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dpavlin |
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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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dpavlin |
6 |
* $Id: emul.c,v 1.203 2005/06/03 07:39:27 debug Exp $ |
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dpavlin |
2 |
* |
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* Emulation startup and misc. routines. |
31 |
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*/ |
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#include <signal.h> |
34 |
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#include <stdio.h> |
35 |
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#include <stdlib.h> |
36 |
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#include <limits.h> |
37 |
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#include <stdarg.h> |
38 |
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#include <string.h> |
39 |
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#include <unistd.h> |
40 |
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41 |
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#include "arcbios.h" |
42 |
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#include "bintrans.h" |
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#include "cpu.h" |
44 |
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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" |
48 |
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#include "diskimage.h" |
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#include "machine.h" |
50 |
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#include "memory.h" |
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#include "mips_cpu_types.h" |
52 |
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#include "misc.h" |
53 |
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#include "net.h" |
54 |
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#include "sgi_arcbios.h" |
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#include "x11.h" |
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57 |
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58 |
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extern int force_debugger_at_exit; |
59 |
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60 |
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extern int extra_argc; |
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extern char **extra_argv; |
62 |
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63 |
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extern int verbose; |
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extern int quiet_mode; |
65 |
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66 |
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extern struct emul *debugger_emul; |
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extern struct diskimage *diskimages[]; |
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69 |
dpavlin |
6 |
static char *diskimage_types[] = DISKIMAGE_TYPES; |
70 |
dpavlin |
2 |
|
71 |
dpavlin |
6 |
|
72 |
dpavlin |
2 |
/* |
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* add_dump_points(): |
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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_dump_points(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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for (i=0; i<m->n_breakpoints; i++) { |
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string_flag = 0; |
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dp = strtoull(m->breakpoint_string[i], NULL, 0); |
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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->breakpoint_string[i], &addr); |
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if (!res) |
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fprintf(stderr, |
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"WARNING! Breakpoint '%s' could not be" |
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" parsed\n", |
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m->breakpoint_string[i]); |
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else { |
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dp = addr; |
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string_flag = 1; |
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} |
107 |
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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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if ((dp >> 32) == 0 && ((dp >> 31) & 1)) |
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dp |= 0xffffffff00000000ULL; |
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m->breakpoint_addr[i] = dp; |
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debug("breakpoint %i: 0x%016llx", i, (long long)dp); |
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if (string_flag) |
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debug(" (%s)", m->breakpoint_string[i]); |
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debug("\n"); |
122 |
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} |
123 |
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} |
124 |
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125 |
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126 |
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/* |
127 |
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* fix_console(): |
128 |
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*/ |
129 |
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static void fix_console(void) |
130 |
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{ |
131 |
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console_deinit(); |
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} |
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135 |
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/* |
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dpavlin |
6 |
* iso_load_bootblock(): |
137 |
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* |
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* Try to load a kernel from an ISO 9660 disk image. iso_type is 1 for |
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* "CD001" (standard), 2 for "CDW01" (ECMA), and 3 for "CDROM" (Sierra). |
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* |
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* TODO: This function uses too many magic offsets and so on; it should be |
142 |
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* cleaned up some day. |
143 |
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* |
144 |
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* Returns 1 on success, 0 on failure. |
145 |
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*/ |
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static int iso_load_bootblock(struct machine *m, struct cpu *cpu, |
147 |
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int disk_id, int disk_type, int iso_type, unsigned char *buf, |
148 |
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int *n_loadp, char ***load_namesp) |
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{ |
150 |
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char str[35]; |
