/[gxemul]/trunk/src/cpus/generate_m88k_loadstore.c
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Contents of /trunk/src/cpus/generate_m88k_loadstore.c

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Revision 42 - (show annotations)
Mon Oct 8 16:22:32 2007 UTC (16 years, 5 months ago) by dpavlin
File MIME type: text/plain
File size: 7040 byte(s)
++ trunk/HISTORY	(local)
$Id: HISTORY,v 1.1613 2007/06/15 20:11:26 debug Exp $
20070501	Continuing a little on m88k disassembly (control registers,
		more instructions).
		Adding a dummy mvme88k machine mode.
20070502	Re-adding MIPS load/store alignment exceptions.
20070503	Implementing more of the M88K disassembly code.
20070504	Adding disassembly of some more M88K load/store instructions.
		Implementing some relatively simple M88K instructions (br.n,
		xor[.u] imm, and[.u] imm).
20070505	Implementing M88K three-register and, or, xor, and jmp[.n],
		bsr[.n] including function call trace stuff.
		Applying a patch from Bruce M. Simpson which implements the
		SYSCON_BOARD_CPU_CLOCK_FREQ_ID object of the syscon call in
		the yamon PROM emulation.
20070506	Implementing M88K bb0[.n] and bb1[.n], and skeletons for
		ldcr and stcr (although no control regs are implemented yet).
20070509	Found and fixed the bug which caused Linux for QEMU_MIPS to
		stop working in 0.4.5.1: It was a faulty change to the MIPS
		'sc' and 'scd' instructions I made while going through gcc -W
		warnings on 20070428.
20070510	Updating the Linux/QEMU_MIPS section in guestoses.html to
		use mips-test-0.2.tar.gz instead of 0.1.
		A big thank you to Miod Vallat for sending me M88K manuals.
		Implementing more M88K instructions (addu, subu, div[u], mulu,
		ext[u], clr, set, cmp).
20070511	Fixing bugs in the M88K "and" and "and.u" instructions (found
		by comparing against the manual).
		Implementing more M88K instructions (mask[.u], mak, bcnd (auto-
		generated)) and some more control register details.
		Cleanup: Removing the experimental AVR emulation mode and
		corresponding devices; AVR emulation wasn't really meaningful.
		Implementing autogeneration of most M88K loads/stores. The
		rectangle drawing demo (with -O0) for M88K runs :-)
		Beginning on M88K exception handling.
		More M88K instructions: tb0, tb1, rte, sub, jsr[.n].
		Adding some skeleton MVME PROM ("BUG") emulation.
20070512	Fixing a bug in the M88K cmp instruction.
		Adding the M88K lda (scaled register) instruction.
		Fixing bugs in 64-bit (32-bit pairs) M88K loads/stores.
		Removing the unused tick_hz stuff from the machine struct.
		Implementing the M88K xmem instruction. OpenBSD/mvme88k gets
		far enough to display the Copyright banner :-)
		Implementing subu.co (guess), addu.co, addu.ci, ff0, and ff1.
		Adding a dev_mvme187, for MVME187-specific devices/registers.
		OpenBSD/mvme88k prints more boot messages. :)
20070515	Continuing on MVME187 emulation (adding more devices, beginning
		on the CMMUs, etc).
		Adding the M88K and.c, xor.c, and or.c instructions, and making
		sure that mul, div, etc cause exceptions if executed when SFD1
		is disabled.
20070517	Continuing on M88K and MVME187 emulation in general; moving
		the CMMU registers to the CPU struct, separating dev_pcc2 from
		dev_mvme187, and beginning on memory_m88k.c (BATC and PATC).
		Fixing a bug in 64-bit (32-bit pairs) M88K fast stores.
		Implementing the clock part of dev_mk48txx.
		Implementing the M88K fstcr and xcr instructions.
		Implementing m88k_cpu_tlbdump().
		Beginning on the implementation of a separate address space
		for M88K .usr loads/stores.
20070520	Removing the non-working (skeleton) Sandpoint, SonyNEWS, SHARK
		Dnard, and Zaurus machine modes.
