-/* Parameters for execution on a z8000 series machine.
- Copyright 1992,1993 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. */
-
-
-
-#define IEEE_FLOAT 1
-
-#undef TARGET_INT_BIT
-#undef TARGET_LONG_BIT
-#undef TARGET_SHORT_BIT
-#undef TARGET_PTR_BIT
-
-#define TARGET_SHORT_BIT 16
-#define TARGET_INT_BIT 16
-#define TARGET_LONG_BIT 32
-#define TARGET_PTR_BIT (BIG ? 32: 16)
-
-/* 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. */
-
-#define SKIP_PROLOGUE(ip) {(ip) = z8k_skip_prologue(ip);}
-extern CORE_ADDR mz8k_skip_prologue PARAMS ((CORE_ADDR 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. */
-
-#define SAVED_PC_AFTER_CALL(frame) saved_pc_after_call(frame)
-
-/* Stack grows downward. */
-
-#define INNER_THAN <
-
-/* Sequence of bytes for breakpoint instruction. */
-
-#define BREAKPOINT {0x36,0x00}
-
-/* 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. */
-/* Allow any of the return instructions, including a trapv and a return
- from interupt. */
-
-#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 int
-
-#define NUM_REGS 23 /* 16 registers + 1 ccr + 1 pc + 3 debug
- regs + fake fp + fake sp*/
-#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. On the z8k, all but the pc are 2 bytes, but we
- keep them all as 4 bytes and trim them on I/O */
-
-
-#define REGISTER_RAW_SIZE(N) (((N) < 16)? 2:4)
-
-/* Number of bytes of storage in the program's representation
- for register N. */
-
-#define REGISTER_VIRTUAL_SIZE(N) REGISTER_RAW_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) 0
-
-/* 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. */
-
-#define REGISTER_VIRTUAL_TYPE(N) \
- (REGISTER_VIRTUAL_SIZE(N) == 2? builtin_type_unsigned_int : builtin_type_long)
-
-/*#define INIT_FRAME_PC(x,y) init_frame_pc(x,y)*/
-/* 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", \
- "ccr", "pc", "cycles","insts","time","fp","sp"}
-
-/* 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 CCR_REGNUM 16 /* Contains processor status */
-#define PC_REGNUM 17 /* Contains program counter */
-#define CYCLES_REGNUM 18
-#define INSTS_REGNUM 19
-#define TIME_REGNUM 20
-#define FP_REGNUM 21 /* Contains fp, whatever memory model */
-#define SP_REGNUM 22 /* Conatins sp, whatever memory model */
-
-
-
-#define PTR_SIZE (BIG ? 4: 2)
-#define PTR_MASK (BIG ? 0xff00ffff : 0x0000ffff)
-
-/* 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) 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. This is assuming that floating point values are returned
- as doubles in d0/d1. */
-
-
-#define EXTRACT_RETURN_VALUE(TYPE,REGBUF,VALBUF) \
- bcopy(REGBUF + REGISTER_BYTE(2), VALBUF, TYPE_LENGTH(TYPE));
-
-/* Write into appropriate registers a function return value
- of type TYPE, given in virtual format. */
-
-#define STORE_RETURN_VALUE(TYPE,VALBUF) abort();
-
-/* 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))
-\f
-/* Describe the pointer in each stack frame to the previous stack frame
- (its caller). */
-
-/* FRAME_CHAIN takes a frame's nominal address and produces the frame's
- chain-pointer.
- In the case of the Z8000, the frame's nominal address
- is the address of a ptr sized byte word containing the calling
- frame's address. */
-
-#define FRAME_CHAIN(thisframe) frame_chain(thisframe);
-
-
-
-/* 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)
-
-#define FRAME_SAVED_PC(FRAME) frame_saved_pc(FRAME)
-
-#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
- now that the C compiler delays popping them. */
-#if !defined (FRAME_NUM_ARGS)
-#define FRAME_NUM_ARGS(val,fi) (val = -1)
-#endif
-
-/* Return number of bytes at start of arglist that are not really args. */
-
-#define FRAME_ARGS_SKIP 8
-
-
-\f
-/* Things needed for making the inferior call functions.
