/[gxemul]/trunk/src/emul_parse.c
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Contents of /trunk/src/emul_parse.c

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Revision 32 - (show annotations)
Mon Oct 8 16:20:58 2007 UTC (16 years, 6 months ago) by dpavlin
File MIME type: text/plain
File size: 20788 byte(s) 
++ trunk/HISTORY	(local)
$Id: HISTORY,v 1.1421 2006/11/06 05:32:37 debug Exp $
20060816	Adding a framework for emulated/virtual timers (src/timer.c),
		using only setitimer().
		Rewriting the mc146818 to use the new timer framework.
20060817	Adding a call to gettimeofday() every now and then (once every
		second, at the moment) to resynch the timer if it drifts.
		Beginning to convert the ISA timer interrupt mechanism (8253
		and 8259) to use the new timer framework.
		Removing the -I command line option.
20060819	Adding the -I command line option again, with new semantics.
		Working on Footbridge timer interrupts; NetBSD/NetWinder and
		NetBSD/CATS now run at correct speed, but unfortunately with
		HUGE delays during bootup.
20060821	Some minor m68k updates. Adding the first instruction: nop. :)
		Minor Alpha emulation updates.
20060822	Adding a FreeBSD development specific YAMON environment
		variable ("khz") (as suggested by Bruce M. Simpson).
		Moving YAMON environment variable initialization from
		machine_evbmips.c into promemul/yamon.c, and adding some more
		variables.
		Continuing on the LCA PCI bus controller (for Alpha machines).
20060823	Continuing on the timer stuff: experimenting with MIPS count/
		compare interrupts connected to the timer framework.
20060825	Adding bogus SCSI commands 0x51 (SCSICDROM_READ_DISCINFO) and
		0x52 (SCSICDROM_READ_TRACKINFO) to the SCSI emulation layer,
		to allow NetBSD/pmax 4.0_BETA to be installed from CDROM.
		Minor updates to the LCA PCI controller.
20060827	Implementing a CHIP8 cpu mode, and a corresponding CHIP8
		machine, for fun. Disassembly support for all instructions,
		and most of the common instructions have been implemented: mvi,
		mov_imm, add_imm, jmp, rand, cls, sprite, skeq_imm, jsr,
		skne_imm, bcd, rts, ldr, str, mov, or, and, xor, add, sub,
		font, ssound, sdelay, gdelay, bogus skup/skpr, skeq, skne.
20060828	Beginning to convert the CHIP8 cpu in the CHIP8 machine to a
		(more correct) RCA 180x cpu. (Disassembly for all 1802
		instructions has been implemented, but no execution yet, and
		no 1805 extended instructions.)
20060829	Minor Alpha emulation updates.
20060830	Beginning to experiment a little with PCI IDE for SGI O2.
		Fixing the cursor key mappings for MobilePro 770 emulation.
		Fixing the LK201 warning caused by recent NetBSD/pmax.
		The MIPS R41xx standby, suspend, and hibernate instructions now
		behave like the RM52xx/MIPS32/MIPS64 wait instruction.
		Fixing dev_wdc so it calculates correct (64-bit) offsets before
		giving them to diskimage_access().
20060831	Continuing on Alpha emulation (OSF1 PALcode).
20060901	Minor Alpha updates; beginning on virtual memory pagetables.
		Removed the limit for max nr of devices (in preparation for
		allowing devices' base addresses to be changed during runtime).
		Adding a hack for MIPS [d]mfc0 select 0 (except the count
		register), so that the coproc register is simply copied.
		The MIPS suspend instruction now exits the emulator, instead
		of being treated as a wait instruction (this causes NetBSD/
		hpcmips to get correct 'halt' behavior).
		The VR41xx RTC now returns correct time.
		Connecting the VR41xx timer to the timer framework (fixed at
		128 Hz, for now).
		Continuing on SPARC emulation, adding more instructions:
		restore, ba_xcc, ble. The rectangle drawing demo works :)
		Removing the last traces of the old ENABLE_CACHE_EMULATION
		MIPS stuff (not usable with dyntrans anyway).
20060902	Splitting up src/net.c into several smaller files in its own
		subdirectory (src/net/).
20060903	Cleanup of the files in src/net/, to make them less ugly.
20060904	Continuing on the 'settings' subsystem.
		Minor progress on the SPARC emulation mode.
20060905	Cleanup of various things, and connecting the settings
		infrastructure to various subsystems (emul, machine, cpu, etc).
		Changing the lk201 mouse update routine to not rely on any
		emulated hardware framebuffer cursor coordinates, but instead
		always do (semi-usable) relative movements.
20060906	Continuing on the lk201 mouse stuff. Mouse behaviour with
		multiple framebuffers (which was working in Ultrix) is now
		semi-broken (but it still works, in a way).
		Moving the documentation about networking into its own file
		(networking.html), and refreshing it a bit. Adding an example
		of how to use ethernet frame direct-access (udp_snoop).
20060907	Continuing on the settings infrastructure.
20060908	Minor updates to SH emulation: for 32-bit emulation: delay
		slots and the 'jsr @Rn' instruction. I'm putting 64-bit SH5 on
		ice, for now.
