ibuf *) cgdb_malloc(sizeof (struct ibuf));
s->BLOCK_SIZE = 4096;
s->cur_block_size = 1;
s->cur_buf_pos = 0;
s->buf = (char *) cgdb_malloc(sizeof (char) * (s->BLOCK_SIZE));
s->buf[s->cur_buf_pos] = '\0';
return s;
}
/**
* This is called when GDB has finished.
* Its job is to add the type of QUIT command that is appropriate.
*
* \param tgdb
* The tgdb context
*
* \param tgdb_will_quit
* This will return as 1 if tgdb sent the TGDB_QUIT command. Otherwise 0.
*
* \return
* 0 on success or -1 on error
*/
int Ctgdb::Get_quit_command (int *tgdb_will_quit)
{
pid_t pid = tgdb_client_get_debugger_pid (tcc);
int status = 0;
pid_t ret;
struct tgdb_debugger_exit_status *tstatus;
struct tgdb_response *response = (struct tgdb_response *)
cgdb_malloc (sizeof (struct tgdb_response));
if (!tgdb_will_quit)
return -1;
*tgdb_will_quit = 0;
tstatus = (struct tgdb_debugger_exit_status *)
cgdb_malloc (sizeof (struct tgdb_debugger_exit_status));
ret = waitpid (pid, &status, WNOHANG);
if (ret == -1)
{
Logger_write_pos( __FILE__, __LINE__, "waitpid error");
return -1;
}
else if (ret == 0)
{
/* This SIGCHLD wasn't for GDB */
return 0;
}
if ((WIFEXITED (status)) == 0)
{
/* Child did not exit normally */
tstatus->exit_status = -1;
tstatus->return_value = 0;
}
else
{
tstatus->exit_status = 0;
tstatus->return_value = WEXITSTATUS (status);
}
response->header = TGDB_QUIT;
response->choice.quit.exit_status = tstatus;
tgdb_types_append_command (command_list, response);
*tgdb_will_quit = 1;
return 0;
}
static struct tgdb *initialize_tgdb_context(tgdb_callbacks callbacks)
{
struct tgdb *tgdb = (struct tgdb *) cgdb_malloc(sizeof (struct tgdb));
tgdb->c = 0;
tgdb->parser = NULL;
tgdb->control_c = 0;
tgdb->debugger_stdout = -1;
tgdb->debugger_stdin = -1;
tgdb->inferior_stdout = -1;
tgdb->inferior_stdin = -1;
tgdb->pty_pair = NULL;
tgdb->command_requests = new tgdb_request_ptr_list();
tgdb->is_gdb_ready_for_next_command = 1;
tgdb->make_console_ready_callback = true;
tgdb->has_sigchld_recv = 0;
tgdb->callbacks = callbacks;
return tgdb;
}
struct scroller *scr_new(SWINDOW *win)
{
struct scroller *rv;
rv = (struct scroller *)cgdb_malloc(sizeof(struct scroller));
rv->current.r = 0;
rv->current.c = 0;
rv->current.pos = 0;
rv->in_scroll_mode = 0;
rv->last_inferior_line = NULL;
rv->last_inferior_attr = -1;
rv->lines_to_display = 0;
rv->win = win;
rv->in_search_mode = 0;
rv->last_hlregex = NULL;
rv->hlregex = NULL;
rv->search_r = 0;
/* Start with a single (blank) line */
rv->lines = NULL;
scroller_addline(rv, strdup(""), NULL, SCR_INPUT_DEBUGGER);
rv->jump_back_mark.r = -1;
rv->jump_back_mark.c = -1;
memset(rv->marks, 0xff, sizeof(rv->marks));
return rv;
}
static void tgdb_issue_request(struct tgdb *tgdb, enum tgdb_request_type type,
bool priority)
{
tgdb_request_ptr request_ptr;
request_ptr = (tgdb_request_ptr)cgdb_malloc(sizeof (struct tgdb_request));
request_ptr->header = type;
tgdb_run_or_queue_request(tgdb, request_ptr, priority);
}
struct state_machine *state_machine_initialize ( void ) {
struct state_machine *sm = (struct state_machine * ) cgdb_malloc ( sizeof ( struct state_machine ) );
sm->tgdb_buffer = ibuf_init ();
sm->tgdb_state = DATA;
return sm;
}
/* gdb_input: Handles user input to the GDB window.
* ----------
*
* key: Keystroke received.
