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/* |
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* Copyright (C) 2003-2005 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 1.103 2005/05/13 14:26:29 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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* 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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* |
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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> |
51 |
#include <signal.h> |
52 |
#include <stdio.h> |
53 |
#include <stdlib.h> |
54 |
#include <string.h> |
55 |
#include <unistd.h> |
56 |
|
57 |
#include "bintrans.h" |
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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 "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" |
68 |
#include "x11.h" |
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|
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|
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extern int extra_argc; |
72 |
extern char **extra_argv; |
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|
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extern int quiet_mode; |
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|
76 |
|
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/* |
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* Global debugger variables: |
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*/ |
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|
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volatile int single_step = 0; |
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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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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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|
89 |
|
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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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|
96 |
static int debugger_n_emuls; |
97 |
static struct emul **debugger_emuls; |
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static struct emul *debugger_emul; |
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static struct machine *debugger_machine; |
100 |
|
101 |
static int exit_debugger; |
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static int n_steps_left_before_interaction = 0; |
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|
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#define MAX_CMD_LEN 70 |
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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_LEN + 1]; |
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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_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) { |
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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_LEN+1; i++) |
132 |
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 = 1; |
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|
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/* Discard any chars in the input queue: */ |
142 |
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 dependant) |
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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 |
186 |
#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); |
198 |
} |
199 |
|
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/* Warn about non-signextended values: */ |
201 |
if (writeflag && |
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((*valuep) >> 32) == 0 && (*valuep) & 0x80000000ULL) |
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printf("WARNING: The value is not sign-extended. " |
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"Is this what you intended?\n"); |
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|
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skip_register = name[0] == '$' || name[0] == '@'; |
207 |
skip_numeric = name[0] == '%' || name[0] == '@'; |
208 |
skip_symbol = name[0] == '$' || name[0] == '%'; |
209 |
|
210 |
/* Check for a register match: */ |
211 |
if (!skip_register && strlen(name) >= 1) |
212 |
cpu_register_match(m, name, writeflag, valuep, |
213 |
&match_register); |
214 |
|
215 |
/* Check for a number match: */ |
216 |
if (!skip_numeric && isdigit((int)name[0])) { |
217 |
uint64_t x; |
218 |
x = strtoull(name, NULL, 0); |
219 |
if (writeflag) { |
220 |
printf("You cannot assign like that.\n"); |
221 |
} else |
222 |
*valuep = x; |
223 |
match_numeric = 1; |
224 |
} |
225 |
|
226 |
/* Check for a symbol match: */ |
227 |
if (!skip_symbol) { |
228 |
int res; |
229 |
char *p, *sn; |
230 |
uint64_t newaddr, ofs = 0; |
231 |
|
232 |
sn = malloc(strlen(name) + 1); |
233 |
if (sn == NULL) { |
234 |
fprintf(stderr, "out of memory in debugger\n"); |
235 |
exit(1); |
236 |
} |
237 |
strcpy(sn, name); |
238 |
|
239 |
/* Is there a '+' in there? Then treat that as an offset: */ |
240 |
p = strchr(sn, '+'); |
241 |
if (p != NULL) { |
242 |
*p = '\0'; |
243 |
ofs = strtoull(p+1, NULL, 0); |
244 |
} |
245 |
|
246 |
res = get_symbol_addr(&m->symbol_context, sn, &newaddr); |
247 |
if (res) { |
248 |
if (writeflag) { |
249 |
printf("You cannot assign like that.\n"); |
250 |
} else |
251 |
*valuep = newaddr + ofs; |
252 |
match_symbol = 1; |
253 |
} |
254 |
|
255 |
free(sn); |
256 |
} |
257 |
|
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if (match_register + match_symbol + match_numeric > 1) |
259 |
return NAME_PARSE_MULTIPLE; |
260 |
|
261 |
if (match_register) |
262 |
return NAME_PARSE_REGISTER; |
263 |
if (match_numeric) |
264 |
return NAME_PARSE_NUMBER; |
265 |
if (match_symbol) |
266 |
return NAME_PARSE_SYMBOL; |
267 |
|
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return NAME_PARSE_NOMATCH; |
269 |
} |
270 |
|
271 |
|
272 |
/* |
273 |
* show_breakpoint(): |
274 |
*/ |
275 |
static void show_breakpoint(struct machine *m, int i) |
276 |
{ |
277 |
printf("%3i: 0x%016llx", i, |
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(long long)m->breakpoint_addr[i]); |
279 |
if (m->breakpoint_string[i] != NULL) |
280 |
printf(" (%s)", m->breakpoint_string[i]); |
281 |
if (m->breakpoint_flags[i]) |
282 |
printf(": flags=0x%x", m->breakpoint_flags[i]); |
283 |
printf("\n"); |
284 |
} |
285 |
|
286 |
|
287 |
/****************************************************************************/ |
288 |
|
289 |
|
290 |
/* |
291 |
* debugger_cmd_breakpoint(): |
292 |
* |
293 |
* TODO: automagic "expansion" for the subcommand names (s => show). |
294 |
*/ |
295 |
static void debugger_cmd_breakpoint(struct machine *m, char *cmd_line) |
296 |
{ |
297 |
int i, res; |
298 |
|
299 |
while (cmd_line[0] != '\0' && cmd_line[0] == ' ') |
300 |
cmd_line ++; |
301 |
|
302 |
if (cmd_line[0] == '\0') { |
303 |
printf("syntax: breakpoint subcmd [args...]\n"); |
304 |
printf("Available subcmds (and args) are:\n"); |
305 |
printf(" add addr add a breakpoint for address addr\n"); |
306 |
