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/* |
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* Copyright (C) 2004-2006 Anders Gavare. All rights reserved. |
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* |
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* Redistribution and use in source and binary forms, with or without |
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* modification, are permitted provided that the following conditions are met: |
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* |
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* 1. Redistributions of source code must retain the above copyright |
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* notice, this list of conditions and the following disclaimer. |
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* 2. Redistributions in binary form must reproduce the above copyright |
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* notice, this list of conditions and the following disclaimer in the |
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* documentation and/or other materials provided with the distribution. |
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* 3. The name of the author may not be used to endorse or promote products |
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* derived from this software without specific prior written permission. |
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* |
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND |
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE |
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE |
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* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE |
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL |
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS |
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) |
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT |
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY |
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF |
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* SUCH DAMAGE. |
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* |
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* |
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* $Id: debugger.c,v 1.12 2006/06/25 01:25:32 debug Exp $ |
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* |
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* Single-step debugger. |
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* |
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* |
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* TODO: |
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* |
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* This entire module is very much non-reentrant. :-/ |
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* |
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* Add more functionality that already exists elsewhere in the emulator. |
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* |
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* Call stack display (back-trace)? |
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* |
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* More generic expression evaluator (for example + - * / between multiple |
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* terms), including _TAB COMPLETION_ of symbols and register names! |
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* Must be possible to reach any emul, any machine in any emul, any |
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* cpu in any machine, other variables in the emulator, and so forth. |
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* Perhaps a "settable variables registry" somewhere? |
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* |
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* Nicer looking output of register dumps, floating point registers, |
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* etc. Warn about weird/invalid register contents. |
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* |
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* Ctrl-C doesn't enter the debugger on some OSes (HP-UX?)... |
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* |
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* Many other TODOs. |
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*/ |
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|
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#include <ctype.h> |
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#include <signal.h> |
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#include <stdio.h> |
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#include <stdlib.h> |
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#include <string.h> |
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#include <unistd.h> |
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|
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#include "console.h" |
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#include "cpu.h" |
