298 lines
9.2 KiB
C
298 lines
9.2 KiB
C
/* Parameters for execution on a H8/500 series machine.
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Copyright (C) 1993, 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, Boston, MA 02111-1307, USA. */
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/* Contributed by Steve Chamberlain sac@cygnus.com */
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#define GDB_TARGET_IS_H8500
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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 BIG_ENDIAN
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/* Define the sizes of integers and pointers. */
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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 (minimum_mode ? 16 : 32)
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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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#define SKIP_PROLOGUE(ip) { (ip) = h8500_skip_prologue(ip); }
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extern CORE_ADDR h8500_skip_prologue PARAMS ((CORE_ADDR));
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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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#define SAVED_PC_AFTER_CALL(frame) saved_pc_after_call()
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extern CORE_ADDR saved_pc_after_call PARAMS ((void));
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/* Stack grows downward. */
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#define INNER_THAN <
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/* Illegal instruction - used by the simulator for breakpoint
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detection */
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#define BREAKPOINT {0x0b}
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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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#if 0 /* never used */
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/* Nonzero if instruction at PC is a return instruction. */
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#define ABOUT_TO_RETURN(pc) about_to_return(pc)
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#endif
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/* Say how long registers are. */
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#define REGISTER_TYPE unsigned long
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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) h8500_register_size(N)
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extern int h8500_register_size PARAMS ((int regno));
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#define REGISTER_SIZE 4
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#define REGISTER_VIRTUAL_SIZE(N) h8500_register_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) h8500_register_virtual_type(N)
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extern struct type *h8500_register_virtual_type PARAMS ((int regno));
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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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"pr0","pr1","pr2","pr3","pr4","pr5","pr6","pr7", \
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"cp", "dp", "ep", "tp", "sr", "pc"}
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/* Register numbers of various important registers. Note that some of
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these values are "real" register numbers, and correspond to the
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general registers of the machine, and some are "phony" register
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numbers which are too large to be actual register numbers as far as
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the user is concerned but do serve to get the desired values when
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passed to read_register. */
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#define R0_REGNUM 0
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#define R1_REGNUM 1
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#define R2_REGNUM 2
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#define R3_REGNUM 3
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#define R4_REGNUM 4
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#define R5_REGNUM 5
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#define R6_REGNUM 6
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#define R7_REGNUM 7
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#define PR0_REGNUM 8
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#define PR1_REGNUM 9
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#define PR2_REGNUM 10
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#define PR3_REGNUM 11
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#define PR4_REGNUM 12
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#define PR5_REGNUM 13
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#define PR6_REGNUM 14
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#define PR7_REGNUM 15
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#define SEG_C_REGNUM 16 /* Segment registers */
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#define SEG_D_REGNUM 17
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#define SEG_E_REGNUM 18
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#define SEG_T_REGNUM 19
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#define CCR_REGNUM 20 /* Contains processor status */
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#define PC_REGNUM 21 /* Contains program counter */
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#define NUM_REGS 22
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#define SP_REGNUM PR7_REGNUM /* Contains address of top of stack */
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#define FP_REGNUM PR6_REGNUM /* Contains address of executing stack frame */
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#define PTR_SIZE (minimum_mode ? 2 : 4)
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#define PTR_MASK (minimum_mode ? 0x0000ffff : 0x00ffffff)
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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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/*#define STORE_STRUCT_RETURN(ADDR, SP) \
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{ write_register (0, (ADDR)); abort(); }*/
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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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#define STORE_RETURN_VALUE(TYPE,VALBUF) \
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write_register_bytes (0, 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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/* Define other aspects of the stack frame. */
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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, FRAMELESS) \
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(FRAMELESS) = frameless_look_for_prologue(FI)
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/* Any function with a frame looks like this
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SECOND ARG
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FIRST ARG
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RET PC
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SAVED R2
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SAVED R3
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SAVED FP <-FP POINTS HERE
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LOCALS0
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LOCALS1 <-SP POINTS HERE
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*/
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#define INIT_EXTRA_FRAME_INFO(fromleaf, fci) ;
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/* (fci)->frame |= read_register(SEG_T_REGNUM) << 16;*/
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#define FRAME_CHAIN(FRAME) h8500_frame_chain(FRAME)
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struct frame_info;
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extern CORE_ADDR h8500_frame_chain PARAMS ((struct frame_info *));
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#define FRAME_SAVED_PC(FRAME) frame_saved_pc(FRAME)
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extern CORE_ADDR frame_saved_pc PARAMS ((struct frame_info *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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now that the C compiler delays popping them. */
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#define FRAME_NUM_ARGS(val,fi) (val = -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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struct frame_saved_regs;
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extern void frame_find_saved_regs PARAMS ((struct frame_info *frame_info, struct frame_saved_regs *frame_saved_regs));
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/* Discard from the stack the innermost frame, restoring all registers. */
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#define POP_FRAME { h8500_pop_frame (); }
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extern void h8500_pop_frame PARAMS ((void));
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#define SHORT_INT_MAX 32767
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#define SHORT_INT_MIN -32768
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#define NAMES_HAVE_UNDERSCORE
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typedef unsigned short INSN_WORD;
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#define ADDR_BITS_REMOVE(addr) ((addr) & 0xffffff)
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#define read_memory_short(x) (read_memory_integer(x,2) & 0xffff)
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#define PRINT_REGISTER_HOOK(regno) print_register_hook(regno)
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extern void print_register_hook PARAMS ((int));
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extern int minimum_mode;
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#define CALL_DUMMY_LENGTH 10
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/* Fake variables to make it easy to use 24 bit register pointers */
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#define IS_TRAPPED_INTERNALVAR h8500_is_trapped_internalvar
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extern int h8500_is_trapped_internalvar PARAMS ((char *name));
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#define VALUE_OF_TRAPPED_INTERNALVAR h8500_value_of_trapped_internalvar
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extern struct value * h8500_value_of_trapped_internalvar (/* struct internalvar *var */);
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#define SET_TRAPPED_INTERNALVAR h8500_set_trapped_internalvar
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extern void h8500_set_trapped_internalvar (/* struct internalvar *var, value newval, int bitpos, int bitsize, int offset */);
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extern CORE_ADDR h8500_read_sp PARAMS ((void));
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extern void h8500_write_sp PARAMS ((CORE_ADDR));
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extern CORE_ADDR h8500_read_fp PARAMS ((void));
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extern void h8500_write_fp PARAMS ((CORE_ADDR));
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extern CORE_ADDR h8500_read_pc PARAMS ((int));
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extern void h8500_write_pc PARAMS ((CORE_ADDR, int));
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#define TARGET_READ_SP() h8500_read_sp()
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#define TARGET_WRITE_SP(x) h8500_write_sp(x)
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#define TARGET_READ_PC(pid) h8500_read_pc(pid)
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#define TARGET_WRITE_PC(x,pid) h8500_write_pc(x,pid)
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#define TARGET_READ_FP() h8500_read_fp()
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#define TARGET_WRITE_FP(x) h8500_write_fp(x)
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