Changeset 28a5ebd in mainline for kernel/arch/sparc64

Timestamp:

2020-06-18T15:39:50Z (6 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functions has been replaced by our custom putuchar(char32_t) functions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.

Location:

kernel/arch/sparc64/src

Files:

• asm.S (modified) (1 diff)
• drivers/niagara.c (modified) (2 diffs)

kernel/arch/sparc64/src/asm.S

@@ -189 +189 @@
         mov %g0, %o0  /* return 0 on failure */
 
-FUNCTION_BEGIN(early_putwchar)
+FUNCTION_BEGIN(early_putuchar)
         retl
         nop
-FUNCTION_END(early_putwchar)
+FUNCTION_END(early_putuchar)

kernel/arch/sparc64/src/drivers/niagara.c

@@ -57 +57 @@
 static niagara_instance_t *instance = NULL;
 
-static void niagara_putwchar(outdev_t *, const wchar_t);
+static void niagara_putuchar(outdev_t *, const char32_t);
 
 /** Character device operations */
 static outdev_operations_t niagara_ops = {
-        .write = niagara_putwchar,
+        .write = niagara_putuchar,
         .redraw = NULL,
         .scroll_up = NULL,
@@ -103 +103 @@
 
 /** Write a single character to the standard output. */
-static void niagara_putwchar(outdev_t *dev, wchar_t ch)
+static void niagara_putuchar(outdev_t *dev, char32_t ch)
 {
         if ((!outbuf_parea.mapped) || (console_override)) {