copied from kernel as it is sanitized now

diff -durN glibc-2.13.orig/glibc-ports-2.13/sysdeps/unix/sysv/linux/m68k/sys/user.h glibc-2.13/glibc-ports-2.13/sysdeps/unix/sysv/linux/m68k/sys/user.h

--- glibc-2.13.orig/glibc-ports-2.13/sysdeps/unix/sysv/linux/m68k/sys/user.h	2009-05-16 10:36:20.000000000 +0200

+++ glibc-2.13/glibc-ports-2.13/sysdeps/unix/sysv/linux/m68k/sys/user.h	2009-11-13 00:50:31.000000000 +0100

@@ -1,3 +1,90 @@

+#ifndef _SYS_USER_H

+#define _SYS_USER_H

+

+/* Core file format: The core file is written in such a way that gdb

+   can understand it and provide useful information to the user (under

+   linux we use the 'trad-core' bfd).  There are quite a number of

+   obstacles to being able to view the contents of the floating point

+   registers, and until these are solved you will not be able to view the

+   contents of them.  Actually, you can read in the core file and look at

+   the contents of the user struct to find out what the floating point

+   registers contain.

+   The actual file contents are as follows:

+   UPAGE: 1 page consisting of a user struct that tells gdb what is present

+   in the file.  Directly after this is a copy of the task_struct, which

+   is currently not used by gdb, but it may come in useful at some point.

+   All of the registers are stored as part of the upage.  The upage should

+   always be only one page.

+   DATA: The data area is stored.  We use current->end_text to

+   current->brk to pick up all of the user variables, plus any memory

+   that may have been malloced.  No attempt is made to determine if a page

+   is demand-zero or if a page is totally unused, we just cover the entire

+   range.  All of the addresses are rounded in such a way that an integral

+   number of pages is written.

+   STACK: We need the stack information in order to get a meaningful

+   backtrace.  We need to write the data from (esp) to

+   current->start_stack, so we round each of these off in order to be able

+   to write an integer number of pages.

+   The minimum core file size is 3 pages, or 12288 bytes.

+*/

+

+struct user_m68kfp_struct {

+	unsigned long  fpregs[8*3];	/* fp0-fp7 registers */

+	unsigned long  fpcntl[3];	/* fp control regs */

+};

+

+/* This is the old layout of "struct pt_regs" as of Linux 1.x, and

+   is still the layout used by user (the new pt_regs doesn't have

+   all registers). */

+struct user_regs_struct {

+	long d1,d2,d3,d4,d5,d6,d7;

+	long a0,a1,a2,a3,a4,a5,a6;

+	long d0;

+	long usp;

+	long orig_d0;

+	short stkadj;

+	short sr;

+	long pc;

+	short fmtvec;

+	short __fill;

+};

+

+

+/* When the kernel dumps core, it starts by dumping the user struct -

+   this will be used by gdb to figure out where the data and stack segments

+   are within the file, and what virtual addresses to use. */

+struct user{

+/* We start with the registers, to mimic the way that "memory" is returned

+   from the ptrace(3,...) function.  */

+  struct user_regs_struct regs;	/* Where the registers are actually stored */

+/* ptrace does not yet supply these.  Someday.... */

+  int u_fpvalid;		/* True if math co-processor being used. */

+                                /* for this mess. Not yet used. */

+  struct user_m68kfp_struct m68kfp; /* Math Co-processor registers. */

+/* The rest of this junk is to help gdb figure out what goes where */

+  unsigned long int u_tsize;	/* Text segment size (pages). */

+  unsigned long int u_dsize;	/* Data segment size (pages). */

+  unsigned long int u_ssize;	/* Stack segment size (pages). */

+  unsigned long start_code;     /* Starting virtual address of text. */

+  unsigned long start_stack;	/* Starting virtual address of stack area.

+				   This is actually the bottom of the stack,

+				   the top of the stack is always found in the

+				   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 */

+				/* the registers. */

+  struct user_m68kfp_struct* u_fpstate;	/* Math Co-processor pointer. */

+  unsigned long magic;		/* To uniquely identify a core file */

+  char u_comm[32];		/* User command that was responsible */

+};

+#define NBPG 4096

+#define UPAGES 1

+#define HOST_TEXT_START_ADDR (u.start_code)

+#define HOST_STACK_END_ADDR (u.start_stack + u.u_ssize * NBPG)

+

+#endif

 /* Copyright (C) 2008, 2010 Free Software Foundation, Inc.

    This file is part of the GNU C Library.

diff -durN glibc-2.13.orig/ports/sysdeps/unix/sysv/linux/m68k/sys/user.h glibc-2.13/ports/sysdeps/unix/sysv/linux/m68k/sys/user.h