*
* Return Value: 0 if internal key was used,
* 1 if input to gdb or ...
* -1 : Error resizing terminal -- terminal too small
*/
static int gdb_input(int key)
{
/* Handle special keys */
switch (key) {
case CGDB_KEY_PPAGE:
scr_up(gdb_win, get_gdb_height() - 1);
break;
case CGDB_KEY_NPAGE:
scr_down(gdb_win, get_gdb_height() - 1);
break;
case CGDB_KEY_F11:
scr_home(gdb_win);
break;
case CGDB_KEY_F12:
scr_end(gdb_win);
break;
#if 0
/* I would like to add better support for control-l in the GDB
* window, but this patch didn't make me happy enough to release it.
* The problem is, when it clears the screen, it adds a lot of
* whitespace in the buffer. If you hit page-up to look back in
* the buffer, it's visible. This is really unacceptable.
*
* The approach I believe I would like to take with this, is to
* have the GDB window behave more like the terminal. That is,
* have GDB start at the top line, and move down as input
* becomes available. Then, when you hit ctrl-l, you just move
* the prompt to the top line. */
case CGDB_KEY_CTRL_L:
{
int height = get_gdb_height(), i;
/* Allocate and print enough newlines to clear the gdb buffer. */
char *buf = (char *) cgdb_malloc(sizeof (char *) * height);
for (i = 0; i < height - 1; ++i) {
buf[i] = '\n';
}
buf[i] = '\0';
if_print(buf);
free(buf);
/* Sneaky return 1 here. Basically, this allows tricks readline to think
* that gdb did not handle the Ctrl-l. That way readline will also handle
* it. Because readline uses TERM=dumb, that means that it will clear a
* single line and put out the prompt. */
return 1;
break;
}
#endif
default:
return 1;
}
if_draw();
return 0;
}
void tgdb_request_complete(struct tgdb * tgdb, const char *line)
{
tgdb_request_ptr request_ptr;
request_ptr = (tgdb_request_ptr)cgdb_malloc(sizeof (struct tgdb_request));
request_ptr->header = TGDB_REQUEST_COMPLETE;
request_ptr->choice.complete.line = (const char *)cgdb_strdup(line);
tgdb_run_or_queue_request(tgdb, request_ptr, false);
}
void tgdb_request_current_location(struct tgdb * tgdb)
{
tgdb_request_ptr request_ptr;
request_ptr = (tgdb_request_ptr)cgdb_malloc(sizeof (struct tgdb_request));
request_ptr->header = TGDB_REQUEST_INFO_FRAME;
tgdb_run_or_queue_request(tgdb, request_ptr, true);
}
void tgdb_request_inferiors_source_files(struct tgdb * tgdb)
{
tgdb_request_ptr request_ptr;
request_ptr = (tgdb_request_ptr)cgdb_malloc(sizeof (struct tgdb_request));
request_ptr->header = TGDB_REQUEST_INFO_SOURCES;
tgdb_run_or_queue_request(tgdb, request_ptr, false);
}
/**
* TGDB is going to quit.
*
* \param tgdb
* The tgdb context
*
* \return
* 0 on success or -1 on error
*/
int Ctgdb::Add_quit_command()
{
struct tgdb_debugger_exit_status *tstatus;
struct tgdb_response *response;
tstatus = (struct tgdb_debugger_exit_status *)
cgdb_malloc (sizeof (struct tgdb_debugger_exit_status));
/* Child did not exit normally */
tstatus->exit_status = -1;
tstatus->return_value = 0;
response = (struct tgdb_response *) cgdb_malloc (sizeof (struct tgdb_response));
response->header = TGDB_QUIT;
response->choice.quit.exit_status = tstatus;
tgdb_types_append_command (command_list, response);
return 0;
}
void tgdb_request_disassemble_pc(struct tgdb *tgdb, int lines)
{
tgdb_request_ptr request_ptr;
request_ptr = (tgdb_request_ptr)cgdb_malloc(sizeof (struct tgdb_request));
request_ptr->header = TGDB_REQUEST_DISASSEMBLE_PC;
request_ptr->choice.disassemble.lines = lines;
tgdb_run_or_queue_request(tgdb, request_ptr, false);
}
/**
* Create a tab completion context.
*
* \param matches
* See tab_completion field documentation
*
* \param num_matches
* See tab_completion field documentation
*
* \param max_length
* See tab_completion field documentation
*
* \return
* The next context, or NULL on error.
