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/* |
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* Copyright (C) 2003-2007 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: emul.c,v 1.302 2007/08/29 20:36:49 debug Exp $ |
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* |
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* Emulation startup and misc. routines. |
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*/ |
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|
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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 <limits.h> |
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#include <stdarg.h> |
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#include <string.h> |
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#include <unistd.h> |
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|
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#include "arcbios.h" |
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#include "cpu.h" |
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#include "emul.h" |
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#include "console.h" |
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#include "debugger.h" |
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#include "device.h" |
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#include "diskimage.h" |
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#include "exec_elf.h" |
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#include "machine.h" |
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#include "memory.h" |
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#include "mips_cpu_types.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 "timer.h" |
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#include "useremul.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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|
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extern int verbose; |
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extern int quiet_mode; |
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extern int force_debugger_at_exit; |
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extern int single_step; |
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extern int old_show_trace_tree; |
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extern int old_instruction_trace; |
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extern int old_quiet_mode; |
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extern int quiet_mode; |
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|
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|
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/* |
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* add_breakpoints(): |
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* |
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* Take the strings breakpoint_string[] and convert to addresses |
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* (and store them in breakpoint_addr[]). |
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* |
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* TODO: This function should be moved elsewhere. |
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*/ |
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static void add_breakpoints(struct machine *m) |
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{ |
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int i; |
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int string_flag; |
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uint64_t dp; |
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|
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for (i=0; i<m->breakpoints.n; i++) { |
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string_flag = 0; |
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dp = strtoull(m->breakpoints.string[i], NULL, 0); |
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|
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/* |
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* If conversion resulted in 0, then perhaps it is a |
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* symbol: |
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*/ |
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if (dp == 0) { |
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uint64_t addr; |
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int res = get_symbol_addr(&m->symbol_context, |
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m->breakpoints.string[i], &addr); |
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if (!res) { |
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fprintf(stderr, |
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"ERROR! Breakpoint '%s' could not be" |
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" parsed\n", |
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m->breakpoints.string[i]); |
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exit(1); |
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} else { |