151 |
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int filenr, i, ofs, dirlen, res = 0, res2, iadd = 4; |
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int found_dir; |
153 |
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uint64_t dirofs; |
154 |
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uint64_t fileofs, filelen; |
155 |
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unsigned char *dirbuf = NULL, *dp; |
156 |
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unsigned char *match_entry = NULL; |
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char *p, *filename_orig; |
158 |
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char *filename = strdup(cpu->machine->boot_kernel_filename); |
159 |
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unsigned char *filebuf = NULL; |
160 |
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char *tmpfilename = NULL; |
161 |
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char **new_array; |
162 |
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int tmpfile_handle; |
163 |
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164 |
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if (filename == NULL) { |
165 |
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fatal("out of memory\n"); |
166 |
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exit(1); |
167 |
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} |
168 |
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filename_orig = filename; |
169 |
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170 |
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debug("ISO9660 boot:\n"); |
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debug_indentation(iadd); |
172 |
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173 |
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/* Volume ID: */ |
174 |
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ofs = iso_type == 3? 48 : 40; |
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memcpy(str, buf + ofs, sizeof(str)); |
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str[32] = '\0'; i = 31; |
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while (i >= 0 && str[i]==' ') |
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str[i--] = '\0'; |
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if (str[0]) |
180 |
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debug("\"%s\"", str); |
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else { |
182 |
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/* System ID: */ |
183 |
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ofs = iso_type == 3? 16 : 8; |
184 |
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memcpy(str, buf + ofs, sizeof(str)); |
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str[32] = '\0'; i = 31; |
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while (i >= 0 && str[i]==' ') |
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str[i--] = '\0'; |
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if (str[0]) |
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debug("\"%s\"", str); |
190 |
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else |
191 |
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debug("(no ID)"); |
192 |
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} |
193 |
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194 |
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debug(":%s\n", filename); |
195 |
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196 |
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197 |
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/* |
198 |
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* Traverse the directory structure to find the kernel. |
199 |
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*/ |
200 |
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201 |
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dirlen = buf[0x84] + 256*buf[0x85] + 65536*buf[0x86]; |
202 |
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if (dirlen != buf[0x8b] + 256*buf[0x8a] + 65536*buf[0x89]) |
203 |
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fatal("WARNING: Root directory length mismatch?\n"); |
204 |
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205 |
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dirofs = (int64_t)(buf[0x8c] + (buf[0x8d] << 8) + (buf[0x8e] << 16) + |
206 |
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(buf[0x8f] << 24)) * 2048; |
207 |
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208 |
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/* debug("root = %i bytes at 0x%llx\n", dirlen, (long long)dirofs); */ |
209 |
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210 |
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dirbuf = malloc(dirlen); |
211 |
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if (dirbuf == NULL) { |
212 |
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fatal("out of memory in iso_load_bootblock()\n"); |
213 |
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exit(1); |
214 |
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} |
215 |
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216 |
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res2 = diskimage_access(m, disk_id, disk_type, 0, dirofs, dirbuf, |
217 |
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dirlen); |
218 |
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if (!res2) { |
219 |
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fatal("Couldn't read the disk image. Aborting.\n"); |
220 |
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goto ret; |
221 |
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} |
222 |
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223 |
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found_dir = 1; /* Assume root dir */ |
224 |
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dp = dirbuf; filenr = 1; |
225 |
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p = NULL; |
226 |
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while (dp < dirbuf + dirlen) { |
227 |
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int i, nlen = dp[0]; |
228 |
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int x = dp[2] + (dp[3] << 8) + (dp[4] << 16) + (dp[5] << 24); |
229 |
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int y = dp[6] + (dp[7] << 8); |
230 |
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char direntry[65]; |
231 |
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232 |
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dp += 8; |
233 |
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234 |
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/* |
235 |
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* As long as there is an \ or / in the filename, then we |
236 |
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* have not yet found the directory. |
237 |
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*/ |
238 |
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p = strchr(filename, '/'); |
239 |
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if (p == NULL) |
240 |
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p = strchr(filename, '\\'); |
241 |
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242 |
