mirror of
https://github.com/darlinghq/darling-gdb.git
synced 2024-12-04 10:24:13 +00:00
fbcb509562
READ_MIPS_FORMAT, which have been unused since BFD. Still remaining is COFF_NO_LONG_FILE_NAMES. * tm-sun3.h, tm-altos.h: Remove detritus accidentally left from function calling code moved to m68k-tdep.c.
91 lines
3.4 KiB
C
91 lines
3.4 KiB
C
/* Parameters for execution on a Sony/NEWS, for GDB, the GNU debugger.
|
|
Copyright (C) 1987, 1989, 1991 Free Software Foundation, Inc.
|
|
|
|
This file is part of GDB.
|
|
|
|
This program is free software; you can redistribute it and/or modify
|
|
it under the terms of the GNU General Public License as published by
|
|
the Free Software Foundation; either version 2 of the License, or
|
|
(at your option) any later version.
|
|
|
|
This program is distributed in the hope that it will be useful,
|
|
but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
|
GNU General Public License for more details.
|
|
|
|
You should have received a copy of the GNU General Public License
|
|
along with this program; if not, write to the Free Software
|
|
Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. */
|
|
|
|
/* See following cpu type determination macro to get the machine type.
|
|
|
|
Here is an m-news.h file for gdb. It supports the 68881 registers.
|
|
by hikichi@srava.sra.junet
|
|
|
|
* Support Sun assembly format instead of Motorola one.
|
|
* Ptrace for handling floating register has a bug(before NEWS OS version 2.2),
|
|
* After NEWS OS version 3.2, some of ptrace's bug is fixed.
|
|
But we cannot change the floating register(see adb(1) in OS 3.2) yet. */
|
|
|
|
#define HAVE_68881
|
|
|
|
/* Define this if the C compiler puts an underscore at the front
|
|
of external names before giving them to the linker. */
|
|
|
|
#define NAMES_HAVE_UNDERSCORE
|
|
|
|
/* Use to compute STACK_END_ADDR. */
|
|
#define TARGET_UPAGES 2
|
|
#define TARGET_NBPG 4096
|
|
|
|
/* Address of end of stack space. */
|
|
|
|
#define STACK_END_ADDR (0x80000000 - TARGET_UPAGES * TARGET_NBPG)
|
|
|
|
/* Extract from an array REGBUF containing the (raw) register state
|
|
a function return value of type TYPE, and copy that, in virtual format,
|
|
into VALBUF. */
|
|
|
|
/* when it return the floating value, use the FP0 in NEWS. */
|
|
#define EXTRACT_RETURN_VALUE(TYPE,REGBUF,VALBUF) \
|
|
{ if (TYPE_CODE (TYPE) == TYPE_CODE_FLT) \
|
|
{ \
|
|
REGISTER_CONVERT_TO_VIRTUAL (FP0_REGNUM, \
|
|
®BUF[REGISTER_BYTE (FP0_REGNUM)], VALBUF); \
|
|
} \
|
|
else \
|
|
bcopy (REGBUF, VALBUF, TYPE_LENGTH (TYPE)); }
|
|
|
|
/* Write into appropriate registers a function return value
|
|
of type TYPE, given in virtual format. */
|
|
|
|
/* when it return the floating value, use the FP0 in NEWS. */
|
|
#define STORE_RETURN_VALUE(TYPE,VALBUF) \
|
|
{ if (TYPE_CODE (TYPE) == TYPE_CODE_FLT) \
|
|
{ \
|
|
char raw_buf[REGISTER_RAW_SIZE (FP0_REGNUM)]; \
|
|
REGISTER_CONVERT_TO_RAW (FP0_REGNUM, VALBUF, raw_buf); \
|
|
write_register_bytes (FP0_REGNUM, \
|
|
raw_buf, REGISTER_RAW_SIZE (FP0_REGNUM)); \
|
|
} \
|
|
else \
|
|
write_register_bytes (0, VALBUF, TYPE_LENGTH (TYPE)); }
|
|
|
|
/* Return number of args passed to a frame.
|
|
Can return -1, meaning no way to tell. */
|
|
|
|
#define FRAME_NUM_ARGS(val, fi) \
|
|
{ register CORE_ADDR pc = FRAME_SAVED_PC (fi); \
|
|
register int insn = 0177777 & read_memory_integer (pc, 2); \
|
|
val = 0; \
|
|
if (insn == 0047757 || insn == 0157374) /* lea W(sp),sp or addaw #W,sp */ \
|
|
val = read_memory_integer (pc + 2, 2); \
|
|
else if ((insn & 0170777) == 0050217 /* addql #N, sp */ \
|
|
|| (insn & 0170777) == 0050117) /* addqw */ \
|
|
{ val = (insn >> 9) & 7; if (val == 0) val = 8; } \
|
|
else if (insn == 0157774) /* addal #WW, sp */ \
|
|
val = read_memory_integer (pc + 2, 4); \
|
|
val >>= 2; }
|
|
|
|
#include "tm-68k.h"
|