/[gxemul]/trunk/src/cpus/generate_arm_r.c
This is repository of my old source code which isn't updated any more. Go to git.rot13.org for current projects!
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Contents of /trunk/src/cpus/generate_arm_r.c

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Revision 34 - (show annotations)
Mon Oct 8 16:21:17 2007 UTC (13 years, 3 months ago) by dpavlin
File MIME type: text/plain
File size: 9846 byte(s)
++ trunk/HISTORY	(local)
$Id: HISTORY,v 1.1480 2007/02/19 01:34:42 debug Exp $
20061029	Changing usleep(1) calls in the debugger to usleep(10000)
20061107	Adding a new disk image option (-d o...) which sets the ISO9660
		filesystem base offset; also making some other hacks to allow
		NetBSD/dreamcast and homebrew demos/games to boot directly
		from a filesystem image.
		Moving Dreamcast-specific stuff in the documentation to its
		own page (dreamcast.html).
		Adding a border to the Dreamcast PVR framebuffer.
20061108	Adding a -T command line option (again?), for halting the
		emulator on unimplemented memory accesses.
20061109	Continuing on various SH4 and Dreamcast related things.
		The emulator should now halt on more unimplemented device
		accesses, instead of just printing a warning, forcing me to
		actually implement missing stuff :)
20061111	Continuing on SH4 and Dreamcast stuff.
		Adding a bogus Landisk (SH4) machine mode.
20061112	Implementing some parts of the Dreamcast GDROM device. With
		some ugly hacks, NetBSD can (barely) mount an ISO image.
20061113	NetBSD/dreamcast now starts booting from the Live CD image,
		but crashes randomly quite early on in the boot process.
20061122	Beginning on a skeleton interrupt.h and interrupt.c for the
		new interrupt subsystem.
20061124	Continuing on the new interrupt system; taking the first steps
		to attempt to connect CPUs (SuperH and MIPS) and devices
		(dev_cons and SH4 timer interrupts) to it. Many things will
		probably break from now on.
20061125	Converting dev_ns16550, dev_8253 to the new interrupt system.
		Attempting to begin to convert the ISA bus.
20061130	Incorporating a patch from Brian Foley for the configure
		script, which checks for X11 libs in /usr/X11R6/lib64 (which
		is used on some Linux systems).
20061227	Adding a note in the man page about booting from Dreamcast
		CDROM images (i.e. that no external kernel is needed).
20061229	Continuing on the interrupt system rewrite: beginning to
		convert more devices, adding abort() calls for legacy interrupt
		system calls so that everything now _has_ to be rewritten!
		Almost all machine modes are now completely broken.
20061230	More progress on removing old interrupt code, mostly related
		to the ISA bus + devices, the LCA bus (on AlphaBook1), and
		the Footbridge bus (for CATS). And some minor PCI stuff.
		Connecting the ARM cpu to the new interrupt system.
		The CATS, NetWinder, and QEMU_MIPS machine modes now work with
		the new interrupt system :)
20061231	Connecting PowerPC CPUs to the new interrupt system.
		Making PReP machines (IBM 6050) work again.
		Beginning to convert the GT PCI controller (for e.g. Malta
		and Cobalt emulation). Some things work, but not everything.
		Updating Copyright notices for 2007.
20070101	Converting dev_kn02 from legacy style to devinit; the 3max
		machine mode now works with the new interrupt system :-]
20070105	Beginning to convert the SGI O2 machine to the new interrupt
		system; finally converting O2 (IP32) devices to devinit, etc.
20070106	Continuing on the interrupt system redesign/rewrite; KN01
		(PMAX), KN230, and Dreamcast ASIC interrupts should work again,
		moving out stuff from machine.h and devices.h into the
		corresponding devices, beginning the rewrite of i80321
		interrupts, etc.
20070107	Beginning on the rewrite of Eagle interrupt stuff (PReP, etc).
20070117	Beginning the rewrite of Algor (V3) interrupts (finally
		changing dev_v3 into devinit style).
20070118	Removing the "bus" registry concept from machine.h, because
		it was practically meaningless.
		Continuing on the rewrite of Algor V3 ISA interrupts.
20070121	More work on Algor interrupts; they are now working again,
		well enough to run NetBSD/algor. :-)
20070122	Converting VR41xx (HPCmips) interrupts. NetBSD/hpcmips
		can be installed using the new interrupt system :-)
20070123	Making the testmips mode work with the new interrupt system.
20070127	Beginning to convert DEC5800 devices to devinit, and to the
		new interrupt system.
