Changeset 28a5ebd in mainline for kernel/genarch/src/drivers/ns16550/ns16550.c

Timestamp:

2020-06-18T15:39:50Z (4 years ago)

Author:

Martin Decky <martin@…>

Branches:

lfn, master, serial, ticket/834-toolchain-update, topic/msim-upgrade, topic/simplify-dev-export

Children:

ce52c333

Parents:

4f663f3e

Message:

Use char32_t instead of wchat_t to represent UTF-32 strings

The intention of the native HelenOS string API has been always to
support Unicode in the UTF-8 and UTF-32 encodings as the sole character
representations and ignore the obsolete mess of older single-byte and
multibyte character encodings. Before C11, the wchar_t type has been
slightly misused for the purpose of the UTF-32 strings. The newer
char32_t type is obviously a much more suitable option. The standard
defines char32_t as uint_least32_t, thus we can take the liberty to fix
it to uint32_t.

To maintain compatilibity with the C Standard, the putwchar(wchar_t)
functions has been replaced by our custom putuchar(char32_t) functions
where appropriate.

File:

• kernel/genarch/src/drivers/ns16550/ns16550.c (modified) (2 diffs)

kernel/genarch/src/drivers/ns16550/ns16550.c

@@ -112 +112 @@
 }
 
-static void ns16550_putwchar(outdev_t *dev, wchar_t ch)
+static void ns16550_putuchar(outdev_t *dev, char32_t ch)
 {
         ns16550_instance_t *instance = (ns16550_instance_t *) dev->data;
@@ -128 +128 @@
 
 static outdev_operations_t ns16550_ops = {
-        .write = ns16550_putwchar,
+        .write = ns16550_putuchar,
         .redraw = NULL
 };