/[gxemul]/trunk/src/cpus/cpu_ia64.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/cpu_ia64.c

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Revision 18 - (show annotations)
Mon Oct 8 16:19:11 2007 UTC (16 years, 6 months ago) by dpavlin
File MIME type: text/plain
File size: 6210 byte(s)
++ trunk/HISTORY	(local)
$Id: HISTORY,v 1.1004 2005/10/27 14:01:10 debug Exp $
20051011        Passing -A as the default boot arg for CATS (works fine with
                OpenBSD/cats).
20051012	Fixing the VGA cursor offset bug, and speeding up framebuffer
		redraws if character cells contain the same thing as during
		the last redraw.
20051013	Adding a slow strd ARM instruction hack.
20051017	Minor updates: Adding a dummy i80321 Verde controller (for
		XScale emulation), fixing the disassembly of the ARM "ldrd"
		instruction, adding "support" for less-than-4KB pages for ARM
		(by not adding them to translation tables).
20051020	Continuing on some HPCarm stuff. A NetBSD/hpcarm kernel prints
		some boot messages on an emulated Jornada 720.
		Making dev_ram work better with dyntrans (speeds up some things
		quite a bit).
20051021	Automatically generating some of the most common ARM load/store
		multiple instructions.
20051022	Better statistics gathering for the ARM load/store multiple.
		Various other dyntrans and device updates.
20051023	Various minor updates.
20051024	Continuing; minor device and dyntrans fine-tuning. Adding the
		first "reasonable" instruction combination hacks for ARM (the
		cores of NetBSD/cats' memset and memcpy).
20051025	Fixing a dyntrans-related bug in dev_vga. Also changing the
		dyntrans low/high access notification to only be updated on
		writes, not reads. Hopefully it will be enough. (dev_vga in
		charcell mode now seems to work correctly with both reads and
		writes.)
		Experimenting with gathering dyntrans statistics (which parts
		of emulated RAM that are actually executed), and adding
		instruction combination hacks for cache cleaning and a part of
		NetBSD's scanc() function.
20051026	Adding a bitmap for ARM emulation which indicates if a page is
		(specifically) user accessible; loads and stores with the t-
		flag set can now use the translation arrays, which results in
		a measurable speedup.
20051027	Dyntrans updates; adding an extra bitmap array for 32-bit
		emulation modes, speeding up the check whether a physical page
		has any code translations or not (O(n) -> O(1)). Doing a
		similar reduction of O(n) to O(1) by avoiding the scan through
		the translation entries on a translation update (32-bit mode
		only).
		Various other minor hacks.
20051029	Quick release, without any testing at all.

