From bb3871daf6d95101220969dc2634456cf2c503da Mon Sep 17 00:00:00 2001
From: Thomas Gleixner <tglx@linutronix.de>
Date: Thu, 11 Oct 2007 11:13:24 +0200
Subject: i386: prepare shared lib/semaphore.S

Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
---
 arch/i386/lib/Makefile       |   2 +-
 arch/i386/lib/semaphore.S    | 219 -------------------------------------------
 arch/i386/lib/semaphore_32.S | 219 +++++++++++++++++++++++++++++++++++++++++++
 3 files changed, 220 insertions(+), 220 deletions(-)
 delete mode 100644 arch/i386/lib/semaphore.S
 create mode 100644 arch/i386/lib/semaphore_32.S

(limited to 'arch')

diff --git a/arch/i386/lib/Makefile b/arch/i386/lib/Makefile
index 1bd9b85..dce510d 100644
--- a/arch/i386/lib/Makefile
+++ b/arch/i386/lib/Makefile
@@ -4,7 +4,7 @@
 
 
 lib-y = checksum_32.o delay.o usercopy.o getuser.o putuser.o memcpy.o strstr_32.o \
-	bitops.o semaphore.o string_32.o
+	bitops.o semaphore_32.o string_32.o
 
 lib-$(CONFIG_X86_USE_3DNOW) += mmx.o
 
diff --git a/arch/i386/lib/semaphore.S b/arch/i386/lib/semaphore.S
deleted file mode 100644
index c01eb39..0000000
--- a/arch/i386/lib/semaphore.S
+++ /dev/null
@@ -1,219 +0,0 @@
-/*
- * i386 semaphore implementation.
- *
- * (C) Copyright 1999 Linus Torvalds
- *
- * Portions Copyright 1999 Red Hat, Inc.
- *
- *	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.
- *
- * rw semaphores implemented November 1999 by Benjamin LaHaise <bcrl@kvack.org>
- */
-
-#include <linux/linkage.h>
-#include <asm/rwlock.h>
-#include <asm/alternative-asm.i>
-#include <asm/frame.i>
-#include <asm/dwarf2.h>
-
-/*
- * The semaphore operations have a special calling sequence that
- * allow us to do a simpler in-line version of them. These routines
- * need to convert that sequence back into the C sequence when
- * there is contention on the semaphore.
- *
- * %eax contains the semaphore pointer on entry. Save the C-clobbered
- * registers (%eax, %edx and %ecx) except %eax whish is either a return
- * value or just clobbered..
- */
-	.section .sched.text
-ENTRY(__down_failed)
-	CFI_STARTPROC
-	FRAME
-	pushl %edx
-	CFI_ADJUST_CFA_OFFSET 4
-	CFI_REL_OFFSET edx,0
-	pushl %ecx
-	CFI_ADJUST_CFA_OFFSET 4
-	CFI_REL_OFFSET ecx,0
-	call __down
-	popl %ecx
-	CFI_ADJUST_CFA_OFFSET -4
-	CFI_RESTORE ecx
-	popl %edx
-	CFI_ADJUST_CFA_OFFSET -4
-	CFI_RESTORE edx
-	ENDFRAME
-	ret
-	CFI_ENDPROC
-	END(__down_failed)
-
-ENTRY(__down_failed_interruptible)
-	CFI_STARTPROC
-	FRAME
-	pushl %edx
-	CFI_ADJUST_CFA_OFFSET 4
-	CFI_REL_OFFSET edx,0
-	pushl %ecx
-	CFI_ADJUST_CFA_OFFSET 4
-	CFI_REL_OFFSET ecx,0
-	call __down_interruptible
-	popl %ecx
-	CFI_ADJUST_CFA_OFFSET -4
-	CFI_RESTORE ecx
-	popl %edx
-	CFI_ADJUST_CFA_OFFSET -4
-	CFI_RESTORE edx
-	ENDFRAME
-	ret
-	CFI_ENDPROC
-	END(__down_failed_interruptible)
-