20060909-10	Implementing some more 32-bit SH instructions. Removing the
		64-bit mode completely. Enough has now been implemented to run
		the rectangle drawing demo. :-)
20060912	Adding more SH instructions.
20060916	Continuing on SH emulation (some more instructions: div0u,
		div1, rotcl/rotcr, more mov instructions, dt, braf, sets, sett,
		tst_imm, dmuls.l, subc, ldc_rm_vbr, movt, clrt, clrs, clrmac).
		Continuing on the settings subsystem (beginning on reading/
		writing settings, removing bugs, and connecting more cpus to
		the framework).
20060919	More work on SH emulation; adding an ldc banked instruction,
		and attaching a 640x480 framebuffer to the Dreamcast machine
		mode (NetBSD/dreamcast prints the NetBSD copyright banner :-),
		and then panics).
20060920	Continuing on the settings subsystem.
20060921	Fixing the Footbridge timer stuff so that NetBSD/cats and
		NetBSD/netwinder boot up without the delays.
20060922	Temporarily hardcoding MIPS timer interrupt to 100 Hz. With
		'wait' support disabled, NetBSD/malta and Linux/malta run at
		correct speed.
20060923	Connecting dev_gt to the timer framework, so that NetBSD/cobalt
		runs at correct speed.
		Moving SH4-specific memory mapped registers into its own
		device (dev_sh4.c).
		Running with -N now prints "idling" instead of bogus nr of
		instrs/second (which isn't valid anyway) while idling.
20060924	Algor emulation should now run at correct speed.
		Adding disassembly support for some MIPS64 revision 2
		instructions: ext, dext, dextm, dextu.
20060926	The timer framework now works also when the MIPS wait
		instruction is used.
20060928	Re-implementing checks for coprocessor availability for MIPS
		cop0 instructions. (Thanks to Carl van Schaik for noticing the
		lack of cop0 availability checks.)
20060929	Implementing an instruction combination hack which treats
		NetBSD/pmax' idle loop as a wait-like instruction.
20060930	The ENTRYHI_R_MASK was missing in (at least) memory_mips_v2p.c,
		causing TLB lookups to sometimes succeed when they should have
		failed. (A big thank you to Juli Mallett for noticing the
		problem.)
		Adding disassembly support for more MIPS64 revision 2 opcodes
		(seb, seh, wsbh, jalr.hb, jr.hb, synci, ins, dins, dinsu,
		dinsm, dsbh, dshd, ror, dror, rorv, drorv, dror32). Also
		implementing seb, seh, dsbh, dshd, and wsbh.
		Implementing an instruction combination hack for Linux/pmax'
		idle loop, similar to the NetBSD/pmax case.
20061001	Changing the NetBSD/sgimips install instructions to extract
		files from an iso image, instead of downloading them via ftp.
20061002	More-than-31-bit userland addresses in memory_mips_v2p.c were
		not actually working; applying a fix from Carl van Schaik to
		enable them to work + making some other updates (adding kuseg
		support).
		Fixing hpcmips (vr41xx) timer initialization.
		Experimenting with O(n)->O(1) reduction in the MIPS TLB lookup
		loop. Seems to work both for R3000 and non-R3000.
20061003	Continuing a little on SH emulation (adding more control
		registers; mini-cleanup of memory_sh.c).
20061004	Beginning on a dev_rtc, a clock/timer device for the test
		machines; also adding a demo, and some documentation.
		Fixing a bug in SH "mov.w @(disp,pc),Rn" (the result wasn't
		sign-extended), and adding the addc and ldtlb instructions.
20061005	Contining on SH emulation: virtual to physical address
		translation, and a skeleton exception mechanism.
20061006	Adding more SH instructions (various loads and stores, rte,
		negc, muls.w, various privileged register-move instructions).
20061007	More SH instructions: various move instructions, trapa, div0s,
		float, fdiv, ftrc.
		Continuing on dev_rtc; removing the rtc demo.
20061008	Adding a dummy Dreamcast PROM module. (Homebrew Dreamcast
		programs using KOS libs need this.)
		Adding more SH instructions: "stc vbr,rn", rotl, rotr, fsca,
		fmul, fadd, various floating-point moves, etc. A 256-byte
		demo for Dreamcast runs :-)
20061012	Adding the SH "lds Rm,pr" and bsr instructions.
20061013	More SH instructions: "sts fpscr,rn", tas.b, and some more
		floating point instructions, cmp/str, and more moves.
		Adding a dummy dev_pvr (Dreamcast graphics controller).
20061014	Generalizing the expression evaluator (used in the built-in
		debugger) to support parentheses and +-*/%^&|.
20061015	Removing the experimental tlb index hint code in
		mips_memory_v2p.c, since it didn't really have any effect.
20061017	Minor SH updates; adding the "sts pr,Rn", fcmp/gt, fneg,
		frchg, and some other instructions. Fixing missing sign-
		extension in an 8-bit load instruction.
20061019	Adding a simple dev_dreamcast_rtc.
		Implementing memory-mapped access to the SH ITLB/UTLB arrays.
20061021	Continuing on various SH and Dreamcast things: sh4 timers,
		debug messages for dev_pvr, fixing some virtual address
		translation bugs, adding the bsrf instruction.
