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[/] [or1k/] [trunk/] [gdb-5.0/] [gdb/] [config/] [w65/] [tm-w65.h] - Blame information for rev 106

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1 106 markom
/* Parameters for execution on a WDC 65816 machine.
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   Copyright (C) 1995 Free Software Foundation, Inc.
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   This file is part of GDB.
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   This program is free software; you can redistribute it and/or modify
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   it under the terms of the GNU General Public License as published by
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   the Free Software Foundation; either version 2 of the License, or
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   (at your option) any later version.
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   This program is distributed in the hope that it will be useful,
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   but WITHOUT ANY WARRANTY; without even the implied warranty of
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   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
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   GNU General Public License for more details.
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   You should have received a copy of the GNU General Public License
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   along with this program; if not, write to the Free Software
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   Foundation, Inc., 59 Temple Place - Suite 330,
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   Boston, MA 02111-1307, USA.  */
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/* Contributed by Steve Chamberlain sac@cygnus.com */
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#define GDB_TARGET_IS_W65
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#define IEEE_FLOAT 1
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/* Define the bit, byte, and word ordering of the machine.  */
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#define TARGET_BYTE_ORDER LITTLE_ENDIAN
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/* Offset from address of function to start of its code.
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   Zero on most machines.  */
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#define FUNCTION_START_OFFSET 0
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/* Advance PC across any function entry prologue instructions
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   to reach some "real" code.  */
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extern CORE_ADDR w65_skip_prologue ();
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#define SKIP_PROLOGUE(ip) \
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    {(ip) = w65_skip_prologue(ip);}
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/* Immediately after a function call, return the saved pc.
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   Can't always go through the frames for this because on some machines
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   the new frame is not set up until the new function executes
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   some instructions.
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   The return address is the value saved in the PR register + 4  */
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#define SAVED_PC_AFTER_CALL(frame) \
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  saved_pc_after_call(frame)
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/* Stack grows downward.  */
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#define INNER_THAN(lhs,rhs) ((lhs) < (rhs))
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/* Illegal instruction - used by the simulator for breakpoint
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   detection */
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#define BREAKPOINT {0xcb}       /* WAI */
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/* If your kernel resets the pc after the trap happens you may need to
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   define this before including this file.  */
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#define DECR_PC_AFTER_BREAK 0
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/* Return 1 if P points to an invalid floating point value.  */
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#define INVALID_FLOAT(p, len) 0 /* Just a first guess; not checked */
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/* Say how long registers are.  */
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/*#define REGISTER_TYPE  int */
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/* Say how much memory is needed to store a copy of the register set */
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#define REGISTER_BYTES    (NUM_REGS*4)
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/* Index within `registers' of the first byte of the space for
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   register N.  */
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#define REGISTER_BYTE(N)  ((N)*4)
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/* Number of bytes of storage in the actual machine representation
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   for register N.  */
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#define REGISTER_RAW_SIZE(N)     (((N) < 16) ? 2 : 4)
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#define REGISTER_VIRTUAL_SIZE(N)  REGISTER_RAW_SIZE(N)
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/* Largest value REGISTER_RAW_SIZE can have.  */
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#define MAX_REGISTER_RAW_SIZE 4
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/* Largest value REGISTER_VIRTUAL_SIZE can have.  */
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#define MAX_REGISTER_VIRTUAL_SIZE 4
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/* Return the GDB type object for the "standard" data type
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   of data in register N.  */
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#define REGISTER_VIRTUAL_TYPE(N) \
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  (REGISTER_VIRTUAL_SIZE(N) == 2 ? builtin_type_unsigned_short : builtin_type_unsigned_long)
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/* Initializer for an array of names of registers.
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   Entries beyond the first NUM_REGS are ignored.  */
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#define REGISTER_NAMES \
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  {"r0","r1","r2", "r3", "r4", "r5", "r6", "r7",  \
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   "r8","r9","r10","r11","r12","r13","r14","r15", \
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   "pc","a", "x",  "y",  "dbr","d",  "s",  "p",   \
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   "ticks","cycles","insts"}
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/* Register numbers of various important registers.
