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18c64df6 | 1 | /* MIPS Simulator definition. |
eb00d706 | 2 | Copyright (C) 1997, 1998 Free Software Foundation, Inc. |
18c64df6 AC |
3 | Contributed by Cygnus Support. |
4 | ||
5 | This file is part of GDB, the GNU debugger. | |
6 | ||
7 | This program is free software; you can redistribute it and/or modify | |
8 | it under the terms of the GNU General Public License as published by | |
9 | the Free Software Foundation; either version 2, or (at your option) | |
10 | any later version. | |
11 | ||
12 | This program is distributed in the hope that it will be useful, | |
13 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
14 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
15 | GNU General Public License for more details. | |
16 | ||
17 | You should have received a copy of the GNU General Public License along | |
18 | with this program; if not, write to the Free Software Foundation, Inc., | |
19 | 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */ | |
20 | ||
21 | #ifndef SIM_MAIN_H | |
22 | #define SIM_MAIN_H | |
23 | ||
24 | /* This simulator doesn't cache the Current Instruction Address */ | |
7ce8b917 AC |
25 | /* #define SIM_ENGINE_HALT_HOOK(SD, LAST_CPU, CIA) */ |
26 | /* #define SIM_ENGINE_RESUME_HOOK(SD, LAST_CPU, CIA) */ | |
18c64df6 AC |
27 | |
28 | #define SIM_HAVE_BIENDIAN | |
18c64df6 AC |
29 | |
30 | ||
31 | /* hobble some common features for moment */ | |
18c64df6 | 32 | #define WITH_WATCHPOINTS 1 |
63be8feb | 33 | #define WITH_MODULO_MEMORY 1 |
18c64df6 AC |
34 | |
35 | #include "sim-basics.h" | |
36 | ||
dad6f1f3 | 37 | typedef address_word sim_cia; |
18c64df6 | 38 | |
63be8feb AC |
39 | #if (WITH_IGEN) |
40 | /* Get the number of instructions. FIXME: must be a more elegant way | |
41 | of doing this. */ | |
42 | #include "itable.h" | |
43 | #define MAX_INSNS (nr_itable_entries) | |
eb00d706 | 44 | #define INSN_NAME(cpu,i) itable[(i)].name |
63be8feb AC |
45 | #endif |
46 | ||
18c64df6 AC |
47 | #include "sim-base.h" |
48 | ||
49 | ||
50 | /* Depreciated macros and types for manipulating 64bit values. Use | |
51 | ../common/sim-bits.h and ../common/sim-endian.h macros instead. */ | |
52 | ||
53 | typedef signed64 word64; | |
54 | typedef unsigned64 uword64; | |
55 | ||
56 | #define WORD64LO(t) (unsigned int)((t)&0xFFFFFFFF) | |
57 | #define WORD64HI(t) (unsigned int)(((uword64)(t))>>32) | |
58 | #define SET64LO(t) (((uword64)(t))&0xFFFFFFFF) | |
59 | #define SET64HI(t) (((uword64)(t))<<32) | |
60 | #define WORD64(h,l) ((word64)((SET64HI(h)|SET64LO(l)))) | |
61 | #define UWORD64(h,l) (SET64HI(h)|SET64LO(l)) | |
62 | ||
63 | /* Sign-extend the given value (e) as a value (b) bits long. We cannot | |
64 | assume the HI32bits of the operand are zero, so we must perform a | |
65 | mask to ensure we can use the simple subtraction to sign-extend. */ | |
66 | #define SIGNEXTEND(e,b) \ | |
fb5a2a3e | 67 | ((unsigned_word) \ |
18c64df6 AC |
68 | (((e) & ((uword64) 1 << ((b) - 1))) \ |
69 | ? (((e) & (((uword64) 1 << (b)) - 1)) - ((uword64)1 << (b))) \ | |
fb5a2a3e | 70 | : ((e) & (((((uword64) 1 << ((b) - 1)) - 1) << 1) | 1)))) |
18c64df6 AC |
71 | |
72 | /* Check if a value will fit within a halfword: */ | |
73 | #define NOTHALFWORDVALUE(v) ((((((uword64)(v)>>16) == 0) && !((v) & ((unsigned)1 << 15))) || (((((uword64)(v)>>32) == 0xFFFFFFFF) && ((((uword64)(v)>>16) & 0xFFFF) == 0xFFFF)) && ((v) & ((unsigned)1 << 15)))) ? (1 == 0) : (1 == 1)) | |
74 | ||
18c64df6 | 75 | |
ea985d24 | 76 | |
0c2c5f61 AC |
77 | /* Floating-point operations: */ |
78 | ||
2d44e12a AC |
79 | #include "sim-fpu.h" |
80 | ||
0c2c5f61 AC |
81 | /* FPU registers must be one of the following types. All other values |
82 | are reserved (and undefined). */ | |
83 | typedef enum { | |
84 | fmt_single = 0, | |
85 | fmt_double = 1, | |
86 | fmt_word = 4, | |
87 | fmt_long = 5, | |
88 | /* The following are well outside the normal acceptable format | |
89 | range, and are used in the register status vector. */ | |
90 | fmt_unknown = 0x10000000, | |
91 | fmt_uninterpreted = 0x20000000, | |
a09a30d2 | 92 | fmt_uninterpreted_32 = 0x40000000, |
9ade226a | 93 | fmt_uninterpreted_64 = 0x80000000U, |
0c2c5f61 AC |
94 | } FP_formats; |
95 | ||
01737f42 AC |
96 | unsigned64 value_fpr PARAMS ((SIM_DESC sd, sim_cpu *cpu, address_word cia, int fpr, FP_formats)); |
97 | #define ValueFPR(FPR,FMT) value_fpr (SD, CPU, cia, (FPR), (FMT)) | |
0c2c5f61 | 98 | |
01737f42 AC |
99 | void store_fpr PARAMS ((SIM_DESC sd, sim_cpu *cpu, address_word cia, int fpr, FP_formats fmt, unsigned64 value)); |
100 | #define StoreFPR(FPR,FMT,VALUE) store_fpr (SD, CPU, cia, (FPR), (FMT), (VALUE)) | |
0c2c5f61 AC |
101 | |
102 | int NaN PARAMS ((unsigned64 op, FP_formats fmt)); | |
103 | int Infinity PARAMS ((unsigned64 op, FP_formats fmt)); | |
104 | int Less PARAMS ((unsigned64 op1, unsigned64 op2, FP_formats fmt)); | |
105 | int Equal PARAMS ((unsigned64 op1, unsigned64 op2, FP_formats fmt)); | |
106 | unsigned64 AbsoluteValue PARAMS ((unsigned64 op, FP_formats fmt)); | |
107 | unsigned64 Negate PARAMS ((unsigned64 op, FP_formats fmt)); | |
108 | unsigned64 Add PARAMS ((unsigned64 op1, unsigned64 op2, FP_formats fmt)); | |
109 | unsigned64 Sub PARAMS ((unsigned64 op1, unsigned64 op2, FP_formats fmt)); | |
110 | unsigned64 Multiply PARAMS ((unsigned64 op1, unsigned64 op2, FP_formats fmt)); | |
111 | unsigned64 Divide PARAMS ((unsigned64 op1, unsigned64 op2, FP_formats fmt)); | |
112 | unsigned64 Recip PARAMS ((unsigned64 op, FP_formats fmt)); | |
113 | unsigned64 SquareRoot PARAMS ((unsigned64 op, FP_formats fmt)); | |
a48e8c8d AC |
114 | unsigned64 Max PARAMS ((unsigned64 op1, unsigned64 op2, FP_formats fmt)); |
115 | unsigned64 Min PARAMS ((unsigned64 op1, unsigned64 op2, FP_formats fmt)); | |
01737f42 AC |
116 | unsigned64 convert PARAMS ((SIM_DESC sd, sim_cpu *cpu, address_word cia, int rm, unsigned64 op, FP_formats from, FP_formats to)); |
117 | #define Convert(rm,op,from,to) \ | |
118 | convert (SD, CPU, cia, rm, op, from, to) | |
0c2c5f61 | 119 | |
ea985d24 AC |
120 | /* Macro to update FPSR condition-code field. This is complicated by |
121 | the fact that there is a hole in the index range of the bits within | |
122 | the FCSR register. Also, the number of bits visible depends on the | |