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/* debug("%i%s: %i, %i, \"", filenr, filenr == found_dir? |
243 |
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" [CURRENT]" : "", x, y); */ |
244 |
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for (i=0; i<nlen && i<sizeof(direntry)-1; i++) |
245 |
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if (dp[i]) { |
246 |
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direntry[i] = dp[i]; |
247 |
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/* debug("%c", dp[i]); */ |
248 |
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} else |
249 |
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break; |
250 |
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/* debug("\"\n"); */ |
251 |
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direntry[i] = '\0'; |
252 |
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253 |
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/* A directory name match? */ |
254 |
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if (p != NULL && strncasecmp(filename, direntry, nlen) == 0 |
255 |
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&& nlen == (size_t)p - (size_t)filename && found_dir == y) { |
256 |
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found_dir = filenr; |
257 |
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filename = p+1; |
258 |
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dirofs = 2048 * (int64_t)x; |
259 |
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} |
260 |
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261 |
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dp += nlen; |
262 |
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|
263 |
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/* 16-bit aligned lenght: */ |
264 |
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if (nlen & 1) |
265 |
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dp ++; |
266 |
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267 |
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filenr ++; |
268 |
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} |
269 |
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270 |
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p = strchr(filename, '/'); |
271 |
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if (p == NULL) |
272 |
|
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p = strchr(filename, '\\'); |
273 |
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|
274 |
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if (p != NULL) { |
275 |
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char *blah = filename_orig; |
276 |
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|
277 |
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fatal("could not find '%s' in /", filename); |
278 |
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279 |
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/* Print the first part of the filename: */ |
280 |
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while (blah != filename) |
281 |
|
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fatal("%c", *blah++); |
282 |
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|
283 |
|
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fatal("\n"); |
284 |
|
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goto ret; |
285 |
|
|
} |
286 |
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|
287 |
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/* debug("dirofs = 0x%llx\n", (long long)dirofs); */ |
288 |
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289 |
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/* Free the old dirbuf, and allocate a new one: */ |
290 |
|
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free(dirbuf); |
291 |
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dirbuf = malloc(512); |
292 |
|
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if (dirbuf == NULL) { |
293 |
|
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fatal("out of memory in iso_load_bootblock()\n"); |
294 |
|
|
exit(1); |
295 |
|
|
} |
296 |
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|
297 |
|
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for (;;) { |
298 |
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int len, i; |
299 |
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|
300 |
|
|
/* Too close to another sector? Then realign. */ |
301 |
|
|
if ((dirofs & 2047) + 70 > 2047) { |
302 |
|
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dirofs = (dirofs | 2047) + 1; |
303 |
|
|
/* debug("realign dirofs = 0x%llx\n", dirofs); */ |
304 |
|
|
} |
305 |
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|
306 |
|
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res2 = diskimage_access(m, disk_id, disk_type, 0, dirofs, |
307 |
|
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dirbuf, 256); |
308 |
|
|
if (!res2) { |
309 |
|
|
fatal("Couldn't read the disk image. Aborting.\n"); |
310 |
|
|
goto ret; |
311 |
|
|
} |
312 |
|
|
|
313 |
|
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dp = dirbuf; |
314 |
|
|
len = dp[0]; |
315 |
|
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if (len < 2) |
316 |
|
|
break; |
317 |
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|
318 |
|
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/* |
319 |
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* TODO: Actually parse the directory entry! |
320 |
|
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* |
321 |
|
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* Haha, this must be rewritten. |
322 |
|
|
*/ |
323 |
|
|
for (i=32; i<len; i++) { |
324 |
|
|
if (i < len - strlen(filename)) |
325 |
|
|
if (strncasecmp(filename, (char *)dp + i, |
326 |
|
|
strlen(filename)) == 0) { |
327 |
|
|
/* The filename was found somewhere |
328 |
|
|
in the directory entry. */ |
329 |
|
|
if (match_entry != NULL) { |
330 |
|
|
fatal("TODO: I'm too lazy to" |
331 |
|
|
" implement a correct " |
332 |
|
|
"directory parser right " |
333 |
|
|
"now... (BUG)\n"); |
334 |
|
|
exit(1); |
335 |
|
|
} |
336 |
|
|
match_entry = malloc(512); |
337 |
|
|
if (match_entry == NULL) { |
338 |
|
|
fatal("out of memory\n"); |
339 |
|
|
exit(1); |
340 |
|
|
} |
341 |
|
|
memcpy(match_entry, dp, 512); |
342 |
|
|
break; |
343 |
|
|
} |
344 |
|
|
} |
345 |
|
|
|
346 |
|
|
dirofs += len; |
347 |
|
|
} |
348 |
|
|
|
349 |
|
|
if (match_entry == NULL) { |
350 |
|
|
char *blah = filename_orig; |
351 |
|
|
|
352 |
|
|
fatal("could not find '%s' in /", filename); |
353 |
|
|
|
354 |
|
|
/* Print the first part of the filename: */ |
355 |
|
|
while (blah != filename) |
356 |
|
|
fatal("%c", *blah++); |
357 |
|
|
|
358 |
|
|
fatal("\n"); |
359 |
|
|
goto ret; |
360 |
|
|
} |
361 |
|
|
|
362 |
|
|
fileofs = match_entry[2] + (match_entry[3] << 8) + |
363 |
|
|
(match_entry[4] << 16) + (match_entry[5] << 24); |
364 |
|
|
filelen = match_entry[10] + (match_entry[11] << 8) + |
365 |
|
|
(match_entry[12] << 16) + (match_entry[13] << 24); |
366 |
|
|
fileofs *= 2048; |
367 |
|
|
|
368 |
|
|
/* debug("filelen=%llx fileofs=%llx\n", (long long)filelen, |
369 |
|
|
(long long)fileofs); */ |
370 |
|
|
|
371 |
|
|
filebuf = malloc(filelen); |
372 |
|
|
if (filebuf == NULL) { |
373 |
|
|
fatal("could not allocate %lli bytes to read the file" |
