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330 |
jeremybenn |
/* TUI display locator.
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Copyright (C) 1998, 1999, 2000, 2001, 2002, 2003, 2004, 2006, 2007, 2008,
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2009, 2010 Free Software Foundation, Inc.
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Contributed by Hewlett-Packard Company.
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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 3 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, see <http://www.gnu.org/licenses/>. */
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#include "defs.h"
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#include "symtab.h"
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#include "breakpoint.h"
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#include "frame.h"
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#include "command.h"
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#include "inferior.h"
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#include "target.h"
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#include "top.h"
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#include "gdb_string.h"
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#include "tui/tui.h"
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#include "tui/tui-data.h"
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#include "tui/tui-stack.h"
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#include "tui/tui-wingeneral.h"
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#include "tui/tui-source.h"
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#include "tui/tui-winsource.h"
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#include "tui/tui-file.h"
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#include "gdb_curses.h"
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/* Get a printable name for the function at the address.
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The symbol name is demangled if demangling is turned on.
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Returns a pointer to a static area holding the result. */
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static char *tui_get_function_from_frame (struct frame_info *fi);
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/* Set the filename portion of the locator. */
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static void tui_set_locator_filename (const char *filename);
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/* Update the locator, with the provided arguments. */
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static void tui_set_locator_info (struct gdbarch *gdbarch,
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const char *filename,
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const char *procname,
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int lineno, CORE_ADDR addr);
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static void tui_update_command (char *, int);
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/* Create the status line to display as much information as we can on
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this single line: target name, process number, current function,
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current line, current PC, SingleKey mode. */
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static char*
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tui_make_status_line (struct tui_locator_element *loc)
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{
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char *string;
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char line_buf[50], *pname;
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char *buf;
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int status_size;
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int i, proc_width;
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const char *pid_name;
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const char *pc_buf;
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int target_width;
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int pid_width;
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int line_width;
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int pc_width;
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struct ui_file *pc_out;
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if (ptid_equal (inferior_ptid, null_ptid))
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pid_name = "No process";
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else
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pid_name = target_pid_to_str (inferior_ptid);
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target_width = strlen (target_shortname);
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if (target_width > MAX_TARGET_WIDTH)
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target_width = MAX_TARGET_WIDTH;
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pid_width = strlen (pid_name);
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if (pid_width > MAX_PID_WIDTH)
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pid_width = MAX_PID_WIDTH;
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status_size = tui_term_width ();
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string = (char *) xmalloc (status_size + 1);
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buf = (char*) alloca (status_size + 1);
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/* Translate line number and obtain its size. */
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if (loc->line_no > 0)
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sprintf (line_buf, "%d", loc->line_no);
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else
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strcpy (line_buf, "??");
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line_width = strlen (line_buf);
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if (line_width < MIN_LINE_WIDTH)
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line_width = MIN_LINE_WIDTH;
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/* Translate PC address. */
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pc_out = tui_sfileopen (128);
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fputs_filtered (loc->gdbarch? paddress (loc->gdbarch, loc->addr) : "??",
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pc_out);
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pc_buf = tui_file_get_strbuf (pc_out);
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pc_width = strlen (pc_buf);
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/* First determine the amount of proc name width we have available.
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The +1 are for a space separator between fields.
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The -1 are to take into account the \0 counted by sizeof. */
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proc_width = (status_size
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- (target_width + 1)
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- (pid_width + 1)
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- (sizeof (PROC_PREFIX) - 1 + 1)
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- (sizeof (LINE_PREFIX) - 1 + line_width + 1)
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- (sizeof (PC_PREFIX) - 1 + pc_width + 1)
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- (tui_current_key_mode == TUI_SINGLE_KEY_MODE
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? (sizeof (SINGLE_KEY) - 1 + 1)
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: 0));
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/* If there is no room to print the function name, try by removing
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some fields. */
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if (proc_width < MIN_PROC_WIDTH)
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{
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proc_width += target_width + 1;
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target_width = 0;
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if (proc_width < MIN_PROC_WIDTH)
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{
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proc_width += pid_width + 1;
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pid_width = 0;
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if (proc_width <= MIN_PROC_WIDTH)
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{
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proc_width += pc_width + sizeof (PC_PREFIX) - 1 + 1;
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pc_width = 0;
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if (proc_width < 0)
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{
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proc_width += line_width + sizeof (LINE_PREFIX) - 1 + 1;
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line_width = 0;
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if (proc_width < 0)
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proc_width = 0;
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}
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}
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}
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}
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/* Now convert elements to string form. */
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pname = loc->proc_name;
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/* Now create the locator line from the string version of the
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elements. We could use sprintf() here but that wouldn't ensure
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that we don't overrun the size of the allocated buffer.
