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c906108c | 1 | /* Target-specific definition for the Mitsubishi D10V |
ac9a91a7 | 2 | Copyright (C) 1996,1999 Free Software Foundation, Inc. |
c906108c | 3 | |
c5aa993b | 4 | This file is part of GDB. |
c906108c | 5 | |
c5aa993b JM |
6 | This program is free software; you can redistribute it and/or modify |
7 | it under the terms of the GNU General Public License as published by | |
8 | the Free Software Foundation; either version 2 of the License, or | |
9 | (at your option) any later version. | |
c906108c | 10 | |
c5aa993b JM |
11 | This program is distributed in the hope that it will be useful, |
12 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
13 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
14 | GNU General Public License for more details. | |
c906108c | 15 | |
c5aa993b JM |
16 | You should have received a copy of the GNU General Public License |
17 | along with this program; if not, write to the Free Software | |
18 | Foundation, Inc., 59 Temple Place - Suite 330, | |
19 | Boston, MA 02111-1307, USA. */ | |
c906108c SS |
20 | |
21 | /* Contributed by Martin Hunt, hunt@cygnus.com */ | |
22 | ||
0f71a2f6 | 23 | #define GDB_MULTI_ARCH 1 |
ac9a91a7 | 24 | |
7a292a7a | 25 | /* #define GDB_TARGET_IS_D10V - moved to gdbarch.h */ |
c906108c SS |
26 | |
27 | /* Define the bit, byte, and word ordering of the machine. */ | |
28 | ||
0f71a2f6 JM |
29 | #if !GDB_MULTI_ARCH |
30 | ||
c906108c SS |
31 | #define TARGET_BYTE_ORDER BIG_ENDIAN |
32 | ||
33 | /* Offset from address of function to start of its code. | |
34 | Zero on most machines. */ | |
35 | ||
36 | #define FUNCTION_START_OFFSET 0 | |
37 | ||
c906108c SS |
38 | /* Advance PC across any function entry prologue instructions |
39 | to reach some "real" code. */ | |
40 | ||
41 | extern CORE_ADDR d10v_skip_prologue (); | |
b83266a0 | 42 | #define SKIP_PROLOGUE(ip) (d10v_skip_prologue (ip)) |
c906108c | 43 | |
c906108c | 44 | /* Stack grows downward. */ |
392a587b | 45 | #define INNER_THAN(lhs,rhs) (core_addr_lessthan ((lhs), (rhs))) |
c906108c SS |
46 | |
47 | /* for a breakpoint, use "dbt || nop" */ | |
392a587b JM |
48 | extern breakpoint_from_pc_fn d10v_breakpoint_from_pc; |
49 | #define BREAKPOINT_FROM_PC(PCPTR,LENPTR) (d10v_breakpoint_from_pc ((PCPTR), (LENPTR))) | |
c906108c SS |
50 | |
51 | /* If your kernel resets the pc after the trap happens you may need to | |
52 | define this before including this file. */ | |
53 | #define DECR_PC_AFTER_BREAK 4 | |
54 | ||
392a587b JM |
55 | extern char *d10v_register_name PARAMS ((int reg_nr)); |
56 | #define REGISTER_NAME(NR) (d10v_register_name (NR)) | |
c906108c SS |
57 | |
58 | #define NUM_REGS 37 | |
59 | ||
0f71a2f6 JM |
60 | #endif /* GDB_MULTI_ARCH */ |
61 | ||
c906108c SS |
62 | /* Register numbers of various important registers. |
63 | Note that some of these values are "real" register numbers, | |
64 | and correspond to the general registers of the machine, | |
65 | and some are "phony" register numbers which are too large | |
66 | to be actual register numbers as far as the user is concerned | |
67 | but do serve to get the desired values when passed to read_register. */ | |
68 | ||
cce74817 JM |
69 | /* Used by both d10v-tdep.c and remote-d10v.c */ |