374 |
|
|
" from the disk image!\n", (long long)filelen); |
375 |
|
|
goto ret; |
376 |
|
|
} |
377 |
|
|
|
378 |
|
|
tmpfilename = strdup("/tmp/gxemul.XXXXXXXXXXXX"); |
379 |
|
|
|
380 |
|
|
debug("extracting %lli bytes into %s\n", |
381 |
|
|
(long long)filelen, tmpfilename); |
382 |
|
|
|
383 |
|
|
res2 = diskimage_access(m, disk_id, disk_type, 0, fileofs, filebuf, |
384 |
|
|
filelen); |
385 |
|
|
if (!res2) { |
386 |
|
|
fatal("could not read the file from the disk image!\n"); |
387 |
|
|
goto ret; |
388 |
|
|
} |
389 |
|
|
|
390 |
|
|
tmpfile_handle = mkstemp(tmpfilename); |
391 |
|
|
if (tmpfile_handle < 0) { |
392 |
|
|
fatal("could not create %s\n", tmpfilename); |
393 |
|
|
exit(1); |
394 |
|
|
} |
395 |
|
|
write(tmpfile_handle, filebuf, filelen); |
396 |
|
|
close(tmpfile_handle); |
397 |
|
|
|
398 |
|
|
/* Add the temporary filename to the load_namesp array: */ |
399 |
|
|
(*n_loadp)++; |
400 |
|
|
new_array = malloc(sizeof(char *) * (*n_loadp)); |
401 |
|
|
if (new_array == NULL) { |
402 |
|
|
fatal("out of memory\n"); |
403 |
|
|
exit(1); |
404 |
|
|
} |
405 |
|
|
memcpy(new_array, *load_namesp, sizeof(char *) * (*n_loadp)); |
406 |
|
|
*load_namesp = new_array; |
407 |
|
|
|
408 |
|
|
/* This adds a Backspace char in front of the filename; this |
409 |
|
|
is a special hack which causes the file to be removed once |
410 |
|
|
it has been loaded. */ |
411 |
|
|
tmpfilename = realloc(tmpfilename, strlen(tmpfilename) + 2); |
412 |
|
|
memmove(tmpfilename + 1, tmpfilename, strlen(tmpfilename) + 1); |
413 |
|
|
tmpfilename[0] = 8; |
414 |
|
|
|
415 |
|
|
(*load_namesp)[*n_loadp - 1] = tmpfilename; |
416 |
|
|
|
417 |
|
|
res = 1; |
418 |
|
|
|
419 |
|
|
ret: |
420 |
|
|
if (dirbuf != NULL) |
421 |
|
|
free(dirbuf); |
422 |
|
|
|
423 |
|
|
if (filebuf != NULL) |
424 |
|
|
free(filebuf); |
425 |
|
|
|
426 |
|
|
if (match_entry != NULL) |
427 |
|
|
free(match_entry); |
428 |
|
|
|
429 |
|
|
free(filename_orig); |
430 |
|
|
|
431 |
|
|
debug_indentation(-iadd); |
432 |
|
|
return res; |
433 |
|
|
} |
434 |
|
|
|
435 |
|
|
|
436 |
|
|
/* |
437 |
dpavlin |
2 |
* load_bootblock(): |
438 |
|
|
* |
439 |
|
|
* For some emulation modes, it is possible to boot from a harddisk image by |
440 |
|
|
* loading a bootblock from a specific disk offset into memory, and executing |
441 |
|
|
* that, instead of requiring a separate kernel file. It is then up to the |
442 |
|
|
* bootblock to load a kernel. |
443 |
dpavlin |
6 |
* |
444 |
|
|
* Returns 1 on success, 0 on failure. |
445 |
dpavlin |
2 |
*/ |
446 |
dpavlin |
6 |
static int load_bootblock(struct machine *m, struct cpu *cpu, |
447 |
|
|
int *n_loadp, char ***load_namesp) |
448 |
dpavlin |
2 |
{ |
449 |
dpavlin |
6 |
int boot_disk_id, boot_disk_type = 0, n_blocks, res, readofs, |
450 |
|
|
iso_type, retval = 0; |
451 |
dpavlin |
2 |
unsigned char minibuf[0x20]; |
452 |
|
|
unsigned char *bootblock_buf; |
453 |
|
|
uint64_t bootblock_offset; |
454 |
|
|
uint64_t bootblock_loadaddr, bootblock_pc; |
455 |
|
|
|
456 |
dpavlin |
6 |
boot_disk_id = diskimage_bootdev(m, &boot_disk_type); |
457 |
dpavlin |
2 |
if (boot_disk_id < 0) |
458 |
dpavlin |
6 |
return 0; |
459 |
dpavlin |
2 |
|
460 |
|
|
switch (m->machine_type) { |
461 |
|
|
case MACHINE_DEC: |
462 |
|
|
/* |
463 |
|
|
* The first few bytes of a disk contains information about |
464 |
|
|
* where the bootblock(s) are located. (These are all 32-bit |
465 |
|
|
* little-endian words.) |
466 |
|
|
* |
467 |
|
|
* Offset 0x10 = load address |
468 |
|
|
* 0x14 = initial PC value |
469 |
|
|
* 0x18 = nr of 512-byte blocks to read |
470 |
|
|
* 0x1c = offset on disk to where the bootblocks |
471 |
|
|
* are (in 512-byte units) |
472 |
|
|
* 0x20 = nr of blocks to read... |
473 |
|
|
* 0x24 = offset... |
474 |
|
|
* |
475 |
|
|
* nr of blocks to read and offset are repeated until nr of |
476 |
|
|
* blocks to read is zero. |
477 |
|
|
*/ |
478 |
dpavlin |
6 |
res = diskimage_access(m, boot_disk_id, boot_disk_type, 0, 0, |
479 |
dpavlin |
2 |
minibuf, sizeof(minibuf)); |
480 |
|
|
|
481 |
|
|
bootblock_loadaddr = minibuf[0x10] + (minibuf[0x11] << 8) |
482 |
|
|
+ (minibuf[0x12] << 16) + (minibuf[0x13] << 24); |
483 |
|
|
|
484 |
|
|
/* Convert loadaddr to uncached: */ |
485 |
|
|
if ((bootblock_loadaddr & 0xf0000000ULL) != 0x80000000 && |
486 |
|
|
(bootblock_loadaddr & 0xf0000000ULL) != 0xa0000000) |
487 |
|
|
fatal("\nWARNING! Weird load address 0x%08x.\n\n", |
488 |
|
|
(int)bootblock_loadaddr); |
489 |
|
|
bootblock_loadaddr &= 0x0fffffffULL; |
490 |
|
|
bootblock_loadaddr |= 0xffffffffa0000000ULL; |
491 |
|
|
|
492 |
|
|
bootblock_pc = minibuf[0x14] + (minibuf[0x15] << 8) |
493 |
|
|
+ (minibuf[0x16] << 16) + (minibuf[0x17] << 24); |
494 |
|
|
|
495 |
|
|
bootblock_pc &= 0x0fffffffULL; |
496 |
|
|
bootblock_pc |= 0xffffffffa0000000ULL; |
497 |
|
|
cpu->pc = bootblock_pc; |
498 |
|
|
|
499 |
|
|
debug("DEC boot: loadaddr=0x%08x, pc=0x%08x", |
500 |
|
|
(int)bootblock_loadaddr, (int)bootblock_pc); |
501 |
|
|
|
502 |
|
|
readofs = 0x18; |
503 |
|
|
|
504 |
|
|
for (;;) { |
505 |
dpavlin |
6 |
res = diskimage_access(m, boot_disk_id, boot_disk_type, |
506 |
|
|
0, readofs, minibuf, sizeof(minibuf)); |
507 |
dpavlin |
2 |
if (!res) { |
508 |
dpavlin |
6 |
fatal("Couldn't read the disk image. " |
509 |
|
|
"Aborting.\n"); |
510 |
|
|
return 0; |
511 |
dpavlin |
2 |
} |
512 |
|
|
|
513 |
|
|
n_blocks = minibuf[0] + (minibuf[1] << 8) |
514 |
|
|
+ (minibuf[2] << 16) + (minibuf[3] << 24); |
515 |
|
|
|
516 |
|
|
bootblock_offset = (minibuf[4] + (minibuf[5] << 8) |
517 |
|
|
+ (minibuf[6] << 16) + (minibuf[7] << 24)) * 512; |
518 |
|
|
|
519 |
|
|
if (n_blocks < 1) |
520 |
|
|
break; |
521 |
|
|
|
522 |
|
|
debug(readofs == 0x18? ": %i" : " + %i", n_blocks); |
523 |
|
|
|
524 |
|
|
if (n_blocks * 512 > 65536) |
525 |
|
|
fatal("\nWARNING! Unusually large bootblock " |
526 |
|
|
"(%i bytes)\n\n", n_blocks * 512); |
527 |
|
|
|
528 |
|
|
bootblock_buf = malloc(n_blocks * 512); |
529 |
|
|
if (bootblock_buf == NULL) { |
530 |
|
|
fprintf(stderr, "out of memory in " |
531 |
|
|
"load_bootblock()\n"); |
532 |
|
|
exit(1); |
533 |
|
|
} |
534 |
|
|
|
535 |
dpavlin |
6 |
res = diskimage_access(m, boot_disk_id, boot_disk_type, |
536 |
|
|
0, bootblock_offset, bootblock_buf, n_blocks * 512); |
537 |
dpavlin |
2 |
if (!res) { |
538 |
|
|
fatal("WARNING: could not load bootblocks from" |
539 |
|
|
" disk offset 0x%llx\n", |
540 |
|
|
(long long)bootblock_offset); |
541 |
|
|
} |
542 |
|
|
|
543 |
|
|
store_buf(cpu, bootblock_loadaddr, |
544 |
|
|
(char *)bootblock_buf, n_blocks * 512); |
545 |
|
|
|
546 |
|
|
bootblock_loadaddr += 512*n_blocks; |
547 |
|
|
free(bootblock_buf); |
548 |
|
|
readofs += 8; |
549 |
|
|
} |
550 |
|
|
|
551 |
|
|
debug(readofs == 0x18? ": no blocks?\n" : " blocks\n"); |
552 |
dpavlin |
6 |
return 1; |
553 |
dpavlin |
4 |
|
554 |
|
|
case MACHINE_X86: |
555 |
dpavlin |
6 |
/* TODO: "El Torito" etc? */ |
556 |
|
|
if (diskimage_is_a_cdrom(cpu->machine, boot_disk_id, |
557 |
|
|
boot_disk_type)) |
558 |
|
|
break; |
559 |
dpavlin |
4 |
|
560 |
|
|
bootblock_buf = malloc(512); |
561 |
|
|
if (bootblock_buf == NULL) { |
562 |
|
|
fprintf(stderr, "Out of memory.\n"); |
563 |
|
|
exit(1); |
564 |
|
|
} |
565 |
|
|
|
566 |
dpavlin |
6 |
debug("loading PC bootsector from %s id %i\n", |
567 |
|
|
diskimage_types[boot_disk_type], boot_disk_id); |
568 |
|
|
|
569 |
|
|
