1 # Simulator main loop for m32r. -*- C -*-
3 # Copyright (C) 1996-2024 Free Software Foundation, Inc.
5 # This file is part of the GNU Simulators.
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 3 of the License, or
10 # (at your option) any later version.
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.
17 # You should have received a copy of the GNU General Public License
18 # along with this program. If not, see <http://www.gnu.org/licenses/>.
21 # /bin/sh mainloop.in command
27 # extract-{simple,scache,pbb}
28 # {full,fast}-exec-{simple,scache,pbb}
30 # A target need only provide a "full" version of one of simple,scache,pbb.
31 # If the target wants it can also provide a fast version of same, or if
32 # the slow (full featured) version is `simple', then the fast version can be
34 # A target can't provide more than this.
35 # However for illustration's sake this file provides examples of all.
37 # ??? After a few more ports are done, revisit.
38 # Will eventually need to machine generate a lot of this.
48 static INLINE const IDESC *
49 extract16 (SIM_CPU *current_cpu, PCADDR pc, CGEN_INSN_INT insn,
50 ARGBUF *abuf, int fast_p)
52 const IDESC *id = @cpu@_decode (current_cpu, pc, insn, insn, abuf);
54 @cpu@_fill_argbuf (current_cpu, abuf, id, pc, fast_p);
57 int trace_p = PC_IN_TRACE_RANGE_P (current_cpu, pc);
58 int profile_p = PC_IN_PROFILE_RANGE_P (current_cpu, pc);
59 @cpu@_fill_argbuf_tp (current_cpu, abuf, trace_p, profile_p);
64 static INLINE const IDESC *
65 extract32 (SIM_CPU *current_cpu, PCADDR pc, CGEN_INSN_INT insn,
66 ARGBUF *abuf, int fast_p)
68 const IDESC *id = @cpu@_decode (current_cpu, pc, (USI) insn >> 16, insn, abuf);
70 @cpu@_fill_argbuf (current_cpu, abuf, id, pc, fast_p);
73 int trace_p = PC_IN_TRACE_RANGE_P (current_cpu, pc);
74 int profile_p = PC_IN_PROFILE_RANGE_P (current_cpu, pc);
75 @cpu@_fill_argbuf_tp (current_cpu, abuf, trace_p, profile_p);
81 execute (SIM_CPU *current_cpu, SCACHE *sc, int fast_p)
87 #if ! WITH_SEM_SWITCH_FAST
89 vpc = (*sc->argbuf.semantic.sem_fast) (current_cpu, sc);
91 vpc = (*sc->argbuf.semantic.sem_fast) (current_cpu, &sc->argbuf);
95 #endif /* WITH_SEM_SWITCH_FAST */
99 #if ! WITH_SEM_SWITCH_FULL
100 ARGBUF *abuf = &sc->argbuf;
101 const IDESC *idesc = abuf->idesc;
102 const CGEN_INSN *idata = idesc->idata;
104 int virtual_p = CGEN_INSN_ATTR_VALUE (idata, CGEN_INSN_VIRTUAL);
111 /* FIXME: call x-before */
112 if (ARGBUF_PROFILE_P (abuf))
113 PROFILE_COUNT_INSN (current_cpu, abuf->addr, idesc->num);
114 /* FIXME: Later make cover macros: PROFILE_INSN_{INIT,FINI}. */
115 if (PROFILE_MODEL_P (current_cpu)
116 && ARGBUF_PROFILE_P (abuf))
117 @cpu@_model_insn_before (current_cpu, 1 /*first_p*/);
118 CGEN_TRACE_INSN_INIT (current_cpu, abuf, 1);
119 CGEN_TRACE_INSN (current_cpu, idata,
120 (const struct argbuf *) abuf, abuf->addr);
123 vpc = (*sc->argbuf.semantic.sem_full) (current_cpu, sc);
125 vpc = (*sc->argbuf.semantic.sem_full) (current_cpu, abuf);
129 /* FIXME: call x-after */
130 if (PROFILE_MODEL_P (current_cpu)
131 && ARGBUF_PROFILE_P (abuf))
135 cycles = (*idesc->timing->model_fn) (current_cpu, sc);
136 @cpu@_model_insn_after (current_cpu, 1 /*last_p*/, cycles);
138 CGEN_TRACE_INSN_FINI (current_cpu, abuf, 1);
142 #endif /* WITH_SEM_SWITCH_FULL */
158 xextract-simple | xextract-scache)
165 /* This only occurs when single stepping.
