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6df01ab8ab
The defs.h header will take care of including the various config.h headers. For now, it's just config.h, but we'll add more when we integrate gnulib in. This header should be used instead of config.h, and should be the first include in every .c file. We won't rely on the old behavior where we expected files to include the port's sim-main.h which then includes the common sim-basics.h which then includes config.h. We have a ton of code that includes things before sim-main.h, and it sometimes needs to be that way. Creating a dedicated header avoids the ordering mess and implicit inclusion that shows up otherwise.
95 lines
2.6 KiB
C
95 lines
2.6 KiB
C
/* frv vliw model.
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Copyright (C) 1999-2021 Free Software Foundation, Inc.
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Contributed by Red Hat.
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This file is part of the GNU simulators.
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This program is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 3 of the License, or
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(at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program. If not, see <http://www.gnu.org/licenses/>. */
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/* This must come before any other includes. */
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#include "defs.h"
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#define WANT_CPU frvbf
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#define WANT_CPU_FRVBF
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#include "sim-main.h"
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/* Simulator specific vliw related functions. Additional vliw related
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code used by both the simulator and the assembler is in frv.opc. */
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int insns_in_slot[UNIT_NUM_UNITS] = {0};
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void
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frv_vliw_setup_insn (SIM_CPU *current_cpu, const CGEN_INSN *insn)
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{
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FRV_VLIW *vliw;
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int index;
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/* Always clear the NE index which indicates the target register
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of a non excepting insn. This will be reset by the insn if
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necessary. */
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frv_interrupt_state.ne_index = NE_NOFLAG;
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vliw = CPU_VLIW (current_cpu);
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index = vliw->next_slot - 1;
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if (frv_is_float_insn (insn))
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{
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/* If the insn is to be added and is a floating point insn and
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it is the first floating point insn in the vliw, then clear
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FSR0.FTT. */
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int i;
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for (i = 0; i < index; ++i)
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if (frv_is_float_major (vliw->major[i], vliw->mach))
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break; /* found float insn. */
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if (i >= index)
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{
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SI fsr0 = GET_FSR (0);
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SET_FSR_FTT (fsr0, FTT_NONE);
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SET_FSR (0, fsr0);
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}
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}
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else if (frv_is_media_insn (insn))
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{
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/* Clear the appropriate MSR fields depending on which slot
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this insn is in. */
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CGEN_ATTR_VALUE_ENUM_TYPE preserve_ovf;
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SI msr0 = GET_MSR (0);
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preserve_ovf = CGEN_INSN_ATTR_VALUE (insn, CGEN_INSN_PRESERVE_OVF);
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if ((*vliw->current_vliw)[index] == UNIT_FM0)
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{
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if (! preserve_ovf)
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{
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/* Clear MSR0.OVF and MSR0.SIE. */
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CLEAR_MSR_SIE (msr0);
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CLEAR_MSR_OVF (msr0);
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}
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}
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else
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{
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if (! preserve_ovf)
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{
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/* Clear MSR1.OVF and MSR1.SIE. */
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SI msr1 = GET_MSR (1);
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CLEAR_MSR_SIE (msr1);
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CLEAR_MSR_OVF (msr1);
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SET_MSR (1, msr1);
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}
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}
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SET_MSR (0, msr0);
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} /* Insn is a media insns. */
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COUNT_INSNS_IN_SLOT ((*vliw->current_vliw)[index]);
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}
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