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/* 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 - moved to gdbarch.h */
/* 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
/* these are the addresses the D10V-EVA board maps data */
/* and instruction memory to. */
#define DMEM_START 0x0000000
#define IMEM_START 0x1000000
#define STACK_START 0x0007ffe
#ifdef __STDC__ /* Forward decls for prototypes */
struct frame_info;
struct frame_saved_regs;
struct type;
struct value;
#endif
/* Advance PC across any function entry prologue instructions
to reach some "real" code. */
extern CORE_ADDR d10v_skip_prologue ();
#define SKIP_PROLOGUE(ip) (d10v_skip_prologue (ip))
/* Stack grows downward. */
#define INNER_THAN(lhs,rhs) (core_addr_lessthan ((lhs), (rhs)))
/* for a breakpoint, use "dbt || nop" */
extern breakpoint_from_pc_fn d10v_breakpoint_from_pc;
#define BREAKPOINT_FROM_PC(PCPTR,LENPTR) (d10v_breakpoint_from_pc ((PCPTR), (LENPTR)))
/* 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
extern char *d10v_register_name PARAMS ((int reg_nr));
#define REGISTER_NAME(NR) (d10v_register_name (NR))
#define NUM_REGS 37
/* 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 IMAP0_REGNUM 32
#define IMAP1_REGNUM 33
#define DMAP_REGNUM 34
#define A0_REGNUM 35
/* 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. */
extern int d10v_register_byte PARAMS ((int reg_nr));
#define REGISTER_BYTE(N) (d10v_register_byte (N))
/* Number of bytes of storage in the actual machine representation
for register N. */
extern int d10v_register_raw_size PARAMS ((int reg_nr));
#define REGISTER_RAW_SIZE(N) (d10v_register_raw_size (N))
/* Number of bytes of storage in the program's representation
for register N. */
extern int d10v_register_virtual_size PARAMS ((int reg_nr));
#define REGISTER_VIRTUAL_SIZE(N) (d10v_register_virtual_size (N))
/* 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. */
extern struct type *d10v_register_virtual_type PARAMS ((int reg_nr));
#define REGISTER_VIRTUAL_TYPE(N) (d10v_register_virtual_type (N))
/* convert $pc and $sp to/from virtual addresses */
#define REGISTER_CONVERTIBLE(N) ((N) == PC_REGNUM || (N) == SP_REGNUM)
#define REGISTER_CONVERT_TO_VIRTUAL(REGNUM,TYPE,FROM,TO) \
{ \
ULONGEST x = extract_unsigned_integer ((FROM), REGISTER_RAW_SIZE (REGNUM)); \
if (REGNUM == PC_REGNUM) x = (x << 2) | IMEM_START; \
else x |= DMEM_START; \
store_unsigned_integer ((TO), TYPE_LENGTH(TYPE), x); \
}
#define REGISTER_CONVERT_TO_RAW(TYPE,REGNUM,FROM,TO) \
{ \
ULONGEST x = extract_unsigned_integer ((FROM), TYPE_LENGTH(TYPE)); \
x &= 0x3ffff; \
if (REGNUM == PC_REGNUM) x >>= 2; \
store_unsigned_integer ((TO), 2, x); \
}
extern CORE_ADDR d10v_make_daddr PARAMS ((CORE_ADDR x));
#define D10V_MAKE_DADDR(x) (d10v_make_daddr (x))
extern CORE_ADDR d10v_make_iaddr PARAMS ((CORE_ADDR x));
#define D10V_MAKE_IADDR(x) (d10v_make_iaddr (x))
extern int d10v_daddr_p PARAMS ((CORE_ADDR x));
#define D10V_DADDR_P(X) (d10v_daddr_p (X))
extern int d10v_iaddr_p PARAMS ((CORE_ADDR x));
#define D10V_IADDR_P(X) (d10v_iaddr_p (X))
extern CORE_ADDR d10v_convert_daddr_to_raw PARAMS ((CORE_ADDR x));
#define D10V_CONVERT_DADDR_TO_RAW(X) (d10v_convert_daddr_to_raw (X))
extern CORE_ADDR d10v_convert_iaddr_to_raw PARAMS ((CORE_ADDR x));
#define D10V_CONVERT_IADDR_TO_RAW(X) (d10v_convert_iaddr_to_raw (X))
#define ARG1_REGNUM R0_REGNUM
#define ARGN_REGNUM 3
#define RET1_REGNUM R0_REGNUM
/* 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 the first Argument
register. */
extern void d10v_store_struct_return PARAMS ((CORE_ADDR addr, CORE_ADDR sp));
#define STORE_STRUCT_RETURN(ADDR, SP) d10v_store_struct_return ((ADDR), (SP))
/* Write into appropriate registers a function return value
of type TYPE, given in virtual format.