		The NetBSD/dreamcast GENERIC_MD kernel now reaches userland :)
		Adding a dummy dev_dreamcast_asic.c (not really useful yet).
		Implementing simple support for Store Queues.
		Beginning on the PVR Tile Accelerator.
20061022	Generalizing the PVR framebuffer to support off-screen drawing,
		multiple bit-depths, etc. (A small speed penalty, but most
		likely worth it.)
		Adding more SH instructions (mulu.w, fcmp/eq, fsub, fmac,
		fschg, and some more); correcting bugs in "fsca" and "float".
20061024	Adding the SH ftrv (matrix * vector) instruction. Marcus
		Comstedt's "tatest" example runs :) (wireframe only).
		Correcting disassembly for SH floating point instructions that
		use the xd* registers.
		Adding the SH fsts instruction.
		In memory_device_dyntrans_access(), only the currently used
		range is now invalidated, and not the entire device range.
20061025	Adding a dummy AVR32 cpu mode skeleton.
20061026	Various Dreamcast updates; beginning on a Maple bus controller.
20061027	Continuing on the Maple bus. A bogus Controller, Keyboard, and
		Mouse can now be detected by NetBSD and KOS homebrew programs.
		Cleaning up the SH4 Timer Management Unit, and beginning on
		SH4 interrupts.
		Implementing the Dreamcast SYSASIC.
20061028	Continuing on the SYSASIC.
		Adding the SH fsqrt instruction.
		memory_sh.c now actually scans the ITLB.
		Fixing a bug in dev_sh4.c, related to associative writes into
		the memory-mapped UTLB array. NetBSD/dreamcast now reaches
		userland stably, and prints the "Terminal type?" message :-]
		Implementing enough of the Dreamcast keyboard to make NetBSD
		accept it for input.
		Enabling SuperH for stable (non-development) builds.
		Adding NetBSD/dreamcast to the documentation, although it
		doesn't support root-on-nfs yet.
20061029	Changing usleep(1) calls in the debugger to to usleep(10000)
		(according to Brian Foley, this makes GXemul run better on
		MacOS X).
		Making the Maple "Controller" do something (enough to barely
		interact with dcircus.elf).
20061030-31	Some progress on the PVR. More test programs start running (but
		with strange output).
		Various other SH4-related updates.
20061102	Various Dreamcast and SH4 updates; more KOS demos run now.
20061104	Adding a skeleton dev_mb8696x.c (the Dreamcast's LAN adapter).
20061105	Continuing on the MB8696x; NetBSD/dreamcast detects it as mbe0.
		Testing for the release.

==============  RELEASE 0.4.3  ==============
1 /*
2 * Copyright (C) 2005-2006 Anders Gavare. All rights reserved.
3 *
4 * Redistribution and use in source and binary forms, with or without
5 * modification, are permitted provided that the following conditions are met:
6 *
7 * 1. Redistributions of source code must retain the above copyright
8 * notice, this list of conditions and the following disclaimer.
9 * 2. Redistributions in binary form must reproduce the above copyright
10 * notice, this list of conditions and the following disclaimer in the
11 * documentation and/or other materials provided with the distribution.
12 * 3. The name of the author may not be used to endorse or promote products
13 * derived from this software without specific prior written permission.
14 *
15 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
16 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
17 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
18 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
19 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
20 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
21 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
22 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
23 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
24 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
25 * SUCH DAMAGE.
26 *
27 *
28 * $Id: emul_parse.c,v 1.44 2006/09/05 06:13:27 debug Exp $
29 *
30 * Set up an emulation by parsing a config file.
31 *
32 * TODO: REWRITE THIS FROM SCRATCH! :-)
33 */
34
35 #include <stdio.h>
36 #include <stdlib.h>
37 #include <string.h>
38
39 #include "diskimage.h"
40 #include "emul.h"
41 #include "machine.h"
42 #include "misc.h"
43 #include "net.h"
44
45
46 #define is_word_char(ch) ( \
47 (ch >= 'a' && ch <= 'z') || (ch >= 'A' && ch <= 'Z') || \
48 ch == '_' || ch == '$' || (ch >= '0' && ch <= '9') )
49
50 #define MAX_WORD_LEN 200
51
52 #define EXPECT_WORD 1
53 #define EXPECT_LEFT_PARENTHESIS 2
54 #define EXPECT_RIGHT_PARENTHESIS 4
55
56 static int parenthesis_level = 0;
57
58
59 /*
60 * read_one_word():
61 *
62 * Reads the file f until it has read a complete word. Whitespace is ignored,
63 * and also any exclamation mark ('!') and anything following an exclamation
64 * mark on a line.
65 *
66 * Used internally by emul_parse_config().