		Experimenting with dyntrans to_be_translated read-ahead. It
		seems to give a very small performance increase for MIPS
		emulation, but a large performance degradation for SuperH. Hm.
20070522	Disabling correct SuperH ITLB emulation; it does not seem to be
		necessary in order to let SH4 guest OSes run, and it slows down
		userspace code.
		Implementing "samepage" branches for SuperH emulation, and some
		other minor speed hacks.
20070525	Continuing on M88K memory-related stuff: exceptions, memory
		transaction register contents, etc.
		Implementing the M88K subu.ci instruction.
		Removing the non-working (skeleton) Iyonix machine mode.
		OpenBSD/mvme88k reaches userland :-), starts executing
		/sbin/init's instructions, and issues a few syscalls, before
		crashing.
20070526	Fixing bugs in dev_mk48txx, so that OpenBSD/mvme88k detects
		the correct time-of-day.
		Implementing a generic IRQ controller for the test machines
		(dev_irqc), similar to a proposed patch from Petr Stepan.
		Experimenting some more with translation read-ahead.
		Adding an "expect" script for automated OpenBSD/landisk
		install regression/performance tests.
20070527	Adding a dummy mmEye (SH3) machine mode skeleton.
		FINALLY found the strange M88K bug I have been hunting: I had
		not emulated the SNIP value for exceptions occurring in
		branch delay slots correctly.
		Implementing correct exceptions for 64-bit M88K loads/stores.
		Address to symbol lookups are now disabled when M88K is
		running in usermode (because usermode addresses don't have
		anything to do with supervisor addresses).
20070531	Removing the mmEye machine mode skeleton.
20070604	Some minor code cleanup.
20070605	Moving src/useremul.c into a subdir (src/useremul/), and
		cleaning up some more legacy constructs.
		Adding -Wstrict-aliasing and -fstrict-aliasing detection to
		the configure script.
20070606	Adding a check for broken GCC on Solaris to the configure
		script. (GCC 3.4.3 on Solaris cannot handle static variables
		which are initialized to 0 or NULL. :-/)
		Removing the old (non-working) ARC emulation modes: NEC RD94,
		R94, R96, and R98, and the last traces of Olivetti M700 and
		Deskstation Tyne.
		Removing the non-working skeleton WDSC device (dev_wdsc).
20070607	Thinking about how to use the host's cc + ld at runtime to
		generate native code. (See experiments/native_cc_ld_test.i
		for an example.)
20070608	Adding a program counter sampling timer, which could be useful
		for native code generation experiments.
		The KN02_CSR_NRMMOD bit in the DECstation 5000/200 (KN02) CSR
		should always be set, to allow a 5000/200 PROM to boot.
20070609	Moving out breakpoint details from the machine struct into
		a helper struct, and removing the limit on max nr of
		breakpoints.
20070610	Moving out tick functions into a helper struct as well (which
		also gets rid of the max limit).
20070612	FINALLY figured out why Debian/DECstation stopped working when
		translation read-ahead was enabled: in src/memory_rw.c, the
		call to invalidate_code_translation was made also if the
		memory access was an instruction load (if the page was mapped
		as writable); it shouldn't be called in that case.
20070613	Implementing some more MIPS32/64 revision 2 instructions: di,
		ei, ext, dext, dextm, dextu, and ins.
20070614	Implementing an instruction combination for the NetBSD/arm
		idle loop (making the host not use any cpu if NetBSD/arm
		inside the emulator is not using any cpu).
		Increasing the nr of ARM VPH entries from 128 to 384.
20070615	Removing the ENABLE_arch stuff from the configure script, so
		that all included architectures are included in both release
		and development builds.
		Moving memory related helper functions from misc.c to memory.c.
		Adding preliminary instructions for netbooting NetBSD/pmppc to
		guestoses.html; it doesn't work yet, there are weird timeouts.
		Beginning a total rewrite of the userland emulation modes
		(removing all emulation modes, beginning from scratch with
		NetBSD/MIPS and FreeBSD/Alpha only).
20070616	After fixing a bug in the DEC21143 NIC (the TDSTAT_OWN bit was
		only cleared for the last segment when transmitting, not all
		segments), NetBSD/pmppc boots with root-on-nfs without the
		timeouts. Updating guestoses.html.
