47d3492a0e
* tui/tui-stack.h: Update copyright. (struct frame_info): Add opaque declaration. (tui_update_locator_filename): Rename tuiUpdateLocatorFilename. (tui_show_locator_content): Rename tuiShowLocatorContent. (tui_show_frame_info): Rename tuiShowFrameInfo. * tui/tui-stack.c: Update copyright. Update references. * tui/tui-winsource.c: Update references. * tui/tui-win.c: Update references. * tui/tui-layout.c: Update references. * tui/tui-hooks.c: Update copyright, update references. * tui/tui.c: Update copyright, update references. * tui/tui-disasm.c: Update references.
403 lines
11 KiB
C
403 lines
11 KiB
C
/* Disassembly display.
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Copyright 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., 59 Temple Place - Suite 330,
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Boston, MA 02111-1307, USA. */
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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 "source.h"
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#include "disasm.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-win.h"
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#include "tui/tui-layout.h"
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#include "tui/tui-winsource.h"
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#include "tui/tui-stack.h"
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#include "tui/tui-file.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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struct tui_asm_line
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{
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CORE_ADDR addr;
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char* addr_string;
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char* insn;
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};
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/* Function to set the disassembly window's content.
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Disassemble count lines starting at pc.
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Return address of the count'th instruction after pc. */
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static CORE_ADDR
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tui_disassemble (struct tui_asm_line* lines, CORE_ADDR pc, int count)
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{
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struct ui_file *gdb_dis_out;
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/* now init the ui_file structure */
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gdb_dis_out = tui_sfileopen (256);
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/* Now construct each line */
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for (; count > 0; count--, lines++)
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{
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if (lines->addr_string)
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xfree (lines->addr_string);
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if (lines->insn)
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xfree (lines->insn);
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print_address (pc, gdb_dis_out);
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lines->addr = pc;
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lines->addr_string = xstrdup (tui_file_get_strbuf (gdb_dis_out));
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ui_file_rewind (gdb_dis_out);
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pc = pc + gdb_print_insn (pc, gdb_dis_out);
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lines->insn = xstrdup (tui_file_get_strbuf (gdb_dis_out));
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/* reset the buffer to empty */
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ui_file_rewind (gdb_dis_out);
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}
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ui_file_delete (gdb_dis_out);
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return pc;
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}
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/* Find the disassembly address that corresponds to FROM lines
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above or below the PC. Variable sized instructions are taken
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into account by the algorithm. */
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static CORE_ADDR
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tui_find_disassembly_address (CORE_ADDR pc, int from)
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{
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register CORE_ADDR newLow;
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int maxLines;
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int i;
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struct tui_asm_line* lines;
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maxLines = (from > 0) ? from : - from;
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if (maxLines <= 1)
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return pc;
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lines = (struct tui_asm_line*) alloca (sizeof (struct tui_asm_line)
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* maxLines);
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memset (lines, 0, sizeof (struct tui_asm_line) * maxLines);
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newLow = pc;
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if (from > 0)
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{
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tui_disassemble (lines, pc, maxLines);
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newLow = lines[maxLines - 1].addr;
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}
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else
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{
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CORE_ADDR last_addr;
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int pos;
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struct minimal_symbol* msymbol;
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/* Find backward an address which is a symbol
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and for which disassembling from that address will fill
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completely the window. */
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pos = maxLines - 1;
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do {
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newLow -= 1 * maxLines;
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msymbol = lookup_minimal_symbol_by_pc_section (newLow, 0);
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if (msymbol)
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newLow = SYMBOL_VALUE_ADDRESS (msymbol);
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else
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newLow += 1 * maxLines;
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tui_disassemble (lines, newLow, maxLines);
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last_addr = lines[pos].addr;
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} while (last_addr > pc && msymbol);
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/* Scan forward disassembling one instruction at a time
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until the last visible instruction of the window
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matches the pc. We keep the disassembled instructions
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in the 'lines' window and shift it downward (increasing
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its addresses). */
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if (last_addr < pc)
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do
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{
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CORE_ADDR next_addr;
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pos++;
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if (pos >= maxLines)
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pos = 0;
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next_addr = tui_disassemble (&lines[pos], last_addr, 1);
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/* If there are some problems while disassembling exit. */
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if (next_addr <= last_addr)
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break;
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last_addr = next_addr;
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} while (last_addr <= pc);
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pos++;
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if (pos >= maxLines)
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pos = 0;
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newLow = lines[pos].addr;
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}
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for (i = 0; i < maxLines; i++)
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{
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xfree (lines[i].addr_string);
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xfree (lines[i].insn);
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}
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return newLow;
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}
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/* Function to set the disassembly window's content. */
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enum tui_status
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tui_set_disassem_content (CORE_ADDR pc)
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{
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TuiStatus ret = TUI_FAILURE;
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register int i;
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register int offset = disassemWin->detail.sourceInfo.horizontalOffset;
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register int lineWidth, maxLines;
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CORE_ADDR cur_pc;
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TuiGenWinInfoPtr locator = locatorWinInfoPtr ();
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int tab_len = tuiDefaultTabLen ();
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struct tui_asm_line* lines;
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int insn_pos;
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int addr_size, max_size;
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char* line;
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if (pc == 0)
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return TUI_FAILURE;
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ret = tuiAllocSourceBuffer (disassemWin);
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if (ret != TUI_SUCCESS)
