675 lines
19 KiB
C
675 lines
19 KiB
C
/* TUI display source/assembly window.
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Copyright (C) 1998, 1999, 2000, 2001, 2002, 2003, 2004 Free Software
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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 2 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, write to the Free Software
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Foundation, Inc., 51 Franklin Street, Fifth Floor,
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Boston, MA 02110-1301, USA. */
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#include "defs.h"
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#include <ctype.h>
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#include "symtab.h"
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#include "frame.h"
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#include "breakpoint.h"
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#include "value.h"
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#include "source.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-win.h"
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#include "tui/tui-wingeneral.h"
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#include "tui/tui-winsource.h"
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#include "tui/tui-source.h"
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#include "tui/tui-disasm.h"
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#include "gdb_string.h"
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#include "gdb_curses.h"
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#include "gdb_assert.h"
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/* Function to display the "main" routine. */
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void
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tui_display_main (void)
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{
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if ((tui_source_windows ())->count > 0)
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{
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CORE_ADDR addr;
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addr = tui_get_begin_asm_address ();
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if (addr != (CORE_ADDR) 0)
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{
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struct symtab_and_line sal;
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tui_update_source_windows_with_addr (addr);
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sal = find_pc_line (addr, 0);
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if (sal.symtab)
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tui_update_locator_filename (sal.symtab->filename);
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else
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tui_update_locator_filename ("??");
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}
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}
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}
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/* Function to display source in the source window. This function
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initializes the horizontal scroll to 0. */
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void
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tui_update_source_window (struct tui_win_info * win_info, struct symtab *s,
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struct tui_line_or_address line_or_addr, int noerror)
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{
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win_info->detail.source_info.horizontal_offset = 0;
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tui_update_source_window_as_is (win_info, s, line_or_addr, noerror);
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return;
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}
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/* Function to display source in the source/asm window. This function
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shows the source as specified by the horizontal offset. */
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void
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tui_update_source_window_as_is (struct tui_win_info * win_info, struct symtab *s,
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struct tui_line_or_address line_or_addr, int noerror)
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{
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enum tui_status ret;
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if (win_info->generic.type == SRC_WIN)
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ret = tui_set_source_content (s, line_or_addr.u.line_no, noerror);
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else
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ret = tui_set_disassem_content (line_or_addr.u.addr);
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if (ret == TUI_FAILURE)
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{
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tui_clear_source_content (win_info, EMPTY_SOURCE_PROMPT);
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tui_clear_exec_info_content (win_info);
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}
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else
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{
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tui_update_breakpoint_info (win_info, 0);
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tui_show_source_content (win_info);
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tui_update_exec_info (win_info);
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if (win_info->generic.type == SRC_WIN)
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{
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struct symtab_and_line sal;
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sal.line = line_or_addr.u.line_no +
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(win_info->generic.content_size - 2);
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sal.symtab = s;
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set_current_source_symtab_and_line (&sal);
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/*
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** If the focus was in the asm win, put it in the src
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** win if we don't have a split layout
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*/
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if (tui_win_with_focus () == TUI_DISASM_WIN &&
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tui_current_layout () != SRC_DISASSEM_COMMAND)
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tui_set_win_focus_to (TUI_SRC_WIN);
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}
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}
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return;
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}
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/* Function to ensure that the source and/or disassemly windows
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reflect the input address. */
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void
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tui_update_source_windows_with_addr (CORE_ADDR addr)
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{
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if (addr != 0)
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{
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struct symtab_and_line sal;
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struct tui_line_or_address l;
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switch (tui_current_layout ())
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{
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case DISASSEM_COMMAND:
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case DISASSEM_DATA_COMMAND:
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tui_show_disassem (addr);
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break;
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case SRC_DISASSEM_COMMAND:
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tui_show_disassem_and_update_source (addr);
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break;
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default:
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sal = find_pc_line (addr, 0);
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l.loa = LOA_LINE;
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l.u.line_no = sal.line;