		Removing the skeleton PSP (Playstation Portable) mode.
		Moving X11-related stuff in the machine struct into a helper
		struct.
		Cleanup of out-of-memory checks, to use a new CHECK_ALLOCATION
		macro (which prints a meaningful error message).
		Adding a COMMENT to each machine and device (for automagic
		.index comment generation).
		Doing regression testing for the next release.

==============  RELEASE 0.4.6  ==============


1 /*
2 * Copyright (C) 2007 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: generate_m88k_loadstore.c,v 1.1 2007/05/11 09:28:35 debug Exp $
29 *
30 * Automatic generation of M88K loads and stores:
31 *
32 * 2 bits size (0=byte, 1=halfword, 2=word, 3=doubleword)
33 * 1 bit load/store
34 * 1 bit signedness (for byte and halfword loads only!)
35 * 1 bit endianness
36 * 1 bit scaledness (for halfword, word, and doublewords only,
37 * and only when using register offset)
38 * 1 bit ".usr" (only when using register offset)
39 * 1 bit registeroffset
40 */
41
42 #include <stdio.h>
43 #include <string.h>
44
45
46 #define M88K_LOADSTORE_STORE 4
47 #define M88K_LOADSTORE_SIGNEDNESS 8
48 #define M88K_LOADSTORE_ENDIANNESS 16
49 #define M88K_LOADSTORE_SCALEDNESS 32
50 #define M88K_LOADSTORE_USR 64
51 #define M88K_LOADSTORE_REGISTEROFFSET 128
52
53
54 int generated_functions = 0;
55
56
57 void print_function_name(int size, int store, int signedness,
58 int endianness, int scaledness, int usr, int registeroffset)
59 {
60 if (store)
61 printf("st");
62 else {
63 printf("ld");
64 if (!signedness)
65 printf("_u");
66 }
67 printf("_%i", 1 << size);
68
69 if (endianness >= 0) {
70 /* Special case so that Byte loads/stores are only
71 included ones (for little endian): */
72 if (size == 0 && endianness)
73 printf("_le");
74 else
75 printf(endianness? "_be" : "_le");
76 }
77
78 if (scaledness && size > 0)
79 printf("_scaled");
80
81 if (usr)
82 printf("_usr");
83
84 if (registeroffset)
85 printf("_regofs");
86 }
87
88
89 void loadstore(int size, int store, int signedness,
90 int endianness, int scaledness, int usr, int registeroffset)
91 {
92 if (store && signedness)
93 return;
94
95 if (size == 0 && endianness)
96 return;
97
98 if (size == 0 && scaledness)
99 return;
100
101 if (!registeroffset && usr)
102 return;
103
104 if (!registeroffset && scaledness)
105 return;
106
107 if (store)
108 printf("#define LS_STORE\n");
109 else
110 printf("#define LS_LOAD\n");
111
112 printf("#define LS_N m88k_instr_");
113 print_function_name(size, store, signedness, endianness,
114 scaledness, usr, registeroffset);
115 printf("\n");
116
117 printf("#define LS_GENERIC_N m88k_generic_");
118 print_function_name(size, store, signedness, -1,
119 scaledness, usr, registeroffset);
120 printf("\n");
121
122 printf("#define LS_%i\n", 1 << size);
123 printf("#define LS_SIZE %i\n", 1 << size);
124
125 if (signedness && !store)
126 printf("#define LS_SIGNED\n");
127
128 if (endianness)
129 printf("#define LS_BE\n");
130 else
131 printf("#define LS_LE\n");
132
133 if (endianness == 0)
134 printf("#define LS_INCLUDE_GENERIC\n");
135
136 if (scaledness)
137 printf("#define LS_SCALED\n");
138
139 if (usr)
140 printf("#define LS_USR\n");
141
142 if (registeroffset)
143 printf("#define LS_REGOFS\n");
