Create fimrware/asm directory for assembly optimized stuff.

This dir is suitable for stuff that doesn't fit the target tree, e.g. because
it also builds on hosted or otherwise. It also has a generic subfolder for
fallback C implementations so that not all archs need to provide asm files.

SOURCES should only contain "foo.c" where foo.c includes the specific
<arch>/foo.c files from the subdirs using the preprocessor. This way automatic
selection of asm versions or generic C verion is possible.

For the start, the thread support files are moved, since ASM threads can
be used on hosted platforms as well. Since core_sleep() remains platform
specific it's moved to the corresponding system.h headers.

Change-Id: Iebff272f3407a6eaafeb7656ceb0ae9eca3f7cb9

1 files changed, 57 insertions, 0 deletions

diff --git a/firmware/asm/thread.h b/firmware/asm/thread.h
new file mode 100644
index 0000000000..9bdff3881e
--- /dev/null
+++ b/firmware/asm/thread.h
@@ -0,0 +1,57 @@
+/***************************************************************************
+ *             __________               __   ___.
+ *   Open      \______   \ ____   ____ |  | _\_ |__   _______  ___
+ *   Source     |       _//  _ \_/ ___\|  |/ /| __ \ /  _ \  \/  /
+ *   Jukebox    |    |   (  <_> )  \___|    < | \_\ (  <_> > <  <
+ *   Firmware   |____|_  /\____/ \___  >__|_ \|___  /\____/__/\_ \
+ *                     \/            \/     \/    \/            \/
+ * $Id$
+ *
+ * Copyright (C) 2002 by Ulf Ralberg
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License
+ * as published by the Free Software Foundation; either version 2
+ * of the License, or (at your option) any later version.
+ *
+ * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY
+ * KIND, either express or implied.
+ *
+ ****************************************************************************/
+
+#ifndef __ASM_THREAD_H__
+#define __ASM_THREAD_H__
+#include "config.h"
+
+#if defined(CPU_ARM)
+  #include "arm/thread.h"
+#elif defined(CPU_COLDFIRE)
+  #include "m68k/thread.h"
+#elif CONFIG_CPU == SH7034
+  #include "sh/thread.h"
+#elif defined(CPU_MIPS)
+  #include "mips/thread.h"
+#else
+
+/* generic thread.h */
+
+struct regs
+{
+    void (*start)(void); /* thread's entry point, or NULL when started */
+    void* uc;            /* host thread handle */
+    uintptr_t sp;        /* Stack pointer, unused */
+    size_t stack_size;   /* stack size, not always used */
+    uintptr_t stack;     /* pointer to start of the stack buffer */
+};
+
+#ifdef HAVE_SIGALTSTACK_THREADS
+  #include <signal.h>
+  /* MINSIGSTKSZ for the OS to deliver the signal + 0x3000 for us */
+  #define DEFAULT_STACK_SIZE (MINSIGSTKSZ+0x3000) /* Bytes */
+#elif defined(HAVE_WIN32_FIBER_THREADS)
+  #define DEFAULT_STACK_SIZE 0x1000 /* Bytes */
+#endif
+
+#endif /* __ASM_THREAD_H__ */
+
+#endif