Commit | Line | Data |
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c906108c | 1 | /* Target definitions for delta68. |
a1de33a8 | 2 | Copyright 1993, 1994, 1998, 1999, 2000 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 | /* Define BPT_VECTOR if it is different than the default. | |
22 | This is the vector number used by traps to indicate a breakpoint. */ | |
23 | ||
24 | #define BPT_VECTOR 0x1 | |
25 | ||
26 | #define GCC_COMPILED_FLAG_SYMBOL "gcc_compiled%" | |
27 | #define GCC2_COMPILED_FLAG_SYMBOL "gcc2_compiled%" | |
28 | ||
29 | /* Amount PC must be decremented by after a breakpoint. | |
30 | On the Delta, the kernel decrements it for us. */ | |
31 | ||
32 | #define DECR_PC_AFTER_BREAK 0 | |
33 | ||
34 | /* Not sure what happens if we try to store this register, but | |
35 | phdm@info.ucl.ac.be says we need this define. */ | |
36 | ||
37 | #define CANNOT_STORE_REGISTER(regno) (regno == FPI_REGNUM) | |
38 | ||
39 | /* Extract from an array REGBUF containing the (raw) register state | |
40 | a function return value of type TYPE, and copy that, in virtual format, | |
41 | into VALBUF. */ | |
42 | ||
43 | /* When it returns a float/double value, use fp0 in sysV68. */ | |
44 | /* When it returns a pointer value, use a0 in sysV68. */ | |
45 | ||
46 | #define EXTRACT_RETURN_VALUE(TYPE,REGBUF,VALBUF) \ | |
47 | if (TYPE_CODE (TYPE) == TYPE_CODE_FLT) \ | |
48 | REGISTER_CONVERT_TO_VIRTUAL (FP0_REGNUM, TYPE, \ | |
49 | ®BUF[REGISTER_BYTE (FP0_REGNUM)], \ | |
50 | VALBUF); \ | |
51 | else \ | |
52 | memcpy ((VALBUF), \ | |
53 | (char *) ((REGBUF) + \ | |
54 | (TYPE_CODE(TYPE) == TYPE_CODE_PTR ? 8 * 4 : \ | |
55 | (TYPE_LENGTH(TYPE) >= 4 ? 0 : 4 - TYPE_LENGTH(TYPE)))), \ | |
56 | TYPE_LENGTH(TYPE)) | |
57 | ||
58 | /* Write into appropriate registers a function return value | |
59 | of type TYPE, given in virtual format. */ | |
60 | ||
61 | /* When it returns a float/double value, use fp0 in sysV68. */ | |
62 | /* When it returns a pointer value, use a0 in sysV68. */ | |
63 | ||
64 | #define STORE_RETURN_VALUE(TYPE,VALBUF) \ | |
65 | if (TYPE_CODE (TYPE) == TYPE_CODE_FLT) \ | |
66 | { \ | |
67 | char raw_buf[REGISTER_RAW_SIZE (FP0_REGNUM)]; \ | |
68 | REGISTER_CONVERT_TO_RAW (TYPE, FP0_REGNUM, VALBUF, raw_buf); \ | |
69 | write_register_bytes (REGISTER_BYTE (FP0_REGNUM), \ | |
70 | raw_buf, REGISTER_RAW_SIZE (FP0_REGNUM)); \ | |
71 | } \ | |
72 | else \ | |
73 | write_register_bytes ((TYPE_CODE(TYPE) == TYPE_CODE_PTR ? 8 * 4 : 0), \ | |
74 | VALBUF, TYPE_LENGTH (TYPE)) | |
75 | ||
76 | /* Return number of args passed to a frame. | |
77 | Can return -1, meaning no way to tell. */ | |
78 | ||
a14ed312 | 79 | extern int delta68_frame_num_args (struct frame_info *fi); |
cce74817 | 80 | #define FRAME_NUM_ARGS(fi) (delta68_frame_num_args ((fi))) |
c906108c SS |
81 | |
82 | /* On M68040 versions of sysV68 R3V7.1, ptrace(PT_WRITE_I) does not clear | |
83 | the processor's instruction cache as it should. */ | |
84 | #define CLEAR_INSN_CACHE() clear_insn_cache() | |
85 | ||
86 | #include "m68k/tm-m68k.h" | |
87 | ||
88 | /* Extract from an array REGBUF containing the (raw) register state | |
89 | the address in which a function should return its structure value, | |
90 | as a CORE_ADDR (or an expression that can be used as one). */ | |
91 | ||
92 | #undef EXTRACT_STRUCT_VALUE_ADDRESS | |
93 | #define EXTRACT_STRUCT_VALUE_ADDRESS(REGBUF)\ | |
94 | (*(CORE_ADDR *)((char*)(REGBUF) + 8 * 4)) | |
89c3b6d3 | 95 | |
a14ed312 | 96 | extern int delta68_in_sigtramp (CORE_ADDR pc, char *name); |
89c3b6d3 PDM |
97 | #define IN_SIGTRAMP(pc,name) delta68_in_sigtramp (pc, name) |
98 | ||
a14ed312 | 99 | extern CORE_ADDR delta68_frame_saved_pc (struct frame_info *fi); |
89c3b6d3 PDM |
100 | #undef FRAME_SAVED_PC |
101 | #define FRAME_SAVED_PC(fi) delta68_frame_saved_pc (fi) | |
102 | ||
a14ed312 | 103 | extern CORE_ADDR delta68_frame_args_address (struct frame_info *fi); |
89c3b6d3 PDM |
104 | #undef FRAME_ARGS_ADDRESS |
105 | #define FRAME_ARGS_ADDRESS(fi) delta68_frame_args_address (fi) |