printf(" delete x delete breakpoint nr x\n"); |
307 |
printf(" show show current breakpoints\n"); |
308 |
return; |
309 |
} |
310 |
|
311 |
if (strcmp(cmd_line, "show") == 0) { |
312 |
if (m->n_breakpoints == 0) |
313 |
printf("No breakpoints set.\n"); |
314 |
for (i=0; i<m->n_breakpoints; i++) |
315 |
show_breakpoint(m, i); |
316 |
return; |
317 |
} |
318 |
|
319 |
if (strncmp(cmd_line, "delete ", 7) == 0) { |
320 |
int x = atoi(cmd_line + 7); |
321 |
|
322 |
if (m->n_breakpoints == 0) { |
323 |
printf("No breakpoints set.\n"); |
324 |
return; |
325 |
} |
326 |
if (x < 0 || x >= m->n_breakpoints) { |
327 |
printf("Invalid breakpoint nr %i. Use 'breakpoint " |
328 |
"show' to see the current breakpoints.\n", x); |
329 |
return; |
330 |
} |
331 |
|
332 |
free(m->breakpoint_string[x]); |
333 |
|
334 |
for (i=x; i<m->n_breakpoints-1; i++) { |
335 |
m->breakpoint_addr[i] = m->breakpoint_addr[i+1]; |
336 |
m->breakpoint_string[i] = m->breakpoint_string[i+1]; |
337 |
m->breakpoint_flags[i] = m->breakpoint_flags[i+1]; |
338 |
} |
339 |
m->n_breakpoints --; |
340 |
return; |
341 |
} |
342 |
|
343 |
if (strncmp(cmd_line, "add ", 4) == 0) { |
344 |
uint64_t tmp; |
345 |
|
346 |
if (m->n_breakpoints >= MAX_BREAKPOINTS) { |
347 |
printf("Too many breakpoints. (You need to recompile" |
348 |
" gxemul to increase this. Max = %i.)\n", |
349 |
MAX_BREAKPOINTS); |
350 |
return; |
351 |
} |
352 |
|
353 |
i = m->n_breakpoints; |
354 |
|
355 |
res = debugger_parse_name(m, cmd_line + 4, 0, &tmp); |
356 |
if (!res) { |
357 |
printf("Couldn't parse '%s'\n", cmd_line + 4); |
358 |
return; |
359 |
} |
360 |
|
361 |
m->breakpoint_string[i] = malloc(strlen(cmd_line+4) + 1); |
362 |
if (m->breakpoint_string[i] == NULL) { |
363 |
printf("out of memory in debugger_cmd_breakpoint()\n"); |
364 |
exit(1); |
365 |
} |
366 |
strcpy(m->breakpoint_string[i], cmd_line+4); |
367 |
m->breakpoint_addr[i] = tmp; |
368 |
m->breakpoint_flags[i] = 0; |
369 |
|
370 |
m->n_breakpoints ++; |
371 |
show_breakpoint(m, i); |
372 |
return; |
373 |
} |
374 |
|
375 |
printf("Unknown breakpoint subcommand.\n"); |
376 |
} |
377 |
|
378 |
|
379 |
/* |
380 |
* debugger_cmd_bintrans(): |
381 |
*/ |
382 |
static void debugger_cmd_bintrans(struct machine *m, char *cmd_line) |
383 |
{ |
384 |
int i; |
385 |
|
386 |
if (*cmd_line == '\0') |
387 |
goto printstate; |
388 |
|
389 |
if (!m->bintrans_enabled_from_start) { |
390 |
printf("You must have enabled bintrans from the start of the " |
391 |
"simulation.\nIt is not possible to turn on afterwards.\n"); |
392 |
return; |
393 |
} |
394 |
|
395 |
while (*cmd_line == ' ') |
396 |
cmd_line++; |
397 |
|
398 |
/* Note: len 3 and 4, to include the NUL char. */ |
399 |
if (strncasecmp(cmd_line, "on", 3) == 0) { |
400 |
m->bintrans_enable = 1; |
401 |
for (i=0; i<m->ncpus; i++) |
402 |
bintrans_restart(m->cpus[i]); |
403 |
} else if (strncasecmp(cmd_line, "off", 4) == 0) |
404 |
m->bintrans_enable = 0; |
405 |
else |
406 |
printf("syntax: bintrans [on|off]\n"); |
407 |
|
408 |
printstate: |
409 |
printf("bintrans is now %s%s\n", |
410 |
m->bintrans_enable? "ENABLED" : "disabled", |
411 |
m->old_bintrans_enable? " (using the OLD bintrans system)" : ""); |
412 |
} |
413 |
|
414 |
|
415 |
/* |
416 |
* debugger_cmd_continue(): |
417 |
*/ |
418 |
static void debugger_cmd_continue(struct machine *m, char *cmd_line) |
419 |
{ |
420 |
if (*cmd_line) { |
421 |
printf("syntax: continue\n"); |
422 |
return; |
423 |
} |
424 |
|
425 |
exit_debugger = 1; |
426 |
} |
427 |
|
428 |
|
429 |
/* |
430 |
* debugger_cmd_device(): |
431 |
*/ |
432 |
static void debugger_cmd_device(struct machine *m, char *cmd_line) |
433 |
{ |
434 |
int i, j; |
435 |
struct memory *mem; |
436 |
struct cpu *c; |
437 |
|
438 |
if (cmd_line[0] == '\0') |
439 |
goto return_help; |
440 |
|
441 |
if (m->cpus == NULL) { |
442 |
printf("No cpus (?)\n"); |
443 |
return; |
444 |
} |
445 |
c = m->cpus[m->bootstrap_cpu]; |
446 |
if (c == NULL) { |
447 |
printf("m->cpus[m->bootstrap_cpu] = NULL\n"); |
448 |
return; |
449 |
} |
450 |
mem = m->cpus[m->bootstrap_cpu]->mem; |
451 |
|
452 |
if (m->cpus == NULL) { |
453 |
printf("No cpus (?)\n"); |
454 |
return; |
455 |
} |
456 |
c = m->cpus[m->bootstrap_cpu]; |
457 |
if (c == NULL) { |
458 |
printf("m->cpus[m->bootstrap_cpu] = NULL\n"); |
459 |
return; |
460 |
} |
461 |
mem = m->cpus[m->bootstrap_cpu]->mem; |
462 |
|
463 |
if (strcmp(cmd_line, "all") == 0) { |
464 |
device_dumplist(); |
465 |
} else if (strncmp(cmd_line, "add ", 4) == 0) { |
466 |
device_add(m, cmd_line+4); |
467 |
} else if (strncmp(cmd_line, "remove ", 7) == 0) { |
468 |
i = atoi(cmd_line + 7); |
469 |
if (i==0 && cmd_line[7]!='0') { |
470 |
printf("Weird device number. Use 'device list'.\n"); |
471 |
} else |
472 |
memory_device_remove(m->memory, i); |
473 |
} else if (strncmp(cmd_line, "state ", 6) == 0) { |
474 |
i = atoi(cmd_line + 6); |
475 |
if (i < 0 || i >= mem->n_mmapped_devices) { |
476 |
printf("No devices with that id.\n"); |
477 |
return; |
478 |
} |
479 |
|
480 |
if (mem->dev_f_state[i] == NULL) { |
481 |
printf("No state function has been implemented yet " |
482 |
"for that device type.\n"); |
483 |
return; |
484 |
} |
485 |
|
486 |
for (j=0; ; j++) { |
487 |
int type; |
488 |
char *name; |
489 |
void *data; |
490 |
size_t len; |
491 |
int res = mem->dev_f_state[i](c, mem, |
492 |
mem->dev_extra[i], 0, j, &type, &name, &data, &len); |
493 |
if (!res) |
494 |
break; |
495 |
printf("%2i:%30s = (", j, name); |
496 |
switch (type) { |
497 |
case DEVICE_STATE_TYPE_INT: |
498 |
printf("int) %i", *((int *)data)); |
499 |
break; |
500 |
default: |
501 |
printf("unknown)"); |
502 |
} |
503 |
printf("\n"); |
504 |
} |
505 |
} else if (strcmp(cmd_line, "list") == 0) { |
506 |
if (mem->n_mmapped_devices == 0) |
507 |
printf("No memory-mapped devices in this machine.\n"); |
508 |
|
509 |
for (i=0; i<mem->n_mmapped_devices; i++) { |
510 |
printf("%2i: %25s @ 0x%011llx, len = 0x%llx", |
511 |
i, mem->dev_name[i], |
512 |
(long long)mem->dev_baseaddr[i], |
513 |
(long long)mem->dev_length[i]); |
514 |
if (mem->dev_flags[i]) { |
515 |
printf(" ("); |
516 |
if (mem->dev_flags[i] & MEM_BINTRANS_OK) |
517 |
printf("BINTRANS R"); |
518 |
if (mem->dev_flags[i] & MEM_BINTRANS_WRITE_OK) |
519 |
printf("+W"); |
520 |
printf(")"); |
521 |
} |
522 |
printf("\n"); |
523 |
} |
524 |
} else |
525 |
goto return_help; |
526 |
|
527 |
return; |
528 |
|
529 |
return_help: |
530 |
printf("syntax: devices cmd [...]\n"); |
531 |
printf("Available cmds are:\n"); |
532 |
printf(" add name_and_params add a device to the current " |
533 |
"machine\n"); |
534 |
printf(" all list all registered devices\n"); |
535 |
printf(" list list memory-mapped devices in the" |
536 |
" current machine\n"); |
537 |
printf(" remove x remove device nr x from the " |
538 |
"current machine\n"); |
539 |
printf(" state x show state of device nr x in" |
540 |
" the current machine\n"); |
541 |
} |
542 |
|
543 |
|
544 |
/* |
545 |
* debugger_cmd_dump(): |
546 |
* |
547 |
* Dump emulated memory in hex and ASCII. |
548 |
* |
549 |
* syntax: dump [addr [endaddr]] |
550 |
*/ |
551 |
static void debugger_cmd_dump(struct machine *m, char *cmd_line) |
552 |
{ |
553 |
