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- /* Parameters for execution on a H8/500 series machine.
- Copyright (C) 1993 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., 675 Mass Ave, Cambridge, MA 02139, USA. */
-
- /* Contributed by Steve Chamberlain sac@cygnus.com */
-
- #define GDB_TARGET_IS_H8500
-
- #define IEEE_FLOAT 1
-
- /* Define the bit, byte, and word ordering of the machine. */
-
- #define TARGET_BYTE_ORDER BIG_ENDIAN
-
- #undef TARGET_INT_BIT
- #define TARGET_INT_BIT 16
-
- #undef TARGET_LONG_BIT
- #define TARGET_LONG_BIT 32
-
- #undef TARGET_PTR_BIT
- #define TARGET_PTR_BIT (minimum_mode ? 16 : 32)
-
-
- /* Offset from address of function to start of its code.
- Zero on most machines. */
-
- #define FUNCTION_START_OFFSET 0
-
- /* Advance PC across any function entry prologue instructions
- to reach some "real" code. */
-
- #define SKIP_PROLOGUE(ip) {(ip) = h8500_skip_prologue(ip);}
- extern CORE_ADDR h8500_skip_prologue ();
-
-
- /* Immediately after a function call, return the saved pc.
- Can't always go through the frames for this because on some machines
- the new frame is not set up until the new function executes
- some instructions. */
-
- #define SAVED_PC_AFTER_CALL(frame) saved_pc_after_call(frame)
-
-
- /* Stack grows downward. */
-
- #define INNER_THAN <
-
- /* Illegal instruction - used by the simulator for breakpoint
- detection */
- #define BREAKPOINT {0x0b}
-
-
- /* If your kernel resets the pc after the trap happens you may need to
- define this before including this file. */
-
- #define DECR_PC_AFTER_BREAK 0
-
-
- /* Nonzero if instruction at PC is a return instruction. */
-
- #define ABOUT_TO_RETURN(pc) about_to_return(pc)
-
- /* Return 1 if P points to an invalid floating point value. */
-
- #define INVALID_FLOAT(p, len) 0 /* Just a first guess; not checked */
-
- /* Say how long registers are. */
-
- #define REGISTER_TYPE unsigned long
-
- /* Say how much memory is needed to store a copy of the register set */
-
- #define REGISTER_BYTES (NUM_REGS * 4)
-
- /* Index within `registers' of the first byte of the space for
- register N. */
-
- #define REGISTER_BYTE(N) ((N)*4)
-
- /* Number of bytes of storage in the actual machine representation
- for register N. */
-
- #define REGISTER_RAW_SIZE(N) h8500_register_size(N)
- int h8500_register_size PARAMS ((int regno));
-
- #define REGISTER_SIZE 4
-
- #define REGISTER_VIRTUAL_SIZE(N) h8500_register_size(N)
-
- /* Largest value REGISTER_RAW_SIZE can have. */
-
- #define MAX_REGISTER_RAW_SIZE 4
-
- /* Largest value REGISTER_VIRTUAL_SIZE can have. */
-
- #define MAX_REGISTER_VIRTUAL_SIZE 4
-
- /* Return the GDB type object for the "standard" data type
- of data in register N. */
-
- #define REGISTER_VIRTUAL_TYPE(N) h8500_register_virtual_type(N)
- struct type *h8500_register_virtual_type PARAMS ((int regno));
-
- /* Initializer for an array of names of registers.
- Entries beyond the first NUM_REGS are ignored. */
-
- #define REGISTER_NAMES \
- {"r0", "r1", "r2", "r3", "r4", "r5", "r6", "r7", \
- "pr0", "pr1", "pr2","pr3","pr4","pr5","pr6","pr7","cp","dp","ep","tp","sr","pc"}
-
-
- /* Register numbers of various important registers.
- Note that some of these values are "real" register numbers,
- and correspond to the general registers of the machine,
- and some are "phony" register numbers which are too large
- to be actual register numbers as far as the user is concerned
- but do serve to get the desired values when passed to read_register. */
-
-
- #define R0_REGNUM 0
- #define R1_REGNUM 1
- #define R2_REGNUM 2
- #define R3_REGNUM 3
- #define R4_REGNUM 4
- #define R5_REGNUM 5
- #define R6_REGNUM 6
- #define R7_REGNUM 7
-
-
- #define PR0_REGNUM 8
- #define PR1_REGNUM 9
- #define PR2_REGNUM 10
- #define PR3_REGNUM 11
- #define PR4_REGNUM 12
- #define PR5_REGNUM 13
- #define PR6_REGNUM 14
- #define PR7_REGNUM 15
-
- #define SEG_C_REGNUM 16 /* Segment registers */
- #define SEG_D_REGNUM 17
- #define SEG_E_REGNUM 18
- #define SEG_T_REGNUM 19
-
-
- #define CCR_REGNUM 20 /* Contains processor status */
- #define PC_REGNUM 21 /* Contains program counter */
-
-
- #define NUM_REGS 22
-
-
- #define SP_REGNUM PR7_REGNUM /* Contains address of top of stack */
- #define FP_REGNUM PR6_REGNUM /* Contains address of executing stack frame */
-
- #define PTR_SIZE (minimum_mode ? 2: 4)
