/* Disassembly display.
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/* Disassembly display.
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Copyright (C) 1998, 1999, 2000, 2001, 2002, 2003, 2004, 2007, 2008
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Copyright (C) 1998, 1999, 2000, 2001, 2002, 2003, 2004, 2007, 2008
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Free Software Foundation, Inc.
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Free Software Foundation, Inc.
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Contributed by Hewlett-Packard Company.
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Contributed by Hewlett-Packard Company.
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This file is part of GDB.
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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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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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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 3 of the License, or
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the Free Software Foundation; either version 3 of the License, or
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(at your option) any later version.
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(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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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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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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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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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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You should have received a copy of the GNU General Public License
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along with this program. If not, see <http://www.gnu.org/licenses/>. */
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along with this program. If not, see <http://www.gnu.org/licenses/>. */
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#include "defs.h"
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#include "defs.h"
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#include "symtab.h"
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#include "symtab.h"
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#include "breakpoint.h"
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#include "breakpoint.h"
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#include "frame.h"
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#include "frame.h"
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#include "value.h"
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#include "value.h"
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#include "source.h"
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#include "source.h"
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#include "disasm.h"
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#include "disasm.h"
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#include "gdb_string.h"
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#include "gdb_string.h"
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#include "tui/tui.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-data.h"
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#include "tui/tui-win.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-layout.h"
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#include "tui/tui-winsource.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-stack.h"
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#include "tui/tui-file.h"
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#include "tui/tui-file.h"
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#include "gdb_curses.h"
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#include "gdb_curses.h"
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struct tui_asm_line
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struct tui_asm_line
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{
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{
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CORE_ADDR addr;
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CORE_ADDR addr;
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char *addr_string;
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char *addr_string;
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char *insn;
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char *insn;
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};
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};
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/* Function to set the disassembly window's content.
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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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Disassemble count lines starting at pc.
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Return address of the count'th instruction after 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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static CORE_ADDR
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tui_disassemble (struct tui_asm_line *asm_lines,
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tui_disassemble (struct tui_asm_line *asm_lines,
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CORE_ADDR pc, int count)
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CORE_ADDR pc, int count)
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{
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{
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struct ui_file *gdb_dis_out;
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struct ui_file *gdb_dis_out;
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/* Now init the ui_file structure. */
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/* Now init the ui_file structure. */
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gdb_dis_out = tui_sfileopen (256);
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gdb_dis_out = tui_sfileopen (256);
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/* Now construct each line. */
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/* Now construct each line. */
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for (; count > 0; count--, asm_lines++)
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for (; count > 0; count--, asm_lines++)
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{
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{
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if (asm_lines->addr_string)
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if (asm_lines->addr_string)
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xfree (asm_lines->addr_string);
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xfree (asm_lines->addr_string);
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if (asm_lines->insn)
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if (asm_lines->insn)
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xfree (asm_lines->insn);
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xfree (asm_lines->insn);
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print_address (pc, gdb_dis_out);
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print_address (pc, gdb_dis_out);
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asm_lines->addr = pc;
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asm_lines->addr = pc;
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asm_lines->addr_string = xstrdup (tui_file_get_strbuf (gdb_dis_out));
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asm_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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ui_file_rewind (gdb_dis_out);
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pc = pc + gdb_print_insn (pc, gdb_dis_out, NULL);