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strcat_to_buf() will. */
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*string = (char) 0;
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if (target_width > 0)
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{
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sprintf (buf, "%*.*s ",
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-target_width, target_width, target_shortname);
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strcat_to_buf (string, status_size, buf);
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}
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if (pid_width > 0)
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{
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sprintf (buf, "%*.*s ",
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-pid_width, pid_width, pid_name);
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strcat_to_buf (string, status_size, buf);
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}
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/* Show whether we are in SingleKey mode. */
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if (tui_current_key_mode == TUI_SINGLE_KEY_MODE)
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{
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strcat_to_buf (string, status_size, SINGLE_KEY);
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strcat_to_buf (string, status_size, " ");
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}
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/* Procedure/class name. */
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if (proc_width > 0)
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{
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if (strlen (pname) > proc_width)
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sprintf (buf, "%s%*.*s* ", PROC_PREFIX,
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1 - proc_width, proc_width - 1, pname);
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else
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sprintf (buf, "%s%*.*s ", PROC_PREFIX,
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-proc_width, proc_width, pname);
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strcat_to_buf (string, status_size, buf);
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}
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if (line_width > 0)
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{
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sprintf (buf, "%s%*.*s ", LINE_PREFIX,
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-line_width, line_width, line_buf);
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strcat_to_buf (string, status_size, buf);
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}
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if (pc_width > 0)
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{
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strcat_to_buf (string, status_size, PC_PREFIX);
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strcat_to_buf (string, status_size, pc_buf);
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}
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for (i = strlen (string); i < status_size; i++)
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string[i] = ' ';
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string[status_size] = (char) 0;
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ui_file_delete (pc_out);
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return string;
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}
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/* Get a printable name for the function at the address. The symbol
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name is demangled if demangling is turned on. Returns a pointer to
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a static area holding the result. */
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static char*
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tui_get_function_from_frame (struct frame_info *fi)
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{
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static char name[256];
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struct ui_file *stream = tui_sfileopen (256);
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char *p;
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print_address_symbolic (get_frame_arch (fi), get_frame_pc (fi),
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stream, demangle, "");
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p = tui_file_get_strbuf (stream);
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/* Use simple heuristics to isolate the function name. The symbol
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can be demangled and we can have function parameters. Remove
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them because the status line is too short to display them. */
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if (*p == '<')
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p++;
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strncpy (name, p, sizeof (name));
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p = strchr (name, '(');
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if (!p)
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p = strchr (name, '>');
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if (p)
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*p = 0;
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p = strchr (name, '+');
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if (p)
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*p = 0;
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ui_file_delete (stream);
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return name;
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}
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void
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tui_show_locator_content (void)
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{
