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binutils-gdb/gdb/tui/tui-data.c

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/* TUI data manipulation routines.
Copyright (C) 1998-2017 Free Software Foundation, Inc.
Contributed by Hewlett-Packard Company.
This file is part of GDB.
This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 3 of the License, or
(at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program. If not, see <http://www.gnu.org/licenses/>. */
#include "defs.h"
#include "symtab.h"
#include "tui/tui.h"
#include "tui/tui-data.h"
#include "tui/tui-wingeneral.h"
#include "gdb_curses.h"
/****************************
** GLOBAL DECLARATIONS
****************************/
struct tui_win_info *(tui_win_list[MAX_MAJOR_WINDOWS]);
/***************************
** Private data
****************************/
static enum tui_layout_type current_layout = UNDEFINED_LAYOUT;
static int term_height, term_width;
static struct tui_gen_win_info _locator;
static struct tui_gen_win_info exec_info[2];
static struct tui_win_info *src_win_list[2];
static struct tui_list source_windows = {src_win_list, 0};
static int default_tab_len = DEFAULT_TAB_LEN;
static struct tui_win_info *win_with_focus = NULL;
static struct tui_layout_def layout_def = {
SRC_WIN, /* DISPLAY_MODE */
FALSE}; /* SPLIT */
static int win_resized = FALSE;
/*********************************
** Static function forward decls
**********************************/
static void free_content (tui_win_content,
int,
enum tui_win_type);
static void free_content_elements (tui_win_content,
int,
enum tui_win_type);
/*********************************
** PUBLIC FUNCTIONS
**********************************/
int
tui_win_is_source_type (enum tui_win_type win_type)
{
return (win_type == SRC_WIN || win_type == DISASSEM_WIN);
}
int
tui_win_is_auxillary (enum tui_win_type win_type)
{
return (win_type > MAX_MAJOR_WINDOWS);
}
int
tui_win_has_locator (struct tui_win_info *win_info)
{
return (win_info != NULL
&& win_info->detail.source_info.has_locator);
}
void
tui_set_win_highlight (struct tui_win_info *win_info,
int highlight)
{
if (win_info != NULL)
win_info->is_highlighted = highlight;
}
/******************************************
** ACCESSORS & MUTATORS FOR PRIVATE DATA
******************************************/
/* Answer a whether the terminal window has been resized or not. */
int
tui_win_resized (void)
{
return win_resized;
}
/* Set a whether the terminal window has been resized or not. */
void
tui_set_win_resized_to (int resized)
{
win_resized = resized;
}
/* Answer a pointer to the current layout definition. */
struct tui_layout_def *
tui_layout_def (void)
{
return &layout_def;
}
/* Answer the window with the logical focus. */
struct tui_win_info *
tui_win_with_focus (void)
{
return win_with_focus;
}
/* Set the window that has the logical focus. */
void
tui_set_win_with_focus (struct tui_win_info *win_info)
{
win_with_focus = win_info;
}
/* Answer the length in chars, of tabs. */
int
tui_default_tab_len (void)
{
return default_tab_len;
}
/* Set the length in chars, of tabs. */
void
tui_set_default_tab_len (int len)
{
default_tab_len = len;
}
/* Accessor for the current source window. Usually there is only one
source window (either source or disassembly), but both can be
displayed at the same time. */
struct tui_list *
tui_source_windows (void)
{
return &source_windows;
}
/* Clear the list of source windows. Usually there is only one source
window (either source or disassembly), but both can be displayed at
the same time. */
void
tui_clear_source_windows (void)
{
source_windows.list[0] = NULL;
source_windows.list[1] = NULL;
source_windows.count = 0;
}
/* Clear the pertinant detail in the source windows. */
void
tui_clear_source_windows_detail (void)
{
int i;
for (i = 0; i < (tui_source_windows ())->count; i++)
tui_clear_win_detail ((tui_source_windows ())->list[i]);
}
/* Add a window to the list of source windows. Usually there is only
one source window (either source or disassembly), but both can be
displayed at the same time. */
void