123 | MIPS ISA version being supported. */ | |
124 | ||
125 | #define SETFCC(cc,v) {\ | |
126 | int bit = ((cc == 0) ? 23 : (24 + (cc)));\ | |
127 | FCSR = ((FCSR & ~(1 << bit)) | ((v) << bit));\ | |
128 | } | |
ca6f76d1 | 129 | #define GETFCC(cc) (((((cc) == 0) ? (FCSR & (1 << 23)) : (FCSR & (1 << (24 + (cc))))) != 0) ? 1U : 0) |
ea985d24 AC |
130 | |
131 | /* This should be the COC1 value at the start of the preceding | |
132 | instruction: */ | |
133 | #define PREVCOC1() ((STATE & simPCOC1) ? 1 : 0) | |
134 | ||
135 | #if 1 | |
a48e8c8d | 136 | #define SizeFGR() (WITH_TARGET_FLOATING_POINT_BITSIZE) |
ea985d24 AC |
137 | #else |
138 | /* They depend on the CPU being simulated */ | |
139 | #define SizeFGR() ((WITH_TARGET_WORD_BITSIZE == 64 && ((SR & status_FR) == 1)) ? 64 : 32) | |
140 | #endif | |
141 | ||
142 | /* Standard FCRS bits: */ | |
143 | #define IR (0) /* Inexact Result */ | |
144 | #define UF (1) /* UnderFlow */ | |
145 | #define OF (2) /* OverFlow */ | |
146 | #define DZ (3) /* Division by Zero */ | |
147 | #define IO (4) /* Invalid Operation */ | |
148 | #define UO (5) /* Unimplemented Operation */ | |
149 | ||
150 | /* Get masks for individual flags: */ | |
151 | #if 1 /* SAFE version */ | |
152 | #define FP_FLAGS(b) (((unsigned)(b) < 5) ? (1 << ((b) + 2)) : 0) | |
153 | #define FP_ENABLE(b) (((unsigned)(b) < 5) ? (1 << ((b) + 7)) : 0) | |
154 | #define FP_CAUSE(b) (((unsigned)(b) < 6) ? (1 << ((b) + 12)) : 0) | |
155 | #else | |
156 | #define FP_FLAGS(b) (1 << ((b) + 2)) | |
157 | #define FP_ENABLE(b) (1 << ((b) + 7)) | |
158 | #define FP_CAUSE(b) (1 << ((b) + 12)) | |
159 | #endif | |
160 | ||
161 | #define FP_FS (1 << 24) /* MIPS III onwards : Flush to Zero */ | |
162 | ||
163 | #define FP_MASK_RM (0x3) | |
164 | #define FP_SH_RM (0) | |
165 | #define FP_RM_NEAREST (0) /* Round to nearest (Round) */ | |
166 | #define FP_RM_TOZERO (1) /* Round to zero (Trunc) */ | |
167 | #define FP_RM_TOPINF (2) /* Round to Plus infinity (Ceil) */ | |
168 | #define FP_RM_TOMINF (3) /* Round to Minus infinity (Floor) */ | |
169 | #define GETRM() (int)((FCSR >> FP_SH_RM) & FP_MASK_RM) | |
170 | ||
8c8dd0c4 JL |
171 | /* start-sanitize-sky */ |
172 | #ifdef TARGET_SKY | |
173 | #ifdef SKY_FUNIT | |
60372a3f | 174 | #include <assert.h> |
8c8dd0c4 JL |
175 | #include "wf.h" |
176 | #endif | |
177 | #endif | |
178 | /* end-sanitize-sky */ | |
179 | ||
180 | ||
181 | ||
ea985d24 AC |
182 | |
183 | ||
421cbaae AC |
184 | /* HI/LO register accesses */ |
185 | ||
186 | /* For some MIPS targets, the HI/LO registers have certain timing | |
187 | restrictions in that, for instance, a read of a HI register must be | |
188 | separated by at least three instructions from a preceeding read. | |
189 | ||
190 | The struct below is used to record the last access by each of A MT, | |
191 | MF or other OP instruction to a HI/LO register. See mips.igen for | |
192 | more details. */ | |
193 | ||
194 | typedef struct _hilo_access { | |
195 | signed64 timestamp; | |
196 | address_word cia; | |
197 | } hilo_access; | |
198 | ||
199 | typedef struct _hilo_history { | |
200 | hilo_access mt; | |
201 | hilo_access mf; | |
202 | hilo_access op; | |
203 | } hilo_history; | |
204 | ||
205 | ||
206 | ||
207 | ||
ea985d24 AC |
208 | /* Integer ALU operations: */ |
209 | ||
210 | #include "sim-alu.h" | |
211 | ||
212 | #define ALU32_END(ANS) \ | |
213 | if (ALU32_HAD_OVERFLOW) \ | |
214 | SignalExceptionIntegerOverflow (); \ | |
895a7dc2 | 215 | (ANS) = (signed32) ALU32_OVERFLOW_RESULT |
ea985d24 AC |
216 | |
217 | ||
218 | #define ALU64_END(ANS) \ | |
219 | if (ALU64_HAD_OVERFLOW) \ | |
220 | SignalExceptionIntegerOverflow (); \ | |
92ad193b | 221 | (ANS) = ALU64_OVERFLOW_RESULT; |
ea985d24 | 222 | |
a48e8c8d | 223 | |
ea985d24 AC |
224 | /* start-sanitize-r5900 */ |
225 | ||
f89c0689 AC |
226 | /* Figure 10-5 FPU Control/Status Register. |
227 | Note: some of these bits are different to what is found in a | |
228 | standard MIPS manual. */ | |
229 | enum { | |
230 | R5900_FCSR_C = BIT (23), /* OK */ | |
231 | R5900_FCSR_I = BIT (17), | |
232 | R5900_FCSR_D = BIT (16), | |
233 | R5900_FCSR_O = BIT (15), | |
234 | R5900_FCSR_U = BIT (14), | |
235 | R5900_FCSR_CAUSE = MASK (16,14), | |
236 | R5900_FCSR_SI = BIT (6), | |
237 | R5900_FCSR_SD = BIT (5), | |
238 | R5900_FCSR_SO = BIT (4), | |
239 | R5900_FCSR_SU = BIT (3), | |
240 | }; | |
241 | ||
421cbaae AC |
242 | /* Table 10-1 FP format values. |
243 | Note: some of these bits are different to what is found in a | |
244 | standard MIPS manual. */ | |
245 | enum { | |
246 | R5900_EXPMAX = 128, | |
247 | R5900_EXPMIN = -127, | |
248 | R5900_EXPBIAS = 127, | |
249 | }; | |
250 | ||
eb00d706 DE |
251 | /* MAX and MIN FP values */ |
252 | enum { | |
253 | R5900_FPMAX = LSMASK32 (30, 0), | |
254 | R5900_FPMIN = LSMASK32 (31, 0), | |
255 | }; | |
256 | ||
421cbaae AC |
257 | |
258 | ||
a48e8c8d AC |
259 | typedef struct _sim_r5900_cpu { |
260 | ||
261 | /* The R5900 has 32 x 128bit general purpose registers. | |
262 | Fortunatly, the high 64 bits are only touched by multimedia (MMI) | |
263 | instructions. The normal mips instructions just use the lower 64 | |
264 | bits. To avoid changing the older parts of the simulator to | |
265 | handle this weirdness, the high 64 bits of each register are kept | |
266 | in a separate array (registers1). The high 64 bits of any | |
267 | register are by convention refered by adding a '1' to the end of | |
268 | the normal register's name. So LO still refers to the low 64 | |
269 | bits of the LO register, LO1 refers to the high 64 bits of that | |
270 | same register. */ | |
271 | signed_word gpr1[32]; | |
272 | #define GPR1 ((CPU)->r5900.gpr1) | |
273 | signed_word lo1; | |
274 | signed_word hi1; | |
275 | #define LO1 ((CPU)->r5900.lo1) | |
276 | #define HI1 ((CPU)->r5900.hi1) | |
277 | ||
278 | /* The R5900 defines a shift amount register, that controls the | |
279 | amount of certain shift instructions */ | |
280 | unsigned_word sa; /* the shift amount register */ | |
281 | #define REGISTER_SA (124) /* GET RID IF THIS! */ | |
282 | #define SA ((CPU)->r5900.sa) | |
283 | ||
284 | /* The R5900, in addition to the (almost) standard floating point | |
285 | registers, defines a 32 bit accumulator. This is used in | |
286 | multiply/accumulate style instructions */ | |
