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b85e4829 AC |
1 | /* The common simulator framework for GDB, the GNU Debugger. |
2 | ||
9b254dd1 | 3 | Copyright 2002, 2007, 2008 Free Software Foundation, Inc. |
b85e4829 AC |
4 | |
5 | Contributed by Andrew Cagney and Red Hat. | |
6 | ||
7 | This file is part of GDB. | |
8 | ||
9 | This program is free software; you can redistribute it and/or modify | |
10 | it under the terms of the GNU General Public License as published by | |
4744ac1b | 11 | the Free Software Foundation; either version 3 of the License, or |
b85e4829 AC |
12 | (at your option) any later version. |
13 | ||
14 | This program is distributed in the hope that it will be useful, | |
15 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
16 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
17 | GNU General Public License for more details. | |
18 | ||
19 | You should have received a copy of the GNU General Public License | |
4744ac1b | 20 | along with this program. If not, see <http://www.gnu.org/licenses/>. */ |
c906108c SS |
21 | |
22 | ||
23 | #ifndef SIM_CORE_H | |
24 | #define SIM_CORE_H | |
25 | ||
26 | ||
27 | /* core signals (error conditions) | |
28 | Define SIM_CORE_SIGNAL to catch these signals - see sim-core.c for | |
29 | details. */ | |
30 | ||
31 | typedef enum { | |
32 | sim_core_unmapped_signal, | |
33 | sim_core_unaligned_signal, | |
34 | nr_sim_core_signals, | |
35 | } sim_core_signals; | |
36 | ||
37 | /* Type of SIM_CORE_SIGNAL handler. */ | |
38 | typedef void (SIM_CORE_SIGNAL_FN) | |
39 | (SIM_DESC sd, sim_cpu *cpu, sim_cia cia, unsigned map, int nr_bytes, | |
40 | address_word addr, transfer_type transfer, sim_core_signals sig); | |
41 | ||
42 | extern SIM_CORE_SIGNAL_FN sim_core_signal; | |
43 | ||
44 | ||
45 | /* basic types */ | |
46 | ||
47 | typedef struct _sim_core_mapping sim_core_mapping; | |
48 | struct _sim_core_mapping { | |
49 | /* common */ | |
50 | int level; | |
51 | int space; | |
52 | unsigned_word base; | |
53 | unsigned_word bound; | |
54 | unsigned_word nr_bytes; | |
55 | unsigned mask; | |
56 | /* memory map */ | |
57 | void *free_buffer; | |
58 | void *buffer; | |
59 | /* callback map */ | |
60 | #if (WITH_HW) | |
61 | struct hw *device; | |
62 | #else | |
63 | device *device; | |
64 | #endif | |
65 | /* tracing */ | |
66 | int trace; | |
67 | /* growth */ | |
68 | sim_core_mapping *next; | |
69 | }; | |
70 | ||
71 | typedef struct _sim_core_map sim_core_map; | |
72 | struct _sim_core_map { | |
73 | sim_core_mapping *first; | |
74 | }; | |
75 | ||
76 | ||
77 | typedef struct _sim_core_common { | |
78 | sim_core_map map[nr_maps]; | |
79 | } sim_core_common; | |
80 | ||
81 | ||
82 | /* Main core structure */ | |
83 | ||
84 | typedef struct _sim_core sim_core; | |
85 | struct _sim_core { | |
86 | sim_core_common common; | |
87 | address_word byte_xor; /* apply xor universally */ | |
88 | }; | |
89 | ||
90 | ||
91 | /* Per CPU distributed component of the core. At present this is | |
92 | mostly a clone of the global core data structure. */ | |
93 | ||
94 | typedef struct _sim_cpu_core { | |
95 | sim_core_common common; | |
96 | address_word xor[WITH_XOR_ENDIAN + 1]; /* +1 to avoid zero-sized array */ | |
97 | } sim_cpu_core; | |
98 | ||
99 | ||
100 | /* Install the "core" module. */ | |
101 | ||