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   Note that some of these values are "real" register numbers,
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   and correspond to the general registers of the machine,
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   and some are "phony" register numbers which are too large
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   to be actual register numbers as far as the user is concerned
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   but do serve to get the desired values when passed to read_register.  */
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#define SP_REGNUM  22
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#define FP_REGNUM  15
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#define NUM_REGS   27
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#define PC_REGNUM  16
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#define P_REGNUM   23
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/* Store the address of the place in which to copy the structure the
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   subroutine will return.  This is called from call_function.
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   We store structs through a pointer passed in R4 */
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#define STORE_STRUCT_RETURN(ADDR, SP) \
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    { write_register (4, (ADDR));  }
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/* Extract from an array REGBUF containing the (raw) register state
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   a function return value of type TYPE, and copy that, in virtual format,
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   into VALBUF.  */
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#define EXTRACT_RETURN_VALUE(TYPE,REGBUF,VALBUF) \
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  memcpy (VALBUF, (char *)(REGBUF), TYPE_LENGTH(TYPE))
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/* Write into appropriate registers a function return value
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   of type TYPE, given in virtual format.
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   Things always get returned in R4/R5 */
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#define STORE_RETURN_VALUE(TYPE,VALBUF) \
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  write_register_bytes (REGISTER_BYTE(4), VALBUF, TYPE_LENGTH (TYPE))
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/* Extract from an array REGBUF containing the (raw) register state
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   the address in which a function should return its structure value,
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   as a CORE_ADDR (or an expression that can be used as one).  */
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#define EXTRACT_STRUCT_VALUE_ADDRESS(REGBUF) (*(CORE_ADDR *)(REGBUF))
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/* A macro that tells us whether the function invocation represented
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   by FI does not have a frame on the stack associated with it.  If it
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   does not, FRAMELESS is set to 1, else 0.  */
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#define FRAMELESS_FUNCTION_INVOCATION(FI) \
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  (frameless_look_for_prologue (FI))
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#define FRAME_CHAIN(FRAME)       w65_frame_chain(FRAME)
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#define FRAME_SAVED_PC(FRAME)    (w65_frame_saved_pc(FRAME))
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#define FRAME_ARGS_ADDRESS(fi)   (fi)->frame
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#define FRAME_LOCALS_ADDRESS(fi) (fi)->frame
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/* Set VAL to the number of args passed to frame described by FI.
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   Can set VAL to -1, meaning no way to tell.  */
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/* We can't tell how many args there are */
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#define FRAME_NUM_ARGS(fi) (-1)
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/* Return number of bytes at start of arglist that are not really args.  */
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#define FRAME_ARGS_SKIP 0
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/* Put here the code to store, into a struct frame_saved_regs,
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   the addresses of the saved registers of frame described by FRAME_INFO.
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   This includes special registers such as pc and fp saved in special
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   ways in the stack frame.  sp is even more special:
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   the address we return for it IS the sp for the next frame.  */
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#define FRAME_FIND_SAVED_REGS(frame_info, frame_saved_regs)         \
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   frame_find_saved_regs(frame_info, &(frame_saved_regs))
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typedef unsigned short INSN_WORD;
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extern CORE_ADDR w65_addr_bits_remove PARAMS ((CORE_ADDR));
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#define ADDR_BITS_REMOVE(addr) w65_addr_bits_remove (addr)
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#define CALL_DUMMY_LENGTH 10
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/* Discard from the stack the innermost frame,
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   restoring all saved registers.  */
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#define POP_FRAME pop_frame();
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#define NOP   {0xea}
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#define REGISTER_SIZE 4
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#define PRINT_REGISTER_HOOK(regno) print_register_hook(regno)
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#define TARGET_INT_BIT  16
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#define TARGET_LONG_BIT 32
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#define TARGET_PTR_BIT  32

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