Support for more System Calls

[Rixxc]

This is a feature request to support more system calls in Jasmin.

Currently Jasmin only supports the getrandom system call. For more complex application (e.g. crypto agents) it is necessary to perform systemcalls to interact with the operating system. Desired system calls for a crypto agents are:

• For interaction with the filesystem:
  • open, close
• For interactions with the filesystem and to comunicate with other programs (e.g. via pipes)
  • read, write, (sync?), (lseek?)

[Rixxc]

An example program could look like this:

fn main()
{
    reg int fd, size;
    reg ptr u8[1337] buf;

    fd = #open('testfile', 'r');
    size = #read(fd, buf);
    #close(fd);
    fd = #open('testfile2', 'w');
    size = #write(fd, buf, size);
    #close(fd);
}

[vbgl]

This suggest a new feature request: literal string constants.