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dp = addr; |
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string_flag = 1; |
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} |
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} |
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|
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/* |
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* TODO: It would be nice if things like symbolname+0x1234 |
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* were automatically converted into the correct address. |
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*/ |
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|
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if (m->arch == ARCH_MIPS) { |
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if ((dp >> 32) == 0 && ((dp >> 31) & 1)) |
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dp |= 0xffffffff00000000ULL; |
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} |
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|
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m->breakpoints.addr[i] = dp; |
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|
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debug("breakpoint %i: 0x%"PRIx64, i, dp); |
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if (string_flag) |
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debug(" (%s)", m->breakpoints.string[i]); |
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debug("\n"); |
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} |
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} |
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|
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|
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/* |
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* fix_console(): |
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*/ |
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static void fix_console(void) |
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{ |
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console_deinit_main(); |
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} |
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|
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|
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/* |
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* emul_new(): |
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* |
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* Returns a reasonably initialized struct emul. |
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*/ |
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struct emul *emul_new(char *name) |
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{ |
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struct emul *e; |
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|
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CHECK_ALLOCATION(e = malloc(sizeof(struct emul))); |
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memset(e, 0, sizeof(struct emul)); |
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|
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e->settings = settings_new(); |
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|
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settings_add(e->settings, "n_machines", 0, |
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SETTINGS_TYPE_INT, SETTINGS_FORMAT_DECIMAL, |
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(void *) &e->n_machines); |
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|
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/* TODO: More settings? */ |
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|
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/* Sane default values: */ |
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e->n_machines = 0; |
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e->next_serial_nr = 1; |
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|
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if (name != NULL) { |
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CHECK_ALLOCATION(e->name = strdup(name)); |
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settings_add(e->settings, "name", 0, |
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SETTINGS_TYPE_STRING, SETTINGS_FORMAT_STRING, |
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(void *) &e->name); |
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} |
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|
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return e; |
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} |
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|
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|
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/* |
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* emul_destroy(): |
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* |
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* Destroys a previously created emul object. |
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*/ |
