Donate to e Foundation | Murena handsets with /e/OS | Own a part of Murena! Learn more

Commit 5f1d919a authored by Jan Beulich's avatar Jan Beulich Committed by Thomas Gleixner
Browse files

x86: Improve cmpxchg8b_emu.S 



- don't include unneeded headers
- drop redundant entry point label
- complete unwind annotations
- use .L prefix on local labels to not clutter the symbol table

Signed-off-by: default avatarJan Beulich <jbeulich@suse.com>
Link: http://lkml.kernel.org/r/5422917E0200007800038081@mail.emea.novell.com


Signed-off-by: default avatarThomas Gleixner <tglx@linutronix.de>
parent 3f635721

arch/x86/lib/cmpxchg8b_emu.S

+9 −11
Original line number Diff line number Diff line
@@ -7,11 +7,8 @@ 
 */



#include <linux/linkage.h>

#include <asm/alternative-asm.h>

#include <asm/frame.h>

#include <asm/dwarf2.h>





.text



/*
@@ -30,27 +27,28 @@ CFI_STARTPROC 
# set the whole ZF thing (caller will just compare

# eax:edx with the expected value)

#

cmpxchg8b_emu:

	pushfl

	pushfl_cfi

	cli



	cmpl  (%esi), %eax

	jne not_same

	jne .Lnot_same

	cmpl 4(%esi), %edx

	jne half_same

	jne .Lhalf_same



	movl %ebx,  (%esi)

	movl %ecx, 4(%esi)



	popfl

	CFI_REMEMBER_STATE

	popfl_cfi

	ret



 not_same:

	CFI_RESTORE_STATE

.Lnot_same:

	movl  (%esi), %eax

 half_same:

.Lhalf_same:

	movl 4(%esi), %edx



	popfl

	popfl_cfi

	ret



CFI_ENDPROC