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return ret;
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disassemWin->detail.sourceInfo.startLineOrAddr.addr = pc;
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cur_pc = (CORE_ADDR)
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(((TuiWinElementPtr) locator->content[0])->whichElement.locator.addr);
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maxLines = disassemWin->generic.height - 2; /* account for hilite */
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/* Get temporary table that will hold all strings (addr & insn). */
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lines = (struct tui_asm_line*) alloca (sizeof (struct tui_asm_line)
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* maxLines);
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memset (lines, 0, sizeof (struct tui_asm_line) * maxLines);
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lineWidth = disassemWin->generic.width - 1;
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tui_disassemble (lines, pc, maxLines);
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/* See what is the maximum length of an address and of a line. */
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addr_size = 0;
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max_size = 0;
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for (i = 0; i < maxLines; i++)
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{
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size_t len = strlen (lines[i].addr_string);
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if (len > addr_size)
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addr_size = len;
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len = strlen (lines[i].insn) + tab_len;
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if (len > max_size)
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max_size = len;
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}
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max_size += addr_size + tab_len;
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/* Allocate memory to create each line. */
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line = (char*) alloca (max_size);
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insn_pos = (1 + (addr_size / tab_len)) * tab_len;
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/* Now construct each line */
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for (i = 0; i < maxLines; i++)
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{
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TuiWinElementPtr element;
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TuiSourceElement* src;
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int curLen;
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element = (TuiWinElementPtr) disassemWin->generic.content[i];
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src = &element->whichElement.source;
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strcpy (line, lines[i].addr_string);
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curLen = strlen (line);
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/* Add spaces to make the instructions start on the same column */
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while (curLen < insn_pos)
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{
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strcat (line, " ");
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curLen++;
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}
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strcat (line, lines[i].insn);
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/* Now copy the line taking the offset into account */
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if (strlen (line) > offset)
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strcpy (src->line, &line[offset]);
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else
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src->line[0] = '\0';
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src->lineOrAddr.addr = lines[i].addr;
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src->isExecPoint = lines[i].addr == cur_pc;
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/* See whether there is a breakpoint installed. */
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src->hasBreak = (!src->isExecPoint
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&& breakpoint_here_p (pc) != no_breakpoint_here);
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xfree (lines[i].addr_string);
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xfree (lines[i].insn);
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}
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disassemWin->generic.contentSize = i;
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return TUI_SUCCESS;
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}
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/* Function to display the disassembly window with disassembled code. */
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void
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tui_show_disassem (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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tui_add_win_to_layout (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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}
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/* Function to display the disassembly window. */
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void
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tui_show_disassem_and_update_source (CORE_ADDR startAddr)
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{
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struct symtab_and_line sal;
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tui_show_disassem (startAddr);
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if (currentLayout () == SRC_DISASSEM_COMMAND)
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{
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TuiLineOrAddress val;
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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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set_current_source_symtab_and_line (&sal);
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tui_update_locator_filename (sal.symtab->filename);
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}
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else
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tui_update_locator_filename ("?");
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}
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return;
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}
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CORE_ADDR
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tui_get_begin_asm_address (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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struct minimal_symbol *main_symbol;
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/* Find address of the start of program.
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Note: this should be language specific. */
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main_symbol = lookup_minimal_symbol ("main", NULL, NULL);
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if (main_symbol == 0)
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main_symbol = lookup_minimal_symbol ("MAIN", NULL, NULL);
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if (main_symbol == 0)
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main_symbol = lookup_minimal_symbol ("_start", NULL, NULL);
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if (main_symbol)
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addr = SYMBOL_VALUE_ADDRESS (main_symbol);
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else
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addr = 0;
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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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}
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/* Determine what the low address will be to display in the TUI's
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disassembly window. This may or may not be the same as the
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low address input. */
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CORE_ADDR
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tuiGetLowDisassemblyAddress (CORE_ADDR low, CORE_ADDR pc)
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{
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int pos;
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/* Determine where to start the disassembly so that the pc is about in the
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middle of the viewport. */
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pos = tui_default_win_viewport_height (DISASSEM_WIN, DISASSEM_COMMAND) / 2;
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pc = tui_find_disassembly_address (pc, -pos);
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if (pc < low)
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pc = low;
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return pc;
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}
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/* Scroll the disassembly forward or backward vertically. */
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void
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tui_vertical_disassem_scroll (enum tui_scroll_direction 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;
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TuiWinContent content;
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struct symtab *s;
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TuiLineOrAddress val;
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int maxLines, dir;
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struct symtab_and_line cursal = get_current_source_symtab_and_line ();
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content = (TuiWinContent) disassemWin->generic.content;
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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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/* account for hilite */
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maxLines = disassemWin->generic.height - 2;
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pc = content[0]->whichElement.source.lineOrAddr.addr;
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dir = (scrollDirection == FORWARD_SCROLL) ? maxLines : - maxLines;
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val.addr = tui_find_disassembly_address (pc, dir);
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tuiUpdateSourceWindowAsIs (disassemWin, s, val, FALSE);
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}
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}
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