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authorSam Ravnborg <sam@ravnborg.org>2008-07-27 23:00:59 +0200
committerSam Ravnborg <sam@ravnborg.org>2008-07-27 23:00:59 +0200
commita439fe51a1f8eb087c22dd24d69cebae4a3addac (patch)
treee32d1fa97a220ab598d8ab364205817c5bf2bd6f /arch/sparc/include/asm/current.h
parent837b41b5de356aa67abb2cadb5eef3efc7776f91 (diff)
downloadop-kernel-dev-a439fe51a1f8eb087c22dd24d69cebae4a3addac.zip
op-kernel-dev-a439fe51a1f8eb087c22dd24d69cebae4a3addac.tar.gz
sparc, sparc64: use arch/sparc/include
The majority of this patch was created by the following script: *** ASM=arch/sparc/include/asm mkdir -p $ASM git mv include/asm-sparc64/ftrace.h $ASM git rm include/asm-sparc64/* git mv include/asm-sparc/* $ASM sed -ie 's/asm-sparc64/asm/g' $ASM/* sed -ie 's/asm-sparc/asm/g' $ASM/* *** The rest was an update of the top-level Makefile to use sparc for header files when sparc64 is being build. And a small fixlet to pick up the correct unistd.h from sparc64 code. Signed-off-by: Sam Ravnborg <sam@ravnborg.org>
Diffstat (limited to 'arch/sparc/include/asm/current.h')
-rw-r--r--arch/sparc/include/asm/current.h34
1 files changed, 34 insertions, 0 deletions
diff --git a/arch/sparc/include/asm/current.h b/arch/sparc/include/asm/current.h
new file mode 100644
index 0000000..10a0df5
--- /dev/null
+++ b/arch/sparc/include/asm/current.h
@@ -0,0 +1,34 @@
+/* include/asm/current.h
+ *
+ * Copyright (C) 1999 IBM Deutschland Entwicklung GmbH, IBM Corporation
+ * Copyright (C) 2002 Pete Zaitcev (zaitcev@yahoo.com)
+ * Copyright (C) 2007 David S. Miller (davem@davemloft.net)
+ *
+ * Derived from "include/asm-s390/current.h" by
+ * Martin Schwidefsky (schwidefsky@de.ibm.com)
+ * Derived from "include/asm-i386/current.h"
+*/
+#ifndef _SPARC_CURRENT_H
+#define _SPARC_CURRENT_H
+
+#include <linux/thread_info.h>
+
+#ifdef CONFIG_SPARC64
+register struct task_struct *current asm("g4");
+#endif
+
+#ifdef CONFIG_SPARC32
+/* We might want to consider using %g4 like sparc64 to shave a few cycles.
+ *
+ * Two stage process (inline + #define) for type-checking.
+ * We also obfuscate get_current() to check if anyone used that by mistake.
+ */
+struct task_struct;
+static inline struct task_struct *__get_current(void)
+{
+ return current_thread_info()->task;
+}
+#define current __get_current()
+#endif
+
+#endif /* !(_SPARC_CURRENT_H) */
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