70 | ||
c906108c SS |
71 | #define R0_REGNUM 0 |
72 | #define LR_REGNUM 13 | |
0f71a2f6 | 73 | #if !GDB_MULTI_ARCH |
c906108c SS |
74 | #define SP_REGNUM 15 |
75 | #define FP_REGNUM 11 | |
76 | #define PC_REGNUM 18 | |
0f71a2f6 | 77 | #endif |
c906108c SS |
78 | #define PSW_REGNUM 16 |
79 | #define IMAP0_REGNUM 32 | |
80 | #define IMAP1_REGNUM 33 | |
81 | #define DMAP_REGNUM 34 | |
82 | #define A0_REGNUM 35 | |
83 | ||
0f71a2f6 JM |
84 | #if !GDB_MULTI_ARCH |
85 | ||
cce74817 JM |
86 | /* ??? */ |
87 | #define REGISTER_SIZE 2 | |
88 | ||
c906108c | 89 | /* Say how much memory is needed to store a copy of the register set */ |
c5aa993b | 90 | #define REGISTER_BYTES ((37/*NUM_REGS*/-2)*2+16) |
c906108c SS |
91 | |
92 | /* Index within `registers' of the first byte of the space for | |
93 | register N. */ | |
392a587b JM |
94 | extern int d10v_register_byte PARAMS ((int reg_nr)); |
95 | #define REGISTER_BYTE(N) (d10v_register_byte (N)) | |
c906108c SS |
96 | |
97 | /* Number of bytes of storage in the actual machine representation | |
98 | for register N. */ | |
392a587b JM |
99 | extern int d10v_register_raw_size PARAMS ((int reg_nr)); |
100 | #define REGISTER_RAW_SIZE(N) (d10v_register_raw_size (N)) | |
c906108c SS |
101 | |
102 | /* Number of bytes of storage in the program's representation | |
c5aa993b | 103 | for register N. */ |
392a587b JM |
104 | extern int d10v_register_virtual_size PARAMS ((int reg_nr)); |
105 | #define REGISTER_VIRTUAL_SIZE(N) (d10v_register_virtual_size (N)) | |
c906108c SS |
106 | |
107 | /* Largest value REGISTER_RAW_SIZE can have. */ | |
108 | ||
109 | #define MAX_REGISTER_RAW_SIZE 8 | |
110 | ||
111 | /* Largest value REGISTER_VIRTUAL_SIZE can have. */ | |
112 | ||
113 | #define MAX_REGISTER_VIRTUAL_SIZE 8 | |
114 | ||
115 | /* Return the GDB type object for the "standard" data type | |
116 | of data in register N. */ | |
117 | ||
392a587b JM |
118 | extern struct type *d10v_register_virtual_type PARAMS ((int reg_nr)); |
119 | #define REGISTER_VIRTUAL_TYPE(N) (d10v_register_virtual_type (N)) | |
c906108c | 120 | |
c906108c | 121 | /* convert $pc and $sp to/from virtual addresses */ |
ac9a91a7 | 122 | extern int d10v_register_convertible PARAMS ((int nr)); |
c5aa993b JM |
123 | extern void d10v_register_convert_to_virtual PARAMS ((int regnum, struct type * type, char *from, char *to)); |
124 | extern void d10v_register_convert_to_raw PARAMS ((struct type * type, int regnum, char *from, char *to)); | |
cce74817 | 125 | #define REGISTER_CONVERTIBLE(N) (d10v_register_convertible ((N))) |
c906108c | 126 | #define REGISTER_CONVERT_TO_VIRTUAL(REGNUM,TYPE,FROM,TO) \ |
ac9a91a7 | 127 | d10v_register_convert_to_virtual ((REGNUM), (TYPE), (FROM), (TO)) |
c906108c | 128 | #define REGISTER_CONVERT_TO_RAW(TYPE,REGNUM,FROM,TO) \ |
ac9a91a7 | 129 | d10v_register_convert_to_raw ((TYPE), (REGNUM), (FROM), (TO)) |
c906108c | 130 | |
392a587b JM |
131 | extern CORE_ADDR d10v_make_daddr PARAMS ((CORE_ADDR x)); |
132 | #define D10V_MAKE_DADDR(x) (d10v_make_daddr (x)) | |
133 | extern CORE_ADDR d10v_make_iaddr PARAMS ((CORE_ADDR x)); | |
134 | #define D10V_MAKE_IADDR(x) (d10v_make_iaddr (x)) | |
c906108c | 135 | |
392a587b JM |
136 | extern int d10v_daddr_p PARAMS ((CORE_ADDR x)); |
137 | #define D10V_DADDR_P(X) (d10v_daddr_p (X)) | |
