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/* Parameters for execution on a Mitsubishi m32r processor.

   Copyright 1996, 1997 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 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.  */

/* Used by mswin.  */

#define TARGET_M32R 1

/* mvs_check TARGET_BYTE_ORDER BIG_ENDIAN */

#define TARGET_BYTE_ORDER BIG_ENDIAN

/* mvs_check REGISTER_NAMES */

#define REGISTER_NAMES \

{ "r0", "r1", "r2", "r3", "r4", "r5", "r6", "r7", \

  "r8", "r9", "r10", "r11", "r12", "fp", "lr", "sp", \

  "psw", "cbr", "spi", "spu", "bpc", "pc", "accl", "acch", \

    /*  "cond", "sm", "bsm", "ie", "bie", "bcarry",  */ \

}

/* mvs_check  NUM_REGS */

#define NUM_REGS                        24

/* mvs_check  REGISTER_SIZE */

#define REGISTER_SIZE                   4

/* mvs_check  MAX_REGISTER_RAW_SIZE */

#define MAX_REGISTER_RAW_SIZE           4

/* mvs_check  *_REGNUM */

#define R0_REGNUM       0

#define STRUCT_RETURN_REGNUM 0

#define ARG0_REGNUM     0

#define ARGLAST_REGNUM  3

#define V0_REGNUM       0

#define V1_REGNUM       1

#define FP_REGNUM       13

#define RP_REGNUM       14

#define SP_REGNUM       15

#define PSW_REGNUM      16

#define CBR_REGNUM      17

#define SPI_REGNUM      18

#define SPU_REGNUM      19

#define BPC_REGNUM      20

#define PC_REGNUM       21

#define ACCL_REGNUM     22

#define ACCH_REGNUM     23

/* mvs_check  REGISTER_BYTES */

#define REGISTER_BYTES                  (NUM_REGS * 4)

/* mvs_check  REGISTER_VIRTUAL_TYPE */

#define REGISTER_VIRTUAL_TYPE(REG)      builtin_type_int

/* mvs_check  REGISTER_BYTE */

#define REGISTER_BYTE(REG)              ((REG) * 4)

/* mvs_check  REGISTER_VIRTUAL_SIZE */

#define REGISTER_VIRTUAL_SIZE(REG)      4

/* mvs_check  REGISTER_RAW_SIZE */

#define REGISTER_RAW_SIZE(REG)          4

/* mvs_check  MAX_REGISTER_VIRTUAL_SIZE */

#define MAX_REGISTER_VIRTUAL_SIZE       4

/* mvs_check  BREAKPOINT */

#define BREAKPOINT {0x10, 0xf1}

/* mvs_no_check  FUNCTION_START_OFFSET */

#define FUNCTION_START_OFFSET 0

/* mvs_check  DECR_PC_AFTER_BREAK */

#define DECR_PC_AFTER_BREAK 0

/* mvs_check  INNER_THAN */

#define INNER_THAN(lhs,rhs) ((lhs) < (rhs))

/* mvs_check  SAVED_PC_AFTER_CALL */

#define SAVED_PC_AFTER_CALL(fi) read_register (RP_REGNUM)

struct frame_info;

struct frame_saved_regs;

struct type;

struct value;

/* Define other aspects of the stack frame.

   We keep the offsets of all saved registers, 'cause we need 'em a lot!

   We also keep the current size of the stack frame, and whether

   the frame pointer is valid (for frameless functions, and when we're

   still in the prologue of a function with a frame) */

/* mvs_check  EXTRA_FRAME_INFO */

#define EXTRA_FRAME_INFO        \

  struct frame_saved_regs fsr;  \

  int framesize;                \

  int using_frame_pointer;

extern void m32r_init_extra_frame_info PARAMS ((struct frame_info * fi));

/* mvs_check  INIT_EXTRA_FRAME_INFO */

#define INIT_EXTRA_FRAME_INFO(fromleaf, fi) m32r_init_extra_frame_info (fi)

/* mvs_no_check  INIT_FRAME_PC */

#define INIT_FRAME_PC           /* Not necessary */

extern void

m32r_frame_find_saved_regs PARAMS ((struct frame_info * fi,

                                    struct frame_saved_regs * regaddr));

/* Put here the code to store, into a struct frame_saved_regs,

   the addresses of the saved registers of frame described by FRAME_INFO.

   This includes special registers such as pc and fp saved in special

   ways in the stack frame.  sp is even more special:

   the address we return for it IS the sp for the next frame.  */

/* mvs_check  FRAME_FIND_SAVED_REGS */

#define FRAME_FIND_SAVED_REGS(frame_info, frame_saved_regs)         \

   m32r_frame_find_saved_regs(frame_info, &(frame_saved_regs))

extern CORE_ADDR m32r_frame_chain PARAMS ((struct frame_info * fi));

/* mvs_check  FRAME_CHAIN */

#define FRAME_CHAIN(fi)                 m32r_frame_chain (fi)

#define FRAME_CHAIN_VALID(fp, frame)    generic_file_frame_chain_valid (fp, frame)

extern CORE_ADDR m32r_find_callers_reg PARAMS ((struct frame_info * fi,

                                                int regnum));

extern CORE_ADDR m32r_frame_saved_pc PARAMS ((struct frame_info *));