287 | fp_word acc; /* floating-point accumulator */ | |
288 | #define ACC ((CPU)->r5900.acc) | |
289 | ||
290 | /* See comments below about needing to count cycles between updating | |
291 | and setting HI/LO registers */ | |
421cbaae AC |
292 | hilo_history hi1_history; |
293 | #define HI1HISTORY (&(CPU)->r5900.hi1_history) | |
294 | hilo_history lo1_history; | |
295 | #define LO1HISTORY (&(CPU)->r5900.lo1_history) | |
a48e8c8d AC |
296 | |
297 | } sim_r5900_cpu; | |
298 | ||
ea985d24 AC |
299 | #define BYTES_IN_MMI_REGS (sizeof(signed_word) + sizeof(signed_word)) |
300 | #define HALFWORDS_IN_MMI_REGS (BYTES_IN_MMI_REGS/2) | |
301 | #define WORDS_IN_MMI_REGS (BYTES_IN_MMI_REGS/4) | |
302 | #define DOUBLEWORDS_IN_MMI_REGS (BYTES_IN_MMI_REGS/8) | |
303 | ||
304 | #define BYTES_IN_MIPS_REGS (sizeof(signed_word)) | |
305 | #define HALFWORDS_IN_MIPS_REGS (BYTES_IN_MIPS_REGS/2) | |
306 | #define WORDS_IN_MIPS_REGS (BYTES_IN_MIPS_REGS/4) | |
307 | #define DOUBLEWORDS_IN_MIPS_REGS (BYTES_IN_MIPS_REGS/8) | |
308 | ||
309 | /* SUB_REG_FETCH - return as lvalue some sub-part of a "register" | |
310 | T - type of the sub part | |
311 | TC - # of T's in the mips part of the "register" | |
312 | I - index (from 0) of desired sub part | |
313 | A - low part of "register" | |
314 | A1 - high part of register | |
315 | */ | |
316 | #define SUB_REG_FETCH(T,TC,A,A1,I) \ | |
317 | (*(((I) < (TC) ? (T*)(A) : (T*)(A1)) \ | |
318 | + (CURRENT_HOST_BYTE_ORDER == BIG_ENDIAN \ | |
319 | ? ((TC) - 1 - (I) % (TC)) \ | |
320 | : ((I) % (TC)) \ | |
321 | ) \ | |
322 | ) \ | |
323 | ) | |
324 | ||
325 | /* | |
326 | GPR_<type>(R,I) - return, as lvalue, the I'th <type> of general register R | |
327 | where <type> has two letters: | |
328 | 1 is S=signed or U=unsigned | |
329 | 2 is B=byte H=halfword W=word D=doubleword | |
330 | */ | |
331 | ||
332 | #define SUB_REG_SB(A,A1,I) SUB_REG_FETCH(signed8, BYTES_IN_MIPS_REGS, A, A1, I) | |
333 | #define SUB_REG_SH(A,A1,I) SUB_REG_FETCH(signed16, HALFWORDS_IN_MIPS_REGS, A, A1, I) | |
334 | #define SUB_REG_SW(A,A1,I) SUB_REG_FETCH(signed32, WORDS_IN_MIPS_REGS, A, A1, I) | |
335 | #define SUB_REG_SD(A,A1,I) SUB_REG_FETCH(signed64, DOUBLEWORDS_IN_MIPS_REGS, A, A1, I) | |
336 | ||
337 | #define SUB_REG_UB(A,A1,I) SUB_REG_FETCH(unsigned8, BYTES_IN_MIPS_REGS, A, A1, I) | |
338 | #define SUB_REG_UH(A,A1,I) SUB_REG_FETCH(unsigned16, HALFWORDS_IN_MIPS_REGS, A, A1, I) | |
339 | #define SUB_REG_UW(A,A1,I) SUB_REG_FETCH(unsigned32, WORDS_IN_MIPS_REGS, A, A1, I) | |
340 | #define SUB_REG_UD(A,A1,I) SUB_REG_FETCH(unsigned64, DOUBLEWORDS_IN_MIPS_REGS, A, A1, I) | |
341 | ||
a48e8c8d AC |
342 | #define GPR_SB(R,I) SUB_REG_SB(&GPR[R], &GPR1[R], I) |
343 | #define GPR_SH(R,I) SUB_REG_SH(&GPR[R], &GPR1[R], I) | |
344 | #define GPR_SW(R,I) SUB_REG_SW(&GPR[R], &GPR1[R], I) | |
345 | #define GPR_SD(R,I) SUB_REG_SD(&GPR[R], &GPR1[R], I) | |
ea985d24 | 346 | |
a48e8c8d AC |
347 | #define GPR_UB(R,I) SUB_REG_UB(&GPR[R], &GPR1[R], I) |
348 | #define GPR_UH(R,I) SUB_REG_UH(&GPR[R], &GPR1[R], I) | |
349 | #define GPR_UW(R,I) SUB_REG_UW(&GPR[R], &GPR1[R], I) | |
350 | #define GPR_UD(R,I) SUB_REG_UD(&GPR[R], &GPR1[R], I) | |
ea985d24 | 351 | |
9ade226a FCE |
352 | #define TMP_DCL unsigned64 tmp_reg, tmp_reg1 |
353 | ||
354 | #define TMP_SB(I) SUB_REG_SB(&tmp_reg, &tmp_reg1, I) | |
355 | #define TMP_SH(I) SUB_REG_SH(&tmp_reg, &tmp_reg1, I) | |
356 | #define TMP_SW(I) SUB_REG_SW(&tmp_reg, &tmp_reg1, I) | |
357 | #define TMP_SD(I) SUB_REG_SD(&tmp_reg, &tmp_reg1, I) | |
358 | ||
359 | #define TMP_UB(I) SUB_REG_UB(&tmp_reg, &tmp_reg1, I) | |
360 | #define TMP_UH(I) SUB_REG_UH(&tmp_reg, &tmp_reg1, I) | |
361 | #define TMP_UW(I) SUB_REG_UW(&tmp_reg, &tmp_reg1, I) | |
362 | #define TMP_UD(I) SUB_REG_UD(&tmp_reg, &tmp_reg1, I) | |
363 | ||
364 | #define TMP_WRT(R) do { GPR[R] = tmp_reg; GPR1[R] = tmp_reg1; } while(0) | |
ea985d24 AC |
365 | |
366 | #define RS_SB(I) SUB_REG_SB(&rs_reg, &rs_reg1, I) | |
367 | #define RS_SH(I) SUB_REG_SH(&rs_reg, &rs_reg1, I) | |
368 | #define RS_SW(I) SUB_REG_SW(&rs_reg, &rs_reg1, I) | |
369 | #define RS_SD(I) SUB_REG_SD(&rs_reg, &rs_reg1, I) | |
370 | ||
371 | #define RS_UB(I) SUB_REG_UB(&rs_reg, &rs_reg1, I) | |
372 | #define RS_UH(I) SUB_REG_UH(&rs_reg, &rs_reg1, I) | |
373 | #define RS_UW(I) SUB_REG_UW(&rs_reg, &rs_reg1, I) | |
374 | #define RS_UD(I) SUB_REG_UD(&rs_reg, &rs_reg1, I) | |
375 | ||
376 | #define RT_SB(I) SUB_REG_SB(&rt_reg, &rt_reg1, I) | |
377 | #define RT_SH(I) SUB_REG_SH(&rt_reg, &rt_reg1, I) | |
378 | #define RT_SW(I) SUB_REG_SW(&rt_reg, &rt_reg1, I) | |
379 | #define RT_SD(I) SUB_REG_SD(&rt_reg, &rt_reg1, I) | |
380 | ||
381 | #define RT_UB(I) SUB_REG_UB(&rt_reg, &rt_reg1, I) | |
382 | #define RT_UH(I) SUB_REG_UH(&rt_reg, &rt_reg1, I) | |
383 | #define RT_UW(I) SUB_REG_UW(&rt_reg, &rt_reg1, I) | |
384 | #define RT_UD(I) SUB_REG_UD(&rt_reg, &rt_reg1, I) | |
385 | ||
386 | ||
387 | ||
388 | #define LO_SB(I) SUB_REG_SB(&LO, &LO1, I) | |
389 | #define LO_SH(I) SUB_REG_SH(&LO, &LO1, I) | |
390 | #define LO_SW(I) SUB_REG_SW(&LO, &LO1, I) | |
391 | #define LO_SD(I) SUB_REG_SD(&LO, &LO1, I) | |
392 | ||
393 | #define LO_UB(I) SUB_REG_UB(&LO, &LO1, I) | |
394 | #define LO_UH(I) SUB_REG_UH(&LO, &LO1, I) | |
395 | #define LO_UW(I) SUB_REG_UW(&LO, &LO1, I) | |
396 | #define LO_UD(I) SUB_REG_UD(&LO, &LO1, I) | |
397 | ||
398 | #define HI_SB(I) SUB_REG_SB(&HI, &HI1, I) | |
399 | #define HI_SH(I) SUB_REG_SH(&HI, &HI1, I) | |
400 | #define HI_SW(I) SUB_REG_SW(&HI, &HI1, I) | |
401 | #define HI_SD(I) SUB_REG_SD(&HI, &HI1, I) | |
402 | ||
403 | #define HI_UB(I) SUB_REG_UB(&HI, &HI1, I) | |
404 | #define HI_UH(I) SUB_REG_UH(&HI, &HI1, I) | |
405 | #define HI_UW(I) SUB_REG_UW(&HI, &HI1, I) | |
406 | #define HI_UD(I) SUB_REG_UD(&HI, &HI1, I) | |
407 | ||
408 | /* end-sanitize-r5900 */ | |
409 | ||
0c2c5f61 AC |
410 | |
411 | ||
2acd126a AC |
412 | /* The following is probably not used for MIPS IV onwards: */ |
413 | /* Slots for delayed register updates. For the moment we just have a | |
414 | fixed number of slots (rather than a more generic, dynamic | |
415 | system). This keeps the simulator fast. However, we only allow | |
416 | for the register update to be delayed for a single instruction | |
417 | cycle. */ | |
418 | #define PSLOTS (8) /* Maximum number of instruction cycles */ | |
419 | ||
420 | typedef struct _pending_write_queue { | |