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#include "device.h" |
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#include "debugger.h" |
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#include "debugger_gdb.h" |
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#include "diskimage.h" |
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#include "emul.h" |
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#include "machine.h" |
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#include "memory.h" |
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#include "misc.h" |
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#include "net.h" |
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#include "settings.h" |
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#include "x11.h" |
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|
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|
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extern int extra_argc; |
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extern char **extra_argv; |
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extern struct settings *global_settings; |
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extern int quiet_mode; |
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|
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|
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/* |
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* Global debugger variables: |
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* |
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* TODO: Some of these should be moved to some other place! |
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*/ |
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|
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volatile int single_step = NOT_SINGLE_STEPPING; |
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volatile int exit_debugger; |
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int force_debugger_at_exit = 0; |
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int show_opcode_statistics = 0; |
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|
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volatile int single_step_breakpoint = 0; |
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int debugger_n_steps_left_before_interaction = 0; |
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|
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int old_instruction_trace = 0; |
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int old_quiet_mode = 0; |
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int old_show_trace_tree = 0; |
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|
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|
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/* |
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* Private (global) debugger variables: |
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*/ |
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|
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static volatile int ctrl_c; |
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|
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static int debugger_n_emuls; |
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static struct emul **debugger_emuls; |
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static struct emul *debugger_emul; |
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static struct machine *debugger_machine; |
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|
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#define MAX_CMD_BUFLEN 72 |
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#define N_PREVIOUS_CMDS 150 |
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static char *last_cmd[N_PREVIOUS_CMDS]; |
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static int last_cmd_index; |
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|
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static char repeat_cmd[MAX_CMD_BUFLEN]; |
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|
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#define MAGIC_UNTOUCHED 0x98ca76c2ffcc0011ULL |
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|
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static uint64_t last_dump_addr = MAGIC_UNTOUCHED; |
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static uint64_t last_unasm_addr = MAGIC_UNTOUCHED; |
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|
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|
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/* |
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* debugger_readchar(): |
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*/ |
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char debugger_readchar(void) |
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{ |
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int ch, i, j; |
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|
