/* 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 }, };