		Converting Playstation 2 devices to devinit, and converting
		the interrupt system. Also fixing a severe bug: the interrupt
		mask register on Playstation 2 is bitwise _toggled_ on writes.
20070128	Removing the dummy NetGear machine mode and the 8250 device
		(which was only used by the NetGear machine).
		Beginning to convert the MacPPC GC (Grand Central) interrupt
		controller to the new interrupt system.
		Converting Jazz interrupts (PICA61 etc.) to the new interrupt
		system. NetBSD/arc can be installed again :-)
		Fixing the JAZZ timer (hardcoding it at 100 Hz, works with
		NetBSD and it is better than a completely dummy timer as it
		was before).
		Converting dev_mp to the new interrupt system, although I
		haven't had time to actually test it yet.
		Completely removing src/machines/interrupts.c, cpu_interrupt
		and cpu_interrupt_ack in src/cpu.c, and
		src/include/machine_interrupts.h! Adding fatal error messages
		+ abort() in the few places that are left to fix.
		Converting dev_z8530 to the new interrupt system.
		FINALLY removing the md_int struct completely from the
		machine struct.
		SH4 fixes (adding a PADDR invalidation in the ITLB replacement
		code in memory_sh.c); the NetBSD/dreamcast LiveCD now runs
		all the way to the login prompt, and can be interacted with :-)
		Converting the CPC700 controller (PCI and interrupt controller
		for PM/PPC) to the new interrupt system.
20070129	Fixing MACE ISA interrupts (SGI IP32 emulation). Both NetBSD/
		sgimips' and OpenBSD/sgi's ramdisk kernels can now be
		interacted with again.
20070130	Moving out the MIPS multi_lw and _sw instruction combinations
		so that they are auto-generated at compile time instead.
20070131	Adding detection of amd64/x86_64 hosts in the configure script,
		for doing initial experiments (again :-) with native code
		generation.
		Adding a -k command line option to set the size of the dyntrans
		cache, and a -B command line option to disable native code
		generation, even if GXemul was compiled with support for
		native code generation for the specific host CPU architecture.
20070201	Experimenting with a skeleton for native code generation.
		Changing the default behaviour, so that native code generation
		is now disabled by default, and has to be enabled by using
		-b on the command line.
20070202	Continuing the native code generation experiments.
		Making PCI interrupts work for Footbridge again.
20070203	More native code generation experiments.
		Removing most of the native code generation experimental code,
		it does not make sense to include any quick hacks like this.
		Minor cleanup/removal of some more legacy MIPS interrupt code.
20070204	Making i80321 interrupts work again (for NetBSD/evbarm etc.),
		and fixing the timer at 100 Hz.
20070206	Experimenting with removing the wdc interrupt slowness hack.
20070207	Lowering the number of dyntrans TLB entries for MIPS from
		192 to 128, resulting in a minor speed improvement.
		Minor optimization to the code invalidation routine in
		cpu_dyntrans.c.
20070208	Increasing (experimentally) the nr of dyntrans instructions per
		loop from 60 to 120.
20070210	Commenting out (experimentally) the dyntrans_device_danger
		detection in memory_rw.c.
		Changing the testmips and baremips machines to use a revision 2
		MIPS64 CPU by default, instead of revision 1.
		Removing the dummy i960, IA64, x86, AVR32, and HP PA-RISC
		files, the PC bios emulation, and the Olivetti M700 (ARC) and
		db64360 emulation modes.
20070211	Adding an "mp" demo to the demos directory, which tests the
		SMP functionality of the testmips machine.
		Fixing PReP interrupts some more. NetBSD/prep now boots again.
20070216	Adding a "nop workaround" for booting Mach/PMAX to the
		documentation; thanks to Artur Bujdoso for the values.
		Converting more of the MacPPC interrupt stuff to the new
		system.
		Beginning to convert BeBox interrupts to the new system.
		PPC603e should NOT have the PPC_NO_DEC flag! Removing it.
		Correcting BeBox clock speed (it was set to 100 in the NetBSD
		bootinfo block, but should be 33000000/4), allowing NetBSD
		to start without using the (incorrect) PPC_NO_DEC hack.
