1 # Simulator main loop for CRIS. -*- C -*-
2 # Copyright (C) 2004-2013 Free Software Foundation, Inc.
3 # Contributed by Axis Communications.
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/>.
20 # Based on the fr30 file.
23 # /bin/sh mainloop.in command
29 # extract-{simple,scache,pbb}
30 # {full,fast}-exec-{simple,scache,pbb}
32 # A target need only provide a "full" version of one of simple,scache,pbb.
33 # If the target wants it can also provide a fast version of same.
34 # It can't provide more than this, however for illustration's sake the CRIS
35 # port provides examples of all.
37 # ??? After a few more ports are done, revisit.
38 # Will eventually need to machine generate a lot of this.
45 /* It seems we don't have a templated header file corresponding to
46 cris-tmpl.c, so we have to get out declarations the hackish way. */
47 extern void @cpu@_specific_init (SIM_CPU *current_cpu);
49 static INLINE const IDESC *
50 extract (SIM_CPU *current_cpu, PCADDR pc, CGEN_INSN_INT insn, ARGBUF *abuf,
53 const IDESC *id = @cpu@_decode (current_cpu, pc, insn,
58 @cpu@_fill_argbuf (current_cpu, abuf, id, pc, fast_p);
61 int trace_p = PC_IN_TRACE_RANGE_P (current_cpu, pc);
62 int profile_p = PC_IN_PROFILE_RANGE_P (current_cpu, pc);
63 @cpu@_fill_argbuf_tp (current_cpu, abuf, trace_p, profile_p);
69 execute (SIM_CPU *current_cpu, SCACHE *sc, int fast_p)
75 #if ! WITH_SEM_SWITCH_FAST
77 vpc = (*sc->argbuf.semantic.sem_fast) (current_cpu, sc);
79 vpc = (*sc->argbuf.semantic.sem_fast) (current_cpu, &sc->argbuf);
83 #endif /* WITH_SEM_SWITCH_FAST */
87 #if ! WITH_SEM_SWITCH_FULL
88 ARGBUF *abuf = &sc->argbuf;
89 const IDESC *idesc = abuf->idesc;
91 int virtual_p = CGEN_ATTR_VALUE (NULL, idesc->attrs, CGEN_INSN_VIRTUAL);
98 /* FIXME: call x-before */
99 if (ARGBUF_PROFILE_P (abuf))
100 PROFILE_COUNT_INSN (current_cpu, abuf->addr, idesc->num);
101 /* FIXME: Later make cover macros: PROFILE_INSN_{INIT,FINI}. */
102 if (PROFILE_MODEL_P (current_cpu)
103 && ARGBUF_PROFILE_P (abuf))
104 @cpu@_model_insn_before (current_cpu, 1 /*first_p*/);
105 TRACE_INSN_INIT (current_cpu, abuf, 1);
106 TRACE_INSN (current_cpu, idesc->idata,
107 (const struct argbuf *) abuf, abuf->addr);
110 vpc = (*sc->argbuf.semantic.sem_full) (current_cpu, sc);
112 vpc = (*sc->argbuf.semantic.sem_full) (current_cpu, abuf);
116 /* FIXME: call x-after */
117 if (PROFILE_MODEL_P (current_cpu)
118 && ARGBUF_PROFILE_P (abuf))
122 cycles = (*idesc->timing->model_fn) (current_cpu, sc);
123 @cpu@_model_insn_after (current_cpu, 1 /*last_p*/, cycles);
125 TRACE_INSN_FINI (current_cpu, abuf, 1);
129 #endif /* WITH_SEM_SWITCH_FULL */
142 /* This seemed the only sane location to emit a call to a
143 model-specific init function. It may not work for all simulator
144 types. FIXME: Introduce a model-init hook. */
146 /* We use the same condition as the code that's expected to follow, so
147 GCC can consolidate the code with only one conditional. */
148 if (! CPU_IDESC_SEM_INIT_P (current_cpu))
149 @cpu@_specific_init (current_cpu);
154 xextract-simple | xextract-scache)
156 # Inputs: current_cpu, vpc, sc, FAST_P
157 # Outputs: sc filled in
161 CGEN_INSN_INT insn = GETIMEMUHI (current_cpu, vpc);
162 extract (current_cpu, vpc, insn, SEM_ARGBUF (sc), FAST_P);
170 # Inputs: current_cpu, pc, sc, max_insns, FAST_P
172 # sc must be left pointing past the last created entry.
173 # pc must be left pointing past the last created entry.
174 # If the pbb is terminated by a cti insn, SET_CTI_VPC(sc) must be called
175 # to record the vpc of the cti insn.
176 # SET_INSN_COUNT(n) must be called to record number of real insns.
183 /* Make sure the buffer doesn't overflow for profiled insns if
184 max_insns happens to not be a multiple of 3. */
188 /* There might be two real insns handled per loop. */
191 while (max_insns > 0)
193 UHI insn = GETIMEMUHI (current_cpu, pc);
194 int trace_p = PC_IN_TRACE_RANGE_P (current_cpu, pc);
195 int profile_p = PC_IN_PROFILE_RANGE_P (current_cpu, pc);
196 int befaft_p = profile_p || trace_p;
200 @cpu@_emit_before (current_cpu, sc, pc, 1);
202 sc->argbuf.trace_p = trace_p;
203 sc->argbuf.profile_p = profile_p;
207 idesc = extract (current_cpu, pc, insn, &sc->argbuf, FAST_P);
214 @cpu@_emit_after (current_cpu, sc, pc);
221 if (IDESC_CTI_P (idesc))
223 SET_CTI_VPC (sc - 1);
225 /* Delay slot? Ignore for zero-instructions (bcc .+2) since
226 those are treated as exit insns to avoid runaway sessions
227 for invalid programs. */
228 if (insn != 0 && CGEN_ATTR_VALUE (NULL, idesc->attrs, CGEN_INSN_DELAY_SLOT))
231 trace_p = PC_IN_TRACE_RANGE_P (current_cpu, pc);
232 profile_p = PC_IN_PROFILE_RANGE_P (current_cpu, pc);
233 befaft_p = profile_p || trace_p;
237 @cpu@_emit_before (current_cpu, sc, pc, 1);
239 sc->argbuf.trace_p = trace_p;
240 sc->argbuf.profile_p = profile_p;
244 insn = GETIMEMUHI (current_cpu, pc);
245 idesc = extract (current_cpu, pc, insn, &sc->argbuf, FAST_P);
252 @cpu@_emit_after (current_cpu, sc, pc);
263 SET_INSN_COUNT (icount);
269 xfull-exec-* | xfast-exec-*)
271 # Inputs: current_cpu, sc, FAST_P
273 # vpc contains the address of the next insn to execute
277 #if (! FAST_P && WITH_SEM_SWITCH_FULL) || (FAST_P && WITH_SEM_SWITCH_FAST)
278 #define DEFINE_SWITCH
279 #include "sem@cpu@-switch.c"
281 vpc = execute (current_cpu, vpc, FAST_P);
289 echo "Invalid argument to mainloop.in: $1" >&2