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/* Handle 0x900000xx addresses in the sim.
Copyright (C) 2004-2020 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/>. */
#include "sim-main.h"
#include "hw-main.h"
struct cris_900000xx_hw
{
};
static unsigned
cris_io_write_buffer (struct hw *me, const void *source,
int space, address_word addr, unsigned nr_bytes)
{
static const unsigned char ok[] = { 4, 0, 0, 0x90};
static const unsigned char bad[] = { 8, 0, 0, 0x90};
SIM_CPU *cpu = hw_system_cpu (me);
SIM_DESC sd = CPU_STATE (cpu);
sim_cia cia = CPU_PC_GET (cpu);
if (addr == 0x90000004 && memcmp (source, ok, sizeof ok) == 0)
return cris_break_13_handler (cpu, 1, 0, 0, 0, 0, 0, 0, cia);
else if (addr == 0x90000008
&& memcmp (source, bad, sizeof bad) == 0)
return cris_break_13_handler (cpu, 1, 34, 0, 0, 0, 0, 0, cia);
/* If it wasn't one of those, send an invalid-memory signal. */
sim_core_signal (sd, cpu, cia, 0, nr_bytes, addr,
write_transfer, sim_core_unmapped_signal);
return 0;
}
/* Instance initializer function. */
static void
attach_regs (struct hw *me, struct cris_900000xx_hw *hw)
{
address_word attach_address;
int attach_space;
unsigned attach_size;
reg_property_spec reg;
if (hw_find_property (me, "reg") == NULL)
hw_abort (me, "Missing \"reg\" property");
if (!hw_find_reg_array_property (me, "reg", 0, ®))
hw_abort (me, "\"reg\" property must contain three addr/size entries");
hw_unit_address_to_attach_address (hw_parent (me),
®.address,
&attach_space, &attach_address, me);
hw_unit_size_to_attach_size (hw_parent (me), ®.size, &attach_size, me);
hw_attach_address (hw_parent (me),
0, attach_space, attach_address, attach_size, me);
}
static void
cris_900000xx_finish (struct hw *me)
{
struct cris_900000xx_hw *hw;
hw = HW_ZALLOC (me, struct cris_900000xx_hw);
set_hw_data (me, hw);
set_hw_io_write_buffer (me, cris_io_write_buffer);
attach_regs (me, hw);
}
const struct hw_descriptor dv_cris_900000xx_descriptor[] = {
{ "cris_900000xx", cris_900000xx_finish, },
{ NULL },
};
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