mirror of
https://sourceware.org/git/binutils-gdb.git
synced 2024-12-21 04:42:53 +08:00
102 lines
2.9 KiB
C
102 lines
2.9 KiB
C
/* CRIS v10 simulator support code
|
|
Copyright (C) 2004-2018 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. */
|
|
|
|
#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;
|
|
}
|