uint64_t addr, addr_start, addr_end; |
554 |
struct cpu *c; |
555 |
struct memory *mem; |
556 |
char *p = NULL; |
557 |
int x, r; |
558 |
|
559 |
if (cmd_line[0] != '\0') { |
560 |
uint64_t tmp; |
561 |
char *tmps = strdup(cmd_line); |
562 |
|
563 |
/* addr: */ |
564 |
p = strchr(tmps, ' '); |
565 |
if (p != NULL) |
566 |
*p = '\0'; |
567 |
r = debugger_parse_name(m, tmps, 0, &tmp); |
568 |
free(tmps); |
569 |
|
570 |
if (r == NAME_PARSE_NOMATCH || r == NAME_PARSE_MULTIPLE) { |
571 |
printf("Unparsable address: %s\n", cmd_line); |
572 |
return; |
573 |
} else { |
574 |
last_dump_addr = tmp; |
575 |
} |
576 |
|
577 |
p = strchr(cmd_line, ' '); |
578 |
} |
579 |
|
580 |
addr_start = last_dump_addr; |
581 |
|
582 |
if (addr_start == MAGIC_UNTOUCHED) { |
583 |
uint64_t tmp; |
584 |
int match_register = 0; |
585 |
cpu_register_match(m, "pc", 0, &tmp, &match_register); |
586 |
if (match_register) { |
587 |
addr_start = tmp; |
588 |
} else { |
589 |
printf("No starting address.\n"); |
590 |
return; |
591 |
} |
592 |
} |
593 |
|
594 |
addr_end = addr_start + 16 * 16; |
595 |
|
596 |
/* endaddr: */ |
597 |
if (p != NULL) { |
598 |
while (*p == ' ' && *p) |
599 |
p++; |
600 |
r = debugger_parse_name(m, p, 0, &addr_end); |
601 |
if (r == NAME_PARSE_NOMATCH || r == NAME_PARSE_MULTIPLE) { |
602 |
printf("Unparsable address: %s\n", cmd_line); |
603 |
return; |
604 |
} |
605 |
} |
606 |
|
607 |
if (m->cpus == NULL) { |
608 |
printf("No cpus (?)\n"); |
609 |
return; |
610 |
} |
611 |
c = m->cpus[m->bootstrap_cpu]; |
612 |
if (c == NULL) { |
613 |
printf("m->cpus[m->bootstrap_cpu] = NULL\n"); |
614 |
return; |
615 |
} |
616 |
mem = m->cpus[m->bootstrap_cpu]->mem; |
617 |
|
618 |
addr = addr_start & ~0xf; |
619 |
|
620 |
ctrl_c = 0; |
621 |
|
622 |
while (addr < addr_end) { |
623 |
unsigned char buf[16]; |
624 |
memset(buf, 0, sizeof(buf)); |
625 |
r = c->memory_rw(c, mem, addr, &buf[0], sizeof(buf), |
626 |
MEM_READ, CACHE_NONE | NO_EXCEPTIONS); |
627 |
|
628 |
printf("0x%016llx ", (long long)addr); |
629 |
|
630 |
if (r == MEMORY_ACCESS_FAILED) |
631 |
printf("(memory access failed)\n"); |
632 |
else { |
633 |
for (x=0; x<16; x++) { |
634 |
if (addr + x >= addr_start && |
635 |
addr + x < addr_end) |
636 |
printf("%02x%s", buf[x], |
637 |
(x&3)==3? " " : ""); |
638 |
else |
639 |
printf(" %s", (x&3)==3? " " : ""); |
640 |
} |
641 |
printf(" "); |
642 |
for (x=0; x<16; x++) { |
643 |
if (addr + x >= addr_start && |
644 |
addr + x < addr_end) |
645 |
printf("%c", (buf[x]>=' ' && |
646 |
buf[x]<127)? buf[x] : '.'); |
647 |
else |
648 |
printf(" "); |
649 |
} |
650 |
printf("\n"); |
651 |
} |
652 |
|
653 |
if (ctrl_c) |
654 |
return; |
655 |
|
656 |
addr += sizeof(buf); |
657 |
} |
658 |
|
659 |
last_dump_addr = addr_end; |
660 |
|
661 |
strcpy(repeat_cmd, "dump"); |
662 |
} |
663 |
|
664 |
|
665 |
/* |
666 |
* debugger_cmd_emuls(): |
667 |
* |
668 |
* Dump info about all current emuls. |
669 |
*/ |
670 |
static void debugger_cmd_emuls(struct machine *m, char *cmd_line) |
671 |
{ |
672 |
int i, iadd = 4; |
673 |
|
674 |
if (*cmd_line) { |
675 |
printf("syntax: emuls\n"); |
676 |
return; |
677 |
} |
678 |
|
679 |
for (i=0; i<debugger_n_emuls; i++) { |
680 |
struct emul *e = debugger_emuls[i]; |
681 |
|
682 |
if (e == NULL) |
683 |
continue; |
684 |
|
685 |
debug("emulation %i: \"%s\"\n", i, |
686 |
e->name == NULL? "(no name)" : e->name); |
687 |
debug_indentation(iadd); |
688 |
|
689 |
emul_dumpinfo(e); |
690 |
|
691 |
debug_indentation(-iadd); |
692 |
} |
693 |
} |
694 |
|
695 |
|
696 |
/* |
697 |
* debugger_cmd_focus(): |
698 |
* |
699 |
* Changes focus to specific machine (in a specific emulation). |
700 |
*/ |
701 |
static void debugger_cmd_focus(struct machine *m, char *cmd_line) |
702 |
{ |
703 |
int x = -1, y = -1; |
704 |
char *p; |
705 |
|
706 |
if (!cmd_line[0]) { |
707 |
printf("syntax: focus x[,y]\n"); |
708 |
printf("where x and y are integers as reported by the" |
709 |
" 'emuls' command\n"); |
710 |
goto print_current_focus_and_return; |
711 |
} |
712 |
|
713 |
x = atoi(cmd_line); |
714 |
p = strchr(cmd_line, ','); |
715 |
if (p == cmd_line) { |
716 |
printf("No machine number specified?\n"); |
717 |
printf("syntax: focus x[,y]\n"); |
718 |
return; |
719 |
} |
720 |
|
721 |
if (p != NULL) |
722 |
y = atoi(p + 1); |
723 |
|
724 |
if (y != -1) { |
725 |
/* Change emul: */ |
726 |
if (y < 0 || y >= debugger_n_emuls) { |
727 |
printf("Invalid emul number: %i\n", y); |
728 |
return; |
729 |
} |
730 |
|
731 |
debugger_emul = debugger_emuls[y]; |
732 |
|
733 |
/* This is just in case the machine change below fails... */ |
734 |
debugger_machine = debugger_emul->machines[0]; |
735 |
} |
736 |
|
737 |
/* Change machine: */ |
738 |
if (x < 0 || x >= debugger_emul->n_machines) { |
739 |
printf("Invalid machine number: %i\n", x); |
740 |
return; |
741 |
} |
742 |
|
743 |
debugger_machine = debugger_emul->machines[x]; |
744 |
|
745 |
print_current_focus_and_return: |
746 |
printf("current emul: \"%s\"\n", debugger_emul->name == NULL? |
747 |
"(no name)" : debugger_emul->name); |
748 |
printf("current machine: \"%s\"\n", debugger_machine->name == NULL? |
749 |
"(no name)" : debugger_machine->name); |
750 |
} |
751 |
|
752 |
|
753 |
/* This is defined below. */ |
754 |
static void debugger_cmd_help(struct machine *m, char *cmd_line); |
755 |
|
756 |
|
757 |
/* |
758 |
* debugger_cmd_itrace(): |
759 |
*/ |
760 |
static void debugger_cmd_itrace(struct machine *m, char *cmd_line) |
761 |
{ |
762 |
if (*cmd_line) { |
763 |
printf("syntax: itrace\n"); |
764 |
return; |
765 |
} |
766 |
|
767 |
old_instruction_trace = 1 - old_instruction_trace; |
768 |
printf("instruction_trace = %s\n", old_instruction_trace? "ON":"OFF"); |
769 |
/* TODO: how to preserve quiet_mode? */ |
770 |
old_quiet_mode = 0; |
771 |
printf("quiet_mode = %s\n", old_quiet_mode? "ON" : "OFF"); |
772 |
} |
773 |
|
774 |
|
775 |
/* |
776 |
* debugger_cmd_lookup(): |
777 |
*/ |
778 |
static void debugger_cmd_lookup(struct machine *m, char *cmd_line) |
779 |
{ |
780 |
uint64_t addr; |
781 |
int res; |
782 |
char *symbol; |
783 |
uint64_t offset; |
784 |
|
785 |
if (cmd_line[0] == '\0') { |
786 |
printf("syntax: lookup name|addr\n"); |
787 |
return; |
788 |
|
789 |
} |
790 |
|
791 |
/* Addresses never need to be given in decimal form anyway, |
792 |
so assuming hex here will be ok. */ |
793 |
addr = strtoull(cmd_line, NULL, 16); |
794 |
|
795 |
if (addr == 0) { |
796 |
uint64_t newaddr; |
797 |
res = get_symbol_addr(&m->symbol_context, |
798 |
cmd_line, &newaddr); |
799 |
if (!res) { |
800 |
printf("lookup for '%s' failed\n", cmd_line); |
801 |
return; |
802 |
} |
803 |
printf("%s = 0x%016llx\n", cmd_line, (long long)newaddr); |
804 |
return; |
805 |
} |
806 |
|
807 |
symbol = get_symbol_name(&m->symbol_context, addr, &offset); |
808 |
|
809 |
if (symbol != NULL) |
810 |
printf("0x%016llx = %s\n", (long long)addr, symbol); |
811 |
else |
812 |
printf("lookup for '%s' failed\n", cmd_line); |
813 |
} |
814 |
|
815 |
|
816 |
/* |
817 |
* debugger_cmd_machine(): |
818 |
* |
819 |
* Dump info about the currently focused machine. |
820 |
*/ |
821 |
static void debugger_cmd_machine(struct machine *m, char *cmd_line) |