20070217	Implementing (slow) AltiVec vector loads and stores, allowing
		NetBSD/macppc to finally boot using the GENERIC kernel :-)
		Updating the documentation with install instructions for
		NetBSD/macppc.
20070218-19	Regression testing for the release.

==============  RELEASE 0.4.4  ==============


1 /*
2 * Copyright (C) 2005-2007 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_arm_r.c,v 1.6 2006/12/30 13:30:56 debug Exp $
29 *
30 * Generate functions for computing "reg" operands.
31 */
32
33 #include <stdio.h>
34 #include <stdlib.h>
35
36
37 void sync_pc(void)
38 {
39 printf("\tuint32_t tmp, low_pc = ((size_t)ic - (size_t)\n"
40 "\t cpu->cd.arm.cur_ic_page)/sizeof(struct arm_instr_call);\n");
41 printf("\ttmp = cpu->pc & ~((ARM_IC_ENTRIES_PER_PAGE-1) <<\n"
42 "\t ARM_INSTR_ALIGNMENT_SHIFT);\n");
43 printf("\ttmp += (low_pc << ARM_INSTR_ALIGNMENT_SHIFT) + 8;\n");
44 }
45
46
47 void f(int s, int func, int only_name)
48 {
49 int rm = func & 15;
50 int c = (func >> 7) & 31;
51 int t = (func >> 4) & 7;
52 char name[200];
53 int pc = rm == 15, rc = c >> 1;
54
55 snprintf(name, sizeof(name), "arm_r%s_r%i_t%i_c%i", s? "s" : "",
56 rm, t, c);
57 if (only_name) {
58 printf("%s", name);
59 return;
60 }
61
62 printf("uint32_t %s(struct cpu *cpu, struct arm_instr_call *ic)"
63 " {\n", name);
64 if (pc)
65 sync_pc();
66
67 switch (t) {
68
69 case 0: /* lsl c (Logical Shift Left by constant) */
70 if (s) {
71 printf("{ uint32_t x = ");
72 if (pc)
73 printf("tmp");
74 else
75 printf("cpu->cd.arm.r[%i]", rm);
76 printf(";\n");
77 if (c != 0) {
78 printf("cpu->cd.arm.flags &= ~ARM_F_C;\n");
79 printf("if (x & 0x%x)\n"
80 "\tcpu->cd.arm.flags |= ARM_F_C;\n",
81 (int)(0x80000000 >> (c-1)));
82 printf("x <<= %i;\n", c);
83 }
84 printf(" return x; }\n");
85 } else {
86 if (pc)
87 printf("\treturn tmp");
88 else
89 printf("\treturn cpu->cd.arm.r[%i]", rm);
90 if (c != 0)
91 printf(" << %i", c);
92 printf(";\n");
93 }
94 break;
95
96 case 1: /* lsl Rc (Logical Shift Left by register) */
97 if (s) {
98 printf("{ uint32_t x = ");
99 if (pc)
100 printf("tmp");
101 else
102 printf("cpu->cd.arm.r[%i]", rm);
103 printf(";\n");
104 printf(" uint32_t y = cpu->cd.arm.r[%i] & 255;\n", rc);
105 printf(" if (y != 0) {\n");
106 printf(" cpu->cd.arm.flags &= ~ARM_F_C;\n");
107 printf(" if (y >= 32) return 0;\n");
108 printf(" x <<= (y - 1);\n");
109 printf(" if (x & 0x80000000)\n"
110 "\tcpu->cd.arm.flags |= ARM_F_C;\n");
111 printf(" x <<= 1;\n");
112 printf(" }\n");
113 printf(" return x; }\n");
114 } else {
115 printf("{ uint32_t y = cpu->cd.arm.r[%i] & 255;\n", rc);
116 printf(" uint32_t x =");
117 if (pc)
118 printf("tmp");
119 else
120 printf("cpu->cd.arm.r[%i]", rm);
121 printf(";\n");
122 printf("if (y > 31) return 0; else x <<= y;\n");
123 printf("return x; }\n");
124 }
125 break;
126
127 case 2: /* lsr c (Logical Shift Right by constant) */
128 /* 1..32 */
129 if (s) {
130 printf("{ uint32_t x = ");
131 if (pc)
132 printf("tmp");
133 else
134 printf("cpu->cd.arm.r[%i]", rm);
