82a2edfbcf
cp-valprint.c, eval.c, expprint.c, findvar.c, language.c, objfiles.h, infcmd.c, printcmd.c, stack.c, typeprint.c, valarith.c, valops.c, valprint.c, value.h, values.c: Replace value with value_ptr. This is for the ptx compiler. * objfiles.h, target.h: Don't declare a "sec_ptr" field using a "sec_ptr" typedef. * symm-nat.c: Add a bunch of stuff for symmetry's ptrace stuff. #if 0 i386_float_info. * symm-tdep.c (round): Remove. Also remove sgttyb. * symm-tdep.c: Remove lots of stuff which duplicates stuff from i386-tdep.c. Remove register_addr and ptx_coff_regno_to_gdb. * i386-tdep.c (i386_frame_find_saved_regs): Put in I386_REGNO_TO_SYMMETRY check in case it is needed for Dynix someday. * config/i386/nm-symmetry.h: Change KERNEL_U_ADDR. Move stuff from PTRACE_READ_REGS, PTRACE_WRITE_REGS macros to symm-nat.c. Define CHILD_WAIT and declare child_wait(). * config/i386/tm-symmetry.h: Remove call function stuff; stuff in tm-i386v.h is apparently OK. * config/i386/xm-symmetry.h [_SEQUENT_]: Define HAVE_TERMIOS not HAVE_TERMIO. Define MEM_FNS_DECLARED, NEED_POSIX_SETPGID, and USE_O_NOCTTY.
106 lines
3.0 KiB
C
106 lines
3.0 KiB
C
/* Sequent Symmetry target interface, for GDB.
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Copyright (C) 1986, 1987, 1989, 1991, 1994 Free Software Foundation, Inc.
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This file is part of GDB.
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This program is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 2 of the License, or
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(at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program; if not, write to the Free Software
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Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. */
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/* many 387-specific items of use taken from i386-dep.c */
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#include "defs.h"
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#include "frame.h"
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#include "inferior.h"
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#include "symtab.h"
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#include <signal.h>
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#include <sys/param.h>
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#include <sys/user.h>
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#include <sys/dir.h>
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#include <sys/ioctl.h>
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#include <sys/stat.h>
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#include "gdbcore.h"
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#include <fcntl.h>
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/*
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* Following macro translates i386 opcode register numbers to Symmetry
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* register numbers. This is used by FRAME_FIND_SAVED_REGS.
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*
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* %eax %ecx %edx %ebx %esp %ebp %esi %edi
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* i386 0 1 2 3 4 5 6 7
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* Symmetry 0 2 1 5 14 15 6 7
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*
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*/
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#define I386_REGNO_TO_SYMMETRY(n) \
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((n)==0?0 :(n)==1?2 :(n)==2?1 :(n)==3?5 :(n)==4?14 :(n)==5?15 :(n))
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void
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symmetry_extract_return_value(type, regbuf, valbuf)
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struct type *type;
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char *regbuf;
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char *valbuf;
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{
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union {
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double d;
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int l[2];
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} xd;
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struct minimal_symbol *msymbol;
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float f;
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if (TYPE_CODE_FLT == TYPE_CODE(type)) {
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msymbol = lookup_minimal_symbol ("1167_flt", (struct objfile *) NULL);
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if (msymbol != NULL) {
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/* found "1167_flt" means 1167, %fp2-%fp3 */
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/* float & double; 19= %fp2, 20= %fp3 */
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/* no single precision on 1167 */
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xd.l[1] = *((int *)®buf[REGISTER_BYTE(19)]);
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xd.l[0] = *((int *)®buf[REGISTER_BYTE(20)]);
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switch (TYPE_LENGTH(type)) {
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case 4:
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/* FIXME: broken for cross-debugging. */
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f = (float) xd.d;
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memcpy (valbuf, &f, TYPE_LENGTH(type));
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break;
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case 8:
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/* FIXME: broken for cross-debugging. */
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memcpy (valbuf, &xd.d, TYPE_LENGTH(type));
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break;
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default:
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error("Unknown floating point size");
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break;
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}
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} else {
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/* 387 %st(0), gcc uses this */
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i387_to_double(((int *)®buf[REGISTER_BYTE(3)]),
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&xd.d);
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switch (TYPE_LENGTH(type)) {
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case 4: /* float */
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f = (float) xd.d;
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/* FIXME: broken for cross-debugging. */
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memcpy (valbuf, &f, 4);
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break;
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case 8: /* double */
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/* FIXME: broken for cross-debugging. */
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memcpy (valbuf, &xd.d, 8);
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break;
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default:
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error("Unknown floating point size");
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break;
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}
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}
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} else {
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memcpy (valbuf, regbuf, TYPE_LENGTH (type));
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}
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}
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