- It seems like every m68k based machine has almost identical definitions
- in the individual machine's configuration files. Most other cpu types
- (mips, i386, etc) have routines in their *-tdep.c files to handle this
- for most configurations. The m68k family should be able to do this as
- well. These macros can still be overridden when necessary. */
-
-/* The CALL_DUMMY macro is the sequence of instructions, as disassembled
- by gdb itself:
-
- fmovemx fp0-fp7,sp@- 0xf227 0xe0ff
- moveml d0-a5,sp@- 0x48e7 0xfffc
- clrw sp@- 0x4267
- movew ccr,sp@- 0x42e7
-
- /..* The arguments are pushed at this point by GDB;
- no code is needed in the dummy for this.
- The CALL_DUMMY_START_OFFSET gives the position of
- the following jsr instruction. *../
-
- jsr @#0x32323232 0x4eb9 0x3232 0x3232
- addal #0x69696969,sp 0xdffc 0x6969 0x6969
- trap #<your BPT_VECTOR number here> 0x4e4?
- nop 0x4e71
-
- Note this is CALL_DUMMY_LENGTH bytes (28 for the above example).
- We actually start executing at the jsr, since the pushing of the
- registers is done by PUSH_DUMMY_FRAME. If this were real code,
- the arguments for the function called by the jsr would be pushed
- between the moveml and the jsr, and we could allow it to execute through.
- But the arguments have to be pushed by GDB after the PUSH_DUMMY_FRAME is
- done, and we cannot allow the moveml to push the registers again lest
- they be taken for the arguments. */
-
-
-#define CALL_DUMMY { 0 }
-#define CALL_DUMMY_LENGTH 24 /* Size of CALL_DUMMY */
-#define CALL_DUMMY_START_OFFSET 8 /* Offset to jsr instruction*/
-
-
-/* Insert the specified number of args and function address
- into a call sequence of the above form stored at DUMMYNAME.
- We use the BFD routines to store a big-endian value of known size. */
-
-#define FIX_CALL_DUMMY(dummyname, pc, fun, nargs, args, type, gcc_p) \
-{ _do_putb32 (fun, (char *) dummyname + CALL_DUMMY_START_OFFSET + 2); \
- _do_putb32 (nargs*4, (char *) dummyname + CALL_DUMMY_START_OFFSET + 8); }
-
-/* Push an empty stack frame, to record the current PC, etc. */
-
-#define PUSH_DUMMY_FRAME { z8k_push_dummy_frame (); }
-
-extern void z8k_push_dummy_frame PARAMS ((void));
-
-extern void z8k_pop_frame PARAMS ((void));
-
-/* Discard from the stack the innermost frame, restoring all registers. */
-
-#define POP_FRAME { z8k_pop_frame (); }
-
-/* Offset from SP to first arg on stack at first instruction of a function */
-
-#define SP_ARG0 (1 * 4)
-
-#define ADDR_BITS_REMOVE(x) addr_bits_remove(x)
-#define ADDR_BITS_SET(x) addr_bits_set(x)
-int z8001_mode;
-#define BIG (z8001_mode)
-
-#define read_memory_short(x) (read_memory_integer(x,2) & 0xffff)
-
-#define NO_STD_REGS
-
-#define PRINT_REGISTER_HOOK(regno) print_register_hook(regno)
-
-
-/* Define this if the C compiler puts an underscore at the front
- of external names before giving them to the linker. */
-
-#define NAMES_HAVE_UNDERSCORE
-
-
-#define INIT_EXTRA_SYMTAB_INFO \
- z8k_set_pointer_size(objfile->obfd->arch_info->bits_per_address);
projects / deliverable / binutils-gdb.git / blobdiff