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while ((ch = console_readchar(MAIN_CONSOLE)) < 0 && !exit_debugger) { |
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/* Check for X11 events: */ |
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x11_check_event(debugger_emuls, debugger_n_emuls); |
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|
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/* Check for incoming GDB packets: */ |
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for (i=0; i<debugger_n_emuls; i++) { |
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struct emul *e = debugger_emuls[i]; |
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if (e == NULL) |
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continue; |
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|
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for (j=0; j<e->n_machines; j++) { |
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if (e->machines[j]->gdb.port > 0) |
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debugger_gdb_check_incoming( |
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e->machines[j]); |
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} |
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} |
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|
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/* TODO: The X11 and GDB checks above should probably |
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be factored out... */ |
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|
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/* Give up some CPU time: */ |
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usleep(1); |
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} |
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return ch; |
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} |
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|
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|
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/* |
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* debugger_activate(): |
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* |
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* This is a signal handler for CTRL-C. It shouldn't be called directly, |
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* but setup code in emul.c sets the CTRL-C signal handler to use this |
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* function. |
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*/ |
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void debugger_activate(int x) |
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{ |
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ctrl_c = 1; |
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|
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if (single_step != NOT_SINGLE_STEPPING) { |
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/* Already in the debugger. Do nothing. */ |
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int i; |
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for (i=0; i<MAX_CMD_BUFLEN; i++) |
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console_makeavail(MAIN_CONSOLE, '\b'); |
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console_makeavail(MAIN_CONSOLE, ' '); |
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console_makeavail(MAIN_CONSOLE, '\n'); |
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printf("^C"); |
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fflush(stdout); |
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} else { |
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/* Enter the single step debugger. */ |
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single_step = ENTER_SINGLE_STEPPING; |
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|
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/* Discard any chars in the input queue: */ |
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while (console_charavail(MAIN_CONSOLE)) |
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console_readchar(MAIN_CONSOLE); |
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} |
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|
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/* Clear the repeat-command buffer: */ |
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repeat_cmd[0] = '\0'; |
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|
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/* Reactivate the signal handler: */ |
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signal(SIGINT, debugger_activate); |
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} |
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|
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|
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/* |
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* debugger_parse_name(): |
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* |
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* This function reads a string, and tries to match it to a register name, |
