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c906108c | 1 | /* Parameters for execution on a H8/500 series machine. |
b6ba6518 KB |
2 | Copyright 1993, 1994, 1995, 1998, 1999, 2000, 2001 |
3 | Free Software Foundation, Inc. | |
c906108c | 4 | |
c5aa993b | 5 | This file is part of GDB. |
c906108c | 6 | |
c5aa993b JM |
7 | This program is free software; you can redistribute it and/or modify |
8 | it under the terms of the GNU General Public License as published by | |
9 | the Free Software Foundation; either version 2 of the License, or | |
10 | (at your option) any later version. | |
c906108c | 11 | |
c5aa993b JM |
12 | This program is distributed in the hope that it will be useful, |
13 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
14 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
15 | GNU General Public License for more details. | |
c906108c | 16 | |
c5aa993b JM |
17 | You should have received a copy of the GNU General Public License |
18 | along with this program; if not, write to the Free Software | |
19 | Foundation, Inc., 59 Temple Place - Suite 330, | |
20 | Boston, MA 02111-1307, USA. */ | |
c906108c | 21 | |
f88e2c52 AC |
22 | #include "regcache.h" |
23 | ||
c906108c SS |
24 | /* Contributed by Steve Chamberlain sac@cygnus.com */ |
25 | ||
26 | #define GDB_TARGET_IS_H8500 | |
27 | ||
c906108c SS |
28 | /* Define the sizes of integers and pointers. */ |
29 | ||
30 | #define TARGET_INT_BIT 16 | |
31 | ||
32 | #define TARGET_LONG_BIT 32 | |
33 | ||
34 | #define TARGET_PTR_BIT (minimum_mode ? 16 : 32) | |
35 | ||
36 | /* Offset from address of function to start of its code. | |
37 | Zero on most machines. */ | |
38 | ||
39 | #define FUNCTION_START_OFFSET 0 | |
40 | ||
41 | /* Advance PC across any function entry prologue instructions | |
42 | to reach some "real" code. */ | |
43 | ||
b83266a0 | 44 | #define SKIP_PROLOGUE(ip) (h8500_skip_prologue (ip)) |
a14ed312 | 45 | extern CORE_ADDR h8500_skip_prologue (CORE_ADDR); |
c906108c SS |
46 | |
47 | /* Immediately after a function call, return the saved pc. | |
48 | Can't always go through the frames for this because on some machines | |
49 | the new frame is not set up until the new function executes | |
50 | some instructions. */ | |
51 | ||
52 | #define SAVED_PC_AFTER_CALL(frame) saved_pc_after_call() | |
a14ed312 | 53 | extern CORE_ADDR saved_pc_after_call (void); |
c906108c SS |
54 | |
55 | /* Stack grows downward. */ | |
56 | ||
57 | #define INNER_THAN(lhs,rhs) ((lhs) < (rhs)) | |
58 | ||
59 | /* Illegal instruction - used by the simulator for breakpoint | |
60 | detection */ | |
61 | ||
62 | #define BREAKPOINT {0x0b} | |
63 | ||
64 | /* If your kernel resets the pc after the trap happens you may need to | |
65 | define this before including this file. */ | |
66 | ||
67 | #define DECR_PC_AFTER_BREAK 0 | |
68 | ||
69 | /* Say how long registers are. */ | |
70 | ||
71 | #define REGISTER_TYPE unsigned long | |
72 | ||
73 | /* Say how much memory is needed to store a copy of the register set */ | |
74 | ||
c5aa993b | 75 | #define REGISTER_BYTES (NUM_REGS * 4) |
c906108c SS |
76 | |
77 | /* Index within `registers' of the first byte of the space for | |
78 | register N. */ | |
79 | ||
80 | #define REGISTER_BYTE(N) ((N)*4) | |
81 | ||
82 | /* Number of bytes of storage in the actual machine representation | |
83 | for register N. */ | |
84 | ||
85 | #define REGISTER_RAW_SIZE(N) h8500_register_size(N) | |
a14ed312 | 86 | extern int h8500_register_size (int regno); |
c906108c SS |
87 | |
88 | #define REGISTER_SIZE 4 | |
89 | ||
90 | #define REGISTER_VIRTUAL_SIZE(N) h8500_register_size(N) | |
91 | ||
92 | /* Largest value REGISTER_RAW_SIZE can have. */ | |
93 | ||
94 | #define MAX_REGISTER_RAW_SIZE 4 | |
95 | ||
96 | /* Largest value REGISTER_VIRTUAL_SIZE can have. */ | |
97 | ||
98 | #define MAX_REGISTER_VIRTUAL_SIZE 4 | |
99 | ||
100 | /* Return the GDB type object for the "standard" data type | |
101 | of data in register N. */ | |
102 | ||
103 | #define REGISTER_VIRTUAL_TYPE(N) h8500_register_virtual_type(N) | |