/* mvs_check  FRAME_SAVED_PC */

#define FRAME_SAVED_PC(fi)              m32r_frame_saved_pc (fi)

/* mvs_check  EXTRACT_RETURN_VALUE */

#define EXTRACT_RETURN_VALUE(TYPE, REGBUF, VALBUF) \

  memcpy ((VALBUF), \

          (char *)(REGBUF) + REGISTER_BYTE (V0_REGNUM) + \

          ((TYPE_LENGTH (TYPE) > 4 ? 8 : 4) - TYPE_LENGTH (TYPE)), \

          TYPE_LENGTH (TYPE))

/* mvs_check  STORE_RETURN_VALUE */

#define STORE_RETURN_VALUE(TYPE, VALBUF) \

  write_register_bytes(REGISTER_BYTE (V0_REGNUM) + \

                       ((TYPE_LENGTH (TYPE) > 4 ? 8:4) - TYPE_LENGTH (TYPE)),\

                       (VALBUF), TYPE_LENGTH (TYPE));

extern CORE_ADDR m32r_skip_prologue PARAMS ((CORE_ADDR pc));

/* mvs_check  SKIP_PROLOGUE */

#define SKIP_PROLOGUE(pc) (m32r_skip_prologue (pc))

/* mvs_no_check  FRAME_ARGS_SKIP */

#define FRAME_ARGS_SKIP 0

/* mvs_no_check  FRAME_ARGS_ADDRESS */

#define FRAME_ARGS_ADDRESS(fi) ((fi)->frame)

/* mvs_no_check  FRAME_LOCALS_ADDRESS */

#define FRAME_LOCALS_ADDRESS(fi) ((fi)->frame)

/* mvs_no_check  FRAME_NUM_ARGS */

#define FRAME_NUM_ARGS(fi) (-1)

#define COERCE_FLOAT_TO_DOUBLE(formal, actual) (1)

extern void m32r_write_sp (CORE_ADDR val);

#define TARGET_WRITE_SP m32r_write_sp

/* struct passing and returning stuff */

#define STORE_STRUCT_RETURN(STRUCT_ADDR, SP)    \

        write_register (0, STRUCT_ADDR)

extern use_struct_convention_fn m32r_use_struct_convention;

#define USE_STRUCT_CONVENTION(GCC_P, TYPE) m32r_use_struct_convention (GCC_P, TYPE)

#define EXTRACT_STRUCT_VALUE_ADDRESS(REGBUF) \

  extract_address (REGBUF + REGISTER_BYTE (V0_REGNUM), \

                   REGISTER_RAW_SIZE (V0_REGNUM))

#define REG_STRUCT_HAS_ADDR(gcc_p,type)     (TYPE_LENGTH (type) > 8)

/* generic dummy frame stuff */

#define PUSH_DUMMY_FRAME             generic_push_dummy_frame ()

#define PC_IN_CALL_DUMMY(PC, SP, FP) generic_pc_in_call_dummy (PC, SP, FP)

/* target-specific dummy_frame stuff */

extern struct frame_info *m32r_pop_frame PARAMS ((struct frame_info * frame));

/* mvs_check  POP_FRAME */

#define POP_FRAME m32r_pop_frame (get_current_frame ())

/* mvs_no_check  STACK_ALIGN */

/* #define STACK_ALIGN(x) ((x + 3) & ~3) */

extern CORE_ADDR m32r_push_return_address PARAMS ((CORE_ADDR, CORE_ADDR));

extern CORE_ADDR m32r_push_arguments PARAMS ((int nargs,

                                              struct value ** args,

                                              CORE_ADDR sp,

                                              unsigned char struct_return,

                                              CORE_ADDR struct_addr));

/* mvs_no_check  PUSH_ARGUMENTS */

#define PUSH_ARGUMENTS(NARGS, ARGS, SP, STRUCT_RETURN, STRUCT_ADDR) \

  (m32r_push_arguments (NARGS, ARGS, SP, STRUCT_RETURN, STRUCT_ADDR))

#define PUSH_RETURN_ADDRESS(PC, SP)      m32r_push_return_address (PC, SP)

/* override the standard get_saved_register function with

   one that takes account of generic CALL_DUMMY frames */

#define GET_SAVED_REGISTER(raw_buffer, optimized, addrp, frame, regnum, lval) \

     generic_get_saved_register (raw_buffer, optimized, addrp, frame, regnum, lval)

#define USE_GENERIC_DUMMY_FRAMES 1

#define CALL_DUMMY                   {0}

#define CALL_DUMMY_LENGTH            (0)

#define CALL_DUMMY_START_OFFSET      (0)

#define CALL_DUMMY_BREAKPOINT_OFFSET (0)

#define FIX_CALL_DUMMY(DUMMY1, STARTADDR, FUNADDR, NARGS, ARGS, TYPE, GCCP)

#define CALL_DUMMY_LOCATION          AT_ENTRY_POINT

#define CALL_DUMMY_ADDRESS()         entry_point_address ()