135 printf(";\n");
136 if (c == 0)
137 c = 32;
138 printf("cpu->cd.arm.flags &= ~ARM_F_C;\n");
139 printf("if (x & 0x%x)\n"
140 "\tcpu->cd.arm.flags |= ARM_F_C;\n",
141 (int)(1 << (c-1)));
142 if (c == 32)
143 printf("x = 0;\n");
144 else
145 printf("x >>= %i;\n", c);
146 printf(" return x; }\n");
147 } else {
148 if (c == 0)
149 printf("\treturn 0;\n");
150 else {
151 if (pc)
152 printf("\treturn tmp");
153 else
154 printf("\treturn cpu->cd.arm.r[%i]",rm);
155 printf(" >> %i;\n", c);
156 }
157 }
158 break;
159
160 case 3: /* lsr Rc (Logical Shift Right by register) */
161 if (s) {
162 printf("{ uint32_t x = ");
163 if (pc)
164 printf("tmp");
165 else
166 printf("cpu->cd.arm.r[%i]", rm);
167 printf(",y=cpu->cd.arm.r[%i]&255;\n", rc);
168 printf("if(y==0) return x;\n");
169 printf("cpu->cd.arm.flags &= ~ARM_F_C;\n");
170 printf("if(y>31) y=32;\n");
171 printf("y--; x >>= y;\n");
172 printf("if (x & 1) "
173 "cpu->cd.arm.flags |= ARM_F_C;\n");
174 printf(" return x >> 1; }\n");
175 } else {
176 printf("{ uint32_t y=cpu->cd.arm.r[%i]&255;\n", rc);
177 printf("uint32_t x=");
178 if (pc)
179 printf("tmp");
180 else
181 printf("cpu->cd.arm.r[%i]",rm);
182 printf("; ");
183 printf("if (y>=32) return 0;\n");
184 printf("return x >> y; } ");
185 }
186 break;
187
188 case 4: /* asr c (Arithmetic Shift Right by constant) */
189 /* 1..32 */
190 if (s) {
191 printf("{ int32_t x = ");
192 if (pc)
193 printf("tmp");
194 else
195 printf("cpu->cd.arm.r[%i]", rm);
196 printf(";\n");
197 if (c == 0)
198 c = 32;
199 printf("cpu->cd.arm.flags &= ~ARM_F_C;\n");
200 printf("if (x & 0x%x)\n"
201 "\tcpu->cd.arm.flags |= ARM_F_C;\n",
202 (int)(1 << (c-1)));
203 if (c == 32)
204 printf("x = (x<0)? 0xffffffff : 0;\n");
205 else
206 printf("x >>= %i;\n", c);
207 printf(" return x; }\n");
208 } else {
209 if (c == 0) {
210 printf("\treturn ");
211 if (pc)
212 printf("tmp");
213 else
214 printf("cpu->cd.arm.r[%i]",rm);
215 printf(" & 0x80000000? 0xffffffff : 0;\n");
216 } else {
217 printf("return (int32_t)");
218 if (pc)
219 printf("tmp");
220 else
221 printf("cpu->cd.arm.r[%i]",rm);
222 printf(" >> %i;\n", c);
223 }
224 }
225 break;
226
227 case 5: /* asr Rc (Arithmetic Shift Right by register) */
228 if (s) {
229 printf("{ int32_t x = ");
230 if (pc)
231 printf("tmp");
232 else
233 printf("cpu->cd.arm.r[%i]", rm);
234 printf(",y=cpu->cd.arm.r[%i]&255;\n", rc);
235 printf("if(y==0) return x;\n");
236 printf("cpu->cd.arm.flags &= ~ARM_F_C;\n");
237 printf("if(y>31) y=31;\n");
238 printf("y--; x >>= y;\n");
239 printf("if (x & 1) "
240 "cpu->cd.arm.flags |= ARM_F_C;\n");
241 printf(" return (int32_t)x >> 1; }\n");
242 } else {
243 printf("{ int32_t y=cpu->cd.arm.r[%i]&255;\n", rc);
244 printf("int32_t x=");
245 if (pc)
246 printf("tmp");
247 else
248 printf("cpu->cd.arm.r[%i]",rm);
249 printf("; ");
250 printf("if (y>=31) return (x<0)?0xffffffff:0;\n");
251 printf("return (int32_t)x >> y; } ");
252 }
253 break;
254
255 case 6: /* ror c OR rrx (Arithmetic Shift Right by constant) */