822 |
{ |
823 |
int iadd = 4; |
824 |
|
825 |
if (*cmd_line) { |
826 |
printf("syntax: machine\n"); |
827 |
return; |
828 |
} |
829 |
|
830 |
debug("machine \"%s\":\n", m->name); |
831 |
debug_indentation(iadd); |
832 |
machine_dumpinfo(m); |
833 |
debug_indentation(-iadd); |
834 |
} |
835 |
|
836 |
|
837 |
/* |
838 |
* debugger_cmd_opcodestats(): |
839 |
*/ |
840 |
static void debugger_cmd_opcodestats(struct machine *m, char *cmd_line) |
841 |
{ |
842 |
if (*cmd_line) { |
843 |
printf("syntax: opcodestats\n"); |
844 |
return; |
845 |
} |
846 |
|
847 |
if (!show_opcode_statistics) { |
848 |
printf("You need to start the emulator " |
849 |
"with -s, if you want to gather statistics.\n"); |
850 |
} else |
851 |
cpu_show_full_statistics(m); |
852 |
} |
853 |
|
854 |
|
855 |
/* |
856 |
* debugger_cmd_pause(): |
857 |
*/ |
858 |
static void debugger_cmd_pause(struct machine *m, char *cmd_line) |
859 |
{ |
860 |
int cpuid = -1; |
861 |
|
862 |
if (cmd_line[0] != '\0') |
863 |
cpuid = atoi(cmd_line); |
864 |
else { |
865 |
printf("syntax: pause cpuid\n"); |
866 |
return; |
867 |
} |
868 |
|
869 |
if (cpuid < 0 || cpuid >= m->ncpus) { |
870 |
printf("cpu%i doesn't exist.\n", cpuid); |
871 |
return; |
872 |
} |
873 |
|
874 |
m->cpus[cpuid]->running ^= 1; |
875 |
|
876 |
printf("cpu%i (%s) in machine \"%s\" is now %s\n", cpuid, |
877 |
m->cpus[cpuid]->name, m->name, |
878 |
m->cpus[cpuid]->running? "RUNNING" : "STOPPED"); |
879 |
} |
880 |
|
881 |
|
882 |
/* |
883 |
* debugger_cmd_print(): |
884 |
*/ |
885 |
static void debugger_cmd_print(struct machine *m, char *cmd_line) |
886 |
{ |
887 |
int res; |
888 |
uint64_t tmp; |
889 |
|
890 |
while (cmd_line[0] != '\0' && cmd_line[0] == ' ') |
891 |
cmd_line ++; |
892 |
|
893 |
if (cmd_line[0] == '\0') { |
894 |
printf("syntax: print expr\n"); |
895 |
return; |
896 |
} |
897 |
|
898 |
res = debugger_parse_name(m, cmd_line, 0, &tmp); |
899 |
switch (res) { |
900 |
case NAME_PARSE_NOMATCH: |
901 |
printf("No match.\n"); |
902 |
break; |
903 |
case NAME_PARSE_MULTIPLE: |
904 |
printf("Multiple matches. Try prefixing with %%, $, or @.\n"); |
905 |
break; |
906 |
case NAME_PARSE_REGISTER: |
907 |
printf("%s = 0x%llx\n", cmd_line, (long long)tmp); |
908 |
break; |
909 |
case NAME_PARSE_SYMBOL: |
910 |
printf("%s = 0x%016llx\n", cmd_line, (long long)tmp); |
911 |
break; |
912 |
case NAME_PARSE_NUMBER: |
913 |
printf("0x%llx\n", (long long)tmp); |
914 |
break; |
915 |
} |
916 |
} |
917 |
|
918 |
|
919 |
/* |
920 |
* debugger_cmd_put(): |
921 |
*/ |
922 |
static void debugger_cmd_put(struct machine *m, char *cmd_line) |
923 |
{ |
924 |
static char put_type = ' '; /* Remembered across multiple calls. */ |
925 |
char copy[200]; |
926 |
int res, syntax_ok = 0; |
927 |
char *p, *p2, *q = NULL; |
928 |
uint64_t addr, data; |
929 |
unsigned char a_byte; |
930 |
|
931 |
strncpy(copy, cmd_line, sizeof(copy)); |
932 |
copy[sizeof(copy)-1] = '\0'; |
933 |
|
934 |
/* syntax: put [b|h|w|d|q] addr, data */ |
935 |
|
936 |
p = strchr(copy, ','); |
937 |
if (p != NULL) { |
938 |
*p++ = '\0'; |
939 |
while (*p == ' ' && *p) |
940 |
p++; |
941 |
while (strlen(copy) >= 1 && |
942 |
copy[strlen(copy) - 1] == ' ') |
943 |
copy[strlen(copy) - 1] = '\0'; |
944 |
|
945 |
/* printf("L = '%s', R = '%s'\n", copy, p); */ |
946 |
|
947 |
q = copy; |
948 |
p2 = strchr(q, ' '); |
949 |
|
950 |
if (p2 != NULL) { |
951 |
*p2 = '\0'; |
952 |
if (strlen(q) != 1) { |
953 |
printf("Invalid type '%s'\n", q); |
954 |
return; |
955 |
} |
956 |
put_type = *q; |
957 |
q = p2 + 1; |
958 |
} |
959 |
|
960 |
/* printf("type '%c', L '%s', R '%s'\n", put_type, q, p); */ |
961 |
syntax_ok = 1; |
962 |
} |
963 |
|
964 |
if (!syntax_ok) { |
965 |
printf("syntax: put [b|h|w|d|q] addr, data\n"); |
966 |
printf(" b byte (8 bits)\n"); |
967 |
printf(" h half-word (16 bits)\n"); |
968 |
printf(" w word (32 bits)\n"); |
969 |
printf(" d doubleword (64 bits)\n"); |
970 |
printf(" q quad-word (128 bits)\n"); |
971 |
return; |
972 |
} |
973 |
|
974 |
if (put_type == ' ') { |
975 |
printf("No type specified.\n"); |
976 |
return; |
977 |
} |
978 |
|
979 |
/* here: q is the address, p is the data. */ |
980 |
|
981 |
res = debugger_parse_name(m, q, 0, &addr); |
982 |
switch (res) { |
983 |
case NAME_PARSE_NOMATCH: |
984 |
printf("Couldn't parse the address.\n"); |
985 |
return; |
986 |
case NAME_PARSE_MULTIPLE: |
987 |
printf("Multiple matches for the address." |
988 |
" Try prefixing with %%, $, or @.\n"); |
989 |
return; |
990 |
case NAME_PARSE_REGISTER: |
991 |
case NAME_PARSE_SYMBOL: |
992 |
case NAME_PARSE_NUMBER: |
993 |
break; |
994 |
default: |
995 |
printf("INTERNAL ERROR in debugger.c.\n"); |
996 |
return; |
997 |
} |
998 |
|
999 |
res = debugger_parse_name(m, p, 0, &data); |
1000 |
switch (res) { |
1001 |
case NAME_PARSE_NOMATCH: |
1002 |
printf("Couldn't parse the data.\n"); |
1003 |
return; |
1004 |
case NAME_PARSE_MULTIPLE: |
1005 |
printf("Multiple matches for the data value." |
1006 |
" Try prefixing with %%, $, or @.\n"); |
1007 |
return; |
1008 |
case NAME_PARSE_REGISTER: |
1009 |
case NAME_PARSE_SYMBOL: |
1010 |
case NAME_PARSE_NUMBER: |
1011 |
break; |
1012 |
default: |
1013 |
printf("INTERNAL ERROR in debugger.c.\n"); |
1014 |
return; |
1015 |
} |
1016 |
|
1017 |
/* TODO: haha, maybe this should be refactored */ |
1018 |
|
1019 |
switch (put_type) { |
1020 |
case 'b': |
1021 |
a_byte = data; |
1022 |
printf("0x%016llx: %02x", (long long)addr, a_byte); |
1023 |
if (data > 255) |
1024 |
printf(" (NOTE: truncating %0llx)", (long long)data); |
1025 |
res = m->cpus[0]->memory_rw(m->cpus[0], m->cpus[0]->mem, addr, |
1026 |
&a_byte, 1, MEM_WRITE, CACHE_NONE | NO_EXCEPTIONS); |
1027 |
if (!res) |
1028 |
printf(" FAILED!\n"); |
1029 |
printf("\n"); |
1030 |
return; |
1031 |
case 'h': |
1032 |
if ((data & 1) != 0) |
1033 |
printf("WARNING: address isn't aligned\n"); |
1034 |
printf("0x%016llx: %04x", (long long)addr, (int)data); |
1035 |
if (data > 0xffff) |
1036 |
printf(" (NOTE: truncating %0llx)", (long long)data); |
1037 |
res = store_16bit_word(m->cpus[0], addr, data); |
1038 |
if (!res) |
1039 |
printf(" FAILED!\n"); |
1040 |
printf("\n"); |
1041 |
return; |
1042 |
case 'w': |
1043 |
if ((data & 3) != 0) |
1044 |
printf("WARNING: address isn't aligned\n"); |
1045 |
printf("0x%016llx: %08x", (long long)addr, (int)data); |
1046 |
if (data > 0xffffffff && (data >> 32) != 0 |
1047 |
&& (data >> 32) != 0xffffffff) |
1048 |
printf(" (NOTE: truncating %0llx)", (long long)data); |
1049 |
res = store_32bit_word(m->cpus[0], addr, data); |
1050 |
if (!res) |
1051 |
printf(" FAILED!\n"); |
1052 |
printf("\n"); |
1053 |
return; |
1054 |
case 'd': |
1055 |
if ((data & 7) != 0) |
1056 |
printf("WARNING: address isn't aligned\n"); |
1057 |
printf("0x%016llx: %016llx", (long long)addr, (long long)data); |
1058 |
res = store_64bit_word(m->cpus[0], addr, data); |
1059 |
if (!res) |
1060 |
printf(" FAILED!\n"); |
1061 |
printf("\n"); |
1062 |
return; |
1063 |
case 'q': |
1064 |
printf("quad-words: TODO\n"); |
1065 |
/* TODO */ |
1066 |
return; |
1067 |
default: |
1068 |
printf("Unimplemented type '%c'\n", put_type); |
1069 |
return; |
1070 |
} |
1071 |
} |
1072 |