421 | int in; | |
422 | int out; | |
423 | int total; | |
424 | int slot_delay[PSLOTS]; | |
425 | int slot_size[PSLOTS]; | |
426 | int slot_bit[PSLOTS]; | |
427 | void *slot_dest[PSLOTS]; | |
428 | unsigned64 slot_value[PSLOTS]; | |
429 | } pending_write_queue; | |
430 | ||
431 | #ifndef PENDING_TRACE | |
432 | #define PENDING_TRACE 0 | |
433 | #endif | |
434 | #define PENDING_IN ((CPU)->pending.in) | |
435 | #define PENDING_OUT ((CPU)->pending.out) | |
436 | #define PENDING_TOTAL ((CPU)->pending.total) | |
437 | #define PENDING_SLOT_SIZE ((CPU)->pending.slot_size) | |
438 | #define PENDING_SLOT_BIT ((CPU)->pending.slot_size) | |
439 | #define PENDING_SLOT_DELAY ((CPU)->pending.slot_delay) | |
440 | #define PENDING_SLOT_DEST ((CPU)->pending.slot_dest) | |
441 | #define PENDING_SLOT_VALUE ((CPU)->pending.slot_value) | |
442 | ||
443 | /* Invalidate the pending write queue, all pending writes are | |
444 | discarded. */ | |
445 | ||
446 | #define PENDING_INVALIDATE() \ | |
447 | memset (&(CPU)->pending, 0, sizeof ((CPU)->pending)) | |
448 | ||
449 | /* Schedule a write to DEST for N cycles time. For 64 bit | |
450 | destinations, schedule two writes. For floating point registers, | |
451 | the caller should schedule a write to both the dest register and | |
452 | the FPR_STATE register. When BIT is non-negative, only BIT of DEST | |
453 | is updated. */ | |
454 | ||
455 | #define PENDING_SCHED(DEST,VAL,DELAY,BIT) \ | |
456 | do { \ | |
457 | if (PENDING_SLOT_DEST[PENDING_IN] != NULL) \ | |
458 | sim_engine_abort (SD, CPU, cia, \ | |
459 | "PENDING_SCHED - buffer overflow\n"); \ | |
460 | if (PENDING_TRACE) \ | |
461 | sim_io_printf (SD, "PENDING_SCHED - dest 0x%lx, val 0x%lx, pending_in %d, pending_out %d, pending_total %d\n", (unsigned long) (DEST), (unsigned long) (VAL), PENDING_IN, PENDING_OUT, PENDING_TOTAL); \ | |
462 | PENDING_SLOT_DELAY[PENDING_IN] = (DELAY) + 1; \ | |
463 | PENDING_SLOT_DEST[PENDING_IN] = &(DEST); \ | |
464 | PENDING_SLOT_VALUE[PENDING_IN] = (VAL); \ | |
465 | PENDING_SLOT_SIZE[PENDING_IN] = sizeof (DEST); \ | |
466 | PENDING_SLOT_BIT[PENDING_IN] = (BIT); \ | |
467 | } while (0) | |
468 | ||
469 | #define PENDING_WRITE(DEST,VAL,DELAY) PENDING_SCHED(DEST,VAL,DELAY,-1) | |
470 | #define PENDING_BIT(DEST,VAL,DELAY,BIT) PENDING_SCHED(DEST,VAL,DELAY,BIT) | |
471 | ||
472 | #define PENDING_TICK() pending_tick (SD, CPU, cia) | |
473 | ||
474 | #define PENDING_FLUSH() abort () /* think about this one */ | |
475 | #define PENDING_FP() abort () /* think about this one */ | |
476 | ||
477 | /* For backward compatibility */ | |
478 | #define PENDING_FILL(R,VAL) \ | |
479 | { \ | |
480 | if ((R) >= FGRIDX && (R) < FGRIDX + NR_FGR) \ | |
481 | PENDING_SCHED(FGR[(R) - FGRIDX], VAL, 2, -1); \ | |
482 | else \ | |
483 | PENDING_SCHED(GPR[(R)], VAL, 2, -1); \ | |
484 | } | |
485 | ||
486 | ||
0c2c5f61 | 487 | |
18c64df6 | 488 | struct _sim_cpu { |
0c2c5f61 AC |
489 | |
490 | ||
491 | /* The following are internal simulator state variables: */ | |
9ec6741b AC |
492 | #define CIA_GET(CPU) ((CPU)->registers[PCIDX] + 0) |
493 | #define CIA_SET(CPU,CIA) ((CPU)->registers[PCIDX] = (CIA)) | |
0c2c5f61 | 494 | address_word dspc; /* delay-slot PC */ |
01737f42 | 495 | #define DSPC ((CPU)->dspc) |
0c2c5f61 | 496 | |
f3bdd368 | 497 | #if !WITH_IGEN |
dad6f1f3 AC |
498 | /* Issue a delay slot instruction immediatly by re-calling |
499 | idecode_issue */ | |
500 | #define DELAY_SLOT(TARGET) \ | |
501 | do { \ | |
502 | address_word target = (TARGET); \ | |
503 | instruction_word delay_insn; \ | |
01737f42 | 504 | sim_events_slip (SD, 1); \ |
a48e8c8d | 505 | CIA = CIA + 4; /* NOTE not mips16 */ \ |
dad6f1f3 | 506 | STATE |= simDELAYSLOT; \ |
a48e8c8d | 507 | delay_insn = IMEM32 (CIA); /* NOTE not mips16 */ \ |
01737f42 | 508 | idecode_issue (CPU_, delay_insn, (CIA)); \ |
7ce8b917 AC |
509 | STATE &= ~simDELAYSLOT; \ |
510 | NIA = target; \ | |
dad6f1f3 AC |
511 | } while (0) |
512 | #define NULLIFY_NEXT_INSTRUCTION() \ | |
513 | do { \ | |
01737f42 AC |
514 | sim_events_slip (SD, 1); \ |
515 | dotrace (SD, CPU, tracefh, 2, NIA, 4, "load instruction"); \ | |
7ce8b917 | 516 | NIA = CIA + 8; \ |
dad6f1f3 | 517 | } while (0) |
f3bdd368 AC |
518 | #else |
519 | #define DELAY_SLOT(TARGET) NIA = delayslot32 (SD_, (TARGET)) | |
520 | #define NULLIFY_NEXT_INSTRUCTION() NIA = nullify_next_insn32 (SD_) | |
521 | #endif | |
522 | ||
ea985d24 | 523 | |
0c2c5f61 AC |
524 | /* State of the simulator */ |
525 | unsigned int state; | |
526 | unsigned int dsstate; | |
01737f42 AC |
527 | #define STATE ((CPU)->state) |
528 | #define DSSTATE ((CPU)->dsstate) | |
0c2c5f61 | 529 | |
ea985d24 AC |
530 | /* Flags in the "state" variable: */ |
531 | #define simHALTEX (1 << 2) /* 0 = run; 1 = halt on exception */ | |
532 | #define simHALTIN (1 << 3) /* 0 = run; 1 = halt on interrupt */ | |
533 | #define simTRACE (1 << 8) /* 0 = do nothing; 1 = trace address activity */ | |
ea985d24 AC |
534 | #define simPCOC0 (1 << 17) /* COC[1] from current */ |
535 | #define simPCOC1 (1 << 18) /* COC[1] from previous */ | |
536 | #define simDELAYSLOT (1 << 24) /* 0 = do nothing; 1 = delay slot entry exists */ | |
537 | #define simSKIPNEXT (1 << 25) /* 0 = do nothing; 1 = skip instruction */ | |
538 | #define simSIGINT (1 << 28) /* 0 = do nothing; 1 = SIGINT has occured */ | |
539 | #define simJALDELAYSLOT (1 << 29) /* 1 = in jal delay slot */ | |
540 | ||
a09a30d2 AC |
541 | #define ENGINE_ISSUE_PREFIX_HOOK() \ |
542 | { \ | |
2acd126a AC |
543 | /* Perform any pending writes */ \ |
544 | PENDING_TICK(); \ | |
a09a30d2 AC |
545 | /* Set previous flag, depending on current: */ \ |
546 | if (STATE & simPCOC0) \ | |
547 | STATE |= simPCOC1; \ | |
548 | else \ | |
549 | STATE &= ~simPCOC1; \ | |
550 | /* and update the current value: */ \ | |
551 | if (GETFCC(0)) \ | |
552 | STATE |= simPCOC0; \ | |
553 | else \ | |
554 | STATE &= ~simPCOC0; \ | |
555 | } | |
ea985d24 | 556 | |
0c2c5f61 AC |
557 | |
558 | /* This is nasty, since we have to rely on matching the register | |
559 | numbers used by GDB. Unfortunately, depending on the MIPS target | |
560 | GDB uses different register numbers. We cannot just include the | |
561 | relevant "gdb/tm.h" link, since GDB may not be configured before | |
562 | the sim world, and also the GDB header file requires too much other | |
