325 lines
9 KiB
C
325 lines
9 KiB
C
/* Disassembly display.
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Copyright 1998, 1999, 2000, 2001, 2002 Free Software Foundation,
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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., 59 Temple Place - Suite 330,
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Boston, MA 02111-1307, USA. */
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/* FIXME: cagney/2002-02-28: The GDB coding standard indicates that
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"defs.h" should be included first. Unfortunatly some systems
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(currently Debian GNU/Linux) include the <stdbool.h> via <curses.h>
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and they clash with "bfd.h"'s definiton of true/false. The correct
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fix is to remove true/false from "bfd.h", however, until that
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happens, hack around it by including "config.h" and <curses.h>
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first. */
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#include "config.h"
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#ifdef HAVE_NCURSES_H
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#include <ncurses.h>
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#else
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#ifdef HAVE_CURSES_H
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#include <curses.h>
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#endif
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#endif
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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 "value.h"
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#include "tui.h"
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#include "tuiData.h"
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#include "tuiWin.h"
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#include "tuiLayout.h"
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#include "tuiSourceWin.h"
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#include "tuiStack.h"
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#include "tui-file.h"
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/*****************************************
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** STATIC LOCAL FUNCTIONS FORWARD DECLS **
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******************************************/
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static struct breakpoint *_hasBreak (CORE_ADDR);
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/*****************************************
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** PUBLIC FUNCTIONS **
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******************************************/
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/*
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** tuiSetDisassemContent().
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** Function to set the disassembly window's content.
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*/
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TuiStatus
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tuiSetDisassemContent (struct symtab *s, CORE_ADDR startAddr)
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{
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TuiStatus ret = TUI_FAILURE;
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struct ui_file *gdb_dis_out;
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if (startAddr != 0)
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{
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register int i, desc;
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if ((ret = tuiAllocSourceBuffer (disassemWin)) == TUI_SUCCESS)
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{
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register int offset = disassemWin->detail.sourceInfo.horizontalOffset;
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register int threshold, curLine = 0, lineWidth, maxLines;
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CORE_ADDR newpc, pc;
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disassemble_info asmInfo;
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TuiGenWinInfoPtr locator = locatorWinInfoPtr ();
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extern void strcat_address (CORE_ADDR, char *, int);
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extern void strcat_address_numeric (CORE_ADDR, int, char *, int);
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int curLen = 0;
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int tab_len = tuiDefaultTabLen ();
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maxLines = disassemWin->generic.height - 2; /* account for hilite */
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lineWidth = disassemWin->generic.width - 1;
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threshold = (lineWidth - 1) + offset;
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/* now init the ui_file structure */
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gdb_dis_out = tui_sfileopen (threshold);
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asmInfo = tm_print_insn_info;
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asmInfo.stream = gdb_dis_out;
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disassemWin->detail.sourceInfo.startLineOrAddr.addr = startAddr;
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/* Now construct each line */
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for (curLine = 0, pc = startAddr; (curLine < maxLines);)
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{
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TuiWinElementPtr element = (TuiWinElementPtr) disassemWin->generic.content[curLine];
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struct breakpoint *bp;
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print_address (pc, gdb_dis_out);
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curLen = strlen (tui_file_get_strbuf (gdb_dis_out));
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i = curLen - ((curLen / tab_len) * tab_len);
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/* adjust buffer length if necessary */
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tui_file_adjust_strbuf ((tab_len - i > 0) ? (tab_len - i) : 0, gdb_dis_out);
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/* Add spaces to make the instructions start onthe same column */
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while (i < tab_len)
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{
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tui_file_get_strbuf (gdb_dis_out)[curLen] = ' ';
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i++;
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curLen++;
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}
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tui_file_get_strbuf (gdb_dis_out)[curLen] = '\0';
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newpc = pc + ((*tm_print_insn) (pc, &asmInfo));
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/* Now copy the line taking the offset into account */
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if (strlen (tui_file_get_strbuf (gdb_dis_out)) > offset)
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strcpy (element->whichElement.source.line,
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&(tui_file_get_strbuf (gdb_dis_out)[offset]));
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else
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element->whichElement.source.line[0] = '\0';
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element->whichElement.source.lineOrAddr.addr = pc;
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element->whichElement.source.isExecPoint =
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(pc == (CORE_ADDR) ((TuiWinElementPtr) locator->content[0])->whichElement.locator.addr);
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bp = _hasBreak (pc);
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element->whichElement.source.hasBreak =
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(bp != (struct breakpoint *) NULL &&
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(!element->whichElement.source.isExecPoint ||
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(bp->disposition != disp_del || bp->hit_count <= 0)));
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curLine++;
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pc = newpc;
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/* reset the buffer to empty */
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tui_file_get_strbuf (gdb_dis_out)[0] = '\0';
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}
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ui_file_delete (gdb_dis_out);
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gdb_dis_out = NULL;
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disassemWin->generic.contentSize = curLine;
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ret = TUI_SUCCESS;
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}
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}
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return ret;
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} /* tuiSetDisassemContent */
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/*
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** tuiShowDisassem().