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void emul_destroy(struct emul *emul) |
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{ |
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int i; |
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|
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if (emul->name != NULL) { |
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settings_remove(emul->settings, "name"); |
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free(emul->name); |
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} |
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|
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for (i=0; i<emul->n_machines; i++) |
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machine_destroy(emul->machines[i]); |
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|
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if (emul->machines != NULL) |
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free(emul->machines); |
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|
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/* Remove any remaining level-1 settings: */ |
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settings_remove_all(emul->settings); |
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settings_destroy(emul->settings); |
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|
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free(emul); |
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} |
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|
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|
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/* |
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* emul_add_machine(): |
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* |
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* Calls machine_new(), adds the new machine into the emul struct, and |
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* returns a pointer to the new machine. |
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* |
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* This function should be used instead of manually calling machine_new(). |
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*/ |
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struct machine *emul_add_machine(struct emul *e, char *name) |
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{ |
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struct machine *m; |
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char tmpstr[20]; |
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int i; |
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|
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m = machine_new(name, e, e->n_machines); |
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m->serial_nr = (e->next_serial_nr ++); |
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|
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i = e->n_machines ++; |
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|
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CHECK_ALLOCATION(e->machines = realloc(e->machines, |
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sizeof(struct machine *) * e->n_machines)); |
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|
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e->machines[i] = m; |
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|
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snprintf(tmpstr, sizeof(tmpstr), "machine[%i]", i); |
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settings_add(e->settings, tmpstr, 1, SETTINGS_TYPE_SUBSETTINGS, 0, |
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e->machines[i]->settings); |
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|
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return m; |
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} |
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|
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|
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/* |
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* add_arc_components(): |
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* |
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* This function adds ARCBIOS memory descriptors for the loaded program, |
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* and ARCBIOS components for SCSI devices. |
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*/ |
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static void add_arc_components(struct machine *m) |
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{ |
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struct cpu *cpu = m->cpus[m->bootstrap_cpu]; |
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uint64_t start = cpu->pc & 0x1fffffff; |
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uint64_t len = 0xc00000 - start; |
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struct diskimage *d; |
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uint64_t scsicontroller, scsidevice, scsidisk; |
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|