|
1073 |
|
1074 |
/* |
1075 |
* debugger_cmd_quiet(): |
1076 |
*/ |
1077 |
static void debugger_cmd_quiet(struct machine *m, char *cmd_line) |
1078 |
{ |
1079 |
int toggle = 1; |
1080 |
int previous_mode = old_quiet_mode; |
1081 |
|
1082 |
if (cmd_line[0] != '\0') { |
1083 |
while (cmd_line[0] != '\0' && cmd_line[0] == ' ') |
1084 |
cmd_line ++; |
1085 |
switch (cmd_line[0]) { |
1086 |
case '0': |
1087 |
toggle = 0; |
1088 |
old_quiet_mode = 0; |
1089 |
break; |
1090 |
case '1': |
1091 |
toggle = 0; |
1092 |
old_quiet_mode = 1; |
1093 |
break; |
1094 |
case 'o': |
1095 |
case 'O': |
1096 |
toggle = 0; |
1097 |
switch (cmd_line[1]) { |
1098 |
case 'n': |
1099 |
case 'N': |
1100 |
old_quiet_mode = 1; |
1101 |
break; |
1102 |
default: |
1103 |
old_quiet_mode = 0; |
1104 |
} |
1105 |
break; |
1106 |
default: |
1107 |
printf("syntax: quiet [on|off]\n"); |
1108 |
return; |
1109 |
} |
1110 |
} |
1111 |
|
1112 |
if (toggle) |
1113 |
old_quiet_mode = 1 - old_quiet_mode; |
1114 |
|
1115 |
printf("quiet_mode = %s", old_quiet_mode? "ON" : "OFF"); |
1116 |
if (old_quiet_mode != previous_mode) |
1117 |
printf(" (was: %s)", previous_mode? "ON" : "OFF"); |
1118 |
printf("\n"); |
1119 |
} |
1120 |
|
1121 |
|
1122 |
/* |
1123 |
* debugger_cmd_quit(): |
1124 |
*/ |
1125 |
static void debugger_cmd_quit(struct machine *m, char *cmd_line) |
1126 |
{ |
1127 |
int i, j, k; |
1128 |
struct emul *e; |
1129 |
|
1130 |
if (*cmd_line) { |
1131 |
printf("syntax: quit\n"); |
1132 |
return; |
1133 |
} |
1134 |
|
1135 |
for (i=0; i<debugger_n_emuls; i++) { |
1136 |
single_step = 0; |
1137 |
|
1138 |
e = debugger_emuls[i]; |
1139 |
force_debugger_at_exit = 0; |
1140 |
|
1141 |
for (j=0; j<e->n_machines; j++) { |
1142 |
struct machine *m = e->machines[j]; |
1143 |
|
1144 |
for (k=0; k<m->ncpus; k++) |
1145 |
m->cpus[k]->running = 0; |
1146 |
|
1147 |
m->exit_without_entering_debugger = 1; |
1148 |
} |
1149 |
} |
1150 |
|
1151 |
exit_debugger = 1; |
1152 |
} |
1153 |
|
1154 |
|
1155 |
/* |
1156 |
* debugger_cmd_reg(): |
1157 |
*/ |
1158 |
static void debugger_cmd_reg(struct machine *m, char *cmd_line) |
1159 |
{ |
1160 |
int i, cpuid = -1, coprocnr = -1; |
1161 |
int gprs, coprocs; |
1162 |
char *p; |
1163 |
|
1164 |
/* [cpuid][,c] */ |
1165 |
if (cmd_line[0] != '\0') { |
1166 |
if (cmd_line[0] != ',') { |
1167 |
cpuid = strtoull(cmd_line, NULL, 0); |
1168 |
if (cpuid < 0 || cpuid >= m->ncpus) { |
1169 |
printf("cpu%i doesn't exist.\n", cpuid); |
1170 |
return; |
1171 |
} |
1172 |
} |
1173 |
p = strchr(cmd_line, ','); |
1174 |
if (p != NULL) { |
1175 |
coprocnr = atoi(p + 1); |
1176 |
if (coprocnr < 0 || coprocnr >= 4) { |
1177 |
printf("Invalid coprocessor number.\n"); |
1178 |
return; |
1179 |
} |
1180 |
} |
1181 |
} |
1182 |
|
1183 |
gprs = (coprocnr == -1)? 1 : 0; |
1184 |
coprocs = (coprocnr == -1)? 0x0 : (1 << coprocnr); |
1185 |
|
1186 |
for (i=0; i<m->ncpus; i++) |
1187 |
if (cpuid == -1 || i == cpuid) |
1188 |
cpu_register_dump(m, m->cpus[i], gprs, coprocs); |
1189 |
} |
1190 |
|
1191 |
|
1192 |
/* |
1193 |
* debugger_cmd_step(): |
1194 |
*/ |
1195 |
static void debugger_cmd_step(struct machine *m, char *cmd_line) |
1196 |
{ |
1197 |
int n = 1; |
1198 |
|
1199 |
if (cmd_line[0] != '\0') { |
1200 |
n = strtoull(cmd_line, NULL, 0); |
1201 |
if (n < 1) { |
1202 |
printf("invalid nr of steps\n"); |
1203 |
return; |
1204 |
} |
1205 |
} |
1206 |
|
1207 |
n_steps_left_before_interaction = n - 1; |
1208 |
|
1209 |
/* Special hack, see debugger() for more info. */ |
1210 |
exit_debugger = -1; |
1211 |
|
1212 |
strcpy(repeat_cmd, "step"); |
1213 |
} |
1214 |
|
1215 |
|
1216 |
/* |
1217 |
* debugger_cmd_tlbdump(): |
1218 |
* |
1219 |
* Dump each CPU's TLB contents. |
1220 |
*/ |
1221 |
static void debugger_cmd_tlbdump(struct machine *m, char *cmd_line) |
1222 |
{ |
1223 |
int x = -1; |
1224 |
int rawflag = 0; |
1225 |
|
1226 |
if (cmd_line[0] != '\0') { |
1227 |
char *p; |
1228 |
if (cmd_line[0] != ',') { |
1229 |
x = strtoull(cmd_line, NULL, 0); |
1230 |
if (x < 0 || x >= m->ncpus) { |
1231 |
printf("cpu%i doesn't exist.\n", x); |
1232 |
return; |
1233 |
} |
1234 |
} |
1235 |
p = strchr(cmd_line, ','); |
1236 |
if (p != NULL) { |
1237 |
switch (p[1]) { |
1238 |
case 'r': |
1239 |
case 'R': |
1240 |
rawflag = 1; |
1241 |
break; |
1242 |
default: |
1243 |
printf("Unknown tlbdump flag.\n"); |
1244 |
printf("syntax: tlbdump [cpuid][,r]\n"); |
1245 |
return; |
1246 |
} |
1247 |
} |
1248 |
} |
1249 |
|
1250 |
cpu_tlbdump(m, x, rawflag); |
1251 |
} |
1252 |
|
1253 |
|
1254 |
/* |
1255 |
* debugger_cmd_trace(): |
1256 |
*/ |
1257 |
static void debugger_cmd_trace(struct machine *m, char *cmd_line) |
1258 |
{ |
1259 |
if (*cmd_line) { |
1260 |
printf("syntax: trace\n"); |
1261 |
return; |
1262 |
} |
1263 |
|
1264 |
old_show_trace_tree = 1 - old_show_trace_tree; |
1265 |
printf("show_trace_tree = %s\n", old_show_trace_tree? "ON" : "OFF"); |
1266 |
|
1267 |
if (m->bintrans_enable && old_show_trace_tree) |
1268 |
printf("NOTE: the trace tree functionality doesn't " |
1269 |
"work very well with bintrans!\n"); |
1270 |
|
1271 |
/* TODO: how to preserve quiet_mode? */ |
1272 |
old_quiet_mode = 0; |
1273 |
printf("quiet_mode = %s\n", old_quiet_mode? "ON" : "OFF"); |
1274 |
} |
1275 |
|
1276 |
|
1277 |
/* |
1278 |
* debugger_cmd_unassemble(): |
1279 |
* |
1280 |
* Dump emulated memory as instructions. |
1281 |
* |
1282 |
* syntax: unassemble [addr [endaddr]] |
1283 |
*/ |
1284 |
static void debugger_cmd_unassemble(struct machine *m, char *cmd_line) |
1285 |
{ |
1286 |
uint64_t addr, addr_start, addr_end; |
1287 |
struct cpu *c; |
1288 |
struct memory *mem; |
1289 |
char *p = NULL; |
1290 |
int r, lines_left = -1; |
1291 |
|
1292 |
if (cmd_line[0] != '\0') { |
1293 |
uint64_t tmp; |
1294 |
char *tmps = strdup(cmd_line); |
1295 |
|
1296 |
/* addr: */ |
1297 |
p = strchr(tmps, ' '); |
1298 |
if (p != NULL) |
1299 |
*p = '\0'; |
1300 |
r = debugger_parse_name(m, tmps, 0, &tmp); |
1301 |
free(tmps); |
1302 |
|
1303 |
if (r == NAME_PARSE_NOMATCH || r == NAME_PARSE_MULTIPLE) { |
1304 |
printf("Unparsable address: %s\n", cmd_line); |
1305 |
return; |
1306 |
} else { |
1307 |
last_unasm_addr = tmp; |
1308 |
} |
1309 |
|
1310 |
p = strchr(cmd_line, ' '); |
1311 |
} |
1312 |
|
1313 |
addr_start = last_unasm_addr; |
1314 |
|
1315 |
if (addr_start == MAGIC_UNTOUCHED) { |
1316 |
uint64_t tmp; |
1317 |
int match_register = 0; |
1318 |
cpu_register_match(m, "pc", 0, &tmp, &match_register); |
1319 |
if (match_register) { |
1320 |
addr_start = tmp; |
1321 |
} else { |
1322 |
printf("No starting address.\n"); |
1323 |
return; |
1324 |
} |
1325 |
} |
1326 |
|
1327 |
addr_end = addr_start + 1000; |
1328 |
|
1329 |
/* endaddr: */ |
1330 |
if (p != NULL) { |
1331 |
while (*p == ' ' && *p) |
1332 |
p++; |
1333 |
r = debugger_parse_name(m, p, 0, &addr_end); |
1334 |
if (r == NAME_PARSE_NOMATCH || r == NAME_PARSE_MULTIPLE) { |
1335 |
printf("Unparsable address: %s\n", cmd_line); |
1336 |
return; |
1337 |
} |
1338 |
} else |
1339 |
lines_left = 20; |
1340 |
|
1341 |
if (m->cpus == NULL) { |
1342 |
printf("No cpus (?)\n"); |
1343 |
return; |
1344 |
} |
1345 |
c = m->cpus[m->bootstrap_cpu]; |
1346 |
if (c == NULL) { |