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tui_show_symtab_source (sal.symtab, l, FALSE);
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break;
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}
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}
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else
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{
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int i;
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for (i = 0; i < (tui_source_windows ())->count; i++)
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{
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struct tui_win_info * win_info = (struct tui_win_info *) (tui_source_windows ())->list[i];
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tui_clear_source_content (win_info, EMPTY_SOURCE_PROMPT);
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tui_clear_exec_info_content (win_info);
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}
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}
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}
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/* Function to ensure that the source and/or disassemly windows
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reflect the input address. */
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void
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tui_update_source_windows_with_line (struct symtab *s, int line)
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{
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CORE_ADDR pc;
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struct tui_line_or_address l;
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switch (tui_current_layout ())
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{
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case DISASSEM_COMMAND:
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case DISASSEM_DATA_COMMAND:
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find_line_pc (s, line, &pc);
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tui_update_source_windows_with_addr (pc);
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break;
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default:
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l.loa = LOA_LINE;
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l.u.line_no = line;
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tui_show_symtab_source (s, l, FALSE);
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if (tui_current_layout () == SRC_DISASSEM_COMMAND)
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{
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find_line_pc (s, line, &pc);
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tui_show_disassem (pc);
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}
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break;
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}
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return;
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}
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void
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tui_clear_source_content (struct tui_win_info * win_info, int display_prompt)
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{
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if (win_info != NULL)
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{
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int i;
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win_info->generic.content_in_use = FALSE;
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tui_erase_source_content (win_info, display_prompt);
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for (i = 0; i < win_info->generic.content_size; i++)
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{
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struct tui_win_element * element =
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(struct tui_win_element *) win_info->generic.content[i];
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element->which_element.source.has_break = FALSE;
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element->which_element.source.is_exec_point = FALSE;
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}
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}
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}
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void
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tui_erase_source_content (struct tui_win_info * win_info, int display_prompt)
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{
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int x_pos;
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int half_width = (win_info->generic.width - 2) / 2;
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if (win_info->generic.handle != (WINDOW *) NULL)
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{
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werase (win_info->generic.handle);
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tui_check_and_display_highlight_if_needed (win_info);
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if (display_prompt == EMPTY_SOURCE_PROMPT)
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{
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char *no_src_str;
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if (win_info->generic.type == SRC_WIN)
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no_src_str = NO_SRC_STRING;
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else
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no_src_str = NO_DISASSEM_STRING;
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if (strlen (no_src_str) >= half_width)
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x_pos = 1;
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else
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x_pos = half_width - strlen (no_src_str);
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mvwaddstr (win_info->generic.handle,
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(win_info->generic.height / 2),
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x_pos,
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no_src_str);
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/* elz: added this function call to set the real contents of
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the window to what is on the screen, so that later calls
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to refresh, do display
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the correct stuff, and not the old image */
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tui_set_source_content_nil (win_info, no_src_str);
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}
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tui_refresh_win (&win_info->generic);
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}
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}
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/* Redraw the complete line of a source or disassembly window. */
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static void
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tui_show_source_line (struct tui_win_info * win_info, int lineno)
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{
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struct tui_win_element * line;
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int x, y;
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line = (struct tui_win_element *) win_info->generic.content[lineno - 1];
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if (line->which_element.source.is_exec_point)
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wattron (win_info->generic.handle, A_STANDOUT);
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mvwaddstr (win_info->generic.handle, lineno, 1,
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line->which_element.source.line);
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if (line->which_element.source.is_exec_point)
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wattroff (win_info->generic.handle, A_STANDOUT);
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/* Clear to end of line but stop before the border. */
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getyx (win_info->generic.handle, y, x);
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while (x + 1 < win_info->generic.width)
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{
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waddch (win_info->generic.handle, ' ');
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getyx (win_info->generic.handle, y, x);
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}
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}
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void