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if ((cpu->pc >> 60) != 0xf) { |
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start = cpu->pc & 0xffffffffffULL; |
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len = 0xc00000 - start; |
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} |
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|
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len += 1048576 * m->memory_offset_in_mb; |
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|
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/* |
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* NOTE/TODO: magic 12MB end of load program area |
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* |
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* Hm. This breaks the old FreeBSD/MIPS snapshots... |
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*/ |
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#if 0 |
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arcbios_add_memory_descriptor(cpu, |
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0x60000 + m->memory_offset_in_mb * 1048576, |
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start-0x60000 - m->memory_offset_in_mb * 1048576, |
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ARCBIOS_MEM_FreeMemory); |
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#endif |
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arcbios_add_memory_descriptor(cpu, |
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start, len, ARCBIOS_MEM_LoadedProgram); |
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|
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scsicontroller = arcbios_get_scsicontroller(m); |
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if (scsicontroller == 0) |
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return; |
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|
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/* TODO: The device 'name' should defined be somewhere else. */ |
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|
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d = m->first_diskimage; |
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while (d != NULL) { |
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if (d->type == DISKIMAGE_SCSI) { |
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int a, b, flags = COMPONENT_FLAG_Input; |
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char component_string[100]; |
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char *name = "DEC RZ58 (C) DEC2000"; |
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|
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/* Read-write, or read-only? */ |
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if (d->writable) |
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flags |= COMPONENT_FLAG_Output; |
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else |
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flags |= COMPONENT_FLAG_ReadOnly; |
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|
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a = COMPONENT_TYPE_DiskController; |
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b = COMPONENT_TYPE_DiskPeripheral; |
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|
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if (d->is_a_cdrom) { |
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flags |= COMPONENT_FLAG_Removable; |
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a = COMPONENT_TYPE_CDROMController; |
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b = COMPONENT_TYPE_FloppyDiskPeripheral; |
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name = "NEC CD-ROM CDR-210P 1.0 "; |
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} |
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|
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scsidevice = arcbios_addchild_manual(cpu, |
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COMPONENT_CLASS_ControllerClass, |
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a, flags, 1, 2, d->id, 0xffffffff, |
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name, scsicontroller, NULL, 0); |
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|
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scsidisk = arcbios_addchild_manual(cpu, |
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COMPONENT_CLASS_PeripheralClass, |
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b, flags, 1, 2, 0, 0xffffffff, NULL, |
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scsidevice, NULL, 0); |
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|
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/* |
310 |
* Add device string to component address mappings: |
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* "scsi(0)disk(0)rdisk(0)partition(0)" |
312 |
*/ |
313 |
|
314 |
if (d->is_a_cdrom) { |
315 |
snprintf(component_string, |
316 |
sizeof(component_string), |
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"scsi(0)cdrom(%i)", d->id); |
318 |
arcbios_add_string_to_component(m, |
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component_string, scsidevice); |
