213 lines
6.5 KiB
C
213 lines
6.5 KiB
C
/* Operating system specific defines to be used when targeting GCC for
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hosting on Windows NT 3.x, using a unix style C library and tools.
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This is different to the winnt.h file, since that is used
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to build GCC for use with a windows style library and tool
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set, winnt.h uses the Microsoft tools to do that.
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Copyright (C) 1995 Free Software Foundation, Inc.
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This file is part of GNU CC.
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GNU CC 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, or (at your option)
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any later version.
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GNU CC 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 GNU CC; see the file COPYING. If not, write to
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the Free Software Foundation, 59 Temple Place - Suite 330,
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Boston, MA 02111-1307, USA. */
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#define YES_UNDERSCORES
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#include "i386/gas.h"
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#ifdef CPP_PREDEFINES
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#undef CPP_PREDEFINES
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#endif
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#define CPP_PREDEFINES "-Di386 -D__WIN32__ \
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-DPOSIX -D__CYGWIN32__ -DWINNT -D_X86_=1 -D__STDC__=1\
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-D__stdcall=__attribute__((__stdcall__)) \
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-D__cdecl=__attribute__((__cdecl__)) \
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-Asystem(winnt) -Acpu(i386) -Amachine(i386)"
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/* We have to dynamic link to get to the system dlls,
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and I've put all of libc and libm and the unix stuff into
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cygwin.dll, the import library is called 'libcygwin.a' */
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#undef LIB_SPEC
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#define LIB_SPEC "-lcygwin"
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/* No need for libgcc, it's in the shared library. */
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#undef LIBGCC_SPEC
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#define LIBGCC_SPEC ""
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#undef STARTFILE_SPEC
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#define STARTFILE_SPEC "%{!:crt0%O%s}"
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#define SIZE_TYPE "unsigned int"
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#define PTRDIFF_TYPE "int"
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#define WCHAR_UNSIGNED 1
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#define WCHAR_TYPE_SIZE 16
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#define WCHAR_TYPE "short unsigned int"
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#undef LONG_DOUBLE_TYPE_SIZE
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#define LONG_DOUBLE_TYPE_SIZE 64
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#define HAVE_ATEXIT 1
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#undef EXTRA_SECTIONS
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#define EXTRA_SECTIONS in_ctor, in_dtor
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#undef EXTRA_SECTION_FUNCTIONS
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#define EXTRA_SECTION_FUNCTIONS \
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CTOR_SECTION_FUNCTION \
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DTOR_SECTION_FUNCTION
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#define CTOR_SECTION_FUNCTION \
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void \
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ctor_section () \
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{ \
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if (in_section != in_ctor) \
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{ \
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fprintf (asm_out_file, "\t.section .ctor\n"); \
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in_section = in_ctor; \
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} \
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}
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#define DTOR_SECTION_FUNCTION \
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void \
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dtor_section () \
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{ \
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if (in_section != in_dtor) \
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{ \
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fprintf (asm_out_file, "\t.section .dtor\n"); \
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in_section = in_dtor; \
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} \
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}
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#define ASM_OUTPUT_CONSTRUCTOR(FILE,NAME) \
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do { \
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ctor_section (); \
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fprintf (FILE, "%s\t", ASM_LONG); \
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assemble_name (FILE, NAME); \
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fprintf (FILE, "\n"); \
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} while (0)
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#define ASM_OUTPUT_DESTRUCTOR(FILE,NAME) \
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do { \
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dtor_section (); \
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fprintf (FILE, "%s\t", ASM_LONG); \
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assemble_name (FILE, NAME); \
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fprintf (FILE, "\n"); \
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} while (0)
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/* Define this macro if references to a symbol must be treated
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differently depending on something about the variable or
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function named by the symbol (such as what section it is in).
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On i386, if using PIC, mark a SYMBOL_REF for a non-global symbol
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so that we may access it directly in the GOT.
