1 # Simulator main loop for or1k. -*- C -*-
3 # Copyright (C) 2017-2023 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 extract (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);
52 @cpu@_fill_argbuf (current_cpu, abuf, id, pc, fast_p);
55 int trace_p = PC_IN_TRACE_RANGE_P (current_cpu, pc);
56 int profile_p = PC_IN_PROFILE_RANGE_P (current_cpu, pc);
57 @cpu@_fill_argbuf_tp (current_cpu, abuf, trace_p, profile_p);
63 execute (SIM_CPU *current_cpu, SCACHE *sc, int fast_p)
67 @cpu@_insn_before (current_cpu, vpc, sc->argbuf.idesc);
71 #if ! WITH_SEM_SWITCH_FAST
73 vpc = (*sc->argbuf.semantic.sem_fast) (current_cpu, sc);
75 vpc = (*sc->argbuf.semantic.sem_fast) (current_cpu, &sc->argbuf);
79 #endif /* WITH_SEM_SWITCH_FAST */
83 #if ! WITH_SEM_SWITCH_FULL
84 ARGBUF *abuf = &sc->argbuf;
85 const IDESC *idesc = abuf->idesc;
86 const CGEN_INSN *idata = idesc->idata;
88 int virtual_p = CGEN_INSN_ATTR_VALUE (idata, CGEN_INSN_VIRTUAL);
95 /* FIXME: call x-before */
96 if (ARGBUF_PROFILE_P (abuf))
97 PROFILE_COUNT_INSN (current_cpu, abuf->addr, idesc->num);
98 /* FIXME: Later make cover macros: PROFILE_INSN_{INIT,FINI}. */
99 if (PROFILE_MODEL_P (current_cpu)
100 && ARGBUF_PROFILE_P (abuf))
101 @cpu@_model_insn_before (current_cpu, 1 /*first_p*/);
102 CGEN_TRACE_INSN_INIT (current_cpu, abuf, 1);
103 CGEN_TRACE_INSN (current_cpu, idata,
104 (const struct argbuf *) abuf, abuf->addr);
107 vpc = (*sc->argbuf.semantic.sem_full) (current_cpu, sc);
109 vpc = (*sc->argbuf.semantic.sem_full) (current_cpu, abuf);
113 /* FIXME: call x-after */
114 if (PROFILE_MODEL_P (current_cpu)
115 && ARGBUF_PROFILE_P (abuf))
119 cycles = (*idesc->timing->model_fn) (current_cpu, sc);
120 @cpu@_model_insn_after (current_cpu, 1 /*last_p*/, cycles);
122 CGEN_TRACE_INSN_FINI (current_cpu, abuf, 1);
126 #endif /* WITH_SEM_SWITCH_FULL */
129 @cpu@_insn_after (current_cpu, vpc, sc->argbuf.idesc);
144 xextract-simple | xextract-scache)
148 USI insn = GETIMEMUSI (current_cpu, pc);
149 extract (current_cpu, pc, insn, sc, FAST_P);
150 SEM_SKIP_COMPILE (current_cpu, sc, 1);
158 # Inputs: current_cpu, pc, sc, max_insns, FAST_P
160 # sc must be left pointing past the last created entry.
161 # pc must be left pointing past the last created entry.
162 # If the pbb is terminated by a cti insn, SET_CTI_VPC(sc) must be called
163 # to record the vpc of the cti insn.
164 # SET_INSN_COUNT(n) must be called to record number of real insns.
171 while (max_insns > 0) {
173 USI insn = GETIMEMUSI (current_cpu, pc);
175 idesc = extract (current_cpu, pc, insn, &sc->argbuf, FAST_P);
177 SEM_SKIP_COMPILE (current_cpu, sc, 1);
184 if (CGEN_ATTR_BOOLS (CGEN_INSN_ATTRS ((idesc)->idata)) & CGEN_ATTR_MASK (CGEN_INSN_FORCED_CTI))
187 SET_CTI_VPC (sc - 1);
192 else if (CGEN_ATTR_BOOLS (CGEN_INSN_ATTRS ((idesc)->idata)) & CGEN_ATTR_MASK (CGEN_INSN_DELAYED_CTI))
195 /* handle delay slot */
196 SET_CTI_VPC (sc - 1);
198 insn = GETIMEMUSI (current_cpu, pc);
200 idesc = extract (current_cpu, pc, insn, &sc->argbuf, FAST_P);
211 SET_INSN_COUNT (icount);
218 xfull-exec-* | xfast-exec-*)
220 # Inputs: current_cpu, vpc, FAST_P
222 # vpc is the virtual program counter.
225 #if (! FAST_P && WITH_SEM_SWITCH_FULL) || (FAST_P && WITH_SEM_SWITCH_FAST)
226 #define DEFINE_SWITCH
227 #ifdef WANT_CPU_OR1K32BF
228 #include "sem-switch.c"
231 vpc = execute (current_cpu, vpc, FAST_P);
238 echo "Invalid argument to mainloop.in: $1" >&2