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|
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snprintf(component_string, |
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sizeof(component_string), |
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"scsi(0)cdrom(%i)fdisk(0)", d->id); |
324 |
arcbios_add_string_to_component(m, |
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component_string, scsidisk); |
326 |
} else { |
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snprintf(component_string, |
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sizeof(component_string), |
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"scsi(0)disk(%i)", d->id); |
330 |
arcbios_add_string_to_component(m, |
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component_string, scsidevice); |
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|
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snprintf(component_string, |
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sizeof(component_string), |
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"scsi(0)disk(%i)rdisk(0)", d->id); |
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arcbios_add_string_to_component(m, |
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component_string, scsidisk); |
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} |
339 |
} |
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|
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d = d->next; |
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} |
343 |
} |
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|
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|
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/* |
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* emul_machine_setup(): |
348 |
* |
349 |
* o) Initialize the hardware (RAM, devices, CPUs, ...) which |
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* will be emulated in this machine. |
351 |
* |
352 |
* o) Load ROM code and/or other programs into emulated memory. |
353 |
* |
354 |
* o) Special hacks needed after programs have been loaded. |
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*/ |
356 |
void emul_machine_setup(struct machine *m, int n_load, char **load_names, |
357 |
int n_devices, char **device_names) |
358 |
{ |
359 |
struct cpu *cpu; |
360 |
int i, iadd = DEBUG_INDENTATION; |
361 |
uint64_t memory_amount, entrypoint = 0, gp = 0, toc = 0; |
362 |
int byte_order; |
363 |
|
364 |
if (m->name != NULL) |
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debug("machine \"%s\":\n", m->name); |
366 |
else |
367 |
debug("machine:\n"); |
368 |
|
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debug_indentation(iadd); |
370 |
|
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/* For userland-only, this decides which ARCH/cpu_name to use: */ |
372 |
if (m->machine_type == MACHINE_USERLAND && m->userland_emul != NULL) { |
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useremul_name_to_useremul(NULL, m->userland_emul, |
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&m->arch, &m->machine_name, &m->cpu_name); |
375 |
if (m->arch == ARCH_NOARCH) { |
376 |
printf("Unsupported userland emulation mode.\n"); |
377 |
exit(1); |
378 |
} |
379 |
} |
380 |
|
381 |
if (m->machine_type == MACHINE_NONE) { |
382 |
fatal("No machine type specified?\n"); |
383 |
exit(1); |
384 |
} |
385 |
|
386 |
m->cpu_family = cpu_family_ptr_by_number(m->arch); |
387 |
|
388 |
if (m->arch == ARCH_ALPHA) |
389 |
m->arch_pagesize = 8192; |
390 |
|
391 |
machine_memsize_fix(m); |
392 |
|
393 |
/* |
394 |
* Create the system's memory: |
395 |
* |
396 |
* (Don't print the amount for userland-only emulation; the |
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* size doesn't matter.) |
398 |
*/ |
399 |
if (m->machine_type != MACHINE_USERLAND) |
400 |
debug("memory: %i MB", m->physical_ram_in_mb); |
401 |
memory_amount = (uint64_t)m->physical_ram_in_mb * 1048576; |
402 |
if (m->memory_offset_in_mb > 0) { |
403 |
/* |
404 |
* A special hack is used for some SGI models, |
405 |
* where memory is offset by 128MB to leave room for |
406 |
* EISA space and other things. |
407 |
*/ |
408 |
debug(" (offset by %iMB)", m->memory_offset_in_mb); |
409 |
memory_amount += 1048576 * m->memory_offset_in_mb; |
410 |
} |
411 |
m->memory = memory_new(memory_amount, m->arch); |
412 |
if (m->machine_type != MACHINE_USERLAND) |
413 |
debug("\n"); |
414 |
|
415 |
/* Create CPUs: */ |
416 |
if (m->cpu_name == NULL) |
417 |
machine_default_cputype(m); |
418 |
if (m->ncpus == 0) { |
419 |
/* TODO: This should be moved elsewhere... */ |
420 |
if (m->machine_type == MACHINE_BEBOX) |
421 |
m->ncpus = 2; |
422 |
else |
423 |
m->ncpus = 1; |
424 |
} |
425 |
|
426 |
CHECK_ALLOCATION(m->cpus = malloc(sizeof(struct cpu *) * m->ncpus)); |
427 |
memset(m->cpus, 0, sizeof(struct cpu *) * m->ncpus); |
428 |
|
429 |
debug("cpu0"); |
430 |
if (m->ncpus > 1) |
431 |
debug(" .. cpu%i", m->ncpus - 1); |
432 |
debug(": "); |
433 |
for (i=0; i<m->ncpus; i++) { |
434 |
m->cpus[i] = cpu_new(m->memory, m, i, m->cpu_name); |
435 |
if (m->cpus[i] == NULL) { |
436 |
fprintf(stderr, "Unable to create CPU object. " |
437 |
"Aborting."); |
438 |
exit(1); |
439 |
