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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 | |
3fd725ef | 7 | the Free Software Foundation; either version 3 of the License, or |
c906108c SS |
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 | |
51b318de | 16 | along with this program; if not, see <http://www.gnu.org/licenses/>. |
c906108c SS |
17 | |
18 | */ | |
19 | ||
20 | ||
21 | #ifndef _EMUL_GENERIC_C_ | |
22 | #define _EMUL_GENERIC_C_ | |
23 | ||
24 | #include "emul_generic.h" | |
25 | ||
26 | #ifndef STATIC_INLINE_EMUL_GENERIC | |
27 | #define STATIC_INLINE_EMUL_GENERIC STATIC_INLINE | |
28 | #endif | |
29 | ||
30 | ||
31 | STATIC_INLINE_EMUL_GENERIC void | |
32 | emul_syscall_enter(emul_syscall *emul, | |
33 | int call, | |
34 | int arg0, | |
35 | cpu *processor, | |
36 | unsigned_word cia) | |
37 | { | |
38 | printf_filtered("%d:0x%lx:%s(", | |
39 | cpu_nr(processor) + 1, | |
40 | (long)cia, | |
41 | emul->syscall_descriptor[call].name); | |
42 | } | |
43 | ||
44 | ||
45 | STATIC_INLINE_EMUL_GENERIC void | |
46 | emul_syscall_exit(emul_syscall *emul, | |
47 | int call, | |
48 | int arg0, | |
49 | cpu *processor, | |
50 | unsigned_word cia) | |
51 | { | |
52 | int status = cpu_registers(processor)->gpr[3]; | |
53 | int error = cpu_registers(processor)->gpr[0]; | |
54 | printf_filtered(")=%d", status); | |
55 | if (error > 0 && error < emul->nr_error_names) | |
56 | printf_filtered("[%s]", emul->error_names[error]); | |
57 | printf_filtered("\n"); | |
58 | } | |
59 | ||
60 | ||
61 | INLINE_EMUL_GENERIC unsigned64 | |
62 | emul_read_gpr64(cpu *processor, | |
63 | int g) | |
64 | { | |
65 | unsigned32 hi; | |
66 | unsigned32 lo; | |
67 | if (CURRENT_TARGET_BYTE_ORDER == BIG_ENDIAN) { | |
68 | hi = cpu_registers(processor)->gpr[g]; | |
69 | lo = cpu_registers(processor)->gpr[g+1]; | |
70 | } | |
71 | else { | |
72 | lo = cpu_registers(processor)->gpr[g]; | |
73 | hi = cpu_registers(processor)->gpr[g+1]; | |
74 | } | |
75 | return (INSERTED64(hi, 0, 31) | INSERTED64(lo, 32, 63)); | |
76 | } | |
77 | ||
78 | ||
79 | INLINE_EMUL_GENERIC void | |
80 | emul_write_gpr64(cpu *processor, | |
81 | int g, | |
82 | unsigned64 val) | |
83 | { | |
84 | unsigned32 hi = EXTRACTED64(val, 0, 31); | |
85 | unsigned32 lo = EXTRACTED64(val, 32, 63); | |
86 | if (CURRENT_TARGET_BYTE_ORDER == BIG_ENDIAN) { | |
87 | cpu_registers(processor)->gpr[g] = hi; | |
88 | cpu_registers(processor)->gpr[g+1] = lo; | |
89 | } | |
90 | else { | |
91 | cpu_registers(processor)->gpr[g] = lo; | |
92 | cpu_registers(processor)->gpr[g+1] = hi; | |
93 | } | |
94 | } | |
95 | ||
96 | ||
97 | INLINE_EMUL_GENERIC char * | |
98 | emul_read_string(char *dest, | |
99 | unsigned_word addr, | |
100 | unsigned nr_bytes, | |
101 | cpu *processor, | |
102 | unsigned_word cia) | |
103 | { | |
104 | unsigned nr_moved = 0; | |
105 | if (addr == 0) | |
106 | return NULL; | |
107 | while (1) { | |
108 | dest[nr_moved] = vm_data_map_read_1(cpu_data_map(processor), | |
109 | addr + nr_moved, | |
110 | processor, cia); | |
111 | if (dest[nr_moved] == '\0' || nr_moved >= nr_bytes) | |
112 | break; | |
113 | nr_moved++; | |
114 | } | |
115 | dest[nr_moved] = '\0'; | |
116 | return dest; | |
117 | } | |
118 | ||
119 | ||
120 | INLINE_EMUL_GENERIC void | |
121 | emul_write_status(cpu *processor, | |
122 | int status, | |
123 | int errno) | |
124 | { | |
125 | if (status == -1 && errno != 0) { | |
126 | cpu_registers(processor)->gpr[3] = errno; | |
127 | CR_SET(0, cr_i_summary_overflow); | |
128 | } | |
129 | else { | |
130 | cpu_registers(processor)->gpr[3] = status; | |
