diff --git a/arch/x86/ia32/ia32_aout.c b/arch/x86/ia32/ia32_aout.c
index e4c1207..58cccb6 100644
--- a/arch/x86/ia32/ia32_aout.c
+++ b/arch/x86/ia32/ia32_aout.c
@@ -172,8 +172,7 @@
 	has_dumped = 1;
 	current->flags |= PF_DUMPCORE;
 	strncpy(dump.u_comm, current->comm, sizeof(current->comm));
-	dump.u_ar0 = (u32)(((unsigned long)(&dump.regs)) -
-			   ((unsigned long)(&dump)));
+	dump.u_ar0 = offsetof(struct user32, regs);
 	dump.signal = signr;
 	dump_thread32(regs, &dump);
 
diff --git a/fs/binfmt_aout.c b/fs/binfmt_aout.c
index 7596e1e..7f65e71 100644
--- a/fs/binfmt_aout.c
+++ b/fs/binfmt_aout.c
@@ -115,7 +115,7 @@
 	current->flags |= PF_DUMPCORE;
        	strncpy(dump.u_comm, current->comm, sizeof(dump.u_comm));
 #ifndef __sparc__
-	dump.u_ar0 = (void *)(((unsigned long)(&dump.regs)) - ((unsigned long)(&dump)));
+	dump.u_ar0 = offsetof(struct user, regs);
 #endif
 	dump.signal = signr;
 	dump_thread(regs, &dump);
diff --git a/include/asm-alpha/user.h b/include/asm-alpha/user.h
index 7e417fc..a4eb6a4 100644
--- a/include/asm-alpha/user.h
+++ b/include/asm-alpha/user.h
@@ -39,7 +39,7 @@
 	unsigned long	start_data;		/* data starting address */
 	unsigned long	start_stack;		/* stack starting address */
 	long int	signal;			/* signal causing core dump */
-	struct regs *	u_ar0;			/* help gdb find registers */
+	unsigned long	u_ar0;			/* help gdb find registers */
 	unsigned long	magic;			/* identifies a core file */
 	char		u_comm[32];		/* user command name */
 };
diff --git a/include/asm-arm/user.h b/include/asm-arm/user.h
index 3e8b0f8..825c1e7 100644
--- a/include/asm-arm/user.h
+++ b/include/asm-arm/user.h
@@ -67,7 +67,7 @@
 				   esp register.  */
   long int signal;     		/* Signal that caused the core dump. */
   int reserved;			/* No longer used */
-  struct pt_regs * u_ar0;	/* Used by gdb to help find the values for */
+  unsigned long u_ar0;		/* Used by gdb to help find the values for */
 				/* the registers. */
   unsigned long magic;		/* To uniquely identify a core file */
   char u_comm[32];		/* User command that was responsible */
diff --git a/include/asm-avr32/user.h b/include/asm-avr32/user.h
index 060fb3a..7e9152f 100644
--- a/include/asm-avr32/user.h
+++ b/include/asm-avr32/user.h
@@ -51,7 +51,7 @@
 	unsigned long	start_data;		/* data starting address */
 	unsigned long	start_stack;		/* stack starting address */
 	long int	signal;			/* signal causing core dump */
-	struct regs *	u_ar0;			/* help gdb find registers */
+	unsigned long	u_ar0;			/* help gdb find registers */
 	unsigned long	magic;			/* identifies a core file */
 	char		u_comm[32];		/* user command name */
 };
diff --git a/include/asm-blackfin/user.h b/include/asm-blackfin/user.h
index abc3462..afe6a0e 100644
--- a/include/asm-blackfin/user.h
+++ b/include/asm-blackfin/user.h
@@ -75,7 +75,7 @@
 					   esp register.  */
 	long int signal;	/* Signal that caused the core dump. */
 	int reserved;		/* No longer used */
-	struct user_regs_struct *u_ar0;
+	unsigned long u_ar0;
 	/* Used by gdb to help find the values for */
 	/* the registers. */
 	unsigned long magic;	/* To uniquely identify a core file */
diff --git a/include/asm-cris/user.h b/include/asm-cris/user.h
index 2538e2a..73e60fc 100644
--- a/include/asm-cris/user.h
+++ b/include/asm-cris/user.h
@@ -38,7 +38,7 @@
 	unsigned long	start_data;		/* data starting address */