} |
440 |
} |
441 |
debug("\n"); |
442 |
|
443 |
if (m->use_random_bootstrap_cpu) |
444 |
m->bootstrap_cpu = random() % m->ncpus; |
445 |
else |
446 |
m->bootstrap_cpu = 0; |
447 |
|
448 |
cpu = m->cpus[m->bootstrap_cpu]; |
449 |
|
450 |
/* Set cpu->useremul_syscall, and use userland_memory_rw: */ |
451 |
if (m->userland_emul != NULL) { |
452 |
useremul_name_to_useremul(cpu, |
453 |
m->userland_emul, NULL, NULL, NULL); |
454 |
|
455 |
switch (m->arch) { |
456 |
|
457 |
case ARCH_ALPHA: |
458 |
cpu->memory_rw = alpha_userland_memory_rw; |
459 |
break; |
460 |
|
461 |
default: |
462 |
cpu->memory_rw = userland_memory_rw; |
463 |
} |
464 |
} |
465 |
|
466 |
if (m->x11_md.in_use) |
467 |
x11_init(m); |
468 |
|
469 |
/* Fill memory with random bytes: */ |
470 |
if (m->random_mem_contents) { |
471 |
for (i=0; i<m->physical_ram_in_mb * 1048576; i+=256) { |
472 |
unsigned char data[256]; |
473 |
unsigned int j; |
474 |
for (j=0; j<sizeof(data); j++) |
475 |
data[j] = random() & 255; |
476 |
cpu->memory_rw(cpu, m->memory, i, data, sizeof(data), |
477 |
MEM_WRITE, CACHE_NONE | NO_EXCEPTIONS | PHYSICAL); |
478 |
} |
479 |
} |
480 |
|
481 |
if (m->userland_emul != NULL) { |
482 |
/* |
483 |
* For userland-only emulation, no machine emulation |
484 |
* is needed. |
485 |
*/ |
486 |
} else { |
487 |
for (i=0; i<n_devices; i++) |
488 |
device_add(m, device_names[i]); |
489 |
|
490 |
machine_setup(m); |
491 |
} |
492 |
|
493 |
diskimage_dump_info(m); |
494 |
console_debug_dump(m); |
495 |
|
496 |
/* Load files (ROM code, boot code, ...) into memory: */ |
497 |
if (n_load == 0) { |
498 |
if (m->first_diskimage != NULL) { |
499 |
if (!load_bootblock(m, cpu, &n_load, &load_names)) { |
500 |
fprintf(stderr, "\nNo executable files were" |
501 |
" specified, and booting directly from disk" |
502 |
" failed.\n"); |
503 |
exit(1); |
504 |
} |
505 |
} else { |
506 |
fprintf(stderr, "No executable file(s) loaded, and " |
507 |
"we are not booting directly from a disk image." |
508 |
"\nAborting.\n"); |
509 |
exit(1); |
510 |
} |
511 |
} |
512 |
|
513 |
while (n_load > 0) { |
514 |
FILE *tmp_f; |
515 |
char *name_to_load = *load_names; |
516 |
int remove_after_load = 0; |
517 |
|
518 |
/* Special hack for removing temporary files: */ |
519 |
if (name_to_load[0] == 8) { |
520 |
name_to_load ++; |
521 |
remove_after_load = 1; |
522 |
} |
523 |
|
524 |
/* |
525 |
* gzipped files are automagically gunzipped: |
526 |
* NOTE/TODO: This isn't secure. system() is used. |
527 |
*/ |
528 |
tmp_f = fopen(name_to_load, "r"); |
529 |
if (tmp_f != NULL) { |
530 |
unsigned char buf[2]; /* gzip header */ |
531 |
memset(buf, 0, sizeof(buf)); |
532 |
fread(buf, 1, sizeof(buf), tmp_f); |
533 |
if (buf[0]==0x1f && buf[1]==0x8b) { |
534 |
size_t zzlen = strlen(name_to_load)*2 + 100; |
535 |
char *zz; |
536 |
|
537 |
CHECK_ALLOCATION(zz = malloc(zzlen)); |
538 |
debug("gunziping %s\n", name_to_load); |
539 |
|
540 |
/* |
541 |
* gzip header found. If this was a file |
542 |
* extracted from, say, a CDROM image, then it |
543 |
* already has a temporary name. Otherwise we |
544 |
* have to gunzip into a temporary file. |
545 |
*/ |
546 |
if (remove_after_load) { |
547 |
snprintf(zz, zzlen, "mv %s %s.gz", |
548 |
name_to_load, name_to_load); |
549 |
system(zz); |
550 |
snprintf(zz, zzlen, "gunzip %s.gz", |
551 |
name_to_load); |
552 |
system(zz); |
553 |
} else { |
554 |
/* gunzip into new temp file: */ |
555 |
int tmpfile_handle; |
556 |
char *new_temp_name; |
557 |
char *tmpdir = getenv("TMPDIR"); |
558 |
|
559 |
if (tmpdir == NULL) |
560 |
tmpdir = DEFAULT_TMP_DIR; |
561 |
|
562 |
CHECK_ALLOCATION(new_temp_name = |
563 |
malloc(300)); |
564 |
snprintf(new_temp_name, 300, |
565 |
"%s/gxemul.XXXXXXXXXXXX", tmpdir); |
566 |
|
567 |
tmpfile_handle = mkstemp(new_temp_name); |
568 |
close(tmpfile_handle); |
569 |
snprintf(zz, zzlen, "gunzip -c '%s' > " |
570 |
"%s", name_to_load, new_temp_name); |
571 |
system(zz); |
572 |
name_to_load = new_temp_name; |
573 |
remove_after_load = 1; |
574 |
} |
575 |
free(zz); |
576 |
} |
577 |
fclose(tmp_f); |
578 |
} |
579 |
|
580 |
byte_order = NO_BYTE_ORDER_OVERRIDE; |
581 |
|
582 |
/* |
583 |
* Load the file: :-) |
584 |
*/ |
585 |
file_load(m, m->memory, name_to_load, &entrypoint, |
586 |
m->arch, &gp, &byte_order, &toc); |
587 |
|
588 |
if (remove_after_load) { |
589 |
debug("removing %s\n", name_to_load); |
590 |
unlink(name_to_load); |
591 |
} |
592 |
|
593 |
if (byte_order != NO_BYTE_ORDER_OVERRIDE) |
594 |
cpu->byte_order = byte_order; |
595 |
|
596 |
cpu->pc = entrypoint; |
597 |
|
598 |
switch (m->arch) { |
599 |
|
600 |
case ARCH_ALPHA: |
601 |
/* For position-independent code: */ |
602 |
cpu->cd.alpha.r[ALPHA_T12] = cpu->pc; |
603 |
break; |
604 |
|
605 |
case ARCH_ARM: |
606 |
if (cpu->pc & 3) { |
607 |
fatal("ARM: lowest bits of pc set: TODO\n"); |
608 |
exit(1); |
609 |
} |
610 |
cpu->pc &= 0xfffffffc; |
611 |
break; |
612 |
|
613 |
case ARCH_M32R: |
614 |
if (cpu->pc & 3) { |
615 |
fatal("M32R: lowest bits of pc set: TODO\n"); |
616 |
exit(1); |
617 |
} |
618 |
cpu->pc &= 0xfffffffc; |
619 |
break; |
620 |
|
621 |
case ARCH_M88K: |
622 |
if (cpu->pc & 3) { |
623 |
fatal("M88K: lowest bits of pc set: TODO\n"); |
624 |
exit(1); |
625 |
} |
626 |
cpu->pc &= 0xfffffffc; |