a14ed312 | 104 | extern struct type *h8500_register_virtual_type (int regno); |
c906108c SS |
105 | |
106 | /* Initializer for an array of names of registers. | |
107 | Entries beyond the first NUM_REGS are ignored. */ | |
108 | ||
109 | #define REGISTER_NAMES \ | |
110 | { "r0", "r1", "r2", "r3", "r4", "r5", "r6", "r7", \ | |
111 | "pr0","pr1","pr2","pr3","pr4","pr5","pr6","pr7", \ | |
112 | "cp", "dp", "ep", "tp", "sr", "pc"} | |
113 | ||
114 | /* Register numbers of various important registers. Note that some of | |
115 | these values are "real" register numbers, and correspond to the | |
116 | general registers of the machine, and some are "phony" register | |
117 | numbers which are too large to be actual register numbers as far as | |
118 | the user is concerned but do serve to get the desired values when | |
119 | passed to read_register. */ | |
120 | ||
121 | #define R0_REGNUM 0 | |
122 | #define R1_REGNUM 1 | |
123 | #define R2_REGNUM 2 | |
124 | #define R3_REGNUM 3 | |
125 | #define R4_REGNUM 4 | |
126 | #define R5_REGNUM 5 | |
127 | #define R6_REGNUM 6 | |
128 | #define R7_REGNUM 7 | |
129 | ||
130 | #define PR0_REGNUM 8 | |
131 | #define PR1_REGNUM 9 | |
132 | #define PR2_REGNUM 10 | |
133 | #define PR3_REGNUM 11 | |
134 | #define PR4_REGNUM 12 | |
135 | #define PR5_REGNUM 13 | |
136 | #define PR6_REGNUM 14 | |
137 | #define PR7_REGNUM 15 | |
138 | ||
139 | #define SEG_C_REGNUM 16 /* Segment registers */ | |
140 | #define SEG_D_REGNUM 17 | |
141 | #define SEG_E_REGNUM 18 | |
142 | #define SEG_T_REGNUM 19 | |
143 | ||
144 | #define CCR_REGNUM 20 /* Contains processor status */ | |
145 | #define PC_REGNUM 21 /* Contains program counter */ | |
146 | ||
147 | #define NUM_REGS 22 | |
148 | ||
c5aa993b JM |
149 | #define SP_REGNUM PR7_REGNUM /* Contains address of top of stack */ |
150 | #define FP_REGNUM PR6_REGNUM /* Contains address of executing stack frame */ | |
c906108c SS |
151 | |
152 | #define PTR_SIZE (minimum_mode ? 2 : 4) | |
153 | #define PTR_MASK (minimum_mode ? 0x0000ffff : 0x00ffffff) | |
154 | ||
155 | /* Store the address of the place in which to copy the structure the | |
156 | subroutine will return. This is called from call_function. */ | |
157 | ||
158 | /*#define STORE_STRUCT_RETURN(ADDR, SP) \ | |
e1e9e218 | 159 | { write_register (0, (ADDR)); internal_error (__FILE__, __LINE__, "failed internal consistency check"); } */ |
c906108c SS |
160 | |
161 | /* Extract from an array REGBUF containing the (raw) register state | |
162 | a function return value of type TYPE, and copy that, in virtual format, | |
163 | into VALBUF. */ | |
164 | ||
26e9b323 | 165 | #define DEPRECATED_EXTRACT_RETURN_VALUE(TYPE,REGBUF,VALBUF) \ |
c906108c SS |
166 | memcpy (VALBUF, (char *)(REGBUF), TYPE_LENGTH(TYPE)) |
167 | ||
168 | /* Write into appropriate registers a function return value | |
169 | of type TYPE, given in virtual format. */ | |
170 | ||
171 | #define STORE_RETURN_VALUE(TYPE,VALBUF) \ | |
172 | write_register_bytes (0, VALBUF, TYPE_LENGTH (TYPE)) | |
173 | ||
174 | /* Extract from an array REGBUF containing the (raw) register state | |
175 | the address in which a function should return its structure value, | |
176 | as a CORE_ADDR (or an expression that can be used as one). */ | |
177 | ||
26e9b323 | 178 | #define DEPRECATED_EXTRACT_STRUCT_VALUE_ADDRESS(REGBUF) (*(CORE_ADDR *)(REGBUF)) |
c906108c | 179 | \f |
c5aa993b | 180 | |
c906108c SS |
181 | /* Define other aspects of the stack frame. */ |
182 | ||
183 | /* A macro that tells us whether the function invocation represented | |
184 | by FI does not have a frame on the stack associated with it. If it | |
185 | does not, FRAMELESS is set to 1, else 0. */ | |
186 | ||
392a587b JM |
187 | #define FRAMELESS_FUNCTION_INVOCATION(FI) \ |
188 | (frameless_look_for_prologue (FI)) | |
c906108c SS |
189 | |
190 | /* Any function with a frame looks like this | |
191 | SECOND ARG | |
192 | FIRST ARG | |
193 | RET PC | |
194 | SAVED R2 | |
195 | SAVED R3 | |
196 | SAVED FP <-FP POINTS HERE | |
197 | LOCALS0 | |