102 | extern SIM_RC sim_core_install (SIM_DESC sd); | |
103 | ||
104 | ||
105 | ||
106 | /* Create a memory region within the core. | |
107 | ||
108 | CPU - when non NULL, specifes the single processor that the memory | |
109 | space is to be attached to. (INIMPLEMENTED). | |
110 | ||
111 | LEVEL - specifies the ordering of the memory region. Lower regions | |
112 | are searched first. Within a level, memory regions can not | |
113 | overlap. | |
114 | ||
115 | MAPMASK - Bitmask specifying the memory maps that the region is to | |
116 | be attached to. Typically the enums sim-basics.h:access_* are used. | |
117 | ||
118 | ADDRESS_SPACE - For device regions, a MAP:ADDRESS pair is | |
119 | translated into ADDRESS_SPACE:OFFSET before being passed to the | |
120 | client device. | |
121 | ||
122 | MODULO - when the simulator has been configured WITH_MODULO support | |
123 | and is greater than zero, specifies that accesses to the region | |
124 | [ADDR .. ADDR+NR_BYTES) should be mapped onto the sub region [ADDR | |
125 | .. ADDR+MODULO). The modulo value must be a power of two. | |
126 | ||
127 | DEVICE - When non NULL, indicates that this is a callback memory | |
128 | space and specified device's memory callback handler should be | |
129 | called. | |
130 | ||
131 | OPTIONAL_BUFFER - when non NULL, specifies the buffer to use for | |
132 | data read & written to the region. Normally a more efficient | |
133 | internal structure is used. It is assumed that buffer is allocated | |
134 | such that the byte alignmed of OPTIONAL_BUFFER matches ADDR vis | |
135 | (OPTIONAL_BUFFER % 8) == (ADDR % 8)). It is defined to be a sub-optimal | |
136 | hook that allows clients to do nasty things that the interface doesn't | |
137 | accomodate. */ | |
138 | ||
139 | extern void sim_core_attach | |
140 | (SIM_DESC sd, | |
141 | sim_cpu *cpu, | |
142 | int level, | |
143 | unsigned mapmask, | |
144 | int address_space, | |
145 | address_word addr, | |
146 | address_word nr_bytes, | |
147 | unsigned modulo, | |
148 | #if (WITH_HW) | |
149 | struct hw *client, | |
150 | #else | |
151 | device *client, | |
152 | #endif | |
153 | void *optional_buffer); | |
154 | ||
155 | ||
156 | /* Delete a memory section within the core. | |
157 | ||
158 | */ | |
159 | ||
160 | extern void sim_core_detach | |
161 | (SIM_DESC sd, | |
162 | sim_cpu *cpu, | |
163 | int level, | |
164 | int address_space, | |
165 | address_word addr); | |
166 | ||
167 | ||
168 | /* Variable sized read/write | |
169 | ||
170 | Transfer a variable sized block of raw data between the host and | |
6439295f | 171 | target. Should any problems occur, the number of bytes |
c906108c SS |
172 | successfully transfered is returned. |
173 | ||
174 | No host/target byte endian conversion is performed. No xor-endian | |
175 | conversion is performed. | |
176 | ||
177 | If CPU argument, when non NULL, specifies the processor specific | |
178 | address map that is to be used in the transfer. */ | |
179 | ||
180 | ||
181 | extern unsigned sim_core_read_buffer | |
182 | (SIM_DESC sd, | |
183 | sim_cpu *cpu, | |
184 | unsigned map, | |
185 | void *buffer, | |
186 | address_word addr, | |
187 | unsigned nr_bytes); | |
188 | ||
189 | extern unsigned sim_core_write_buffer | |
190 | (SIM_DESC sd, | |
191 | sim_cpu *cpu, | |
192 | unsigned map, | |
