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fa8b7c21 SH |
1 | # Simulator main loop for or1k. -*- C -*- |
2 | # | |
e2882c85 | 3 | # Copyright (C) 2017-2018 Free Software Foundation, Inc. |
fa8b7c21 SH |
4 | # |
5 | # This file is part of the GNU Simulators. | |
6 | # | |
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. | |
11 | # | |
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. | |
16 | # | |
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/>. | |
19 | ||
20 | # Syntax: | |
21 | # /bin/sh mainloop.in command | |
22 | # | |
23 | # Command is one of: | |
24 | # | |
25 | # init | |
26 | # support | |
27 | # extract-{simple,scache,pbb} | |
28 | # {full,fast}-exec-{simple,scache,pbb} | |
29 | # | |
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 | |
33 | # one of scache/pbb. | |
34 | # A target can't provide more than this. | |
35 | # However for illustration's sake this file provides examples of all. | |
36 | ||
37 | # ??? After a few more ports are done, revisit. | |
38 | # Will eventually need to machine generate a lot of this. | |
39 | ||
40 | case "x$1" in | |
41 | ||
42 | xsupport) | |
43 | ||
44 | cat <<EOF | |
45 | ||
46 | static INLINE const IDESC * | |
47 | extract (SIM_CPU *current_cpu, PCADDR pc, CGEN_INSN_INT insn, | |
48 | ARGBUF *abuf, int fast_p) | |
49 | { | |
50 | const IDESC *id = @cpu@_decode (current_cpu, pc, insn, insn, abuf); | |
51 | @cpu@_fill_argbuf (current_cpu, abuf, id, pc, fast_p); | |
52 | if (!fast_p) | |
53 | { | |
54 | int trace_p = PC_IN_TRACE_RANGE_P (current_cpu, pc); | |
55 | int profile_p = PC_IN_PROFILE_RANGE_P (current_cpu, pc); | |
56 | @cpu@_fill_argbuf_tp (current_cpu, abuf, trace_p, profile_p); | |
57 | } | |
58 | return id; | |
59 | } | |
60 | ||
61 | static INLINE SEM_PC | |
62 | execute (SIM_CPU *current_cpu, SCACHE *sc, int fast_p) | |
63 | { | |
64 | SEM_PC vpc = sc; | |
65 | ||
66 | @cpu@_insn_before (current_cpu, vpc, sc->argbuf.idesc); | |
67 | ||
68 | if (fast_p) | |
69 | { | |
70 | #if ! WITH_SEM_SWITCH_FAST | |
71 | #if WITH_SCACHE | |
72 | vpc = (*sc->argbuf.semantic.sem_fast) (current_cpu, sc); | |
73 | #else | |
74 | vpc = (*sc->argbuf.semantic.sem_fast) (current_cpu, &sc->argbuf); | |
75 | #endif | |
76 | #else | |
77 | abort (); | |
78 | #endif /* WITH_SEM_SWITCH_FAST */ | |
79 | } | |
80 | else | |
81 | { | |
82 | #if ! WITH_SEM_SWITCH_FULL | |
83 | ARGBUF *abuf = &sc->argbuf; | |
84 | const IDESC *idesc = abuf->idesc; | |
85 | const CGEN_INSN *idata = idesc->idata; | |
86 | #if WITH_SCACHE_PBB | |
87 | int virtual_p = CGEN_INSN_ATTR_VALUE (idata, CGEN_INSN_VIRTUAL); | |
88 | #else | |
89 | int virtual_p = 0; | |
90 | #endif | |
91 | ||
92 | if (! virtual_p) | |
93 | { | |
94 | /* FIXME: call x-before */ | |
95 | if (ARGBUF_PROFILE_P (abuf)) | |
96 | PROFILE_COUNT_INSN (current_cpu, abuf->addr, idesc->num); | |
97 | /* FIXME: Later make cover macros: PROFILE_INSN_{INIT,FINI}. */ | |
98 | if (PROFILE_MODEL_P (current_cpu) | |
99 | && ARGBUF_PROFILE_P (abuf)) | |
100 | @cpu@_model_insn_before (current_cpu, 1 /*first_p*/); | |
101 | CGEN_TRACE_INSN_INIT (current_cpu, abuf, 1); | |
102 | CGEN_TRACE_INSN (current_cpu, idata, | |
103 | (const struct argbuf *) abuf, abuf->addr); | |
104 | } | |
105 | #if WITH_SCACHE | |
106 | vpc = (*sc->argbuf.semantic.sem_full) (current_cpu, sc); | |
107 | #else | |
108 | vpc = (*sc->argbuf.semantic.sem_full) (current_cpu, abuf); | |
