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/* CRIS v10 simulator support code
Copyright (C) 2004-2021 Free Software Foundation, Inc.
Contributed by Axis Communications.
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 of the License, 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/>. */
/* The infrastructure is based on that of i960.c. */
/* This must come before any other includes. */
#include "defs.h"
#define WANT_CPU_CRISV10F
#define BASENUM 10
#define CRIS_TLS_REGISTER 14
#include "cris-tmpl.c"
#if WITH_PROFILE_MODEL_P
/* Model function for u-multiply unit. */
int
MY (XCONCAT3 (f_model_crisv,BASENUM,
_u_multiply)) (SIM_CPU *current_cpu ATTRIBUTE_UNUSED,
const IDESC *idesc ATTRIBUTE_UNUSED,
int unit_num ATTRIBUTE_UNUSED,
int referenced ATTRIBUTE_UNUSED)
{
return 1;
}
#endif /* WITH_PROFILE_MODEL_P */
/* Do the interrupt sequence if possible, and return 1. If interrupts
are disabled or some other lockout is active, return 0 and do
nothing.
Beware, the v10 implementation is incomplete and doesn't properly
lock out interrupts e.g. after special-register access and doesn't
handle user-mode. */
int
MY (deliver_interrupt) (SIM_CPU *current_cpu,
enum cris_interrupt_type type,
unsigned int vec)
{
unsigned char entryaddr_le[4];
int was_user;
SIM_DESC sd = CPU_STATE (current_cpu);
unsigned32 entryaddr;
/* We haven't implemented other interrupt-types yet. */
if (type != CRIS_INT_INT)
abort ();
/* We're supposed to be called outside of prefixes and branch
delay-slots etc, but why not check. */
if (GET_H_INSN_PREFIXED_P ())
abort ();
if (!GET_H_IBIT ())
return 0;
/* User mode isn't supported for interrupts. (And we shouldn't see
this as 1 anyway. The user-mode bit isn't visible from user
mode. It doesn't make it into the U bit until the next
interrupt/exception.) */
if (GET_H_UBIT ())
abort ();
SET_H_PBIT (1);
if (sim_core_read_buffer (sd,
current_cpu,
read_map, entryaddr_le,
GET_H_SR (H_SR_PRE_V32_IBR) + vec * 4, 4) == 0)
{
/* Nothing to do actually; either abort or send a signal. */
sim_core_signal (sd, current_cpu, CPU_PC_GET (current_cpu), 0, 4,
GET_H_SR (H_SR_PRE_V32_IBR) + vec * 4,
read_transfer, sim_core_unmapped_signal);
return 0;
}
entryaddr = bfd_getl32 (entryaddr_le);
SET_H_SR (H_SR_PRE_V32_IRP, GET_H_PC ());
SET_H_PC (entryaddr);
return 1;
}
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