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// SPDX-License-Identifier: GPL-2.0+
/*******************************************************************************
* QtMips - MIPS 32-bit Architecture Subset Simulator
*
* Implemented to support following courses:
*
* B35APO - Computer Architectures
* https://cw.fel.cvut.cz/wiki/courses/b35apo
*
* B4M35PAP - Advanced Computer Architectures
* https://cw.fel.cvut.cz/wiki/courses/b4m35pap/start
*
* Copyright (c) 2017-2019 Karel Koci<cynerd@email.cz>
* Copyright (c) 2019 Pavel Pisa <pisa@cmp.felk.cvut.cz>
*
* Faculty of Electrical Engineering (http://www.fel.cvut.cz)
* Czech Technical University (http://www.cvut.cz/)
*
* 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 2
* 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, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor,
* Boston, MA 02110-1301, USA.
*
******************************************************************************/
#ifndef OSSYCALL_H
#define OSSYCALL_H
#include <QObject>
#include <QString>
#include <QVector>
#include <qtmipsexception.h>
#include <machineconfig.h>
#include <registers.h>
#include <memory.h>
#include <core.h>
#include <instruction.h>
#include <alu.h>
namespace osemu {
#define OSSYCALL_HANDLER_DECLARE(name) \
int name(std::uint32_t &result, machine::Core *core, \
std::uint32_t syscall_num, \
std::uint32_t a1, std::uint32_t a2, std::uint32_t a3, \
std::uint32_t a4, std::uint32_t a5, std::uint32_t a6, \
std::uint32_t a7, std::uint32_t a8)
class OsSyscallExceptionHandler : public machine::ExceptionHandler {
Q_OBJECT
public:
OsSyscallExceptionHandler(bool known_syscall_stop = false, bool unknown_syscall_stop = false,
QString fs_root = "");
bool handle_exception(machine::Core *core, machine::Registers *regs,
machine::ExceptionCause excause, std::uint32_t inst_addr,
std::uint32_t next_addr, std::uint32_t jump_branch_pc,
bool in_delay_slot, std::uint32_t mem_ref_addr);
OSSYCALL_HANDLER_DECLARE(syscall_default_handler);
OSSYCALL_HANDLER_DECLARE(do_sys_exit);
OSSYCALL_HANDLER_DECLARE(do_sys_set_thread_area);
OSSYCALL_HANDLER_DECLARE(do_sys_writev);
OSSYCALL_HANDLER_DECLARE(do_sys_write);
OSSYCALL_HANDLER_DECLARE(do_sys_readv);
OSSYCALL_HANDLER_DECLARE(do_sys_read);
OSSYCALL_HANDLER_DECLARE(do_sys_open);
OSSYCALL_HANDLER_DECLARE(do_sys_close);
OSSYCALL_HANDLER_DECLARE(do_sys_ftruncate);
OSSYCALL_HANDLER_DECLARE(do_sys_brk);
OSSYCALL_HANDLER_DECLARE(do_sys_mmap2);
signals:
void char_written(int fd, unsigned int val);
void rx_byte_pool(int fd, unsigned int &data, bool &available);
private:
enum FdMapping {
FD_UNUSED = -1,
FD_INVALID = -1,
FD_TERMINAL = -2,
};
std::int32_t write_mem(machine::MemoryAccess *mem, std::uint32_t addr,
const QVector<std::uint8_t> &data, std::uint32_t count);
std::int32_t read_mem(machine::MemoryAccess *mem, std::uint32_t addr,
QVector<std::uint8_t> &data, std::uint32_t count);
std::int32_t write_io(int fd, const QVector<std::uint8_t> &data, std::uint32_t count);
std::int32_t read_io(int fd, QVector<std::uint8_t> &data, std::uint32_t count, bool add_nl_at_eof);
int allocate_fd(int val = FD_UNUSED);
int file_open(QString fname, int flags, int mode);
int targetfd_to_fd(int targetfd);
void close_fd(int targetfd);
QString filepath_to_host(QString path);
QVector<int> fd_mapping;
std::uint32_t brk_limit;
std::uint32_t anonymous_base;
std::uint32_t anonymous_last;
bool known_syscall_stop;
bool unknown_syscall_stop;
QString fs_root;
};
#undef OSSYCALL_HANDLER_DECLARE
}
#endif // OSSYCALL_H
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