| 1 |
106 |
markom |
/* Target definitions for delta68.
|
| 2 |
|
|
Copyright 1993, 1994, 1998, 1999, 2000 Free Software Foundation, Inc.
|
| 3 |
|
|
|
| 4 |
|
|
This file is part of GDB.
|
| 5 |
|
|
|
| 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.
|
| 10 |
|
|
|
| 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.
|
| 15 |
|
|
|
| 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. */
|
| 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 |
|
|
|
| 79 |
|
|
extern int delta68_frame_num_args PARAMS ((struct frame_info * fi));
|
| 80 |
|
|
#define FRAME_NUM_ARGS(fi) (delta68_frame_num_args ((fi)))
|
| 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))
|
| 95 |
|
|
|
| 96 |
|
|
extern int delta68_in_sigtramp PARAMS ((CORE_ADDR pc, char * name));
|
| 97 |
|
|
#define IN_SIGTRAMP(pc,name) delta68_in_sigtramp (pc, name)
|
| 98 |
|
|
|
| 99 |
|
|
extern CORE_ADDR delta68_frame_saved_pc PARAMS ((struct frame_info * fi));
|
| 100 |
|
|
#undef FRAME_SAVED_PC
|
| 101 |
|
|
#define FRAME_SAVED_PC(fi) delta68_frame_saved_pc (fi)
|
| 102 |
|
|
|
| 103 |
|
|
extern CORE_ADDR delta68_frame_args_address PARAMS ((struct frame_info * fi));
|
| 104 |
|
|
#undef FRAME_ARGS_ADDRESS
|
| 105 |
|
|
#define FRAME_ARGS_ADDRESS(fi) delta68_frame_args_address (fi)
|