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char *string;
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struct tui_gen_win_info *locator;
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locator = tui_locator_win_info_ptr ();
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if (locator != NULL && locator->handle != (WINDOW *) NULL)
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{
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struct tui_win_element *element;
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element = (struct tui_win_element *) locator->content[0];
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string = tui_make_status_line (&element->which_element.locator);
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wmove (locator->handle, 0, 0);
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/* We ignore the return value from wstandout and wstandend, casting
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them to void in order to avoid a compiler warning. The warning
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itself was introduced by a patch to ncurses 5.7 dated 2009-08-29,
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changing these macro to expand to code that causes the compiler
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to generate an unused-value warning. */
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(void) wstandout (locator->handle);
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waddstr (locator->handle, string);
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wclrtoeol (locator->handle);
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(void) wstandend (locator->handle);
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tui_refresh_win (locator);
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wmove (locator->handle, 0, 0);
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xfree (string);
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locator->content_in_use = TRUE;
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}
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}
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/* Set the filename portion of the locator. */
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static void
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tui_set_locator_filename (const char *filename)
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{
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struct tui_gen_win_info *locator = tui_locator_win_info_ptr ();
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struct tui_locator_element *element;
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if (locator->content[0] == NULL)
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{
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tui_set_locator_info (NULL, filename, NULL, 0, 0);
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return;
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}
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element = &((struct tui_win_element *) locator->content[0])->which_element.locator;
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element->file_name[0] = 0;
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strcat_to_buf (element->file_name, MAX_LOCATOR_ELEMENT_LEN, filename);
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}
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/* Update the locator, with the provided arguments. */
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static void
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tui_set_locator_info (struct gdbarch *gdbarch,
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const char *filename,
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const char *procname,
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int lineno,
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CORE_ADDR addr)
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{
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struct tui_gen_win_info *locator = tui_locator_win_info_ptr ();
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struct tui_locator_element *element;
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/* Allocate the locator content if necessary. */
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if (locator->content_size <= 0)
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{
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locator->content = (void **) tui_alloc_content (1, locator->type);
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locator->content_size = 1;
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}
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element = &((struct tui_win_element *) locator->content[0])->which_element.locator;
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element->proc_name[0] = (char) 0;
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strcat_to_buf (element->proc_name, MAX_LOCATOR_ELEMENT_LEN, procname);
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element->line_no = lineno;
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element->addr = addr;
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element->gdbarch = gdbarch;
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318 |
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tui_set_locator_filename (filename);
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}
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320 |
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321 |
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/* Update only the filename portion of the locator. */
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322 |
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void
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323 |
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tui_update_locator_filename (const char *filename)
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324 |
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{
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325 |
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tui_set_locator_filename (filename);