67 */
68 static void read_one_word(FILE *f, char *buf, int buflen, int *line,
69 int expect)
70 {
71 int ch;
72 int done = 0;
73 int curlen = 0;
74 int in_word = 0;
75
76 while (!done) {
77 if (curlen >= buflen - 1)
78 break;
79
80 ch = fgetc(f);
81 if (ch == EOF)
82 break;
83
84 if (in_word) {
85 if (is_word_char(ch)) {
86 buf[curlen++] = ch;
87 if (curlen == buflen - 1)
88 done = 1;
89 continue;
90 } else {
91 if (ungetc(ch, f) == EOF) {
92 fatal("ungetc() failed?\n");
93 exit(1);
94 }
95 break;
96 }
97 }
98
99 if (ch == '\n') {
100 (*line) ++;
101 continue;
102 }
103
104 if (ch == '\r')
105 continue;
106
107 if (ch == '!') {
108 /* Skip until newline: */
109 while (ch != '\n' && ch != EOF)
110 ch = fgetc(f);
111 if (ch == '\n')
112 (*line) ++;
113 continue;
114 }
115
116 if (ch == '{') {
117 int depth = 1;
118
119 /* Skip until '}': */
120 while (depth > 0) {
121 ch = fgetc(f);
122 if (ch == '\n')
123 (*line) ++;
124 if (ch == '{')
125 depth ++;
126 if (ch == '}')
127 depth --;
128 if (ch == EOF) {
129 fatal("line %i: unexpected EOF inside"
130 " a nested comment\n", *line);
131 exit(1);
132 }
133 }
134 continue;
135 }
136
137 /* Whitespace? */
138 if (ch <= ' ')
139 continue;
140
141 if (ch == '"' || ch == '\'') {
142 /* This is a quoted word. */
143 int start_ch = ch;
144
145 if (expect & EXPECT_LEFT_PARENTHESIS) {
146 fatal("unexpected character '%c', line %i\n",
147 ch, *line);
148 exit(1);
149 }
150
151 while (curlen < buflen - 1) {
152 ch = fgetc(f);
153 if (ch == '\n') {
154 fatal("line %i: newline inside"
155 " quotes?\n", *line);
156 exit(1);
157 }
158 if (ch == EOF) {
159 fatal("line %i: EOF inside a quoted"
160 " string?\n", *line);
161 exit(1);
162 }
163 if (ch == start_ch)
164 break;
165 buf[curlen++] = ch;
166 }
167 break;
168 }
169
170 if ((expect & EXPECT_WORD) && is_word_char(ch)) {
171 buf[curlen++] = ch;
172 in_word = 1;
173 if (curlen == buflen - 1)
174 done = 1;
175 } else {
176 if ((expect & EXPECT_LEFT_PARENTHESIS) && ch == '(') {
177 parenthesis_level ++;
178 buf[curlen++] = ch;
179 break;
180 }
181 if ((expect & EXPECT_RIGHT_PARENTHESIS) && ch == ')') {
182 parenthesis_level --;
183 buf[curlen++] = ch;
184 break;
185 }
186
187 fatal("unexpected character '%c', line %i\n",
188 ch, *line);
189 exit(1);
190 }
191 }
192
193 buf[curlen] = '\0';
194 }
195
196
197 #define PARSESTATE_NONE 0
198 #define PARSESTATE_EMUL 1
199 #define PARSESTATE_NET 2
200 #define PARSESTATE_MACHINE 3
201
202 static char cur_net_ipv4net[50];
203 static char cur_net_ipv4len[50];
204 static char cur_net_local_port[10];
205 #define MAX_N_REMOTE 20
206 #define MAX_REMOTE_LEN 100
207 static char *cur_net_remote[MAX_N_REMOTE];
208 static int cur_net_n_remote;
209
210 static char cur_machine_name[50];
211 static char cur_machine_cpu[50];
212 static char cur_machine_type[50];
213 static char cur_machine_subtype[50];
214 static char cur_machine_bootname[150];
215 static char cur_machine_bootarg[250];
216 static char cur_machine_slowsi[10];
217 static char cur_machine_prom_emulation[10];
218 static char cur_machine_use_x11[10];
219 static char cur_machine_x11_scaledown[10];
220 static char cur_machine_byte_order[20];
221 static char cur_machine_random_mem[10];
222 static char cur_machine_random_cpu[10];
223 static char cur_machine_force_netboot[10];
224 static char cur_machine_start_paused[10];
225 static char cur_machine_ncpus[10];
226 static char cur_machine_n_gfx_cards[10];
227 static char cur_machine_serial_nr[10];
228 static char cur_machine_emulated_hz[10];
229 static char cur_machine_memory[10];
230 #define MAX_N_LOAD 15
231 #define MAX_LOAD_LEN 2000
232 static char *cur_machine_load[MAX_N_LOAD];
233 static int cur_machine_n_load;
234 #define MAX_N_DISK 10
235 #define MAX_DISK_LEN 2000
236 static char *cur_machine_disk[MAX_N_DISK];
237 static int cur_machine_n_disk;
238 #define MAX_N_DEVICE 20
239 #define MAX_DEVICE_LEN 400
240 static char *cur_machine_device[MAX_N_DISK];
241 static int cur_machine_n_device;
242 #define MAX_N_X11_DISP 5
243 #define MAX_X11_DISP_LEN 1000
244 static char *cur_machine_x11_disp[MAX_N_X11_DISP];
245 static int cur_machine_n_x11_disp;
246
247 #define WORD(w,var) { \
248 if (strcmp(word, w) == 0) { \
249 read_one_word(f, word, maxbuflen, \
250 line, EXPECT_LEFT_PARENTHESIS); \
251 read_one_word(f, var, sizeof(var), \
252 line, EXPECT_WORD); \
253 read_one_word(f, word, maxbuflen, \
254 line, EXPECT_RIGHT_PARENTHESIS); \
255 return; \
256 } \
257 }
258
259 static void parse__machine(struct emul *e, FILE *f, int *in_emul, int *line,
260 int *parsestate, char *word, size_t maxbuflen);
261
262
263 /*
264 * parse_on_off():
265 *
266 * Returns 1 for "on", "yes", "enable", or "1".