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pc = pc + gdb_print_insn (pc, gdb_dis_out, NULL);
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asm_lines->insn = xstrdup (tui_file_get_strbuf (gdb_dis_out));
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asm_lines->insn = xstrdup (tui_file_get_strbuf (gdb_dis_out));
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/* Reset the buffer to empty. */
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/* Reset the buffer to empty. */
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ui_file_rewind (gdb_dis_out);
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ui_file_rewind (gdb_dis_out);
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}
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}
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ui_file_delete (gdb_dis_out);
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ui_file_delete (gdb_dis_out);
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return pc;
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return pc;
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}
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}
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/* Find the disassembly address that corresponds to FROM lines above
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/* Find the disassembly address that corresponds to FROM lines above
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or below the PC. Variable sized instructions are taken into
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or below the PC. Variable sized instructions are taken into
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account by the algorithm. */
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account by the algorithm. */
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static CORE_ADDR
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static CORE_ADDR
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tui_find_disassembly_address (CORE_ADDR pc, int from)
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tui_find_disassembly_address (CORE_ADDR pc, int from)
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{
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{
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CORE_ADDR new_low;
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CORE_ADDR new_low;
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int max_lines;
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int max_lines;
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int i;
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int i;
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struct tui_asm_line *asm_lines;
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struct tui_asm_line *asm_lines;
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max_lines = (from > 0) ? from : - from;
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max_lines = (from > 0) ? from : - from;
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if (max_lines <= 1)
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if (max_lines <= 1)
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return pc;
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return pc;
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asm_lines = (struct tui_asm_line*) alloca (sizeof (struct tui_asm_line)
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asm_lines = (struct tui_asm_line*) alloca (sizeof (struct tui_asm_line)
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* max_lines);
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* max_lines);
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memset (asm_lines, 0, sizeof (struct tui_asm_line) * max_lines);
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memset (asm_lines, 0, sizeof (struct tui_asm_line) * max_lines);
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new_low = pc;
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new_low = pc;
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if (from > 0)
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if (from > 0)
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{
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{
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tui_disassemble (asm_lines, pc, max_lines);
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tui_disassemble (asm_lines, pc, max_lines);
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new_low = asm_lines[max_lines - 1].addr;
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new_low = asm_lines[max_lines - 1].addr;
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}
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}
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else
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else
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{
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{
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CORE_ADDR last_addr;
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CORE_ADDR last_addr;
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int pos;
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int pos;
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struct minimal_symbol *msymbol;
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struct minimal_symbol *msymbol;
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/* Find backward an address which is a symbol and for which
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/* Find backward an address which is a symbol and for which
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disassembling from that address will fill completely the
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disassembling from that address will fill completely the
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window. */
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window. */
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pos = max_lines - 1;
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pos = max_lines - 1;
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do {
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do {
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new_low -= 1 * max_lines;
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new_low -= 1 * max_lines;
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msymbol = lookup_minimal_symbol_by_pc_section (new_low, 0);
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msymbol = lookup_minimal_symbol_by_pc_section (new_low, 0);
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if (msymbol)
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if (msymbol)
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new_low = SYMBOL_VALUE_ADDRESS (msymbol);
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new_low = SYMBOL_VALUE_ADDRESS (msymbol);
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else
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else
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new_low += 1 * max_lines;
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new_low += 1 * max_lines;
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tui_disassemble (asm_lines, new_low, max_lines);
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tui_disassemble (asm_lines, new_low, max_lines);
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last_addr = asm_lines[pos].addr;
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last_addr = asm_lines[pos].addr;
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} while (last_addr > pc && msymbol);
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} while (last_addr > pc && msymbol);
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/* Scan forward disassembling one instruction at a time until
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/* Scan forward disassembling one instruction at a time until
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the last visible instruction of the window matches the pc.
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the last visible instruction of the window matches the pc.