*/
static tab_completion_ptr
tab_completion_create(char **matches, int num_matches, int max_length)
{
int i;
tab_completion_ptr comptr;
comptr = (tab_completion_ptr) cgdb_malloc(sizeof (struct
tab_completion_ctx));
comptr->matches = cgdb_malloc(sizeof (char *) * (num_matches + 1));
for (i = 0; i <= num_matches; ++i)
comptr->matches[i] = cgdb_strdup(matches[i]);
comptr->num_matches = num_matches;
comptr->max_length = max_length;
comptr->total = 1;
comptr->lines = 0;
comptr->state = TAB_COMPLETION_START;
return comptr;
}
void
tgdb_request_run_debugger_command(struct tgdb * tgdb, enum tgdb_command_type c)
{
tgdb_request_ptr request_ptr;
request_ptr = (tgdb_request_ptr)cgdb_malloc(sizeof (struct tgdb_request));
request_ptr->header = TGDB_REQUEST_DEBUGGER_COMMAND;
request_ptr->choice.debugger_command.c = c;
tgdb_run_or_queue_request(tgdb, request_ptr, false);
}
/**
* Gets a list of source files that make up the program being debugged.
*
* This function does not actually do anything but put a command in the
* queue to be run when libtgdb is ready. When the libtgdb runs the
* command to get the inferior's source files, it will return 1 of 2
* things next time tgdb_recv is called.
*
* If the function succeeds the gui will get back TGDB_UPDATE_SOURCE_FILES
* containing a list of all the source files. Otherwise the gui will get
* back TGDB_SOURCES_DENIED.
*
* \param tgdb
* An instance of the tgdb library to operate on.
*
* \return
* Will return as a tgdb request command on success, otherwise NULL.
*/
tgdb_request_ptr Ctgdb::Request_inferiors_source_files()
{
tgdb_request_ptr request_ptr;
request_ptr = (tgdb_request_ptr)
cgdb_malloc (sizeof (struct tgdb_request));
if (!request_ptr)
return NULL;
request_ptr->header = TGDB_REQUEST_INFO_SOURCES;
return request_ptr;
}
void
tgdb_request_run_console_command(struct tgdb *tgdb, const char *command)
{
tgdb_request_ptr request_ptr;
request_ptr = (tgdb_request_ptr)cgdb_malloc(sizeof (struct tgdb_request));
request_ptr->header = TGDB_REQUEST_CONSOLE_COMMAND;
request_ptr->choice.console_command.command = (const char *)
cgdb_strdup(command);
tgdb_run_or_queue_request(tgdb, request_ptr, false);
}
void tgdb_request_disassemble_func(struct tgdb *tgdb,
enum disassemble_func_type type)
{
tgdb_request_ptr request_ptr;
request_ptr = (tgdb_request_ptr)cgdb_malloc(sizeof (struct tgdb_request));
request_ptr->header = TGDB_REQUEST_DISASSEMBLE_FUNC;
request_ptr->choice.disassemble_func.raw = (type == DISASSEMBLE_FUNC_RAW_INSTRUCTIONS);
request_ptr->choice.disassemble_func.source = (type == DISASSEMBLE_FUNC_SOURCE_LINES);
tgdb_run_or_queue_request(tgdb, request_ptr, false);
}
/**
* This will ask the debugger for it's current file and line number.
* It will return to the caller a tgdb_response with the
* response->update_source_files set. This is the same response you
* will get when TGDB asynchronously sends the update_file_postition.
*
* \param tgdb
* An instance of the tgdb library to operate on.
*
* \param on_starup
* This variable can be set to 1 if the front end wants to probe GDB
* for the initial file and location of the program being debugged.
* However, each initial time after that, this variable should be
* set to 0.
*
* \return
* Will return as a tgdb request command on success, otherwise NULL.
*/
tgdb_request_ptr Ctgdb::Request_current_location(int on_startup)
{
tgdb_request_ptr request_ptr;
request_ptr = (tgdb_request_ptr)
cgdb_malloc (sizeof (struct tgdb_request));
if (!request_ptr)
return NULL;
request_ptr->header = TGDB_REQUEST_CURRENT_LOCATION;
request_ptr->choice.current_location.on_startup = on_startup;
return request_ptr;
}
/**
* This tells libtgdb to run a command through the debugger.
*
* \param tgdb
* An instance of the tgdb library to operate on.