131 | CR_SET(0, 0); | |
132 | } | |
133 | } | |
134 | ||
135 | ||
136 | INLINE_EMUL_GENERIC void | |
137 | emul_write2_status(cpu *processor, | |
138 | int status1, | |
139 | int status2, | |
140 | int errno) | |
141 | { | |
142 | if (status1 == -1 && errno != 0) { | |
143 | cpu_registers(processor)->gpr[3] = errno; | |
144 | CR_SET(0, cr_i_summary_overflow); | |
145 | } | |
146 | else { | |
147 | cpu_registers(processor)->gpr[3] = status1; | |
148 | cpu_registers(processor)->gpr[4] = status2; | |
149 | CR_SET(0, 0); | |
150 | } | |
151 | } | |
152 | ||
153 | ||
154 | INLINE_EMUL_GENERIC unsigned_word | |
155 | emul_read_word(unsigned_word addr, | |
156 | cpu *processor, | |
157 | unsigned_word cia) | |
158 | { | |
159 | return vm_data_map_read_word(cpu_data_map(processor), | |
160 | addr, | |
161 | processor, cia); | |
162 | } | |
163 | ||
164 | ||
165 | INLINE_EMUL_GENERIC void | |
166 | emul_write_word(unsigned_word addr, | |
167 | unsigned_word buf, | |
168 | cpu *processor, | |
169 | unsigned_word cia) | |
170 | { | |
171 | vm_data_map_write_word(cpu_data_map(processor), | |
172 | addr, | |
173 | buf, | |
174 | processor, cia); | |
175 | } | |
176 | ||
177 | ||
178 | INLINE_EMUL_GENERIC void | |
179 | emul_write_buffer(const void *source, | |
180 | unsigned_word addr, | |
181 | unsigned nr_bytes, | |
182 | cpu *processor, | |
183 | unsigned_word cia) | |
184 | { | |
185 | int nr_moved; | |
186 | for (nr_moved = 0; nr_moved < nr_bytes; nr_moved++) { | |
187 | vm_data_map_write_1(cpu_data_map(processor), | |
188 | addr + nr_moved, | |
189 | ((const char*)source)[nr_moved], | |
190 | processor, cia); | |
191 | } | |
192 | } | |
193 | ||
194 | ||
195 | INLINE_EMUL_GENERIC void | |
196 | emul_read_buffer(void *dest, | |
197 | unsigned_word addr, | |
198 | unsigned nr_bytes, | |
199 | cpu *processor, | |
200 | unsigned_word cia) | |
201 | { | |
202 | int nr_moved; | |
203 | for (nr_moved = 0; nr_moved < nr_bytes; nr_moved++) { | |
204 | ((char*)dest)[nr_moved] = vm_data_map_read_1(cpu_data_map(processor), | |
205 | addr + nr_moved, | |
206 | processor, cia); | |
207 | } | |
208 | } | |
209 | ||
210 | ||
211 | INLINE_EMUL_GENERIC void | |
212 | emul_do_system_call(os_emul_data *emul_data, | |
213 | emul_syscall *emul, | |
214 | unsigned call, | |
215 | const int arg0, | |
216 | cpu *processor, | |
217 | unsigned_word cia) | |
218 | { | |
219 | emul_syscall_handler *handler = NULL; | |
220 | if (call >= emul->nr_system_calls) | |
221 | error("do_call() os_emul call %d out-of-range\n", call); | |
222 | ||
223 | handler = emul->syscall_descriptor[call].handler; | |
224 | if (handler == NULL) { | |
225 | if (emul->syscall_descriptor[call].name) { | |
226 | error("do_call() unimplemented call %s\n", emul->syscall_descriptor[call].name); | |
227 | } else { | |
228 | error("do_call() unimplemented call %d\n", call); | |
229 | } | |
230 | } | |
231 | ||
232 | if (WITH_TRACE && ppc_trace[trace_os_emul]) | |
233 | emul_syscall_enter(emul, call, arg0, processor, cia); | |
234 | ||
235 | cpu_registers(processor)->gpr[0] = 0; /* default success */ | |
236 | handler(emul_data, call, arg0, processor, cia); | |
237 | ||
238 | if (WITH_TRACE && ppc_trace[trace_os_emul]) | |
239 | emul_syscall_exit(emul, call, arg0, processor, cia); | |
240 | } | |
241 | ||
242 | ||
243 | /* default size for the first bank of memory */ | |
244 | ||
245 | #ifndef OEA_MEMORY_SIZE | |
246 | #define OEA_MEMORY_SIZE 0x100000 | |
247 | #endif | |
248 | ||
249 | ||
250 | /* Add options to the device tree */ | |
251 | ||
252 | INLINE_EMUL_GENERIC void | |
253 | emul_add_tree_options(device *tree, | |
