1 # Simulator main loop for m32r. -*- C -*-
3 # Copyright (C) 1996-2023 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.
47 static INLINE const IDESC *
48 extract16 (SIM_CPU *current_cpu, PCADDR pc, CGEN_INSN_INT insn,
49 ARGBUF *abuf, int fast_p)
51 const IDESC *id = @cpu@_decode (current_cpu, pc, insn, insn, abuf);
53 @cpu@_fill_argbuf (current_cpu, abuf, id, pc, fast_p);
56 int trace_p = PC_IN_TRACE_RANGE_P (current_cpu, pc);
57 int profile_p = PC_IN_PROFILE_RANGE_P (current_cpu, pc);
58 @cpu@_fill_argbuf_tp (current_cpu, abuf, trace_p, profile_p);
63 static INLINE const IDESC *
64 extract32 (SIM_CPU *current_cpu, PCADDR pc, CGEN_INSN_INT insn,
65 ARGBUF *abuf, int fast_p)
67 const IDESC *id = @cpu@_decode (current_cpu, pc, (USI) insn >> 16, insn, abuf);
69 @cpu@_fill_argbuf (current_cpu, abuf, id, pc, fast_p);
72 int trace_p = PC_IN_TRACE_RANGE_P (current_cpu, pc);
73 int profile_p = PC_IN_PROFILE_RANGE_P (current_cpu, pc);
74 @cpu@_fill_argbuf_tp (current_cpu, abuf, trace_p, profile_p);
80 execute (SIM_CPU *current_cpu, SCACHE *sc, int fast_p)
86 #if ! WITH_SEM_SWITCH_FAST
88 vpc = (*sc->argbuf.semantic.sem_fast) (current_cpu, sc);
90 vpc = (*sc->argbuf.semantic.sem_fast) (current_cpu, &sc->argbuf);
94 #endif /* WITH_SEM_SWITCH_FAST */
98 #if ! WITH_SEM_SWITCH_FULL
99 ARGBUF *abuf = &sc->argbuf;
100 const IDESC *idesc = abuf->idesc;
101 const CGEN_INSN *idata = idesc->idata;
103 int virtual_p = CGEN_INSN_ATTR_VALUE (idata, CGEN_INSN_VIRTUAL);
110 /* FIXME: call x-before */
111 if (ARGBUF_PROFILE_P (abuf))
112 PROFILE_COUNT_INSN (current_cpu, abuf->addr, idesc->num);
113 /* FIXME: Later make cover macros: PROFILE_INSN_{INIT,FINI}. */
114 if (PROFILE_MODEL_P (current_cpu)
115 && ARGBUF_PROFILE_P (abuf))
116 @cpu@_model_insn_before (current_cpu, 1 /*first_p*/);
117 CGEN_TRACE_INSN_INIT (current_cpu, abuf, 1);
118 CGEN_TRACE_INSN (current_cpu, idata,
119 (const struct argbuf *) abuf, abuf->addr);
122 vpc = (*sc->argbuf.semantic.sem_full) (current_cpu, sc);
124 vpc = (*sc->argbuf.semantic.sem_full) (current_cpu, abuf);
128 /* FIXME: call x-after */
129 if (PROFILE_MODEL_P (current_cpu)
130 && ARGBUF_PROFILE_P (abuf))
134 cycles = (*idesc->timing->model_fn) (current_cpu, sc);
135 @cpu@_model_insn_after (current_cpu, 1 /*last_p*/, cycles);
137 CGEN_TRACE_INSN_FINI (current_cpu, abuf, 1);
141 #endif /* WITH_SEM_SWITCH_FULL */
157 xextract-simple | xextract-scache)
163 /* This only occurs when single stepping.
164 The test is unnecessary otherwise, but the cost is teensy,
165 compared with decoding/extraction. */
166 UHI insn = GETIMEMUHI (current_cpu, pc);
167 extract16 (current_cpu, pc, insn & 0x7fff, sc, FAST_P);
171 USI insn = GETIMEMUSI (current_cpu, pc);
174 extract32 (current_cpu, pc, insn, sc, FAST_P);
178 extract16 (current_cpu, pc, insn >> 16, sc, FAST_P);
179 extract16 (current_cpu, pc + 2, insn & 0x7fff, sc + 1, FAST_P);
180 /* The m32r doesn't support parallel execution. */
181 if ((insn & 0x8000) != 0
182 && (insn & 0x7fff) != 0x7000) /* parallel nops are ok */
183 sim_engine_illegal_insn (current_cpu, pc);
193 # Inputs: current_cpu, pc, sc, max_insns, FAST_P
195 # sc must be left pointing past the last created entry.
196 # pc must be left pointing past the last created entry.
197 # If the pbb is terminated by a cti insn, SET_CTI_VPC(sc) must be called
198 # to record the vpc of the cti insn.
199 # SET_INSN_COUNT(n) must be called to record number of real insns.
208 /* This only occurs when single stepping.
209 The test is unnecessary otherwise, but the cost is teensy,
210 compared with decoding/extraction. */
211 UHI insn = GETIMEMUHI (current_cpu, pc);
212 idesc = extract16 (current_cpu, pc, insn & 0x7fff, &sc->argbuf, FAST_P);
217 if (IDESC_CTI_P (idesc))
219 SET_CTI_VPC (sc - 1);
224 while (max_insns > 0)
226 USI insn = GETIMEMUSI (current_cpu, pc);
229 idesc = extract32 (current_cpu, pc, insn, &sc->argbuf, FAST_P);
234 if (IDESC_CTI_P (idesc))
236 SET_CTI_VPC (sc - 1);
242 idesc = extract16 (current_cpu, pc, insn >> 16, &sc->argbuf, FAST_P);
247 if (IDESC_CTI_P (idesc))
249 SET_CTI_VPC (sc - 1);
252 /* The m32r doesn't support parallel execution. */
253 if ((insn & 0x8000) != 0)
255 /* ??? Defer signalling to execution. */
256 if ((insn & 0x7fff) != 0x7000) /* parallel nops are ok */
257 sim_engine_invalid_insn (current_cpu, pc - 2, 0);
258 /* There's no point in processing parallel nops in fast mode.
259 We might as well do this test since we've already tested
260 that we have a parallel nop. */
269 /* Non-parallel case.
270 While we're guaranteed that there's room to extract the
271 insn, when single stepping we can't; the pbb must stop
272 after the first insn. */
276 /* We're guaranteed that we can always process 16 bit insns in
278 idesc = extract16 (current_cpu, pc, insn & 0x7fff, &sc->argbuf, FAST_P);
283 if (IDESC_CTI_P (idesc))
285 SET_CTI_VPC (sc - 1);
292 SET_INSN_COUNT (icount);
298 xfull-exec-* | xfast-exec-*)
300 # Inputs: current_cpu, vpc, FAST_P
302 # vpc is the virtual program counter.
305 #if (! FAST_P && WITH_SEM_SWITCH_FULL) || (FAST_P && WITH_SEM_SWITCH_FAST)
306 #define DEFINE_SWITCH
307 #include "sem-switch.c"
309 vpc = execute (current_cpu, vpc, FAST_P);
316 echo "Invalid argument to mainloop.in: $1" >&2