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