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* a symbol, or treat it as a decimal numeric value. |
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* |
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* Some examples: |
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* |
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* "0x7fff1234" ==> numeric value (hex, in this case) |
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* "pc", "r5", "hi", "t4" ==> register (CPU dependent) |
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* "memcpy+64" ==> symbol (plus offset) |
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* |
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* Register names can be preceeded by "x:" where x is the CPU number. (CPU |
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* 0 is assumed by default.) |
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* |
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* To force detection of different types, a character can be added in front of |
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* the name: "$" for numeric values, "%" for registers, and "@" for symbols. |
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* |
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* Return value is: |
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* |
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* NAME_PARSE_NOMATCH no match |
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* NAME_PARSE_MULTIPLE multiple matches |
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* |
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* or one of these (and then *valuep is read or written, depending on |
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* the writeflag): |
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* |
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* NAME_PARSE_REGISTER a register |
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* NAME_PARSE_NUMBER a hex number |
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* NAME_PARSE_SYMBOL a symbol |
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*/ |
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#define NAME_PARSE_NOMATCH 0 |
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#define NAME_PARSE_MULTIPLE 1 |
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#define NAME_PARSE_REGISTER 2 |
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#define NAME_PARSE_NUMBER 3 |
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#define NAME_PARSE_SYMBOL 4 |
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static int debugger_parse_name(struct machine *m, char *name, int writeflag, |
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uint64_t *valuep) |
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{ |
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int match_register = 0, match_symbol = 0, match_numeric = 0; |
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int skip_register, skip_numeric, skip_symbol; |
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|
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if (m == NULL || name == NULL) { |
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fprintf(stderr, "debugger_parse_name(): NULL ptr\n"); |
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exit(1); |
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} |
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|
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/* Warn about non-signextended values: */ |
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if (writeflag) { |
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if (m->cpus[0]->is_32bit) { |
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/* Automagically sign-extend. TODO: Is this good? */ |
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if (((*valuep) >> 32) == 0 && (*valuep) & 0x80000000ULL) |
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(*valuep) |= 0xffffffff00000000ULL; |
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} else { |
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if (((*valuep) >> 32) == 0 && (*valuep) & 0x80000000ULL) |
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printf("WARNING: The value is not sign-extende" |
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"d. Is this what you intended?\n"); |
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} |
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} |
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|
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skip_register = name[0] == '$' || name[0] == '@'; |
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skip_numeric = name[0] == '%' || name[0] == '@'; |
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skip_symbol = name[0] == '$' || name[0] == '%'; |
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|
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/* Check for a register match: */ |
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if (!skip_register && strlen(name) >= 1) |
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cpu_register_match(m, name, writeflag, valuep, |
