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* Initial version of subset of SPIM system calls.Pavel Pisa2019-03-12
| | | | Signed-off-by: Pavel Pisa <pisa@cmp.felk.cvut.cz>
* Updated read and write, added open, close, ftruncate syscalls and fs_root ↵Pavel Pisa2019-03-09
| | | | | | | | | | | option. When operating system emulation root directory (fs_root) are selected then open() syscall opens real host system files in this limited subtree. When fs_root is not set then console is mapped to all read, write, open and close calls. Signed-off-by: Pavel Pisa <pisa@cmp.felk.cvut.cz>
* Enable configuration of syscalls emulation and stop on exception.Pavel Pisa2019-03-06
| | | | Signed-off-by: Pavel Pisa <pisa@cmp.felk.cvut.cz>
* Simple serial port receive implementation.Pavel Pisa2019-02-25
| | | | | | | | | Simple polled mode serial port input implemented for serial port peripheral and for read and readv system calls. When end of input character reserve is reached for read/readv, newline is automatically appended. Signed-off-by: Pavel Pisa <pisa@cmp.felk.cvut.cz>
* System calls stubs for brk and mmap2.Pavel Pisa2019-02-15
| | | | Signed-off-by: Pavel Pisa <pisa@cmp.felk.cvut.cz>
* Implement write syscall and signal written characters to terminal.Pavel Pisa2019-02-14
| | | | Signed-off-by: Pavel Pisa <pisa@cmp.felk.cvut.cz>
* Implemented sys_set_thread_area and sys_writev syscalls.Pavel Pisa2019-02-14
| | | | | | | The example Linux program compiled against musl library reaches main and displays printf output. Signed-off-by: Pavel Pisa <pisa@cmp.felk.cvut.cz>
* Initial attempt to as operating system syscall handler.Pavel Pisa2019-02-13
Signed-off-by: Pavel Pisa <pisa@cmp.felk.cvut.cz>
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