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326 |
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tui_show_locator_content ();
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}
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328 |
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329 |
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/* Function to print the frame information for the TUI. */
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330 |
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void
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tui_show_frame_info (struct frame_info *fi)
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332 |
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{
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333 |
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struct tui_win_info *win_info;
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int i;
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336 |
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if (fi)
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{
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338 |
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int start_line, i;
|
339 |
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CORE_ADDR low;
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340 |
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struct tui_gen_win_info *locator = tui_locator_win_info_ptr ();
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341 |
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int source_already_displayed;
|
342 |
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struct symtab_and_line sal;
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343 |
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344 |
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find_frame_sal (fi, &sal);
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source_already_displayed = sal.symtab != 0
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347 |
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&& tui_source_is_displayed (sal.symtab->filename);
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tui_set_locator_info (get_frame_arch (fi),
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349 |
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sal.symtab == 0 ? "??" : sal.symtab->filename,
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tui_get_function_from_frame (fi),
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sal.line,
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352 |
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get_frame_pc (fi));
|
353 |
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tui_show_locator_content ();
|
354 |
|
|
start_line = 0;
|
355 |
|
|
for (i = 0; i < (tui_source_windows ())->count; i++)
|
356 |
|
|
{
|
357 |
|
|
union tui_which_element *item;
|
358 |
|
|
|
359 |
|
|
win_info = (tui_source_windows ())->list[i];
|
360 |
|
|
|
361 |
|
|
item = &((struct tui_win_element *) locator->content[0])->which_element;
|
362 |
|
|
if (win_info == TUI_SRC_WIN)
|
363 |
|
|
{
|
364 |
|
|
start_line = (item->locator.line_no -
|
365 |
|
|
(win_info->generic.viewport_height / 2)) + 1;
|
366 |
|
|
if (start_line <= 0)
|
367 |
|
|
start_line = 1;
|
368 |
|
|
}
|
369 |
|
|
else
|
370 |
|
|
{
|
371 |
|
|
if (find_pc_partial_function (get_frame_pc (fi), (char **) NULL,
|
372 |
|
|
&low, (CORE_ADDR) 0) == 0)
|
373 |
|
|
error (_("No function contains program counter for selected frame."));
|
374 |
|
|
else
|
375 |
|
|
low = tui_get_low_disassembly_address (get_frame_arch (fi),
|
376 |
|
|
low, get_frame_pc (fi));
|
377 |
|
|
}
|
378 |
|
|
|
379 |
|
|
if (win_info == TUI_SRC_WIN)
|
380 |
|
|
{
|
381 |
|
|
struct tui_line_or_address l;
|
382 |
|
|
|
383 |
|
|
l.loa = LOA_LINE;
|
384 |
|
|
l.u.line_no = start_line;
|
385 |
|
|
if (!(source_already_displayed
|
386 |
|
|
&& tui_line_is_displayed (item->locator.line_no, win_info, TRUE)))
|
387 |
|
|
tui_update_source_window (win_info, get_frame_arch (fi),
|
388 |
|
|
sal.symtab, l, TRUE);
|
389 |
|
|
else
|
390 |
|
|
{
|
391 |
|
|
l.u.line_no = item->locator.line_no;
|
392 |
|
|
tui_set_is_exec_point_at (l, win_info);
|
393 |
|
|
}
|
394 |
|
|
}
|
395 |
|
|
else
|
396 |
|
|
{
|
397 |
|
|
if (win_info == TUI_DISASM_WIN)
|
398 |
|
|
{
|
399 |
|
|
struct tui_line_or_address a;
|
400 |
|
|
|
401 |
|
|
a.loa = LOA_ADDRESS;
|
402 |
|
|
a.u.addr = low;
|
403 |
|
|
if (!tui_addr_is_displayed (item->locator.addr, win_info, TRUE))
|
404 |
|
|
tui_update_source_window (win_info, get_frame_arch (fi),
|
405 |
|
|
sal.symtab, a, TRUE);
|
406 |
|
|
else
|
407 |
|
|
{
|
408 |
|
|
a.u.addr = item->locator.addr;
|
409 |
|
|
tui_set_is_exec_point_at (a, win_info);
|
410 |
|
|
}
|
411 |
|
|
}
|
412 |
|
|
}
|
413 |
|
|
tui_update_exec_info (win_info);
|
414 |
|
|
}
|
415 |
|
|
}
|
416 |
|
|
else
|
417 |
|
|
{
|
418 |
|
|
tui_set_locator_info (NULL, NULL, NULL, 0, (CORE_ADDR) 0);
|
419 |
|
|
tui_show_locator_content ();
|
420 |
|
|
for (i = 0; i < (tui_source_windows ())->count; i++)
|
421 |
|
|
{
|
422 |
|
|
win_info = (tui_source_windows ())->list[i];
|
423 |
|
|
tui_clear_source_content (win_info, EMPTY_SOURCE_PROMPT);
|
424 |
|
|
tui_update_exec_info (win_info);
|
425 |
|
|
}
|
426 |
|
|
}
|
427 |
|
|
}
|
428 |
|
|
|
429 |
|
|
/* Function to initialize gdb commands, for tui window stack
|
430 |
|
|
manipulation. */
|
431 |
|
|
|
432 |
|
|
/* Provide a prototype to silence -Wmissing-prototypes. */
|
433 |
|
|
extern initialize_file_ftype _initialize_tui_stack;
|
434 |
|
|
|
435 |
|
|
void
|
436 |
|
|
_initialize_tui_stack (void)
|
437 |
|
|
{
|
438 |
|
|
add_com ("update", class_tui, tui_update_command, _("\
|
439 |
|
|
Update the source window and locator to display the current execution point.\n"));
|
440 |
|
|
}
|
441 |
|
|
|
442 |
|
|
/* Command to update the display with the current execution point. */
|
443 |
|
|
static void
|
444 |
|
|
tui_update_command (char *arg, int from_tty)
|
445 |
|
|
{
|
446 |
|
|
char cmd[sizeof("frame 0")];
|
447 |
|
|
|
448 |
|
|
strcpy (cmd, "frame 0");
|
449 |
|
|
execute_command (cmd, from_tty);
|
450 |
|
|
}
|