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&match_register); |
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|
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/* Check for a number match: */ |
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if (!skip_numeric && isdigit((int)name[0])) { |
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uint64_t x; |
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x = strtoull(name, NULL, 0); |
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if (writeflag) { |
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printf("You cannot assign like that.\n"); |
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} else |
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*valuep = x; |
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match_numeric = 1; |
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} |
275 |
|
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/* Check for a symbol match: */ |
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if (!skip_symbol) { |
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int res; |
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char *p, *sn; |
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uint64_t newaddr, ofs = 0; |
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|
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sn = malloc(strlen(name) + 1); |
283 |
if (sn == NULL) { |
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fprintf(stderr, "out of memory in debugger\n"); |
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exit(1); |
286 |
} |
287 |
strlcpy(sn, name, strlen(name)+1); |
288 |
|
289 |
/* Is there a '+' in there? Then treat that as an offset: */ |
290 |
p = strchr(sn, '+'); |
291 |
if (p != NULL) { |
292 |
*p = '\0'; |
293 |
ofs = strtoull(p+1, NULL, 0); |
294 |
} |
295 |
|
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res = get_symbol_addr(&m->symbol_context, sn, &newaddr); |
297 |
if (res) { |
298 |
if (writeflag) { |
299 |
printf("You cannot assign like that.\n"); |
300 |
} else |
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*valuep = newaddr + ofs; |
302 |
match_symbol = 1; |
303 |
} |
304 |
|
305 |
free(sn); |
306 |
} |
307 |
|
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if (match_register + match_symbol + match_numeric > 1) |
309 |
return NAME_PARSE_MULTIPLE; |
310 |
|
311 |
if (match_register) |
312 |
return NAME_PARSE_REGISTER; |
313 |
if (match_numeric) |
314 |
return NAME_PARSE_NUMBER; |
315 |
if (match_symbol) |
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return NAME_PARSE_SYMBOL; |
317 |
|
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return NAME_PARSE_NOMATCH; |
319 |
} |
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|
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|
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/* |
323 |
* show_breakpoint(): |
324 |
*/ |
325 |
static void show_breakpoint(struct machine *m, int i) |
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{ |
327 |
printf("%3i: 0x", i); |
328 |
if (m->cpus[0]->is_32bit) |
329 |
printf("%08"PRIx32, (uint32_t) m->breakpoint_addr[i]); |
330 |
else |
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printf("%016"PRIx64, (uint64_t) m->breakpoint_addr[i]); |
332 |
if (m->breakpoint_string[i] != NULL) |
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printf(" (%s)", m->breakpoint_string[i]); |
334 |
if (m->breakpoint_flags[i]) |
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printf(": flags=0x%x", m->breakpoint_flags[i]); |
336 |
printf("\n"); |
337 |
} |
338 |
|
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|
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/****************************************************************************/ |
341 |
|
342 |
|
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#include "debugger_cmds.c" |
344 |
|
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|
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/****************************************************************************/ |
347 |
|
348 |
|
349 |
/* |
350 |
* debugger_assignment(): |
351 |
* |
352 |
* cmd contains something like "pc=0x80001000", or "r31=memcpy+0x40". |
353 |
*/ |
354 |
void debugger_assignment(struct machine *m, char *cmd) |
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{ |
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char *left, *right; |
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int res_left, res_right; |
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uint64_t tmp; |
359 |
uint64_t old_pc = m->cpus[0]->pc; /* TODO: multiple cpus? */ |
360 |
|
361 |
left = malloc(MAX_CMD_BUFLEN); |
362 |
if (left == NULL) { |
363 |
fprintf(stderr, "out of memory in debugger_assignment()\n"); |
364 |
exit(1); |
365 |
} |
366 |
strlcpy(left, cmd, MAX_CMD_BUFLEN); |
367 |
right = strchr(left, '='); |
368 |
if (right == NULL) { |
369 |
fprintf(stderr, "internal error in the debugger\n"); |
370 |
exit(1); |
371 |
} |
372 |
*right = '\0'; |
373 |
|
374 |
/* Remove trailing spaces in left: */ |
375 |