res = diskimage_access(m, boot_disk_id, boot_disk_type, 0, 0, |
570 |
dpavlin |
4 |
bootblock_buf, 512); |
571 |
|
|
if (!res) { |
572 |
dpavlin |
6 |
fatal("Couldn't read the disk image. Aborting.\n"); |
573 |
|
|
return 0; |
574 |
dpavlin |
4 |
} |
575 |
|
|
|
576 |
|
|
if (bootblock_buf[510] != 0x55 || bootblock_buf[511] != 0xaa) |
577 |
|
|
debug("WARNING! The 0x55,0xAA marker is missing! " |
578 |
|
|
"Booting anyway.\n"); |
579 |
|
|
store_buf(cpu, 0x7c00, (char *)bootblock_buf, 512); |
580 |
|
|
free(bootblock_buf); |
581 |
|
|
|
582 |
dpavlin |
6 |
return 1; |
583 |
|
|
} |
584 |
|
|
|
585 |
|
|
|
586 |
|
|
/* |
587 |
|
|
* Try reading a kernel manually from the disk. The code here |
588 |
|
|
* does not rely on machine-dependant boot blocks etc. |
589 |
|
|
*/ |
590 |
|
|
/* ISO9660: (0x800 bytes at 0x8000) */ |
591 |
|
|
bootblock_buf = malloc(0x800); |
592 |
|
|
if (bootblock_buf == NULL) { |
593 |
|
|
fprintf(stderr, "Out of memory.\n"); |
594 |
dpavlin |
2 |
exit(1); |
595 |
|
|
} |
596 |
dpavlin |
6 |
|
597 |
|
|
res = diskimage_access(m, boot_disk_id, boot_disk_type, |
598 |
|
|
0, 0x8000, bootblock_buf, 0x800); |
599 |
|
|
if (!res) { |
600 |
|
|
fatal("Couldn't read the disk image. Aborting.\n"); |
601 |
|
|
return 0; |
602 |
|
|
} |
603 |
|
|
|
604 |
|
|
iso_type = 0; |
605 |
|
|
if (strncmp((char *)bootblock_buf+1, "CD001", 5) == 0) |
606 |
|
|
iso_type = 1; |
607 |
|
|
if (strncmp((char *)bootblock_buf+1, "CDW01", 5) == 0) |
608 |
|
|
iso_type = 2; |
609 |
|
|
if (strncmp((char *)bootblock_buf+1, "CDROM", 5) == 0) |
610 |
|
|
iso_type = 3; |
611 |
|
|
|
612 |
|
|
if (iso_type != 0) { |
613 |
|
|
/* We can't load a kernel if the name |
614 |
|
|
isn't specified. */ |
615 |
|
|
if (cpu->machine->boot_kernel_filename == NULL || |
616 |
|
|
cpu->machine->boot_kernel_filename[0] == '\0') |
617 |
|
|
fatal("\nISO9660 filesystem, but no kernel " |
618 |
|
|
"specified? (Use the -j option.)\n"); |
619 |
|
|
else |
620 |
|
|
retval = iso_load_bootblock(m, cpu, boot_disk_id, |
621 |
|
|
boot_disk_type, iso_type, bootblock_buf, |
622 |
|
|
n_loadp, load_namesp); |
623 |
|
|
} |
624 |
|
|
|
625 |
|
|
free(bootblock_buf); |
626 |
|
|
return retval; |
627 |
dpavlin |
2 |
} |
628 |
|
|
|
629 |
|
|
|
630 |
|
|
/* |
631 |
|
|
* emul_new(): |
632 |
|
|
* |
633 |
|
|
* Returns a reasonably initialized struct emul. |
634 |
|
|
*/ |
635 |
|
|
struct emul *emul_new(char *name) |
636 |
|
|
{ |
637 |
|
|
struct emul *e; |
638 |
|
|
e = malloc(sizeof(struct emul)); |
639 |
|
|
if (e == NULL) { |
640 |
|
|
fprintf(stderr, "out of memory in emul_new()\n"); |
641 |
|
|
exit(1); |
642 |
|
|
} |
643 |
|
|
|
644 |
|
|
memset(e, 0, sizeof(struct emul)); |
645 |
|
|
|
646 |
|
|
/* Sane default values: */ |
647 |
|
|
e->n_machines = 0; |
648 |
|
|
|
649 |
|
|
if (name != NULL) { |
650 |
|
|
e->name = strdup(name); |
651 |
|
|
if (e->name == NULL) { |
652 |
|
|
fprintf(stderr, "out of memory in emul_new()\n"); |
653 |
|
|
exit(1); |
654 |
|
|
} |
655 |
|
|
} |
656 |
|
|
|
657 |
|
|
return e; |
658 |
|
|
} |
659 |
|
|
|
660 |
|
|
|
661 |
|
|
/* |
662 |
|
|
* emul_add_machine(): |
663 |
|
|
* |
664 |
|
|
* Calls machine_new(), adds the new machine into the emul struct, and |
665 |
|
|
* returns a pointer to the new machine. |
666 |
|
|
* |
667 |
|
|
* This function should be used instead of manually calling machine_new(). |
668 |
|
|
*/ |
669 |
|
|
struct machine *emul_add_machine(struct emul *e, char *name) |
670 |
|
|
{ |
671 |
|
|
struct machine *m; |
672 |
|
|
|
673 |
|
|
m = machine_new(name, e); |
674 |
|
|
m->serial_nr = (e->next_serial_nr ++); |
675 |
|
|
|
676 |
|
|
e->n_machines ++; |
677 |
|
|
e->machines = realloc(e->machines, |
678 |
|
|
sizeof(struct machine *) * e->n_machines); |
679 |
|
|
if (e->machines == NULL) { |
680 |
|
|
fprintf(stderr, "emul_add_machine(): out of memory\n"); |
681 |
|
|
exit(1); |
682 |
|
|
} |
683 |
|
|
|
684 |
|
|
e->machines[e->n_machines - 1] = m; |
685 |
|
|
return m; |
686 |
|
|
} |
687 |
|
|
|
688 |
|
|
|
689 |
|
|
/* |
690 |
|
|
* add_arc_components(): |
691 |
|
|
* |
692 |
|
|
* This function adds ARCBIOS memory descriptors for the loaded program, |
693 |
|
|
* and ARCBIOS components for SCSI devices. |
694 |
|
|
*/ |
695 |
|
|
static void add_arc_components(struct machine *m) |
696 |
|
|
{ |
697 |
|
|
struct cpu *cpu = m->cpus[m->bootstrap_cpu]; |
698 |
|
|
uint64_t start = cpu->pc & 0x1fffffff; |
699 |
|
|
uint64_t len = 0xc00000 - start; |
700 |
|
|
struct diskimage *d; |
701 |
|
|
uint64_t scsicontroller, scsidevice, scsidisk; |
702 |
|
|
|
703 |
|
|
if ((cpu->pc >> 60) != 0xf) { |
704 |
|
|
start = cpu->pc & 0xffffffffffULL; |
705 |
|
|
len = 0xc00000 - start; |
706 |
|
|
} |
707 |
|
|
|
708 |
|
|
len += 1048576 * m->memory_offset_in_mb; |
709 |
|
|
|
710 |
|
|
/* NOTE/TODO: magic 12MB end of load program area */ |
711 |
|
|
arcbios_add_memory_descriptor(cpu, |
712 |
|
|
0x60000 + m->memory_offset_in_mb * 1048576, |
713 |
|
|
start-0x60000 - m->memory_offset_in_mb * 1048576, |
714 |
|
|
ARCBIOS_MEM_FreeMemory); |
715 |
|
|
arcbios_add_memory_descriptor(cpu, |
716 |
|
|
start, len, ARCBIOS_MEM_LoadedProgram); |
717 |
|
|
|
718 |
dpavlin |
6 |
scsicontroller = arcbios_get_scsicontroller(m); |
719 |
dpavlin |
2 |
if (scsicontroller == 0) |
720 |
|
|
return; |
721 |
|
|
|
722 |
|
|
/* TODO: The device 'name' should defined be somewhere else. */ |
723 |
|
|
|
724 |
|
|
d = m->first_diskimage; |
725 |
|
|
while (d != NULL) { |
726 |
|
|
if (d->type == DISKIMAGE_SCSI) { |
727 |
|
|
int a, b, flags = COMPONENT_FLAG_Input; |
728 |
|
|
char component_string[100]; |
729 |
|
|
char *name = "DEC RZ58 (C) DEC2000"; |
730 |
|
|
|
731 |
|
|
/* Read-write, or read-only? */ |
732 |
|
|
if (d->writable) |
733 |
|
|
flags |= COMPONENT_FLAG_Output; |
734 |
|
|
else |
735 |
|
|
flags |= COMPONENT_FLAG_ReadOnly; |
736 |
|
|
|
737 |
|
|
a = COMPONENT_TYPE_DiskController; |
738 |
|
|
b = COMPONENT_TYPE_DiskPeripheral; |
739 |
|
|
|
740 |
|
|
if (d->is_a_cdrom) { |
741 |
|
|
flags |= COMPONENT_FLAG_Removable; |
742 |
|
|
a = COMPONENT_TYPE_CDROMController; |
743 |
|
|
b = COMPONENT_TYPE_FloppyDiskPeripheral; |
744 |
|
|
name = "NEC CD-ROM CDR-210P 1.0 "; |
745 |
|
|
} |
746 |
|
|
|
747 |
|
|
scsidevice = arcbios_addchild_manual(cpu, |
748 |
|
|
COMPONENT_CLASS_ControllerClass, |
749 |
|
|
a, flags, 1, 2, d->id, 0xffffffff, |
750 |
|
|
name, scsicontroller, NULL, 0); |
751 |
|
|
|
752 |
|
|
scsidisk = arcbios_addchild_manual(cpu, |
753 |
|
|
COMPONENT_CLASS_PeripheralClass, |
754 |
|
|
b, flags, 1, 2, 0, 0xffffffff, NULL, |
755 |
|
|
scsidevice, NULL, 0); |
756 |
|
|
|
757 |
|
|
/* |
758 |
|
|
* Add device string to component address mappings: |
759 |
|
|
* "scsi(0)disk(0)rdisk(0)partition(0)" |
760 |
|
|
*/ |
761 |
|
|
|
762 |
|
|
if (d->is_a_cdrom) { |
763 |
|
|
snprintf(component_string, |
764 |
|
|
sizeof(component_string), |
765 |
|
|
"scsi(0)cdrom(%i)", d->id); |
766 |
dpavlin |
6 |
arcbios_add_string_to_component(m, |
767 |
dpavlin |
2 |
component_string, scsidevice); |
768 |
|
|
|
769 |
|
|
snprintf(component_string, |
770 |
|
|
sizeof(component_string), |
771 |
|
|
"scsi(0)cdrom(%i)fdisk(0)", d->id); |
772 |
dpavlin |
6 |
arcbios_add_string_to_component(m, |
773 |
dpavlin |
2 |
component_string, scsidisk); |
774 |
|
|
} else { |
775 |
|
|
snprintf(component_string, |
776 |
|
|
sizeof(component_string), |
777 |
|
|
"scsi(0)disk(%i)", d->id); |
778 |
dpavlin |
6 |
arcbios_add_string_to_component(m, |
779 |
