read syscall now behaves like readline instead of read

README.md

@@ -21,6 +21,7 @@ Hello world
 Program exited with code 0
 ```
 
+The [`read` syscall](docs/syscalls.md) defaults to readline behaviour. Reading "true chunks" (ignoring newlines) is currently not supported.  
 
 See the docs on [asembly](docs/assembly.md) for more detail on how to write assembly code for this emulator.
 See the [list of implemented syscalls](docs/syscalls.md) for more details on how to syscall.

riscemu/Syscall.py

@@ -75,7 +75,7 @@ class SyscallInterface:
             scall.registers.set('a0', -1)
             return
 
-        chars = self.open_files[fileno].read(size)
+        chars = self.open_files[fileno].readline(size)
         try:
             data = bytearray(chars, 'ascii')
             scall.cpu.mmu.write(addr, len(data), data)