563 | state. */ | |
564 | ||
565 | #ifndef TM_MIPS_H | |
566 | #define LAST_EMBED_REGNUM (89) | |
567 | #define NUM_REGS (LAST_EMBED_REGNUM + 1) | |
568 | /* start-sanitize-r5900 */ | |
569 | #undef NUM_REGS | |
570 | #define NUM_REGS (128) | |
571 | /* end-sanitize-r5900 */ | |
572 | #endif | |
573 | ||
a48e8c8d AC |
574 | /* start-sanitize-sky */ |
575 | #ifdef TARGET_SKY | |
576 | #ifndef TM_TXVU_H | |
a48e8c8d | 577 | /* Number of machine registers */ |
9ade226a FCE |
578 | #define NUM_VU_REGS 160 |
579 | ||
2151467d | 580 | #define NUM_VU_INTEGER_REGS 16 |
9ade226a | 581 | #define FIRST_VEC_REG 32 |
a48e8c8d | 582 | |
2905d173 | 583 | #define NUM_VIF_REGS 26 |
64ed8b6a | 584 | |
b8140a08 | 585 | #define NUM_CORE_REGS 128 |
a48e8c8d AC |
586 | |
587 | #undef NUM_REGS | |
b8140a08 | 588 | #define NUM_REGS (NUM_CORE_REGS + 2*(NUM_VU_REGS) + 2*(NUM_VIF_REGS)) |
a48e8c8d | 589 | #endif /* no tm-txvu.h */ |
3fa454e9 FCE |
590 | #endif /* TARGET_SKY */ |
591 | /* end-sanitize-sky */ | |
8c8dd0c4 JL |
592 | |
593 | enum float_operation | |
594 | /* start-sanitize-sky */ | |
595 | /* NOTE: THE VALUES of THESE CONSTANTS MUST BE IN SYNC WITH THOSE IN WF.H */ | |
a48e8c8d | 596 | /* end-sanitize-sky */ |
8c8dd0c4 JL |
597 | { |
598 | FLOP_ADD, FLOP_SUB, FLOP_MUL, FLOP_MADD, | |
599 | FLOP_MSUB, FLOP_MAX=10, FLOP_MIN, FLOP_ABS, | |
600 | FLOP_ITOF0=14, FLOP_FTOI0=18, FLOP_NEG=23 | |
601 | }; | |
a48e8c8d | 602 | |
0c2c5f61 AC |
603 | /* To keep this default simulator simple, and fast, we use a direct |
604 | vector of registers. The internal simulator engine then uses | |
605 | manifests to access the correct slot. */ | |
606 | ||
fb5a2a3e | 607 | unsigned_word registers[LAST_EMBED_REGNUM + 1]; |
0c2c5f61 | 608 | int register_widths[NUM_REGS]; |
01737f42 | 609 | #define REGISTERS ((CPU)->registers) |
0c2c5f61 AC |
610 | |
611 | #define GPR (®ISTERS[0]) | |
2d44e12a | 612 | #define GPR_SET(N,VAL) (REGISTERS[(N)] = (VAL)) |
a48e8c8d AC |
613 | |
614 | /* While space is allocated for the floating point registers in the | |
615 | main registers array, they are stored separatly. This is because | |
616 | their size may not necessarily match the size of either the | |
617 | general-purpose or system specific registers */ | |
2acd126a | 618 | #define NR_FGR (32) |
0c2c5f61 | 619 | #define FGRIDX (38) |
a48e8c8d AC |
620 | fp_word fgr[NR_FGR]; |
621 | #define FGR ((CPU)->fgr) | |
622 | ||
0c2c5f61 AC |
623 | #define LO (REGISTERS[33]) |
624 | #define HI (REGISTERS[34]) | |
9ec6741b AC |
625 | #define PCIDX 37 |
626 | #define PC (REGISTERS[PCIDX]) | |
0c2c5f61 AC |
627 | #define CAUSE (REGISTERS[36]) |
628 | #define SRIDX (32) | |
629 | #define SR (REGISTERS[SRIDX]) /* CPU status register */ | |
630 | #define FCR0IDX (71) | |
631 | #define FCR0 (REGISTERS[FCR0IDX]) /* really a 32bit register */ | |
632 | #define FCR31IDX (70) | |
633 | #define FCR31 (REGISTERS[FCR31IDX]) /* really a 32bit register */ | |
634 | #define FCSR (FCR31) | |
635 | #define Debug (REGISTERS[86]) | |
636 | #define DEPC (REGISTERS[87]) | |
637 | #define EPC (REGISTERS[88]) | |
638 | #define COCIDX (LAST_EMBED_REGNUM + 2) /* special case : outside the normal range */ | |
639 | ||
a09a30d2 | 640 | unsigned_word c0_config_reg; |
01737f42 | 641 | #define C0_CONFIG ((CPU)->c0_config_reg) |
a09a30d2 | 642 | |
0c2c5f61 AC |
643 | /* The following are pseudonyms for standard registers */ |
644 | #define ZERO (REGISTERS[0]) | |
645 | #define V0 (REGISTERS[2]) | |
646 | #define A0 (REGISTERS[4]) | |
647 | #define A1 (REGISTERS[5]) | |
648 | #define A2 (REGISTERS[6]) | |
649 | #define A3 (REGISTERS[7]) | |
c0a4c3ba AC |
650 | #define T8IDX 24 |
651 | #define T8 (REGISTERS[T8IDX]) | |
652 | #define SPIDX 29 | |
653 | #define SP (REGISTERS[SPIDX]) | |
654 | #define RAIDX 31 | |
655 | #define RA (REGISTERS[RAIDX]) | |
0c2c5f61 | 656 | |
46eb9e5a GRK |
657 | /* While space is allocated in the main registers arrray for some of |
658 | the COP0 registers, that space isn't sufficient. Unknown COP0 | |
659 | registers overflow into the array below */ | |
660 | ||
661 | #define NR_COP0_GPR 32 | |
662 | unsigned_word cop0_gpr[NR_COP0_GPR]; | |
663 | #define COP0_GPR ((CPU)->cop0_gpr) | |
664 | /* start-sanitize-r5900 */ | |
665 | #define NR_COP0_BP 8 | |
666 | unsigned_word cop0_bp[NR_COP0_BP]; | |
667 | #define COP0_BP ((CPU)->cop0_bp) | |
668 | #define NR_COP0_P 64 | |
669 | unsigned_word cop0_p[NR_COP0_P]; | |
670 | #define COP0_P ((CPU)->cop0_p) | |
671 | /* end-sanitize-r5900 */ | |
672 | ||
673 | ||
0c2c5f61 AC |
674 | /* Keep the current format state for each register: */ |
675 | FP_formats fpr_state[32]; | |
01737f42 | 676 | #define FPR_STATE ((CPU)->fpr_state) |
0c2c5f61 | 677 | |
2acd126a | 678 | pending_write_queue pending; |
0c2c5f61 AC |
679 | |
680 | /* LLBIT = Load-Linked bit. A bit of "virtual" state used by atomic | |
681 | read-write instructions. It is set when a linked load occurs. It | |
682 | is tested and cleared by the conditional store. It is cleared | |
683 | (during other CPU operations) when a store to the location would | |
684 | no longer be atomic. In particular, it is cleared by exception | |
685 | return instructions. */ | |
686 | int llbit; | |
01737f42 | 687 | #define LLBIT ((CPU)->llbit) |
0c2c5f61 AC |
688 | |
689 | ||
421cbaae AC |
690 | /* The HIHISTORY and LOHISTORY timestamps are used to ensure that |
691 | corruptions caused by using the HI or LO register too close to a | |
692 | following operation is spotted. See mips.igen for more details. */ | |
693 | ||
694 | hilo_history hi_history; | |
695 | #define HIHISTORY (&(CPU)->hi_history) | |
696 | hilo_history lo_history; | |
697 | #define LOHISTORY (&(CPU)->lo_history) | |
0c2c5f61 | 698 | |
46eb9e5a GRK |
699 | /* start-sanitize-branchbug4011 */ |
700 | #if 1 | |
701 | int branchbug4011_option; | |
702 | #define BRANCHBUG4011_OPTION ((CPU)->branchbug4011_option) | |
703 | address_word branchbug4011_last_target; | |
704 | #define BRANCHBUG4011_LAST_TARGET ((CPU)->branchbug4011_last_target) | |
705 | address_word branchbug4011_last_cia; | |
706 | #define BRANCHBUG4011_LAST_CIA ((CPU)->branchbug4011_last_cia) | |
707 | ||
708 | #define check_branch_bug() (check_4011_branch_bug (_SD)) | |
709 | #define mark_branch_bug(TARGET) (mark_4011_branch_bug (_SD,TARGET)) | |
710 | #else | |