 	unsigned long	start_stack;		/* stack starting address */
 	long int	signal;			/* signal causing core dump */
-	struct regs *	u_ar0;			/* help gdb find registers */
+	unsigned long	u_ar0;			/* help gdb find registers */
 	unsigned long	magic;			/* identifies a core file */
 	char		u_comm[32];		/* user command name */
 };
diff --git a/include/asm-h8300/user.h b/include/asm-h8300/user.h
index 6c64f99..14a9e18 100644
--- a/include/asm-h8300/user.h
+++ b/include/asm-h8300/user.h
@@ -62,8 +62,7 @@
 				   esp register.  */
   long int signal;     		/* Signal that caused the core dump. */
   int reserved;			/* No longer used */
-  struct user_regs_struct *u_ar0;
-				/* Used by gdb to help find the values for */
+  unsigned long u_ar0;		/* Used by gdb to help find the values for */
 				/* the registers. */
   unsigned long magic;		/* To uniquely identify a core file */
   char u_comm[32];		/* User command that was responsible */
diff --git a/include/asm-ia64/user.h b/include/asm-ia64/user.h
index 78e5a20..8b98211 100644
--- a/include/asm-ia64/user.h
+++ b/include/asm-ia64/user.h
@@ -44,7 +44,7 @@
 	unsigned long	start_data;		/* data starting address */
 	unsigned long	start_stack;		/* stack starting address */
 	long int	signal;			/* signal causing core dump */
-	struct regs *	u_ar0;			/* help gdb find registers */
+	unsigned long	u_ar0;			/* help gdb find registers */
 	unsigned long	magic;			/* identifies a core file */
 	char		u_comm[32];		/* user command name */
 };
diff --git a/include/asm-m32r/user.h b/include/asm-m32r/user.h
index 035258d..03b3c11 100644
--- a/include/asm-m32r/user.h
+++ b/include/asm-m32r/user.h
@@ -38,7 +38,7 @@
 	unsigned long	start_data;		/* data starting address */
 	unsigned long	start_stack;		/* stack starting address */
 	long int	signal;			/* signal causing core dump */
-	struct regs *	u_ar0;			/* help gdb find registers */
+	unsigned long	u_ar0;			/* help gdb find registers */
 	unsigned long	magic;			/* identifies a core file */
 	char		u_comm[32];		/* user command name */
 };
diff --git a/include/asm-m68k/user.h b/include/asm-m68k/user.h
index 8c56cca..f1f478d 100644
--- a/include/asm-m68k/user.h
+++ b/include/asm-m68k/user.h
@@ -72,8 +72,7 @@
 				   esp register.  */
   long int signal;		/* Signal that caused the core dump. */
   int reserved;			/* No longer used */
-  struct user_regs_struct *u_ar0;
-				/* Used by gdb to help find the values for */
+  unsigned long u_ar0;		/* Used by gdb to help find the values for */
 				/* the registers. */
   struct user_m68kfp_struct* u_fpstate;	/* Math Co-processor pointer. */
   unsigned long magic;		/* To uniquely identify a core file */
diff --git a/include/asm-mips/user.h b/include/asm-mips/user.h
index 89bf8b4..afa83a4 100644
--- a/include/asm-mips/user.h
+++ b/include/asm-mips/user.h
@@ -44,7 +44,7 @@
 	unsigned long	start_data;		/* data starting address */
 	unsigned long	start_stack;		/* stack starting address */
 	long int	signal;			/* signal causing core dump */
-	struct regs *	u_ar0;			/* help gdb find registers */
+	unsigned long	u_ar0;			/* help gdb find registers */
 	unsigned long	magic;			/* identifies a core file */
 	char		u_comm[32];		/* user command name */
 };
diff --git a/include/asm-powerpc/user.h b/include/asm-powerpc/user.h
index ba8dd4c..3fd4545 100644
--- a/include/asm-powerpc/user.h
+++ b/include/asm-powerpc/user.h
@@ -38,7 +38,7 @@