while (strlen(left) >= 1 && left[strlen(left)-1] == ' ') |
376 |
left[strlen(left)-1] = '\0'; |
377 |
|
378 |
/* Remove leading spaces in right: */ |
379 |
right++; |
380 |
while (*right == ' ' && *right != '\0') |
381 |
right++; |
382 |
|
383 |
/* printf("left = '%s'\nright = '%s'\n", left, right); */ |
384 |
|
385 |
res_right = debugger_parse_name(m, right, 0, &tmp); |
386 |
switch (res_right) { |
387 |
case NAME_PARSE_NOMATCH: |
388 |
printf("No match for the right-hand side of the assignment.\n"); |
389 |
break; |
390 |
case NAME_PARSE_MULTIPLE: |
391 |
printf("Multiple matches for the right-hand side of the " |
392 |
"assignment.\n"); |
393 |
break; |
394 |
default: |
395 |
res_left = debugger_parse_name(m, left, 1, &tmp); |
396 |
switch (res_left) { |
397 |
case NAME_PARSE_NOMATCH: |
398 |
printf("No match for the left-hand side of the " |
399 |
"assignment.\n"); |
400 |
break; |
401 |
case NAME_PARSE_MULTIPLE: |
402 |
printf("Multiple matches for the left-hand side " |
403 |
"of the assignment.\n"); |
404 |
break; |
405 |
default: |
406 |
debugger_cmd_print(m, left); |
407 |
} |
408 |
} |
409 |
|
410 |
/* |
411 |
* If the PC has changed, then release any breakpoint we were |
412 |
* currently stopped at. |
413 |
* |
414 |
* TODO: multiple cpus? |
415 |
*/ |
416 |
if (old_pc != m->cpus[0]->pc) |
417 |
single_step_breakpoint = 0; |
418 |
|
419 |
free(left); |
420 |
} |
421 |
|
422 |
|
423 |
/* |
424 |
* debugger_execute_cmd(): |
425 |
*/ |
426 |
void debugger_execute_cmd(char *cmd, int cmd_len) |
427 |
{ |
428 |
int i, n, i_match, matchlen; |
429 |
|
430 |
/* |
431 |
* Is there a '=' on the command line? Then try to do an |
432 |
* assignment. (Only if there is just one word, followed |
433 |
* by the '=' sign. This makes it possible to use commands |
434 |
* such as "device add name addr=xyz".) |
435 |
*/ |
436 |
if (strchr(cmd, '=') != NULL) { |
437 |
/* Count the nr of words: */ |
438 |
int nw = 0, inword = 0; |
439 |
char *p = cmd; |
440 |
while (*p) { |
441 |
if (*p == '=') |
442 |
break; |
443 |
if (*p != ' ') { |
444 |
if (!inword) |
445 |
nw ++; |
446 |
inword = 1; |
447 |
} else |
448 |
inword = 0; |
449 |
p++; |
450 |
} |
451 |
|
452 |
if (nw == 1) { |
453 |
debugger_assignment(debugger_machine, cmd); |
454 |
return; |
455 |
} |
456 |
} |
457 |
|
458 |
i = 0; |
459 |
while (cmds[i].name != NULL) |
460 |
cmds[i++].tmp_flag = 0; |
461 |
|
462 |
/* How many chars in cmd to match against: */ |
463 |
matchlen = 0; |
464 |
while (isalpha((int)cmd[matchlen])) |
465 |
matchlen ++; |
466 |
|
467 |
/* Check for a command name match: */ |
468 |
n = i = i_match = 0; |
469 |
while (cmds[i].name != NULL) { |
470 |
if (strncasecmp(cmds[i].name, cmd, matchlen) == 0 |
471 |
&& cmds[i].f != NULL) { |
472 |
cmds[i].tmp_flag = 1; |
473 |
i_match = i; |
474 |
n++; |
475 |
} |
476 |
i++; |
477 |
} |
478 |
|
479 |
/* No match? */ |
480 |
if (n == 0) { |
481 |
printf("Unknown command '%s'. Type 'help' for help.\n", cmd); |
482 |
return; |
483 |
} |
484 |
|
485 |
/* More than one match? */ |
486 |
if (n > 1) { |
487 |
printf("Ambiguous command '%s': ", cmd); |
488 |
i = 0; |
489 |
while (cmds[i].name != NULL) { |
490 |
if (cmds[i].tmp_flag) |
491 |
printf(" %s", cmds[i].name); |
492 |
i++; |
493 |
} |
494 |
printf("\n"); |
495 |
return; |
496 |
} |
497 |
|
498 |
/* Exactly one match: */ |
499 |
if (cmds[i_match].f != NULL) { |
500 |
char *p = cmd + matchlen; |
501 |
/* Remove leading whitespace from the args... */ |
502 |
while (*p != '\0' && *p == ' ') |
503 |
p++; |
504 |
|
505 |
/* ... and run the command: */ |
506 |
cmds[i_match].f(debugger_machine, p); |
507 |
} else |
508 |
printf("FATAL ERROR: internal error in debugger.c:" |
509 |
" no handler for this command?\n"); |
510 |
} |
511 |
|
512 |
|
513 |
/* |
514 |
* debugger_readline(): |
515 |
* |
516 |
* Read a line from the terminal. |
517 |
*/ |
518 |
static char *debugger_readline(void) |
519 |
{ |
520 |
int ch, i, j, n, i_match, reallen, cmd_len, cursor_pos; |
521 |
int read_from_index = last_cmd_index; |
522 |
char *cmd = last_cmd[last_cmd_index]; |
523 |
|
524 |
cmd_len = 0; cmd[0] = '\0'; |
525 |
printf("GXemul> "); |
526 |
fflush(stdout); |
527 |
|
528 |
ch = '\0'; |
529 |
cmd_len = 0; |
530 |
cursor_pos = 0; |
531 |
|
532 |
while (ch != '\n' && !exit_debugger) { |
533 |
ch = debugger_readchar(); |
534 |
|
535 |
if ((ch == '\b' || ch == 127) && cursor_pos > 0) { |
536 |
/* Backspace. */ |
537 |
cursor_pos --; |
538 |
cmd_len --; |
539 |
memmove(cmd + cursor_pos, cmd + cursor_pos + 1, |
540 |
cmd_len); |
541 |
cmd[cmd_len] = '\0'; |
542 |
printf("\b"); |
543 |
for (i=cursor_pos; i<cmd_len; i++) |
544 |
printf("%c", cmd[i]); |
545 |
printf(" \b"); |
546 |
for (i=cursor_pos; i<cmd_len; i++) |
547 |
printf("\b"); |
548 |
} else if (ch == 4 && cmd_len > 0 && cursor_pos < cmd_len) { |
549 |
/* CTRL-D: Delete. */ |
550 |
cmd_len --; |
551 |
memmove(cmd + cursor_pos, cmd + cursor_pos + 1, |
552 |
cmd_len); |
553 |
cmd[cmd_len] = '\0'; |
554 |
for (i=cursor_pos; i<cmd_len; i++) |
555 |
printf("%c", cmd[i]); |
556 |
printf(" \b"); |
557 |
for (i=cursor_pos; i<cmd_len; i++) |
558 |
printf("\b"); |
559 |
} else if (ch == 1) { |
560 |
/* CTRL-A: Start of line. */ |
561 |