254 | bfd *image, | |
255 | const char *emul, | |
256 | const char *env, | |
257 | int oea_interrupt_prefix) | |
258 | { | |
259 | int little_endian = 0; | |
260 | ||
261 | /* sort out little endian */ | |
262 | if (tree_find_property(tree, "/options/little-endian?")) | |
263 | little_endian = tree_find_boolean_property(tree, "/options/little-endian?"); | |
264 | else { | |
265 | #ifdef bfd_little_endian /* new bfd */ | |
266 | little_endian = (image != NULL && bfd_little_endian(image)); | |
267 | #else | |
268 | little_endian = (image != NULL && | |
269 | !image->xvec->byteorder_big_p); | |
270 | #endif | |
271 | tree_parse(tree, "/options/little-endian? %s", | |
272 | little_endian ? "true" : "false"); | |
273 | } | |
274 | ||
275 | /* misc other stuff */ | |
276 | tree_parse(tree, "/openprom/options/oea-memory-size 0x%x", | |
277 | OEA_MEMORY_SIZE); | |
278 | tree_parse(tree, "/openprom/options/oea-interrupt-prefix %d", | |
279 | oea_interrupt_prefix); | |
280 | tree_parse(tree, "/openprom/options/smp 1"); | |
281 | tree_parse(tree, "/openprom/options/env %s", env); | |
282 | tree_parse(tree, "/openprom/options/os-emul %s", emul); | |
283 | tree_parse(tree, "/openprom/options/strict-alignment? %s", | |
284 | (WITH_ALIGNMENT == STRICT_ALIGNMENT) | |
285 | ? "true" : "false"); | |
286 | tree_parse(tree, "/openprom/options/floating-point? %s", | |
287 | WITH_FLOATING_POINT ? "true" : "false"); | |
288 | tree_parse(tree, "/openprom/options/use-stdio? %s", | |
289 | ((WITH_STDIO == DO_USE_STDIO | |
290 | || WITH_STDIO == 0) | |
291 | ? "true" : "false")); | |
292 | tree_parse(tree, "/openprom/options/model \"%s", | |
293 | model_name[WITH_DEFAULT_MODEL]); | |
294 | tree_parse(tree, "/openprom/options/model-issue %d", | |
295 | MODEL_ISSUE_IGNORE); | |
296 | ||
297 | /* useful options */ | |
298 | } | |
299 | ||
300 | INLINE_EMUL_GENERIC void | |
301 | emul_add_tree_hardware(device *root) | |
302 | { | |
303 | int i; | |
304 | int nr_cpus = tree_find_integer_property(root, "/openprom/options/smp"); | |
305 | ||
306 | /* sanity check the number of processors */ | |
307 | if (nr_cpus > MAX_NR_PROCESSORS) | |
308 | error("Specified number of processors (%d) exceeds the number configured (%d).\n", | |
309 | nr_cpus, MAX_NR_PROCESSORS); | |
310 | ||
311 | /* set the number of address cells (1 or 2) */ | |
312 | tree_parse(root, "#address-cells %d", WITH_TARGET_WORD_BITSIZE / 32); | |
313 | ||
314 | /* add some memory */ | |
315 | if (tree_find_device(root, "/memory") == NULL) { | |
316 | unsigned_word memory_size = | |
317 | tree_find_integer_property(root, "/openprom/options/oea-memory-size"); | |
318 | const unsigned_word avail_start = 0x3000; | |
319 | tree_parse(root, "/memory@0/reg 0x0 0x%lx", | |
320 | (unsigned long)memory_size); | |
321 | /* reserve the first 0x3000 for the PowerPC interrupt table */ | |
322 | tree_parse(root, "/memory@0/available 0x%lx 0x%lx", | |
323 | (unsigned long)avail_start, | |
324 | (unsigned long)memory_size - avail_start); | |
325 | } | |
326 | ||
327 | /* our processors */ | |
328 | for (i = 0; i < nr_cpus; i++) { | |
329 | tree_parse(root, "/cpus/cpu@%d/cpu-nr %d", i, i); | |
330 | } | |
331 | ||
332 | /* the debugging pal - hide it in the openprom and don't attach it | |
333 | to any bus */ | |
334 | tree_parse(root, "/openprom/pal"); | |
335 | ||
336 | /* chosen etc */ | |
337 | tree_parse(root, "/chosen/stdin */openprom/pal"); | |
338 | tree_parse(root, "/chosen/stdout !/chosen/stdin"); | |
339 | tree_parse(root, "/chosen/memory */memory"); | |
340 | } | |
341 | ||
342 | #endif /* _EMUL_GENERIC_C_ */ |