1 # Simulator main loop for or1k. -*- C -*-
3 # Copyright (C) 2017-2024 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 extract (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);
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);
64 execute (SIM_CPU *current_cpu, SCACHE *sc, int fast_p)
68 @cpu@_insn_before (current_cpu, vpc, sc->argbuf.idesc);
72 #if ! WITH_SEM_SWITCH_FAST
74 vpc = (*sc->argbuf.semantic.sem_fast) (current_cpu, sc);
76 vpc = (*sc->argbuf.semantic.sem_fast) (current_cpu, &sc->argbuf);
80 #endif /* WITH_SEM_SWITCH_FAST */
84 #if ! WITH_SEM_SWITCH_FULL
85 ARGBUF *abuf = &sc->argbuf;
86 const IDESC *idesc = abuf->idesc;
87 const CGEN_INSN *idata = idesc->idata;
89 int virtual_p = CGEN_INSN_ATTR_VALUE (idata, CGEN_INSN_VIRTUAL);
96 /* FIXME: call x-before */
97 if (ARGBUF_PROFILE_P (abuf))
98 PROFILE_COUNT_INSN (current_cpu, abuf->addr, idesc->num);
99 /* FIXME: Later make cover macros: PROFILE_INSN_{INIT,FINI}. */
100 if (PROFILE_MODEL_P (current_cpu)
101 && ARGBUF_PROFILE_P (abuf))
102 @cpu@_model_insn_before (current_cpu, 1 /*first_p*/);
103 CGEN_TRACE_INSN_INIT (current_cpu, abuf, 1);
104 CGEN_TRACE_INSN (current_cpu, idata,
105 (const struct argbuf *) abuf, abuf->addr);
108 vpc = (*sc->argbuf.semantic.sem_full) (current_cpu, sc);
110 vpc = (*sc->argbuf.semantic.sem_full) (current_cpu, abuf);
114 /* FIXME: call x-after */
115 if (PROFILE_MODEL_P (current_cpu)
116 && ARGBUF_PROFILE_P (abuf))
120 cycles = (*idesc->timing->model_fn) (current_cpu, sc);
121 @cpu@_model_insn_after (current_cpu, 1 /*last_p*/, cycles);
123 CGEN_TRACE_INSN_FINI (current_cpu, abuf, 1);
127 #endif /* WITH_SEM_SWITCH_FULL */
130 @cpu@_insn_after (current_cpu, vpc, sc->argbuf.idesc);
145 xextract-simple | xextract-scache)
150 USI insn = GETIMEMUSI (current_cpu, pc);
151 extract (current_cpu, pc, insn, sc, FAST_P);
152 SEM_SKIP_COMPILE (current_cpu, sc, 1);
160 # Inputs: current_cpu, pc, sc, max_insns, FAST_P
162 # sc must be left pointing past the last created entry.
163 # pc must be left pointing past the last created entry.
164 # If the pbb is terminated by a cti insn, SET_CTI_VPC(sc) must be called
165 # to record the vpc of the cti insn.
166 # SET_INSN_COUNT(n) must be called to record number of real insns.
174 while (max_insns > 0) {
176 USI insn = GETIMEMUSI (current_cpu, pc);
178 idesc = extract (current_cpu, pc, insn, &sc->argbuf, FAST_P);
180 SEM_SKIP_COMPILE (current_cpu, sc, 1);
187 if (CGEN_ATTR_BOOLS (CGEN_INSN_ATTRS ((idesc)->idata)) & CGEN_ATTR_MASK (CGEN_INSN_FORCED_CTI))
190 SET_CTI_VPC (sc - 1);
195 else if (CGEN_ATTR_BOOLS (CGEN_INSN_ATTRS ((idesc)->idata)) & CGEN_ATTR_MASK (CGEN_INSN_DELAYED_CTI))
198 /* handle delay slot */
199 SET_CTI_VPC (sc - 1);
201 insn = GETIMEMUSI (current_cpu, pc);
203 idesc = extract (current_cpu, pc, insn, &sc->argbuf, FAST_P);
214 SET_INSN_COUNT (icount);
221 xfull-exec-* | xfast-exec-*)
223 # Inputs: current_cpu, vpc, FAST_P
225 # vpc is the virtual program counter.
229 #if (! FAST_P && WITH_SEM_SWITCH_FULL) || (FAST_P && WITH_SEM_SWITCH_FAST)
230 #define DEFINE_SWITCH
231 #ifdef WANT_CPU_OR1K32BF
232 #include "sem-switch.c"
235 vpc = execute (current_cpu, vpc, FAST_P);
242 echo "Invalid argument to mainloop.in: $1" >&2