/* Target-dependent code for Xilinx MicroBlaze.

   Copyright (C) 2009-2022 Free Software Foundation, Inc.

   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 3 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, see <http://www.gnu.org/licenses/>.  */

#ifndef MICROBLAZE_TDEP_H
#define MICROBLAZE_TDEP_H 1
#include "objfiles.h"
#include "gdbarch.h"

struct gdbarch;
enum microblaze_abi
  {
    MICROBLAZE_ABI_AUTO = 0,
    MICROBLAZE_ABI_M64,
 };

enum microblaze_abi microblaze_abi (struct gdbarch *gdbarch);
/* Microblaze architecture-specific information.  */
struct microblaze_gregset
{
   microblaze_gregset() {}
   unsigned int gregs[32];
   unsigned int fpregs[32];
   unsigned int pregs[18];
};

struct microblaze_gdbarch_tdep : gdbarch_tdep
{
  int dummy;		// declare something.

  enum microblaze_abi microblaze_abi {};
  enum microblaze_abi found_abi {};
  /* Register sets.  */
  struct regset *gregset;
  size_t sizeof_gregset;
  struct regset *fpregset;
  size_t sizeof_fpregset;
  int register_size;
};

/* Register numbers.  */
enum microblaze_regnum
{
  MICROBLAZE_R0_REGNUM,
  MICROBLAZE_R1_REGNUM, MICROBLAZE_SP_REGNUM = MICROBLAZE_R1_REGNUM,
  MICROBLAZE_R2_REGNUM,
  MICROBLAZE_R3_REGNUM, MICROBLAZE_RETVAL_REGNUM = MICROBLAZE_R3_REGNUM,
  MICROBLAZE_R4_REGNUM,
  MICROBLAZE_R5_REGNUM, MICROBLAZE_FIRST_ARGREG = MICROBLAZE_R5_REGNUM,
  MICROBLAZE_R6_REGNUM,
  MICROBLAZE_R7_REGNUM,
  MICROBLAZE_R8_REGNUM,
  MICROBLAZE_R9_REGNUM,
  MICROBLAZE_R10_REGNUM, MICROBLAZE_LAST_ARGREG = MICROBLAZE_R10_REGNUM,
  MICROBLAZE_R11_REGNUM,
  MICROBLAZE_R12_REGNUM,
  MICROBLAZE_R13_REGNUM,
  MICROBLAZE_R14_REGNUM,
  MICROBLAZE_R15_REGNUM,MICROBLAZE_PREV_PC_REGNUM = MICROBLAZE_R15_REGNUM,
  MICROBLAZE_R16_REGNUM,
  MICROBLAZE_R17_REGNUM,
  MICROBLAZE_R18_REGNUM,
  MICROBLAZE_R19_REGNUM,MICROBLAZE_FP_REGNUM = MICROBLAZE_R19_REGNUM,
  MICROBLAZE_R20_REGNUM,
  MICROBLAZE_R21_REGNUM,
  MICROBLAZE_R22_REGNUM,
  MICROBLAZE_R23_REGNUM,
  MICROBLAZE_R24_REGNUM,
  MICROBLAZE_R25_REGNUM,
  MICROBLAZE_R26_REGNUM,
  MICROBLAZE_R27_REGNUM,
  MICROBLAZE_R28_REGNUM,
  MICROBLAZE_R29_REGNUM,
  MICROBLAZE_R30_REGNUM,
  MICROBLAZE_R31_REGNUM,
  MICROBLAZE_MAX_GPR_REGS,
  MICROBLAZE_PC_REGNUM=32,
  MICROBLAZE_MSR_REGNUM,
  MICROBLAZE_EAR_REGNUM,
  MICROBLAZE_ESR_REGNUM,
  MICROBLAZE_FSR_REGNUM,
  MICROBLAZE_BTR_REGNUM,
  MICROBLAZE_PVR0_REGNUM,
  MICROBLAZE_PVR1_REGNUM,
  MICROBLAZE_PVR2_REGNUM,
  MICROBLAZE_PVR3_REGNUM,
  MICROBLAZE_PVR4_REGNUM,
  MICROBLAZE_PVR5_REGNUM,
  MICROBLAZE_PVR6_REGNUM,
  MICROBLAZE_PVR7_REGNUM,
  MICROBLAZE_PVR8_REGNUM,
  MICROBLAZE_PVR9_REGNUM,
  MICROBLAZE_PVR10_REGNUM,
  MICROBLAZE_PVR11_REGNUM,
  MICROBLAZE_REDR_REGNUM,
  MICROBLAZE_RPID_REGNUM,
  MICROBLAZE_RZPR_REGNUM,
  MICROBLAZE_RTLBX_REGNUM,
  MICROBLAZE_RTLBSX_REGNUM,
  MICROBLAZE_RTLBLO_REGNUM,
  MICROBLAZE_RTLBHI_REGNUM,
  MICROBLAZE_SLR_REGNUM,
  MICROBLAZE_SHR_REGNUM,
  MICROBLAZE_NUM_REGS, MICROBLAZE_NUM_CORE_REGS = MICROBLAZE_NUM_REGS
};

/* Big enough to hold the size of the largest register in bytes.  */
#define MICROBLAZE_MAX_REGISTER_SIZE   64

struct microblaze_frame_cache
{
  /* Base address.  */
  CORE_ADDR base;
  CORE_ADDR pc;

  CORE_ADDR saved_sp;
  /* Do we have a frame?  */
  int frameless_p;

  /* Frame size.  */
  int framesize;

  /* Frame register.  */
  int fp_regnum;

  /* Offsets to saved registers.  */
  int register_offsets[MICROBLAZE_NUM_REGS];

  /* Table of saved registers.  */
  struct trad_frame_saved_reg *saved_regs;
};
/* All registers are 32 bits.  */
//#define MICROBLAZE_REGISTER_SIZE 8

/* MICROBLAZE_BREAKPOINT defines the breakpoint that should be used.
   Only used for native debugging.  */
#define MICROBLAZE_BREAKPOINT {0xba, 0x0c, 0x00, 0x18}
#define MICROBLAZE_BREAKPOINT_LE {0x18, 0x00, 0x0c, 0xba}

extern void microblaze_supply_gregset (const struct regset *regset,
                                    struct regcache *regcache,
                                    int regnum, const void *gregs);
extern void microblaze_collect_gregset (const struct regset *regset,
                                     const struct regcache *regcache,
                                     int regnum, void *gregs);
extern void microblaze_supply_fpregset (struct regcache *regcache,
                                     int regnum, const void *fpregs);
extern void microblaze_collect_fpregset (const struct regcache *regcache,
                                      int regnum, void *fpregs);

extern const struct regset * microblaze_regset_from_core_section (struct gdbarch *gdbarch,
                                     const char *sect_name, size_t sect_size);

#endif /* microblaze-tdep.h */
