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c906108c SS |
1 | /* Parameters for execution on a Matsushita mn10300 processor. |
2 | Copyright 1996, 1997 Free Software Foundation, Inc. | |
3 | ||
4 | Contributed by Geoffrey Noer <noer@cygnus.com> | |
5 | ||
6 | This file is part of GDB. | |
7 | ||
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. | |
12 | ||
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. | |
17 | ||
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. */ | |
21 | ||
22 | /* The mn10300 is little endian. */ | |
23 | #define TARGET_BYTE_ORDER_DEFAULT LITTLE_ENDIAN | |
24 | ||
25 | /* All registers are 32bits (phew!). */ | |
26 | #define REGISTER_SIZE 4 | |
27 | #define MAX_REGISTER_RAW_SIZE 4 | |
28 | #define NUM_REGS 32 | |
29 | ||
30 | #define REGISTER_VIRTUAL_TYPE(REG) builtin_type_int | |
31 | ||
32 | #define REGISTER_BYTE(REG) ((REG) * 4) | |
33 | #define REGISTER_VIRTUAL_SIZE(REG) 4 | |
34 | #define REGISTER_RAW_SIZE(REG) 4 | |
35 | ||
36 | #define MAX_REGISTER_VIRTUAL_SIZE 4 | |
37 | ||
38 | #define REGISTER_BYTES (NUM_REGS * REGISTER_SIZE) | |
39 | ||
40 | extern char **mn10300_register_names; | |
41 | #define REGISTER_NAME(i) mn10300_register_names[i] | |
42 | ||
43 | #define D2_REGNUM 2 | |
44 | #define D3_REGNUM 3 | |
45 | #define A2_REGNUM 6 | |
46 | #define A3_REGNUM 7 | |
47 | #define SP_REGNUM 8 | |
48 | #define PC_REGNUM 9 | |
49 | #define MDR_REGNUM 10 | |
50 | #define PSW_REGNUM 11 | |
51 | #define LIR_REGNUM 12 | |
52 | #define LAR_REGNUM 13 | |
53 | ||
54 | /* Pseudo register that contains true address of executing stack frame */ | |
55 | #define FP_REGNUM 31 | |
56 | ||
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) | |
61 | ||
62 | #define FUNCTION_START_OFFSET 0 | |
63 | ||
64 | #define DECR_PC_AFTER_BREAK 0 | |
65 | ||
66 | #define INNER_THAN(lhs,rhs) ((lhs) < (rhs)) | |
67 | ||
68 | #define SAVED_PC_AFTER_CALL(frame) \ | |
69 | read_memory_integer (read_register (SP_REGNUM), 4) | |
70 | ||
71 | #ifdef __STDC__ | |
72 | struct frame_info; | |
73 | struct type; | |
74 | struct value; | |
75 | #endif | |
76 | ||
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 */ | |
80 | ||
81 | #define FRAME_INIT_SAVED_REGS(fi) /* handled by init_extra_frame_info */ | |
82 | ||
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) | |
86 | ||
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)) | |
90 | ||
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, | |
93 | into VALBUF. */ | |
94 | ||
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)); \ | |
98 | else \ | |
99 | memcpy (VALBUF, REGBUF + REGISTER_BYTE (0), TYPE_LENGTH (TYPE)); | |
100 | ||
101 | ||
102 | #define EXTRACT_STRUCT_VALUE_ADDRESS(REGBUF) \ | |
103 | extract_address (REGBUF + REGISTER_BYTE (4), \ | |
104 | REGISTER_RAW_SIZE (4)) | |
105 | ||
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)); \ | |
109 | else \ | |
110 | write_register_bytes(REGISTER_BYTE (0), VALBUF, TYPE_LENGTH (TYPE)); | |
111 | ||
112 | #define STORE_STRUCT_RETURN(STRUCT_ADDR, SP) \ | |
113 | (SP) = mn10300_store_struct_return (STRUCT_ADDR, SP) | |
114 | ||
115 | extern CORE_ADDR mn10300_skip_prologue PARAMS ((CORE_ADDR)); | |
116 | #define SKIP_PROLOGUE(pc) pc = mn10300_skip_prologue (pc) | |
117 | ||
118 | #define FRAME_ARGS_SKIP 0 | |
119 | ||
120 | #define FRAME_ARGS_ADDRESS(fi) ((fi)->frame) | |
121 | #define FRAME_LOCALS_ADDRESS(fi) ((fi)->frame) | |
122 | #define FRAME_NUM_ARGS(val, fi) ((val) = -1) | |
123 | ||
124 | extern void mn10300_pop_frame PARAMS ((struct frame_info *)); | |
125 | #define POP_FRAME mn10300_pop_frame (get_current_frame ()) | |
126 | ||
7a292a7a | 127 | #define USE_GENERIC_DUMMY_FRAMES 1 |
c906108c SS |
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 () | |
134 | ||
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) | |
137 | ||
138 | #define PUSH_DUMMY_FRAME generic_push_dummy_frame () | |
139 | ||
140 | extern CORE_ADDR | |
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 | (SP) = mn10300_push_arguments (NARGS, ARGS, SP, STRUCT_RETURN, STRUCT_ADDR) | |
145 | ||
7a292a7a | 146 | #define PC_IN_CALL_DUMMY(PC, SP, FP) generic_pc_in_call_dummy (PC, SP, FP) |
c906108c SS |
147 | |
148 | #define REG_STRUCT_HAS_ADDR(gcc_p,TYPE) \ | |
149 | (TYPE_LENGTH (TYPE) > 8) | |
150 | ||
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) | |
153 | ||
154 | /* override the default get_saved_register function with | |
155 | one that takes account of generic CALL_DUMMY frames */ | |
7a292a7a SS |
156 | #define GET_SAVED_REGISTER(raw_buffer, optimized, addrp, frame, regnum, lval) \ |
157 | generic_get_saved_register (raw_buffer, optimized, addrp, frame, regnum, lval) | |
c906108c SS |
158 | |
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)) | |
163 | ||
164 | /* Define this for Wingdb */ | |
165 | ||
166 | #define TARGET_MN10300 |