1 /* Parameters for execution on a Matsushita mn10300 processor.
2 Copyright 1996, 1997 Free Software Foundation, Inc.
4 Contributed by Geoffrey Noer <noer@cygnus.com>
6 This file is part of GDB.
8 This program is free software; you can redistribute it and/or modify
9 it under the terms of the GNU General Public License as published by
10 the Free Software Foundation; either version 2 of the License, or
11 (at your option) any later version.
13 This program is distributed in the hope that it will be useful,
14 but WITHOUT ANY WARRANTY; without even the implied warranty of
15 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
16 GNU General Public License for more details.
18 You should have received a copy of the GNU General Public License
19 along with this program; if not, write to the Free Software
20 Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */
22 /* The mn10300 is little endian. */
23 #define TARGET_BYTE_ORDER LITTLE_ENDIAN
25 /* All registers are 32bits (phew!). */
26 #define REGISTER_SIZE 4
27 #define MAX_REGISTER_RAW_SIZE 4
30 #define REGISTER_VIRTUAL_TYPE(REG) builtin_type_int
32 #define REGISTER_BYTE(REG) ((REG) * 4)
33 #define REGISTER_VIRTUAL_SIZE(REG) 4
34 #define REGISTER_RAW_SIZE(REG) 4
36 #define MAX_REGISTER_VIRTUAL_SIZE 4
38 #define REGISTER_BYTES (NUM_REGS * REGISTER_SIZE)
40 #define REGISTER_NAMES \
41 { "d0", "d1", "d2", "d3", "a0", "a1", "a2", "a3", \
42 "sp", "pc", "mdr", "psw", "lir", "lar" }
53 /* The breakpoint instruction must be the same size as the smallest
54 instruction in the instruction set.
56 The Matsushita mn10x00 processors have single byte instructions
57 so we need a single byte breakpoint. Matsushita hasn't defined
58 one, so we defined it ourselves. */
59 #define BREAKPOINT {0xff}
61 #define FUNCTION_START_OFFSET 0
63 #define DECR_PC_AFTER_BREAK 0
67 #define SAVED_PC_AFTER_CALL(frame) \
68 read_memory_integer (read_register (SP_REGNUM), 4)
72 struct frame_saved_regs
;
77 #define EXTRA_FRAME_INFO struct frame_saved_regs fsr; int status; int stack_size;
79 extern void mn10300_init_extra_frame_info
PARAMS ((struct frame_info
*));
80 #define INIT_EXTRA_FRAME_INFO(fromleaf, fi) mn10300_init_extra_frame_info (fi)
81 #define INIT_FRAME_PC /* Not necessary */
83 extern void mn10300_frame_find_saved_regs
PARAMS ((struct frame_info
*,
84 struct frame_saved_regs
*));
85 #define FRAME_FIND_SAVED_REGS(fi, regaddr) regaddr = fi->fsr
87 extern CORE_ADDR mn10300_frame_chain
PARAMS ((struct frame_info
*));
88 #define FRAME_CHAIN(fi) mn10300_frame_chain (fi)
89 #define FRAME_CHAIN_VALID(FP, FI) generic_frame_chain_valid (FP, FI)
91 extern CORE_ADDR mn10300_find_callers_reg
PARAMS ((struct frame_info
*, int));
92 extern CORE_ADDR mn10300_frame_saved_pc
PARAMS ((struct frame_info
*));
93 #define FRAME_SAVED_PC(FI) (mn10300_frame_saved_pc (FI))
95 /* Extract from an array REGBUF containing the (raw) register state
96 a function return value of type TYPE, and copy that, in virtual format,
99 #define EXTRACT_RETURN_VALUE(TYPE, REGBUF, VALBUF) \
100 if (TYPE_CODE (TYPE) == TYPE_CODE_PTR) \
101 memcpy (VALBUF, REGBUF + REGISTER_BYTE (4), TYPE_LENGTH (TYPE)); \
103 memcpy (VALBUF, REGBUF + REGISTER_BYTE (0), TYPE_LENGTH (TYPE));
106 #define EXTRACT_STRUCT_VALUE_ADDRESS(REGBUF) \
107 extract_address (REGBUF + REGISTER_BYTE (4), \
108 REGISTER_RAW_SIZE (4))
110 #define STORE_RETURN_VALUE(TYPE, VALBUF) \
111 if (TYPE_CODE (TYPE) == TYPE_CODE_PTR) \
112 write_register_bytes(REGISTER_BYTE (4), VALBUF, TYPE_LENGTH (TYPE)); \
114 write_register_bytes(REGISTER_BYTE (0), VALBUF, TYPE_LENGTH (TYPE));
116 #define STORE_STRUCT_RETURN(STRUCT_ADDR, SP) \
117 (SP) = mn10300_store_struct_return (STRUCT_ADDR, SP)
119 extern CORE_ADDR mn10300_skip_prologue
PARAMS ((CORE_ADDR
));
120 #define SKIP_PROLOGUE(pc) pc = mn10300_skip_prologue (pc)
122 #define FRAME_ARGS_SKIP 0
124 #define FRAME_ARGS_ADDRESS(fi) ((fi)->frame)
125 #define FRAME_LOCALS_ADDRESS(fi) ((fi)->frame)
126 #define FRAME_NUM_ARGS(val, fi) ((val) = -1)
128 extern void mn10300_pop_frame
PARAMS ((struct frame_info
*));
129 #define POP_FRAME mn10300_pop_frame (get_current_frame ())
131 #define USE_GENERIC_DUMMY_FRAMES
132 #define CALL_DUMMY {0}
133 #define CALL_DUMMY_START_OFFSET (0)
134 #define CALL_DUMMY_BREAKPOINT_OFFSET (0)
135 #define CALL_DUMMY_LOCATION AT_ENTRY_POINT
136 #define FIX_CALL_DUMMY(DUMMY, START, FUNADDR, NARGS, ARGS, TYPE, GCCP)
137 #define CALL_DUMMY_ADDRESS() entry_point_address ()
139 extern CORE_ADDR mn10300_push_return_address
PARAMS ((CORE_ADDR
, CORE_ADDR
));
140 #define PUSH_RETURN_ADDRESS(PC, SP) mn10300_push_return_address (PC, SP)
142 #define PUSH_DUMMY_FRAME generic_push_dummy_frame ()
145 mn10300_push_arguments
PARAMS ((int, struct value
**, CORE_ADDR
,
146 unsigned char, CORE_ADDR
));
147 #define PUSH_ARGUMENTS(NARGS, ARGS, SP, STRUCT_RETURN, STRUCT_ADDR) \
148 (SP) = mn10300_push_arguments (NARGS, ARGS, SP, STRUCT_RETURN, STRUCT_ADDR)
150 #define PC_IN_CALL_DUMMY(PC, SP, FP) generic_pc_in_call_dummy (PC, SP)
152 #define REG_STRUCT_HAS_ADDR(gcc_p,TYPE) \
153 (TYPE_LENGTH (TYPE) > 8)
155 #define USE_STRUCT_CONVENTION(GCC_P, TYPE) \
156 (TYPE_NFIELDS (TYPE) > 1 || TYPE_LENGTH (TYPE) > 8)
158 /* override the default get_saved_register function with
159 one that takes account of generic CALL_DUMMY frames */
160 #define GET_SAVED_REGISTER
162 /* Define this for Wingdb */
164 #define TARGET_MN10300