267 * Returns 0 for "off", "no", "disable", or "0".
268 * Prints a fatal warning and exit()s for other values.
269 */
270 int parse_on_off(char *s)
271 {
272 if (strcasecmp(s, "on") == 0 || strcasecmp(s, "yes") == 0 ||
273 strcasecmp(s, "enable") == 0 || strcasecmp(s, "1") == 0)
274 return 1;
275 if (strcasecmp(s, "off") == 0 || strcasecmp(s, "no") == 0 ||
276 strcasecmp(s, "disable") == 0 || strcasecmp(s, "0") == 0)
277 return 0;
278
279 fprintf(stderr, "parse_on_off(): WARNING: unknown value '%s'\n", s);
280
281 return 0;
282 }
283
284
285 /*
286 * parse__emul():
287 *
288 * name, net, machine
289 */
290 static void parse__emul(struct emul *e, FILE *f, int *in_emul, int *line,
291 int *parsestate, char *word, size_t maxbuflen)
292 {
293 if (word[0] == ')') {
294 *parsestate = PARSESTATE_NONE;
295 return;
296 }
297
298 if (strcmp(word, "name") == 0) {
299 char tmp[200];
300 read_one_word(f, word, maxbuflen,
301 line, EXPECT_LEFT_PARENTHESIS);
302 read_one_word(f, tmp, sizeof(tmp), line, EXPECT_WORD);
303 read_one_word(f, word, maxbuflen,
304 line, EXPECT_RIGHT_PARENTHESIS);
305 if (e->name != NULL) {
306 free(e->name);
307 e->name = NULL;
308 }
309 e->name = strdup(tmp);
310 if (e->name == NULL) {
311 fprintf(stderr, "out of memory in parse__emul()\n");
312 exit(1);
313 }
314 debug("name: \"%s\"\n", e->name);
315 return;
316 }
317
318 if (strcmp(word, "net") == 0) {
319 *parsestate = PARSESTATE_NET;
320 read_one_word(f, word, maxbuflen,
321 line, EXPECT_LEFT_PARENTHESIS);
322
323 /* Default net: */
324 strlcpy(cur_net_ipv4net, NET_DEFAULT_IPV4_MASK,
325 sizeof(cur_net_ipv4net));
326 snprintf(cur_net_ipv4len, sizeof(cur_net_ipv4len), "%i",
327 NET_DEFAULT_IPV4_LEN);
328 strlcpy(cur_net_local_port, "", sizeof(cur_net_local_port));
329 cur_net_n_remote = 0;
330 return;
331 }
332
333 if (strcmp(word, "machine") == 0) {
334 *parsestate = PARSESTATE_MACHINE;
335 read_one_word(f, word, maxbuflen,
336 line, EXPECT_LEFT_PARENTHESIS);
337
338 /* A "zero state": */
339 cur_machine_name[0] = '\0';
340 cur_machine_cpu[0] = '\0';
341 cur_machine_type[0] = '\0';
342 cur_machine_subtype[0] = '\0';
343 cur_machine_bootname[0] = '\0';
344 cur_machine_bootarg[0] = '\0';
345 cur_machine_n_load = 0;
346 cur_machine_n_disk = 0;
347 cur_machine_n_device = 0;
348 cur_machine_n_x11_disp = 0;
349 cur_machine_slowsi[0] = '\0';
350 cur_machine_prom_emulation[0] = '\0';
351 cur_machine_use_x11[0] = '\0';
352 cur_machine_x11_scaledown[0] = '\0';
353 cur_machine_byte_order[0] = '\0';
354 cur_machine_random_mem[0] = '\0';
355 cur_machine_random_cpu[0] = '\0';
356 cur_machine_force_netboot[0] = '\0';
357 cur_machine_start_paused[0] = '\0';
358 cur_machine_ncpus[0] = '\0';
359 cur_machine_n_gfx_cards[0] = '\0';
360 cur_machine_serial_nr[0] = '\0';
361 cur_machine_emulated_hz[0] = '\0';
362 cur_machine_memory[0] = '\0';
363 return;
364 }
365
366 fatal("line %i: not expecting '%s' in an 'emul' section\n",
367 *line, word);
368 exit(1);
369 }
370
371
372 /*
373 * parse__net():
374 *
375 * Simple words: ipv4net, ipv4len, local_port
376 *
377 * Complex: add_remote
378 *
379 * TODO: more words? for example an option to disable the gateway? that would
380 * have to be implemented correctly in src/net.c first.
