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| author | Fred Fish <fnf@specifix.com> | 1993-03-23 01:19:58 +0000 |
|---|---|---|
| committer | Fred Fish <fnf@specifix.com> | 1993-03-23 01:19:58 +0000 |
| commit | 5076de826cefc4cd828a8cf4cd6940d9a82f9e70 (patch) | |
| tree | d6a1288826d5e971b6f88cfa048f8f51b8ec3543 /gdb/config/m68k/tm-news.h | |
| parent | 8256379df2a7043fdf6327a0190ab667cfbb84bf (diff) | |
| download | gdb-5076de826cefc4cd828a8cf4cd6940d9a82f9e70.zip gdb-5076de826cefc4cd828a8cf4cd6940d9a82f9e70.tar.gz gdb-5076de826cefc4cd828a8cf4cd6940d9a82f9e70.tar.bz2 | |
* config/{*.mt, *.mh}: All target and host makefile fragment
config files moved to an appropriate config/<cpu> subdirectory.
* nm-*, xm-*, tm-*: All native, host, and target files, which
get linked to nm.h, xm.h, and tm.h respectively by configure,
moved to appropriate config/<cpu> subdirectory.
Diffstat (limited to 'gdb/config/m68k/tm-news.h')
| -rw-r--r-- | gdb/config/m68k/tm-news.h | 85 |
1 files changed, 85 insertions, 0 deletions
diff --git a/gdb/config/m68k/tm-news.h b/gdb/config/m68k/tm-news.h new file mode 100644 index 0000000..7f784f8 --- /dev/null +++ b/gdb/config/m68k/tm-news.h @@ -0,0 +1,85 @@ +/* Parameters for execution on a Sony/NEWS, for GDB, the GNU debugger. + Copyright 1987, 1989, 1991, 1993 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 + +/* 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 "m68k/tm-68k.h" |