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c906108c SS |
1 | /* This file is part of the program psim. |
2 | ||
3 | Copyright (C) 1994-1997, Andrew Cagney <cagney@highland.com.au> | |
4 | ||
5 | This program is free software; you can redistribute it and/or modify | |
6 | it under the terms of the GNU General Public License as published by | |
7 | the Free Software Foundation; either version 2 of the License, or | |
8 | (at your option) any later version. | |
9 | ||
10 | This program is distributed in the hope that it will be useful, | |
11 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
12 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
13 | GNU General Public License for more details. | |
14 | ||
15 | You should have received a copy of the GNU General Public License | |
16 | along with this program; if not, write to the Free Software | |
17 | Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. | |
18 | ||
19 | */ | |
20 | ||
21 | ||
22 | #ifndef _EMUL_GENERIC_C_ | |
23 | #define _EMUL_GENERIC_C_ | |
24 | ||
25 | #include "emul_generic.h" | |
26 | ||
27 | #ifndef STATIC_INLINE_EMUL_GENERIC | |
28 | #define STATIC_INLINE_EMUL_GENERIC STATIC_INLINE | |
29 | #endif | |
30 | ||
31 | ||
32 | STATIC_INLINE_EMUL_GENERIC void | |
33 | emul_syscall_enter(emul_syscall *emul, | |
34 | int call, | |
35 | int arg0, | |
36 | cpu *processor, | |
37 | unsigned_word cia) | |
38 | { | |
39 | printf_filtered("%d:0x%lx:%s(", | |
40 | cpu_nr(processor) + 1, | |
41 | (long)cia, | |
42 | emul->syscall_descriptor[call].name); | |
43 | } | |
44 | ||
45 | ||
46 | STATIC_INLINE_EMUL_GENERIC void | |
47 | emul_syscall_exit(emul_syscall *emul, | |
48 | int call, | |
49 | int arg0, | |
50 | cpu *processor, | |
51 | unsigned_word cia) | |
52 | { | |
53 | int status = cpu_registers(processor)->gpr[3]; | |
54 | int error = cpu_registers(processor)->gpr[0]; | |
55 | printf_filtered(")=%d", status); | |
56 | if (error > 0 && error < emul->nr_error_names) | |
57 | printf_filtered("[%s]", emul->error_names[error]); | |
58 | printf_filtered("\n"); | |
59 | } | |
60 | ||
61 | ||
62 | INLINE_EMUL_GENERIC unsigned64 | |
63 | emul_read_gpr64(cpu *processor, | |
64 | int g) | |
65 | { | |
66 | unsigned32 hi; | |
67 | unsigned32 lo; | |
68 | if (CURRENT_TARGET_BYTE_ORDER == BIG_ENDIAN) { | |
69 | hi = cpu_registers(processor)->gpr[g]; | |
70 | lo = cpu_registers(processor)->gpr[g+1]; | |
71 | } | |
72 | else { | |
73 | lo = cpu_registers(processor)->gpr[g]; | |
74 | hi = cpu_registers(processor)->gpr[g+1]; | |
75 | } | |
76 | return (INSERTED64(hi, 0, 31) | INSERTED64(lo, 32, 63)); | |
77 | } | |
78 | ||
79 | ||
80 | INLINE_EMUL_GENERIC void | |
81 | emul_write_gpr64(cpu *processor, | |
82 | int g, | |
83 | unsigned64 val) | |
84 | { | |
85 | unsigned32 hi = EXTRACTED64(val, 0, 31); | |
86 | unsigned32 lo = EXTRACTED64(val, 32, 63); | |
87 | if (CURRENT_TARGET_BYTE_ORDER == BIG_ENDIAN) { | |
88 | cpu_registers(processor)->gpr[g] = hi; | |
89 | cpu_registers(processor)->gpr[g+1] = lo; | |
90 | } | |
91 | else { | |
92 | cpu_registers(processor)->gpr[g] = lo; | |
93 | cpu_registers(processor)->gpr[g+1] = hi; | |
94 | } | |
95 | } | |
96 | ||
97 | ||
98 | INLINE_EMUL_GENERIC char * | |
99 | emul_read_string(char *dest, | |
100 | unsigned_word addr, | |
101 | unsigned nr_bytes, | |
102 | cpu *processor, | |
103 | unsigned_word cia) | |
104 | { | |
105 | unsigned nr_moved = 0; | |
106 | if (addr == 0) | |
107 | return NULL; | |
108 | while (1) { | |
109 | dest[nr_moved] = vm_data_map_read_1(cpu_data_map(processor), | |
110 | addr + nr_moved, | |
111 | processor, cia); | |
112 | if (dest[nr_moved] == '\0' || nr_moved >= nr_bytes) | |
113 | break; | |
114 | nr_moved++; | |
115 | } | |
116 | dest[nr_moved] = '\0'; | |
117 | return dest; | |
118 | } | |
