x86_64: ia32entry adjustments

Consolidate the three 32-bit system call entry points so that they all
treat registers in similar ways.
Signed-off-by: Jan Beulich <jbeulich@novell.com>
Signed-off-by: Andi Kleen <ak@suse.de>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

arch/x86_64/ia32/ia32entry.S

@@ -104,7 +104,7 @@ ENTRY(ia32_sysenter_target)
 	pushq	%rax
 	CFI_ADJUST_CFA_OFFSET 8
 	cld
-	SAVE_ARGS 0,0,0
+	SAVE_ARGS 0,0,1
  	/* no need to do an access_ok check here because rbp has been
  	   32bit zero extended */ 
 1:	movl	(%rbp),%r9d
@@ -294,7 +294,7 @@ ia32_badarg:
  */ 				
 
 ENTRY(ia32_syscall)
-	CFI_STARTPROC	simple
+	CFI_STARTPROC32	simple
 	CFI_SIGNAL_FRAME
 	CFI_DEF_CFA	rsp,SS+8-RIP
 	/*CFI_REL_OFFSET	ss,SS-RIP*/
@@ -330,6 +330,7 @@ ia32_sysret:
 
 ia32_tracesys:			 
 	SAVE_REST
+	CLEAR_RREGS
 	movq $-ENOSYS,RAX(%rsp)	/* really needed? */
 	movq %rsp,%rdi        /* &pt_regs -> arg1 */
 	call syscall_trace_enter