while (cursor_pos > 0) { |
562 |
cursor_pos --; |
563 |
printf("\b"); |
564 |
} |
565 |
} else if (ch == 2) { |
566 |
/* CTRL-B: Backwards one character. */ |
567 |
if (cursor_pos > 0) { |
568 |
printf("\b"); |
569 |
cursor_pos --; |
570 |
} |
571 |
} else if (ch == 5) { |
572 |
/* CTRL-E: End of line. */ |
573 |
while (cursor_pos < cmd_len) { |
574 |
printf("%c", cmd[cursor_pos]); |
575 |
cursor_pos ++; |
576 |
} |
577 |
} else if (ch == 6) { |
578 |
/* CTRL-F: Forward one character. */ |
579 |
if (cursor_pos < cmd_len) { |
580 |
printf("%c", |
581 |
cmd[cursor_pos]); |
582 |
cursor_pos ++; |
583 |
} |
584 |
} else if (ch == 11) { |
585 |
/* CTRL-K: Kill to end of line. */ |
586 |
for (i=0; i<MAX_CMD_BUFLEN; i++) |
587 |
console_makeavail(MAIN_CONSOLE, 4); /* :-) */ |
588 |
} else if (ch == 14 || ch == 16) { |
589 |
/* CTRL-P: Previous line in the command history, |
590 |
CTRL-N: next line */ |
591 |
do { |
592 |
if (ch == 14 && |
593 |
read_from_index == last_cmd_index) |
594 |
break; |
595 |
if (ch == 16) |
596 |
i = read_from_index - 1; |
597 |
else |
598 |
i = read_from_index + 1; |
599 |
|
600 |
if (i < 0) |
601 |
i = N_PREVIOUS_CMDS - 1; |
602 |
if (i >= N_PREVIOUS_CMDS) |
603 |
i = 0; |
604 |
|
605 |
/* Special case: pressing 'down' |
606 |
to reach last_cmd_index: */ |
607 |
if (i == last_cmd_index) { |
608 |
read_from_index = i; |
609 |
for (i=cursor_pos; i<cmd_len; |
610 |
i++) |
611 |
printf(" "); |
612 |
for (i=cmd_len-1; i>=0; i--) |
613 |
printf("\b \b"); |
614 |
cmd[0] = '\0'; |
615 |
cmd_len = cursor_pos = 0; |
616 |
} else if (last_cmd[i][0] != '\0') { |
617 |
/* Copy from old line: */ |
618 |
read_from_index = i; |
619 |
for (i=cursor_pos; i<cmd_len; |
620 |
i++) |
621 |
printf(" "); |
622 |
for (i=cmd_len-1; i>=0; i--) |
623 |
printf("\b \b"); |
624 |
strlcpy(cmd, |
625 |
last_cmd[read_from_index], |
626 |
MAX_CMD_BUFLEN); |
627 |
cmd_len = strlen(cmd); |
628 |
printf("%s", cmd); |
629 |
cursor_pos = cmd_len; |
630 |
} |
631 |
} while (0); |
632 |
} else if (ch >= ' ' && cmd_len < MAX_CMD_BUFLEN-1) { |
633 |
/* Visible character: */ |
634 |
memmove(cmd + cursor_pos + 1, cmd + cursor_pos, |
635 |
cmd_len - cursor_pos); |
636 |
cmd[cursor_pos] = ch; |
637 |
cmd_len ++; |
638 |
cursor_pos ++; |
639 |
cmd[cmd_len] = '\0'; |
640 |
printf("%c", ch); |
641 |
for (i=cursor_pos; i<cmd_len; i++) |
642 |
printf("%c", cmd[i]); |
643 |
for (i=cursor_pos; i<cmd_len; i++) |
644 |
printf("\b"); |
645 |
} else if (ch == '\r' || ch == '\n') { |
646 |
ch = '\n'; |
647 |
printf("\n"); |
648 |
} else if (ch == '\t') { |
649 |
/* Super-simple tab-completion: */ |
650 |
i = 0; |
651 |
while (cmds[i].name != NULL) |
652 |
cmds[i++].tmp_flag = 0; |
653 |
|
654 |
/* Check for a (partial) command match: */ |
655 |
n = i = i_match = 0; |
656 |
while (cmds[i].name != NULL) { |
657 |
if (strncasecmp(cmds[i].name, cmd, |
658 |
cmd_len) == 0) { |
659 |
cmds[i].tmp_flag = 1; |
660 |
i_match = i; |
661 |
n++; |
662 |
} |
663 |
i++; |
664 |
} |
665 |
|
666 |
switch (n) { |
667 |
case 0: /* Beep. */ |
668 |
printf("\a"); |
669 |
break; |
670 |
case 1: /* Add the rest of the command: */ |
671 |
reallen = strlen(cmds[i_match].name); |
672 |
for (i=cmd_len; i<reallen; i++) |
673 |
console_makeavail(MAIN_CONSOLE, |
674 |
cmds[i_match].name[i]); |
675 |
/* ... and a space, if the command takes |
676 |
any arguments: */ |
677 |
if (cmds[i_match].args != NULL && |
678 |
cmds[i_match].args[0] != '\0') |
679 |
console_makeavail(MAIN_CONSOLE, ' '); |
680 |
break; |
681 |
default: |
682 |
/* Show all possible commands: */ |
683 |
printf("\a\n"); /* Beep. :-) */ |
684 |
i = 0; /* i = cmds index */ |
685 |
j = 0; /* j = # of cmds printed */ |
686 |
while (cmds[i].name != NULL) { |
687 |
if (cmds[i].tmp_flag) { |
688 |
size_t q; |
689 |
if (j == 0) |
690 |
printf(" "); |
691 |
printf("%s", |
692 |
cmds[i].name); |
693 |
j++; |
694 |
if (j != 6) |
695 |
for (q=0; q<13-strlen( |
696 |
cmds[i].name); q++) |
697 |
printf(" "); |
698 |
if (j == 6) { |
699 |
printf("\n"); |
700 |
j = 0; |
701 |
} |
702 |
} |
703 |
i++; |
704 |
} |
705 |
if (j != 0) |
706 |
printf("\n"); |
707 |
printf("GXemul> "); |
708 |
for (i=0; i<cmd_len; i++) |
709 |
printf("%c", cmd[i]); |
710 |
} |
711 |
} else if (ch == 27) { |
712 |
/* Escape codes: (cursor keys etc) */ |
713 |
while ((ch = console_readchar(MAIN_CONSOLE)) < 0) |
714 |
usleep(1); |
715 |
if (ch == '[' || ch == 'O') { |
716 |
while ((ch = console_readchar(MAIN_CONSOLE)) |
717 |
< 0) |
718 |
usleep(1); |
719 |
switch (ch) { |
720 |
case '2': /* 2~ = ins */ |
721 |
case '5': /* 5~ = pgup */ |
722 |
case '6': /* 6~ = pgdn */ |
723 |
/* TODO: Ugly hack, but might work. */ |
724 |
while ((ch = console_readchar( |
725 |
MAIN_CONSOLE)) < 0) |
726 |
usleep(1); |
727 |
/* Do nothing for these keys. */ |
728 |
break; |
729 |
case '3': /* 3~ = delete */ |
730 |
/* TODO: Ugly hack, but might work. */ |
731 |
while ((ch = console_readchar( |
732 |
MAIN_CONSOLE)) < 0) |
733 |
usleep(1); |
734 |
console_makeavail(MAIN_CONSOLE, '\b'); |
735 |
break; |
736 |
case 'A': /* Up. */ |
737 |
/* Up cursor ==> CTRL-P */ |
738 |
console_makeavail(MAIN_CONSOLE, 16); |
739 |
break; |
740 |
case 'B': /* Down. */ |
741 |