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tui_show_source_content (struct tui_win_info * win_info)
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{
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if (win_info->generic.content_size > 0)
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{
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int lineno;
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for (lineno = 1; lineno <= win_info->generic.content_size; lineno++)
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tui_show_source_line (win_info, lineno);
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}
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else
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tui_erase_source_content (win_info, TRUE);
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tui_check_and_display_highlight_if_needed (win_info);
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tui_refresh_win (&win_info->generic);
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win_info->generic.content_in_use = TRUE;
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}
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/* Scroll the source forward or backward horizontally. */
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void
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tui_horizontal_source_scroll (struct tui_win_info * win_info,
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enum tui_scroll_direction direction,
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int num_to_scroll)
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{
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if (win_info->generic.content != NULL)
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{
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int offset;
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struct symtab *s;
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struct symtab_and_line cursal = get_current_source_symtab_and_line ();
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if (cursal.symtab == (struct symtab *) NULL)
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s = find_pc_symtab (get_frame_pc (deprecated_selected_frame));
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else
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s = cursal.symtab;
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if (direction == LEFT_SCROLL)
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offset = win_info->detail.source_info.horizontal_offset + num_to_scroll;
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else
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{
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if ((offset =
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win_info->detail.source_info.horizontal_offset - num_to_scroll) < 0)
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offset = 0;
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}
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win_info->detail.source_info.horizontal_offset = offset;
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tui_update_source_window_as_is (win_info, s,
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((struct tui_win_element *)
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win_info->generic.content[0])->which_element.source.line_or_addr,
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FALSE);
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}
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return;
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}
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/* Set or clear the has_break flag in the line whose line is line_no. */
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void
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tui_set_is_exec_point_at (struct tui_line_or_address l, struct tui_win_info * win_info)
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{
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int changed = 0;
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int i;
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tui_win_content content = (tui_win_content) win_info->generic.content;
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i = 0;
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while (i < win_info->generic.content_size)
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{
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int new_state;
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struct tui_line_or_address content_loa =
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content[i]->which_element.source.line_or_addr;
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gdb_assert (l.loa == LOA_ADDRESS || l.loa == LOA_LINE);
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gdb_assert (content_loa.loa == LOA_LINE
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|| content_loa.loa == LOA_ADDRESS);
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if (content_loa.loa == l.loa
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&& ((l.loa == LOA_LINE && content_loa.u.line_no == l.u.line_no)
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|| (content_loa.u.addr == l.u.addr)))
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new_state = TRUE;
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else
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new_state = FALSE;
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if (new_state != content[i]->which_element.source.is_exec_point)
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{
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changed++;
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content[i]->which_element.source.is_exec_point = new_state;
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tui_show_source_line (win_info, i + 1);
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}
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i++;
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}
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if (changed)
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tui_refresh_win (&win_info->generic);
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}
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/* Update the execution windows to show the active breakpoints.
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This is called whenever a breakpoint is inserted, removed or
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has its state changed. */
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void
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tui_update_all_breakpoint_info (void)
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{
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struct tui_list *list = tui_source_windows ();
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int i;
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for (i = 0; i < list->count; i++)
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{
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struct tui_win_info * win = (struct tui_win_info *) list->list[i];
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if (tui_update_breakpoint_info (win, FALSE))
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{
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tui_update_exec_info (win);
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}
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}
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}
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/* Scan the source window and the breakpoints to update the
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has_break information for each line.
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Returns 1 if something changed and the execution window
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must be refreshed. */
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int
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tui_update_breakpoint_info (struct tui_win_info * win, int current_only)
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{
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int i;
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int need_refresh = 0;
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struct tui_source_info * src = &win->detail.source_info;
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for (i = 0; i < win->generic.content_size; i++)
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{
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struct breakpoint *bp;
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extern struct breakpoint *breakpoint_chain;
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int mode;