166 The test is unnecessary otherwise, but the cost is teensy,
167 compared with decoding/extraction. */
168 UHI insn = GETIMEMUHI (current_cpu, pc);
169 extract16 (current_cpu, pc, insn & 0x7fff, sc, FAST_P);
173 USI insn = GETIMEMUSI (current_cpu, pc);
176 extract32 (current_cpu, pc, insn, sc, FAST_P);
180 extract16 (current_cpu, pc, insn >> 16, sc, FAST_P);
181 extract16 (current_cpu, pc + 2, insn & 0x7fff, sc + 1, FAST_P);
182 /* The m32r doesn't support parallel execution. */
183 if ((insn & 0x8000) != 0
184 && (insn & 0x7fff) != 0x7000) /* parallel nops are ok */
185 sim_engine_illegal_insn (current_cpu, pc);
195 # Inputs: current_cpu, pc, sc, max_insns, FAST_P
197 # sc must be left pointing past the last created entry.
198 # pc must be left pointing past the last created entry.
199 # If the pbb is terminated by a cti insn, SET_CTI_VPC(sc) must be called
200 # to record the vpc of the cti insn.
201 # SET_INSN_COUNT(n) must be called to record number of real insns.
211 /* This only occurs when single stepping.
212 The test is unnecessary otherwise, but the cost is teensy,
213 compared with decoding/extraction. */
214 UHI insn = GETIMEMUHI (current_cpu, pc);
215 idesc = extract16 (current_cpu, pc, insn & 0x7fff, &sc->argbuf, FAST_P);
220 if (IDESC_CTI_P (idesc))
222 SET_CTI_VPC (sc - 1);
227 while (max_insns > 0)
229 USI insn = GETIMEMUSI (current_cpu, pc);
232 idesc = extract32 (current_cpu, pc, insn, &sc->argbuf, FAST_P);
237 if (IDESC_CTI_P (idesc))
239 SET_CTI_VPC (sc - 1);
245 idesc = extract16 (current_cpu, pc, insn >> 16, &sc->argbuf, FAST_P);
250 if (IDESC_CTI_P (idesc))
252 SET_CTI_VPC (sc - 1);
255 /* The m32r doesn't support parallel execution. */
256 if ((insn & 0x8000) != 0)
258 /* ??? Defer signalling to execution. */
259 if ((insn & 0x7fff) != 0x7000) /* parallel nops are ok */
260 sim_engine_invalid_insn (current_cpu, pc - 2, 0);
261 /* There's no point in processing parallel nops in fast mode.
262 We might as well do this test since we've already tested
263 that we have a parallel nop. */
272 /* Non-parallel case.
273 While we're guaranteed that there's room to extract the
274 insn, when single stepping we can't; the pbb must stop
275 after the first insn. */
279 /* We're guaranteed that we can always process 16 bit insns in
281 idesc = extract16 (current_cpu, pc, insn & 0x7fff, &sc->argbuf, FAST_P);
286 if (IDESC_CTI_P (idesc))
288 SET_CTI_VPC (sc - 1);
295 SET_INSN_COUNT (icount);
301 xfull-exec-* | xfast-exec-*)
303 # Inputs: current_cpu, vpc, FAST_P
305 # vpc is the virtual program counter.
309 #if (! FAST_P && WITH_SEM_SWITCH_FULL) || (FAST_P && WITH_SEM_SWITCH_FAST)
310 #define DEFINE_SWITCH
311 #include "sem-switch.c"
313 vpc = execute (current_cpu, vpc, FAST_P);
320 echo "Invalid argument to mainloop.in: $1" >&2