==============  RELEASE 0.3.6.2  ==============


1 /*
2 * Copyright (C) 2005 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: cpu_ia64.c,v 1.2 2005/10/22 17:24:20 debug Exp $
29 *
30 * IA64 CPU emulation.
31 *
32 * TODO: Everything.
33 */
34
35 #include <stdio.h>
36 #include <stdlib.h>
37 #include <string.h>
38 #include <ctype.h>
39
40 #include "cpu.h"
41 #include "machine.h"
42 #include "memory.h"
43 #include "misc.h"
44 #include "symbol.h"
45
46 #include "tmp_ia64_head.c"
47
48
49 /*
50 * ia64_cpu_new():
51 *
52 * Create a new IA64 CPU object by filling the CPU struct.
53 * Return 1 on success, 0 if cpu_type_name isn't a valid IA64 processor.
54 */
55 int ia64_cpu_new(struct cpu *cpu, struct memory *mem,
56 struct machine *machine, int cpu_id, char *cpu_type_name)
57 {
58 int i;
59
60 if (strcasecmp(cpu_type_name, "IA64") != 0)
61 return 0;
62
63 cpu->memory_rw = ia64_memory_rw;
64 cpu->update_translation_table = ia64_update_translation_table;
65 cpu->invalidate_translation_caches =
66 ia64_invalidate_translation_caches;
67 cpu->invalidate_code_translation = ia64_invalidate_code_translation;
68 cpu->is_32bit = 0;
69
70 /* Only show name and caches etc for CPU nr 0: */
71 if (cpu_id == 0) {
72 debug("%s", cpu->name);
73 }
74
75 /* Create the default virtual->physical->host translation: */
76 cpu->cd.ia64.vph_default_page = malloc(sizeof(struct ia64_vph_page));
77 if (cpu->cd.ia64.vph_default_page == NULL) {
78 fprintf(stderr, "out of memory in ia64_cpu_new()\n");
79 exit(1);
80 }
81 memset(cpu->cd.ia64.vph_default_page, 0, sizeof(struct ia64_vph_page));
82 for (i=0; i<IA64_LEVEL0; i++)
83 cpu->cd.ia64.vph_table0[i] = cpu->cd.ia64.vph_table0_kernel[i]
84 = cpu->cd.ia64.vph_default_page;
85
86 return 1;
87 }
88
89
90 /*
91 * ia64_cpu_dumpinfo():
92 */
93 void ia64_cpu_dumpinfo(struct cpu *cpu)
94 {
95 /* TODO */
96 debug("\n");
97 }
98
99
100 /*
101 * ia64_cpu_list_available_types():
102 *
103 * Print a list of available IA64 CPU types.
104 */
105 void ia64_cpu_list_available_types(void)
106 {
107 /* TODO */
108
109 debug("IA64\n");
110 }
111
112
113 /*
114 * ia64_cpu_register_match():
115 */
116 void ia64_cpu_register_match(struct machine *m, char *name,
117 int writeflag, uint64_t *valuep, int *match_register)
118 {
119 int cpunr = 0;
120
121 /* CPU number: */
122
123 /* TODO */
124
125 if (strcasecmp(name, "pc") == 0) {
126 if (writeflag) {
127 m->cpus[cpunr]->pc = *valuep;
128 } else
129 *valuep = m->cpus[cpunr]->pc;
130 *match_register = 1;
131 }
132
133 /* TODO */
134 }
135
136
137 /*
138 * ia64_cpu_register_dump():
139 *
140 * Dump cpu registers in a relatively readable format.
141 *
142 * gprs: set to non-zero to dump GPRs and some special-purpose registers.
143 * coprocs: set bit 0..3 to dump registers in coproc 0..3.
144 */
145 void ia64_cpu_register_dump(struct cpu *cpu, int gprs, int coprocs)
146 {
147 char *symbol;
148 uint64_t offset;
149 int x = cpu->cpu_id;
150
151 if (gprs) {
152 symbol = get_symbol_name(&cpu->machine->symbol_context,
153 cpu->pc, &offset);
154 debug("cpu%i:\t pc = 0x%016llx", x, (long long)cpu->pc);
155 debug(" <%s>\n", symbol != NULL? symbol : " no symbol ");
156
157 /* TODO */
158 }
159 }
160
161
162 /*
163 * ia64_cpu_show_full_statistics():
164 *
165 * Show detailed statistics on opcode usage on each cpu.
166 */
167 void ia64_cpu_show_full_statistics(struct machine *m)
168 {
169 fatal("ia64_cpu_show_full_statistics(): TODO\n");
170 }
171
172
173 /*
174 * ia64_cpu_tlbdump():
175 *
176 * Called from the debugger to dump the TLB in a readable format.
177 * x is the cpu number to dump, or -1 to dump all CPUs.
178 *
179 * If rawflag is nonzero, then the TLB contents isn't formated nicely,
180 * just dumped.
181 */
182 void ia64_cpu_tlbdump(struct machine *m, int x, int rawflag)
183 {
184 fatal("ia64_cpu_tlbdump(): TODO\n");
185 }
186
187
188 /*
189 * ia64_cpu_interrupt():
190 */
191 int ia64_cpu_interrupt(struct cpu *cpu, uint64_t irq_nr)
192 {
193 fatal("ia64_cpu_interrupt(): TODO\n");
194 return 0;
195 }
196
197
198 /*
199 * ia64_cpu_interrupt_ack():
200 */
201 int ia64_cpu_interrupt_ack(struct cpu *cpu, uint64_t irq_nr)
202 {
203 /* fatal("ia64_cpu_interrupt_ack(): TODO\n"); */
204 return 0;
205 }
206
207
208 /*
209 * ia64_cpu_disassemble_instr():
210 *
211 * Convert an instruction word into human readable format, for instruction
212 * tracing.
213 *
214 * If running is 1, cpu->pc should be the address of the instruction.
215 *
216 * If running is 0, things that depend on the runtime environment (eg.
217 * register contents) will not be shown, and addr will be used instead of
218 * cpu->pc for relative addresses.
219 */
220 int ia64_cpu_disassemble_instr(struct cpu *cpu, unsigned char *ib,
221 int running, uint64_t dumpaddr, int bintrans)
222 {
223 uint64_t offset;
224 char *symbol;
225
226 if (running)
227 dumpaddr = cpu->pc;
228
229 symbol = get_symbol_name(&cpu->machine->symbol_context,
230 dumpaddr, &offset);
231 if (symbol != NULL && offset == 0)
232 debug("<%s>\n", symbol);
233
234 if (cpu->machine->ncpus > 1 && running)
235 debug("cpu%i:\t", cpu->cpu_id);
236
237 debug("%016llx: ", (long long)dumpaddr);
238
239 debug("TODO\n");
240
241 /* iw = ib[0] + (ib[1]<<8) + (ib[2]<<16) + (ib[3]<<24); */
242
243 return 16;
244 }
245
246
247 #include "tmp_ia64_tail.c"
248

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