711 | /* end-sanitize-branchbug4011 */ | |
712 | #define check_branch_bug() | |
713 | #define mark_branch_bug(TARGET) | |
714 | /* start-sanitize-branchbug4011 */ | |
715 | #endif | |
716 | /* end-sanitize-branchbug4011 */ | |
0c2c5f61 | 717 | /* start-sanitize-r5900 */ |
a48e8c8d | 718 | sim_r5900_cpu r5900; |
0c2c5f61 AC |
719 | |
720 | /* end-sanitize-r5900 */ | |
9ade226a | 721 | /* start-sanitize-cygnus */ |
01b9cd49 | 722 | |
2d44e12a AC |
723 | /* The MDMX ISA has a very very large accumulator */ |
724 | unsigned8 acc[3 * 8]; | |
9ade226a | 725 | /* end-sanitize-cygnus */ |
3fa454e9 | 726 | /* start-sanitize-sky */ |
0c2c5f61 | 727 | |
3fa454e9 FCE |
728 | #ifdef TARGET_SKY |
729 | /* Device on which instruction issue last occured. */ | |
730 | char cur_device; | |
731 | #endif | |
732 | /* end-sanitize-sky */ | |
18c64df6 AC |
733 | sim_cpu_base base; |
734 | }; | |
735 | ||
736 | ||
737 | /* MIPS specific simulator watch config */ | |
738 | ||
739 | void watch_options_install PARAMS ((SIM_DESC sd)); | |
740 | ||
741 | struct swatch { | |
742 | sim_event *pc; | |
743 | sim_event *clock; | |
744 | sim_event *cycles; | |
745 | }; | |
746 | ||
747 | ||
748 | /* FIXME: At present much of the simulator is still static */ | |
749 | struct sim_state { | |
750 | ||
751 | struct swatch watch; | |
752 | ||
01737f42 | 753 | sim_cpu cpu[MAX_NR_PROCESSORS]; |
18c64df6 AC |
754 | #if (WITH_SMP) |
755 | #define STATE_CPU(sd,n) (&(sd)->cpu[n]) | |
756 | #else | |
757 | #define STATE_CPU(sd,n) (&(sd)->cpu[0]) | |
758 | #endif | |
759 | ||
60372a3f JL |
760 | /* start-sanitize-sky */ |
761 | #ifdef TARGET_SKY | |
762 | #ifdef SKY_FUNIT | |
763 | /* Record of option for floating point implementation type. */ | |
764 | int fp_type_opt; | |
765 | #define STATE_FP_TYPE_OPT(sd) ((sd)->fp_type_opt) | |
3fa454e9 | 766 | #define STATE_FP_TYPE_OPT_ACCURATE 0x80000000 |
60372a3f JL |
767 | #endif |
768 | #endif | |
769 | /* end-sanitize-sky */ | |
770 | ||
18c64df6 AC |
771 | sim_state_base base; |
772 | }; | |
773 | ||
774 | ||
ea985d24 AC |
775 | |
776 | /* Status information: */ | |
777 | ||
778 | /* TODO : these should be the bitmasks for these bits within the | |
779 | status register. At the moment the following are VR4300 | |
780 | bit-positions: */ | |
781 | #define status_KSU_mask (0x3) /* mask for KSU bits */ | |
782 | #define status_KSU_shift (3) /* shift for field */ | |
783 | #define ksu_kernel (0x0) | |
784 | #define ksu_supervisor (0x1) | |
785 | #define ksu_user (0x2) | |
786 | #define ksu_unknown (0x3) | |
787 | ||
788 | #define status_IE (1 << 0) /* Interrupt enable */ | |
46eb9e5a | 789 | #define status_EIE (1 << 16) /* Enable Interrupt Enable */ |
ea985d24 AC |
790 | #define status_EXL (1 << 1) /* Exception level */ |
791 | #define status_RE (1 << 25) /* Reverse Endian in user mode */ | |
792 | #define status_FR (1 << 26) /* enables MIPS III additional FP registers */ | |
793 | #define status_SR (1 << 20) /* soft reset or NMI */ | |
794 | #define status_BEV (1 << 22) /* Location of general exception vectors */ | |
795 | #define status_TS (1 << 21) /* TLB shutdown has occurred */ | |
796 | #define status_ERL (1 << 2) /* Error level */ | |
797 | #define status_RP (1 << 27) /* Reduced Power mode */ | |
5fe24ce0 | 798 | /* start-sanitize-r5900 */ |
15232df4 FCE |
799 | #define status_CU0 (1 << 28) /* COP0 usable */ |
800 | #define status_CU1 (1 << 29) /* COP1 usable */ | |
801 | #define status_CU2 (1 << 30) /* COP2 usable */ | |
5fe24ce0 | 802 | /* end-sanitize-r5900 */ |
ea985d24 | 803 | |
3fa454e9 FCE |
804 | /* Specializations for TX39 family */ |
805 | #define status_IEc (1 << 0) /* Interrupt enable (current) */ | |
806 | #define status_KUc (1 << 1) /* Kernel/User mode */ | |
807 | #define status_IEp (1 << 2) /* Interrupt enable (previous) */ | |
808 | #define status_KUp (1 << 3) /* Kernel/User mode */ | |
809 | #define status_IEo (1 << 4) /* Interrupt enable (old) */ | |
810 | #define status_KUo (1 << 5) /* Kernel/User mode */ | |
811 | #define status_IM_mask (0xff) /* Interrupt mask */ | |
812 | #define status_IM_shift (8) | |
813 | #define status_NMI (1 << 20) /* NMI */ | |
814 | #define status_NMI (1 << 20) /* NMI */ | |
815 | ||
816 | #define cause_EXC_mask (0x1f) /* Exception code */ | |
817 | #define cause_EXC_shift (2) | |
818 | #define cause_SW0 (1 << 8) /* Software interrupt 0 */ | |
819 | #define cause_SW1 (1 << 9) /* Software interrupt 1 */ | |
820 | #define cause_IP_mask (0x3f) /* Interrupt pending field */ | |
821 | #define cause_IP_shift (10) | |
822 | #define cause_CE_mask (0x3) /* Coprocessor error */ | |
823 | #define cause_CE_shift (28) | |
824 | ||
825 | #define cause_BD ((unsigned)1 << 31) /* Exception in branch delay slot */ | |
826 | ||
ea985d24 AC |
827 | |
828 | /* NOTE: We keep the following status flags as bit values (1 for true, | |
829 | 0 for false). This allows them to be used in binary boolean | |
830 | operations without worrying about what exactly the non-zero true | |
831 | value is. */ | |
832 | ||
833 | /* UserMode */ | |
3fa454e9 FCE |
834 | #ifdef SUBTARGET_R3900 |
835 | #define UserMode ((SR & status_KUc) ? 1 : 0) | |
836 | #else | |
ea985d24 | 837 | #define UserMode ((((SR & status_KSU_mask) >> status_KSU_shift) == ksu_user) ? 1 : 0) |
3fa454e9 | 838 | #endif /* SUBTARGET_R3900 */ |
ea985d24 AC |
839 | |
840 | /* BigEndianMem */ | |
841 | /* Hardware configuration. Affects endianness of LoadMemory and | |
842 | StoreMemory and the endianness of Kernel and Supervisor mode | |
843 | execution. The value is 0 for little-endian; 1 for big-endian. */ | |
844 | #define BigEndianMem (CURRENT_TARGET_BYTE_ORDER == BIG_ENDIAN) | |
845 | /*(state & simBE) ? 1 : 0)*/ | |
846 | ||
ea985d24 AC |
847 | /* ReverseEndian */ |
848 | /* This mode is selected if in User mode with the RE bit being set in | |
849 | SR (Status Register). It reverses the endianness of load and store | |
850 | instructions. */ | |
851 | #define ReverseEndian (((SR & status_RE) && UserMode) ? 1 : 0) | |
852 | ||
853 | /* BigEndianCPU */ | |
854 | /* The endianness for load and store instructions (0=little;1=big). In | |
855 | User mode this endianness may be switched by setting the state_RE | |
856 | bit in the SR register. Thus, BigEndianCPU may be computed as | |
857 | (BigEndianMem EOR ReverseEndian). */ | |
