parasite: convert sigframe to u64

Sigframe pointer should be fixed size.
Convert members of rt_sigframe_ia32 to fixed-size.
After this patch dumping of compatible tasks works.

Cc: Cyrill Gorcunov <gorcunov@openvz.org>
Signed-off-by: Dmitry Safonov <dsafonov@virtuozzo.com>
Signed-off-by: Pavel Emelyanov <xemul@virtuozzo.com>

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

@@ -93,10 +93,10 @@ typedef struct {
 
 	union {
 		struct xsave_struct	xsave;
-		unsigned char		__pad[sizeof(struct xsave_struct) + FP_XSTATE_MAGIC2_SIZE];
+		u8		__pad[sizeof(struct xsave_struct) + FP_XSTATE_MAGIC2_SIZE];
 	};
 
-	bool has_fpu;
+	u8 has_fpu;
 } fpu_state_t;
 
 #endif /* __CR_ASM_FPU_H__ */

criu/include/parasite.h

@@ -71,7 +71,7 @@ struct parasite_init_args {
 
 	int			log_level;
 
-	struct rt_sigframe	*sigframe;
+	u64			sigframe; /* pointer to sigframe */
 
 	void			*sigreturn_addr;
 	futex_t			daemon_connected;

criu/parasite-syscall.c

@@ -504,7 +504,7 @@ static int parasite_init_daemon(struct parasite_ctl *ctl, struct ns_id *net)
 
 	args = parasite_args(ctl, struct parasite_init_args);
 
-	args->sigframe = ctl->rsigframe;
+	args->sigframe = (uintptr_t)ctl->rsigframe;
 	args->log_level = log_get_loglevel();
 
 	futex_set(&args->daemon_connected, 0);

criu/pie/parasite.c

@@ -792,7 +792,7 @@ static noinline __used int parasite_init_daemon(void *data)
 	int ret;
 
 	args->sigreturn_addr = fini_sigreturn;
-	sigframe = args->sigframe;
+	sigframe = (void*)(uintptr_t)args->sigframe;
 
 	ret = tsock = sys_socket(PF_UNIX, SOCK_SEQPACKET, 0);
 	if (tsock < 0) {