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On i386 running Windows NT, modify the assembler name with a suffix
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consisting of an atsign (@) followed by string of digits that represents
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the number of bytes of arguments passed to the function, if it has the
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attribute STDCALL. */
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#ifdef ENCODE_SECTION_INFO
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#undef ENCODE_SECTION_INFO
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#define ENCODE_SECTION_INFO(DECL) \
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do \
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{ \
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if (flag_pic) \
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{ \
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rtx rtl = (TREE_CODE_CLASS (TREE_CODE (DECL)) != 'd' \
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? TREE_CST_RTL (DECL) : DECL_RTL (DECL)); \
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SYMBOL_REF_FLAG (XEXP (rtl, 0)) \
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= (TREE_CODE_CLASS (TREE_CODE (DECL)) != 'd' \
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|| ! TREE_PUBLIC (DECL)); \
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} \
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if (TREE_CODE (DECL) == FUNCTION_DECL) \
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if (lookup_attribute ("stdcall", \
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TYPE_ATTRIBUTES (TREE_TYPE (DECL)))) \
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XEXP (DECL_RTL (DECL), 0) = \
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gen_rtx (SYMBOL_REF, Pmode, gen_stdcall_suffix (DECL)); \
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} \
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while (0)
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#endif
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/* Emit code to check the stack when allocating more that 20
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bytes in one go. */
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#define CHECK_STACK_LIMIT 20
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/* By default, target has a 80387, uses IEEE compatible arithmetic,
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and returns float values in the 387 and needs stack probes */
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#undef TARGET_DEFAULT
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#define TARGET_DEFAULT \
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(MASK_80387 | MASK_IEEE_FP | MASK_FLOAT_RETURNS | MASK_STACK_PROBE)
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#define DBX_DEBUGGING_INFO
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#define SDB_DEBUGGING_INFO
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#define PREFERRED_DEBUGGING_TYPE DBX_DEBUG
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/* A C statement to output something to the assembler file to switch to section
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NAME for object DECL which is either a FUNCTION_DECL, a VAR_DECL or
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NULL_TREE. Some target formats do not support arbitrary sections. Do not
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define this macro in such cases. */
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#define ASM_OUTPUT_SECTION_NAME(FILE, DECL, NAME) \
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fprintf (FILE, "\t.section %s\n", NAME)
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#undef ASM_OUTPUT_SOURCE_LINE
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#define ASM_OUTPUT_SOURCE_LINE(file, line) \
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do \
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{ \
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static int sym_lineno = 1; \
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fprintf (file, "\t.stabn 68,0,%d,.LM%d-", \
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line, sym_lineno); \
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assemble_name (file, XSTR (XEXP (DECL_RTL (current_function_decl), 0), 0)); \
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fprintf (file, "\n.LM%d:\n", sym_lineno); \
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sym_lineno += 1; \
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} \
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while (0)
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/* Generate a blank trailing N_SO to mark the end of the .o file, since
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we can't depend upon the linker to mark .o file boundaries with
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embedded stabs. */
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#define DBX_OUTPUT_MAIN_SOURCE_FILE_END(FILE, FILENAME) \
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fprintf (FILE, \
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"\t.text\n\t.stabs \"\",%d,0,0,Letext\nLetext:\n", N_SO)
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/* Make LBRAC and RBRAC addresses relative to the start of the
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function. The native Solaris stabs debugging format works this
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way, gdb expects it, and it reduces the number of relocation
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entries. */
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#define DBX_BLOCKS_FUNCTION_RELATIVE 1
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/* In order for relative line numbers to work, we must output the
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stabs entry for the function name first. */
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#define DBX_FUNCTION_FIRST
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/* This is how to output an assembler line
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that says to advance the location counter
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to a multiple of 2**LOG bytes. */
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#undef ASM_OUTPUT_ALIGN
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#define ASM_OUTPUT_ALIGN(FILE,LOG) \
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if ((LOG)!=0) fprintf ((FILE), "\t.align %d\n", 1<<(LOG))
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