tui_add_to_source_windows (struct tui_win_info *win_info)
{
if (source_windows.count < 2)
source_windows.list[source_windows.count++] = win_info;
}
/* Clear the pertinant detail in the windows. */
void
tui_clear_win_detail (struct tui_win_info *win_info)
{
if (win_info != NULL)
{
switch (win_info->generic.type)
{
case SRC_WIN:
case DISASSEM_WIN:
win_info->detail.source_info.gdbarch = NULL;
win_info->detail.source_info.start_line_or_addr.loa = LOA_ADDRESS;
win_info->detail.source_info.start_line_or_addr.u.addr = 0;
win_info->detail.source_info.horizontal_offset = 0;
break;
case CMD_WIN:
wmove (win_info->generic.handle, 0, 0);
break;
case DATA_WIN:
win_info->detail.data_display_info.data_content =
(tui_win_content) NULL;
win_info->detail.data_display_info.data_content_count = 0;
win_info->detail.data_display_info.regs_content =
(tui_win_content) NULL;
win_info->detail.data_display_info.regs_content_count = 0;
win_info->detail.data_display_info.regs_column_count = 1;
win_info->detail.data_display_info.display_regs = FALSE;
break;
default:
break;
}
}
}
/* Accessor for the source execution info ptr. */
struct tui_gen_win_info *
tui_source_exec_info_win_ptr (void)
{
return &exec_info[0];
}
/* Accessor for the disassem execution info ptr. */
struct tui_gen_win_info *
tui_disassem_exec_info_win_ptr (void)
{
return &exec_info[1];
}
/* Accessor for the locator win info. Answers a pointer to the static
locator win info struct. */
struct tui_gen_win_info *
tui_locator_win_info_ptr (void)
{
return &_locator;
}
/* Accessor for the term_height. */
int
tui_term_height (void)
{
return term_height;
}
/* Mutator for the term height. */
void
tui_set_term_height_to (int h)
{
term_height = h;
}
/* Accessor for the term_width. */
int
tui_term_width (void)
{
return term_width;
}
/* Mutator for the term_width. */
void
tui_set_term_width_to (int w)
{
term_width = w;
}
/* Accessor for the current layout. */
enum tui_layout_type
tui_current_layout (void)
{
return current_layout;
}
/* Mutator for the current layout. */
void
tui_set_current_layout_to (enum tui_layout_type new_layout)
{
current_layout = new_layout;
}
/*****************************
** OTHER PUBLIC FUNCTIONS
*****************************/
/* Answer the next window in the list, cycling back to the top if
necessary. */
struct tui_win_info *
tui_next_win (struct tui_win_info *cur_win)
{
int type = cur_win->generic.type;
struct tui_win_info *next_win = NULL;
if (cur_win->generic.type == CMD_WIN)
type = SRC_WIN;
else
type = cur_win->generic.type + 1;
while (type != cur_win->generic.type && (next_win == NULL))
{
if (tui_win_list[type]
&& tui_win_list[type]->generic.is_visible)
next_win = tui_win_list[type];
else
{
if (type == CMD_WIN)
type = SRC_WIN;
else
type++;
}
}
return next_win;
}
/* Answer the prev window in the list, cycling back to the bottom if
necessary. */
struct tui_win_info *
tui_prev_win (struct tui_win_info *cur_win)
{
int type = cur_win->generic.type;
struct tui_win_info *prev = NULL;
if (cur_win->generic.type == SRC_WIN)
type = CMD_WIN;
else
type = cur_win->generic.type - 1;
while (type != cur_win->generic.type && (prev == NULL))
{
if (tui_win_list[type]
&& tui_win_list[type]->generic.is_visible)
prev = tui_win_list[type];
else
{
if (type == SRC_WIN)
type = CMD_WIN;
else
type--;
}
}
return prev;
}
/* Answer the window represented by name. */
struct tui_win_info *
tui_partial_win_by_name (char *name)
{
struct tui_win_info *win_info = NULL;
if (name != (char *) NULL)
{
int i = 0;
while (i < MAX_MAJOR_WINDOWS && win_info == NULL)
{
if (tui_win_list[i] != 0)
{
const char *cur_name =
tui_win_name (&tui_win_list[i]->generic);
if (strlen (name) <= strlen (cur_name)
&& startswith (cur_name, name))
win_info = tui_win_list[i];
}
i++;
}
}
return win_info;
}
/* Answer the name of the window. */
const char *
tui_win_name (const struct tui_gen_win_info *win_info)
{
const char *name = NULL;
switch (win_info->type)
{
case SRC_WIN:
name = SRC_NAME;
break;
case CMD_WIN:
name = CMD_NAME;
break;
case DISASSEM_WIN:
name = DISASSEM_NAME;
break;
case DATA_WIN:
name = DATA_NAME;