-ENTRY(__down_failed_trylock)
-	CFI_STARTPROC
-	FRAME
-	pushl %edx
-	CFI_ADJUST_CFA_OFFSET 4
-	CFI_REL_OFFSET edx,0
-	pushl %ecx
-	CFI_ADJUST_CFA_OFFSET 4
-	CFI_REL_OFFSET ecx,0
-	call __down_trylock
-	popl %ecx
-	CFI_ADJUST_CFA_OFFSET -4
-	CFI_RESTORE ecx
-	popl %edx
-	CFI_ADJUST_CFA_OFFSET -4
-	CFI_RESTORE edx
-	ENDFRAME
-	ret
-	CFI_ENDPROC
-	END(__down_failed_trylock)
-
-ENTRY(__up_wakeup)
-	CFI_STARTPROC
-	FRAME
-	pushl %edx
-	CFI_ADJUST_CFA_OFFSET 4
-	CFI_REL_OFFSET edx,0
-	pushl %ecx
-	CFI_ADJUST_CFA_OFFSET 4
-	CFI_REL_OFFSET ecx,0
-	call __up
-	popl %ecx
-	CFI_ADJUST_CFA_OFFSET -4
-	CFI_RESTORE ecx
-	popl %edx
-	CFI_ADJUST_CFA_OFFSET -4
-	CFI_RESTORE edx
-	ENDFRAME
-	ret
-	CFI_ENDPROC
-	END(__up_wakeup)
-
-/*
- * rw spinlock fallbacks
- */
-#ifdef CONFIG_SMP
-ENTRY(__write_lock_failed)
-	CFI_STARTPROC simple
-	FRAME
-2: 	LOCK_PREFIX
-	addl	$ RW_LOCK_BIAS,(%eax)
-1:	rep; nop
-	cmpl	$ RW_LOCK_BIAS,(%eax)
-	jne	1b
-	LOCK_PREFIX
-	subl	$ RW_LOCK_BIAS,(%eax)
-	jnz	2b
-	ENDFRAME
-	ret
-	CFI_ENDPROC
-	END(__write_lock_failed)
-
-ENTRY(__read_lock_failed)
-	CFI_STARTPROC
-	FRAME
-2: 	LOCK_PREFIX
-	incl	(%eax)
-1:	rep; nop
-	cmpl	$1,(%eax)
-	js	1b
-	LOCK_PREFIX
-	decl	(%eax)
-	js	2b
-	ENDFRAME
-	ret
-	CFI_ENDPROC
-	END(__read_lock_failed)
-
-#endif
-
-#ifdef CONFIG_RWSEM_XCHGADD_ALGORITHM
-
-/* Fix up special calling conventions */
-ENTRY(call_rwsem_down_read_failed)
-	CFI_STARTPROC
-	push %ecx
-	CFI_ADJUST_CFA_OFFSET 4
-	CFI_REL_OFFSET ecx,0
-	push %edx
-	CFI_ADJUST_CFA_OFFSET 4
-	CFI_REL_OFFSET edx,0
-	call rwsem_down_read_failed
-	pop %edx
-	CFI_ADJUST_CFA_OFFSET -4
-	pop %ecx
-	CFI_ADJUST_CFA_OFFSET -4
-	ret
-	CFI_ENDPROC
-	END(call_rwsem_down_read_failed)
-
-ENTRY(call_rwsem_down_write_failed)
-	CFI_STARTPROC
-	push %ecx
-	CFI_ADJUST_CFA_OFFSET 4
-	CFI_REL_OFFSET ecx,0
-	calll rwsem_down_write_failed
-	pop %ecx
-	CFI_ADJUST_CFA_OFFSET -4
-	ret
-	CFI_ENDPROC
-	END(call_rwsem_down_write_failed)
-
-ENTRY(call_rwsem_wake)
-	CFI_STARTPROC
-	decw %dx    /* do nothing if still outstanding active readers */
-	jnz 1f
-	push %ecx
-	CFI_ADJUST_CFA_OFFSET 4
-	CFI_REL_OFFSET ecx,0
-	call rwsem_wake
-	pop %ecx
-	CFI_ADJUST_CFA_OFFSET -4
-1:	ret
-	CFI_ENDPROC
-	END(call_rwsem_wake)
-
-/* Fix up special calling conventions */
-ENTRY(call_rwsem_downgrade_wake)
-	CFI_STARTPROC
-	push %ecx
-	CFI_ADJUST_CFA_OFFSET 4
-	CFI_REL_OFFSET ecx,0
-	push %edx
-	CFI_ADJUST_CFA_OFFSET 4
-	CFI_REL_OFFSET edx,0
-	call rwsem_downgrade_wake
-	pop %edx
-	CFI_ADJUST_CFA_OFFSET -4
-	pop %ecx
-	CFI_ADJUST_CFA_OFFSET -4
-	ret
-	CFI_ENDPROC
-	END(call_rwsem_downgrade_wake)
-
-#endif
diff --git a/arch/i386/lib/semaphore_32.S b/arch/i386/lib/semaphore_32.S
new file mode 100644
index 0000000..c01eb39
--- /dev/null
+++ b/arch/i386/lib/semaphore_32.S
@@ -0,0 +1,219 @@
+/*
+ * i386 semaphore implementation.
