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: cpu_alpha_palcode.c,v 1.5 2006/01/14 13:15:32 debug Exp $ |
29 |
* |
30 |
* Alpha PALcode-related functionality. |
31 |
*/ |
32 |
|
33 |
|
34 |
#include <stdio.h> |
35 |
#include <stdlib.h> |
36 |
#include <string.h> |
37 |
#include <ctype.h> |
38 |
|
39 |
#include "misc.h" |
40 |
|
41 |
|
42 |
#ifndef ENABLE_ALPHA |
43 |
|
44 |
|
45 |
#include "cpu_alpha.h" |
46 |
|
47 |
|
48 |
void alpha_palcode_name(uint32_t palcode, char *buf, size_t buflen) |
49 |
{ buf[0]='\0'; } |
50 |
void alpha_palcode(struct cpu *cpu, uint32_t palcode) { } |
51 |
|
52 |
|
53 |
#else /* ENABLE_ALPHA */ |
54 |
|
55 |
|
56 |
#include "console.h" |
57 |
#include "cpu.h" |
58 |
#include "machine.h" |
59 |
#include "memory.h" |
60 |
#include "symbol.h" |
61 |
|
62 |
|
63 |
/* |
64 |
* alpha_palcode_name(): |
65 |
* |
66 |
* Return the name of a PALcode number, as a string. |
67 |
*/ |
68 |
void alpha_palcode_name(uint32_t palcode, char *buf, size_t buflen) |
69 |
{ |
70 |
switch (palcode) { |
71 |
case 0x10: snprintf(buf, buflen, "PAL_OSF1_rdmces"); break; |
72 |
case 0x11: snprintf(buf, buflen, "PAL_OSF1_wrmces"); break; |
73 |
case 0x2b: snprintf(buf, buflen, "PAL_OSF1_wrfen"); break; |
74 |
case 0x2d: snprintf(buf, buflen, "PAL_OSF1_wrvptptr"); break; |
75 |
case 0x30: snprintf(buf, buflen, "PAL_OSF1_swpctx"); break; |
76 |
case 0x31: snprintf(buf, buflen, "PAL_OSF1_wrval"); break; |
77 |
case 0x32: snprintf(buf, buflen, "PAL_OSF1_rdval"); break; |
78 |
case 0x33: snprintf(buf, buflen, "PAL_OSF1_tbi"); break; |
79 |
case 0x34: snprintf(buf, buflen, "PAL_OSF1_wrent"); break; |
80 |
case 0x35: snprintf(buf, buflen, "PAL_OSF1_swpipl"); break; |
81 |
case 0x36: snprintf(buf, buflen, "PAL_OSF1_rdps"); break; |
82 |
case 0x37: snprintf(buf, buflen, "PAL_OSF1_wrkgp"); break; |
83 |
case 0x38: snprintf(buf, buflen, "PAL_OSF1_wrusp"); break; |
84 |
case 0x39: snprintf(buf, buflen, "PAL_OSF1_wrperfmon"); break; |
85 |
case 0x3a: snprintf(buf, buflen, "PAL_OSF1_rdusp"); break; |
86 |
case 0x3c: snprintf(buf, buflen, "PAL_OSF1_whami"); break; |
87 |
case 0x3d: snprintf(buf, buflen, "PAL_OSF1_retsys"); break; |
88 |
case 0x3f: snprintf(buf, buflen, "PAL_OSF1_rti"); break; |
89 |
case 0x81: snprintf(buf, buflen, "PAL_bugchk"); break; |
90 |
case 0x83: snprintf(buf, buflen, "PAL_OSF1_callsys"); break; |
91 |
case 0x86: snprintf(buf, buflen, "PAL_OSF1_imb"); break; |
92 |
case 0x92: snprintf(buf, buflen, "PAL_OSF1_urti"); break; |
93 |
case 0x3fffffe: snprintf(buf, buflen, "GXemul_PROM"); break; |
94 |
default:snprintf(buf, buflen, "UNKNOWN 0x%x", palcode); |
95 |
} |
96 |
} |
97 |
|
98 |
|
99 |
/* |
100 |
* alpha_prom_call(): |
101 |
*/ |
102 |
void alpha_prom_call(struct cpu *cpu) |
103 |
{ |
104 |
uint64_t addr; |
105 |
|
106 |
switch (cpu->cd.alpha.r[ALPHA_A0]) { |
107 |
case 0x02: |
108 |
/* puts: a1 = channel, a2 = ptr to buf, a3 = len */ |
109 |
for (addr = cpu->cd.alpha.r[ALPHA_A2]; |
110 |
addr < cpu->cd.alpha.r[ALPHA_A2] + |
111 |
cpu->cd.alpha.r[ALPHA_A3]; addr ++) { |
112 |
unsigned char ch; |
113 |
cpu->memory_rw(cpu, cpu->mem, addr, &ch, sizeof(ch), |
114 |
MEM_READ, CACHE_DATA | NO_EXCEPTIONS); |
115 |
console_putchar(cpu->machine->main_console_handle, ch); |
116 |
} |
117 |