break;
default:
name = "";
break;
}
return name;
}
void
tui_initialize_static_data (void)
{
tui_init_generic_part (tui_source_exec_info_win_ptr ());
tui_init_generic_part (tui_disassem_exec_info_win_ptr ());
tui_init_generic_part (tui_locator_win_info_ptr ());
}
struct tui_gen_win_info *
tui_alloc_generic_win_info (void)
{
struct tui_gen_win_info *win = XNEW (struct tui_gen_win_info);
if (win != NULL)
tui_init_generic_part (win);
return win;
}
void
tui_init_generic_part (struct tui_gen_win_info *win)
{
win->width =
win->height =
win->origin.x =
win->origin.y =
win->viewport_height =
win->content_size =
win->last_visible_line = 0;
win->handle = NULL;
win->content = NULL;
win->content_in_use =
win->is_visible = FALSE;
win->title = 0;
}
/* init_content_element().
*/
static void
init_content_element (struct tui_win_element *element,
enum tui_win_type type)
{
element->highlight = FALSE;
switch (type)
{
case SRC_WIN:
case DISASSEM_WIN:
element->which_element.source.line = NULL;
element->which_element.source.line_or_addr.loa = LOA_LINE;
element->which_element.source.line_or_addr.u.line_no = 0;
element->which_element.source.is_exec_point = FALSE;
element->which_element.source.has_break = FALSE;
break;
case DATA_WIN:
tui_init_generic_part (&element->which_element.data_window);
element->which_element.data_window.type = DATA_ITEM_WIN;
element->which_element.data_window.content =
tui_alloc_content (1, DATA_ITEM_WIN);
element->which_element.data_window.content_size = 1;
break;
case CMD_WIN:
element->which_element.command.line = NULL;
break;
case DATA_ITEM_WIN:
element->which_element.data.name = NULL;
element->which_element.data.type = TUI_REGISTER;
element->which_element.data.item_no = UNDEFINED_ITEM;
element->which_element.data.value = NULL;
element->which_element.data.highlight = FALSE;
element->which_element.data.content = NULL;
break;
case LOCATOR_WIN:
element->which_element.locator.full_name[0] =
element->which_element.locator.proc_name[0] = (char) 0;
element->which_element.locator.line_no = 0;
element->which_element.locator.addr = 0;
break;
case EXEC_INFO_WIN:
memset(element->which_element.simple_string, ' ',
sizeof(element->which_element.simple_string));
break;
default:
break;
}
}
static void
init_win_info (struct tui_win_info *win_info)
{
tui_init_generic_part (&win_info->generic);
win_info->can_highlight =
win_info->is_highlighted = FALSE;
switch (win_info->generic.type)
{
case SRC_WIN:
case DISASSEM_WIN:
win_info->detail.source_info.execution_info
= (struct tui_gen_win_info *) NULL;
win_info->detail.source_info.has_locator = FALSE;
win_info->detail.source_info.horizontal_offset = 0;
win_info->detail.source_info.gdbarch = NULL;
win_info->detail.source_info.start_line_or_addr.loa = LOA_ADDRESS;
win_info->detail.source_info.start_line_or_addr.u.addr = 0;
win_info->detail.source_info.fullname = NULL;
break;
case DATA_WIN:
win_info->detail.data_display_info.data_content = (tui_win_content) NULL;
win_info->detail.data_display_info.data_content_count = 0;
win_info->detail.data_display_info.regs_content = (tui_win_content) NULL;
win_info->detail.data_display_info.regs_content_count = 0;
win_info->detail.data_display_info.regs_column_count = 1;
win_info->detail.data_display_info.display_regs = FALSE;
win_info->detail.data_display_info.current_group = 0;
break;
case CMD_WIN:
break;
default:
win_info->detail.opaque = NULL;
break;
}
}
struct tui_win_info *
tui_alloc_win_info (enum tui_win_type type)
{
struct tui_win_info *win_info = XNEW (struct tui_win_info);
if (win_info != NULL)
{
win_info->generic.type = type;
init_win_info (win_info);
}
return win_info;
}
/* Allocates the content and elements in a block. */
tui_win_content
tui_alloc_content (int num_elements, enum tui_win_type type)
{
tui_win_content content;
struct tui_win_element *element_block_ptr;
int i;
content = XNEWVEC (struct tui_win_element *, num_elements);
/*
* All windows, except the data window, can allocate the
* elements in a chunk. The data window cannot because items
* can be added/removed from the data display by the user at any
* time.