858 | #define BigEndianCPU (BigEndianMem ^ ReverseEndian) /* Already bits */ | |
859 | ||
860 | ||
861 | ||
18c64df6 AC |
862 | /* Exceptions: */ |
863 | ||
864 | /* NOTE: These numbers depend on the processor architecture being | |
865 | simulated: */ | |
866 | #define Interrupt (0) | |
867 | #define TLBModification (1) | |
868 | #define TLBLoad (2) | |
869 | #define TLBStore (3) | |
870 | #define AddressLoad (4) | |
871 | #define AddressStore (5) | |
872 | #define InstructionFetch (6) | |
873 | #define DataReference (7) | |
874 | #define SystemCall (8) | |
875 | #define BreakPoint (9) | |
876 | #define ReservedInstruction (10) | |
877 | #define CoProcessorUnusable (11) | |
878 | #define IntegerOverflow (12) /* Arithmetic overflow (IDT monitor raises SIGFPE) */ | |
879 | #define Trap (13) | |
880 | #define FPE (15) | |
881 | #define DebugBreakPoint (16) | |
882 | #define Watch (23) | |
3fa454e9 FCE |
883 | #define NMIReset (31) |
884 | ||
18c64df6 AC |
885 | |
886 | /* The following exception code is actually private to the simulator | |
887 | world. It is *NOT* a processor feature, and is used to signal | |
888 | run-time errors in the simulator. */ | |
889 | #define SimulatorFault (0xFFFFFFFF) | |
890 | ||
895a7dc2 IC |
891 | /* The following break instructions are reserved for use by the |
892 | simulator. The first is used to halt the simulation. The second | |
893 | is used by gdb for break-points. NOTE: Care must be taken, since | |
894 | this value may be used in later revisions of the MIPS ISA. */ | |
895 | #define HALT_INSTRUCTION_MASK (0x03FFFFC0) | |
896 | ||
897 | #define HALT_INSTRUCTION (0x03ff000d) | |
898 | #define HALT_INSTRUCTION2 (0x0000ffcd) | |
899 | ||
900 | /* start-sanitize-sky */ | |
901 | #define HALT_INSTRUCTION_PASS (0x03fffc0d) | |
902 | #define HALT_INSTRUCTION_FAIL (0x03ffffcd) | |
903 | /* end-sanitize-sky */ | |
904 | ||
905 | #define BREAKPOINT_INSTRUCTION (0x0005000d) | |
906 | #define BREAKPOINT_INSTRUCTION2 (0x0000014d) | |
907 | ||
908 | ||
46eb9e5a GRK |
909 | void interrupt_event (SIM_DESC sd, void *data); |
910 | ||
01737f42 AC |
911 | void signal_exception (SIM_DESC sd, sim_cpu *cpu, address_word cia, int exception, ...); |
912 | #define SignalException(exc,instruction) signal_exception (SD, CPU, cia, (exc), (instruction)) | |
3fa454e9 | 913 | #define SignalExceptionInterrupt() signal_exception (SD, CPU, cia, Interrupt) |
01737f42 AC |
914 | #define SignalExceptionInstructionFetch() signal_exception (SD, CPU, cia, InstructionFetch) |
915 | #define SignalExceptionAddressStore() signal_exception (SD, CPU, cia, AddressStore) | |
916 | #define SignalExceptionAddressLoad() signal_exception (SD, CPU, cia, AddressLoad) | |
917 | #define SignalExceptionSimulatorFault(buf) signal_exception (SD, CPU, cia, SimulatorFault, buf) | |
918 | #define SignalExceptionFPE() signal_exception (SD, CPU, cia, FPE) | |
919 | #define SignalExceptionIntegerOverflow() signal_exception (SD, CPU, cia, IntegerOverflow) | |
920 | #define SignalExceptionCoProcessorUnusable() signal_exception (SD, CPU, cia, CoProcessorUnusable) | |
3fa454e9 | 921 | #define SignalExceptionNMIReset() signal_exception (SD, CPU, cia, NMIReset) |
18c64df6 | 922 | |
18c64df6 AC |
923 | /* Co-processor accesses */ |
924 | ||
01737f42 AC |
925 | void cop_lw PARAMS ((SIM_DESC sd, sim_cpu *cpu, address_word cia, int coproc_num, int coproc_reg, unsigned int memword)); |
926 | void cop_ld PARAMS ((SIM_DESC sd, sim_cpu *cpu, address_word cia, int coproc_num, int coproc_reg, uword64 memword)); | |
927 | unsigned int cop_sw PARAMS ((SIM_DESC sd, sim_cpu *cpu, address_word cia, int coproc_num, int coproc_reg)); | |
928 | uword64 cop_sd PARAMS ((SIM_DESC sd, sim_cpu *cpu, address_word cia, int coproc_num, int coproc_reg)); | |
18c64df6 | 929 | |
01737f42 AC |
930 | #define COP_LW(coproc_num,coproc_reg,memword) \ |
931 | cop_lw (SD, CPU, cia, coproc_num, coproc_reg, memword) | |
932 | #define COP_LD(coproc_num,coproc_reg,memword) \ | |
933 | cop_ld (SD, CPU, cia, coproc_num, coproc_reg, memword) | |
934 | #define COP_SW(coproc_num,coproc_reg) \ | |
935 | cop_sw (SD, CPU, cia, coproc_num, coproc_reg) | |
936 | #define COP_SD(coproc_num,coproc_reg) \ | |
937 | cop_sd (SD, CPU, cia, coproc_num, coproc_reg) | |
6ed00b06 FCE |
938 | |
939 | /* start-sanitize-sky */ | |
ebcfd86a FCE |
940 | #ifdef TARGET_SKY |
941 | void cop_lq PARAMS ((SIM_DESC sd, sim_cpu *cpu, address_word cia, | |
942 | int coproc_num, int coproc_reg, unsigned128 memword)); | |
943 | unsigned128 cop_sq PARAMS ((SIM_DESC sd, sim_cpu *cpu, address_word cia, | |
944 | int coproc_num, int coproc_reg)); | |
6ed00b06 FCE |
945 | #define COP_LQ(coproc_num,coproc_reg,memword) \ |
946 | cop_lq (SD, CPU, cia, coproc_num, coproc_reg, memword) | |
15232df4 FCE |
947 | #define COP_SQ(coproc_num,coproc_reg) \ |
948 | cop_sq (SD, CPU, cia, coproc_num, coproc_reg) | |
ebcfd86a | 949 | #endif /* TARGET_SKY */ |
6ed00b06 | 950 | /* end-sanitize-sky */ |
18c64df6 | 951 | |
01737f42 AC |
952 | void decode_coproc PARAMS ((SIM_DESC sd, sim_cpu *cpu, address_word cia, unsigned int instruction)); |
953 | #define DecodeCoproc(instruction) \ | |
954 | decode_coproc (SD, CPU, cia, (instruction)) | |
ea985d24 | 955 | |
18c64df6 AC |
956 | |
957 | ||
958 | /* Memory accesses */ | |
959 | ||
ea985d24 AC |
960 | /* The following are generic to all versions of the MIPS architecture |
961 | to date: */ | |
962 | ||
963 | /* Memory Access Types (for CCA): */ | |
964 | #define Uncached (0) | |
965 | #define CachedNoncoherent (1) | |
966 | #define CachedCoherent (2) | |
967 | #define Cached (3) | |
968 | ||
969 | #define isINSTRUCTION (1 == 0) /* FALSE */ | |
970 | #define isDATA (1 == 1) /* TRUE */ | |
971 | #define isLOAD (1 == 0) /* FALSE */ | |
972 | #define isSTORE (1 == 1) /* TRUE */ | |
973 | #define isREAL (1 == 0) /* FALSE */ | |
974 | #define isRAW (1 == 1) /* TRUE */ | |
525d929e | 975 | /* The parameter HOST (isTARGET / isHOST) is ignored */ |
ea985d24 | 976 | #define isTARGET (1 == 0) /* FALSE */ |
525d929e | 977 | /* #define isHOST (1 == 1) TRUE */ |
ea985d24 AC |
978 | |
979 | /* The "AccessLength" specifications for Loads and Stores. NOTE: This | |
980 | is the number of bytes minus 1. */ | |
981 | #define AccessLength_BYTE (0) | |
982 | #define AccessLength_HALFWORD (1) | |
983 | #define AccessLength_TRIPLEBYTE (2) | |
