Annotation of gcc/config/tm-i386v.h, revision 1.1

1.1     ! root        1: /* Definitions for Intel 386 running system V.
        !             2:    Copyright (C) 1988 Free Software Foundation, Inc.
        !             3: 
        !             4: This file is part of GNU CC.
        !             5: 
        !             6: GNU CC 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 1, or (at your option)
        !             9: any later version.
        !            10: 
        !            11: GNU CC 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 GNU CC; see the file COPYING.  If not, write to
        !            18: the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA.  */
        !            19: 
        !            20: 
        !            21: #include "tm-i386.h"
        !            22: 
        !            23: /* Use the ATT assembler syntax.  */
        !            24: 
        !            25: #include "tm-att386.h"
        !            26: 
        !            27: /* By default, target has a 80387.  */
        !            28: 
        !            29: #define TARGET_DEFAULT 1
        !            30: 
        !            31: /* Use crt1.o as a startup file and crtn.o as a closing file.  */
        !            32: 
        !            33: #define STARTFILE_SPEC  \
        !            34:   "%{pg:gcrt1.o%s}%{!pg:%{p:mcrt1.o%s}%{!p:crt1.o%s}}"
        !            35: 
        !            36: #define LIB_SPEC "%{p:-L/usr/lib/libp}%{pg:-L/usr/lib/libp} -lc crtn.o%s"
        !            37: 
        !            38: /* Specify predefined symbols in preprocessor.  */
        !            39: 
        !            40: #define CPP_PREDEFINES "-Dunix -Di386"
        !            41: 
        !            42: /* Allow #sccs in preprocessor.  */
        !            43: 
        !            44: #define SCCS_DIRECTIVE
        !            45: 
        !            46: /* Output #ident as a .ident.  */
        !            47: 
        !            48: #define ASM_OUTPUT_IDENT(FILE, NAME) fprintf (FILE, "\t.ident \"%s\"\n", NAME);
        !            49: 
        !            50: /* We want to output SDB debugging information.  */
        !            51: 
        !            52: #define SDB_DEBUGGING_INFO
        !            53: 
        !            54: /* We don't want to output DBX debugging information.  */
        !            55: 
        !            56: #undef DBX_DEBUGGING_INFO
        !            57: 
        !            58: /* Implicit library calls should use memcpy, not bcopy, etc.  */
        !            59: 
        !            60: #define TARGET_MEM_FUNCTIONS
        !            61: 
        !            62: /* Writing `int' for a bitfield forces int alignment for the structure.  */
        !            63: 
        !            64: #define PCC_BITFIELD_TYPE_MATTERS
        !            65: 
        !            66: /* Don't write a `.optim' pseudo; this assembler doesn't handle them.  */
        !            67: 
        !            68: #undef ASM_FILE_START_1
        !            69: #define ASM_FILE_START_1(FILE)
        !            70: 
        !            71: /* Machines that use the AT&T assembler syntax
        !            72:    also return floating point values in an FP register.  */
        !            73: /* Define how to find the value returned by a function.
        !            74:    VALTYPE is the data type of the value (as a tree).
        !            75:    If the precise function being called is known, FUNC is its FUNCTION_DECL;
        !            76:    otherwise, FUNC is 0.  */
        !            77: 
        !            78: #define VALUE_REGNO(MODE) \
        !            79:   (((MODE)==SFmode || (MODE)==DFmode) ? FIRST_FLOAT_REG : 0)
        !            80: 
        !            81: /* 1 if N is a possible register number for a function value. */
        !            82: 
        !            83: #define FUNCTION_VALUE_REGNO_P(N) ((N) == 0 || (N)== FIRST_FLOAT_REG)

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