 	unsigned long	start_data;		/* data starting address */
 	unsigned long	start_stack;		/* stack starting address */
 	long int	signal;			/* signal causing core dump */
-	struct regs *	u_ar0;			/* help gdb find registers */
+	unsigned long	u_ar0;			/* help gdb find registers */
 	unsigned long	magic;			/* identifies a core file */
 	char		u_comm[32];		/* user command name */
 };
diff --git a/include/asm-s390/user.h b/include/asm-s390/user.h
index 1dc74ba..1b050e3 100644
--- a/include/asm-s390/user.h
+++ b/include/asm-s390/user.h
@@ -63,8 +63,7 @@
 				   the top of the stack is always found in the
 				   esp register.  */
   long int signal;     		/* Signal that caused the core dump. */
-  struct user_regs_struct *u_ar0;
-				/* Used by gdb to help find the values for */
+  unsigned long u_ar0;		/* Used by gdb to help find the values for */
 				/* the registers. */
   unsigned long magic;		/* To uniquely identify a core file */
   char u_comm[32];		/* User command that was responsible */
diff --git a/include/asm-sh/user.h b/include/asm-sh/user.h
index 1a4f43c..8fd3cf6 100644
--- a/include/asm-sh/user.h
+++ b/include/asm-sh/user.h
@@ -52,7 +52,7 @@
 	unsigned long	start_data;		/* data starting address */
 	unsigned long	start_stack;		/* stack starting address */
 	long int	signal;			/* signal causing core dump */
-	struct regs *	u_ar0;			/* help gdb find registers */
+	unsigned long	u_ar0;			/* help gdb find registers */
 	struct user_fpu_struct* u_fpstate;	/* Math Co-processor pointer */
 	unsigned long	magic;			/* identifies a core file */
 	char		u_comm[32];		/* user command name */
diff --git a/include/asm-v850/user.h b/include/asm-v850/user.h
index be90eea..63cdc56 100644
--- a/include/asm-v850/user.h
+++ b/include/asm-v850/user.h
@@ -38,7 +38,7 @@
 	unsigned long	start_data;		/* data starting address */
 	unsigned long	start_stack;		/* stack starting address */
 	long int	signal;			/* signal causing core dump */
-	struct regs *	u_ar0;			/* help gdb find registers */
+	unsigned long	u_ar0;			/* help gdb find registers */
 	unsigned long	magic;			/* identifies a core file */
 	char		u_comm[32];		/* user command name */
 };
diff --git a/include/asm-x86/user_32.h b/include/asm-x86/user_32.h
index ed8b8fc..6157da6 100644
--- a/include/asm-x86/user_32.h
+++ b/include/asm-x86/user_32.h
@@ -116,7 +116,7 @@
 				   esp register.  */
   long int signal;     		/* Signal that caused the core dump. */
   int reserved;			/* No longer used */
-  struct user_pt_regs * u_ar0;	/* Used by gdb to help find the values for */
+  unsigned long u_ar0;		/* Used by gdb to help find the values for */
 				/* the registers. */
   struct user_i387_struct* u_fpstate;	/* Math Co-processor pointer. */
   unsigned long magic;		/* To uniquely identify a core file */
diff --git a/include/asm-x86/user_64.h b/include/asm-x86/user_64.h
index a5449d4..9636164 100644
--- a/include/asm-x86/user_64.h
+++ b/include/asm-x86/user_64.h
@@ -118,7 +118,7 @@
   long int signal;		/* Signal that caused the core dump. */
   int reserved;			/* No longer used */
   int pad1;
-  struct user_pt_regs * u_ar0;	/* Used by gdb to help find the values for */
+  unsigned long u_ar0;		/* Used by gdb to help find the values for */
 				/* the registers. */
   struct user_i387_struct* u_fpstate;	/* Math Co-processor pointer. */
   unsigned long magic;		/* To uniquely identify a core file */