1347 |
printf("m->cpus[m->bootstrap_cpu] = NULL\n"); |
1348 |
return; |
1349 |
} |
1350 |
mem = m->cpus[m->bootstrap_cpu]->mem; |
1351 |
|
1352 |
addr = addr_start; |
1353 |
|
1354 |
ctrl_c = 0; |
1355 |
|
1356 |
while (addr < addr_end) { |
1357 |
int i, len; |
1358 |
unsigned char buf[32]; /* TODO: How long can an |
1359 |
instruction be, on weird archs? */ |
1360 |
memset(buf, 0, sizeof(buf)); |
1361 |
|
1362 |
for (i=0; i<sizeof(buf); i++) |
1363 |
c->memory_rw(c, mem, addr+i, buf+i, 1, MEM_READ, |
1364 |
CACHE_NONE | NO_EXCEPTIONS); |
1365 |
|
1366 |
len = cpu_disassemble_instr(m, c, buf, 0, addr, 0); |
1367 |
|
1368 |
if (ctrl_c) |
1369 |
return; |
1370 |
if (len == 0) |
1371 |
break; |
1372 |
|
1373 |
addr += len; |
1374 |
|
1375 |
if (lines_left != -1) { |
1376 |
lines_left --; |
1377 |
if (lines_left == 0) |
1378 |
break; |
1379 |
} |
1380 |
} |
1381 |
|
1382 |
last_unasm_addr = addr; |
1383 |
|
1384 |
strcpy(repeat_cmd, "unassemble"); |
1385 |
} |
1386 |
|
1387 |
|
1388 |
/* |
1389 |
* debugger_cmd_version(): |
1390 |
*/ |
1391 |
static void debugger_cmd_version(struct machine *m, char *cmd_line) |
1392 |
{ |
1393 |
if (*cmd_line) { |
1394 |
printf("syntax: version\n"); |
1395 |
return; |
1396 |
} |
1397 |
|
1398 |
#ifdef VERSION |
1399 |
printf("%s, %s\n", VERSION, COMPILE_DATE); |
1400 |
#else |
1401 |
printf("(no version), %s\n", COMPILE_DATE); |
1402 |
#endif |
1403 |
} |
1404 |
|
1405 |
|
1406 |
struct cmd { |
1407 |
char *name; |
1408 |
char *args; |
1409 |
int tmp_flag; |
1410 |
void (*f)(struct machine *, char *cmd_line); |
1411 |
char *description; |
1412 |
}; |
1413 |
|
1414 |
static struct cmd cmds[] = { |
1415 |
{ "breakpoint", "...", 0, debugger_cmd_breakpoint, |
1416 |
"manipulate breakpoints" }, |
1417 |
|
1418 |
{ "bintrans", "[on|off]", 0, debugger_cmd_bintrans, |
1419 |
"toggle bintrans on or off" }, |
1420 |
|
1421 |
/* NOTE: Try to keep 'c' down to only one command. Having 'continue' |
1422 |
available as a one-letter command is very convenient. */ |
1423 |
|
1424 |
{ "continue", "", 0, debugger_cmd_continue, |
1425 |
"continue execution" }, |
1426 |
|
1427 |
{ "device", "...", 0, debugger_cmd_device, |
1428 |
"show info about (or manipulate) devices" }, |
1429 |
|
1430 |
{ "dump", "[addr [endaddr]]", 0, debugger_cmd_dump, |
1431 |
"dump memory contents in hex and ASCII" }, |
1432 |
|
1433 |
{ "emuls", "", 0, debugger_cmd_emuls, |
1434 |
"print a summary of all current emuls" }, |
1435 |
|
1436 |
{ "focus", "x[,y]", 0, debugger_cmd_focus, |
1437 |
"changes focus to machine x (in emul y)" }, |
1438 |
|
1439 |
{ "help", "", 0, debugger_cmd_help, |
1440 |
"print this help message" }, |
1441 |
|
1442 |
{ "itrace", "", 0, debugger_cmd_itrace, |
1443 |
"toggle instruction_trace on or off" }, |
1444 |
|
1445 |
{ "lookup", "name|addr", 0, debugger_cmd_lookup, |
1446 |
"lookup a symbol by name or address" }, |
1447 |
|
1448 |
{ "machine", "", 0, debugger_cmd_machine, |
1449 |
"print a summary of the current machine" }, |
1450 |
|
1451 |
{ "opcodestats", "", 0, debugger_cmd_opcodestats, |
1452 |
"show opcode statistics" }, |
1453 |
|
1454 |
{ "pause", "cpuid", 0, debugger_cmd_pause, |
1455 |
"pause (or unpause) a CPU" }, |
1456 |
|
1457 |
{ "print", "expr", 0, debugger_cmd_print, |
1458 |
"evaluate an expression without side-effects" }, |
1459 |
|
1460 |
{ "put", "[b|h|w|d|q] addr, data", 0, debugger_cmd_put, |
1461 |
"modify emulated memory contents" }, |
1462 |
|
1463 |
{ "quiet", "[on|off]", 0, debugger_cmd_quiet, |
1464 |
"toggle quiet_mode on or off" }, |
1465 |
|
1466 |
{ "quit", "", 0, debugger_cmd_quit, |
1467 |
"quit the emulator" }, |
1468 |
|
1469 |
{ "reg", "[cpuid][,c]", 0, debugger_cmd_reg, |
1470 |
"show GPRs (or coprocessor c's registers)" }, |
1471 |
|
1472 |
/* NOTE: Try to keep 's' down to only one command. Having 'step' |
1473 |
available as a one-letter command is very convenient. */ |
1474 |
|
1475 |
{ "step", "[n]", 0, debugger_cmd_step, |
1476 |
"single-step one (or n) instruction(s)" }, |
1477 |
|
1478 |
{ "tlbdump", "[cpuid][,r]", 0, debugger_cmd_tlbdump, |
1479 |
"dump TLB contents (add ',r' for raw data)" }, |
1480 |
|
1481 |
{ "trace", "", 0, debugger_cmd_trace, |
1482 |
"toggle show_trace_tree on or off" }, |
1483 |
|
1484 |
{ "unassemble", "[addr [endaddr]]", 0, debugger_cmd_unassemble, |
1485 |
"dump memory contents as instructions" }, |
1486 |
|
1487 |
{ "version", "", 0, debugger_cmd_version, |
1488 |
"print version information" }, |
1489 |
|
1490 |
{ NULL, NULL, 0, NULL, NULL } |
1491 |
}; |
1492 |
|
1493 |
|
1494 |
/* |
1495 |
* debugger_cmd_help(): |
1496 |
* |
1497 |
* Print a list of available commands. |
1498 |
* |
1499 |
* NOTE: This is placed after the cmds[] array, because it needs to |
1500 |
* access it. |
1501 |
*/ |
1502 |
static void debugger_cmd_help(struct machine *m, char *cmd_line) |
1503 |
{ |
1504 |
int i, j, max_name_len = 0; |
1505 |
|
1506 |
i = 0; |
1507 |
while (cmds[i].name != NULL) { |
1508 |
int a = strlen(cmds[i].name); |
1509 |
if (cmds[i].args != NULL) |
1510 |
a += 1 + strlen(cmds[i].args); |
1511 |
if (a > max_name_len) |
1512 |
max_name_len = a; |
1513 |
i++; |
1514 |
} |
1515 |
|
1516 |
printf("Available commands:\n"); |
1517 |
|
1518 |
i = 0; |
1519 |
while (cmds[i].name != NULL) { |
1520 |
char buf[100]; |
1521 |
snprintf(buf, sizeof(buf), "%s", cmds[i].name); |
1522 |
if (cmds[i].args != NULL) |
1523 |
snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), |
1524 |
" %s", cmds[i].args); |
1525 |
|
1526 |
printf(" "); |
1527 |
for (j=0; j<max_name_len; j++) |
1528 |
if (j < strlen(buf)) |
1529 |
printf("%c", buf[j]); |
1530 |
else |
1531 |
printf(" "); |
1532 |
|
1533 |
printf(" %s\n", cmds[i].description); |
1534 |
i++; |
1535 |
} |
1536 |
|
1537 |
printf("Generic assignments: x = expr\n"); |
1538 |
printf("where x must be a register, and expr can be a register, a " |
1539 |
"numeric value, or\na symbol name (+ an optional numeric offset)." |
1540 |
" In case there are multiple\nmatches (ie a symbol that has the " |
1541 |
"same name as a register), you may add a\nprefix character as a " |
1542 |
"hint: '%%' for registers, '@' for symbols, and\n'$' for numeric" |
1543 |
" values. Use 0x for hexadecimal values.\n"); |
1544 |
} |
1545 |
|
1546 |
|
1547 |
/****************************************************************************/ |
1548 |
|
1549 |
|
1550 |
/* |
1551 |
* debugger_assignment(): |
1552 |
* |
1553 |
* cmd contains something like "pc=0x80001000", or "r31=memcpy+0x40". |
1554 |
*/ |
1555 |
void debugger_assignment(struct machine *m, char *cmd) |
1556 |
{ |
1557 |
char *left, *right; |
1558 |
int res_left, res_right; |
1559 |
uint64_t tmp; |
1560 |
|
1561 |
left = malloc(strlen(cmd) + 1); |
1562 |
if (left == NULL) { |
1563 |
fprintf(stderr, "out of memory in debugger_assignment()\n"); |
1564 |
exit(1); |
1565 |
} |
1566 |
strcpy(left, cmd); |
1567 |
right = strchr(left, '='); |
1568 |
if (right == NULL) { |
1569 |
fprintf(stderr, "internal error in the debugger\n"); |
1570 |
exit(1); |
1571 |
} |
1572 |
*right = '\0'; |
1573 |
|
1574 |
/* Remove trailing spaces in left: */ |
1575 |
while (strlen(left) >= 1 && left[strlen(left)-1] == ' ') |