381 */
382 static void parse__net(struct emul *e, FILE *f, int *in_emul, int *line,
383 int *parsestate, char *word, size_t maxbuflen)
384 {
385 int i;
386
387 if (word[0] == ')') {
388 /* Finished with the 'net' section. Let's create the net: */
389 if (e->net != NULL) {
390 fatal("line %i: more than one net isn't really "
391 "supported yet\n", *line);
392 exit(1);
393 }
394
395 if (!cur_net_local_port[0])
396 strlcpy(cur_net_local_port, "0",
397 sizeof(cur_net_local_port));
398
399 e->net = net_init(e, NET_INIT_FLAG_GATEWAY,
400 cur_net_ipv4net, atoi(cur_net_ipv4len),
401 cur_net_remote, cur_net_n_remote,
402 atoi(cur_net_local_port), NULL);
403
404 if (e->net == NULL) {
405 fatal("line %i: fatal error: could not create"
406 " the net (?)\n", *line);
407 exit(1);
408 }
409
410 for (i=0; i<cur_net_n_remote; i++) {
411 free(cur_net_remote[i]);
412 cur_net_remote[i] = NULL;
413 }
414
415 *parsestate = PARSESTATE_EMUL;
416 return;
417 }
418
419 WORD("ipv4net", cur_net_ipv4net);
420 WORD("ipv4len", cur_net_ipv4len);
421 WORD("local_port", cur_net_local_port);
422
423 if (strcmp(word, "add_remote") == 0) {
424 read_one_word(f, word, maxbuflen,
425 line, EXPECT_LEFT_PARENTHESIS);
426 if (cur_net_n_remote >= MAX_N_REMOTE) {
427 fprintf(stderr, "too many remote networks\n");
428 exit(1);
429 }
430 cur_net_remote[cur_net_n_remote] = malloc(MAX_REMOTE_LEN);
431 if (cur_net_remote[cur_net_n_remote] == NULL) {
432 fprintf(stderr, "out of memory\n");
433 exit(1);
434 }
435 read_one_word(f, cur_net_remote[cur_net_n_remote],
436 MAX_REMOTE_LEN, line, EXPECT_WORD);
437 cur_net_n_remote ++;
438 read_one_word(f, word, maxbuflen, line,
439 EXPECT_RIGHT_PARENTHESIS);
440 return;
441 }
442
443 fatal("line %i: not expecting '%s' in a 'net' section\n", *line, word);
444 exit(1);
445 }
446
447
448 /*
449 * parse__machine():
450 */
451 static void parse__machine(struct emul *e, FILE *f, int *in_emul, int *line,
452 int *parsestate, char *word, size_t maxbuflen)
453 {
454 int r, i;
455
456 if (word[0] == ')') {
457 /* Finished with the 'machine' section. */
458 struct machine *m;
459
460 if (!cur_machine_name[0])
461 strlcpy(cur_machine_name, "no_name",
462 sizeof(cur_machine_name));
463
464 m = emul_add_machine(e, cur_machine_name);
465
466 r = machine_name_to_type(cur_machine_type, cur_machine_subtype,
467 &m->machine_type, &m->machine_subtype, &m->arch);
468 if (!r)
469 exit(1);
470
471 if (cur_machine_cpu[0])
472 m->cpu_name = strdup(cur_machine_cpu);
473
474 if (!cur_machine_use_x11[0])
475 strlcpy(cur_machine_use_x11, "no",
476 sizeof(cur_machine_use_x11));
477 m->use_x11 = parse_on_off(cur_machine_use_x11);
478
479 if (!cur_machine_slowsi[0])
480 strlcpy(cur_machine_slowsi, "no",
481 sizeof(cur_machine_slowsi));
482 m->slow_serial_interrupts_hack_for_linux =
483 parse_on_off(cur_machine_slowsi);
484
485 if (!cur_machine_prom_emulation[0])
486 strlcpy(cur_machine_prom_emulation, "yes",
487 sizeof(cur_machine_prom_emulation));
488 m->prom_emulation = parse_on_off(cur_machine_prom_emulation);
489
490 if (!cur_machine_random_mem[0])
491 strlcpy(cur_machine_random_mem, "no",
492 sizeof(cur_machine_random_mem));
493 m->random_mem_contents =
494 parse_on_off(cur_machine_random_mem);
495
496 if (!cur_machine_random_cpu[0])
497 strlcpy(cur_machine_random_cpu, "no",
498 sizeof(cur_machine_random_cpu));
499 m->use_random_bootstrap_cpu =
500 parse_on_off(cur_machine_random_cpu);
501
502 m->byte_order_override = NO_BYTE_ORDER_OVERRIDE;
503 if (cur_machine_byte_order[0]) {
504 if (strncasecmp(cur_machine_byte_order, "big", 3) == 0)
505 m->byte_order_override = EMUL_BIG_ENDIAN;
506 else if (strncasecmp(cur_machine_byte_order, "little",
507 6) == 0)
508 m->byte_order_override = EMUL_LITTLE_ENDIAN;
509 else {
510 fatal("Byte order must be big-endian or"
511 " little-endian\n");
512 exit(1);
513 }
514 }
515
516 if (!cur_machine_force_netboot[0])