/* Down cursor ==> CTRL-N */ |
742 |
console_makeavail(MAIN_CONSOLE, 14); |
743 |
break; |
744 |
case 'C': |
745 |
/* Right cursor ==> CTRL-F */ |
746 |
console_makeavail(MAIN_CONSOLE, 6); |
747 |
break; |
748 |
case 'D': /* Left */ |
749 |
/* Left cursor ==> CTRL-B */ |
750 |
console_makeavail(MAIN_CONSOLE, 2); |
751 |
break; |
752 |
case 'F': |
753 |
/* End ==> CTRL-E */ |
754 |
console_makeavail(MAIN_CONSOLE, 5); |
755 |
break; |
756 |
case 'H': |
757 |
/* Home ==> CTRL-A */ |
758 |
console_makeavail(MAIN_CONSOLE, 1); |
759 |
break; |
760 |
} |
761 |
} |
762 |
} |
763 |
|
764 |
fflush(stdout); |
765 |
} |
766 |
|
767 |
if (exit_debugger) |
768 |
cmd[0] = '\0'; |
769 |
|
770 |
return cmd; |
771 |
} |
772 |
|
773 |
|
774 |
/* |
775 |
* debugger(): |
776 |
* |
777 |
* This is a loop, which reads a command from the terminal, and executes it. |
778 |
*/ |
779 |
void debugger(void) |
780 |
{ |
781 |
int i, cmd_len; |
782 |
char *cmd; |
783 |
|
784 |
if (debugger_n_steps_left_before_interaction > 0) { |
785 |
debugger_n_steps_left_before_interaction --; |
786 |
return; |
787 |
} |
788 |
|
789 |
/* |
790 |
* Clear all dyntrans translations, because otherwise things would |
791 |
* become to complex to keep in sync. |
792 |
*/ |
793 |
/* TODO: In all machines */ |
794 |
for (i=0; i<debugger_machine->ncpus; i++) |
795 |
if (debugger_machine->cpus[i]->translation_cache != NULL) { |
796 |
cpu_create_or_reset_tc(debugger_machine->cpus[i]); |
797 |
debugger_machine->cpus[i]-> |
798 |
invalidate_translation_caches( |
799 |
debugger_machine->cpus[i], 0, INVALIDATE_ALL); |
800 |
} |
801 |
|
802 |
/* |
803 |
* Ugly GDB hack: After single stepping, we need to send back |
804 |
* status to GDB: |
805 |
*/ |
806 |
if (exit_debugger == -1) { |
807 |
int i, j; |
808 |
for (i=0; i<debugger_n_emuls; i++) { |
809 |
struct emul *e = debugger_emuls[i]; |
810 |
if (e == NULL) |
811 |
continue; |
812 |
|
813 |
for (j=0; j<e->n_machines; j++) { |
814 |
if (e->machines[j]->gdb.port > 0) |
815 |
debugger_gdb_after_singlestep( |
816 |
e->machines[j]); |
817 |
} |
818 |
} |
819 |
} |
820 |
|
821 |
|
822 |
exit_debugger = 0; |
823 |
|
824 |
while (!exit_debugger) { |
825 |
/* Read a line from the terminal: */ |
826 |
cmd = debugger_readline(); |
827 |
|
828 |
/* Special hack for the "step" _GDB_ command: */ |
829 |
if (exit_debugger == -1) |
830 |
return; |
831 |
|
832 |
cmd_len = strlen(cmd); |
833 |
|
834 |
/* Remove spaces: */ |
835 |
while (cmd_len > 0 && cmd[0]==' ') |
836 |
memmove(cmd, cmd+1, cmd_len --); |
837 |
while (cmd_len > 0 && cmd[cmd_len-1] == ' ') |
838 |
cmd[(cmd_len--)-1] = '\0'; |
839 |
|
840 |
/* No command? Then try reading another line. */ |
841 |
if (cmd_len == 0) { |
842 |
/* Special case for repeated commands: */ |
843 |
if (repeat_cmd[0] != '\0') |
844 |
strlcpy(cmd, repeat_cmd, MAX_CMD_BUFLEN); |
845 |
else |
846 |
continue; |
847 |
} else { |
848 |
last_cmd_index ++; |
849 |
if (last_cmd_index >= N_PREVIOUS_CMDS) |
850 |
last_cmd_index = 0; |
851 |
|
852 |
repeat_cmd[0] = '\0'; |
853 |
} |
854 |
|
855 |
debugger_execute_cmd(cmd, cmd_len); |
856 |
|
857 |
/* Special hack for the "step" command: */ |
858 |
if (exit_debugger == -1) |
859 |
return; |
860 |
} |
861 |
|
862 |
gettimeofday(&debugger_machine->starttime, NULL); |
863 |
debugger_machine->ncycles_since_gettimeofday = 0; |
864 |
|
865 |
single_step = NOT_SINGLE_STEPPING; |
866 |
debugger_machine->instruction_trace = old_instruction_trace; |
867 |
debugger_machine->show_trace_tree = old_show_trace_tree; |
868 |
quiet_mode = old_quiet_mode; |
869 |
} |
870 |
|
871 |
|
872 |
/* |
873 |
* debugger_reset(): |
874 |
* |
875 |
* This function should be called before calling debugger(), when it is |
876 |
* absolutely necessary that debugger() is interactive. Otherwise, it might |
877 |
* return without doing anything, such as when single-stepping multiple |
878 |
* instructions at a time. |
879 |
*/ |
880 |
void debugger_reset(void) |
881 |
{ |
882 |
debugger_n_steps_left_before_interaction = 0; |
883 |
} |
884 |
|
885 |
|
886 |
/* |
887 |
* debugger_init(): |
888 |
* |
889 |
* Must be called before any other debugger function is used. |
890 |
*/ |
891 |
void debugger_init(struct emul **emuls, int n_emuls) |
892 |
{ |
893 |
int i, j; |
894 |
|
895 |
debugger_n_emuls = n_emuls; |
896 |
debugger_emuls = emuls; |
897 |
|
898 |
if (n_emuls < 1) { |
899 |
fprintf(stderr, "\nERROR: No emuls (?)\n"); |
900 |
exit(1); |
901 |
} |
902 |
|
903 |
debugger_emul = emuls[0]; |
904 |
if (emuls[0]->n_machines < 1) { |
905 |
fprintf(stderr, "\nERROR: No machines in emuls[0], " |
906 |
"cannot handle this situation yet.\n\n"); |
907 |
exit(1); |
908 |
} |
909 |
|
910 |
for (i=0; i<n_emuls; i++) |
911 |
for (j=0; j<emuls[i]->n_machines; j++) |
912 |
debugger_gdb_init(emuls[i]->machines[j]); |
913 |
|
914 |
debugger_machine = emuls[0]->machines[0]; |
915 |
|
916 |
for (i=0; i<N_PREVIOUS_CMDS; i++) { |
917 |
last_cmd[i] = malloc(MAX_CMD_BUFLEN); |
918 |
if (last_cmd[i] == NULL) { |
919 |
fprintf(stderr, "debugger_init(): out of memory\n"); |
920 |
exit(1); |
921 |
} |
922 |
last_cmd[i][0] = '\0'; |
923 |
} |
924 |
|
925 |
last_cmd_index = 0; |
926 |
repeat_cmd[0] = '\0'; |
927 |
} |
928 |
|