*
* \param c
* This is the command that libtgdb should run through the debugger.
*
* @return
* Will return as a tgdb request command on success, otherwise NULL.
*/
tgdb_request_ptr Ctgdb::Request_run_debugger_command(enum tgdb_command_type c)
{
tgdb_request_ptr request_ptr;
request_ptr = (tgdb_request_ptr)
cgdb_malloc (sizeof (struct tgdb_request));
if (!request_ptr)
return NULL;
request_ptr->header = TGDB_REQUEST_DEBUGGER_COMMAND;
request_ptr->choice.debugger_command.c = c;
return request_ptr;
}
void highlight(struct list_node *node)
{
if ( node->language == TOKENIZER_LANGUAGE_UNKNOWN ) {
/* Just copy the lines from the original buffer if no highlighting
* is possible */
int i;
node->buf.length = node->orig_buf.length;
node->buf.max_width = node->orig_buf.max_width;
node->buf.tlines = cgdb_malloc ( sizeof ( char * ) * node->orig_buf.length );
for ( i = 0; i < node->orig_buf.length; i++ )
node->buf.tlines[i] = cgdb_strdup ( node->orig_buf.tlines[i] );
} else
highlight_node ( node );
}
struct filedlg *filedlg_new(int pos_r, int pos_c, int height, int width)
{
struct filedlg *fd;
/* Allocate a new structure */
fd = (struct filedlg *)cgdb_malloc(sizeof(struct filedlg));
/* Initialize the structure */
fd->win = swin_newwin(height, width, pos_r, pos_c);
/* Initialize the buffer */
fd->buf = (struct file_buffer *)cgdb_malloc(sizeof(struct file_buffer));
fd->G_line_number = ibuf_init();
fd->last_hlregex = NULL;
fd->hlregex = NULL;
fd->buf->files = NULL;
fd->buf->max_width = 0;
fd->buf->sel_line = 0;
fd->buf->sel_col = 0;
fd->buf->sel_rline = 0;
return fd;
}
/**
* Used to get all of the possible tab completion options for LINE.
*
* \param tgdb
* An instance of the tgdb library to operate on.
*
* \param line
* The line to tab complete.
*
* \return
* Will return as a tgdb request command on success, otherwise NULL.
*/
tgdb_request_ptr Ctgdb::Request_complete(const char *line)
{
tgdb_request_ptr request_ptr;
request_ptr = (tgdb_request_ptr)
cgdb_malloc (sizeof (struct tgdb_request));
if (!request_ptr)
return NULL;
request_ptr->header = TGDB_REQUEST_COMPLETE;
request_ptr->choice.complete.line = (const char *)
cgdb_strdup (line);
return request_ptr;
}
void
tgdb_request_modify_breakpoint(struct tgdb *tgdb, const char *file, int line,
uint64_t addr, enum tgdb_breakpoint_action b)
{
tgdb_request_ptr request_ptr;
request_ptr = (tgdb_request_ptr)cgdb_malloc(sizeof (struct tgdb_request));
request_ptr->header = TGDB_REQUEST_MODIFY_BREAKPOINT;
request_ptr->choice.modify_breakpoint.file = file ? cgdb_strdup(file) : NULL;
request_ptr->choice.modify_breakpoint.line = line;
request_ptr->choice.modify_breakpoint.addr = addr;
request_ptr->choice.modify_breakpoint.b = b;
tgdb_run_or_queue_request(tgdb, request_ptr, false);
}
char *a2_client_modify_breakpoint(struct annotate_two *a2,
const char *file, int line, enum tgdb_breakpoint_action b)
{
char *val = (char *) cgdb_malloc(sizeof (char) * (strlen(file) + 128));
if (b == TGDB_BREAKPOINT_ADD) {
sprintf(val, "break \"%s\":%d", file, line);
return val;
} else if (b == TGDB_BREAKPOINT_DELETE) {
sprintf(val, "clear \"%s\":%d", file, line);
return val;
} else if (b == TGDB_TBREAKPOINT_ADD) {
sprintf(val, "tbreak \"%s\":%d", file, line);
return val;
} else
return NULL;
}
/**
* Modify's a breakpoint.
*
* \param tgdb
* An instance of the tgdb library to operate on.
*
* \param file
* The file to set the breakpoint in.
*
* \param line
* The line in FILE to set the breakpoint in.
*
* \param b
* Determines what the user wants to do with the breakpoint.