1576 |
left[strlen(left)-1] = '\0'; |
1577 |
|
1578 |
/* Remove leading spaces in right: */ |
1579 |
right++; |
1580 |
while (*right == ' ' && *right != '\0') |
1581 |
right++; |
1582 |
|
1583 |
/* printf("left = '%s'\nright = '%s'\n", left, right); */ |
1584 |
|
1585 |
res_right = debugger_parse_name(m, right, 0, &tmp); |
1586 |
switch (res_right) { |
1587 |
case NAME_PARSE_NOMATCH: |
1588 |
printf("No match for the right-hand side of the assignment.\n"); |
1589 |
break; |
1590 |
case NAME_PARSE_MULTIPLE: |
1591 |
printf("Multiple matches for the right-hand side of the " |
1592 |
"assignment.\n"); |
1593 |
break; |
1594 |
default: |
1595 |
res_left = debugger_parse_name(m, left, 1, &tmp); |
1596 |
switch (res_left) { |
1597 |
case NAME_PARSE_NOMATCH: |
1598 |
printf("No match for the left-hand side of the " |
1599 |
"assignment.\n"); |
1600 |
break; |
1601 |
case NAME_PARSE_MULTIPLE: |
1602 |
printf("Multiple matches for the left-hand side " |
1603 |
"of the assignment.\n"); |
1604 |
break; |
1605 |
default: |
1606 |
debugger_cmd_print(m, left); |
1607 |
} |
1608 |
} |
1609 |
|
1610 |
free(left); |
1611 |
} |
1612 |
|
1613 |
|
1614 |
/* |
1615 |
* debugger_readline(): |
1616 |
* |
1617 |
* Read a line from the terminal. |
1618 |
*/ |
1619 |
static char *debugger_readline(void) |
1620 |
{ |
1621 |
int ch, i, j, n, i_match, reallen, cmd_len, cursor_pos; |
1622 |
int read_from_index = last_cmd_index; |
1623 |
char *cmd = last_cmd[last_cmd_index]; |
1624 |
|
1625 |
cmd_len = 0; cmd[0] = '\0'; |
1626 |
printf("GXemul> "); |
1627 |
fflush(stdout); |
1628 |
|
1629 |
ch = '\0'; |
1630 |
cmd_len = 0; |
1631 |
cursor_pos = 0; |
1632 |
|
1633 |
while (ch != '\n') { |
1634 |
/* |
1635 |
* TODO: This uses up 100% CPU, maybe that isn't too good. |
1636 |
* The usleep() call might make it a tiny bit nicer on other |
1637 |
* running processes, but it is still very ugly. |
1638 |
*/ |
1639 |
while ((ch = console_readchar(MAIN_CONSOLE)) < 0) { |
1640 |
x11_check_event(debugger_emuls, debugger_n_emuls); |
1641 |
usleep(2); |
1642 |
} |
1643 |
|
1644 |
if ((ch == '\b' || ch == 127) && cursor_pos > 0) { |
1645 |
/* Backspace. */ |
1646 |
cursor_pos --; |
1647 |
cmd_len --; |
1648 |
memmove(cmd + cursor_pos, cmd + cursor_pos + 1, |
1649 |
cmd_len); |
1650 |
cmd[cmd_len] = '\0'; |
1651 |
printf("\b"); |
1652 |
for (i=cursor_pos; i<cmd_len; i++) |
1653 |
printf("%c", cmd[i]); |
1654 |
printf(" \b"); |
1655 |
for (i=cursor_pos; i<cmd_len; i++) |
1656 |
printf("\b"); |
1657 |
} else if (ch == 4 && cmd_len > 0 && cursor_pos < cmd_len) { |
1658 |
/* CTRL-D: Delete. */ |
1659 |
cmd_len --; |
1660 |
memmove(cmd + cursor_pos, cmd + cursor_pos + 1, |
1661 |
cmd_len); |
1662 |
cmd[cmd_len] = '\0'; |
1663 |
for (i=cursor_pos; i<cmd_len; i++) |
1664 |
printf("%c", cmd[i]); |
1665 |
printf(" \b"); |
1666 |
for (i=cursor_pos; i<cmd_len; i++) |
1667 |
printf("\b"); |
1668 |
} else if (ch == 1) { |
1669 |
/* CTRL-A: Start of line. */ |
1670 |
while (cursor_pos > 0) { |
1671 |
cursor_pos --; |
1672 |
printf("\b"); |
1673 |
} |
1674 |
} else if (ch == 2) { |
1675 |
/* CTRL-B: Backwards one character. */ |
1676 |
if (cursor_pos > 0) { |
1677 |
printf("\b"); |
1678 |
cursor_pos --; |
1679 |
} |
1680 |
} else if (ch == 5) { |
1681 |
/* CTRL-E: End of line. */ |
1682 |
while (cursor_pos < cmd_len) { |
1683 |
printf("%c", cmd[cursor_pos]); |
1684 |
cursor_pos ++; |
1685 |
} |
1686 |
} else if (ch == 6) { |
1687 |
/* CTRL-F: Forward one character. */ |
1688 |
if (cursor_pos < cmd_len) { |
1689 |
printf("%c", |
1690 |
cmd[cursor_pos]); |
1691 |
cursor_pos ++; |
1692 |
} |
1693 |
} else if (ch == 11) { |
1694 |
/* CTRL-K: Kill to end of line. */ |
1695 |
for (i=0; i<MAX_CMD_LEN; i++) |
1696 |
console_makeavail(MAIN_CONSOLE, 4); /* :-) */ |
1697 |
} else if (ch == 14 || ch == 16) { |
1698 |
/* CTRL-P: Previous line in the command history, |
1699 |
CTRL-N: next line */ |
1700 |
do { |
1701 |
if (ch == 14 && |
1702 |
read_from_index == last_cmd_index) |
1703 |
break; |
1704 |
if (ch == 16) |
1705 |
i = read_from_index - 1; |
1706 |
else |
1707 |
i = read_from_index + 1; |
1708 |
|
1709 |
if (i < 0) |
1710 |
i = N_PREVIOUS_CMDS - 1; |
1711 |
if (i >= N_PREVIOUS_CMDS) |
1712 |
i = 0; |
1713 |
|
1714 |
/* Special case: pressing 'down' |
1715 |
to reach last_cmd_index: */ |
1716 |
if (i == last_cmd_index) { |
1717 |
read_from_index = i; |
1718 |
for (i=cursor_pos; i<cmd_len; |
1719 |
i++) |
1720 |
printf(" "); |
1721 |
for (i=cmd_len-1; i>=0; i--) |
1722 |
printf("\b \b"); |
1723 |
cmd[0] = '\0'; |
1724 |
cmd_len = cursor_pos = 0; |
1725 |
} else if (last_cmd[i][0] != '\0') { |
1726 |
/* Copy from old line: */ |
1727 |
read_from_index = i; |
1728 |
for (i=cursor_pos; i<cmd_len; |
1729 |
i++) |
1730 |
printf(" "); |
1731 |
for (i=cmd_len-1; i>=0; i--) |
1732 |
printf("\b \b"); |
1733 |
strcpy(cmd, |
1734 |
last_cmd[read_from_index]); |
1735 |
cmd_len = strlen(cmd); |
1736 |
printf("%s", cmd); |
1737 |
cursor_pos = cmd_len; |
1738 |
} |
1739 |
} while (0); |
1740 |
} else if (ch >= ' ' && cmd_len < MAX_CMD_LEN) { |
1741 |
/* Visible character: */ |
1742 |
memmove(cmd + cursor_pos + 1, cmd + cursor_pos, |
1743 |
cmd_len - cursor_pos); |
1744 |
cmd[cursor_pos] = ch; |
1745 |
cmd_len ++; |
1746 |
cursor_pos ++; |
1747 |
cmd[cmd_len] = '\0'; |
1748 |
printf("%c", ch); |
1749 |
for (i=cursor_pos; i<cmd_len; i++) |
1750 |
printf("%c", cmd[i]); |
1751 |
for (i=cursor_pos; i<cmd_len; i++) |
1752 |
printf("\b"); |
1753 |
} else if (ch == '\r' || ch == '\n') { |
1754 |
ch = '\n'; |
1755 |
printf("\n"); |
1756 |
} else if (ch == '\t') { |
1757 |
/* Super-simple tab-completion: */ |
1758 |
i = 0; |
1759 |
while (cmds[i].name != NULL) |
1760 |
cmds[i++].tmp_flag = 0; |
1761 |
|
1762 |
/* Check for a (partial) command match: */ |
1763 |
n = i = i_match = 0; |
1764 |
while (cmds[i].name != NULL) { |
1765 |
if (strncasecmp(cmds[i].name, cmd, |
1766 |
cmd_len) == 0) { |
1767 |
cmds[i].tmp_flag = 1; |
1768 |
i_match = i; |
1769 |
n++; |
1770 |
} |
1771 |
i++; |
1772 |
} |
1773 |
|
1774 |
switch (n) { |
1775 |
case 0: /* Beep. */ |
1776 |
printf("\a"); |
1777 |
break; |
1778 |
case 1: /* Add the rest of the command: */ |
1779 |
reallen = strlen(cmds[i_match].name); |
1780 |
for (i=cmd_len; i<reallen; i++) |
1781 |
console_makeavail(MAIN_CONSOLE, |
1782 |
cmds[i_match].name[i]); |
1783 |
/* ... and a space, if the command takes |
1784 |
any arguments: */ |
1785 |
if (cmds[i_match].args != NULL && |
1786 |
cmds[i_match].args[0] != '\0') |
1787 |
console_makeavail(MAIN_CONSOLE, ' '); |
1788 |
break; |
1789 |
default: |
1790 |
/* Show all possible commands: */ |
1791 |
printf("\a\n"); /* Beep. :-) */ |
1792 |
i = 0; /* i = cmds index */ |
1793 |
j = 0; /* j = # of cmds printed */ |
1794 |
while (cmds[i].name != NULL) { |
1795 |
if (cmds[i].tmp_flag) { |
1796 |
int q; |
1797 |
if (j == 0) |
1798 |
printf(" "); |
1799 |
printf("%s", |
1800 |
cmds[i].name); |
1801 |
j++; |
1802 |
if (j != 6) |
1803 |
for (q=0; q<13-strlen( |
1804 |
cmds[i].name); q++) |
1805 |
printf(" "); |
1806 |
if (j == 6) { |
1807 |
printf("\n"); |
1808 |
j = 0; |
1809 |
} |
1810 |
} |
1811 |
i++; |
1812 |
} |
1813 |
if (j != 0) |
1814 |