256 /* 0=rrx, 1..31=ror */
257 if (c == 0) {
258 printf("{ uint64_t x=");
259 if (pc)
260 printf("tmp");
261 else
262 printf("cpu->cd.arm.r[%i]",rm);
263 printf("; if (cpu->cd.arm.flags & ARM_F_C)"
264 " x |= 0x100000000ULL;");
265 if (s) {
266 printf("cpu->cd.arm.flags &= ~ARM_F_C;"
267 "if(x&1) cpu->cd.arm.flags |= "
268 "ARM_F_C;");
269 }
270 printf("return x >> 1; }\n");
271 } else if (s) {
272 printf("{ uint64_t x = ");
273 if (pc)
274 printf("tmp");
275 else
276 printf("cpu->cd.arm.r[%i]", rm);
277 printf("; x |= (x << 32);\n");
278 printf("cpu->cd.arm.flags &= ~ARM_F_C;\n");
279 printf("if (x & 0x%x)\n"
280 "\tcpu->cd.arm.flags |= ARM_F_C;\n",
281 (int)(1 << (c-1)));
282 printf(" return x >> %i; }\n", c);
283 } else {
284 printf("{ uint64_t x=");
285 if (pc)
286 printf("tmp");
287 else
288 printf("cpu->cd.arm.r[%i]",rm);
289 printf("; x |= (x << 32); ");
290 printf("return x >> %i; }\n", c);
291 }
292 break;
293
294 case 7: /* ror Rc (Rotate Right by register) */
295 if (s) {
296 printf("{ uint64_t x = ");
297 if (pc)
298 printf("tmp");
299 else
300 printf("cpu->cd.arm.r[%i]", rm);
301 printf("; int y=cpu->cd.arm.r[%i]&255;\n", rc);
302 printf("if(y==0) return x;\n");
303 printf("y --; y &= 31; x >>= y;\n");
304 printf("cpu->cd.arm.flags &= ~ARM_F_C;\n");
305 printf("if (x & 1) "
306 "cpu->cd.arm.flags |= ARM_F_C;\n");
307 printf(" return x >> 1; }\n");
308 } else {
309 printf("{ int y=cpu->cd.arm.r[%i]&31;\n", rc);
310 printf("uint64_t x=");
311 if (pc)
312 printf("tmp");
313 else
314 printf("cpu->cd.arm.r[%i]",rm);
315 printf("; x |= (x << 32); ");
316 printf("return (x >> y); } ");
317 }
318 break;
319
320 default:
321 printf("\tprintf(\"%s\\n\");\n", name);
322 printf("\texit(1); /* TODO */\n\treturn 0;\n");
323 }
324
325 printf("}\n");
326 }
327
328
329 int main(int argc, char *argv[])
330 {
331 int s, func, f_start, f_end;
332
333 if (argc < 3) {
334 fprintf(stderr, "usage: %s start end\n", argv[0]);
335 exit(1);
336 }
337
338 f_start = strtol(argv[1], NULL, 0);
339 f_end = strtol(argv[2], NULL, 0);
340
341 printf("/*\n * DO NOT EDIT! AUTOMATICALLY GENERATED!\n */\n\n");
342 printf("#include <stdio.h>\n");
343 printf("#include <stdlib.h>\n");
344 printf("#include \"cpu.h\"\n");
345 printf("#include \"misc.h\"\n");
346 printf("\n\n");
347
348 if (f_start != 0 || f_end != 0) {
349 for (s=0; s<=1; s++)
350 for (func=f_start; func<=f_end; func++)
351 f(s, func, 0);
352 } else {
353 for (s=0; s<=1; s++)
354 for (func=0; func<=0xfff; func++) {
355 printf("extern uint32_t ");
356 f(s, func, 1);
357 printf("(struct cpu *, struct arm_"
358 "instr_call *);\n");
359 }
360
361 printf("\nuint32_t (*arm_r[8192])(struct cpu *,"
362 " struct arm_instr_call *) = {\n");
363 for (s=0; s<=1; s++)
364 for (func=0; func<=0xfff; func++) {
365 printf("\t");
366 f(s, func, 1);
367 if (s!=1 || func!=0xfff)
368 printf(",");
369 printf("\n");
370 }
371 printf("};\n\n");
372 }
373
374 return 0;
375 }
376

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