x86: use generic register names in struct sigcontext

Switch struct sigcontext (defined in <asm/sigcontext*.h>) to using
register names withut e- or r-prefixes for both 32- and 64-bit x86.
This is intended as a preliminary step in unifying this code between
architectures.

Signed-off-by: H. Peter Anvin <hpa@zytor.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
diff --git a/arch/x86/kernel/asm-offsets_64.c b/arch/x86/kernel/asm-offsets_64.c
index 2e918eb..a054287 100644
--- a/arch/x86/kernel/asm-offsets_64.c
+++ b/arch/x86/kernel/asm-offsets_64.c
@@ -63,15 +63,15 @@
 #undef ENTRY
 #ifdef CONFIG_IA32_EMULATION
 #define ENTRY(entry) DEFINE(IA32_SIGCONTEXT_ ## entry, offsetof(struct sigcontext_ia32, entry))
-	ENTRY(eax);
-	ENTRY(ebx);
-	ENTRY(ecx);
-	ENTRY(edx);
-	ENTRY(esi);
-	ENTRY(edi);
-	ENTRY(ebp);
-	ENTRY(esp);
-	ENTRY(eip);
+	ENTRY(ax);
+	ENTRY(bx);
+	ENTRY(cx);
+	ENTRY(dx);
+	ENTRY(si);
+	ENTRY(di);
+	ENTRY(bp);
+	ENTRY(sp);
+	ENTRY(ip);
 	BLANK();
 #undef ENTRY
 	DEFINE(IA32_RT_SIGFRAME_sigcontext,