627 |
break; |
628 |
|
629 |
case ARCH_MIPS: |
630 |
if ((cpu->pc >> 32) == 0 && (cpu->pc & 0x80000000ULL)) |
631 |
cpu->pc |= 0xffffffff00000000ULL; |
632 |
|
633 |
cpu->cd.mips.gpr[MIPS_GPR_GP] = gp; |
634 |
|
635 |
if ((cpu->cd.mips.gpr[MIPS_GPR_GP] >> 32) == 0 && |
636 |
(cpu->cd.mips.gpr[MIPS_GPR_GP] & 0x80000000ULL)) |
637 |
cpu->cd.mips.gpr[MIPS_GPR_GP] |= |
638 |
0xffffffff00000000ULL; |
639 |
break; |
640 |
|
641 |
case ARCH_PPC: |
642 |
/* See http://www.linuxbase.org/spec/ELF/ppc64/ |
643 |
spec/x458.html for more info. */ |
644 |
cpu->cd.ppc.gpr[2] = toc; |
645 |
/* TODO */ |
646 |
if (cpu->cd.ppc.bits == 32) |
647 |
cpu->pc &= 0xffffffffULL; |
648 |
break; |
649 |
|
650 |
case ARCH_SH: |
651 |
if (cpu->cd.sh.cpu_type.bits == 32) |
652 |
cpu->pc &= 0xffffffffULL; |
653 |
cpu->pc &= ~1; |
654 |
break; |
655 |
|
656 |
case ARCH_SPARC: |
657 |
break; |
658 |
|
659 |
default: |
660 |
fatal("emul_machine_setup(): Internal error: " |
661 |
"Unimplemented arch %i\n", m->arch); |
662 |
exit(1); |
663 |
} |
664 |
|
665 |
/* |
666 |
* For userland emulation, the remaining items |
667 |
* on the command line will be passed as parameters |
668 |
* to the emulated program, and will not be treated |
669 |
* as filenames to load into the emulator. |
670 |
* The program's name will be in load_names[0], and the |
671 |
* rest of the parameters in load_names[1] and up. |
672 |
*/ |
673 |
if (m->userland_emul != NULL) |
674 |
break; |
675 |
|
676 |
n_load --; |
677 |
load_names ++; |
678 |
} |
679 |
|
680 |
if (m->byte_order_override != NO_BYTE_ORDER_OVERRIDE) |
681 |
cpu->byte_order = m->byte_order_override; |
682 |
|
683 |
/* Same byte order and entrypoint for all CPUs: */ |
684 |
for (i=0; i<m->ncpus; i++) |
685 |
if (i != m->bootstrap_cpu) { |
686 |
m->cpus[i]->byte_order = cpu->byte_order; |
687 |
m->cpus[i]->pc = cpu->pc; |
688 |
} |
689 |
|
690 |
if (m->userland_emul != NULL) |
691 |
useremul_setup(cpu, n_load, load_names); |
692 |
|
693 |
/* Startup the bootstrap CPU: */ |
694 |
cpu->running = 1; |
695 |
|
696 |
/* ... or pause all CPUs, if start_paused is set: */ |
697 |
if (m->start_paused) { |
698 |
for (i=0; i<m->ncpus; i++) |
699 |
m->cpus[i]->running = 0; |
700 |
} |
701 |
|
702 |
/* Parse and add breakpoints: */ |
703 |
add_breakpoints(m); |
704 |
|
705 |
/* TODO: This is MIPS-specific! */ |
706 |
if (m->machine_type == MACHINE_PMAX && |
707 |
cpu->cd.mips.cpu_type.mmu_model == MMU3K) |
708 |
add_symbol_name(&m->symbol_context, |
709 |
0x9fff0000, 0x10000, "r2k3k_cache", 0, 0); |
710 |
|
711 |
symbol_recalc_sizes(&m->symbol_context); |
712 |
|
713 |
/* Special hack for ARC/SGI emulation: */ |
714 |
if ((m->machine_type == MACHINE_ARC || |
715 |
m->machine_type == MACHINE_SGI) && m->prom_emulation) |
716 |
add_arc_components(m); |
717 |
|
718 |
debug("cpu%i: starting at ", m->bootstrap_cpu); |
719 |
|
720 |
switch (m->arch) { |
721 |
|
722 |
case ARCH_MIPS: |
723 |
if (cpu->is_32bit) { |
724 |
debug("0x%08"PRIx32, (uint32_t) |
725 |
m->cpus[m->bootstrap_cpu]->pc); |
726 |
if (cpu->cd.mips.gpr[MIPS_GPR_GP] != 0) |
727 |
debug(" (gp=0x%08"PRIx32")", (uint32_t) |
728 |
m->cpus[m->bootstrap_cpu]->cd.mips.gpr[ |
729 |
MIPS_GPR_GP]); |
730 |
} else { |
731 |
debug("0x%016"PRIx64, (uint64_t) |
732 |
m->cpus[m->bootstrap_cpu]->pc); |
733 |
if (cpu->cd.mips.gpr[MIPS_GPR_GP] != 0) |
734 |
debug(" (gp=0x%016"PRIx64")", (uint64_t) |
735 |
cpu->cd.mips.gpr[MIPS_GPR_GP]); |
736 |
} |
737 |
break; |
738 |
|
739 |
default: |
740 |
if (cpu->is_32bit) |
741 |
debug("0x%08"PRIx32, (uint32_t) cpu->pc); |
742 |
else |
743 |
debug("0x%016"PRIx64, (uint64_t) cpu->pc); |
744 |
} |
745 |
debug("\n"); |
746 |
|
747 |
debug_indentation(-iadd); |
748 |
} |
749 |
|
750 |
|
751 |
/* |
752 |
* emul_dumpinfo(): |
753 |
* |
754 |
* Dump info about all machines in an emul. |
755 |
*/ |
756 |
void emul_dumpinfo(struct emul *e) |
757 |
{ |
758 |
int i; |
759 |
|
760 |
if (e->net != NULL) |
761 |
net_dumpinfo(e->net); |
762 |
|
763 |
for (i = 0; i < e->n_machines; i++) { |
764 |
if (e->n_machines > 1) |
765 |
debug("machine %i: \"%s\"\n", i, e->machines[i]->name); |
766 |
else |
767 |
debug("machine:\n"); |
768 |
|
769 |
debug_indentation(DEBUG_INDENTATION); |
770 |
|
771 |
machine_dumpinfo(e->machines[i]); |
772 |
|
773 |
debug_indentation(-DEBUG_INDENTATION); |
774 |
} |
775 |
} |
776 |
|
777 |
|
778 |
/* |
779 |
* emul_simple_init(): |
780 |
* |
781 |
* For a normal setup: |
782 |
* |
783 |
* o) Initialize a network. |
784 |
* o) Initialize one machine. |
785 |
* |
786 |
* For a userland-only setup: |
787 |
* |
788 |
* o) Initialize a "pseudo"-machine. |
789 |
*/ |
790 |
void emul_simple_init(struct emul *emul) |
791 |
{ |
792 |
int iadd = DEBUG_INDENTATION; |
793 |
struct machine *m; |
794 |
|
795 |
if (emul->n_machines != 1) { |
796 |
fprintf(stderr, "emul_simple_init(): n_machines != 1\n"); |
797 |
exit(1); |
798 |
} |
799 |
|
800 |
m = emul->machines[0]; |
801 |
|
802 |
if (m->userland_emul == NULL) { |
803 |
debug("Simple setup...\n"); |
804 |
debug_indentation(iadd); |
805 |
|
806 |
/* Create a simple network: */ |
807 |
emul->net = net_init(emul, NET_INIT_FLAG_GATEWAY, |
808 |
NET_DEFAULT_IPV4_MASK, |
809 |
NET_DEFAULT_IPV4_LEN, |
810 |
NULL, 0, 0, NULL); |
811 |
} else { |
