criu: arch, x86 -- Rename registers mode

@gpregs_case is a bit vague name, lets
define traditional @mode here.
Signed-off-by: Cyrill Gorcunov <gorcunov@openvz.org>
Signed-off-by: Pavel Emelyanov <xemul@virtuozzo.com>
Signed-off-by: Andrei Vagin <avagin@virtuozzo.com>

criu/arch/x86/crtools.c

@@ -317,7 +317,7 @@ static int save_task_regs(CoreEntry *core,
 		assign_reg(gpregs, regs->compat, ss);
 		gpregs->mode = USER_X86_REGS_MODE__COMPAT;
 	}
-	gpregs->has_gpregs_case = true;
+	gpregs->has_mode = true;
 
 	if (!fpregs)
 		return 0;
@@ -701,15 +701,15 @@ static void restore_native_gpregs(struct rt_sigframe *f, UserX86RegsEntry *r)
 
 int restore_gpregs(struct rt_sigframe *f, UserX86RegsEntry *r)
 {
-	switch (r->gpregs_case) {
-		case USER_X86_REGS_CASE_T__NATIVE:
+	switch (r->mode) {
+		case USER_X86_REGS_MODE__NATIVE:
 			restore_native_gpregs(f, r);
 			break;
-		case USER_X86_REGS_CASE_T__COMPAT:
+		case USER_X86_REGS_MODE__COMPAT:
 			restore_compat_gpregs(f, r);
 			break;
 		default:
-			pr_err("Can't prepare rt_sigframe: regs_case corrupt\n");
+			pr_err("Can't prepare rt_sigframe: registers mode corrupted (%d)\n", r->mode);
 			return -1;
 	}
 	return 0;

images/core-x86.proto

@@ -2,7 +2,7 @@ syntax = "proto2";
 
 import "opts.proto";
 
-enum user_x86_regs_case_t {
+enum user_x86_regs_mode {
 	NATIVE = 1;
 	COMPAT = 2;
 }
@@ -36,7 +36,7 @@ message user_x86_regs_entry {
 	required uint64			es		= 25;
 	required uint64			fs		= 26;
 	required uint64			gs		= 27;
-	optional user_x86_regs_case_t	gpregs_case	= 28 [default = NATIVE];
+	optional user_x86_regs_mode	mode		= 28 [default = NATIVE];
 }
 
 message user_x86_xsave_entry {