984 | #define AccessLength_WORD (3) | |
985 | #define AccessLength_QUINTIBYTE (4) | |
986 | #define AccessLength_SEXTIBYTE (5) | |
987 | #define AccessLength_SEPTIBYTE (6) | |
988 | #define AccessLength_DOUBLEWORD (7) | |
989 | #define AccessLength_QUADWORD (15) | |
990 | ||
69d5a566 AC |
991 | #if (WITH_IGEN) |
992 | #define LOADDRMASK (WITH_TARGET_WORD_BITSIZE == 64 \ | |
993 | ? AccessLength_DOUBLEWORD /*7*/ \ | |
994 | : AccessLength_WORD /*3*/) | |
995 | #define PSIZE (WITH_TARGET_ADDRESS_BITSIZE) | |
996 | #endif | |
997 | ||
2ebb2a68 | 998 | |
64ed8b6a | 999 | INLINE_SIM_MAIN (int) address_translation PARAMS ((SIM_DESC sd, sim_cpu *, address_word cia, address_word vAddr, int IorD, int LorS, address_word *pAddr, int *CCA, int raw)); |
18c64df6 | 1000 | #define AddressTranslation(vAddr,IorD,LorS,pAddr,CCA,host,raw) \ |
01737f42 | 1001 | address_translation (SD, CPU, cia, vAddr, IorD, LorS, pAddr, CCA, raw) |
18c64df6 | 1002 | |
64ed8b6a | 1003 | INLINE_SIM_MAIN (void) load_memory PARAMS ((SIM_DESC sd, sim_cpu *cpu, address_word cia, uword64* memvalp, uword64* memval1p, int CCA, unsigned int AccessLength, address_word pAddr, address_word vAddr, int IorD)); |
18c64df6 | 1004 | #define LoadMemory(memvalp,memval1p,CCA,AccessLength,pAddr,vAddr,IorD,raw) \ |
01737f42 | 1005 | load_memory (SD, CPU, cia, memvalp, memval1p, CCA, AccessLength, pAddr, vAddr, IorD) |
18c64df6 | 1006 | |
64ed8b6a | 1007 | INLINE_SIM_MAIN (void) store_memory PARAMS ((SIM_DESC sd, sim_cpu *cpu, address_word cia, int CCA, unsigned int AccessLength, uword64 MemElem, uword64 MemElem1, address_word pAddr, address_word vAddr)); |
18c64df6 | 1008 | #define StoreMemory(CCA,AccessLength,MemElem,MemElem1,pAddr,vAddr,raw) \ |
01737f42 | 1009 | store_memory (SD, CPU, cia, CCA, AccessLength, MemElem, MemElem1, pAddr, vAddr) |
18c64df6 | 1010 | |
64ed8b6a | 1011 | INLINE_SIM_MAIN (void) cache_op PARAMS ((SIM_DESC sd, sim_cpu *cpu, address_word cia, int op, address_word pAddr, address_word vAddr, unsigned int instruction)); |
01737f42 AC |
1012 | #define CacheOp(op,pAddr,vAddr,instruction) \ |
1013 | cache_op (SD, CPU, cia, op, pAddr, vAddr, instruction) | |
18c64df6 | 1014 | |
64ed8b6a | 1015 | INLINE_SIM_MAIN (void) sync_operation PARAMS ((SIM_DESC sd, sim_cpu *cpu, address_word cia, int stype)); |
01737f42 AC |
1016 | #define SyncOperation(stype) \ |
1017 | sync_operation (SD, CPU, cia, (stype)) | |
ea985d24 | 1018 | |
64ed8b6a | 1019 | INLINE_SIM_MAIN (void) prefetch PARAMS ((SIM_DESC sd, sim_cpu *cpu, address_word cia, int CCA, address_word pAddr, address_word vAddr, int DATA, int hint)); |
01737f42 AC |
1020 | #define Prefetch(CCA,pAddr,vAddr,DATA,hint) \ |
1021 | prefetch (SD, CPU, cia, CCA, pAddr, vAddr, DATA, hint) | |
ea985d24 | 1022 | |
64ed8b6a | 1023 | INLINE_SIM_MAIN (unsigned32) ifetch32 PARAMS ((SIM_DESC sd, sim_cpu *cpu, address_word cia, address_word vaddr)); |
a48e8c8d | 1024 | #define IMEM32(CIA) ifetch32 (SD, CPU, (CIA), (CIA)) |
f3bdd368 | 1025 | INLINE_SIM_MAIN (unsigned16) ifetch16 PARAMS ((SIM_DESC sd, sim_cpu *cpu, address_word cia, address_word vaddr)); |
c0a4c3ba | 1026 | #define IMEM16(CIA) ifetch16 (SD, CPU, (CIA), ((CIA) & ~1)) |
a48e8c8d | 1027 | #define IMEM16_IMMED(CIA,NR) ifetch16 (SD, CPU, (CIA), ((CIA) & ~1) + 2 * (NR)) |
ea985d24 | 1028 | |
01737f42 | 1029 | void dotrace PARAMS ((SIM_DESC sd, sim_cpu *cpu, FILE *tracefh, int type, SIM_ADDR address, int width, char *comment, ...)); |
46eb9e5a | 1030 | extern FILE *tracefh; |
ea985d24 | 1031 | |
64ed8b6a AC |
1032 | INLINE_SIM_MAIN (void) pending_tick PARAMS ((SIM_DESC sd, sim_cpu *cpu, address_word cia)); |
1033 | ||
1034 | char* pr_addr PARAMS ((SIM_ADDR addr)); | |
1035 | char* pr_uword64 PARAMS ((uword64 addr)); | |
1036 | ||
3fa454e9 FCE |
1037 | /* start-sanitize-sky */ |
1038 | #ifdef TARGET_SKY | |
1039 | #ifdef SIM_ENGINE_HALT_HOOK | |
1040 | #undef SIM_ENGINE_HALT_HOOK | |
1041 | #endif | |
1042 | ||
1043 | void sky_sim_engine_halt PARAMS ((SIM_DESC sd, sim_cpu *last, sim_cia cia)); | |
b8140a08 | 1044 | #define SIM_ENGINE_HALT_HOOK(sd, last, cia) sky_sim_engine_halt(sd, last, cia) |
3fa454e9 | 1045 | |
2905d173 RU |
1046 | #ifdef SIM_ENGINE_RESTART_HOOK |
1047 | #undef SIM_ENGINE_RESTART_HOOK | |
1048 | #endif | |
1049 | ||
1050 | void sky_sim_engine_restart PARAMS ((SIM_DESC sd, sim_cpu *last, sim_cia cia)); | |
b8140a08 | 1051 | #define SIM_ENGINE_RESTART_HOOK(sd, L, pc) sky_sim_engine_restart(sd, L, pc) |
2905d173 | 1052 | |
b8140a08 RU |
1053 | /* for resume/suspend modules */ |
1054 | SIM_RC sky_sim_module_install PARAMS ((SIM_DESC sd)); | |
1055 | ||
1056 | #define MODULE_LIST sky_sim_module_install, | |
1057 | ||
3fa454e9 FCE |
1058 | #ifndef TM_TXVU_H /* In case GDB hasn't been configured yet */ |
1059 | enum txvu_cpu_context | |
1060 | { | |
f083fff3 RU |
1061 | TXVU_CPU_AUTO = -1, /* context-sensitive context */ |
1062 | TXVU_CPU_MASTER = 0, /* R5900 core */ | |
1063 | TXVU_CPU_VU0 = 1, /* Vector units */ | |
1064 | TXVU_CPU_VU1 = 2, | |
1065 | TXVU_CPU_VIF0 = 3, /* FIFO's */ | |
1066 | TXVU_CPU_VIF1 = 4, | |
1067 | TXVU_CPU_LAST /* Count of context types */ | |
3fa454e9 FCE |
1068 | }; |
1069 | ||
1070 | /* memory segment for communication with GDB */ | |
9ade226a FCE |
1071 | #define VIO_BASE 0xa0000000 |
1072 | #define GDB_COMM_AREA 0x19810000 /* Random choice */ | |
3fa454e9 FCE |
1073 | #define GDB_COMM_SIZE 0x4000 |
1074 | ||
1075 | /* Memory address containing last device to execute */ | |
1076 | #define LAST_DEVICE GDB_COMM_AREA | |
1077 | ||
2905d173 RU |
1078 | /* The FIFO breakpoint count and table */ |
1079 | #define FIFO_BPT_CNT (GDB_COMM_AREA + 4) | |
1080 | #define FIFO_BPT_TBL (GDB_COMM_AREA + 8) | |
1081 | ||
b8140a08 RU |
1082 | /* Each element of the breakpoint table is three four-byte integers. */ |
1083 | #define BPT_ELEM_SZ 4*3 | |
1084 | ||
2905d173 | 1085 | #define TXVU_VU_BRK_MASK 0x02 /* Breakpoint bit is #57 for VU insns */ |
b8140a08 | 1086 | #define TXVU_VIF_BRK_MASK 0x80 /* Use interrupt bit for VIF insns */ |
2905d173 | 1087 | |
3fa454e9 FCE |
1088 | #endif /* !TM_TXVU_H */ |
1089 | #endif /* TARGET_SKY */ | |
1090 | /* end-sanitize-sky */ | |
64ed8b6a AC |
1091 | |
1092 | #if H_REVEALS_MODULE_P (SIM_MAIN_INLINE) | |
1093 | #include "sim-main.c" | |
1094 | #endif | |
2acd126a | 1095 | |
18c64df6 | 1096 | #endif |