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We keep the disassembled instructions in the 'lines' window
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We keep the disassembled instructions in the 'lines' window
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and shift it downward (increasing its addresses). */
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and shift it downward (increasing its addresses). */
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if (last_addr < pc)
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if (last_addr < pc)
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do
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do
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{
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{
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CORE_ADDR next_addr;
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CORE_ADDR next_addr;
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pos++;
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pos++;
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if (pos >= max_lines)
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if (pos >= max_lines)
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pos = 0;
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pos = 0;
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next_addr = tui_disassemble (&asm_lines[pos], last_addr, 1);
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next_addr = tui_disassemble (&asm_lines[pos], last_addr, 1);
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/* If there are some problems while disassembling exit. */
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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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if (next_addr <= last_addr)
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break;
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break;
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last_addr = next_addr;
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last_addr = next_addr;
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} while (last_addr <= pc);
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} while (last_addr <= pc);
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pos++;
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pos++;
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if (pos >= max_lines)
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if (pos >= max_lines)
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pos = 0;
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pos = 0;
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new_low = asm_lines[pos].addr;
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new_low = asm_lines[pos].addr;
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}
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}
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for (i = 0; i < max_lines; i++)
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for (i = 0; i < max_lines; i++)
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{
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{
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xfree (asm_lines[i].addr_string);
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xfree (asm_lines[i].addr_string);
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xfree (asm_lines[i].insn);
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xfree (asm_lines[i].insn);
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}
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}
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return new_low;
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return new_low;
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}
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}
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/* Function to set the disassembly window's content. */
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/* Function to set the disassembly window's content. */
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enum tui_status
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enum tui_status
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tui_set_disassem_content (CORE_ADDR pc)
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tui_set_disassem_content (CORE_ADDR pc)
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{
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{
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enum tui_status ret = TUI_FAILURE;
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enum tui_status ret = TUI_FAILURE;
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int i;
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int i;
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int offset = TUI_DISASM_WIN->detail.source_info.horizontal_offset;
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int offset = TUI_DISASM_WIN->detail.source_info.horizontal_offset;
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int line_width, max_lines;
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int line_width, max_lines;
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CORE_ADDR cur_pc;
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CORE_ADDR cur_pc;
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struct tui_gen_win_info *locator = tui_locator_win_info_ptr ();
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struct tui_gen_win_info *locator = tui_locator_win_info_ptr ();
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int tab_len = tui_default_tab_len ();
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int tab_len = tui_default_tab_len ();
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struct tui_asm_line *asm_lines;
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struct tui_asm_line *asm_lines;
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int insn_pos;
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int insn_pos;
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int addr_size, max_size;
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int addr_size, max_size;
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char *line;
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char *line;
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if (pc == 0)
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if (pc == 0)
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return TUI_FAILURE;
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return TUI_FAILURE;
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ret = tui_alloc_source_buffer (TUI_DISASM_WIN);
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ret = tui_alloc_source_buffer (TUI_DISASM_WIN);
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if (ret != TUI_SUCCESS)
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if (ret != TUI_SUCCESS)
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return ret;
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return ret;
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TUI_DISASM_WIN->detail.source_info.start_line_or_addr.loa = LOA_ADDRESS;
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TUI_DISASM_WIN->detail.source_info.start_line_or_addr.loa = LOA_ADDRESS;
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TUI_DISASM_WIN->detail.source_info.start_line_or_addr.u.addr = pc;
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TUI_DISASM_WIN->detail.source_info.start_line_or_addr.u.addr = pc;
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cur_pc = (CORE_ADDR)
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cur_pc = (CORE_ADDR)
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(((struct tui_win_element *) locator->content[0])->which_element.locator.addr);
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(((struct tui_win_element *) locator->content[0])->which_element.locator.addr);
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max_lines = TUI_DISASM_WIN->generic.height - 2; /* Account for