193 | const void *buffer, | |
194 | address_word addr, | |
195 | unsigned nr_bytes); | |
196 | ||
197 | ||
198 | ||
199 | /* Configure the core's XOR endian transfer mode. Only applicable | |
200 | when WITH_XOR_ENDIAN is enabled. | |
201 | ||
202 | Targets suporting XOR endian, shall notify the core of any changes | |
203 | in state via this call. | |
204 | ||
205 | The CPU argument, when non NULL, specifes the single processor that | |
206 | the xor-endian configuration is to be applied to. */ | |
207 | ||
208 | extern void sim_core_set_xor | |
209 | (SIM_DESC sd, | |
210 | sim_cpu *cpu, | |
211 | int is_xor); | |
212 | ||
213 | ||
214 | /* XOR version of variable sized read/write. | |
215 | ||
216 | Transfer a variable sized block of raw data between the host and | |
6439295f | 217 | target. Should any problems occur, the number of bytes |
c906108c SS |
218 | successfully transfered is returned. |
219 | ||
220 | No host/target byte endian conversion is performed. If applicable | |
221 | (WITH_XOR_ENDIAN and xor-endian set), xor-endian conversion *is* | |
222 | performed. | |
223 | ||
224 | If CPU argument, when non NULL, specifies the processor specific | |
225 | address map that is to be used in the transfer. */ | |
226 | ||
227 | extern unsigned sim_core_xor_read_buffer | |
228 | (SIM_DESC sd, | |
229 | sim_cpu *cpu, | |
230 | unsigned map, | |
231 | void *buffer, | |
232 | address_word addr, | |
233 | unsigned nr_bytes); | |
234 | ||
235 | extern unsigned sim_core_xor_write_buffer | |
236 | (SIM_DESC sd, | |
237 | sim_cpu *cpu, | |
238 | unsigned map, | |
239 | const void *buffer, | |
240 | address_word addr, | |
241 | unsigned nr_bytes); | |
242 | ||
243 | ||
244 | ||
245 | /* Fixed sized, processor oriented, read/write. | |
246 | ||
247 | Transfer a fixed amout of memory between the host and target. The | |
248 | data transfered is translated from/to host to/from target byte | |
249 | order (including xor endian). Should the transfer fail, the | |
250 | operation shall abort (no return). | |
251 | ||
252 | ALIGNED assumes yhat the specified ADDRESS is correctly alligned | |
253 | for an N byte transfer (no alignment checks are made). Passing an | |
254 | incorrectly aligned ADDRESS is erroneous. | |
255 | ||
256 | UNALIGNED checks/modifies the ADDRESS according to the requirements | |
257 | of an N byte transfer. Action, as defined by WITH_ALIGNMENT, being | |
258 | taken should the check fail. | |
259 | ||
260 | MISSALIGNED transfers the data regardless. | |
261 | ||
262 | Misaligned xor-endian accesses are broken into a sequence of | |
263 | transfers each <= WITH_XOR_ENDIAN bytes */ | |
264 | ||
265 | ||
266 | #define DECLARE_SIM_CORE_WRITE_N(ALIGNMENT,N,M) \ | |
267 | INLINE_SIM_CORE\ | |
268 | (void) sim_core_write_##ALIGNMENT##_##N \ | |
269 | (sim_cpu *cpu, \ | |
270 | sim_cia cia, \ | |
271 | unsigned map, \ | |
272 | address_word addr, \ | |
273 | unsigned_##M val); | |
274 | ||
275 | DECLARE_SIM_CORE_WRITE_N(aligned,1,1) | |
276 | DECLARE_SIM_CORE_WRITE_N(aligned,2,2) | |
277 | DECLARE_SIM_CORE_WRITE_N(aligned,4,4) | |
278 | DECLARE_SIM_CORE_WRITE_N(aligned,8,8) | |
279 | DECLARE_SIM_CORE_WRITE_N(aligned,16,16) | |
280 | ||
281 | #define sim_core_write_unaligned_1 sim_core_write_aligned_1 | |
282 | DECLARE_SIM_CORE_WRITE_N(unaligned,2,2) | |