144
145 printf("#include \"cpu_m88k_instr_loadstore.c\"\n");
146 generated_functions ++;
147
148 if (registeroffset)
149 printf("#undef LS_REGOFS\n");
150
151 if (usr)
152 printf("#undef LS_USR\n");
153
154 if (scaledness)
155 printf("#undef LS_SCALED\n");
156
157 if (endianness == 0)
158 printf("#undef LS_INCLUDE_GENERIC\n");
159
160 if (endianness)
161 printf("#undef LS_BE\n");
162 else
163 printf("#undef LS_LE\n");
164
165 if (signedness && !store)
166 printf("#undef LS_SIGNED\n");
167
168 printf("#undef LS_SIZE\n");
169 printf("#undef LS_%i\n", 1 << size);
170
171 printf("#undef LS_GENERIC_N\n");
172 printf("#undef LS_N\n");
173
174 if (store)
175 printf("#undef LS_STORE\n");
176 else
177 printf("#undef LS_LOAD\n");
178 }
179
180
181 int main(int argc, char *argv[])
182 {
183 int size, store, signedness, endianness, scaledness, usr,
184 registeroffset;
185
186 printf("\n/* AUTOMATICALLY GENERATED! Do not edit. */\n\n");
187
188 for (registeroffset=0; registeroffset<=M88K_LOADSTORE_REGISTEROFFSET;
189 registeroffset+=M88K_LOADSTORE_REGISTEROFFSET)
190 for (usr=0; usr<=M88K_LOADSTORE_USR; usr+=M88K_LOADSTORE_USR)
191 for (scaledness=0; scaledness<=M88K_LOADSTORE_SCALEDNESS;
192 scaledness+=M88K_LOADSTORE_SCALEDNESS)
193 for (endianness=0; endianness<=M88K_LOADSTORE_ENDIANNESS;
194 endianness+=M88K_LOADSTORE_ENDIANNESS)
195 for (signedness=0; signedness<=M88K_LOADSTORE_SIGNEDNESS;
196 signedness+=M88K_LOADSTORE_SIGNEDNESS)
197 for (store=0; store<=M88K_LOADSTORE_STORE;
198 store+=M88K_LOADSTORE_STORE)
199 for (size=0; size<=3; size++)
200 loadstore(size, store, signedness,
201 endianness, scaledness, usr, registeroffset);
202
203 /* Array of pointers to fast load/store functions: */
204 printf("\n\nvoid (*m88k_loadstore[256])(struct cpu *, struct "
205 "m88k_instr_call *) = {\n");
206 for (registeroffset=0; registeroffset<=M88K_LOADSTORE_REGISTEROFFSET;
207 registeroffset+=M88K_LOADSTORE_REGISTEROFFSET)
208 for (usr=0; usr<=M88K_LOADSTORE_USR; usr+=M88K_LOADSTORE_USR)
209 for (scaledness=0; scaledness<=M88K_LOADSTORE_SCALEDNESS;
210 scaledness+=M88K_LOADSTORE_SCALEDNESS)
211 for (endianness=0; endianness<=M88K_LOADSTORE_ENDIANNESS;
212 endianness+=M88K_LOADSTORE_ENDIANNESS)
213 for (signedness=0; signedness<=M88K_LOADSTORE_SIGNEDNESS;
214 signedness+=M88K_LOADSTORE_SIGNEDNESS)
215 for (store=0; store<=M88K_LOADSTORE_STORE;
216 store+=M88K_LOADSTORE_STORE)
217 for (size=0; size<=3; size++) {
218 if (store || size || signedness || endianness
219 || scaledness || usr || registeroffset)
220 printf(",\n");
221
222 if (store && signedness) {
223 printf("\tNULL");
224 continue;
225 }
226
227 if (!registeroffset && usr) {
228 printf("\tNULL");
229 continue;
230 }
231
232 if (!registeroffset && scaledness) {
233 printf("\tNULL");
234 continue;
235 }
236
237 if (size == 0 && scaledness) {
238 printf("\tNULL");
239 continue;
240 }
241
242 printf("\tm88k_instr_");
243 print_function_name(size, store, signedness,
244 endianness, scaledness, usr, registeroffset);
245 }
246 printf(" };\n");
247
248 fprintf(stderr, "%s: generated_functions = %i\n",
249 argv[0], generated_functions);
250
251 return 0;
252 }
253

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