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_DEFAULT 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 extern char **mn10300_register_names
;
41 #define REGISTER_NAME(i) mn10300_register_names[i]
54 /* Pseudo register that contains true address of executing stack frame */
57 /* BREAKPOINT_FROM_PC uses the program counter value to determine the
58 breakpoint that should be used */
59 extern breakpoint_from_pc_fn mn10300_breakpoint_from_pc
;
60 #define BREAKPOINT_FROM_PC(pcptr, lenptr) mn10300_breakpoint_from_pc (pcptr, lenptr)
62 #define FUNCTION_START_OFFSET 0
64 #define DECR_PC_AFTER_BREAK 0
66 #define INNER_THAN(lhs,rhs) ((lhs) < (rhs))
68 #define SAVED_PC_AFTER_CALL(frame) \
69 read_memory_integer (read_register (SP_REGNUM), 4)
77 extern void mn10300_init_extra_frame_info
PARAMS ((struct frame_info
*));
78 #define INIT_EXTRA_FRAME_INFO(fromleaf, fi) mn10300_init_extra_frame_info (fi)
79 #define INIT_FRAME_PC /* Not necessary */
81 #define FRAME_INIT_SAVED_REGS(fi) /* handled by init_extra_frame_info */
83 extern CORE_ADDR mn10300_frame_chain
PARAMS ((struct frame_info
*));
84 #define FRAME_CHAIN(fi) mn10300_frame_chain (fi)
85 #define FRAME_CHAIN_VALID(FP, FI) generic_frame_chain_valid (FP, FI)
87 extern CORE_ADDR mn10300_find_callers_reg
PARAMS ((struct frame_info
*, int));
88 extern CORE_ADDR mn10300_frame_saved_pc
PARAMS ((struct frame_info
*));
89 #define FRAME_SAVED_PC(FI) (mn10300_frame_saved_pc (FI))
91 /* Extract from an array REGBUF containing the (raw) register state
92 a function return value of type TYPE, and copy that, in virtual format,
95 #define EXTRACT_RETURN_VALUE(TYPE, REGBUF, VALBUF) \
96 if (TYPE_CODE (TYPE) == TYPE_CODE_PTR) \
97 memcpy (VALBUF, REGBUF + REGISTER_BYTE (4), TYPE_LENGTH (TYPE)); \
99 memcpy (VALBUF, REGBUF + REGISTER_BYTE (0), TYPE_LENGTH (TYPE));
102 #define EXTRACT_STRUCT_VALUE_ADDRESS(REGBUF) \
103 extract_address (REGBUF + REGISTER_BYTE (4), \
104 REGISTER_RAW_SIZE (4))
106 #define STORE_RETURN_VALUE(TYPE, VALBUF) \
107 if (TYPE_CODE (TYPE) == TYPE_CODE_PTR) \
108 write_register_bytes(REGISTER_BYTE (4), VALBUF, TYPE_LENGTH (TYPE)); \
110 write_register_bytes(REGISTER_BYTE (0), VALBUF, TYPE_LENGTH (TYPE));
112 #define STORE_STRUCT_RETURN(STRUCT_ADDR, SP) \
113 (SP) = mn10300_store_struct_return (STRUCT_ADDR, SP)
115 extern CORE_ADDR mn10300_skip_prologue
PARAMS ((CORE_ADDR
));
116 #define SKIP_PROLOGUE(pc) (mn10300_skip_prologue (pc))
118 #define FRAME_ARGS_SKIP 0
120 #define FRAME_ARGS_ADDRESS(fi) ((fi)->frame)
121 #define FRAME_LOCALS_ADDRESS(fi) ((fi)->frame)
122 #define FRAME_NUM_ARGS(fi) (-1)
124 extern void mn10300_pop_frame
PARAMS ((struct frame_info
*));
125 #define POP_FRAME mn10300_pop_frame (get_current_frame ())
127 #define USE_GENERIC_DUMMY_FRAMES 1
128 #define CALL_DUMMY {0}
129 #define CALL_DUMMY_START_OFFSET (0)
130 #define CALL_DUMMY_BREAKPOINT_OFFSET (0)
131 #define CALL_DUMMY_LOCATION AT_ENTRY_POINT
132 #define FIX_CALL_DUMMY(DUMMY, START, FUNADDR, NARGS, ARGS, TYPE, GCCP)
133 #define CALL_DUMMY_ADDRESS() entry_point_address ()
135 extern CORE_ADDR mn10300_push_return_address
PARAMS ((CORE_ADDR
, CORE_ADDR
));
136 #define PUSH_RETURN_ADDRESS(PC, SP) mn10300_push_return_address (PC, SP)
138 #define PUSH_DUMMY_FRAME generic_push_dummy_frame ()
141 mn10300_push_arguments
PARAMS ((int, struct value
**, CORE_ADDR
,
142 unsigned char, CORE_ADDR
));
143 #define PUSH_ARGUMENTS(NARGS, ARGS, SP, STRUCT_RETURN, STRUCT_ADDR) \
144 (mn10300_push_arguments (NARGS, ARGS, SP, STRUCT_RETURN, STRUCT_ADDR))
146 #define PC_IN_CALL_DUMMY(PC, SP, FP) generic_pc_in_call_dummy (PC, SP, FP)
148 #define REG_STRUCT_HAS_ADDR(gcc_p,TYPE) \
149 (TYPE_LENGTH (TYPE) > 8)
151 extern use_struct_convention_fn mn10300_use_struct_convention
;
152 #define USE_STRUCT_CONVENTION(GCC_P, TYPE) mn10300_use_struct_convention (GCC_P, TYPE)
154 /* override the default get_saved_register function with
155 one that takes account of generic CALL_DUMMY frames */
156 #define GET_SAVED_REGISTER(raw_buffer, optimized, addrp, frame, regnum, lval) \
157 generic_get_saved_register (raw_buffer, optimized, addrp, frame, regnum, lval)
159 /* Cons up virtual frame pointer for trace */
160 extern void mn10300_virtual_frame_pointer
PARAMS ((CORE_ADDR
, long *, long *));
161 #define TARGET_VIRTUAL_FRAME_POINTER(PC, REGP, OFFP) \
162 mn10300_virtual_frame_pointer ((PC), (REGP), (OFFP))
164 /* Define this for Wingdb */
166 #define TARGET_MN10300