198 | LOCALS1 <-SP POINTS HERE | |
c5aa993b JM |
199 | |
200 | */ | |
c906108c SS |
201 | |
202 | #define INIT_EXTRA_FRAME_INFO(fromleaf, fci) ; | |
c5aa993b | 203 | /* (fci)->frame |= read_register(SEG_T_REGNUM) << 16; */ |
c906108c SS |
204 | |
205 | #define FRAME_CHAIN(FRAME) h8500_frame_chain(FRAME) | |
206 | struct frame_info; | |
a14ed312 | 207 | extern CORE_ADDR h8500_frame_chain (struct frame_info *); |
c906108c SS |
208 | |
209 | #define FRAME_SAVED_PC(FRAME) frame_saved_pc(FRAME) | |
a14ed312 | 210 | extern CORE_ADDR frame_saved_pc (struct frame_info *frame); |
c906108c SS |
211 | |
212 | #define FRAME_ARGS_ADDRESS(fi) ((fi)->frame) | |
213 | ||
214 | #define FRAME_LOCALS_ADDRESS(fi) ((fi)->frame) | |
215 | ||
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 | ||
219 | /* We can't tell how many args there are | |
220 | now that the C compiler delays popping them. */ | |
221 | ||
392a587b | 222 | #define FRAME_NUM_ARGS(fi) (-1) |
c906108c SS |
223 | |
224 | /* Return number of bytes at start of arglist that are not really args. */ | |
225 | ||
226 | #define FRAME_ARGS_SKIP 0 | |
227 | ||
228 | /* Put here the code to store, into a struct frame_saved_regs, | |
229 | the addresses of the saved registers of frame described by FRAME_INFO. | |
230 | This includes special registers such as pc and fp saved in special | |
231 | ways in the stack frame. sp is even more special: | |
232 | the address we return for it IS the sp for the next frame. */ | |
233 | ||
234 | #define FRAME_FIND_SAVED_REGS(frame_info, frame_saved_regs) \ | |
235 | frame_find_saved_regs(frame_info, &(frame_saved_regs)) | |
236 | struct frame_saved_regs; | |
a14ed312 KB |
237 | extern void frame_find_saved_regs (struct frame_info *frame_info, |
238 | struct frame_saved_regs *frame_saved_regs); | |
c906108c SS |
239 | \f |
240 | ||
241 | /* Discard from the stack the innermost frame, restoring all registers. */ | |
242 | ||
243 | #define POP_FRAME { h8500_pop_frame (); } | |
a14ed312 | 244 | extern void h8500_pop_frame (void); |
c906108c SS |
245 | |
246 | #define SHORT_INT_MAX 32767 | |
247 | #define SHORT_INT_MIN -32768 | |
248 | ||
c906108c SS |
249 | typedef unsigned short INSN_WORD; |
250 | ||
a14ed312 | 251 | extern CORE_ADDR h8500_addr_bits_remove (CORE_ADDR); |
c906108c SS |
252 | #define ADDR_BITS_REMOVE(addr) h8500_addr_bits_remove (addr) |
253 | ||
254 | #define read_memory_short(x) (read_memory_integer(x,2) & 0xffff) | |
255 | ||
256 | #define PRINT_REGISTER_HOOK(regno) print_register_hook(regno) | |
a14ed312 | 257 | extern void print_register_hook (int); |
c906108c SS |
258 | |
259 | extern int minimum_mode; | |
260 | ||
261 | #define CALL_DUMMY_LENGTH 10 | |
262 | ||
263 | /* Fake variables to make it easy to use 24 bit register pointers */ | |
264 | ||
265 | #define IS_TRAPPED_INTERNALVAR h8500_is_trapped_internalvar | |
a14ed312 | 266 | extern int h8500_is_trapped_internalvar (char *name); |
c906108c SS |
267 | |
268 | #define VALUE_OF_TRAPPED_INTERNALVAR h8500_value_of_trapped_internalvar | |
c5aa993b | 269 | extern struct value *h8500_value_of_trapped_internalvar ( /* struct internalvar *var */ ); |
c906108c SS |
270 | |
271 | #define SET_TRAPPED_INTERNALVAR h8500_set_trapped_internalvar | |
c5aa993b | 272 | extern void h8500_set_trapped_internalvar ( /* struct internalvar *var, value newval, int bitpos, int bitsize, int offset */ ); |
c906108c | 273 | |
a14ed312 KB |
274 | extern CORE_ADDR h8500_read_sp (void); |
275 | extern void h8500_write_sp (CORE_ADDR); | |
c906108c | 276 | |
a14ed312 | 277 | extern CORE_ADDR h8500_read_fp (void); |
c906108c | 278 | |
39f77062 KB |
279 | extern CORE_ADDR h8500_read_pc (ptid_t); |
280 | extern void h8500_write_pc (CORE_ADDR, ptid_t); | |
c906108c SS |
281 | |
282 | #define TARGET_READ_SP() h8500_read_sp() | |
283 | #define TARGET_WRITE_SP(x) h8500_write_sp(x) | |
284 | ||
285 | #define TARGET_READ_PC(pid) h8500_read_pc(pid) | |
286 | #define TARGET_WRITE_PC(x,pid) h8500_write_pc(x,pid) | |
287 | ||
288 | #define TARGET_READ_FP() h8500_read_fp() |