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Diffstat (limited to 'gdb/tm-h8500.h')
| -rw-r--r-- | gdb/tm-h8500.h | 293 |
1 files changed, 293 insertions, 0 deletions
diff --git a/gdb/tm-h8500.h b/gdb/tm-h8500.h new file mode 100644 index 0000000..5105c6a --- /dev/null +++ b/gdb/tm-h8500.h @@ -0,0 +1,293 @@ +/* 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 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_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) register_raw_size(N) + +#define REGISTER_VIRTUAL_SIZE(N) register_virtual_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 + +/* Nonzero if register N requires conversion + from raw format to virtual format. */ + +#define REGISTER_CONVERTIBLE(N) 1 + +/* Convert data from raw format for register REGNUM + to virtual format for register REGNUM. */ + +#define REGISTER_CONVERT_TO_VIRTUAL(REGNUM,FROM,TO) \ + register_convert_to_virtual(REGNUM, FROM, TO) + +/* Convert data from virtual format for register REGNUM + to raw format for register REGNUM. */ + +#define REGISTER_CONVERT_TO_RAW(REGNUM,FROM,TO) \ + register_convert_to_raw(REGNUM, FROM, TO) + +/* Return the GDB type object for the "standard" data type + of data in register N. */ +struct type *register_virtual_type(); + +#define REGISTER_VIRTUAL_TYPE(N) register_virtual_type(N) + + +/* 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", \ + "ccr","pc", \ + "cp","dp","ep","tp" } + +/* 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 0 +#define R1 1 +#define R2 2 +#define R3 3 +#define R4 4 +#define R5 5 +#define R6 6 +#define R7 7 + +#define PR0 8 /* R0-R7 with seg prefixed */ +#define PR1 9 +#define PR2 10 +#define PR3 11 +#define PR4 12 +#define PR5 13 +#define PR6 14 +#define PR7 15 + +#define SP_REGNUM PR7 /* Contains address of top of stack */ +#define FP_REGNUM PR6 /* Contains address of executing stack frame */ + +#define CCR_REGNUM 16 /* Contains processor status */ +#define PC_REGNUM 17 /* Contains program counter */ + +#define SEG_C 18 /* Segment registers */ +#define SEG_D 19 +#define SEG_E 20 +#define SEG_T 21 + +#define NUM_REGS 22 + +#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) \ + bcopy ((char *)(REGBUF), VALBUF, 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 + + */ +#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 BEFORE_MAIN_LOOP_HOOK \ + hms_before_main_loop(); + + +#define NAMES_HAVE_UNDERSCORE + +typedef unsigned short INSN_WORD; + +#define ADDR_BITS_REMOVE(addr) ((addr) & 0xffffff) +#define ADDR_BITS_SET(addr) (((addr))) + +#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 |