asm: move ksigfillset to non-arch header

ksigfillset is the same for all architectures and
here is no reasons to duplicate the same code many times.

In addition, this patch addes ksigemptyset and ksigaddset.
They will be used in the next patch.
Signed-off-by: Andrei Vagin <avagin@virtuozzo.com>
Reviewed-by: Dmitry Safonov <dsafonov@virtuozzo.com>
Signed-off-by: Pavel Emelyanov <xemul@virtuozzo.com>

criu/arch/aarch64/include/asm/types.h

@@ -29,13 +29,6 @@ typedef struct {
 	unsigned long sig[_KNSIG_WORDS];
 } k_rtsigset_t;
 
-static inline void ksigfillset(k_rtsigset_t *set)
-{
-	int i;
-	for (i = 0; i < _KNSIG_WORDS; i++)
-		set->sig[i] = (unsigned long)-1;
-}
-
 #define SA_RESTORER	0x00000000
 
 typedef struct {

criu/arch/arm/include/asm/types.h

@@ -30,13 +30,6 @@ typedef struct {
 	unsigned long sig[_KNSIG_WORDS];
 } k_rtsigset_t;
 
-static inline void ksigfillset(k_rtsigset_t *set)
-{
-	int i;
-	for (i = 0; i < _KNSIG_WORDS; i++)
-		set->sig[i] = (unsigned long)-1;
-}
-
 #define SA_RESTORER	0x04000000
 
 typedef struct {

criu/arch/ppc64/include/asm/types.h

@@ -30,13 +30,6 @@ typedef struct {
         uint64_t sig[_KNSIG_WORDS];
 } k_rtsigset_t;
 
-static inline void ksigfillset(k_rtsigset_t *set)
-{
-        int i;
-        for (i = 0; i < _KNSIG_WORDS; i++)
-                set->sig[i] = (unsigned long)-1;
-}
-
 /* Copied from the Linux kernel arch/powerpc/include/uapi/asm/signal.h */
 #define SA_RESTORER     0x04000000U
 

criu/arch/x86/include/asm/types.h

@@ -31,13 +31,6 @@ typedef struct {
 	unsigned long sig[_KNSIG_WORDS];
 } k_rtsigset_t;
 
-static inline void ksigfillset(k_rtsigset_t *set)
-{
-	int i;
-	for (i = 0; i < _KNSIG_WORDS; i++)
-		set->sig[i] = (unsigned long)-1;
-}
-
 #define SA_RESTORER	0x04000000
 
 typedef struct {

criu/include/signal.h

+#ifndef __CR_SIGNAL_H__
+#define __CR_SIGNAL_H__
+#include "asm/types.h"
+
+static inline void ksigfillset(k_rtsigset_t *set)
+{
+	int i;
+	for (i = 0; i < _KNSIG_WORDS; i++)
+		set->sig[i] = (unsigned long)-1;
+}
+
+static inline void ksigemptyset(k_rtsigset_t *set)
+{
+	int i;
+	for (i = 0; i < _KNSIG_WORDS; i++)
+		set->sig[i] = 0;
+}
+
+static inline void ksigaddset(k_rtsigset_t *set, int _sig)
+{
+	int sig = _sig - 1;
+	set->sig[sig / _NSIG_BPW] = 1 << (sig % _NSIG_BPW);
+}
+#endif

criu/parasite-syscall.c

@@ -30,6 +30,7 @@
 #include "aio.h"
 #include "fault-injection.h"
 #include "syscall-codes.h"
+#include "signal.h"
 
 #include <string.h>
 #include <stdlib.h>

criu/pie/restorer.c

@@ -21,6 +21,7 @@
 #include "asm/string.h"
 #include "asm/types.h"
 #include "syscall.h"
+#include "signal.h"
 #include "config.h"
 #include "prctl.h"
 #include "log.h"