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struct tui_source_element* line;
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line = &((struct tui_win_element *) win->generic.content[i])->which_element.source;
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if (current_only && !line->is_exec_point)
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continue;
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/* Scan each breakpoint to see if the current line has something to
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do with it. Identify enable/disabled breakpoints as well as
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those that we already hit. */
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mode = 0;
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for (bp = breakpoint_chain;
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bp != (struct breakpoint *) NULL;
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bp = bp->next)
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{
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gdb_assert (line->line_or_addr.loa == LOA_LINE
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|| line->line_or_addr.loa == LOA_ADDRESS);
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if ((win == TUI_SRC_WIN
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&& bp->source_file
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&& (strcmp (src->filename, bp->source_file) == 0)
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&& line->line_or_addr.loa == LOA_LINE
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&& bp->line_number == line->line_or_addr.u.line_no)
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|| (win == TUI_DISASM_WIN
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&& line->line_or_addr.loa == LOA_ADDRESS
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&& bp->loc->address == line->line_or_addr.u.addr))
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{
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if (bp->enable_state == bp_disabled)
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mode |= TUI_BP_DISABLED;
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else
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mode |= TUI_BP_ENABLED;
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if (bp->hit_count)
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mode |= TUI_BP_HIT;
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if (bp->cond)
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mode |= TUI_BP_CONDITIONAL;
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if (bp->type == bp_hardware_breakpoint)
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mode |= TUI_BP_HARDWARE;
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}
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}
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if (line->has_break != mode)
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{
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line->has_break = mode;
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need_refresh = 1;
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}
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}
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return need_refresh;
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}
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/* Function to initialize the content of the execution info window,
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based upon the input window which is either the source or
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disassembly window. */
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enum tui_status
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tui_set_exec_info_content (struct tui_win_info * win_info)
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{
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enum tui_status ret = TUI_SUCCESS;
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if (win_info->detail.source_info.execution_info != (struct tui_gen_win_info *) NULL)
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{
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struct tui_gen_win_info * exec_info_ptr = win_info->detail.source_info.execution_info;
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if (exec_info_ptr->content == NULL)
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exec_info_ptr->content =
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(void **) tui_alloc_content (win_info->generic.height,
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exec_info_ptr->type);
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if (exec_info_ptr->content != NULL)
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{
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int i;
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tui_update_breakpoint_info (win_info, 1);
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for (i = 0; i < win_info->generic.content_size; i++)
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{
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struct tui_win_element * element;
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struct tui_win_element * src_element;
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int mode;
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element = (struct tui_win_element *) exec_info_ptr->content[i];
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src_element = (struct tui_win_element *) win_info->generic.content[i];
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memset(element->which_element.simple_string, ' ',
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sizeof(element->which_element.simple_string));
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element->which_element.simple_string[TUI_EXECINFO_SIZE - 1] = 0;
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/* Now update the exec info content based upon the state
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of each line as indicated by the source content. */
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mode = src_element->which_element.source.has_break;
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if (mode & TUI_BP_HIT)
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element->which_element.simple_string[TUI_BP_HIT_POS] =
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(mode & TUI_BP_HARDWARE) ? 'H' : 'B';
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else if (mode & (TUI_BP_ENABLED | TUI_BP_DISABLED))
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element->which_element.simple_string[TUI_BP_HIT_POS] =
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(mode & TUI_BP_HARDWARE) ? 'h' : 'b';
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if (mode & TUI_BP_ENABLED)
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element->which_element.simple_string[TUI_BP_BREAK_POS] = '+';
|
|
else if (mode & TUI_BP_DISABLED)
|
|
element->which_element.simple_string[TUI_BP_BREAK_POS] = '-';
|
|
|
|
if (src_element->which_element.source.is_exec_point)
|
|
element->which_element.simple_string[TUI_EXEC_POS] = '>';
|
|
}
|
|
exec_info_ptr->content_size = win_info->generic.content_size;
|
|
}
|
|
else
|
|
ret = TUI_FAILURE;
|
|
}
|
|
|
|
return ret;
|
|
}
|
|
|
|
|
|
void
|
|
tui_show_exec_info_content (struct tui_win_info * win_info)
|
|
{
|
|
struct tui_gen_win_info * exec_info = win_info->detail.source_info.execution_info;
|
|
int cur_line;
|
|
|
|
werase (exec_info->handle);
|
|
tui_refresh_win (exec_info);
|
|
for (cur_line = 1; (cur_line <= exec_info->content_size); cur_line++)
|
|
mvwaddstr (exec_info->handle,
|
|
cur_line,
|
|
0,
|
|
((struct tui_win_element *)
|
|
exec_info->content[cur_line - 1])->which_element.simple_string);
|
|
tui_refresh_win (exec_info);
|
|
exec_info->content_in_use = TRUE;
|
|
}
|
|
|
|
|
|
void
|
|
tui_erase_exec_info_content (struct tui_win_info * win_info)
|
|
{
|
|
struct tui_gen_win_info * exec_info = win_info->detail.source_info.execution_info;
|
|
|
|
werase (exec_info->handle);
|
|
tui_refresh_win (exec_info);
|
|
}
|
|
|
|
void
|
|
tui_clear_exec_info_content (struct tui_win_info * win_info)
|
|
{
|
|
win_info->detail.source_info.execution_info->content_in_use = FALSE;
|
|
tui_erase_exec_info_content (win_info);
|
|
|
|
return;
|
|
}
|
|
|
|
/* Function to update the execution info window. */
|
|
void
|
|
tui_update_exec_info (struct tui_win_info * win_info)
|
|
{
|
|
tui_set_exec_info_content (win_info);
|
|
tui_show_exec_info_content (win_info);
|
|
}
|
|
|
|
enum tui_status
|
|
tui_alloc_source_buffer (struct tui_win_info *win_info)
|
|
{
|
|
char *src_line_buf;
|
|
int i, line_width, max_lines;
|
|
enum tui_status ret = TUI_FAILURE;
|
|
|
|
max_lines = win_info->generic.height; /* less the highlight box */
|
|
line_width = win_info->generic.width - 1;