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** Function to display the disassembly window with disassembled code.
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*/
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void
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tuiShowDisassem (CORE_ADDR startAddr)
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{
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struct symtab *s = find_pc_symtab (startAddr);
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TuiWinInfoPtr winWithFocus = tuiWinWithFocus ();
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TuiLineOrAddress val;
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val.addr = startAddr;
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tuiAddWinToLayout (DISASSEM_WIN);
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tuiUpdateSourceWindow (disassemWin, s, val, FALSE);
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/*
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** if the focus was in the src win, put it in the asm win, if the
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** source view isn't split
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*/
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if (currentLayout () != SRC_DISASSEM_COMMAND && winWithFocus == srcWin)
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tuiSetWinFocusTo (disassemWin);
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return;
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} /* tuiShowDisassem */
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/*
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** tuiShowDisassemAndUpdateSource().
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** Function to display the disassembly window.
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*/
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void
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tuiShowDisassemAndUpdateSource (CORE_ADDR startAddr)
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{
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struct symtab_and_line sal;
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tuiShowDisassem (startAddr);
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if (currentLayout () == SRC_DISASSEM_COMMAND)
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{
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TuiLineOrAddress val;
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TuiGenWinInfoPtr locator = locatorWinInfoPtr ();
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/*
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** Update what is in the source window if it is displayed too,
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** note that it follows what is in the disassembly window and visa-versa
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*/
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sal = find_pc_line (startAddr, 0);
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val.lineNo = sal.line;
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tuiUpdateSourceWindow (srcWin, sal.symtab, val, TRUE);
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if (sal.symtab)
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{
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current_source_symtab = sal.symtab;
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tuiUpdateLocatorFilename (sal.symtab->filename);
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}
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else
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tuiUpdateLocatorFilename ("?");
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}
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return;
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} /* tuiShowDisassemAndUpdateSource */
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/*
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** tuiGetBeginAsmAddress().
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*/
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CORE_ADDR
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tuiGetBeginAsmAddress (void)
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{
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TuiGenWinInfoPtr locator;
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TuiLocatorElementPtr element;
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CORE_ADDR addr;
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locator = locatorWinInfoPtr ();
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element = &((TuiWinElementPtr) locator->content[0])->whichElement.locator;
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if (element->addr == 0)
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{
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/*the target is not executing, because the pc is 0 */
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addr = parse_and_eval_address ("main");
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if (addr == 0)
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addr = parse_and_eval_address ("MAIN");
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}
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else /* the target is executing */
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addr = element->addr;
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return addr;
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} /* tuiGetBeginAsmAddress */
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/*
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** tuiVerticalDisassemScroll().
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** Scroll the disassembly forward or backward vertically
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*/
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void
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tuiVerticalDisassemScroll (TuiScrollDirection scrollDirection,
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int numToScroll)
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{
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if (disassemWin->generic.content != (OpaquePtr) NULL)
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{
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CORE_ADDR pc, lowAddr;
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TuiWinContent content;
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struct symtab *s;
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content = (TuiWinContent) disassemWin->generic.content;
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if (current_source_symtab == (struct symtab *) NULL)
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s = find_pc_symtab (selected_frame->pc);
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else
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s = current_source_symtab;
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pc = content[0]->whichElement.source.lineOrAddr.addr;
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if (find_pc_partial_function (pc, (char **) NULL, &lowAddr,
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(CORE_ADDR) 0) == 0)
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error ("No function contains program counter for selected frame.\n");
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else
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{
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register int line = 0;
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register CORE_ADDR newLow;
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bfd_byte buffer[4];
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TuiLineOrAddress val;
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newLow = pc;
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if (scrollDirection == FORWARD_SCROLL)
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{
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for (; line < numToScroll; line++)
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newLow += sizeof (bfd_getb32 (buffer));
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}
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else
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{
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for (; newLow != 0 && line < numToScroll; line++)
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newLow -= sizeof (bfd_getb32 (buffer));
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}
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val.addr = newLow;
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tuiUpdateSourceWindowAsIs (disassemWin, s, val, FALSE);
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}
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}
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return;
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} /* tuiVerticalDisassemScroll */
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/*****************************************
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** STATIC LOCAL FUNCTIONS **
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******************************************/
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/*
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** _hasBreak().
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** Answer whether there is a break point at the input line in the
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** source file indicated
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*/
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static struct breakpoint *
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_hasBreak (CORE_ADDR addr)
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{
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struct breakpoint *bpWithBreak = (struct breakpoint *) NULL;
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struct breakpoint *bp;
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extern struct breakpoint *breakpoint_chain;
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for (bp = breakpoint_chain;
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(bp != (struct breakpoint *) NULL &&
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bpWithBreak == (struct breakpoint *) NULL);
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bp = bp->next)
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if (addr == bp->address)
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bpWithBreak = bp;
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return bpWithBreak;
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} /* _hasBreak */
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