X-Git-Url: https://git.saurik.com/apple/xnu.git/blobdiff_plain/21362eb3e66fd2c787aee132bce100a44d71a99c..4452a7af2eac33dbad800bcc91f2399d62c18f53:/bsd/sys/user.h?ds=sidebyside

diff --git a/bsd/sys/user.h b/bsd/sys/user.h
index 4a2278ce0..636dac0e5 100644
--- a/bsd/sys/user.h
+++ b/bsd/sys/user.h
@@ -88,15 +88,15 @@
  *	Per-thread U area.
  */
 struct uthread {
-	int	*uu_ar0;		/* address of users saved R0 */
-
 	/* syscall parameters, results and catches */
 	u_int64_t uu_arg[8]; /* arguments to current system call */
 	int	*uu_ap;			/* pointer to arglist */
-    int uu_rval[2];
+        int uu_rval[2];
 
 	/* thread exception handling */
+	int	uu_exception;
 	int	uu_code;			/* ``code'' to trap */
+	int	uu_subcode;
 	char uu_cursig;			/* p_cursig for exc. */
 	/* support for select - across system calls */
 	struct _select {
@@ -157,7 +157,7 @@ struct uthread {
 	struct ucred	*uu_ucred;		/* per thread credential */
         int		uu_defer_reclaims;
         vnode_t		uu_vreclaims;
-
+		struct user_sigaltstack uu_sigstk;
 #ifdef JOE_DEBUG
         int		uu_iocount;
         int		uu_vpindex;
@@ -174,6 +174,7 @@ typedef struct uthread * uthread_t;
 #define UT_CANCEL	0x00000008             /* thread marked for cancel */
 #define UT_CANCELED	0x00000010            /* thread cancelled */
 #define UT_CANCELDISABLE 0x00000020            /* thread cancel disabled */
+#define UT_ALTSTACK 0x00000040  /* this thread has alt stack for signals */
 
 #define	UT_VFORK	0x02000000	/* thread has vfork children */
 #define	UT_SETUID	0x04000000	/* thread is settugid() */