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/* Parameters for execution on a Matsushita mn10200 processor.
Copyright 1997 Free Software Foundation, Inc.
Contributed by Geoffrey Noer <noer@cygnus.com>
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. */
/* The mn10200 is little endian. */
#define TARGET_BYTE_ORDER LITTLE_ENDIAN
/* ints are only 16bits on the mn10200. */
#undef TARGET_INT_BIT
#define TARGET_INT_BIT 16
/* The mn10200 doesn't support long long types. */
#undef TARGET_LONG_LONG_BIT
#define TARGET_LONG_LONG_BIT 32
/* The mn10200 doesn't support double or long double either. */
#undef TARGET_DOUBLE_BIT
#undef TARGET_LONG_DOUBLE_BIT
#define TARGET_DOUBLE_BIT 32
#define TARGET_LONG_DOUBLE_BIT 32
/* Not strictly correct, but the machine independent code is not
ready to handle any of the basic sizes not being a power of two. */
#undef TARGET_PTR_BIT
#define TARGET_PTR_BIT 32
/* The mn10200 really has 24 bit registers but the simulator reads/writes
them as 32bit values, so we claim they're 32bits each. This may have
to be tweaked if the Matsushita emulator/board really deals with them
as 24bits each. */
#define REGISTER_SIZE 4
#define MAX_REGISTER_RAW_SIZE REGISTER_SIZE
#define NUM_REGS 11
#define REGISTER_BYTES (NUM_REGS * REGISTER_SIZE)
#define REGISTER_NAMES \
{ "d0", "d1", "d2", "d3", "a0", "a1", "a2", "sp", \
"pc", "mdr", "psw"}
#define FP_REGNUM 6
#define SP_REGNUM 7
#define PC_REGNUM 8
#define MDR_REGNUM 9
#define PSW_REGNUM 10
/* Treat the registers as 32bit values. */
#define REGISTER_VIRTUAL_TYPE(REG) builtin_type_long
#define REGISTER_BYTE(REG) ((REG) * REGISTER_SIZE)
#define REGISTER_VIRTUAL_SIZE(REG) REGISTER_SIZE
#define REGISTER_RAW_SIZE(REG) REGISTER_SIZE
#define MAX_REGISTER_VIRTUAL_SIZE REGISTER_SIZE
/* The breakpoint instruction must be the same size as te smallest
instruction in the instruction set.
The Matsushita mn10x00 processors have single byte instructions
so we need a single byte breakpoint. Matsushita hasn't defined
one, so we defined it ourselves.
0xff is the only available single byte insn left on the mn10200. */
#define BREAKPOINT {0xff}
#define FUNCTION_START_OFFSET 0
#define DECR_PC_AFTER_BREAK 0
/* Stacks grow the normal way. */
#define INNER_THAN(lhs,rhs) ((lhs) < (rhs))
#define SAVED_PC_AFTER_CALL(frame) \
(read_memory_integer (read_register (SP_REGNUM), REGISTER_SIZE) & 0xffffff)
#ifdef __STDC__
struct frame_info;
struct frame_saved_regs;
struct type;
struct value;
#endif
#define EXTRA_FRAME_INFO struct frame_saved_regs fsr; int status; int stack_size;
extern void mn10200_init_extra_frame_info PARAMS ((struct frame_info *));
#define INIT_EXTRA_FRAME_INFO(fromleaf, fi) mn10200_init_extra_frame_info (fi)
#define INIT_FRAME_PC(x,y)
extern void mn10200_frame_find_saved_regs PARAMS ((struct frame_info *,
struct frame_saved_regs *));
#define FRAME_FIND_SAVED_REGS(fi, regaddr) regaddr = fi->fsr
extern CORE_ADDR mn10200_frame_chain PARAMS ((struct frame_info *));
