294 lines
9.4 KiB
C
294 lines
9.4 KiB
C
/* Target-specific definition for a Hitachi Super-H.
|
|
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., 59 Temple Place - Suite 330,
|
|
Boston, MA 02111-1307, USA. */
|
|
|
|
/* Contributed by Steve Chamberlain sac@cygnus.com */
|
|
|
|
struct frame_info;
|
|
struct frame_saved_regs;
|
|
struct value;
|
|
struct type;
|
|
|
|
#define GDB_TARGET_IS_SH
|
|
|
|
#define IEEE_FLOAT (1)
|
|
|
|
/* Define the bit, byte, and word ordering of the machine. */
|
|
|
|
#define TARGET_BYTE_ORDER_SELECTABLE
|
|
|
|
|
|
/* 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 (CORE_ADDR);
|
|
#define SKIP_PROLOGUE(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)))
|
|
|
|
/* Stack grows downward. */
|
|
|
|
#define INNER_THAN(lhs,rhs) ((lhs) < (rhs))
|
|
|
|
/* Illegal instruction - used by the simulator for breakpoint
|
|
detection */
|
|
|
|
#define BREAKPOINT {0xc3, 0xc3} /* 0xc3c3 is trapa #c3, and it works in big
|
|
and little endian modes */
|
|
|
|
#define BIG_REMOTE_BREAKPOINT { 0xc3, 0x20 }
|
|
#define LITTLE_REMOTE_BREAKPOINT { 0x20, 0xc3 }
|
|
|
|
/* 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
|
|
|
|
/* 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
|
|
|
|
/* Return the GDB type object for the "standard" data type
|
|
of data in register N. */
|
|
|
|
#define REGISTER_VIRTUAL_TYPE(N) \
|
|
(((((N) >= FP0_REGNUM && (N) <= FP15_REGNUM) \
|
|
|| (N) == FPUL_REGNUM) \
|
|
&& TARGET_ARCHITECTURE->mach != bfd_mach_sh_dsp \
|
|
&& TARGET_ARCHITECTURE->mach != bfd_mach_sh3_dsp) \
|
|
? builtin_type_float : builtin_type_int)
|
|
|
|
/* Initializer for an array of names of registers.
|
|
Entries beyond the first NUM_REGS are ignored. */
|
|
|
|
extern char **sh_register_names;
|
|
#define REGISTER_NAME(i) sh_register_names[i]
|
|
|
|
#define NUM_REGS 59
|
|
|
|
/* 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 STRUCT_RETURN_REGNUM 2
|
|
#define ARG0_REGNUM 4
|
|
#define ARGLAST_REGNUM 7
|
|
#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 SR_REGNUM 22
|
|
#define FPUL_REGNUM 23
|
|
#define FPSCR_REGNUM 24
|
|
#define DSR_REGNUM 24
|
|
#define FP0_REGNUM 25
|
|
#define FP15_REGNUM 40
|
|
#define A0G_REGNUM 25
|
|
#define A0_REGNUM 26
|
|
#define A1G_REGNUM 27
|
|
#define A1_REGNUM 28
|
|
#define M0_REGNUM 29
|
|
#define M1_REGNUM 30
|
|
#define X0_REGNUM 31
|
|
#define X1_REGNUM 32
|
|
#define Y0_REGNUM 33
|
|
#define Y1_REGNUM 34
|
|
#define MOD_REGNUM 40
|
|
#define SSR_REGNUM 41
|
|
#define SPC_REGNUM 42
|
|
#define R0B0_REGNUM 43
|
|
#define R0B1_REGNUM 51
|
|
#define RS_REGNUM 43
|
|
#define RE_REGNUM 44
|
|
#define R0B_REGNUM 51
|
|
|
|
#define NUM_REALREGS 59
|
|
|
|
/* 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 R0 */
|
|
|
|
#define STORE_STRUCT_RETURN(ADDR, SP) \
|
|
{ write_register (STRUCT_RETURN_REGNUM, (ADDR)); }
|
|
|
|
extern use_struct_convention_fn sh_use_struct_convention;
|
|
#define USE_STRUCT_CONVENTION(gcc_p, type) sh_use_struct_convention (gcc_p, type)
|
|
|
|
/* 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. */
|
|
|
|
extern void sh_extract_return_value (struct type *, void *, void *);
|
|
#define EXTRACT_RETURN_VALUE(TYPE,REGBUF,VALBUF) \
|
|
sh_extract_return_value (TYPE, REGBUF, VALBUF)
|
|
|
|
/* Write into appropriate registers a function return value
|
|
of type TYPE, given in virtual format.
