77 lines
2.6 KiB
C
77 lines
2.6 KiB
C
/* Target-dependent definitions for Intel x86 running DJGPP.
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Copyright 1995, 1996, 1997 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., 59 Temple Place - Suite 330,
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Boston, MA 02111-1307, USA. */
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#undef HAVE_SSE_REGS /* FIXME! go32-nat.c needs to support XMMi registers */
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#define HAVE_I387_REGS
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#include "i386/tm-i386.h"
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/* The host and target are i386 machines and the compiler supports
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long doubles. Long doubles on the host therefore have the same
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layout as a 387 FPU stack register. */
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#if defined(HAVE_LONG_DOUBLE) && defined(HOST_I386)
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#undef LD_I387
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#define LD_I387
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#endif
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/* Allow floating point numbers to be specified by a raw long double
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10 hex bytes number, e.g. 1.0 can be input as
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0x3fff8000000000000000 */
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#ifdef LD_I387
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#define HEX_LONG_DOUBLE_INPUT(base,p,len,target) \
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((base) == 16 && (len) == 20 \
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&& i387_hex_long_double_input ((p), (target)))
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#endif
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extern int i387_hex_long_double_input (char *p, long double *putithere);
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#ifdef LD_I387 /* otherwise, definitions from tm-i386.h are good enough */
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#undef REGISTER_CONVERT_TO_VIRTUAL
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#define REGISTER_CONVERT_TO_VIRTUAL(REGNUM,TYPE,FROM,TO) \
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{ \
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long double val = *((long double *)(FROM)); \
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store_floating ((TO), TYPE_LENGTH (TYPE), val); \
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}
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#undef REGISTER_CONVERT_TO_RAW
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#define REGISTER_CONVERT_TO_RAW(TYPE,REGNUM,FROM,TO) \
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{ \
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long double val = extract_floating ((FROM), TYPE_LENGTH (TYPE)); \
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*((long double *)(TO)) = val; \
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}
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/* Return the GDB type object for the "standard" data type of data in
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register N. Perhaps si and di should go here, but potentially they
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could be used for things other than address. */
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#define REGISTER_VIRTUAL_TYPE(N) \
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(((N) == PC_REGNUM || (N) == FP_REGNUM || (N) == SP_REGNUM) \
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? lookup_pointer_type (builtin_type_void) \
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: IS_FP_REGNUM(N) ? builtin_type_long_double \
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: IS_SSE_REGNUM(N) ? builtin_type_v4sf \
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: builtin_type_int)
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#endif /* LD_I387 */
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#undef TARGET_LONG_DOUBLE_BIT
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#define TARGET_LONG_DOUBLE_BIT 96
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