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max_lines = TUI_DISASM_WIN->generic.height - 2; /* Account for
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hilite. */
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hilite. */
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/* Get temporary table that will hold all strings (addr & insn). */
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/* Get temporary table that will hold all strings (addr & insn). */
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asm_lines = (struct tui_asm_line*) alloca (sizeof (struct tui_asm_line)
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asm_lines = (struct tui_asm_line*) alloca (sizeof (struct tui_asm_line)
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* max_lines);
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* max_lines);
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memset (asm_lines, 0, sizeof (struct tui_asm_line) * max_lines);
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memset (asm_lines, 0, sizeof (struct tui_asm_line) * max_lines);
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line_width = TUI_DISASM_WIN->generic.width - 1;
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line_width = TUI_DISASM_WIN->generic.width - 1;
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tui_disassemble (asm_lines, pc, max_lines);
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tui_disassemble (asm_lines, pc, max_lines);
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/* See what is the maximum length of an address and of a line. */
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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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addr_size = 0;
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max_size = 0;
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max_size = 0;
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for (i = 0; i < max_lines; i++)
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for (i = 0; i < max_lines; i++)
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{
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{
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size_t len = strlen (asm_lines[i].addr_string);
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size_t len = strlen (asm_lines[i].addr_string);
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if (len > addr_size)
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if (len > addr_size)
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addr_size = len;
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addr_size = len;
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len = strlen (asm_lines[i].insn) + tab_len;
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len = strlen (asm_lines[i].insn) + tab_len;
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if (len > max_size)
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if (len > max_size)
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max_size = len;
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max_size = len;
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}
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}
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max_size += addr_size + tab_len;
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max_size += addr_size + tab_len;
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/* Allocate memory to create each line. */
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/* Allocate memory to create each line. */
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line = (char*) alloca (max_size);
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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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insn_pos = (1 + (addr_size / tab_len)) * tab_len;
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/* Now construct each line. */
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/* Now construct each line. */
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for (i = 0; i < max_lines; i++)
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for (i = 0; i < max_lines; i++)
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{
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{
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struct tui_win_element *element;
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struct tui_win_element *element;
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struct tui_source_element *src;
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struct tui_source_element *src;
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int cur_len;
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int cur_len;
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element = (struct tui_win_element *) TUI_DISASM_WIN->generic.content[i];
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element = (struct tui_win_element *) TUI_DISASM_WIN->generic.content[i];
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src = &element->which_element.source;
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src = &element->which_element.source;
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strcpy (line, asm_lines[i].addr_string);
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strcpy (line, asm_lines[i].addr_string);
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cur_len = strlen (line);
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cur_len = strlen (line);
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/* Add spaces to make the instructions start on the same
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/* Add spaces to make the instructions start on the same
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column. */
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column. */
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while (cur_len < insn_pos)
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while (cur_len < insn_pos)
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{
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{
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strcat (line, " ");
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strcat (line, " ");
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cur_len++;
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cur_len++;
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}
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}
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strcat (line, asm_lines[i].insn);
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strcat (line, asm_lines[i].insn);
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/* Now copy the line taking the offset into account. */
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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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if (strlen (line) > offset)
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strcpy (src->line, &line[offset]);
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strcpy (src->line, &line[offset]);
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else
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else
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src->line[0] = '\0';
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src->line[0] = '\0';
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src->line_or_addr.loa = LOA_ADDRESS;
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src->line_or_addr.loa = LOA_ADDRESS;
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src->line_or_addr.u.addr = asm_lines[i].addr;
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src->line_or_addr.u.addr = asm_lines[i].addr;
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src->is_exec_point = asm_lines[i].addr == cur_pc;
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src->is_exec_point = asm_lines[i].addr == cur_pc;
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/* See whether there is a breakpoint installed. */
