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Annotation of gcc/config/i386/sol2.h, revision 1.1

1.1     ! root        1: /* Target definitions for GNU compiler for Intel 80386 running Solaris 2
        !             2:    Copyright (C) 1993 Free Software Foundation, Inc.
        !             3: 
        !             4:    Written by Fred Fish ([email protected]).
        !             5: 
        !             6: This file is part of GNU CC.
        !             7: 
        !             8: GNU CC is free software; you can redistribute it and/or modify
        !             9: it under the terms of the GNU General Public License as published by
        !            10: the Free Software Foundation; either version 2, or (at your option)
        !            11: any later version.
        !            12: 
        !            13: GNU CC is distributed in the hope that it will be useful,
        !            14: but WITHOUT ANY WARRANTY; without even the implied warranty of
        !            15: MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
        !            16: GNU General Public License for more details.
        !            17: 
        !            18: You should have received a copy of the GNU General Public License
        !            19: along with GNU CC; see the file COPYING.  If not, write to
        !            20: the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA.  */
        !            21: 
        !            22: #include "i386/sysv4.h"
        !            23: 
        !            24: /* The Solaris 2.0 x86 linker botches alignment of code sections.
        !            25:    It tries to align to a 16 byte boundary by padding with 0x00000090
        !            26:    ints, rather than 0x90 bytes (nop).  This generates trash in the
        !            27:    ".init" section since the contribution from crtbegin.o is only 7
        !            28:    bytes.  The linker pads it to 16 bytes with a single 0x90 byte, and
        !            29:    two 0x00000090 ints, which generates a segmentation violation when
        !            30:    executed.  This macro forces the assembler to do the padding, since
        !            31:    it knows what it is doing. */
        !            32: 
        !            33: #define FORCE_INIT_SECTION_ALIGN do { asm (ALIGN_ASM_OP ## " 16"); } while (0)

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