dpavlin |
2 |
component_string, scsidevice); |
780 |
|
|
|
781 |
|
|
snprintf(component_string, |
782 |
|
|
sizeof(component_string), |
783 |
|
|
"scsi(0)disk(%i)rdisk(0)", d->id); |
784 |
dpavlin |
6 |
arcbios_add_string_to_component(m, |
785 |
dpavlin |
2 |
component_string, scsidisk); |
786 |
|
|
} |
787 |
|
|
} |
788 |
|
|
|
789 |
|
|
d = d->next; |
790 |
|
|
} |
791 |
|
|
} |
792 |
|
|
|
793 |
|
|
|
794 |
|
|
/* |
795 |
|
|
* emul_machine_setup(): |
796 |
|
|
* |
797 |
|
|
* o) Initialize the hardware (RAM, devices, CPUs, ...) which |
798 |
|
|
* will be emulated in this machine. |
799 |
|
|
* |
800 |
|
|
* o) Load ROM code and/or other programs into emulated memory. |
801 |
|
|
* |
802 |
|
|
* o) Special hacks needed after programs have been loaded. |
803 |
|
|
*/ |
804 |
|
|
void emul_machine_setup(struct machine *m, int n_load, char **load_names, |
805 |
|
|
int n_devices, char **device_names) |
806 |
|
|
{ |
807 |
|
|
struct emul *emul; |
808 |
|
|
struct cpu *cpu; |
809 |
|
|
int i, iadd=4; |
810 |
dpavlin |
6 |
uint64_t memory_amount, entrypoint = 0, gp = 0, toc = 0; |
811 |
dpavlin |
2 |
int byte_order; |
812 |
|
|
|
813 |
|
|
emul = m->emul; |
814 |
|
|
|
815 |
|
|
debug("machine \"%s\":\n", m->name); |
816 |
|
|
debug_indentation(iadd); |
817 |
|
|
|
818 |
|
|
/* For userland-only, this decides which ARCH/cpu_name to use: */ |
819 |
|
|
if (m->machine_type == MACHINE_USERLAND && m->userland_emul != NULL) { |
820 |
|
|
useremul_name_to_useremul(NULL, m->userland_emul, |
821 |
|
|
&m->arch, &m->machine_name, &m->cpu_name); |
822 |
|
|
if (m->arch == ARCH_NOARCH) { |
823 |
|
|
printf("Unsupported userland emulation mode.\n"); |
824 |
|
|
exit(1); |
825 |
|
|
} |
826 |
|
|
} |
827 |
|
|
|
828 |
|
|
if (m->machine_type == MACHINE_NONE) { |
829 |
|
|
fatal("No machine type specified?\n"); |
830 |
|
|
exit(1); |
831 |
|
|
} |
832 |
|
|
|
833 |
|
|
m->cpu_family = cpu_family_ptr_by_number(m->arch); |
834 |
|
|
|
835 |
|
|
machine_memsize_fix(m); |
836 |
|
|
|
837 |
|
|
/* |
838 |
|
|
* Create the system's memory: |
839 |
|
|
* |
840 |
|
|
* (Don't print the amount for userland-only emulation; the |
841 |
|
|
* size doesn't matter.) |
842 |
|
|
*/ |
843 |
|
|
if (m->machine_type != MACHINE_USERLAND) |
844 |
|
|
debug("memory: %i MB", m->physical_ram_in_mb); |
845 |
|
|
memory_amount = (uint64_t)m->physical_ram_in_mb * 1048576; |
846 |
|
|
if (m->memory_offset_in_mb > 0) { |
847 |
|
|
/* |
848 |
|
|
* A special hack is used for some SGI models, |
849 |
|
|
* where memory is offset by 128MB to leave room for |
850 |
|
|
* EISA space and other things. |
851 |
|
|
*/ |
852 |
|
|
debug(" (offset by %iMB)", m->memory_offset_in_mb); |
853 |
|
|
memory_amount += 1048576 * m->memory_offset_in_mb; |
854 |
|
|
} |
855 |
|
|
m->memory = memory_new(memory_amount); |
856 |
|
|
if (m->machine_type != MACHINE_USERLAND) |
857 |
|
|
debug("\n"); |
858 |
|
|
|
859 |
|
|
/* Create CPUs: */ |
860 |
|
|
if (m->cpu_name == NULL) |
861 |
|
|
machine_default_cputype(m); |
862 |
|
|
if (m->ncpus == 0) { |
863 |
|
|
/* TODO: This should be moved elsewhere... */ |
864 |
|
|
if (m->machine_type == MACHINE_BEBOX) |
865 |
|
|
m->ncpus = 2; |
866 |
|
|
else if (m->machine_type == MACHINE_ARC && |
867 |
|
|
m->machine_subtype == MACHINE_ARC_NEC_R96) |
868 |
|
|
m->ncpus = 2; |
869 |
|
|
else if (m->machine_type == MACHINE_ARC && |
870 |
|
|
m->machine_subtype == MACHINE_ARC_NEC_R98) |
871 |
|
|
m->ncpus = 4; |
872 |
|
|
else |
873 |
|
|
m->ncpus = 1; |
874 |
|
|
} |
875 |
|
|
m->cpus = malloc(sizeof(struct cpu *) * m->ncpus); |
876 |
|
|
if (m->cpus == NULL) { |
877 |
|
|
fprintf(stderr, "out of memory\n"); |
878 |
|
|
exit(1); |
879 |
|
|
} |
880 |
|
|
memset(m->cpus, 0, sizeof(struct cpu *) * m->ncpus); |
881 |
|
|
|
882 |
|
|
/* Initialize dynamic binary translation, if available: */ |
883 |
|
|
if (m->bintrans_enable) |
884 |
|
|
bintrans_init(m, m->memory); |
885 |
|
|
|
886 |
|
|
debug("cpu0"); |
887 |
|
|
if (m->ncpus > 1) |
888 |
|
|
debug(" .. cpu%i", m->ncpus - 1); |
889 |
|
|
debug(": "); |
890 |
|
|
for (i=0; i<m->ncpus; i++) { |
891 |
|
|
m->cpus[i] = cpu_new(m->memory, m, i, m->cpu_name); |
892 |
|
|
if (m->bintrans_enable) |
893 |
|
|
bintrans_init_cpu(m->cpus[i]); |
894 |
|
|
} |
895 |
|
|
debug("\n"); |
896 |
|
|
|
897 |
|
|
if (m->use_random_bootstrap_cpu) |
898 |
|
|
m->bootstrap_cpu = random() % m->ncpus; |
899 |
|
|
else |
900 |
|
|
m->bootstrap_cpu = 0; |
901 |
|
|
|
902 |
|
|
cpu = m->cpus[m->bootstrap_cpu]; |
903 |
|
|
|
904 |
|
|
/* Set cpu->useremul_syscall, and use userland_memory_rw: */ |
905 |
|
|
if (m->userland_emul != NULL) { |
906 |
|
|
useremul_name_to_useremul(cpu, |
907 |
|
|
m->userland_emul, NULL, NULL, NULL); |
908 |
|
|
cpu->memory_rw = userland_memory_rw; |
909 |
|
|
} |
910 |
|
|
|
911 |
|
|
if (m->use_x11) |
912 |
|
|
x11_init(m); |
913 |
|
|
|
914 |
|
|
/* Fill memory with random bytes: */ |
915 |
|
|
if (m->random_mem_contents) { |
916 |
|
|
for (i=0; i<m->physical_ram_in_mb * 1048576; i+=256) { |
917 |
|
|
unsigned char data[256]; |
918 |
|
|
unsigned int j; |
919 |
|
|
for (j=0; j<sizeof(data); j++) |
920 |
|
|
data[j] = random() & 255; |
921 |
dpavlin |
6 |
cpu->memory_rw(cpu, m->memory, i, data, sizeof(data), |
922 |
|
|
MEM_WRITE, CACHE_NONE | NO_EXCEPTIONS | PHYSICAL); |
923 |
dpavlin |
2 |
} |
924 |
|
|
} |
925 |
|
|
|
926 |
|
|
if (m->userland_emul != NULL) { |
927 |
|
|
/* |
928 |
|
|
* For userland-only emulation, no machine emulation |
929 |
|
|
* is needed. |
930 |
|
|
*/ |
931 |
|
|
} else { |
932 |
|
|
for (i=0; i<n_devices; i++) |
933 |
|
|
device_add(m, device_names[i]); |
934 |
|
|
|
935 |
|
|
machine_setup(m); |
936 |
|
|
} |
937 |
|
|
|
938 |
|
|
diskimage_dump_info(m); |
939 |
|
|
|
940 |
|
|
/* Load files (ROM code, boot code, ...) into memory: */ |
941 |
|
|
if (n_load == 0) { |
942 |
dpavlin |
6 |
if (m->first_diskimage != NULL) { |
943 |
|
|
if (!load_bootblock(m, cpu, &n_load, &load_names)) { |
944 |
|
|
fprintf(stderr, "\nNo executable files were" |
945 |
|
|
" specified, and booting directly from disk" |
946 |
|
|
" failed.\n"); |
947 |
|
|
exit(1); |
948 |
|
|
} |
949 |
|
|
} else { |
950 |
dpavlin |
2 |
fprintf(stderr, "No executable file(s) loaded, and " |
951 |
|
|
"we are not booting directly from a disk image." |
952 |
|
|
"\nAborting.\n"); |
953 |
|
|
exit(1); |
954 |
|
|
} |
955 |
|
|
} |
956 |
|
|
|
957 |
|
|
while (n_load > 0) { |
958 |
dpavlin |
6 |
FILE *tmp_f; |
959 |
|
|
char *name_to_load = *load_names; |
960 |
|
|
int remove_after_load = 0; |
961 |
|
|
|
962 |
|
|
/* Special hack for removing temporary files: */ |
963 |
|
|
if (name_to_load[0] == 8) { |
964 |
|
|
name_to_load ++; |
965 |
|
|
remove_after_load = 1; |
966 |
|
|
} |
967 |
|
|
|
968 |
|
|
/* |
969 |
|
|
* Another special hack for temporary files; running gunzip |
970 |
|
|
* on them, if they have a gzip header. TODO: Change this |
971 |
|
|
* into some kind of generic support for gzipped files! |
972 |
|
|
*/ |
973 |
|
|
tmp_f = fopen(name_to_load, "r"); |
974 |
|
|
if (tmp_f != NULL) { |
975 |
|
|
unsigned char buf[2]; /* gzip header */ |
976 |
|
|
memset(buf, 0, sizeof(buf)); |
977 |
|
|
fread(buf, 1, sizeof(buf), tmp_f); |
978 |
|
|
if (buf[0]==0x1f && buf[1]==0x8b) { |
979 |
|
|
char *zz = malloc(strlen(name_to_load)*2 + 100); |
980 |
|
|
debug("gunziping %s\n", name_to_load); |
981 |
|
|
sprintf(zz, "mv %s %s.gz", name_to_load, |
982 |
|
|
name_to_load); |
983 |
|
|
system(zz); |