138 | extern int d10v_iaddr_p PARAMS ((CORE_ADDR x)); | |
139 | #define D10V_IADDR_P(X) (d10v_iaddr_p (X)) | |
c906108c | 140 | |
392a587b JM |
141 | extern CORE_ADDR d10v_convert_daddr_to_raw PARAMS ((CORE_ADDR x)); |
142 | #define D10V_CONVERT_DADDR_TO_RAW(X) (d10v_convert_daddr_to_raw (X)) | |
143 | extern CORE_ADDR d10v_convert_iaddr_to_raw PARAMS ((CORE_ADDR x)); | |
144 | #define D10V_CONVERT_IADDR_TO_RAW(X) (d10v_convert_iaddr_to_raw (X)) | |
c906108c | 145 | |
c906108c SS |
146 | /* Store the address of the place in which to copy the structure the |
147 | subroutine will return. This is called from call_function. | |
148 | ||
149 | We store structs through a pointer passed in the first Argument | |
150 | register. */ | |
151 | ||
392a587b JM |
152 | extern void d10v_store_struct_return PARAMS ((CORE_ADDR addr, CORE_ADDR sp)); |
153 | #define STORE_STRUCT_RETURN(ADDR, SP) d10v_store_struct_return ((ADDR), (SP)) | |
c906108c SS |
154 | |
155 | ||
156 | /* Write into appropriate registers a function return value | |
157 | of type TYPE, given in virtual format. | |
158 | ||
159 | Things always get returned in RET1_REGNUM, RET2_REGNUM, ... */ | |
160 | ||
c5aa993b | 161 | extern void d10v_store_return_value PARAMS ((struct type * type, char *valbuf)); |
392a587b | 162 | #define STORE_RETURN_VALUE(TYPE,VALBUF) d10v_store_return_value ((TYPE), (VALBUF)) |
c906108c SS |
163 | |
164 | ||
165 | /* Extract from an array REGBUF containing the (raw) register state | |
166 | the address in which a function should return its structure value, | |
167 | as a CORE_ADDR (or an expression that can be used as one). */ | |
168 | ||
392a587b JM |
169 | extern CORE_ADDR d10v_extract_struct_value_address PARAMS ((char *regbuf)); |
170 | #define EXTRACT_STRUCT_VALUE_ADDRESS(REGBUF) (d10v_extract_struct_value_address ((REGBUF))) | |
c906108c SS |
171 | |
172 | /* Should we use EXTRACT_STRUCT_VALUE_ADDRESS instead of | |
173 | EXTRACT_RETURN_VALUE? GCC_P is true if compiled with gcc | |
174 | and TYPE is the type (which is known to be struct, union or array). | |
175 | ||
176 | The d10v returns anything less than 8 bytes in size in | |
177 | registers. */ | |
178 | ||
179 | extern use_struct_convention_fn d10v_use_struct_convention; | |
180 | #define USE_STRUCT_CONVENTION(gcc_p, type) d10v_use_struct_convention (gcc_p, type) | |
c906108c | 181 | \f |
c5aa993b | 182 | |
c906108c SS |
183 | /* Define other aspects of the stack frame. |
184 | we keep a copy of the worked out return pc lying around, since it | |
185 | is a useful bit of info */ | |
186 | ||
c5aa993b | 187 | extern void d10v_init_extra_frame_info PARAMS ((int fromleaf, struct frame_info * fi)); |
c906108c | 188 | #define INIT_EXTRA_FRAME_INFO(fromleaf, fi) \ |
c5aa993b | 189 | d10v_init_extra_frame_info(fromleaf, fi) |
c906108c | 190 | |
c906108c SS |
191 | /* A macro that tells us whether the function invocation represented |
192 | by FI does not have a frame on the stack associated with it. If it | |
193 | does not, FRAMELESS is set to 1, else 0. */ | |
194 | ||
392a587b JM |
195 | #define FRAMELESS_FUNCTION_INVOCATION(FI) \ |
196 | (frameless_look_for_prologue (FI)) | |
c906108c | 197 | |
c5aa993b | 198 | extern CORE_ADDR d10v_frame_chain PARAMS ((struct frame_info * frame)); |
