add m68k reg.h and user.h

arch/m68k/bits/reg.h

+#undef __WORDSIZE
+#define __WORDSIZE 32
+#define PT_D1 0
+#define PT_D2 1
+#define PT_D3 2
+#define PT_D4 3
+#define PT_D5 4
+#define PT_D6 5
+#define PT_D7 6
+#define PT_A0 7
+#define PT_A1 8
+#define PT_A2 9
+#define PT_A3 10
+#define PT_A4 11
+#define PT_A5 12
+#define PT_A6 13
+#define PT_D0 14
+#define PT_USP 15
+#define PT_ORIG_D0 16
+#define PT_SR 17
+#define PT_PC 18
+
+#if __mcffpu__
+#define PT_FP0 21
+#define PT_FP1 23
+#define PT_FP2 25
+#define PT_FP3 27
+#define PT_FP4 29
+#define PT_FP5 31
+#define PT_FP6 33
+#define PT_FP7 35
+#else
+#define PT_FP0 21
+#define PT_FP1 24
+#define PT_FP2 27
+#define PT_FP3 30
+#define PT_FP4 33
+#define PT_FP5 36
+#define PT_FP6 39
+#define PT_FP7 42
+#endif
+
+#define PT_FPCR 45
+#define PT_FPSR 46
+#define PT_FPIAR 47

arch/m68k/bits/user.h

+#undef __WORDSIZE
+#define __WORDSIZE 32
+
+struct user_m68kfp_struct {
+	unsigned long fpregs[24], fpcntl[3];
+};
+
+struct user_regs_struct {
+	long d1, d2, d3, d4, d5, d6, d7;
+	long a0, a1, a2, a3, a4, a5, a6;
+	long d0, usp, orig_d0;
+	short stkadj, sr;
+	long pc;
+	short fmtvec, __pad;
+};
+
+struct user {
+	struct user_regs_struct regs;
+	int u_fpvalid;
+	struct user_m68kfp_struct m68kfp;
+	unsigned long u_tsize, u_dsize, u_ssize, start_code, start_stack;
+	long signal;
+	int reserved;
+	unsigned long u_ar0;
+	struct user_m68kfp_struct *u_fpstate;
+	unsigned long magic;
+	char u_comm[32];
+};
+
+#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)