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/* See whether there is a breakpoint installed. */
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src->has_break = (!src->is_exec_point
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src->has_break = (!src->is_exec_point
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&& breakpoint_here_p (pc) != no_breakpoint_here);
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&& breakpoint_here_p (pc) != no_breakpoint_here);
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xfree (asm_lines[i].addr_string);
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xfree (asm_lines[i].addr_string);
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xfree (asm_lines[i].insn);
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xfree (asm_lines[i].insn);
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}
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}
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TUI_DISASM_WIN->generic.content_size = i;
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TUI_DISASM_WIN->generic.content_size = i;
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return TUI_SUCCESS;
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return TUI_SUCCESS;
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}
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}
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/* Function to display the disassembly window with disassembled code. */
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/* Function to display the disassembly window with disassembled code. */
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void
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void
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tui_show_disassem (CORE_ADDR start_addr)
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tui_show_disassem (CORE_ADDR start_addr)
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{
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{
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struct symtab *s = find_pc_symtab (start_addr);
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struct symtab *s = find_pc_symtab (start_addr);
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struct tui_win_info *win_with_focus = tui_win_with_focus ();
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struct tui_win_info *win_with_focus = tui_win_with_focus ();
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struct tui_line_or_address val;
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struct tui_line_or_address val;
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val.loa = LOA_ADDRESS;
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val.loa = LOA_ADDRESS;
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val.u.addr = start_addr;
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val.u.addr = start_addr;
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tui_add_win_to_layout (DISASSEM_WIN);
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tui_add_win_to_layout (DISASSEM_WIN);
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tui_update_source_window (TUI_DISASM_WIN, s, val, FALSE);
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tui_update_source_window (TUI_DISASM_WIN, s, val, FALSE);
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/* If the focus was in the src win, put it in the asm win, if the
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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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source view isn't split. */
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if (tui_current_layout () != SRC_DISASSEM_COMMAND
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if (tui_current_layout () != SRC_DISASSEM_COMMAND
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&& win_with_focus == TUI_SRC_WIN)
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&& win_with_focus == TUI_SRC_WIN)
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tui_set_win_focus_to (TUI_DISASM_WIN);
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tui_set_win_focus_to (TUI_DISASM_WIN);
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|
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return;
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return;
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}
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}
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/* Function to display the disassembly window. */
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/* Function to display the disassembly window. */
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void
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void
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tui_show_disassem_and_update_source (CORE_ADDR start_addr)
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tui_show_disassem_and_update_source (CORE_ADDR start_addr)
|
{
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{
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struct symtab_and_line sal;
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struct symtab_and_line sal;
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|
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tui_show_disassem (start_addr);
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tui_show_disassem (start_addr);
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if (tui_current_layout () == SRC_DISASSEM_COMMAND)
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if (tui_current_layout () == SRC_DISASSEM_COMMAND)
|
{
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{
|
struct tui_line_or_address val;
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struct tui_line_or_address 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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/* 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
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note that it follows what is in the disassembly window and
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visa-versa. */
|
visa-versa. */
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sal = find_pc_line (start_addr, 0);
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sal = find_pc_line (start_addr, 0);
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val.loa = LOA_LINE;
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val.loa = LOA_LINE;
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val.u.line_no = sal.line;
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val.u.line_no = sal.line;
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tui_update_source_window (TUI_SRC_WIN, sal.symtab, val, TRUE);
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tui_update_source_window (TUI_SRC_WIN, sal.symtab, val, TRUE);
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if (sal.symtab)
|
if (sal.symtab)
|
{
|
{
|
set_current_source_symtab_and_line (&sal);
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set_current_source_symtab_and_line (&sal);
|
tui_update_locator_filename (sal.symtab->filename);
|
tui_update_locator_filename (sal.symtab->filename);
|
}
|
}
|
else
|
else
|
tui_update_locator_filename ("?");
|
tui_update_locator_filename ("?");
|
}
|
}
|
|
|
return;
|
return;
|
}
|
}
|
|
|
CORE_ADDR
|
CORE_ADDR
|
tui_get_begin_asm_address (void)
|
tui_get_begin_asm_address (void)
|
{
|
{
|
struct tui_gen_win_info *locator;
|
struct tui_gen_win_info *locator;
|
struct tui_locator_element *element;
|
struct tui_locator_element *element;
|
CORE_ADDR addr;
|
CORE_ADDR addr;
|
|
|
locator = tui_locator_win_info_ptr ();
|
locator = tui_locator_win_info_ptr ();
|
element = &((struct tui_win_element *) locator->content[0])->which_element.locator;
|
element = &((struct tui_win_element *) locator->content[0])->which_element.locator;
|
|
|
if (element->addr == 0)
|
if (element->addr == 0)
|
{
|
{
|
struct minimal_symbol *main_symbol;
|
struct minimal_symbol *main_symbol;
|
|
|
/* Find address of the start of program.
|
/* Find address of the start of program.