c906108c SS |
199 | #define FRAME_CHAIN(FRAME) d10v_frame_chain(FRAME) |
200 | extern int d10v_frame_chain_valid PARAMS ((CORE_ADDR, struct frame_info *)); | |
201 | #define FRAME_CHAIN_VALID(chain, thisframe) d10v_frame_chain_valid (chain, thisframe) | |
c5aa993b | 202 | extern CORE_ADDR d10v_frame_saved_pc PARAMS ((struct frame_info * fi)); |
392a587b | 203 | #define FRAME_SAVED_PC(fi) (d10v_frame_saved_pc ((fi))) |
c5aa993b | 204 | extern CORE_ADDR d10v_frame_args_address PARAMS ((struct frame_info * fi)); |
392a587b | 205 | #define FRAME_ARGS_ADDRESS(fi) (d10v_frame_args_address ((fi))) |
c5aa993b | 206 | extern CORE_ADDR d10v_frame_locals_address PARAMS ((struct frame_info * fi)); |
392a587b | 207 | #define FRAME_LOCALS_ADDRESS(fi) (d10v_frame_locals_address ((fi))) |
c906108c SS |
208 | |
209 | /* Immediately after a function call, return the saved pc. We can't */ | |
210 | /* use frame->return_pc beause that is determined by reading R13 off the */ | |
211 | /*stack and that may not be written yet. */ | |
212 | ||
c5aa993b | 213 | extern CORE_ADDR d10v_saved_pc_after_call PARAMS ((struct frame_info * frame)); |
392a587b | 214 | #define SAVED_PC_AFTER_CALL(frame) (d10v_saved_pc_after_call ((frame))) |
c5aa993b | 215 | |
c906108c SS |
216 | /* Set VAL to the number of args passed to frame described by FI. |
217 | Can set VAL to -1, meaning no way to tell. */ | |
218 | /* We can't tell how many args there are */ | |
219 | ||
392a587b | 220 | #define FRAME_NUM_ARGS(fi) (-1) |
c906108c SS |
221 | |
222 | /* Return number of bytes at start of arglist that are not really args. */ | |
223 | ||
224 | #define FRAME_ARGS_SKIP 0 | |
225 | ||
cce74817 JM |
226 | /* Put here the code to store, into frame_info->saved_regs, the |
227 | addresses of the saved registers of frame described by FRAME_INFO. | |
c906108c | 228 | This includes special registers such as pc and fp saved in special |
cce74817 JM |
229 | ways in the stack frame. sp is even more special: the address we |
230 | return for it IS the sp for the next frame. */ | |
c906108c | 231 | |
cce74817 JM |
232 | extern void d10v_frame_init_saved_regs PARAMS ((struct frame_info *)); |
233 | #define FRAME_INIT_SAVED_REGS(frame_info) \ | |
234 | d10v_frame_init_saved_regs(frame_info) | |
c906108c | 235 | |
c906108c SS |
236 | /* DUMMY FRAMES. Need these to support inferior function calls. They |
237 | work like this on D10V: First we set a breakpoint at 0 or __start. | |
238 | Then we push all the registers onto the stack. Then put the | |
239 | function arguments in the proper registers and set r13 to our | |
240 | breakpoint address. Finally, the PC is set to the start of the | |
241 | function being called (no JSR/BSR insn). When it hits the | |
242 | breakpoint, clear the break point and pop the old register contents | |
243 | off the stack. */ | |
244 | ||
cce74817 JM |
245 | extern void d10v_pop_frame PARAMS ((void)); |
246 | #define POP_FRAME d10v_pop_frame () | |
c906108c | 247 | |
7a292a7a | 248 | #define USE_GENERIC_DUMMY_FRAMES 1 |
c906108c SS |
249 | #define CALL_DUMMY {0} |
250 | #define CALL_DUMMY_START_OFFSET (0) | |
251 | #define CALL_DUMMY_BREAKPOINT_OFFSET (0) | |
252 | #define CALL_DUMMY_LOCATION AT_ENTRY_POINT | |