|
|
/*
|
|
** Allocate the buffer for the source lines. Do this only once since they
|
|
** will be re-used for all source displays. The only other time this will
|
|
** be done is when a window's size changes.
|
|
*/
|
|
if (win_info->generic.content == NULL)
|
|
{
|
|
src_line_buf = (char *) xmalloc ((max_lines * line_width) * sizeof (char));
|
|
if (src_line_buf == (char *) NULL)
|
|
fputs_unfiltered (
|
|
"Unable to Allocate Memory for Source or Disassembly Display.\n",
|
|
gdb_stderr);
|
|
else
|
|
{
|
|
/* allocate the content list */
|
|
if ((win_info->generic.content =
|
|
(void **) tui_alloc_content (max_lines, SRC_WIN)) == NULL)
|
|
{
|
|
xfree (src_line_buf);
|
|
src_line_buf = (char *) NULL;
|
|
fputs_unfiltered (
|
|
"Unable to Allocate Memory for Source or Disassembly Display.\n",
|
|
gdb_stderr);
|
|
}
|
|
}
|
|
for (i = 0; i < max_lines; i++)
|
|
((struct tui_win_element *)
|
|
win_info->generic.content[i])->which_element.source.line =
|
|
src_line_buf + (line_width * i);
|
|
ret = TUI_SUCCESS;
|
|
}
|
|
else
|
|
ret = TUI_SUCCESS;
|
|
|
|
return ret;
|
|
}
|
|
|
|
|
|
/* Answer whether the a particular line number or address is displayed
|
|
in the current source window. */
|
|
int
|
|
tui_line_is_displayed (int line, struct tui_win_info * win_info,
|
|
int check_threshold)
|
|
{
|
|
int is_displayed = FALSE;
|
|
int i, threshold;
|
|
|
|
if (check_threshold)
|
|
threshold = SCROLL_THRESHOLD;
|
|
else
|
|
threshold = 0;
|
|
i = 0;
|
|
while (i < win_info->generic.content_size - threshold && !is_displayed)
|
|
{
|
|
is_displayed = (((struct tui_win_element *)
|
|
win_info->generic.content[i])->which_element.source.line_or_addr.loa
|
|
== LOA_LINE)
|
|
&& (((struct tui_win_element *)
|
|
win_info->generic.content[i])->which_element.source.line_or_addr.u.line_no
|
|
== (int) line);
|
|
i++;
|
|
}
|
|
|
|
return is_displayed;
|
|
}
|
|
|
|
|
|
/* Answer whether the a particular line number or address is displayed
|
|
in the current source window. */
|
|
int
|
|
tui_addr_is_displayed (CORE_ADDR addr, struct tui_win_info * win_info,
|
|
int check_threshold)
|
|
{
|
|
int is_displayed = FALSE;
|
|
int i, threshold;
|
|
|
|
if (check_threshold)
|
|
threshold = SCROLL_THRESHOLD;
|
|
else
|
|
threshold = 0;
|
|
i = 0;
|
|
while (i < win_info->generic.content_size - threshold && !is_displayed)
|
|
{
|
|
is_displayed = (((struct tui_win_element *)
|
|
win_info->generic.content[i])->which_element.source.line_or_addr.loa
|
|
== LOA_ADDRESS)
|
|
&& (((struct tui_win_element *)
|
|
win_info->generic.content[i])->which_element.source.line_or_addr.u.addr
|
|
== addr);
|
|
i++;
|
|
}
|
|
|
|
return is_displayed;
|
|
}
|
|
|
|
|
|
/*****************************************
|
|
** STATIC LOCAL FUNCTIONS **
|
|
******************************************/
|