*/
if (type != DATA_WIN)
{
element_block_ptr = XNEWVEC (struct tui_win_element, num_elements);
for (i = 0; i < num_elements; i++)
{
content[i] = element_block_ptr;
init_content_element (content[i], type);
element_block_ptr++;
}
}
return content;
}
/* Adds the input number of elements to the windows's content. If no
content has been allocated yet, alloc_content() is called to do
this. The index of the first element added is returned, unless
there is a memory allocation error, in which case, (-1) is
returned. */
int
tui_add_content_elements (struct tui_gen_win_info *win_info,
int num_elements)
{
struct tui_win_element *element_ptr;
int i, index_start;
if (win_info->content == NULL)
{
win_info->content = tui_alloc_content (num_elements, win_info->type);
index_start = 0;
}
else
index_start = win_info->content_size;
if (win_info->content != NULL)
{
for (i = index_start; (i < num_elements + index_start); i++)
{
element_ptr = XNEW (struct tui_win_element);
if (element_ptr != NULL)
{
win_info->content[i] = element_ptr;
init_content_element (element_ptr, win_info->type);
win_info->content_size++;
}
else /* Things must be really hosed now! We ran out of
memory!? */
return (-1);
}
}
return index_start;
}
/* Delete all curses windows associated with win_info, leaving
everything else intact. */
void
tui_del_window (struct tui_win_info *win_info)
{
struct tui_gen_win_info *generic_win;
switch (win_info->generic.type)
{
case SRC_WIN:
case DISASSEM_WIN:
generic_win = tui_locator_win_info_ptr ();
if (generic_win != (struct tui_gen_win_info *) NULL)
{
tui_delete_win (generic_win->handle);
generic_win->handle = NULL;
generic_win->is_visible = FALSE;
}
if (win_info->detail.source_info.fullname)
{
xfree (win_info->detail.source_info.fullname);
win_info->detail.source_info.fullname = NULL;
}
generic_win = win_info->detail.source_info.execution_info;
if (generic_win != (struct tui_gen_win_info *) NULL)
{
tui_delete_win (generic_win->handle);
generic_win->handle = NULL;
generic_win->is_visible = FALSE;
}
break;
case DATA_WIN:
if (win_info->generic.content != NULL)
{
tui_del_data_windows (win_info->detail.data_display_info.regs_content,
win_info->detail.data_display_info.regs_content_count);
tui_del_data_windows (win_info->detail.data_display_info.data_content,
win_info->detail.data_display_info.data_content_count);
}
break;
default:
break;
}
if (win_info->generic.handle != (WINDOW *) NULL)
{
tui_delete_win (win_info->generic.handle);
win_info->generic.handle = NULL;
win_info->generic.is_visible = FALSE;
}
}
void
tui_free_window (struct tui_win_info *win_info)
{
struct tui_gen_win_info *generic_win;
switch (win_info->generic.type)
{
case SRC_WIN:
case DISASSEM_WIN:
if (win_info->detail.source_info.fullname)
{
xfree (win_info->detail.source_info.fullname);
win_info->detail.source_info.fullname = NULL;
}
generic_win = win_info->detail.source_info.execution_info;
if (generic_win != (struct tui_gen_win_info *) NULL)
{
tui_delete_win (generic_win->handle);
generic_win->handle = NULL;
tui_free_win_content (generic_win);
}
break;
case DATA_WIN:
if (win_info->generic.content != NULL)
{
tui_free_data_content (win_info->detail.data_display_info.regs_content,
win_info->detail.data_display_info.regs_content_count);
win_info->detail.data_display_info.regs_content =
(tui_win_content) NULL;
win_info->detail.data_display_info.regs_content_count = 0;
tui_free_data_content (win_info->detail.data_display_info.data_content,
win_info->detail.data_display_info.data_content_count);
win_info->detail.data_display_info.data_content =