253 | #define FIX_CALL_DUMMY(DUMMY, START, FUNADDR, NARGS, ARGS, TYPE, GCCP) | |
254 | #define CALL_DUMMY_ADDRESS() entry_point_address () | |
255 | extern CORE_ADDR d10v_push_return_address PARAMS ((CORE_ADDR pc, CORE_ADDR sp)); | |
256 | #define PUSH_RETURN_ADDRESS(PC, SP) d10v_push_return_address (PC, SP) | |
257 | ||
7a292a7a | 258 | #define PC_IN_CALL_DUMMY(PC, SP, FP) generic_pc_in_call_dummy (PC, SP, FP) |
c906108c SS |
259 | /* #define PC_IN_CALL_DUMMY(pc, sp, frame_address) ( pc == IMEM_START + 4 ) */ |
260 | ||
261 | #define PUSH_DUMMY_FRAME generic_push_dummy_frame () | |
262 | ||
263 | /* override the default get_saved_register function with one that | |
264 | takes account of generic CALL_DUMMY frames */ | |
7a292a7a SS |
265 | #define GET_SAVED_REGISTER(raw_buffer, optimized, addrp, frame, regnum, lval) \ |
266 | generic_get_saved_register (raw_buffer, optimized, addrp, frame, regnum, lval) | |
c906108c SS |
267 | |
268 | #define PUSH_ARGUMENTS(nargs, args, sp, struct_return, struct_addr) \ | |
392a587b | 269 | (d10v_push_arguments((nargs), (args), (sp), (struct_return), (struct_addr))) |
c906108c SS |
270 | extern CORE_ADDR d10v_push_arguments PARAMS ((int, struct value **, CORE_ADDR, int, CORE_ADDR)); |
271 | ||
272 | ||
273 | /* Extract from an array REGBUF containing the (raw) register state | |
274 | a function return value of type TYPE, and copy that, in virtual format, | |
275 | into VALBUF. */ | |
276 | ||
277 | #define EXTRACT_RETURN_VALUE(TYPE,REGBUF,VALBUF) \ | |
278 | d10v_extract_return_value(TYPE, REGBUF, VALBUF) | |
cce74817 | 279 | extern void d10v_extract_return_value PARAMS ((struct type *, char *, char *)); |
c906108c | 280 | |
c906108c SS |
281 | |
282 | void d10v_write_pc PARAMS ((CORE_ADDR val, int pid)); | |
283 | CORE_ADDR d10v_read_pc PARAMS ((int pid)); | |
284 | void d10v_write_sp PARAMS ((CORE_ADDR val)); | |
285 | CORE_ADDR d10v_read_sp PARAMS ((void)); | |
286 | void d10v_write_fp PARAMS ((CORE_ADDR val)); | |
287 | CORE_ADDR d10v_read_fp PARAMS ((void)); | |
288 | ||
289 | #define TARGET_READ_PC(pid) d10v_read_pc (pid) | |
290 | #define TARGET_WRITE_PC(val,pid) d10v_write_pc (val, pid) | |
291 | #define TARGET_READ_FP() d10v_read_fp () | |
292 | #define TARGET_WRITE_FP(val) d10v_write_fp (val) | |
293 | #define TARGET_READ_SP() d10v_read_sp () | |
294 | #define TARGET_WRITE_SP(val) d10v_write_sp (val) | |
295 | ||
296 | /* Number of bits in the appropriate type */ | |
297 | #define TARGET_INT_BIT (2 * TARGET_CHAR_BIT) | |
298 | #define TARGET_PTR_BIT (4 * TARGET_CHAR_BIT) | |
299 | #define TARGET_DOUBLE_BIT (4 * TARGET_CHAR_BIT) | |
300 | #define TARGET_LONG_DOUBLE_BIT (8 * TARGET_CHAR_BIT) | |
c906108c | 301 | \f |
c5aa993b | 302 | |
c906108c SS |
303 | /* For the d10v when talking to the remote d10v board, GDB addresses |
304 | need to be translated into a format that the d10v rom monitor | |
305 | understands. */ | |
306 | ||
c5aa993b | 307 | extern void remote_d10v_translate_xfer_address PARAMS ((CORE_ADDR gdb_addr, int gdb_len, CORE_ADDR * rem_addr, int *rem_len)); |
c906108c | 308 | #define REMOTE_TRANSLATE_XFER_ADDRESS(GDB_ADDR, GDB_LEN, REM_ADDR, REM_LEN) \ |
392a587b | 309 | remote_d10v_translate_xfer_address ((GDB_ADDR), (GDB_LEN), (REM_ADDR), (REM_LEN)) |
c906108c | 310 | |
0f71a2f6 | 311 | #endif |