109 | #endif | |
110 | if (! virtual_p) | |
111 | { | |
112 | /* FIXME: call x-after */ | |
113 | if (PROFILE_MODEL_P (current_cpu) | |
114 | && ARGBUF_PROFILE_P (abuf)) | |
115 | { | |
116 | int cycles; | |
117 | ||
118 | cycles = (*idesc->timing->model_fn) (current_cpu, sc); | |
119 | @cpu@_model_insn_after (current_cpu, 1 /*last_p*/, cycles); | |
120 | } | |
121 | CGEN_TRACE_INSN_FINI (current_cpu, abuf, 1); | |
122 | } | |
123 | #else | |
124 | abort (); | |
125 | #endif /* WITH_SEM_SWITCH_FULL */ | |
126 | } | |
127 | ||
128 | @cpu@_insn_after (current_cpu, vpc, sc->argbuf.idesc); | |
129 | ||
130 | return vpc; | |
131 | } | |
132 | ||
133 | EOF | |
134 | ||
135 | ;; | |
136 | ||
137 | xinit) | |
138 | ||
139 | # Nothing needed. | |
140 | ||
141 | ;; | |
142 | ||
143 | xextract-simple | xextract-scache) | |
144 | ||
145 | cat <<EOF | |
146 | { | |
147 | USI insn = GETIMEMUSI (current_cpu, pc); | |
148 | extract (current_cpu, pc, insn, sc, FAST_P); | |
149 | SEM_SKIP_COMPILE (current_cpu, sc, 1); | |
150 | } | |
151 | EOF | |
152 | ||
153 | ;; | |
154 | ||
155 | xextract-pbb) | |
156 | ||
157 | # Inputs: current_cpu, pc, sc, max_insns, FAST_P | |
158 | # Outputs: sc, pc | |
159 | # sc must be left pointing past the last created entry. | |
160 | # pc must be left pointing past the last created entry. | |
161 | # If the pbb is terminated by a cti insn, SET_CTI_VPC(sc) must be called | |
162 | # to record the vpc of the cti insn. | |
163 | # SET_INSN_COUNT(n) must be called to record number of real insns. | |
164 | ||
165 | cat <<EOF | |
166 | { | |
167 | const IDESC *idesc; | |
168 | int icount = 0; | |
169 | ||
170 | while (max_insns > 0) { | |
171 | ||
172 | USI insn = GETIMEMUSI (current_cpu, pc); | |
173 | ||
174 | idesc = extract (current_cpu, pc, insn, &sc->argbuf, FAST_P); | |
175 | ||
176 | SEM_SKIP_COMPILE (current_cpu, sc, 1); | |
177 | ||
178 | ++sc; | |
179 | --max_insns; | |
180 | ++icount; | |
181 | pc += 4; | |
182 | ||
183 | if (CGEN_ATTR_BOOLS (CGEN_INSN_ATTRS ((idesc)->idata)) & CGEN_ATTR_MASK (CGEN_INSN_FORCED_CTI)) | |
184 | { | |
185 | ||
186 | SET_CTI_VPC (sc - 1); | |
187 | ||
188 | break; | |
189 | ||
190 | } | |
191 | else if (CGEN_ATTR_BOOLS (CGEN_INSN_ATTRS ((idesc)->idata)) & CGEN_ATTR_MASK (CGEN_INSN_DELAYED_CTI)) | |
192 | { | |
193 | ||
194 | /* handle delay slot */ | |
195 | SET_CTI_VPC (sc - 1); | |
196 | ||
197 | insn = GETIMEMUSI (current_cpu, pc); | |
198 | ||
199 | idesc = extract (current_cpu, pc, insn, &sc->argbuf, FAST_P); | |
200 | ||
201 | ++sc; | |
202 | --max_insns; | |
203 | ++icount; | |
204 | pc += 4; | |
205 | ||
206 | break; | |
207 | } | |
208 | } | |
209 | ||
210 | SET_INSN_COUNT (icount); | |
211 | ||
212 | } | |
213 | EOF | |
214 | ||
215 | ;; | |
216 | ||
217 | xfull-exec-* | xfast-exec-*) | |
218 | ||
219 | # Inputs: current_cpu, vpc, FAST_P | |
220 | # Outputs: vpc | |
221 | # vpc is the virtual program counter. | |
222 | ||
223 | cat <<EOF | |
224 | #if (! FAST_P && WITH_SEM_SWITCH_FULL) || (FAST_P && WITH_SEM_SWITCH_FAST) | |
225 | #define DEFINE_SWITCH | |
226 | #ifdef WANT_CPU_OR1K32BF | |
227 | #include "sem-switch.c" | |
228 | #endif | |
229 | #else | |
230 | vpc = execute (current_cpu, vpc, FAST_P); | |
231 | #endif | |
232 | EOF | |
233 | ||
234 | ;; | |
235 | ||
236 | *) | |
237 | echo "Invalid argument to mainloop.in: $1" >&2 | |
238 | exit 1 | |
239 | ;; | |
240 | ||
241 | esac |