517 strlcpy(cur_machine_force_netboot, "no",
518 sizeof(cur_machine_force_netboot));
519 m->force_netboot = parse_on_off(cur_machine_force_netboot);
520
521 if (!cur_machine_start_paused[0])
522 strlcpy(cur_machine_start_paused, "no",
523 sizeof(cur_machine_start_paused));
524 m->start_paused = parse_on_off(cur_machine_start_paused);
525
526 /* NOTE: Default nr of CPUs is 0: */
527 if (!cur_machine_ncpus[0])
528 strlcpy(cur_machine_ncpus, "0",
529 sizeof(cur_machine_ncpus));
530 m->ncpus = atoi(cur_machine_ncpus);
531
532 if (cur_machine_n_gfx_cards[0])
533 m->n_gfx_cards = atoi(cur_machine_n_gfx_cards);
534
535 if (cur_machine_serial_nr[0]) {
536 m->serial_nr = atoi(cur_machine_serial_nr);
537 e->next_serial_nr = m->serial_nr+1;
538 }
539
540 if (cur_machine_emulated_hz[0]) {
541 m->emulated_hz = mystrtoull(cur_machine_emulated_hz,
542 NULL, 0);
543 }
544
545 /* NOTE: Default nr of CPUs is 0: */
546 if (!cur_machine_memory[0])
547 strlcpy(cur_machine_memory, "0",
548 sizeof(cur_machine_memory));
549 m->physical_ram_in_mb = atoi(cur_machine_memory);
550
551 if (!cur_machine_x11_scaledown[0])
552 m->x11_scaledown = 1;
553 else {
554 m->x11_scaledown = atoi(cur_machine_x11_scaledown);
555 if (m->x11_scaledown < 0) {
556 m->x11_scaleup = 0 - m->x11_scaledown;
557 m->x11_scaledown = 1;
558 }
559 if (m->x11_scaledown < 1) {
560 fprintf(stderr, "Invalid scaledown value"
561 " (%i)\n", m->x11_scaledown);
562 exit(1);
563 }
564 }
565
566 for (i=0; i<cur_machine_n_disk; i++) {
567 diskimage_add(m, cur_machine_disk[i]);
568 free(cur_machine_disk[i]);
569 cur_machine_disk[i] = NULL;
570 }
571
572 m->boot_kernel_filename = strdup(cur_machine_bootname);
573
574 if (cur_machine_bootarg[0])
575 m->boot_string_argument = strdup(cur_machine_bootarg);
576
577 for (i=0; i<cur_machine_n_x11_disp; i++) {
578 m->x11_n_display_names ++;
579 m->x11_display_names = realloc(
580 m->x11_display_names, m->x11_n_display_names
581 * sizeof(char *));
582 if (m->x11_display_names == NULL) {
583 printf("out of memory\n");
584 exit(1);
585 }
586 m->x11_display_names[m->x11_n_display_names-1] =
587 strdup(cur_machine_x11_disp[i]);
588 if (m->x11_display_names
589 [m->x11_n_display_names-1] == NULL) {
590 printf("out of memory\n");
591 exit(1);
592 }
593 free(cur_machine_x11_disp[i]);
594 cur_machine_x11_disp[i] = NULL;
595 }
596
597 emul_machine_setup(m,
598 cur_machine_n_load, cur_machine_load,
599 cur_machine_n_device, cur_machine_device);
600
601 for (i=0; i<cur_machine_n_device; i++) {
602 free(cur_machine_device[i]);
603 cur_machine_device[i] = NULL;
604 }
605
606 for (i=0; i<cur_machine_n_load; i++) {
607 free(cur_machine_load[i]);
608 cur_machine_load[i] = NULL;
609 }
610
611 *parsestate = PARSESTATE_EMUL;
612 return;
613 }
614
615 WORD("name", cur_machine_name);
616 WORD("cpu", cur_machine_cpu);
617 WORD("type", cur_machine_type);
618 WORD("subtype", cur_machine_subtype);
619 WORD("bootname", cur_machine_bootname);
620 WORD("bootarg", cur_machine_bootarg);
621 WORD("slow_serial_interrupts_hack_for_linux", cur_machine_slowsi);
622 WORD("prom_emulation", cur_machine_prom_emulation);
623 WORD("use_x11", cur_machine_use_x11);
624 WORD("x11_scaledown", cur_machine_x11_scaledown);
625 WORD("byte_order", cur_machine_byte_order);
626 WORD("random_mem_contents", cur_machine_random_mem);
627 WORD("use_random_bootstrap_cpu", cur_machine_random_cpu);
628 WORD("force_netboot", cur_machine_force_netboot);
629 WORD("ncpus", cur_machine_ncpus);
630 WORD("serial_nr", cur_machine_serial_nr);
631 WORD("n_gfx_cards", cur_machine_n_gfx_cards);
632 WORD("emulated_hz", cur_machine_emulated_hz);
633 WORD("memory", cur_machine_memory);
634 WORD("start_paused", cur_machine_start_paused);
635
636 if (strcmp(word, "load") == 0) {
637 read_one_word(f, word, maxbuflen,
638 line, EXPECT_LEFT_PARENTHESIS);
639 if (cur_machine_n_load >= MAX_N_LOAD) {