#define FRAME_CHAIN(fi) mn10200_frame_chain (fi)
#define FRAME_CHAIN_VALID(FP, FI) generic_frame_chain_valid (FP, FI)
extern CORE_ADDR mn10200_find_callers_reg PARAMS ((struct frame_info *, int));
extern CORE_ADDR mn10200_frame_saved_pc PARAMS ((struct frame_info *));
#define FRAME_SAVED_PC(FI) (mn10200_frame_saved_pc (FI))
/* 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) \
{ \
if (TYPE_LENGTH (TYPE) > 8) \
abort (); \
else if (TYPE_LENGTH (TYPE) > 2 && TYPE_CODE (TYPE) != TYPE_CODE_PTR) \
{ \
memcpy (VALBUF, REGBUF + REGISTER_BYTE (0), 2); \
memcpy (VALBUF + 2, REGBUF + REGISTER_BYTE (1), 2); \
} \
else if (TYPE_CODE (TYPE) == TYPE_CODE_PTR)\
{ \
memcpy (VALBUF, REGBUF + REGISTER_BYTE (4), TYPE_LENGTH (TYPE)); \
} \
else \
{ \
memcpy (VALBUF, REGBUF + REGISTER_BYTE (0), TYPE_LENGTH (TYPE)); \
} \
}
#define EXTRACT_STRUCT_VALUE_ADDRESS(REGBUF) \
extract_address (REGBUF + REGISTER_BYTE (4), \
REGISTER_RAW_SIZE (4))
#define STORE_RETURN_VALUE(TYPE, VALBUF) \
{ \
if (TYPE_LENGTH (TYPE) > 8) \
abort (); \
else if (TYPE_LENGTH (TYPE) > 2 && TYPE_CODE (TYPE) != TYPE_CODE_PTR) \
{ \
write_register_bytes (REGISTER_BYTE (0), VALBUF, 2); \
write_register_bytes (REGISTER_BYTE (1), VALBUF + 2, 2); \
} \
else if (TYPE_CODE (TYPE) == TYPE_CODE_PTR)\
{ \
write_register_bytes (REGISTER_BYTE (4), VALBUF, TYPE_LENGTH (TYPE)); \
} \
else \
{ \
write_register_bytes (REGISTER_BYTE (0), VALBUF, TYPE_LENGTH (TYPE)); \
} \
}
#define STORE_STRUCT_RETURN(STRUCT_ADDR, SP) \
(SP) = mn10200_store_struct_return (STRUCT_ADDR, SP)
extern CORE_ADDR mn10200_skip_prologue PARAMS ((CORE_ADDR));
#define SKIP_PROLOGUE(pc) pc = mn10200_skip_prologue (pc)
#define FRAME_ARGS_SKIP 0
#define FRAME_ARGS_ADDRESS(fi) ((fi)->frame)
#define FRAME_LOCALS_ADDRESS(fi) ((fi)->frame)
#define FRAME_NUM_ARGS(val, fi) ((val) = -1)
extern void mn10200_pop_frame PARAMS ((struct frame_info *));
#define POP_FRAME mn10200_pop_frame (get_current_frame ())
#define USE_GENERIC_DUMMY_FRAMES
#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 mn10200_push_return_address PARAMS ((CORE_ADDR, CORE_ADDR));
#define PUSH_RETURN_ADDRESS(PC, SP) mn10200_push_return_address (PC, SP)
#define PUSH_DUMMY_FRAME generic_push_dummy_frame ()
extern CORE_ADDR
mn10200_push_arguments PARAMS ((int, struct value **, CORE_ADDR,
unsigned char, CORE_ADDR));
#define PUSH_ARGUMENTS(NARGS, ARGS, SP, STRUCT_RETURN, STRUCT_ADDR) \
(SP) = mn10200_push_arguments (NARGS, ARGS, SP, STRUCT_RETURN, STRUCT_ADDR)
#define PC_IN_CALL_DUMMY(PC, SP, FP) generic_pc_in_call_dummy (PC, SP)
#define REG_STRUCT_HAS_ADDR(gcc_p,TYPE) \
(TYPE_LENGTH (TYPE) > 8)
extern use_struct_convention_fn mn10200_use_struct_convention;
#define USE_STRUCT_CONVENTION(GCC_P, TYPE) mn10200_use_struct_convention (GCC_P, TYPE)
/* Override the default get_saved_register function with
one that takes account of generic CALL_DUMMY frames. */
#define GET_SAVED_REGISTER
/* Define this for Wingdb */
#define TARGET_MN10200
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