*
* @return
* Will return as a tgdb request command on success, otherwise NULL.
*/
tgdb_request_ptr Ctgdb::Request_modify_breakpoint(const char *file,
int line,
enum tgdb_breakpoint_action b)
{
tgdb_request_ptr request_ptr;
request_ptr = (tgdb_request_ptr)
cgdb_malloc (sizeof (struct tgdb_request));
if (!request_ptr)
return NULL;
request_ptr->header = TGDB_REQUEST_MODIFY_BREAKPOINT;
request_ptr->choice.modify_breakpoint.file = (const char *)
cgdb_strdup (file);
request_ptr->choice.modify_breakpoint.line = line;
request_ptr->choice.modify_breakpoint.b = b;
return request_ptr;
}
/**
* This sends a console command to the debugger (GDB).
*
* \param tgdb
* An instance of the tgdb library to operate on.
*
* \param command
* The null terminated command to pass to GDB as a console command.
*
* \return
* Will return as a tgdb request command on success, otherwise NULL.
*/
tgdb_request_ptr Ctgdb::Request_run_console_command(const char *command)
{
tgdb_request_ptr request_ptr;
if (!command)
return NULL;
request_ptr = (tgdb_request_ptr)
cgdb_malloc (sizeof (struct tgdb_request));
if (!request_ptr)
return NULL;
request_ptr->header = TGDB_REQUEST_CONSOLE_COMMAND;
request_ptr->choice.console_command.command = (const char *)
cgdb_strdup (command);
return request_ptr;
}
struct tgdb_command *
tgdb_command_create (const char *tgdb_command_data,
enum tgdb_command_choice command_choice,
void *client_data)
{
struct tgdb_command *tc;
tc = (struct tgdb_command *)cgdb_malloc ( sizeof ( struct tgdb_command ) );
if (tgdb_command_data)
tc->tgdb_command_data = strdup (tgdb_command_data);
else
tc->tgdb_command_data = NULL;
tc->command_choice = command_choice;
tc->tgdb_client_private_data = client_data;
return tc;
}
/* initialize_annotate_two
*
* initializes an annotate_two subsystem and sets up all initial values.
*/
static struct annotate_two *initialize_annotate_two(void)
{
struct annotate_two *a2 = (struct annotate_two *)
cgdb_malloc(sizeof (struct annotate_two));
a2->tgdb_initialized = 0;
a2->debugger_stdin = -1;
a2->debugger_out = -1;
a2->pty_pair = NULL;
/* null terminate */
a2->config_dir[0] = '\0';
a2->a2_gdb_init_file[0] = '\0';
a2->cur_response_list = NULL;
return a2;
}
int
cgdbrc_attach(enum cgdbrc_option_kind option, cgdbrc_notify notify, int *handle)
{
struct cgdbrc_attach_item *item = (struct cgdbrc_attach_item *)
cgdb_malloc(sizeof (struct cgdbrc_attach_item));
item->option = option;
item->handle = cgdbrc_attach_handle++;
item->notify_hook = notify;
if (!cgdbrc_attach_list)
cgdbrc_attach_list = std_list_create(destroy_notify);
std_list_append(cgdbrc_attach_list, item);
if (handle)
*handle = item->handle;
return 0;
}
int
rline_get_keyseq (struct rline *rline, const char *named_function,
std_list keyseq_list)
{
rl_command_func_t *func;
char **invoking_keyseqs = NULL;
char **invoking_keyseqs_cur = NULL;
char *new_keyseq = NULL;
int len;
if (!keyseq_list)
return -1;
func = rl_named_function (named_function);
if (func == 0)
return 0;
invoking_keyseqs = rl_invoking_keyseqs (func);
invoking_keyseqs_cur = invoking_keyseqs;
while (invoking_keyseqs_cur && (*invoking_keyseqs_cur)) {
new_keyseq = (char *)cgdb_malloc ((2 * strlen (*invoking_keyseqs_cur)) + 1);
if (rl_translate_keyseq (*invoking_keyseqs_cur, new_keyseq, &len))
{
free (new_keyseq);
free (*invoking_keyseqs_cur);
/* Can't do much about readline failing, just continue on. */
continue;
}
/* If the append function breaks, in serious trouble */
std_list_append (keyseq_list, new_keyseq);
free (*invoking_keyseqs_cur);
invoking_keyseqs_cur++;
}
free (invoking_keyseqs);
return 0;
}