|
|
|
|
Things always get returned in R0/R1 */
|
|
|
|
#define STORE_RETURN_VALUE(TYPE,VALBUF) \
|
|
write_register_bytes (REGISTER_BYTE(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) \
|
|
extract_address (REGBUF, REGISTER_RAW_SIZE (0))
|
|
|
|
|
|
/* 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 leaf_function; \
|
|
int f_offset;
|
|
|
|
#define INIT_EXTRA_FRAME_INFO(fromleaf, fi) \
|
|
sh_init_extra_frame_info(fromleaf, fi)
|
|
extern void sh_init_extra_frame_info (int, struct frame_info *);
|
|
|
|
/* 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))
|
|
|
|
#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(fi) (-1)
|
|
|
|
/* Return number of bytes at start of arglist that are not really args. */
|
|
|
|
#define FRAME_ARGS_SKIP 0
|
|
|
|
extern void sh_frame_find_saved_regs (struct frame_info *fi,
|
|
struct frame_saved_regs *fsr);
|
|
|
|
/* 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) \
|
|
sh_frame_find_saved_regs(frame_info, &(frame_saved_regs))
|
|
|
|
typedef unsigned short INSN_WORD;
|
|
|
|
extern CORE_ADDR sh_push_arguments (int nargs,
|
|
struct value **args,
|
|
CORE_ADDR sp,
|
|
unsigned char struct_return,
|
|
CORE_ADDR struct_addr);
|
|
|
|
#define USE_GENERIC_DUMMY_FRAMES 1
|
|
#define CALL_DUMMY {0}
|
|
#define CALL_DUMMY_LENGTH (0)
|
|
#define CALL_DUMMY_START_OFFSET (0)
|
|
#define CALL_DUMMY_BREAKPOINT_OFFSET (0)
|
|
#define FIX_CALL_DUMMY(DUMMY, STARTADDR, FUNADDR, NARGS, ARGS, TYPE, GCCP)
|
|
#define CALL_DUMMY_LOCATION AT_ENTRY_POINT
|
|
#define CALL_DUMMY_ADDRESS() entry_point_address ()
|
|
extern CORE_ADDR sh_push_return_address (CORE_ADDR, CORE_ADDR);
|
|
#define PUSH_RETURN_ADDRESS(PC, SP) sh_push_return_address (PC, SP)
|
|
|
|
|
|
extern CORE_ADDR sh_frame_chain (struct frame_info *);
|
|
#define FRAME_CHAIN(FRAME) sh_frame_chain(FRAME)
|
|
#define PUSH_DUMMY_FRAME generic_push_dummy_frame ()
|
|
#define FRAME_CHAIN_VALID(FP, FRAME) generic_file_frame_chain_valid (FP, FRAME)
|
|
#define PC_IN_CALL_DUMMY(PC, SP, FP) generic_pc_in_call_dummy (PC, SP, FP)
|
|
#define PUSH_ARGUMENTS(NARGS, ARGS, SP, STRUCT_RETURN, STRUCT_ADDR) \
|
|
(sh_push_arguments (NARGS, ARGS, SP, STRUCT_RETURN, STRUCT_ADDR))
|
|
|
|
/* override the standard 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)
|
|
|
|
/* Discard from the stack the innermost frame, restoring all saved
|
|
registers. */
|
|
|
|
extern void sh_pop_frame (void);
|
|
#define POP_FRAME sh_pop_frame();
|
|
|
|
#define NOP {0x20, 0x0b}
|
|
|
|
#define REGISTER_SIZE 4
|
|
|
|
#define COERCE_FLOAT_TO_DOUBLE(formal, actual) (1)
|
|
|
|
#define BELIEVE_PCC_PROMOTION 1
|
|
|
|
/* Need this for WinGDB. See gdb/mswin/{regdoc.h, gdbwin.c, gui.cpp}. */
|
|
#define TARGET_SH
|