|
Note: this should be language specific. */
|
Note: this should be language specific. */
|
main_symbol = lookup_minimal_symbol ("main", NULL, NULL);
|
main_symbol = lookup_minimal_symbol ("main", NULL, NULL);
|
if (main_symbol == 0)
|
if (main_symbol == 0)
|
main_symbol = lookup_minimal_symbol ("MAIN", NULL, NULL);
|
main_symbol = lookup_minimal_symbol ("MAIN", NULL, NULL);
|
if (main_symbol == 0)
|
if (main_symbol == 0)
|
main_symbol = lookup_minimal_symbol ("_start", NULL, NULL);
|
main_symbol = lookup_minimal_symbol ("_start", NULL, NULL);
|
if (main_symbol)
|
if (main_symbol)
|
addr = SYMBOL_VALUE_ADDRESS (main_symbol);
|
addr = SYMBOL_VALUE_ADDRESS (main_symbol);
|
else
|
else
|
addr = 0;
|
addr = 0;
|
}
|
}
|
else /* The target is executing. */
|
else /* The target is executing. */
|
addr = element->addr;
|
addr = element->addr;
|
|
|
return addr;
|
return addr;
|
}
|
}
|
|
|
/* Determine what the low address will be to display in the TUI's
|
/* Determine what the low address will be to display in the TUI's
|
disassembly window. This may or may not be the same as the low
|
disassembly window. This may or may not be the same as the low
|
address input. */
|
address input. */
|
CORE_ADDR
|
CORE_ADDR
|
tui_get_low_disassembly_address (CORE_ADDR low,
|
tui_get_low_disassembly_address (CORE_ADDR low,
|
CORE_ADDR pc)
|
CORE_ADDR pc)
|
{
|
{
|
int pos;
|
int pos;
|
|
|
/* Determine where to start the disassembly so that the pc is about
|
/* Determine where to start the disassembly so that the pc is about
|
in the middle of the viewport. */
|
in the middle of the viewport. */
|
pos = tui_default_win_viewport_height (DISASSEM_WIN, DISASSEM_COMMAND) / 2;
|
pos = tui_default_win_viewport_height (DISASSEM_WIN, DISASSEM_COMMAND) / 2;
|
pc = tui_find_disassembly_address (pc, -pos);
|
pc = tui_find_disassembly_address (pc, -pos);
|
|
|
if (pc < low)
|
if (pc < low)
|
pc = low;
|
pc = low;
|
return pc;
|
return pc;
|
}
|
}
|
|
|
/* Scroll the disassembly forward or backward vertically. */
|
/* Scroll the disassembly forward or backward vertically. */
|
void
|
void
|
tui_vertical_disassem_scroll (enum tui_scroll_direction scroll_direction,
|
tui_vertical_disassem_scroll (enum tui_scroll_direction scroll_direction,
|
int num_to_scroll)
|
int num_to_scroll)
|
{
|
{
|
if (TUI_DISASM_WIN->generic.content != NULL)
|
if (TUI_DISASM_WIN->generic.content != NULL)
|
{
|
{
|
CORE_ADDR pc;
|
CORE_ADDR pc;
|
tui_win_content content;
|
tui_win_content content;
|
struct symtab *s;
|
struct symtab *s;
|
struct tui_line_or_address val;
|
struct tui_line_or_address val;
|
int max_lines, dir;
|
int max_lines, dir;
|
struct symtab_and_line cursal = get_current_source_symtab_and_line ();
|
struct symtab_and_line cursal = get_current_source_symtab_and_line ();
|
|
|
content = (tui_win_content) TUI_DISASM_WIN->generic.content;
|
content = (tui_win_content) TUI_DISASM_WIN->generic.content;
|
if (cursal.symtab == (struct symtab *) NULL)
|
if (cursal.symtab == (struct symtab *) NULL)
|
s = find_pc_symtab (get_frame_pc (get_selected_frame (NULL)));
|
s = find_pc_symtab (get_frame_pc (get_selected_frame (NULL)));
|
else
|
else
|
s = cursal.symtab;
|
s = cursal.symtab;
|
|
|
/* Account for hilite. */
|
/* Account for hilite. */
|
max_lines = TUI_DISASM_WIN->generic.height - 2;
|
max_lines = TUI_DISASM_WIN->generic.height - 2;
|
pc = content[0]->which_element.source.line_or_addr.u.addr;
|
pc = content[0]->which_element.source.line_or_addr.u.addr;
|
dir = (scroll_direction == FORWARD_SCROLL) ? max_lines : - max_lines;
|
dir = (scroll_direction == FORWARD_SCROLL) ? max_lines : - max_lines;
|
|
|
val.loa = LOA_ADDRESS;
|
val.loa = LOA_ADDRESS;
|
val.u.addr = tui_find_disassembly_address (pc, dir);
|
val.u.addr = tui_find_disassembly_address (pc, dir);
|
tui_update_source_window_as_is (TUI_DISASM_WIN, s, val, FALSE);
|
tui_update_source_window_as_is (TUI_DISASM_WIN, s, val, FALSE);
|
}
|
}
|
}
|
}
|
|
|