Things always get returned in RET1_REGNUM, RET2_REGNUM, ... */
extern void d10v_store_return_value PARAMS ((struct type *type, char *valbuf));
#define STORE_RETURN_VALUE(TYPE,VALBUF) d10v_store_return_value ((TYPE), (VALBUF))
/* 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). */
extern CORE_ADDR d10v_extract_struct_value_address PARAMS ((char *regbuf));
#define EXTRACT_STRUCT_VALUE_ADDRESS(REGBUF) (d10v_extract_struct_value_address ((REGBUF)))
/* Should we use EXTRACT_STRUCT_VALUE_ADDRESS instead of
EXTRACT_RETURN_VALUE? GCC_P is true if compiled with gcc
and TYPE is the type (which is known to be struct, union or array).
The d10v returns anything less than 8 bytes in size in
registers. */
extern use_struct_convention_fn d10v_use_struct_convention;
#define USE_STRUCT_CONVENTION(gcc_p, type) d10v_use_struct_convention (gcc_p, type)
/* 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 frameless; \
int size;
#define INIT_EXTRA_FRAME_INFO(fromleaf, fi) \
d10v_init_extra_frame_info(fromleaf, fi)
extern void d10v_init_extra_frame_info PARAMS (( int fromleaf, struct frame_info *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_look_for_prologue (FI))
extern CORE_ADDR d10v_frame_chain PARAMS ((struct frame_info *frame));
#define FRAME_CHAIN(FRAME) d10v_frame_chain(FRAME)
extern int d10v_frame_chain_valid PARAMS ((CORE_ADDR, struct frame_info *));
#define FRAME_CHAIN_VALID(chain, thisframe) d10v_frame_chain_valid (chain, thisframe)
extern CORE_ADDR d10v_frame_saved_pc PARAMS ((struct frame_info *fi));
#define FRAME_SAVED_PC(fi) (d10v_frame_saved_pc ((fi)))
extern CORE_ADDR d10v_frame_args_address PARAMS ((struct frame_info *fi));
#define FRAME_ARGS_ADDRESS(fi) (d10v_frame_args_address ((fi)))
extern CORE_ADDR d10v_frame_locals_address PARAMS ((struct frame_info *fi));
#define FRAME_LOCALS_ADDRESS(fi) (d10v_frame_locals_address ((fi)))
/* Immediately after a function call, return the saved pc. We can't */
/* use frame->return_pc beause that is determined by reading R13 off the */
/*stack and that may not be written yet. */
extern CORE_ADDR d10v_saved_pc_after_call PARAMS ((struct frame_info *frame));
#define SAVED_PC_AFTER_CALL(frame) (d10v_saved_pc_after_call ((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(fi) (-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))
extern void d10v_frame_find_saved_regs PARAMS ((struct frame_info *, struct frame_saved_regs *));
#define NAMES_HAVE_UNDERSCORE
/* DUMMY FRAMES. Need these to support inferior function calls. They
work like this on D10V: First we set a breakpoint at 0 or __start.