283 | DECLARE_SIM_CORE_WRITE_N(unaligned,4,4) | |
284 | DECLARE_SIM_CORE_WRITE_N(unaligned,8,8) | |
285 | DECLARE_SIM_CORE_WRITE_N(unaligned,16,16) | |
286 | ||
287 | DECLARE_SIM_CORE_WRITE_N(misaligned,3,4) | |
288 | DECLARE_SIM_CORE_WRITE_N(misaligned,5,8) | |
289 | DECLARE_SIM_CORE_WRITE_N(misaligned,6,8) | |
290 | DECLARE_SIM_CORE_WRITE_N(misaligned,7,8) | |
291 | ||
292 | #define sim_core_write_1 sim_core_write_aligned_1 | |
293 | #define sim_core_write_2 sim_core_write_aligned_2 | |
294 | #define sim_core_write_4 sim_core_write_aligned_4 | |
295 | #define sim_core_write_8 sim_core_write_aligned_8 | |
296 | #define sim_core_write_16 sim_core_write_aligned_16 | |
297 | ||
298 | #define sim_core_write_unaligned_word XCONCAT2(sim_core_write_unaligned_,WITH_TARGET_WORD_BITSIZE) | |
299 | #define sim_core_write_aligned_word XCONCAT2(sim_core_write_aligned_,WITH_TARGET_WORD_BITSIZE) | |
300 | #define sim_core_write_word XCONCAT2(sim_core_write_,WITH_TARGET_WORD_BITSIZE) | |
301 | ||
302 | #undef DECLARE_SIM_CORE_WRITE_N | |
303 | ||
304 | ||
305 | #define DECLARE_SIM_CORE_READ_N(ALIGNMENT,N,M) \ | |
306 | INLINE_SIM_CORE\ | |
307 | (unsigned_##M) sim_core_read_##ALIGNMENT##_##N \ | |
308 | (sim_cpu *cpu, \ | |
309 | sim_cia cia, \ | |
310 | unsigned map, \ | |
311 | address_word addr); | |
312 | ||
313 | DECLARE_SIM_CORE_READ_N(aligned,1,1) | |
314 | DECLARE_SIM_CORE_READ_N(aligned,2,2) | |
315 | DECLARE_SIM_CORE_READ_N(aligned,4,4) | |
316 | DECLARE_SIM_CORE_READ_N(aligned,8,8) | |
317 | DECLARE_SIM_CORE_READ_N(aligned,16,16) | |
318 | ||
319 | #define sim_core_read_unaligned_1 sim_core_read_aligned_1 | |
320 | DECLARE_SIM_CORE_READ_N(unaligned,2,2) | |
321 | DECLARE_SIM_CORE_READ_N(unaligned,4,4) | |
322 | DECLARE_SIM_CORE_READ_N(unaligned,8,8) | |
323 | DECLARE_SIM_CORE_READ_N(unaligned,16,16) | |
324 | ||
325 | DECLARE_SIM_CORE_READ_N(misaligned,3,4) | |
326 | DECLARE_SIM_CORE_READ_N(misaligned,5,8) | |
327 | DECLARE_SIM_CORE_READ_N(misaligned,6,8) | |
328 | DECLARE_SIM_CORE_READ_N(misaligned,7,8) | |
329 | ||
330 | ||
331 | #define sim_core_read_1 sim_core_read_aligned_1 | |
332 | #define sim_core_read_2 sim_core_read_aligned_2 | |
333 | #define sim_core_read_4 sim_core_read_aligned_4 | |
334 | #define sim_core_read_8 sim_core_read_aligned_8 | |
335 | #define sim_core_read_16 sim_core_read_aligned_16 | |
336 | ||
337 | #define sim_core_read_unaligned_word XCONCAT2(sim_core_read_unaligned_,WITH_TARGET_WORD_BITSIZE) | |
338 | #define sim_core_read_aligned_word XCONCAT2(sim_core_read_aligned_,WITH_TARGET_WORD_BITSIZE) | |
339 | #define sim_core_read_word XCONCAT2(sim_core_read_,WITH_TARGET_WORD_BITSIZE) | |
340 | ||
341 | #undef DECLARE_SIM_CORE_READ_N | |
342 | ||
343 | ||
7a292a7a SS |
344 | #if (WITH_DEVICES) |
345 | /* TODO: create sim/common/device.h */ | |
346 | /* These are defined with each particular cpu. */ | |
347 | void device_error (device *me, char* message, ...); | |
348 | int device_io_read_buffer(device *me, void *dest, int space, address_word addr, unsigned nr_bytes, SIM_DESC sd, sim_cpu *processor, sim_cia cia); | |
349 | int device_io_write_buffer(device *me, const void *source, int space, address_word addr, unsigned nr_bytes, SIM_DESC sd, sim_cpu *processor, sim_cia cia); | |
350 | #endif | |
351 | ||
352 | ||
c906108c | 353 | #endif |