cpu->cd.alpha.r[ALPHA_V0] = cpu->cd.alpha.r[ALPHA_A3]; |
118 |
break; |
119 |
case 0x22: |
120 |
/* getenv */ |
121 |
fatal("[ Alpha PALcode: GXemul PROM call 0x22: TODO ]\n"); |
122 |
break; |
123 |
default:fatal("[ Alpha PALcode: GXemul PROM call, a0=0x%llx ]\n", |
124 |
(long long)cpu->cd.alpha.r[ALPHA_A0]); |
125 |
cpu->running = 0; |
126 |
} |
127 |
|
128 |
/* Return from the PROM call. */ |
129 |
cpu->pc = cpu->cd.alpha.r[ALPHA_RA]; |
130 |
} |
131 |
|
132 |
|
133 |
/* |
134 |
* alpha_palcode(): |
135 |
* |
136 |
* Execute an Alpha PALcode instruction. (Most of these correspond to |
137 |
* OSF1 palcodes, used by for example NetBSD/alpha.) |
138 |
*/ |
139 |
void alpha_palcode(struct cpu *cpu, uint32_t palcode) |
140 |
{ |
141 |
switch (palcode) { |
142 |
case 0x10: /* PAL_OSF1_rdmces */ |
143 |
/* TODO? Return something in v0. */ |
144 |
break; |
145 |
case 0x11: /* PAL_OSF1_wrmces */ |
146 |
/* TODO? Set something to a0. */ |
147 |
break; |
148 |
case 0x2b: /* PAL_OSF1_wrfen */ |
149 |
/* Floating point enable: a0 = 1 or 0. */ |
150 |
/* TODO */ |
151 |
break; |
152 |
case 0x31: /* PAL_OSF1_wrval */ |
153 |
/* a0 = value */ |
154 |
cpu->cd.alpha.sysvalue = cpu->cd.alpha.r[ALPHA_A0]; |
155 |
break; |
156 |
case 0x32: /* PAL_OSF1_rdval */ |
157 |
/* return: v0 = value */ |
158 |
cpu->cd.alpha.r[ALPHA_V0] = cpu->cd.alpha.sysvalue; |
159 |
break; |
160 |
case 0x33: /* PAL_OSF1_tbi */ |
161 |
/* a0 = op, a1 = vaddr */ |
162 |
debug("[ Alpha PALcode: PAL_OSF1_tbi: a0=%lli a1=0x%llx ]\n", |
163 |
(signed long long)cpu->cd.alpha.r[ALPHA_A0], |
164 |
(long long)cpu->cd.alpha.r[ALPHA_A1]); |
165 |
/* TODO */ |
166 |
break; |
167 |
case 0x34: /* PAL_OSF1_wrent (Write System Entry Address) */ |
168 |
/* a0 = new vector, a1 = vector selector */ |
169 |
debug("[ Alpha PALcode: PAL_OSF1_tbi: a0=%lli a1=0x%llx ]\n", |
170 |
(signed long long)cpu->cd.alpha.r[ALPHA_A0], |
171 |
(long long)cpu->cd.alpha.r[ALPHA_A1]); |
172 |
/* TODO */ |
173 |
break; |
174 |
case 0x35: /* PAL_OSF1_swpipl */ |
175 |
/* a0 = new ipl, v0 = return old ipl */ |
176 |
cpu->cd.alpha.r[ALPHA_V0] = cpu->cd.alpha.ipl; |
177 |
cpu->cd.alpha.ipl = cpu->cd.alpha.r[ALPHA_A0]; |
178 |
break; |
179 |
case 0x36: /* PAL_OSF1_rdps */ |
180 |
/* TODO */ |
181 |
cpu->cd.alpha.r[ALPHA_V0] = 0; |
182 |
break; |
183 |
case 0x37: /* PAL_OSF1_wrkgp */ |
184 |
/* "clobbers a0, t0, t8-t11" according to comments in |
185 |
NetBSD sources */ |
186 |
|
187 |
/* KGP shoudl be set to a0. (TODO) */ |
188 |
break; |
189 |
case 0x3c: /* PAL_OSF1_whami */ |
190 |
/* Returns CPU id in v0: */ |
191 |
cpu->cd.alpha.r[ALPHA_V0] = cpu->cpu_id; |
192 |
break; |
193 |
case 0x81: /* PAL_bugchk */ |
194 |
cpu->running = 0; |
195 |
break; |
196 |
case 0x83: /* PAL_OSF1_syscall */ |
197 |
if (cpu->machine->userland_emul != NULL) |
198 |
useremul_syscall(cpu, 0); |
199 |
else { |
200 |
fatal("[ Alpha PALcode: syscall, but no" |
201 |
" syscall handler? ]\n"); |
202 |
cpu->running = 0; |
203 |
} |
204 |
break; |
205 |
case 0x86: /* PAL_OSF1_imb */ |
206 |
/* TODO */ |
207 |
break; |
208 |
case 0x3fffffe: |
209 |
alpha_prom_call(cpu); |
210 |
break; |
211 |
default:fatal("[ Alpha PALcode 0x%x unimplemented! ]\n", palcode); |
212 |
cpu->running = 0; |
213 |
} |
214 |
} |
215 |
|
216 |
|
217 |
#endif /* ENABLE_ALPHA */ |