printf("\n"); |
1815 |
printf("GXemul> "); |
1816 |
for (i=0; i<cmd_len; i++) |
1817 |
printf("%c", cmd[i]); |
1818 |
} |
1819 |
} else if (ch == 27) { |
1820 |
/* Escape codes: (cursor keys etc) */ |
1821 |
while ((ch = console_readchar(MAIN_CONSOLE)) < 0) |
1822 |
usleep(1); |
1823 |
if (ch == '[' || ch == 'O') { |
1824 |
while ((ch = console_readchar(MAIN_CONSOLE)) |
1825 |
< 0) |
1826 |
usleep(1); |
1827 |
switch (ch) { |
1828 |
case '2': /* 2~ = ins */ |
1829 |
case '5': /* 5~ = pgup */ |
1830 |
case '6': /* 6~ = pgdn */ |
1831 |
/* TODO: Ugly hack, but might work. */ |
1832 |
while ((ch = console_readchar( |
1833 |
MAIN_CONSOLE)) < 0) |
1834 |
usleep(1); |
1835 |
/* Do nothing for these keys. */ |
1836 |
break; |
1837 |
case '3': /* 3~ = delete */ |
1838 |
/* TODO: Ugly hack, but might work. */ |
1839 |
while ((ch = console_readchar( |
1840 |
MAIN_CONSOLE)) < 0) |
1841 |
usleep(1); |
1842 |
console_makeavail(MAIN_CONSOLE, '\b'); |
1843 |
break; |
1844 |
case 'A': /* Up. */ |
1845 |
/* Up cursor ==> CTRL-P */ |
1846 |
console_makeavail(MAIN_CONSOLE, 16); |
1847 |
break; |
1848 |
case 'B': /* Down. */ |
1849 |
/* Down cursor ==> CTRL-N */ |
1850 |
console_makeavail(MAIN_CONSOLE, 14); |
1851 |
break; |
1852 |
case 'C': |
1853 |
/* Right cursor ==> CTRL-F */ |
1854 |
console_makeavail(MAIN_CONSOLE, 6); |
1855 |
break; |
1856 |
case 'D': /* Left */ |
1857 |
/* Left cursor ==> CTRL-B */ |
1858 |
console_makeavail(MAIN_CONSOLE, 2); |
1859 |
break; |
1860 |
case 'F': |
1861 |
/* End ==> CTRL-E */ |
1862 |
console_makeavail(MAIN_CONSOLE, 5); |
1863 |
break; |
1864 |
case 'H': |
1865 |
/* Home ==> CTRL-A */ |
1866 |
console_makeavail(MAIN_CONSOLE, 1); |
1867 |
break; |
1868 |
} |
1869 |
} |
1870 |
} |
1871 |
|
1872 |
fflush(stdout); |
1873 |
} |
1874 |
|
1875 |
return cmd; |
1876 |
} |
1877 |
|
1878 |
|
1879 |
/* |
1880 |
* debugger(): |
1881 |
* |
1882 |
* This is a loop, which reads a command from the terminal, and executes it. |
1883 |
*/ |
1884 |
void debugger(void) |
1885 |
{ |
1886 |
int i, n, i_match, matchlen, cmd_len; |
1887 |
char *cmd; |
1888 |
|
1889 |
if (n_steps_left_before_interaction > 0) { |
1890 |
n_steps_left_before_interaction --; |
1891 |
return; |
1892 |
} |
1893 |
|
1894 |
exit_debugger = 0; |
1895 |
|
1896 |
while (!exit_debugger) { |
1897 |
/* Read a line from the terminal: */ |
1898 |
cmd = debugger_readline(); |
1899 |
cmd_len = strlen(cmd); |
1900 |
|
1901 |
/* Remove spaces: */ |
1902 |
while (cmd_len > 0 && cmd[0]==' ') |
1903 |
memmove(cmd, cmd+1, cmd_len --); |
1904 |
while (cmd_len > 0 && cmd[cmd_len-1] == ' ') |
1905 |
cmd[(cmd_len--)-1] = '\0'; |
1906 |
|
1907 |
/* No command? Then try reading another line. */ |
1908 |
if (cmd_len == 0) { |
1909 |
/* Special case for repeated commands: */ |
1910 |
if (repeat_cmd[0] != '\0') |
1911 |
strcpy(cmd, repeat_cmd); |
1912 |
else |
1913 |
continue; |
1914 |
} else { |
1915 |
last_cmd_index ++; |
1916 |
if (last_cmd_index >= N_PREVIOUS_CMDS) |
1917 |
last_cmd_index = 0; |
1918 |
|
1919 |
repeat_cmd[0] = '\0'; |
1920 |
} |
1921 |
|
1922 |
/* |
1923 |
* Is there a '=' on the command line? Then try to do an |
1924 |
* assignment. (Only if there is just one word, followed |
1925 |
* by the '=' sign. This makes it possible to use commands |
1926 |
* such as "device add name addr=xyz".) |
1927 |
*/ |
1928 |
if (strchr(cmd, '=') != NULL) { |
1929 |
/* Count the nr of words: */ |
1930 |
int nw = 0, inword = 0; |
1931 |
char *p = cmd; |
1932 |
while (*p) { |
1933 |
if (*p == '=') |
1934 |
break; |
1935 |
if (*p != ' ') { |
1936 |
if (!inword) |
1937 |
nw ++; |
1938 |
inword = 1; |
1939 |
} else |
1940 |
inword = 0; |
1941 |
p++; |
1942 |
} |
1943 |
|
1944 |
if (nw == 1) { |
1945 |
debugger_assignment(debugger_machine, cmd); |
1946 |
continue; |
1947 |
} |
1948 |
} |
1949 |
|
1950 |
i = 0; |
1951 |
while (cmds[i].name != NULL) |
1952 |
cmds[i++].tmp_flag = 0; |
1953 |
|
1954 |
/* How many chars in cmd to match against: */ |
1955 |
matchlen = 0; |
1956 |
while (isalpha((int)cmd[matchlen])) |
1957 |
matchlen ++; |
1958 |
|
1959 |
/* Check for a command name match: */ |
1960 |
n = i = i_match = 0; |
1961 |
while (cmds[i].name != NULL) { |
1962 |
if (strncasecmp(cmds[i].name, cmd, matchlen) == 0) { |
1963 |
cmds[i].tmp_flag = 1; |
1964 |
i_match = i; |
1965 |
n++; |
1966 |
} |
1967 |
i++; |
1968 |
} |
1969 |
|
1970 |
/* No match? */ |
1971 |
if (n == 0) { |
1972 |
printf("Unknown command '%s'. " |
1973 |
"Type 'help' for help.\n", cmd); |
1974 |
continue; |
1975 |
} |
1976 |
|
1977 |
/* More than one match? */ |
1978 |
if (n > 1) { |
1979 |
printf("Ambiguous command '%s': ", cmd); |
1980 |
i = 0; |
1981 |
while (cmds[i].name != NULL) { |
1982 |
if (cmds[i].tmp_flag) |
1983 |
printf(" %s", cmds[i].name); |
1984 |
i++; |
1985 |
} |
1986 |
printf("\n"); |
1987 |
continue; |
1988 |
} |
1989 |
|
1990 |
/* Exactly one match: */ |
1991 |
if (cmds[i_match].f != NULL) { |
1992 |
char *p = cmd + matchlen; |
1993 |
/* Remove leading whitespace from the args... */ |
1994 |
while (*p != '\0' && *p == ' ') |
1995 |
p++; |
1996 |
|
1997 |
/* ... and run the command: */ |
1998 |
cmds[i_match].f(debugger_machine, p); |
1999 |
} else |
2000 |
printf("FATAL ERROR: internal error in debugger.c:" |
2001 |
" no handler for this command?\n"); |
2002 |
|
2003 |
/* Special hack for the "step" command: */ |
2004 |
if (exit_debugger == -1) |
2005 |
return; |
2006 |
} |
2007 |
|
2008 |
single_step = 0; |
2009 |
debugger_machine->instruction_trace = old_instruction_trace; |
2010 |
debugger_machine->show_trace_tree = old_show_trace_tree; |
2011 |
quiet_mode = old_quiet_mode; |
2012 |
} |
2013 |
|
2014 |
|
2015 |
/* |
2016 |
* debugger_reset(): |
2017 |
* |
2018 |
* This function should be called before calling debugger(), when it is |
2019 |
* absolutely necessary that debugger() is interactive. Otherwise, it might |
2020 |
* return without doing anything, such as when single-stepping multiple |
2021 |
* instructions at a time. |
2022 |
*/ |
2023 |
void debugger_reset(void) |
2024 |
{ |
2025 |
n_steps_left_before_interaction = 0; |
2026 |
} |
2027 |
|
2028 |
|
2029 |
/* |
2030 |
* debugger_init(): |
2031 |
* |
2032 |
* Must be called before any other debugger function is used. |
2033 |
*/ |
2034 |
void debugger_init(struct emul **emuls, int n_emuls) |
2035 |
{ |
2036 |
int i; |
2037 |
|
2038 |
debugger_n_emuls = n_emuls; |
2039 |
debugger_emuls = emuls; |
2040 |
|
2041 |
if (n_emuls < 1) { |
2042 |
fprintf(stderr, "\nERROR: No emuls (?)\n"); |
2043 |
exit(1); |
2044 |
} |
2045 |
|
2046 |
debugger_emul = emuls[0]; |
2047 |
if (emuls[0]->n_machines < 1) { |
2048 |
fprintf(stderr, "\nERROR: No machines in emuls[0], " |
2049 |
"cannot handle this situation yet.\n\n"); |
2050 |
exit(1); |
2051 |
} |
2052 |
|
2053 |
debugger_machine = emuls[0]->machines[0]; |
2054 |
|
2055 |
for (i=0; i<N_PREVIOUS_CMDS; i++) { |
2056 |
last_cmd[i] = malloc(MAX_CMD_LEN + 1); |
2057 |
if (last_cmd[i] == NULL) { |
2058 |
fprintf(stderr, "debugger_init(): out of memory\n"); |
2059 |
exit(1); |
2060 |
} |
2061 |
last_cmd[i][0] = '\0'; |
2062 |
} |
2063 |
|
2064 |
last_cmd_index = 0; |
2065 |
repeat_cmd[0] = '\0'; |
2066 |
} |
2067 |
|