229 lines
7.2 KiB
C
229 lines
7.2 KiB
C
/* Target-specific definition for the Mitsubishi D10V
|
||
Copyright (C) 1996 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., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */
|
||
|
||
/* Contributed by Martin Hunt, hunt@cygnus.com */
|
||
|
||
|
||
#define GDB_TARGET_IS_D10V
|
||
|
||
|
||
/* 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 d10v_skip_prologue ();
|
||
#define SKIP_PROLOGUE(ip) \
|
||
{(ip) = d10v_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) (read_register(LR_REGNUM) << 2 )
|
||
|
||
/* Stack grows downward. */
|
||
|
||
#define INNER_THAN <
|
||
|
||
/* for a breakpoint, use "dbt || nop" */
|
||
#define BREAKPOINT {0x2f, 0x90, 0x5e, 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 4
|
||
|
||
#define REGISTER_NAMES \
|
||
{ "r0", "r1", "r2", "r3", "r4", "r5", "r6", "r7", \
|
||
"r8", "r9", "r10","r11","r12", "r13", "r14","sp",\
|
||
"psw","bpsw","pc","bpc", "cr4", "cr5", "cr6", "rpt_c",\
|
||
"rpt_s","rpt_e", "mod_s", "mod_e", "cr12", "cr13", "iba", "cr15",\
|
||
"a0", "a1"\
|
||
}
|
||
|
||
#define NUM_REGS 34
|
||
|
||
/* 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_REGNUM 0
|
||
#define LR_REGNUM 13
|
||
#define SP_REGNUM 15
|
||
#define FP_REGNUM 11
|
||
#define PC_REGNUM 18
|
||
#define PSW_REGNUM 16
|
||
#define A0_REGNUM 32
|
||
|
||
/* Say how much memory is needed to store a copy of the register set */
|
||
#define REGISTER_BYTES ((NUM_REGS-2)*2+16)
|
||
|
||
/* Index within `registers' of the first byte of the space for
|
||
register N. */
|
||
|
||
#define REGISTER_BYTE(N) \
|
||
( ((N) > A0_REGNUM) ? ( ((N)-A0_REGNUM)*8 + A0_REGNUM*2 ) : ((N) * 2) )
|
||
|
||
/* Number of bytes of storage in the actual machine representation
|
||
for register N. */
|
||
|
||
#define REGISTER_RAW_SIZE(N) ( ((N) >= A0_REGNUM) ? 8 : 2 )
|
||
|
||
/* Number of bytes of storage in the program's representation
|
||
for register N. */
|
||
#define REGISTER_VIRTUAL_SIZE(N) ( ((N) >= A0_REGNUM) ? 8 : 2 )
|
||
|
||
/* Largest value REGISTER_RAW_SIZE can have. */
|
||
|
||
#define MAX_REGISTER_RAW_SIZE 8
|
||
|
||
/* Largest value REGISTER_VIRTUAL_SIZE can have. */
|
||
|
||
#define MAX_REGISTER_VIRTUAL_SIZE 8
|
||
|
||
/* Return the GDB type object for the "standard" data type
|
||
of data in register N. */
|
||
|
||
#define REGISTER_VIRTUAL_TYPE(N) \
|
||
( ((N) < A0_REGNUM ) ? builtin_type_short : builtin_type_long_long)
|
||
|
||
|
||
/* 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 R2 */
|
||
|
||
#define STORE_STRUCT_RETURN(ADDR, SP) \
|
||
{ write_register (2, (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) \
|
||
memcpy (VALBUF, (char *)(REGBUF), TYPE_LENGTH(TYPE))
|
||
|
||
|
||
/* Write into appropriate registers a function return value
|
||
of type TYPE, given in virtual format.
|
||
|
||
Things always get returned in R2/R3 */
|
||
|
||
#define STORE_RETURN_VALUE(TYPE,VALBUF) \
|
||
write_register_bytes (REGISTER_BYTE(2), 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; \
|
||
int size;
|
||
|
||
#define INIT_EXTRA_FRAME_INFO(fromleaf, fi) \
|
||
d10v_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)
|
||
|
||
#define FRAME_CHAIN(FRAME) d10v_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) \
|
||
d10v_frame_find_saved_regs(frame_info, &(frame_saved_regs))
|
||
|
||
#define NAMES_HAVE_UNDERSCORE
|
||
|
||
typedef unsigned short INSN_WORD;
|
||
|
||
#define ADDR_BITS_REMOVE(addr) ((addr))
|
||
|
||
#define CALL_DUMMY_LENGTH 10
|
||
|
||
/* Discard from the stack the innermost frame,
|
||
restoring all saved registers. */
|
||
|
||
#define POP_FRAME d10v_pop_frame();
|
||
|
||
#define REGISTER_SIZE 2
|
||
|
||
# ifdef CC_HAS_LONG_LONG
|
||
# define LONGEST long long
|
||
# else
|
||
# define LONGEST long
|
||
# endif
|
||
|
||
void d10v_write_register_pid PARAMS (( int regno, LONGEST val, int pid));
|
||
CORE_ADDR d10v_read_register_pid PARAMS ((int regno, int pid));
|
||
|
||
#define TARGET_READ_PC(pid) d10v_read_register_pid (PC_REGNUM, pid)
|
||
#define TARGET_WRITE_PC(val,pid) d10v_write_register_pid (PC_REGNUM, val, pid)
|
||
|
||
|
||
/* Number of bits in the appropriate type */
|
||
#define TARGET_INT_BIT (2 * TARGET_CHAR_BIT)
|
||
#define TARGET_PTR_BIT (2 * TARGET_CHAR_BIT)
|
||
#define TARGET_DOUBLE_BIT (4 * TARGET_CHAR_BIT)
|
||
#define TARGET_LONG_DOUBLE_BIT (8 * TARGET_CHAR_BIT)
|