119 | ||
120 | ||
121 | INLINE_EMUL_GENERIC void | |
122 | emul_write_status(cpu *processor, | |
123 | int status, | |
124 | int errno) | |
125 | { | |
126 | if (status == -1 && errno != 0) { | |
127 | cpu_registers(processor)->gpr[3] = errno; | |
128 | CR_SET(0, cr_i_summary_overflow); | |
129 | } | |
130 | else { | |
131 | cpu_registers(processor)->gpr[3] = status; | |
132 | CR_SET(0, 0); | |
133 | } | |
134 | } | |
135 | ||
136 | ||
137 | INLINE_EMUL_GENERIC void | |
138 | emul_write2_status(cpu *processor, | |
139 | int status1, | |
140 | int status2, | |
141 | int errno) | |
142 | { | |
143 | if (status1 == -1 && errno != 0) { | |
144 | cpu_registers(processor)->gpr[3] = errno; | |
145 | CR_SET(0, cr_i_summary_overflow); | |
146 | } | |
147 | else { | |
148 | cpu_registers(processor)->gpr[3] = status1; | |
149 | cpu_registers(processor)->gpr[4] = status2; | |
150 | CR_SET(0, 0); | |
151 | } | |
152 | } | |
153 | ||
154 | ||
155 | INLINE_EMUL_GENERIC unsigned_word | |
156 | emul_read_word(unsigned_word addr, | |
157 | cpu *processor, | |
158 | unsigned_word cia) | |
159 | { | |
160 | return vm_data_map_read_word(cpu_data_map(processor), | |
161 | addr, | |
162 | processor, cia); | |
163 | } | |
164 | ||
165 | ||
166 | INLINE_EMUL_GENERIC void | |
167 | emul_write_word(unsigned_word addr, | |
168 | unsigned_word buf, | |
169 | cpu *processor, | |
170 | unsigned_word cia) | |
171 | { | |
172 | vm_data_map_write_word(cpu_data_map(processor), | |
173 | addr, | |
174 | buf, | |
175 | processor, cia); | |
176 | } | |
177 | ||
178 | ||
179 | INLINE_EMUL_GENERIC void | |
180 | emul_write_buffer(const void *source, | |
181 | unsigned_word addr, | |
182 | unsigned nr_bytes, | |
183 | cpu *processor, | |
184 | unsigned_word cia) | |
185 | { | |
186 | int nr_moved; | |
187 | for (nr_moved = 0; nr_moved < nr_bytes; nr_moved++) { | |
188 | vm_data_map_write_1(cpu_data_map(processor), | |
189 | addr + nr_moved, | |
190 | ((const char*)source)[nr_moved], | |
191 | processor, cia); | |
192 | } | |
193 | } | |
194 | ||
195 | ||
196 | INLINE_EMUL_GENERIC void | |
197 | emul_read_buffer(void *dest, | |
198 | unsigned_word addr, | |
199 | unsigned nr_bytes, | |
200 | cpu *processor, | |
201 | unsigned_word cia) | |
202 | { | |
203 | int nr_moved; | |
204 | for (nr_moved = 0; nr_moved < nr_bytes; nr_moved++) { | |
205 | ((char*)dest)[nr_moved] = vm_data_map_read_1(cpu_data_map(processor), | |
206 | addr + nr_moved, | |
207 | processor, cia); | |
208 | } | |
209 | } | |
210 | ||
211 | ||
212 | INLINE_EMUL_GENERIC void | |
213 | emul_do_system_call(os_emul_data *emul_data, | |
214 | emul_syscall *emul, | |
215 | unsigned call, | |
216 | const int arg0, | |
217 | cpu *processor, | |
218 | unsigned_word cia) | |
219 | { | |
220 | emul_syscall_handler *handler = NULL; | |
221 | if (call >= emul->nr_system_calls) | |
222 | error("do_call() os_emul call %d out-of-range\n", call); | |
223 | ||
224 | handler = emul->syscall_descriptor[call].handler; | |
225 | if (handler == NULL) { | |
226 | if (emul->syscall_descriptor[call].name) { | |
227 | error("do_call() unimplemented call %s\n", emul->syscall_descriptor[call].name); | |
228 | } else { | |
229 | error("do_call() unimplemented call %d\n", call); | |
230 | } | |
231 | } | |
232 | ||
233 | if (WITH_TRACE && ppc_trace[trace_os_emul]) | |
234 | emul_syscall_enter(emul, call, arg0, processor, cia); | |
235 | ||
236 | cpu_registers(processor)->gpr[0] = 0; /* default success */ | |
237 | handler(emul_data, call, arg0, processor, cia); | |
238 | ||
239 | if (WITH_TRACE && ppc_trace[trace_os_emul]) | |
240 | emul_syscall_exit(emul, call, arg0, processor, cia); | |
241 | } | |
242 | ||
243 | ||
244 | /* default size for the first bank of memory */ | |
245 | ||
246 | #ifndef OEA_MEMORY_SIZE | |
