x86_64: prepare shared lib/thunk.S

Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: Ingo Molnar <mingo@elte.hu>

diff --git a/arch/x86_64/lib/Makefile b/arch/x86_64/lib/Makefile
index c943271..0ac0033 100644 (file)
--- a/arch/x86_64/lib/Makefile
+++ b/arch/x86_64/lib/Makefile
@@ -9,5 +9,5 @@ obj-$(CONFIG_SMP)       += msr-on-cpu.o
 
 lib-y := csum-partial.o csum-copy.o csum-wrappers.o delay.o \
        usercopy.o getuser.o putuser.o  \
-       thunk.o clear_page.o copy_page.o bitstr.o bitops.o
+       thunk_64.o clear_page.o copy_page.o bitstr.o bitops.o
 lib-y += memcpy.o memmove.o memset.o copy_user.o rwlock.o copy_user_nocache.o

diff --git a/arch/x86_64/lib/thunk.S b/arch/x86_64/lib/thunk.S
deleted file mode 100644 (file)
index 55e586d..0000000
--- a/arch/x86_64/lib/thunk.S
+++ /dev/null
@@ -1,67 +0,0 @@
-/*
- * Save registers before calling assembly functions. This avoids
- * disturbance of register allocation in some inline assembly constructs.
- * Copyright 2001,2002 by Andi Kleen, SuSE Labs.
- * Subject to the GNU public license, v.2. No warranty of any kind.
- */
-
-       #include <linux/linkage.h>
-       #include <asm/dwarf2.h>
-       #include <asm/calling.h>                        
-       #include <asm/rwlock.h>
-               
-       /* rdi: arg1 ... normal C conventions. rax is saved/restored. */        
-       .macro thunk name,func
-       .globl \name
-\name: 
-       CFI_STARTPROC
-       SAVE_ARGS
-       call \func
-       jmp  restore
-       CFI_ENDPROC
-       .endm
-
-       /* rdi: arg1 ... normal C conventions. rax is passed from C. */         
-       .macro thunk_retrax name,func
-       .globl \name
-\name: 
-       CFI_STARTPROC
-       SAVE_ARGS
-       call \func
-       jmp  restore_norax
-       CFI_ENDPROC
-       .endm
-       
-
-       .section .sched.text
-#ifdef CONFIG_RWSEM_XCHGADD_ALGORITHM
-       thunk rwsem_down_read_failed_thunk,rwsem_down_read_failed
-       thunk rwsem_down_write_failed_thunk,rwsem_down_write_failed
-       thunk rwsem_wake_thunk,rwsem_wake
-       thunk rwsem_downgrade_thunk,rwsem_downgrade_wake
-#endif 
-       
-       thunk __down_failed,__down
-       thunk_retrax __down_failed_interruptible,__down_interruptible
-       thunk_retrax __down_failed_trylock,__down_trylock
-       thunk __up_wakeup,__up
-
-#ifdef CONFIG_TRACE_IRQFLAGS
-       thunk trace_hardirqs_on_thunk,trace_hardirqs_on
-       thunk trace_hardirqs_off_thunk,trace_hardirqs_off
-#endif
-       
-       /* SAVE_ARGS below is used only for the .cfi directives it contains. */
-       CFI_STARTPROC
-       SAVE_ARGS
-restore:
-       RESTORE_ARGS
-       ret     
-       CFI_ENDPROC
-       
-       CFI_STARTPROC
-       SAVE_ARGS
-restore_norax: 
-       RESTORE_ARGS 1
-       ret
-       CFI_ENDPROC

diff --git a/arch/x86_64/lib/thunk_64.S b/arch/x86_64/lib/thunk_64.S
new file mode 100644 (file)
index 0000000..55e586d
--- /dev/null
+++ b/arch/x86_64/lib/thunk_64.S
@@ -0,0 +1,67 @@
+/*
+ * Save registers before calling assembly functions. This avoids
+ * disturbance of register allocation in some inline assembly constructs.
+ * Copyright 2001,2002 by Andi Kleen, SuSE Labs.
+ * Subject to the GNU public license, v.2. No warranty of any kind.
+ */
+
+       #include <linux/linkage.h>
+       #include <asm/dwarf2.h>
+       #include <asm/calling.h>                        
+       #include <asm/rwlock.h>
+               
+       /* rdi: arg1 ... normal C conventions. rax is saved/restored. */        
+       .macro thunk name,func
+       .globl \name
+\name: 
+       CFI_STARTPROC
+       SAVE_ARGS
+       call \func
+       jmp  restore
+       CFI_ENDPROC
+       .endm
+
+       /* rdi: arg1 ... normal C conventions. rax is passed from C. */         
+       .macro thunk_retrax name,func
+       .globl \name
+\name: 
+       CFI_STARTPROC
+       SAVE_ARGS
+       call \func
+       jmp  restore_norax
+       CFI_ENDPROC
+       .endm
+       
+
+       .section .sched.text
+#ifdef CONFIG_RWSEM_XCHGADD_ALGORITHM
+       thunk rwsem_down_read_failed_thunk,rwsem_down_read_failed
+       thunk rwsem_down_write_failed_thunk,rwsem_down_write_failed
+       thunk rwsem_wake_thunk,rwsem_wake
+       thunk rwsem_downgrade_thunk,rwsem_downgrade_wake
+#endif 
+       
+       thunk __down_failed,__down
+       thunk_retrax __down_failed_interruptible,__down_interruptible
+       thunk_retrax __down_failed_trylock,__down_trylock
+       thunk __up_wakeup,__up
+
+#ifdef CONFIG_TRACE_IRQFLAGS
+       thunk trace_hardirqs_on_thunk,trace_hardirqs_on
+       thunk trace_hardirqs_off_thunk,trace_hardirqs_off
+#endif
+       
+       /* SAVE_ARGS below is used only for the .cfi directives it contains. */
+       CFI_STARTPROC
+       SAVE_ARGS
+restore:
+       RESTORE_ARGS
+       ret     
+       CFI_ENDPROC
+       
+       CFI_STARTPROC
+       SAVE_ARGS
+restore_norax: 
+       RESTORE_ARGS 1
+       ret
+       CFI_ENDPROC