- #define PTR_MASK (minimum_mode ? 0x0000ffff : 0x00ffffff)
-
- /* Store the address of the place in which to copy the structure the
- subroutine will return. This is called from call_function. */
-
- /*#define STORE_STRUCT_RETURN(ADDR, SP) \
- { write_register (0, (ADDR)); abort(); }*/
-
- /* Extract from an array REGBUF containing the (raw) register state
- a function return value of type TYPE, and copy that, in virtual format,
- into VALBUF. */
-
- #define EXTRACT_RETURN_VALUE(TYPE,REGBUF,VALBUF) \
- memcpy (VALBUF, (char *)(REGBUF), TYPE_LENGTH(TYPE))
-
-
- /* Write into appropriate registers a function return value
- of type TYPE, given in virtual format. Assumes floats are passed
- in d0/d1. */
-
-
- #define STORE_RETURN_VALUE(TYPE,VALBUF) \
- write_register_bytes (0, VALBUF, TYPE_LENGTH (TYPE))
-
-
- /* Extract from an array REGBUF containing the (raw) register state
- the address in which a function should return its structure value,
- as a CORE_ADDR (or an expression that can be used as one). */
-
- #define EXTRACT_STRUCT_VALUE_ADDRESS(REGBUF) (*(CORE_ADDR *)(REGBUF))
-
-
- /* Define other aspects of the stack frame. */
-
- /* A macro that tells us whether the function invocation represented
- by FI does not have a frame on the stack associated with it. If it
- does not, FRAMELESS is set to 1, else 0. */
- #define FRAMELESS_FUNCTION_INVOCATION(FI, FRAMELESS) \
- (FRAMELESS) = frameless_look_for_prologue(FI)
-
- /* Any function with a frame looks like this
- SECOND ARG
- FIRST ARG
- RET PC
- SAVED R2
- SAVED R3
- SAVED FP <-FP POINTS HERE
- LOCALS0
- LOCALS1 <-SP POINTS HERE
-
- */
-
- CORE_ADDR h8500_frame_chain (/* FRAME thisframe */);
-
- #define INIT_EXTRA_FRAME_INFO(fromleaf, fci) ;
- /* (fci)->frame |= read_register(SEG_T_REGNUM) << 16;*/
-
- #define FRAME_CHAIN(FRAME) h8500_frame_chain(FRAME)
-
- #define FRAME_SAVED_PC(FRAME) frame_saved_pc(FRAME)
-
- #define FRAME_ARGS_ADDRESS(fi) frame_args_address(fi)
-
- #define FRAME_LOCALS_ADDRESS(fi) frame_locals_address(fi);
-
- /* Set VAL to the number of args passed to frame described by FI.
- Can set VAL to -1, meaning no way to tell. */
-
- /* We can't tell how many args there are
- now that the C compiler delays popping them. */
-
- #define FRAME_NUM_ARGS(val,fi) (val = -1)
-
- /* Return number of bytes at start of arglist that are not really args. */
-
- #define FRAME_ARGS_SKIP 0
-
- /* 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. */
-
- #define FRAME_FIND_SAVED_REGS(frame_info, frame_saved_regs) \
- frame_find_saved_regs(frame_info, &(frame_saved_regs))
-
-
- /* Push an empty stack frame, to record the current PC, etc. */
-
- /*#define PUSH_DUMMY_FRAME { h8300_push_dummy_frame (); }*/
-
- /* Discard from the stack the innermost frame, restoring all registers. */
-
- #define POP_FRAME { h8300_pop_frame (); }
-
- #define SHORT_INT_MAX 32767
- #define SHORT_INT_MIN -32768
-
-
- #define NAMES_HAVE_UNDERSCORE
-
- typedef unsigned short INSN_WORD;
-
- #define ADDR_BITS_REMOVE(addr) ((addr) & 0xffffff)
-
- #define read_memory_short(x) (read_memory_integer(x,2) & 0xffff)
- #define DONT_USE_REMOTE
-
-
- #define PRINT_REGISTER_HOOK(regno) print_register_hook(regno)
-
- int minimum_mode;
-
- #define CALL_DUMMY_LENGTH 10
-
- /* Fake variables to make it easy to use 24 bit register pointers */
-
- int h8500_is_trapped_internalvar PARAMS ((char *name));
- #define IS_TRAPPED_INTERNALVAR h8500_is_trapped_internalvar
-
- struct value * h8500_value_of_trapped_internalvar (/* struct internalvar *var */);
- #define VALUE_OF_TRAPPED_INTERNALVAR h8500_value_of_trapped_internalvar
-
- void h8500_set_trapped_internalvar (/* struct internalvar *var, value newval, int bitpos, int bitsize, int offset */);
- #define SET_TRAPPED_INTERNALVAR h8500_set_trapped_internalvar
-
-
-
- int regoff[NUM_REGS];
-
- CORE_ADDR target_read_sp();
- void target_write_sp PARAMS ((CORE_ADDR ));
-
- CORE_ADDR target_read_fp();
- void target_write_fp PARAMS ((CORE_ADDR ));
-
- CORE_ADDR target_read_pc();
- void target_write_pc PARAMS ((CORE_ADDR ));
-
-
- #define TARGET_READ_SP() target_read_sp()
- #define TARGET_WRITE_SP(x) target_write_sp(x)
- #define TARGET_READ_PC() target_read_pc()
- #define TARGET_WRITE_PC(x) target_write_pc(x)
-
- #define TARGET_READ_FP() target_read_fp()
- #define TARGET_WRITE_FP(x) target_write_fp(x)
- #define GDB_TARGET_IS_H8500
-