(tui_win_content) NULL;
win_info->detail.data_display_info.data_content_count = 0;
win_info->detail.data_display_info.regs_column_count = 1;
win_info->detail.data_display_info.display_regs = FALSE;
win_info->generic.content = NULL;
win_info->generic.content_size = 0;
}
break;
default:
break;
}
if (win_info->generic.handle != (WINDOW *) NULL)
{
tui_delete_win (win_info->generic.handle);
win_info->generic.handle = NULL;
tui_free_win_content (&win_info->generic);
}
if (win_info->generic.title)
xfree (win_info->generic.title);
xfree (win_info);
}
void
tui_free_all_source_wins_content (void)
{
int i;
for (i = 0; i < (tui_source_windows ())->count; i++)
{
struct tui_win_info *win_info = (tui_source_windows ())->list[i];
if (win_info != NULL)
{
tui_free_win_content (&(win_info->generic));
tui_free_win_content (win_info->detail.source_info.execution_info);
}
}
}
void
tui_free_win_content (struct tui_gen_win_info *win_info)
{
if (win_info->content != NULL)
{
free_content ((tui_win_content) win_info->content,
win_info->content_size,
win_info->type);
win_info->content = NULL;
}
win_info->content_size = 0;
}
void
tui_del_data_windows (tui_win_content content,
int content_size)
{
int i;
/* Remember that data window content elements are of type struct
tui_gen_win_info *, each of which whose single element is a data
element. */
for (i = 0; i < content_size; i++)
{
struct tui_gen_win_info *generic_win
= &content[i]->which_element.data_window;
if (generic_win != (struct tui_gen_win_info *) NULL)
{
tui_delete_win (generic_win->handle);
generic_win->handle = NULL;
generic_win->is_visible = FALSE;
}
}
}
void
tui_free_data_content (tui_win_content content,
int content_size)
{
int i;
/* Remember that data window content elements are of type struct
tui_gen_win_info *, each of which whose single element is a data
element. */
for (i = 0; i < content_size; i++)
{
struct tui_gen_win_info *generic_win
= &content[i]->which_element.data_window;
if (generic_win != (struct tui_gen_win_info *) NULL)
{
tui_delete_win (generic_win->handle);
generic_win->handle = NULL;
tui_free_win_content (generic_win);
}
}
free_content (content,
content_size,
DATA_WIN);
}
/**********************************
** LOCAL STATIC FUNCTIONS **
**********************************/
static void
free_content (tui_win_content content,
int content_size,
enum tui_win_type win_type)
{
if (content != (tui_win_content) NULL)
{
free_content_elements (content, content_size, win_type);
xfree (content);
}
}
/* free_content_elements().
*/
static void
free_content_elements (tui_win_content content,
int content_size,
enum tui_win_type type)
{
if (content != (tui_win_content) NULL)
{
int i;
if (type == SRC_WIN || type == DISASSEM_WIN)
{
/* Free whole source block. */
xfree (content[0]->which_element.source.line);
}
else
{
for (i = 0; i < content_size; i++)
{
struct tui_win_element *element;
element = content[i];
if (element != (struct tui_win_element *) NULL)
{
switch (type)
{
case DATA_WIN:
xfree (element);
break;
case DATA_ITEM_WIN:
/* Note that data elements are not allocated in
a single block, but individually, as
needed. */
if (element->which_element.data.type != TUI_REGISTER)
xfree ((void *)element->which_element.data.name);
xfree (element->which_element.data.value);
xfree (element->which_element.data.content);
xfree (element);
break;
case CMD_WIN:
xfree (element->which_element.command.line);
break;
default:
break;
}
}
}
}
if (type != DATA_WIN && type != DATA_ITEM_WIN)
xfree (content[0]); /* Free the element block. */
}
}
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