+ *
+ * (C) Copyright 1999 Linus Torvalds
+ *
+ * Portions Copyright 1999 Red Hat, Inc.
+ *
+ *	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.
+ *
+ * rw semaphores implemented November 1999 by Benjamin LaHaise <bcrl@kvack.org>
+ */
+
+#include <linux/linkage.h>
+#include <asm/rwlock.h>
+#include <asm/alternative-asm.i>
+#include <asm/frame.i>
+#include <asm/dwarf2.h>
+
+/*
+ * The semaphore operations have a special calling sequence that
+ * allow us to do a simpler in-line version of them. These routines
+ * need to convert that sequence back into the C sequence when
+ * there is contention on the semaphore.
+ *
+ * %eax contains the semaphore pointer on entry. Save the C-clobbered
+ * registers (%eax, %edx and %ecx) except %eax whish is either a return
+ * value or just clobbered..
+ */
+	.section .sched.text
+ENTRY(__down_failed)
+	CFI_STARTPROC
+	FRAME
+	pushl %edx
+	CFI_ADJUST_CFA_OFFSET 4
+	CFI_REL_OFFSET edx,0
+	pushl %ecx
+	CFI_ADJUST_CFA_OFFSET 4
+	CFI_REL_OFFSET ecx,0
+	call __down
+	popl %ecx
+	CFI_ADJUST_CFA_OFFSET -4
+	CFI_RESTORE ecx
+	popl %edx
+	CFI_ADJUST_CFA_OFFSET -4
+	CFI_RESTORE edx
+	ENDFRAME
+	ret
+	CFI_ENDPROC
+	END(__down_failed)
+
+ENTRY(__down_failed_interruptible)
+	CFI_STARTPROC
+	FRAME
+	pushl %edx
+	CFI_ADJUST_CFA_OFFSET 4
+	CFI_REL_OFFSET edx,0
+	pushl %ecx
+	CFI_ADJUST_CFA_OFFSET 4
+	CFI_REL_OFFSET ecx,0
+	call __down_interruptible
+	popl %ecx
+	CFI_ADJUST_CFA_OFFSET -4
+	CFI_RESTORE ecx
+	popl %edx
+	CFI_ADJUST_CFA_OFFSET -4
+	CFI_RESTORE edx
+	ENDFRAME
+	ret
+	CFI_ENDPROC
+	END(__down_failed_interruptible)
+
+ENTRY(__down_failed_trylock)
+	CFI_STARTPROC
+	FRAME
+	pushl %edx
+	CFI_ADJUST_CFA_OFFSET 4
+	CFI_REL_OFFSET edx,0
+	pushl %ecx
+	CFI_ADJUST_CFA_OFFSET 4
+	CFI_REL_OFFSET ecx,0
+	call __down_trylock
+	popl %ecx
+	CFI_ADJUST_CFA_OFFSET -4
+	CFI_RESTORE ecx
+	popl %edx
+	CFI_ADJUST_CFA_OFFSET -4
+	CFI_RESTORE edx
+	ENDFRAME
+	ret
+	CFI_ENDPROC
+	END(__down_failed_trylock)
+
+ENTRY(__up_wakeup)
+	CFI_STARTPROC
+	FRAME
+	pushl %edx
+	CFI_ADJUST_CFA_OFFSET 4
+	CFI_REL_OFFSET edx,0
+	pushl %ecx
+	CFI_ADJUST_CFA_OFFSET 4
+	CFI_REL_OFFSET ecx,0