812 |
/* Userland pseudo-machine: */ |
813 |
debug("Syscall emulation (userland-only) setup...\n"); |
814 |
debug_indentation(iadd); |
815 |
} |
816 |
|
817 |
/* Create the machine: */ |
818 |
emul_machine_setup(m, extra_argc, extra_argv, 0, NULL); |
819 |
|
820 |
debug_indentation(-iadd); |
821 |
} |
822 |
|
823 |
|
824 |
/* |
825 |
* emul_create_from_configfile(): |
826 |
* |
827 |
* Create an emul struct by reading settings from a configuration file. |
828 |
*/ |
829 |
struct emul *emul_create_from_configfile(char *fname) |
830 |
{ |
831 |
int iadd = DEBUG_INDENTATION; |
832 |
struct emul *e = emul_new(fname); |
833 |
|
834 |
debug("Creating emulation from configfile \"%s\":\n", fname); |
835 |
debug_indentation(iadd); |
836 |
|
837 |
emul_parse_config(e, fname); |
838 |
|
839 |
debug_indentation(-iadd); |
840 |
return e; |
841 |
} |
842 |
|
843 |
|
844 |
/* |
845 |
* emul_run(): |
846 |
* |
847 |
* o) Set up things needed before running an emulation. |
848 |
* |
849 |
* o) Run instructions in all machines. |
850 |
* |
851 |
* o) De-initialize things. |
852 |
*/ |
853 |
void emul_run(struct emul *emul) |
854 |
{ |
855 |
int i = 0, j, go = 1, n, anything; |
856 |
|
857 |
atexit(fix_console); |
858 |
|
859 |
/* Initialize the interactive debugger: */ |
860 |
debugger_init(emul); |
861 |
|
862 |
/* Run any additional debugger commands before starting: */ |
863 |
if (emul->n_debugger_cmds > 0) { |
864 |
int j; |
865 |
if (i == 0) |
866 |
print_separator_line(); |
867 |
for (j = 0; j < emul->n_debugger_cmds; j ++) { |
868 |
debug("> %s\n", emul->debugger_cmds[j]); |
869 |
debugger_execute_cmd(emul->debugger_cmds[j], |
870 |
strlen(emul->debugger_cmds[j])); |
871 |
} |
872 |
} |
873 |
|
874 |
print_separator_line(); |
875 |
debug("\n"); |
876 |
|
877 |
|
878 |
/* |
879 |
* console_init_main() makes sure that the terminal is in a |
880 |
* reasonable state. |
881 |
* |
882 |
* The SIGINT handler is for CTRL-C (enter the interactive debugger). |
883 |
* |
884 |
* The SIGCONT handler is invoked whenever the user presses CTRL-Z |
885 |
* (or sends SIGSTOP) and then continues. It makes sure that the |
886 |
* terminal is in an expected state. |
887 |
*/ |
888 |
console_init_main(emul); |
889 |
|
890 |
signal(SIGINT, debugger_activate); |
891 |
signal(SIGCONT, console_sigcont); |
892 |
|
893 |
/* Not in verbose mode? Then set quiet_mode. */ |
894 |
if (!verbose) |
895 |
quiet_mode = 1; |
896 |
|
897 |
|
898 |
/* Initialize all CPUs in all machines: */ |
899 |
for (j=0; j<emul->n_machines; j++) |
900 |
cpu_run_init(emul->machines[j]); |
901 |
|
902 |
/* TODO: Generalize: */ |
903 |
if (emul->machines[0]->show_trace_tree) |
904 |
cpu_functioncall_trace(emul->machines[0]->cpus[0], |
905 |
emul->machines[0]->cpus[0]->pc); |
906 |
|
907 |
/* Start emulated clocks: */ |
908 |
timer_start(); |
909 |
|
910 |
|
911 |
/* |
912 |
* MAIN LOOP: |
913 |
* |
914 |
* Run all emulations in parallel, running instructions from each |
915 |
* cpu in each machine. |
916 |
*/ |
917 |
while (go) { |
918 |
struct cpu *bootcpu = emul->machines[0]->cpus[ |
919 |
emul->machines[0]->bootstrap_cpu]; |
920 |
|
921 |
go = 0; |
922 |
|
923 |
/* Flush X11 and serial console output every now and then: */ |
924 |
if (bootcpu->ninstrs > bootcpu->ninstrs_flush + (1<<19)) { |
925 |
x11_check_event(emul); |
926 |
console_flush(); |
927 |
bootcpu->ninstrs_flush = bootcpu->ninstrs; |
928 |
} |
929 |
|
930 |
if (bootcpu->ninstrs > bootcpu->ninstrs_show + (1<<25)) { |
931 |
bootcpu->ninstrs_since_gettimeofday += |
932 |
(bootcpu->ninstrs - bootcpu->ninstrs_show); |
933 |
cpu_show_cycles(emul->machines[0], 0); |
934 |
bootcpu->ninstrs_show = bootcpu->ninstrs; |
935 |
} |
936 |
|
937 |
if (single_step == ENTER_SINGLE_STEPPING) { |
938 |
/* TODO: Cleanup! */ |
939 |
old_instruction_trace = |
940 |
emul->machines[0]->instruction_trace; |
941 |
old_quiet_mode = quiet_mode; |
942 |
old_show_trace_tree = |
943 |
emul->machines[0]->show_trace_tree; |
944 |
emul->machines[0]->instruction_trace = 1; |
945 |
emul->machines[0]->show_trace_tree = 1; |
946 |
quiet_mode = 0; |
947 |
single_step = SINGLE_STEPPING; |
948 |
} |
949 |
|
950 |
if (single_step == SINGLE_STEPPING) |
951 |
debugger(); |
952 |
|
953 |
for (j=0; j<emul->n_machines; j++) { |
954 |
anything = machine_run(emul->machines[j]); |
955 |
if (anything) |
956 |
go = 1; |
957 |
} |
958 |
} |
959 |
|
960 |
/* Stop any running timers: */ |
961 |
timer_stop(); |
962 |
|
963 |
/* Deinitialize all CPUs in all machines: */ |
964 |
for (j=0; j<emul->n_machines; j++) |
965 |
cpu_run_deinit(emul->machines[j]); |
966 |
|
967 |
/* force_debugger_at_exit flag set? Then enter the debugger: */ |
968 |
if (force_debugger_at_exit) { |
969 |
quiet_mode = 0; |
970 |
debugger_reset(); |
971 |
debugger(); |
972 |
} |
973 |
|
974 |
/* Any machine using X11? Then wait before exiting: */ |
975 |
n = 0; |
976 |
for (j=0; j<emul->n_machines; j++) |
977 |
if (emul->machines[j]->x11_md.in_use) |
978 |
n++; |
979 |
|
980 |
if (n > 0) { |
981 |
printf("Press enter to quit.\n"); |
982 |
while (!console_charavail(MAIN_CONSOLE)) { |
983 |
x11_check_event(emul); |
984 |
usleep(10000); |
985 |
} |
986 |
console_readchar(MAIN_CONSOLE); |
987 |
} |
988 |
|
989 |
console_deinit_main(); |
990 |
} |
991 |
|