/[gxemul]/trunk/src/emul_parse.c
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Revision 32 - (hide annotations)
Mon Oct 8 16:20:58 2007 UTC (16 years, 6 months ago) by dpavlin
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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 dpavlin 2 /*
2 dpavlin 22 * Copyright (C) 2005-2006 Anders Gavare. All rights reserved.
3 dpavlin 2 *
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 dpavlin 32 * $Id: emul_parse.c,v 1.44 2006/09/05 06:13:27 debug Exp $
29 dpavlin 2 *
30     * Set up an emulation by parsing a config file.
31     *
32 dpavlin 24 * TODO: REWRITE THIS FROM SCRATCH! :-)
33 dpavlin 2 */
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 dpavlin 24 #define MAX_WORD_LEN 200
51 dpavlin 2
52     #define EXPECT_WORD 1
53     #define EXPECT_LEFT_PARENTHESIS 2
54     #define EXPECT_RIGHT_PARENTHESIS 4
55    
56 dpavlin 24 static int parenthesis_level = 0;
57 dpavlin 2
58 dpavlin 24
59 dpavlin 2 /*
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 dpavlin 24 parenthesis_level ++;
178 dpavlin 2 buf[curlen++] = ch;
179     break;
180     }
181     if ((expect & EXPECT_RIGHT_PARENTHESIS) && ch == ')') {
182 dpavlin 24 parenthesis_level --;
183 dpavlin 2 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 dpavlin 10 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 dpavlin 2
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 dpavlin 24 static void parse__machine(struct emul *e, FILE *f, int *in_emul, int *line,
260     int *parsestate, char *word, size_t maxbuflen);
261 dpavlin 2
262 dpavlin 24
263 dpavlin 2 /*
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 dpavlin 24 fprintf(stderr, "parse_on_off(): WARNING: unknown value '%s'\n", s);
280 dpavlin 2
281 dpavlin 24 return 0;
282 dpavlin 2 }
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 dpavlin 32 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 dpavlin 10 strlcpy(cur_net_local_port, "", sizeof(cur_net_local_port));
329     cur_net_n_remote = 0;
330 dpavlin 2 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 dpavlin 10 * Simple words: ipv4net, ipv4len, local_port
376 dpavlin 2 *
377 dpavlin 10 * Complex: add_remote
378     *
379 dpavlin 2 * 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 dpavlin 10 int i;
386    
387 dpavlin 2 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 dpavlin 10 if (!cur_net_local_port[0])
396     strlcpy(cur_net_local_port, "0",
397     sizeof(cur_net_local_port));
398    
399 dpavlin 2 e->net = net_init(e, NET_INIT_FLAG_GATEWAY,
400 dpavlin 10 cur_net_ipv4net, atoi(cur_net_ipv4len),
401     cur_net_remote, cur_net_n_remote,
402 dpavlin 32 atoi(cur_net_local_port), NULL);
403 dpavlin 2
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 dpavlin 10 for (i=0; i<cur_net_n_remote; i++) {
411     free(cur_net_remote[i]);
412     cur_net_remote[i] = NULL;
413     }
414    
415 dpavlin 2 *parsestate = PARSESTATE_EMUL;
416     return;
417     }
418    
419     WORD("ipv4net", cur_net_ipv4net);
420     WORD("ipv4len", cur_net_ipv4len);
421 dpavlin 10 WORD("local_port", cur_net_local_port);
422 dpavlin 2
423 dpavlin 10 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 dpavlin 2 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 dpavlin 10 strlcpy(cur_machine_name, "no_name",
462     sizeof(cur_machine_name));
463 dpavlin 2
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 dpavlin 10 strlcpy(cur_machine_use_x11, "no",
476     sizeof(cur_machine_use_x11));
477 dpavlin 2 m->use_x11 = parse_on_off(cur_machine_use_x11);
478    
479     if (!cur_machine_slowsi[0])
480 dpavlin 10 strlcpy(cur_machine_slowsi, "no",
481     sizeof(cur_machine_slowsi));
482 dpavlin 2 m->slow_serial_interrupts_hack_for_linux =
483     parse_on_off(cur_machine_slowsi);
484    
485     if (!cur_machine_prom_emulation[0])
486 dpavlin 10 strlcpy(cur_machine_prom_emulation, "yes",
487     sizeof(cur_machine_prom_emulation));
488 dpavlin 2 m->prom_emulation = parse_on_off(cur_machine_prom_emulation);
489    
490     if (!cur_machine_random_mem[0])
491 dpavlin 10 strlcpy(cur_machine_random_mem, "no",
492     sizeof(cur_machine_random_mem));
493 dpavlin 2 m->random_mem_contents =
494     parse_on_off(cur_machine_random_mem);
495    
496     if (!cur_machine_random_cpu[0])
497 dpavlin 10 strlcpy(cur_machine_random_cpu, "no",
498     sizeof(cur_machine_random_cpu));
499 dpavlin 2 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 dpavlin 10 strlcpy(cur_machine_force_netboot, "no",
518     sizeof(cur_machine_force_netboot));
519 dpavlin 2 m->force_netboot = parse_on_off(cur_machine_force_netboot);
520    
521     if (!cur_machine_start_paused[0])
522 dpavlin 10 strlcpy(cur_machine_start_paused, "no",
523     sizeof(cur_machine_start_paused));
524 dpavlin 2 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 dpavlin 10 strlcpy(cur_machine_ncpus, "0",
529     sizeof(cur_machine_ncpus));
530 dpavlin 2 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 dpavlin 10 strlcpy(cur_machine_memory, "0",
548     sizeof(cur_machine_memory));
549 dpavlin 2 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 dpavlin 20 m->x11_scaleup = 0 - m->x11_scaledown;
557     m->x11_scaledown = 1;
558     }
559     if (m->x11_scaledown < 1) {
560 dpavlin 2 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 dpavlin 24 void emul_parse_config(struct emul *e, char *fname)
730 dpavlin 2 {
731 dpavlin 24 FILE *f = fopen(fname, "r");
732     char word[MAX_WORD_LEN];
733 dpavlin 2 int in_emul = 0;
734     int line = 1;
735 dpavlin 24 int parsestate = PARSESTATE_EMUL;
736 dpavlin 2
737     /* debug("emul_parse_config()\n"); */
738 dpavlin 24 if (f == NULL) {
739     perror(fname);
740     exit(1);
741     }
742 dpavlin 2
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 dpavlin 24 case PARSESTATE_NONE:
765     break;
766 dpavlin 2 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 dpavlin 24 if (parenthesis_level != 0) {
775 dpavlin 2 fatal("EOF but not enough right parentheses?\n");
776     exit(1);
777     }
778 dpavlin 24
779     fclose(f);
780 dpavlin 2 }
781    
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