984 |
|
|
sprintf(zz, "gunzip %s.gz", name_to_load); |
985 |
|
|
system(zz); |
986 |
|
|
free(zz); |
987 |
|
|
} |
988 |
|
|
fclose(tmp_f); |
989 |
|
|
} |
990 |
|
|
|
991 |
|
|
/* Special things required _before_ loading the file: */ |
992 |
|
|
switch (m->arch) { |
993 |
|
|
case ARCH_X86: |
994 |
|
|
/* |
995 |
|
|
* X86 machines normally don't need to load any files, |
996 |
|
|
* they can boot from disk directly. Therefore, an x86 |
997 |
|
|
* machine usually boots up in 16-bit real mode. When |
998 |
|
|
* loading a 32-bit (or even 64-bit) ELF, that's not |
999 |
|
|
* very nice, hence this special case. |
1000 |
|
|
*/ |
1001 |
|
|
pc_bios_simple_pmode_setup(cpu); |
1002 |
|
|
break; |
1003 |
|
|
} |
1004 |
|
|
|
1005 |
dpavlin |
2 |
byte_order = NO_BYTE_ORDER_OVERRIDE; |
1006 |
|
|
|
1007 |
dpavlin |
6 |
/* |
1008 |
|
|
* Load the file: :-) |
1009 |
|
|
*/ |
1010 |
|
|
file_load(m, m->memory, name_to_load, &entrypoint, |
1011 |
dpavlin |
2 |
m->arch, &gp, &byte_order, &toc); |
1012 |
|
|
|
1013 |
dpavlin |
6 |
if (remove_after_load) { |
1014 |
|
|
debug("removing %s\n", name_to_load); |
1015 |
|
|
unlink(name_to_load); |
1016 |
|
|
} |
1017 |
|
|
|
1018 |
dpavlin |
2 |
if (byte_order != NO_BYTE_ORDER_OVERRIDE) |
1019 |
|
|
cpu->byte_order = byte_order; |
1020 |
|
|
|
1021 |
|
|
cpu->pc = entrypoint; |
1022 |
|
|
|
1023 |
|
|
switch (m->arch) { |
1024 |
|
|
case ARCH_MIPS: |
1025 |
|
|
if ((cpu->pc >> 32) == 0 |
1026 |
|
|
&& (cpu->pc & 0x80000000ULL)) |
1027 |
|
|
cpu->pc |= 0xffffffff00000000ULL; |
1028 |
|
|
|
1029 |
|
|
cpu->cd.mips.gpr[MIPS_GPR_GP] = gp; |
1030 |
|
|
|
1031 |
|
|
if ((cpu->cd.mips.gpr[MIPS_GPR_GP] >> 32) == 0 && |
1032 |
|
|
(cpu->cd.mips.gpr[MIPS_GPR_GP] & 0x80000000ULL)) |
1033 |
|
|
cpu->cd.mips.gpr[MIPS_GPR_GP] |= |
1034 |
|
|
0xffffffff00000000ULL; |
1035 |
|
|
break; |
1036 |
dpavlin |
4 |
|
1037 |
dpavlin |
2 |
case ARCH_PPC: |
1038 |
dpavlin |
6 |
/* See http://www.linuxbase.org/spec/ELF/ppc64/ |
1039 |
|
|
spec/x458.html for more info. */ |
1040 |
dpavlin |
2 |
cpu->cd.ppc.gpr[2] = toc; |
1041 |
dpavlin |
6 |
/* TODO */ |
1042 |
dpavlin |
2 |
break; |
1043 |
dpavlin |
4 |
|
1044 |
|
|
case ARCH_ALPHA: |
1045 |
|
|
case ARCH_HPPA: |
1046 |
dpavlin |
2 |
case ARCH_SPARC: |
1047 |
|
|
case ARCH_URISC: |
1048 |
|
|
break; |
1049 |
dpavlin |
4 |
|
1050 |
dpavlin |
6 |
case ARCH_ARM: |
1051 |
|
|
cpu->pc &= 0xffffffff; |
1052 |
|
|
break; |
1053 |
|
|
|
1054 |
dpavlin |
4 |
case ARCH_X86: |
1055 |
|
|
/* |
1056 |
dpavlin |
6 |
* NOTE: The toc field is used to indicate an ELF32 |
1057 |
|
|
* or ELF64 load. |
1058 |
dpavlin |
4 |
*/ |
1059 |
dpavlin |
6 |
switch (toc) { |
1060 |
|
|
case 0: /* 16-bit? TODO */ |
1061 |
dpavlin |
4 |
cpu->pc &= 0xffffffffULL; |
1062 |
dpavlin |
6 |
break; |
1063 |
|
|
case 1: /* 32-bit. */ |
1064 |
|
|
cpu->pc &= 0xffffffffULL; |
1065 |
|
|
break; |
1066 |
|
|
case 2: /* 64-bit: TODO */ |
1067 |
|
|
fatal("64-bit x86 load. TODO\n"); |
1068 |
|
|
exit(1); |
1069 |
|
|
} |
1070 |
dpavlin |
2 |
break; |
1071 |
dpavlin |
4 |
|
1072 |
dpavlin |
2 |
default: |
1073 |
|
|
fatal("emul_machine_setup(): Internal error: " |
1074 |
|
|
"Unimplemented arch %i\n", m->arch); |
1075 |
|
|
exit(1); |
1076 |
|
|
} |
1077 |
|
|
|
1078 |
|
|
/* |
1079 |
|
|
* For userland emulation, the remaining items |
1080 |
|
|
* on the command line will be passed as parameters |
1081 |
|
|
* to the emulated program, and will not be treated |
1082 |
|
|
* as filenames to load into the emulator. |
1083 |
|
|
* The program's name will be in load_names[0], and the |
1084 |
|
|
* rest of the parameters in load_names[1] and up. |
1085 |
|
|
*/ |
1086 |
|
|
if (m->userland_emul != NULL) |
1087 |
|
|
break; |
1088 |
|
|
|
1089 |
|
|
n_load --; |
1090 |
|
|
load_names ++; |
1091 |
|
|
} |
1092 |
|
|
|
1093 |
|
|
if (m->byte_order_override != NO_BYTE_ORDER_OVERRIDE) |
1094 |
|
|
cpu->byte_order = m->byte_order_override; |
1095 |
|
|
|
1096 |
|
|
/* Same byte order and entrypoint for all CPUs: */ |
1097 |
|
|
for (i=0; i<m->ncpus; i++) |
1098 |
|
|
if (i != m->bootstrap_cpu) { |
1099 |
|
|
m->cpus[i]->byte_order = cpu->byte_order; |
1100 |
|
|
m->cpus[i]->pc = cpu->pc; |
1101 |
|
|
} |
1102 |
|
|
|
1103 |
|
|
if (m->userland_emul != NULL) |
1104 |
|
|
useremul_setup(cpu, n_load, load_names); |
1105 |
|
|
|
1106 |
|
|
/* Startup the bootstrap CPU: */ |
1107 |
|
|
cpu->bootstrap_cpu_flag = 1; |
1108 |
|
|
cpu->running = 1; |
1109 |
|
|
|
1110 |
|
|
/* ... or pause all CPUs, if start_paused is set: */ |
1111 |
|
|
if (m->start_paused) { |
1112 |
|
|
for (i=0; i<m->ncpus; i++) |
1113 |
|
|
m->cpus[i]->running = 0; |
1114 |
|
|
} |
1115 |
|
|
|
1116 |
|
|
/* Add PC dump points: */ |
1117 |
|
|
add_dump_points(m); |
1118 |
|
|
|
1119 |
|
|
/* TODO: This is MIPS-specific! */ |
1120 |
|
|
if (m->machine_type == MACHINE_DEC && |
1121 |
|
|
cpu->cd.mips.cpu_type.mmu_model == MMU3K) |
1122 |
|
|
add_symbol_name(&m->symbol_context, |
1123 |
|
|
0x9fff0000, 0x10000, "r2k3k_cache", 0); |
1124 |
|
|
|
1125 |
|
|
symbol_recalc_sizes(&m->symbol_context); |
1126 |
|
|
|
1127 |
|
|
if (m->max_random_cycles_per_chunk > 0) |
1128 |
|
|
debug("using random cycle chunks (1 to %i cycles)\n", |
1129 |
|
|
m->max_random_cycles_per_chunk); |
1130 |
|
|
|
1131 |
|
|
/* Special hack for ARC/SGI emulation: */ |
1132 |
|
|
if ((m->machine_type == MACHINE_ARC || |
1133 |
|
|
m->machine_type == MACHINE_SGI) && m->prom_emulation) |
1134 |
|
|
add_arc_components(m); |
1135 |
|
|
|
1136 |
|
|
debug("starting cpu%i at ", m->bootstrap_cpu); |
1137 |
|
|
switch (m->arch) { |
1138 |
|
|
case ARCH_MIPS: |
1139 |
|
|
if (cpu->cd.mips.cpu_type.isa_level < 3 || |
1140 |
|
|
cpu->cd.mips.cpu_type.isa_level == 32) { |
1141 |
|
|
debug("0x%08x", (int)m->cpus[ |
1142 |
|
|
m->bootstrap_cpu]->pc); |
1143 |
|
|
if (cpu->cd.mips.gpr[MIPS_GPR_GP] != 0) |
1144 |
|
|
debug(" (gp=0x%08x)", (int)m->cpus[ |
1145 |
|
|
m->bootstrap_cpu]->cd.mips.gpr[ |
1146 |
|
|
MIPS_GPR_GP]); |
1147 |
|
|
} else { |
1148 |
|
|
debug("0x%016llx", (long long)m->cpus[ |
1149 |
|
|
m->bootstrap_cpu]->pc); |
1150 |
|
|
if (cpu->cd.mips.gpr[MIPS_GPR_GP] != 0) |
1151 |
|
|
debug(" (gp=0x%016llx)", (long long) |
1152 |
|
|
cpu->cd.mips.gpr[MIPS_GPR_GP]); |
1153 |
|
|
} |
1154 |
|
|
break; |
1155 |
|
|
case ARCH_PPC: |
1156 |
|
|
if (cpu->cd.ppc.bits == 32) |
1157 |
|
|
debug("0x%08x", (int)entrypoint); |
1158 |
|
|
else |
1159 |
|
|
debug("0x%016llx", (long long)entrypoint); |
1160 |
|
|
break; |
1161 |
dpavlin |
6 |
case ARCH_ARM: |
1162 |
|
|
/* ARM cpus aren't 64-bit: */ |
1163 |
|
|
debug("0x%08x", (int)entrypoint); |
1164 |
|
|
break; |
1165 |
dpavlin |
2 |
case ARCH_URISC: |
1166 |
|
|
{ |
1167 |
|
|
char tmps[100]; |
1168 |
|
|
unsigned char buf[sizeof(uint64_t)]; |
1169 |
|
|
|
1170 |
|
|
cpu->memory_rw(cpu, m->memory, 0, buf, sizeof(buf), |
1171 |
|
|
MEM_READ, CACHE_NONE | NO_EXCEPTIONS); |
1172 |
|
|
|
1173 |
|
|
entrypoint = 0; |
1174 |
|
|
for (i=0; i<cpu->cd.urisc.wordlen/8; i++) { |
1175 |
|
|
entrypoint <<= 8; |
1176 |
|
|
if (cpu->byte_order == EMUL_BIG_ENDIAN) |
1177 |
|
|
entrypoint += buf[i]; |
1178 |
|
|
else |
1179 |
|
|
entrypoint += buf[cpu-> |
1180 |
|
|
cd.urisc.wordlen/8 - 1 - i]; |
1181 |
|
|
} |
1182 |
|
|
|
1183 |
|
|
sprintf(tmps, "0x%%0%illx", cpu->cd.urisc.wordlen / 4); |
1184 |
|
|
debug(tmps, (long long)entrypoint); |
1185 |
|
|
cpu->pc = entrypoint; |
1186 |
|
|
} |
1187 |
|
|
break; |
1188 |
dpavlin |
4 |
case ARCH_X86: |