640 fprintf(stderr, "too many loads\n");
641 exit(1);
642 }
643 cur_machine_load[cur_machine_n_load] = malloc(MAX_LOAD_LEN);
644 if (cur_machine_load[cur_machine_n_load] == NULL) {
645 fprintf(stderr, "out of memory\n");
646 exit(1);
647 }
648 read_one_word(f, cur_machine_load[cur_machine_n_load],
649 MAX_LOAD_LEN, line, EXPECT_WORD);
650 cur_machine_n_load ++;
651 read_one_word(f, word, maxbuflen,
652 line, EXPECT_RIGHT_PARENTHESIS);
653 return;
654 }
655
656 if (strcmp(word, "disk") == 0) {
657 read_one_word(f, word, maxbuflen,
658 line, EXPECT_LEFT_PARENTHESIS);
659 if (cur_machine_n_disk >= MAX_N_DISK) {
660 fprintf(stderr, "too many disks\n");
661 exit(1);
662 }
663 cur_machine_disk[cur_machine_n_disk] = malloc(MAX_DISK_LEN);
664 if (cur_machine_disk[cur_machine_n_disk] == NULL) {
665 fprintf(stderr, "out of memory\n");
666 exit(1);
667 }
668 read_one_word(f, cur_machine_disk[cur_machine_n_disk],
669 MAX_DISK_LEN, line, EXPECT_WORD);
670 cur_machine_n_disk ++;
671 read_one_word(f, word, maxbuflen,
672 line, EXPECT_RIGHT_PARENTHESIS);
673 return;
674 }
675
676 if (strcmp(word, "device") == 0) {
677 read_one_word(f, word, maxbuflen,
678 line, EXPECT_LEFT_PARENTHESIS);
679 if (cur_machine_n_device >= MAX_N_DEVICE) {
680 fprintf(stderr, "too many devices\n");
681 exit(1);
682 }
683 cur_machine_device[cur_machine_n_device] =
684 malloc(MAX_DEVICE_LEN);
685 if (cur_machine_device[cur_machine_n_device] == NULL) {
686 fprintf(stderr, "out of memory\n");
687 exit(1);
688 }
689 read_one_word(f, cur_machine_device[cur_machine_n_device],
690 MAX_DEVICE_LEN, line, EXPECT_WORD);
691 cur_machine_n_device ++;
692 read_one_word(f, word, maxbuflen,
693 line, EXPECT_RIGHT_PARENTHESIS);
694 return;
695 }
696
697 if (strcmp(word, "add_x11_display") == 0) {
698 read_one_word(f, word, maxbuflen,
699 line, EXPECT_LEFT_PARENTHESIS);
700 if (cur_machine_n_x11_disp >= MAX_N_X11_DISP) {
701 fprintf(stderr, "too many x11 displays\n");
702 exit(1);
703 }
704 cur_machine_x11_disp[cur_machine_n_x11_disp] =
705 malloc(MAX_X11_DISP_LEN);
706 if (cur_machine_x11_disp[cur_machine_n_x11_disp] == NULL) {
707 fprintf(stderr, "out of memory\n");
708 exit(1);
709 }
710 read_one_word(f, cur_machine_x11_disp[cur_machine_n_x11_disp],
711 MAX_X11_DISP_LEN, line, EXPECT_WORD);
712 cur_machine_n_x11_disp ++;
713 read_one_word(f, word, maxbuflen,
714 line, EXPECT_RIGHT_PARENTHESIS);
715 return;
716 }
717
718 fatal("line %i: not expecting '%s' in a 'machine' section\n",
719 *line, word);
720 exit(1);
721 }
722
723
724 /*
725 * emul_parse_config():
726 *
727 * Set up an emulation by parsing a config file.
728 */
729 void emul_parse_config(struct emul *e, char *fname)
730 {
731 FILE *f = fopen(fname, "r");
732 char word[MAX_WORD_LEN];
733 int in_emul = 0;
734 int line = 1;
735 int parsestate = PARSESTATE_EMUL;
736
737 /* debug("emul_parse_config()\n"); */
738 if (f == NULL) {
739 perror(fname);
740 exit(1);
741 }
742
743 while (!feof(f)) {
744 read_one_word(f, word, sizeof(word), &line,
745 EXPECT_WORD | EXPECT_RIGHT_PARENTHESIS);
746 if (!word[0])
747 break;
748
749 /* debug("word = '%s'\n", word); */
750
751 switch (parsestate) {
752 case PARSESTATE_EMUL:
753 parse__emul(e, f, &in_emul, &line, &parsestate,
754 word, sizeof(word));
755 break;
756 case PARSESTATE_NET:
757 parse__net(e, f, &in_emul, &line, &parsestate,
758 word, sizeof(word));
759 break;
760 case PARSESTATE_MACHINE:
761 parse__machine(e, f, &in_emul, &line, &parsestate,
762 word, sizeof(word));
763 break;
764 case PARSESTATE_NONE:
765 break;
766 default:
767 fatal("INTERNAL ERROR in emul_parse.c ("
768 "parsestate %i is not imlemented yet?)\n",
769 parsestate);
770 exit(1);
771 }
772 }
773
774 if (parenthesis_level != 0) {
775 fatal("EOF but not enough right parentheses?\n");
776 exit(1);
777 }
778
779 fclose(f);
780 }
781
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