| # Simulator main loop for lm32. -*- C -*- |
| # Contributed by Jon Beniston <jon@beniston.com> |
| # |
| # This file is part of the GNU Simulators. |
| # |
| # This program is free software; you can redistribute it and/or modify |
| # it under the terms of the GNU General Public License as published by |
| # the Free Software Foundation; either version 3, or (at your option) |
| # any later version. |
| # |
| # This program is distributed in the hope that it will be useful, |
| # but WITHOUT ANY WARRANTY; without even the implied warranty of |
| # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| # GNU General Public License for more details. |
| # |
| # You should have received a copy of the GNU General Public License along |
| # with this program; if not, see <http://www.gnu.org/licenses/>. |
| |
| # Syntax: |
| # /bin/sh mainloop.in command |
| # |
| # Command is one of: |
| # |
| # init |
| # support |
| # extract-{simple,scache,pbb} |
| # {full,fast}-exec-{simple,scache,pbb} |
| # |
| |
| case "x$1" in |
| |
| xsupport) |
| |
| cat <<EOF |
| #include <stdlib.h> |
| |
| static INLINE const IDESC * |
| extract (SIM_CPU *current_cpu, PCADDR pc, CGEN_INSN_INT insn, |
| ARGBUF *abuf, int fast_p) |
| { |
| const IDESC *id = @cpu@_decode (current_cpu, pc, insn, insn, abuf); |
| |
| @cpu@_fill_argbuf (current_cpu, abuf, id, pc, fast_p); |
| if (! fast_p) |
| { |
| int trace_p = PC_IN_TRACE_RANGE_P (current_cpu, pc); |
| int profile_p = PC_IN_PROFILE_RANGE_P (current_cpu, pc); |
| @cpu@_fill_argbuf_tp (current_cpu, abuf, trace_p, profile_p); |
| } |
| return id; |
| } |
| |
| static INLINE SEM_PC |
| execute (SIM_CPU *current_cpu, SCACHE *sc, int fast_p) |
| { |
| SEM_PC vpc; |
| |
| if (fast_p) |
| { |
| #if ! WITH_SEM_SWITCH_FAST |
| #if WITH_SCACHE |
| vpc = (*sc->argbuf.semantic.sem_fast) (current_cpu, sc); |
| #else |
| vpc = (*sc->argbuf.semantic.sem_fast) (current_cpu, &sc->argbuf); |
| #endif |
| #else |
| abort (); |
| #endif /* WITH_SEM_SWITCH_FAST */ |
| } |
| else |
| { |
| #if ! WITH_SEM_SWITCH_FULL |
| ARGBUF *abuf = &sc->argbuf; |
| const IDESC *idesc = abuf->idesc; |
| const CGEN_INSN *idata = idesc->idata; |
| #if WITH_SCACHE_PBB |
| int virtual_p = CGEN_INSN_ATTR_VALUE (idata, CGEN_INSN_VIRTUAL); |
| #else |
| int virtual_p = 0; |
| #endif |
| if (! virtual_p) |
| { |
| /* FIXME: call x-before */ |
| if (ARGBUF_PROFILE_P (abuf)) |
| PROFILE_COUNT_INSN (current_cpu, abuf->addr, idesc->num); |
| /* FIXME: Later make cover macros: PROFILE_INSN_{INIT,FINI}. */ |
| if (PROFILE_MODEL_P (current_cpu) |
| && ARGBUF_PROFILE_P (abuf)) |
| @cpu@_model_insn_before (current_cpu, 1 /*first_p*/); |
| CGEN_TRACE_INSN_INIT (current_cpu, abuf, 1); |
| CGEN_TRACE_INSN (current_cpu, idata, |
| (const struct argbuf *) abuf, abuf->addr); |
| } |
| #if WITH_SCACHE |
| vpc = (*sc->argbuf.semantic.sem_full) (current_cpu, sc); |
| #else |
| vpc = (*sc->argbuf.semantic.sem_full) (current_cpu, abuf); |
| #endif |
| if (! virtual_p) |
| { |
| /* FIXME: call x-after */ |
| if (PROFILE_MODEL_P (current_cpu) |
| && ARGBUF_PROFILE_P (abuf)) |
| { |
| int cycles; |
| |
| cycles = (*idesc->timing->model_fn) (current_cpu, sc); |
| @cpu@_model_insn_after (current_cpu, 1 /*last_p*/, cycles); |
| } |
| CGEN_TRACE_INSN_FINI (current_cpu, abuf, 1); |
| } |
| #else |
| abort (); |
| #endif /* WITH_SEM_SWITCH_FULL */ |
| } |
| |
| return vpc; |
| } |
| |
| EOF |
| |
| ;; |
| |
| xinit) |
| |
| # Nothing needed. |
| |
| ;; |
| |
| xextract-simple | xextract-scache) |
| |
| cat <<EOF |
| { |
| CGEN_INSN_INT insn = GETIMEMUSI (current_cpu, vpc); |
| extract (current_cpu, vpc, insn, SEM_ARGBUF (sc), FAST_P); |
| } |
| EOF |
| |
| ;; |
| |
| xextract-pbb) |
| |
| # Inputs: current_cpu, pc, sc, max_insns, FAST_P |
| # Outputs: sc, pc |
| # sc must be left pointing past the last created entry. |
| # pc must be left pointing past the last created entry. |
| # If the pbb is terminated by a cti insn, SET_CTI_VPC(sc) must be called |
| # to record the vpc of the cti insn. |
| # SET_INSN_COUNT(n) must be called to record number of real insns. |
| |
| cat <<EOF |
| { |
| const IDESC *idesc; |
| int icount = 0; |
| |
| while (max_insns > 0) |
| { |
| USI insn = GETIMEMUSI (current_cpu, pc); |
| |
| idesc = extract (current_cpu, pc, insn, &sc->argbuf, FAST_P); |
| ++sc; |
| --max_insns; |
| ++icount; |
| pc += idesc->length; |
| |
| if (IDESC_CTI_P (idesc)) |
| { |
| SET_CTI_VPC (sc - 1); |
| break; |
| } |
| } |
| |
| Finish: |
| SET_INSN_COUNT (icount); |
| } |
| EOF |
| |
| ;; |
| |
| xfull-exec-* | xfast-exec-*) |
| |
| # Inputs: current_cpu, vpc, FAST_P |
| # Outputs: vpc |
| |
| cat <<EOF |
| /* Update cycle counter */ |
| SET_H_CSR (LM32_CSR_CC, GET_H_CSR (LM32_CSR_CC) + 1); |
| #if (! FAST_P && WITH_SEM_SWITCH_FULL) || (FAST_P && WITH_SEM_SWITCH_FAST) |
| #define DEFINE_SWITCH |
| #include "sem-switch.c" |
| #else |
| vpc = execute (current_cpu, vpc, FAST_P); |
| #endif |
| EOF |
| |
| ;; |
| |
| *) |
| echo "Invalid argument to mainloop.in: $1" >&2 |
| exit 1 |
| ;; |
| |
| esac |