1189 |
dpavlin |
6 |
debug("0x%04x:0x%llx", cpu->cd.x86.s[X86_S_CS], |
1190 |
|
|
(long long)cpu->pc); |
1191 |
dpavlin |
4 |
break; |
1192 |
dpavlin |
2 |
default: |
1193 |
dpavlin |
4 |
debug("0x%016llx", (long long)cpu->pc); |
1194 |
dpavlin |
2 |
} |
1195 |
|
|
debug("\n"); |
1196 |
|
|
|
1197 |
|
|
debug_indentation(-iadd); |
1198 |
|
|
} |
1199 |
|
|
|
1200 |
|
|
|
1201 |
|
|
/* |
1202 |
|
|
* emul_dumpinfo(): |
1203 |
|
|
* |
1204 |
|
|
* Dump info about all machines in an emul. |
1205 |
|
|
*/ |
1206 |
|
|
void emul_dumpinfo(struct emul *e) |
1207 |
|
|
{ |
1208 |
|
|
int j, nm, iadd = 4; |
1209 |
|
|
|
1210 |
|
|
if (e->net != NULL) |
1211 |
|
|
net_dumpinfo(e->net); |
1212 |
|
|
|
1213 |
|
|
nm = e->n_machines; |
1214 |
|
|
for (j=0; j<nm; j++) { |
1215 |
|
|
debug("machine %i: \"%s\"\n", j, e->machines[j]->name); |
1216 |
|
|
debug_indentation(iadd); |
1217 |
|
|
machine_dumpinfo(e->machines[j]); |
1218 |
|
|
debug_indentation(-iadd); |
1219 |
|
|
} |
1220 |
|
|
} |
1221 |
|
|
|
1222 |
|
|
|
1223 |
|
|
/* |
1224 |
|
|
* emul_simple_init(): |
1225 |
|
|
* |
1226 |
|
|
* For a normal setup: |
1227 |
|
|
* |
1228 |
|
|
* o) Initialize a network. |
1229 |
|
|
* o) Initialize one machine. |
1230 |
|
|
* |
1231 |
|
|
* For a userland-only setup: |
1232 |
|
|
* |
1233 |
|
|
* o) Initialize a "pseudo"-machine. |
1234 |
|
|
*/ |
1235 |
|
|
void emul_simple_init(struct emul *emul) |
1236 |
|
|
{ |
1237 |
|
|
int iadd=4; |
1238 |
|
|
struct machine *m; |
1239 |
|
|
|
1240 |
|
|
if (emul->n_machines != 1) { |
1241 |
|
|
fprintf(stderr, "emul_simple_init(): n_machines != 1\n"); |
1242 |
|
|
exit(1); |
1243 |
|
|
} |
1244 |
|
|
|
1245 |
|
|
m = emul->machines[0]; |
1246 |
|
|
|
1247 |
|
|
if (m->userland_emul == NULL) { |
1248 |
|
|
debug("Simple setup...\n"); |
1249 |
|
|
debug_indentation(iadd); |
1250 |
|
|
|
1251 |
|
|
/* Create a network: */ |
1252 |
|
|
emul->net = net_init(emul, NET_INIT_FLAG_GATEWAY, |
1253 |
|
|
"10.0.0.0", 8); |
1254 |
|
|
} else { |
1255 |
|
|
/* Userland pseudo-machine: */ |
1256 |
|
|
debug("Syscall emulation (userland-only) setup...\n"); |
1257 |
|
|
debug_indentation(iadd); |
1258 |
|
|
} |
1259 |
|
|
|
1260 |
|
|
/* Create the machine: */ |
1261 |
|
|
emul_machine_setup(m, extra_argc, extra_argv, 0, NULL); |
1262 |
|
|
|
1263 |
|
|
debug_indentation(-iadd); |
1264 |
|
|
} |
1265 |
|
|
|
1266 |
|
|
|
1267 |
|
|
/* |
1268 |
|
|
* emul_create_from_configfile(): |
1269 |
|
|
* |
1270 |
|
|
* Create an emul struct by reading settings from a configuration file. |
1271 |
|
|
*/ |
1272 |
|
|
struct emul *emul_create_from_configfile(char *fname) |
1273 |
|
|
{ |
1274 |
|
|
int iadd = 4; |
1275 |
|
|
struct emul *e = emul_new(fname); |
1276 |
|
|
FILE *f; |
1277 |
|
|
char buf[128]; |
1278 |
|
|
size_t len; |
1279 |
|
|
|
1280 |
|
|
debug("Creating emulation from configfile \"%s\":\n", fname); |
1281 |
|
|
debug_indentation(iadd); |
1282 |
|
|
|
1283 |
|
|
f = fopen(fname, "r"); |
1284 |
|
|
if (f == NULL) { |
1285 |
|
|
perror(fname); |
1286 |
|
|
exit(1); |
1287 |
|
|
} |
1288 |
|
|
|
1289 |
|
|
/* Read header: (must be !!gxemul) */ |
1290 |
|
|
len = fread(buf, 1, 8, f); |
1291 |
|
|
if (len != 8 || strncmp(buf, "!!gxemul", 8) != 0) { |
1292 |
|
|
fprintf(stderr, "%s: must start with '!!gxemul'\n", fname); |
1293 |
|
|
exit(1); |
1294 |
|
|
} |
1295 |
|
|
|
1296 |
|
|
/* Restart from beginning: */ |
1297 |
|
|
rewind(f); |
1298 |
|
|
|
1299 |
|
|
emul_parse_config(e, f); |
1300 |
|
|
|
1301 |
|
|
fclose(f); |
1302 |
|
|
debug_indentation(-iadd); |
1303 |
|
|
return e; |
1304 |
|
|
} |
1305 |
|
|
|
1306 |
|
|
|
1307 |
|
|
/* |
1308 |
|
|
* emul_run(): |
1309 |
|
|
* |
1310 |
|
|
* o) Set up things needed before running emulations. |
1311 |
|
|
* |
1312 |
|
|
* o) Run emulations (one or more, in parallel). |
1313 |
|
|
* |
1314 |
|
|
* o) De-initialize things. |
1315 |
|
|
*/ |
1316 |
|
|
void emul_run(struct emul **emuls, int n_emuls) |
1317 |
|
|
{ |
1318 |
|
|
struct emul *e; |
1319 |
|
|
int i = 0, j, go = 1, n, anything; |
1320 |
|
|
|
1321 |
|
|
if (n_emuls < 1) { |
1322 |
|
|
fprintf(stderr, "emul_run(): no thing to do\n"); |
1323 |
|
|
return; |
1324 |
|
|
} |
1325 |
|
|
|
1326 |
|
|
atexit(fix_console); |
1327 |
|
|
|
1328 |
|
|
i = 79; |
1329 |
|
|
while (i-- > 0) |
1330 |
|
|
debug("-"); |
1331 |
|
|
debug("\n\n"); |
1332 |
|
|
|
1333 |
|
|
/* Initialize the interactive debugger: */ |
1334 |
|
|
debugger_init(emuls, n_emuls); |
1335 |
|
|
|
1336 |
|
|
/* |
1337 |
|
|
* console_init_main() makes sure that the terminal is in a |
1338 |
|
|
* reasonable state. |
1339 |
|
|
* |
1340 |
|
|
* The SIGINT handler is for CTRL-C (enter the interactive debugger). |
1341 |
|
|
* |
1342 |
|
|
* The SIGCONT handler is invoked whenever the user presses CTRL-Z |
1343 |
|
|
* (or sends SIGSTOP) and then continues. It makes sure that the |
1344 |
|
|
* terminal is in an expected state. |
1345 |
|
|
*/ |
1346 |
|
|
console_init_main(emuls[0]); /* TODO: what is a good argument? */ |
1347 |
|
|
signal(SIGINT, debugger_activate); |
1348 |
|
|
signal(SIGCONT, console_sigcont); |
1349 |
|
|
|
1350 |
|
|
/* Not in verbose mode? Then set quiet_mode. */ |
1351 |
|
|
if (!verbose) |
1352 |
|
|
quiet_mode = 1; |
1353 |
|
|
|
1354 |
|
|
/* Initialize all CPUs in all machines in all emulations: */ |
1355 |
|
|
for (i=0; i<n_emuls; i++) { |
1356 |
|
|
e = emuls[i]; |
1357 |
|
|
if (e == NULL) |
1358 |
|
|
continue; |
1359 |
|
|
for (j=0; j<e->n_machines; j++) |
1360 |
|
|
cpu_run_init(e, e->machines[j]); |
1361 |
|
|
} |
1362 |
|
|
|
1363 |
|
|
/* |
1364 |
|
|
* MAIN LOOP: |
1365 |
|
|
* |
1366 |
|
|
* Run all emulations in parallel, running each machine in |
1367 |
|
|
* each emulation. |
1368 |
|
|
*/ |
1369 |
|
|
while (go) { |
1370 |
|
|
go = 0; |
1371 |
|
|
|
1372 |
|
|
x11_check_event(emuls, n_emuls); |
1373 |
|
|
|
1374 |
|
|
for (i=0; i<n_emuls; i++) { |
1375 |
|
|
e = emuls[i]; |
1376 |
|
|
if (e == NULL) |
1377 |
|
|
continue; |
1378 |
|
|
|
1379 |
|
|
for (j=0; j<e->n_machines; j++) { |
1380 |
|
|
/* TODO: cpu_run() is a strange name, since |
1381 |
|
|
there can be multiple cpus in a machine */ |
1382 |
|
|
anything = cpu_run(e, e->machines[j]); |
1383 |
|
|
if (anything) |
1384 |
|
|
go = 1; |
1385 |
|
|
} |
1386 |
|
|
} |
1387 |
|
|
} |
1388 |
|
|
|
1389 |
|
|
/* Deinitialize all CPUs in all machines in all emulations: */ |
1390 |
|
|
for (i=0; i<n_emuls; i++) { |
1391 |
|
|
e = emuls[i]; |
1392 |
|
|
if (e == NULL) |
1393 |
|
|
continue; |
1394 |
|
|
for (j=0; j<e->n_machines; j++) |
1395 |
|
|
cpu_run_deinit(e, e->machines[j]); |
1396 |
|
|
} |
1397 |
|
|
|
1398 |
|
|
/* force_debugger_at_exit flag set? Then enter the debugger: */ |
1399 |
|
|
if (force_debugger_at_exit) { |
1400 |
|
|
quiet_mode = 0; |
1401 |
|
|
debugger_reset(); |
1402 |
|
|
debugger(); |
1403 |
|
|
} |
1404 |
|
|
|
1405 |
|
|
/* Any machine using X11? Then we should wait before exiting: */ |
1406 |
|
|
n = 0; |
1407 |
|
|
for (i=0; i<n_emuls; i++) |
1408 |
|
|
for (j=0; j<emuls[i]->n_machines; j++) |
1409 |
|
|
if (emuls[i]->machines[j]->use_x11) |
1410 |
|
|
n++; |
1411 |
|
|
if (n > 0) { |
1412 |
|
|
printf("Press enter to quit.\n"); |
1413 |
|
|
while (!console_charavail(MAIN_CONSOLE)) { |
1414 |
|
|
x11_check_event(emuls, n_emuls); |
1415 |
|
|
usleep(1); |
1416 |
|
|
} |
1417 |
|
|
console_readchar(MAIN_CONSOLE); |
1418 |
|
|
} |
1419 |
|
|
|
1420 |
|
|
console_deinit(); |
1421 |
|
|
} |
1422 |
|
|
|