247 | #define OEA_MEMORY_SIZE 0x100000 | |
248 | #endif | |
249 | ||
250 | ||
251 | /* Add options to the device tree */ | |
252 | ||
253 | INLINE_EMUL_GENERIC void | |
254 | emul_add_tree_options(device *tree, | |
255 | bfd *image, | |
256 | const char *emul, | |
257 | const char *env, | |
258 | int oea_interrupt_prefix) | |
259 | { | |
260 | int little_endian = 0; | |
261 | ||
262 | /* sort out little endian */ | |
263 | if (tree_find_property(tree, "/options/little-endian?")) | |
264 | little_endian = tree_find_boolean_property(tree, "/options/little-endian?"); | |
265 | else { | |
266 | #ifdef bfd_little_endian /* new bfd */ | |
267 | little_endian = (image != NULL && bfd_little_endian(image)); | |
268 | #else | |
269 | little_endian = (image != NULL && | |
270 | !image->xvec->byteorder_big_p); | |
271 | #endif | |
272 | tree_parse(tree, "/options/little-endian? %s", | |
273 | little_endian ? "true" : "false"); | |
274 | } | |
275 | ||
276 | /* misc other stuff */ | |
277 | tree_parse(tree, "/openprom/options/oea-memory-size 0x%x", | |
278 | OEA_MEMORY_SIZE); | |
279 | tree_parse(tree, "/openprom/options/oea-interrupt-prefix %d", | |
280 | oea_interrupt_prefix); | |
281 | tree_parse(tree, "/openprom/options/smp 1"); | |
282 | tree_parse(tree, "/openprom/options/env %s", env); | |
283 | tree_parse(tree, "/openprom/options/os-emul %s", emul); | |
284 | tree_parse(tree, "/openprom/options/strict-alignment? %s", | |
285 | (WITH_ALIGNMENT == STRICT_ALIGNMENT) | |
286 | ? "true" : "false"); | |
287 | tree_parse(tree, "/openprom/options/floating-point? %s", | |
288 | WITH_FLOATING_POINT ? "true" : "false"); | |
289 | tree_parse(tree, "/openprom/options/use-stdio? %s", | |
290 | ((WITH_STDIO == DO_USE_STDIO | |
291 | || WITH_STDIO == 0) | |
292 | ? "true" : "false")); | |
293 | tree_parse(tree, "/openprom/options/model \"%s", | |
294 | model_name[WITH_DEFAULT_MODEL]); | |
295 | tree_parse(tree, "/openprom/options/model-issue %d", | |
296 | MODEL_ISSUE_IGNORE); | |
297 | ||
298 | /* useful options */ | |
299 | } | |
300 | ||
301 | INLINE_EMUL_GENERIC void | |
302 | emul_add_tree_hardware(device *root) | |
303 | { | |
304 | int i; | |
305 | int nr_cpus = tree_find_integer_property(root, "/openprom/options/smp"); | |
306 | ||
307 | /* sanity check the number of processors */ | |
308 | if (nr_cpus > MAX_NR_PROCESSORS) | |
309 | error("Specified number of processors (%d) exceeds the number configured (%d).\n", | |
310 | nr_cpus, MAX_NR_PROCESSORS); | |
311 | ||
312 | /* set the number of address cells (1 or 2) */ | |
313 | tree_parse(root, "#address-cells %d", WITH_TARGET_WORD_BITSIZE / 32); | |
314 | ||
315 | /* add some memory */ | |
316 | if (tree_find_device(root, "/memory") == NULL) { | |
317 | unsigned_word memory_size = | |
318 | tree_find_integer_property(root, "/openprom/options/oea-memory-size"); | |
319 | const unsigned_word avail_start = 0x3000; | |
320 | tree_parse(root, "/memory@0/reg 0x0 0x%lx", | |
321 | (unsigned long)memory_size); | |
322 | /* reserve the first 0x3000 for the PowerPC interrupt table */ | |
323 | tree_parse(root, "/memory@0/available 0x%lx 0x%lx", | |
324 | (unsigned long)avail_start, | |
325 | (unsigned long)memory_size - avail_start); | |
326 | } | |
327 | ||
328 | /* our processors */ | |
329 | for (i = 0; i < nr_cpus; i++) { | |
330 | tree_parse(root, "/cpus/cpu@%d/cpu-nr %d", i, i); | |
331 | } | |
332 | ||
333 | /* the debugging pal - hide it in the openprom and don't attach it | |
334 | to any bus */ | |
335 | tree_parse(root, "/openprom/pal"); | |
336 | ||
337 | /* chosen etc */ | |
338 | tree_parse(root, "/chosen/stdin */openprom/pal"); | |
339 | tree_parse(root, "/chosen/stdout !/chosen/stdin"); | |
340 | tree_parse(root, "/chosen/memory */memory"); | |
341 | } | |
342 | ||
343 | #endif /* _EMUL_GENERIC_C_ */ |