+	call __up
+	popl %ecx
+	CFI_ADJUST_CFA_OFFSET -4
+	CFI_RESTORE ecx
+	popl %edx
+	CFI_ADJUST_CFA_OFFSET -4
+	CFI_RESTORE edx
+	ENDFRAME
+	ret
+	CFI_ENDPROC
+	END(__up_wakeup)
+
+/*
+ * rw spinlock fallbacks
+ */
+#ifdef CONFIG_SMP
+ENTRY(__write_lock_failed)
+	CFI_STARTPROC simple
+	FRAME
+2: 	LOCK_PREFIX
+	addl	$ RW_LOCK_BIAS,(%eax)
+1:	rep; nop
+	cmpl	$ RW_LOCK_BIAS,(%eax)
+	jne	1b
+	LOCK_PREFIX
+	subl	$ RW_LOCK_BIAS,(%eax)
+	jnz	2b
+	ENDFRAME
+	ret
+	CFI_ENDPROC
+	END(__write_lock_failed)
+
+ENTRY(__read_lock_failed)
+	CFI_STARTPROC
+	FRAME
+2: 	LOCK_PREFIX
+	incl	(%eax)
+1:	rep; nop
+	cmpl	$1,(%eax)
+	js	1b
+	LOCK_PREFIX
+	decl	(%eax)
+	js	2b
+	ENDFRAME
+	ret
+	CFI_ENDPROC
+	END(__read_lock_failed)
+
+#endif
+
+#ifdef CONFIG_RWSEM_XCHGADD_ALGORITHM
+
+/* Fix up special calling conventions */
+ENTRY(call_rwsem_down_read_failed)
+	CFI_STARTPROC
+	push %ecx
+	CFI_ADJUST_CFA_OFFSET 4
+	CFI_REL_OFFSET ecx,0
+	push %edx
+	CFI_ADJUST_CFA_OFFSET 4
+	CFI_REL_OFFSET edx,0
+	call rwsem_down_read_failed
+	pop %edx
+	CFI_ADJUST_CFA_OFFSET -4
+	pop %ecx
+	CFI_ADJUST_CFA_OFFSET -4
+	ret
+	CFI_ENDPROC
+	END(call_rwsem_down_read_failed)
+
+ENTRY(call_rwsem_down_write_failed)
+	CFI_STARTPROC
+	push %ecx
+	CFI_ADJUST_CFA_OFFSET 4
+	CFI_REL_OFFSET ecx,0
+	calll rwsem_down_write_failed
+	pop %ecx
+	CFI_ADJUST_CFA_OFFSET -4
+	ret
+	CFI_ENDPROC
+	END(call_rwsem_down_write_failed)
+
+ENTRY(call_rwsem_wake)
+	CFI_STARTPROC
+	decw %dx    /* do nothing if still outstanding active readers */
+	jnz 1f
+	push %ecx
+	CFI_ADJUST_CFA_OFFSET 4
+	CFI_REL_OFFSET ecx,0
+	call rwsem_wake
+	pop %ecx
+	CFI_ADJUST_CFA_OFFSET -4
+1:	ret
+	CFI_ENDPROC
+	END(call_rwsem_wake)
+
+/* Fix up special calling conventions */
+ENTRY(call_rwsem_downgrade_wake)
+	CFI_STARTPROC
+	push %ecx
+	CFI_ADJUST_CFA_OFFSET 4
+	CFI_REL_OFFSET ecx,0
+	push %edx
+	CFI_ADJUST_CFA_OFFSET 4
+	CFI_REL_OFFSET edx,0
+	call rwsem_downgrade_wake
+	pop %edx
+	CFI_ADJUST_CFA_OFFSET -4
+	pop %ecx
+	CFI_ADJUST_CFA_OFFSET -4
+	ret
+	CFI_ENDPROC
+	END(call_rwsem_downgrade_wake)
+
+#endif
-- 
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