home *** CD-ROM | disk | FTP | other *** search
- /* Parameters for execution on a Hitachi Super-H 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_SH
-
- #define IEEE_FLOAT 1
-
- /* Define the bit, byte, and word ordering of the machine. */
-
- #define TARGET_BYTE_ORDER BIG_ENDIAN
-
-
- /* 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. */
-
- extern CORE_ADDR sh_skip_prologue ();
- #define SKIP_PROLOGUE(ip) \
- {(ip) = sh_skip_prologue(ip);}
-
-
- /* 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.
-
- The return address is the value saved in the PR register + 4 */
-
- #define SAVED_PC_AFTER_CALL(frame) \
- (ADDR_BITS_REMOVE(read_register(PR_REGNUM))+4)
-
- /* Stack grows downward. */
-
- #define INNER_THAN <
-
- /* Illegal instruction - used by the simulator for breakpoint
- detection */
-
- #define BREAKPOINT {0xc3, 0xff} /* 0xc3ff is trapa #ff */
-
-
- /* 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) (read_memory_integer(pc,2) == 0x000b)
-
- /* 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 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) 4
-
- #define REGISTER_VIRTUAL_SIZE(N) 4
-
- /* 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) (0)
-
- /* Convert data from raw format for register REGNUM
- to virtual format for register REGNUM. */
-
- #define REGISTER_CONVERT_TO_VIRTUAL(REGNUM,FROM,TO) \
- { memcpy ((TO), (FROM), 4); }
-
- /* Convert data from virtual format for register REGNUM
- to raw format for register REGNUM. */
-
- #define REGISTER_CONVERT_TO_RAW(REGNUM,FROM,TO) \
- { memcpy ((TO), (FROM), 4); }
-
- /* Return the GDB type object for the "standard" data type
- of data in register N. */
-
- #define REGISTER_VIRTUAL_TYPE(N) builtin_type_int
-
- /* 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", \
- "r8", "r9", "r10","r11","r12","r13","r14","r15",\
- "pc", "pr","gbr","vbr","mach","macl","sr","ticks","cycles","insts" }
-
- #define NUM_REGS 25
-
- /* 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 FP_REGNUM 14
- #define SP_REGNUM 15
- #define PC_REGNUM 16
- #define PR_REGNUM 17
- #define GBR_REGNUM 18
- #define VBR_REGNUM 19
- #define MACH_REGNUM 20
- #define MACL_REGNUM 21
- #define CR_REGNUM 22
-
- /* Store the address of the place in which to copy the structure the
- subroutine will return. This is called from call_function.
-
- We store structs through a pointer passed in R4 */
-
- #define STORE_STRUCT_RETURN(ADDR, SP) \
- { write_register (4, (ADDR)); }
-
- /* 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.
-
- Things always get returned in R4/R5 */
-
- #define STORE_RETURN_VALUE(TYPE,VALBUF) \
- write_register_bytes (REGISTER_BYTE(4), 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.
- we keep a copy of the worked out return pc lying around, since it
- is a useful bit of info */
-
- #define EXTRA_FRAME_INFO \
- CORE_ADDR return_pc;
-
- #define INIT_EXTRA_FRAME_INFO(fromleaf, fi) \
- init_extra_frame_info(fromleaf, fi)
-
- /* 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)
-
- CORE_ADDR h8500_frame_chain (/* FRAME thisframe */);
-
- #define FRAME_CHAIN(FRAME) sh_frame_chain(FRAME)
- #define FRAME_SAVED_PC(FRAME) ((FRAME)->return_pc)
- #define FRAME_ARGS_ADDRESS(fi) (fi)->frame
- #define FRAME_LOCALS_ADDRESS(fi) (fi)->frame
-
- /* 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 */
-
- #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))
-
- #define NAMES_HAVE_UNDERSCORE
-
- typedef unsigned short INSN_WORD;
-
- #define ADDR_BITS_REMOVE(addr) ((addr) & 0xfffff)
- #define ADDR_BITS_SET(addr) (addr)
-
- #define CALL_DUMMY_LENGTH 10
-
- /* Discard from the stack the innermost frame,
- restoring all saved registers. */
-
- #define POP_FRAME pop_frame();
-
-