Then we push all the registers onto the stack. Then put the
function arguments in the proper registers and set r13 to our
breakpoint address. Finally, the PC is set to the start of the
function being called (no JSR/BSR insn). When it hits the
breakpoint, clear the break point and pop the old register contents
off the stack. */
extern void d10v_pop_frame PARAMS ((struct frame_info *frame));
#define POP_FRAME generic_pop_current_frame (d10v_pop_frame)
#define USE_GENERIC_DUMMY_FRAMES 1
#define CALL_DUMMY {0}
#define CALL_DUMMY_START_OFFSET (0)
#define CALL_DUMMY_BREAKPOINT_OFFSET (0)
#define CALL_DUMMY_LOCATION AT_ENTRY_POINT
#define FIX_CALL_DUMMY(DUMMY, START, FUNADDR, NARGS, ARGS, TYPE, GCCP)
#define CALL_DUMMY_ADDRESS() entry_point_address ()
extern CORE_ADDR d10v_push_return_address PARAMS ((CORE_ADDR pc, CORE_ADDR sp));
#define PUSH_RETURN_ADDRESS(PC, SP) d10v_push_return_address (PC, SP)
#define PC_IN_CALL_DUMMY(PC, SP, FP) generic_pc_in_call_dummy (PC, SP, FP)
/* #define PC_IN_CALL_DUMMY(pc, sp, frame_address) ( pc == IMEM_START + 4 ) */
#define PUSH_DUMMY_FRAME generic_push_dummy_frame ()
/* override the default get_saved_register function with one that
takes account of generic CALL_DUMMY frames */
#define GET_SAVED_REGISTER(raw_buffer, optimized, addrp, frame, regnum, lval) \
generic_get_saved_register (raw_buffer, optimized, addrp, frame, regnum, lval)
#define PUSH_ARGUMENTS(nargs, args, sp, struct_return, struct_addr) \
(d10v_push_arguments((nargs), (args), (sp), (struct_return), (struct_addr)))
extern CORE_ADDR d10v_push_arguments PARAMS ((int, struct value **, CORE_ADDR, int, CORE_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) \
d10v_extract_return_value(TYPE, REGBUF, VALBUF)
extern void
d10v_extract_return_value PARAMS ((struct type *, char *, char *));
#define REGISTER_SIZE 2
#ifdef CC_HAS_LONG_LONG
# define LONGEST long long
#else
# define LONGEST long
#endif
#define ULONGEST unsigned LONGEST
void d10v_write_pc PARAMS ((CORE_ADDR val, int pid));
CORE_ADDR d10v_read_pc PARAMS ((int pid));
void d10v_write_sp PARAMS ((CORE_ADDR val));
CORE_ADDR d10v_read_sp PARAMS ((void));
void d10v_write_fp PARAMS ((CORE_ADDR val));
CORE_ADDR d10v_read_fp PARAMS ((void));
#define TARGET_READ_PC(pid) d10v_read_pc (pid)
#define TARGET_WRITE_PC(val,pid) d10v_write_pc (val, pid)
#define TARGET_READ_FP() d10v_read_fp ()
#define TARGET_WRITE_FP(val) d10v_write_fp (val)
#define TARGET_READ_SP() d10v_read_sp ()
#define TARGET_WRITE_SP(val) d10v_write_sp (val)
/* Number of bits in the appropriate type */
#define TARGET_INT_BIT (2 * TARGET_CHAR_BIT)
#define TARGET_PTR_BIT (4 * TARGET_CHAR_BIT)
#define TARGET_DOUBLE_BIT (4 * TARGET_CHAR_BIT)
#define TARGET_LONG_DOUBLE_BIT (8 * TARGET_CHAR_BIT)
/* For the d10v when talking to the remote d10v board, GDB addresses
need to be translated into a format that the d10v rom monitor
understands. */
extern void remote_d10v_translate_xfer_address PARAMS ((CORE_ADDR gdb_addr, int gdb_len, CORE_ADDR *rem_addr, int *rem_len));
#define REMOTE_TRANSLATE_XFER_ADDRESS(GDB_ADDR, GDB_LEN, REM_ADDR, REM_LEN) \
remote_d10v_translate_xfer_address ((GDB_ADDR), (GDB_LEN), (REM_ADDR), (REM_LEN))
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