/* Macro definitions for GDB on an S390.
   Copyright 2001 Free Software Foundation, Inc.
   Contributed by D.J. Barrow (djbarrow@de.ibm.com,barrow_dj@yahoo.com)
   for IBM Deutschland Entwicklung GmbH, IBM Corporation.

   This file is part of GDB.
   
   This program is free software; you can redistribute it and/or modify
   it under the terms of the GNU General Public License as published by
   the Free Software Foundation; either version 2 of the License, or
   (at your option) any later version.

   This program is distributed in the hope that it will be useful,
   but WITHOUT ANY WARRANTY; without even the implied warranty of
   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
   GNU General Public License for more details.

   You should have received a copy of the GNU General Public License
   along with this program; if not, write to the Free Software
   Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA
   02111-1307, USA.  */

#if !defined(TM_S390_H)
#define TM_S390_H 1

#define S390_NUM_GPRS      (16)
#define S390_GPR_SIZE      REGISTER_SIZE
#define S390_PSW_MASK_SIZE REGISTER_SIZE
#define S390_PSW_ADDR_SIZE REGISTER_SIZE
#define S390_NUM_FPRS      (16)
#define S390_FPR_SIZE      (8)
#define S390_FPC_SIZE      (4)
#define S390_FPC_PAD_SIZE  (4)	/* gcc insists on aligning the fpregs */
#define S390_NUM_CRS       (16)
#define S390_CR_SIZE       REGISTER_SIZE
#define S390_NUM_ACRS      (16)
#define S390_ACR_SIZE      (4)

#define S390_NUM_REGS      (2+S390_NUM_GPRS+S390_NUM_ACRS+S390_NUM_CRS+1+S390_NUM_FPRS)
#define S390_FIRST_ACR     (2+S390_NUM_GPRS)
#define S390_LAST_ACR      (S390_FIRST_ACR+S390_NUM_ACRS-1)
#define S390_FIRST_CR      (S390_FIRST_ACR+S390_NUM_ACRS)
#define S390_LAST_CR       (S390_FIRST_CR+S390_NUM_CRS-1)

#define S390_PSWM_REGNUM    0
#define S390_PC_REGNUM      1
#define	S390_GP0_REGNUM     2	/* GPR register 0 */
#define S390_GP_LAST_REGNUM (S390_GP0_REGNUM+S390_NUM_GPRS-1)
/* Usually return address */
#define S390_RETADDR_REGNUM (S390_GP0_REGNUM+14)
/* Contains address of top of stack */
#define S390_SP_REGNUM      (S390_GP0_REGNUM+15)
/* needed in findvar.c still */
#define S390_FP_REGNUM     S390_SP_REGNUM
#define S390_FRAME_REGNUM  (S390_GP0_REGNUM+11)
#define S390_FPC_REGNUM    (S390_GP0_REGNUM+S390_NUM_GPRS+S390_NUM_ACRS+S390_NUM_CRS)
/* FPR (Floating point) register 0 */
#define S390_FP0_REGNUM    (S390_FPC_REGNUM+1)
/* Last floating point register */
#define S390_FPLAST_REGNUM (S390_FP0_REGNUM+S390_NUM_FPRS-1)
#define S390_LAST_REGNUM   S390_FPLAST_REGNUM


#define S390_ACR0_OFFSET ((S390_PSW_MASK_SIZE+S390_PSW_ADDR_SIZE)+(S390_GPR_SIZE*S390_NUM_GPRS))
#define S390_CR0_OFFSET (S390_ACR0_OFFSET+(S390_ACR_SIZE*S390_NUM_ACRS))
#define S390_FPC_OFFSET (S390_CR0_OFFSET+(S390_CR_SIZE*S390_NUM_CRS))
#define S390_FP0_OFFSET (S390_FPC_OFFSET+(S390_FPC_SIZE+S390_FPC_PAD_SIZE))
#define S390_GPR6_STACK_OFFSET (GDB_TARGET_IS_ESAME ? 48:24)

#define S390_REGISTER_BYTES ((4+4)+(4*S390_NUM_GPRS)+(4*S390_NUM_ACRS)+ \
(4*S390_NUM_CRS)+(S390_FPC_SIZE+S390_FPC_PAD_SIZE)+(S390_FPR_SIZE*S390_NUM_FPRS))

#define S390X_REGISTER_BYTES ((8+8)+(8*S390_NUM_GPRS)+(4*S390_NUM_ACRS)+ \
(8*S390_NUM_CRS)+(S390_FPC_SIZE+S390_FPC_PAD_SIZE)+(S390_FPR_SIZE*S390_NUM_FPRS))

#ifdef GDBSERVER

int s390_register_byte (int reg_nr);
#define REGISTER_BYTE(reg_nr) s390_register_byte(reg_nr)
#define PC_REGNUM S390_PC_REGNUM
#define NUM_REGS  S390_NUM_REGS
#define NUM_FREGS S390_NUM_FPRS
#define FP_REGNUM S390_FP_REGNUM
#define SP_REGNUM S390_SP_REGNUM
/* Obviously ptrace for user program tracing cannot be allowed
  mess with control registers (except per registers for hardware watchpoints),
  when we add kernel debugging we may need to alter these macros. */
int s390_cannot_fetch_register (int regno);
#define CANNOT_FETCH_REGISTER(regno) s390_cannot_fetch_register(regno)
#define CANNOT_STORE_REGISTER(regno) s390_cannot_fetch_register(regno)

#if CONFIG_ARCH_S390X

int s390x_register_raw_size (int reg_nr);
#define REGISTER_RAW_SIZE(reg_nr) s390x_register_raw_size(reg_nr)
#define GDB_TARGET_IS_ESAME (1)
#define REGISTER_SIZE       (8)
#define REGISTER_BYTES S390X_REGISTER_BYTES

#else /*  CONFIG_ARCH_S390X */

int s390_register_raw_size (int reg_nr);
#define REGISTER_RAW_SIZE(reg_nr) s390_register_raw_size(reg_nr)
#define GDB_TARGET_IS_ESAME (0)
#define REGISTER_SIZE       (4)
#define REGISTER_BYTES S390_REGISTER_BYTES

#endif /* CONFIG_ARCH_S390X */

#else /* GDBSERVER */

#define GDB_TARGET_IS_ESAME (TARGET_ARCHITECTURE->mach == bfd_mach_s390_esame)

#endif /* GDBSERVER */
#endif /* ifndef TM_S390_H */
