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/* Operating system specific defines to be used when targeting GCC for
generic System V Release 3 system.
Copyright (C) 1991, 1996, 2000, 2002 Free Software Foundation, Inc.
Contributed by Ron Guilmette (rfg@monkeys.com).
This file is part of GNU CC.
GNU CC is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 2, or (at your option)
any later version.
GNU CC is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with GNU CC; see the file COPYING. If not, write to
the Free Software Foundation, 59 Temple Place - Suite 330,
Boston, MA 02111-1307, USA.
To use this file, make up a file with a name like:
?????svr3.h
where ????? is replaced by the name of the basic hardware that you
are targeting for. Then, in the file ?????svr3.h, put something
like:
#include "?????.h"
#include "svr3.h"
*/
/* Define a symbol indicating that we are using svr3.h. */
#define USING_SVR3_H
/* Define a symbol so that libgcc* can know what sort of operating
environment and assembler syntax we are targeting for. */
#define SVR3_target
/* Assembler, linker, library, and startfile spec's. */
/* Output at beginning of assembler file. */
/* The .file command should always begin the output. */
#undef ASM_FILE_START
#define ASM_FILE_START(FILE) \
do { output_file_directive ((FILE), main_input_filename); \
if (optimize) { ASM_FILE_START_1 (FILE); } \
} while (0)
/* By default, do nothing: a few machines support .optim, but not most. */
#undef ASM_FILE_START_1
#define ASM_FILE_START_1(FILE)
/* This says how to output an assembler line
to define a global common symbol. */
/* We don't use ROUNDED because the standard compiler doesn't,
and the linker gives error messages if a common symbol
has more than one length value. */
#undef ASM_OUTPUT_COMMON
#define ASM_OUTPUT_COMMON(FILE, NAME, SIZE, ROUNDED) \
( fputs (".comm ", (FILE)), \
assemble_name ((FILE), (NAME)), \
fprintf ((FILE), ",%u\n", (SIZE)))
/* This says how to output an assembler line
to define a local common symbol. */
/* Note that using bss_section here caused errors
in building shared libraries on system V.3. */
#undef ASM_OUTPUT_LOCAL
#define ASM_OUTPUT_LOCAL(FILE, NAME, SIZE, ROUNDED) \
do { \
int align = exact_log2 (ROUNDED); \
if (align > 2) align = 2; \
data_section (); \
ASM_OUTPUT_ALIGN ((FILE), align == -1 ? 2 : align); \
ASM_OUTPUT_LABEL ((FILE), (NAME)); \
fprintf ((FILE), "\t.set .,.+%u\n", (int)(ROUNDED)); \
} while (0)
#if 0 /* For now, let's leave these machine-specific. */
/* Use crt1.o as a startup file and crtn.o as a closing file. */
#define STARTFILE_SPEC \
"%{pg:gcrt1.o%s}%{!pg:%{p:mcrt1.o%s}%{!p:crt1.o%s}}"
#ifdef CROSS_COMPILE
#define LIB_SPEC "-lc crtn.o%s"
#else
#define LIB_SPEC "%{p:-L/usr/lib/libp}%{pg:-L/usr/lib/libp} -lc crtn.o%s"
#endif
/* Special flags for the linker. I don't know what they do. */
#define LINK_SPEC "%{T*} %{z:-lm}"
#endif
/* Output #ident as a .ident. */
#undef ASM_OUTPUT_IDENT
#define ASM_OUTPUT_IDENT(FILE, NAME) \
fprintf (FILE, "\t.ident \"%s\"\n", NAME);
/* Use periods rather than dollar signs in special g++ assembler names. */
#define NO_DOLLAR_IN_LABEL
/* Implicit library calls should use memcpy, not bcopy, etc. */
#define TARGET_MEM_FUNCTIONS
/* System V Release 3 uses COFF debugging info. */
#define SDB_DEBUGGING_INFO 1
/* We don't want to output DBX debugging information. */
#undef DBX_DEBUGGING_INFO
/* Define the actual types of some ANSI-mandated types. These
definitions should work for most SVR3 systems. */
#undef SIZE_TYPE
#define SIZE_TYPE "unsigned int"
#undef PTRDIFF_TYPE
#define PTRDIFF_TYPE "int"
#undef WCHAR_TYPE
#define WCHAR_TYPE "long int"
#undef WCHAR_TYPE_SIZE
#define WCHAR_TYPE_SIZE BITS_PER_WORD
/* The prefix to add to user-visible assembler symbols.
For System V Release 3 the convention is to prepend a leading
underscore onto user-level symbol names. */
#undef USER_LABEL_PREFIX
#define USER_LABEL_PREFIX "_"
/* This is how to store into the string LABEL
the symbol_ref name of an internal numbered label where
PREFIX is the class of label and NUM is the number within the class.
This is suitable for output with `assemble_name'.
For most svr3 systems, the convention is that any symbol which begins
with a period is not put into the linker symbol table by the assembler. */
#undef ASM_GENERATE_INTERNAL_LABEL
#define ASM_GENERATE_INTERNAL_LABEL(LABEL,PREFIX,NUM) \
sprintf (LABEL, "*%s%s%ld", LOCAL_LABEL_PREFIX, PREFIX, (long)(NUM))
/* We want local labels to start with period if made with asm_fprintf. */
#undef LOCAL_LABEL_PREFIX
#define LOCAL_LABEL_PREFIX "."
/* Support const sections and the ctors and dtors sections for g++. */
/* Define a few machine-specific details of the implementation of
constructors.
The __CTORS_LIST__ goes in the .init section. Define CTOR_LIST_BEGIN
and CTOR_LIST_END to contribute to the .init section an instruction to
push a word containing 0 (or some equivalent of that).
Define TARGET_ASM_CONSTRUCTOR to push the address of the constructor. */
#define INIT_SECTION_ASM_OP "\t.section\t.init"
#define FINI_SECTION_ASM_OP "\t.section .fini,\"x\""
#define DTORS_SECTION_ASM_OP FINI_SECTION_ASM_OP
/* CTOR_LIST_BEGIN and CTOR_LIST_END are machine-dependent
because they push on the stack. */
#ifndef STACK_GROWS_DOWNWARD
/* Constructor list on stack is in reverse order. Go to the end of the
list and go backwards to call constructors in the right order. */
#define DO_GLOBAL_CTORS_BODY \
do { \
func_ptr *p, *beg = alloca (0); \
for (p = beg; *p; p++) \
; \
while (p != beg) \
(*--p) (); \
} while (0)
#else
/* Constructor list on stack is in correct order. Just call them. */
#define DO_GLOBAL_CTORS_BODY \
do { \
func_ptr *p, *beg = alloca (0); \
for (p = beg; *p; ) \
(*p++) (); \
} while (0)
#endif /* STACK_GROWS_DOWNWARD */
#undef EXTRA_SECTIONS
#define EXTRA_SECTIONS in_init, in_fini
#undef EXTRA_SECTION_FUNCTIONS
#define EXTRA_SECTION_FUNCTIONS \
INIT_SECTION_FUNCTION \
FINI_SECTION_FUNCTION
#define INIT_SECTION_FUNCTION \
void \
init_section () \
{ \
if (in_section != in_init) \
{ \
fprintf (asm_out_file, "%s\n", INIT_SECTION_ASM_OP); \
in_section = in_init; \
} \
}
#define FINI_SECTION_FUNCTION \
void \
fini_section () \
{ \
if (in_section != in_fini) \
{ \
fprintf (asm_out_file, "%s\n", FINI_SECTION_ASM_OP); \
in_section = in_fini; \
} \
}
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