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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 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"
-
- followed by any really system-specific defines (or overrides of
- defines) which you find that you need. For example, CPP_PREDEFINES
- is defined here with only the defined -Dunix and -DSVR3. You should
- probably override that in your target-specific ?????svr3.h file
- with a set of defines that includes these, but also contains an
- appropriate define for the type of hardware that you are targeting.
-*/
-
-/* 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
-
-/* Cpp, assembler, linker, library, and startfile spec's. */
-
-/* You should redefine CPP_PREDEFINES in any file which includes this one.
- The definition should be appropriate for the type of target system
- involved, and it should include any -A (assertion) options which are
- appropriate for the given target system. */
-
-#undef CPP_PREDEFINES
-
-/* 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", (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
-
-/* Allow #sccs in preprocessor. */
-
-#define SCCS_DIRECTIVE
-
-/* Output #ident as a .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
-
-/* 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
-
-/* Assembler pseudos to introduce constants of various size. These
- definitions should work for most svr3 systems. */
-
-#undef ASM_BYTE_OP
-#define ASM_BYTE_OP "\t.byte"
-
-/* 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 output an internal numbered label where
- PREFIX is the class of label and NUM is the number within the class.
-
- 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_OUTPUT_INTERNAL_LABEL
-#define ASM_OUTPUT_INTERNAL_LABEL(FILE,PREFIX,NUM) \
- asm_fprintf (FILE, "%0L%s%d:\n", PREFIX, NUM)
-
-/* 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%d", LOCAL_LABEL_PREFIX, PREFIX, 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++.
- Note that there appears to be two different ways to support const
- sections at the moment. You can either #define the symbol
- READONLY_DATA_SECTION (giving it some code which switches to the
- readonly data section) or else you can #define the symbols
- EXTRA_SECTIONS, EXTRA_SECTION_FUNCTIONS, SELECT_SECTION, and
- SELECT_RTX_SECTION. We do both here just to be on the safe side.
- However, use of the const section is turned off by default
- unless the specific tm.h file turns it on by defining
- USE_CONST_SECTION as 1. */
-
-/* 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 ASM_OUTPUT_CONSTRUCTOR to push the address of the constructor. */
-
-#define USE_CONST_SECTION 0
-
-#define INIT_SECTION_ASM_OP ".section\t.init"
-#define FINI_SECTION_ASM_OP ".section .fini,\"x\""
-#define CONST_SECTION_ASM_OP ".section\t.rodata, \"x\""
-#define CTORS_SECTION_ASM_OP INIT_SECTION_ASM_OP
-#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 */
-
-/* Add extra sections .rodata, .init and .fini. */
-
-#undef EXTRA_SECTIONS
-#define EXTRA_SECTIONS in_const, in_init, in_fini
-
-#undef EXTRA_SECTION_FUNCTIONS
-#define EXTRA_SECTION_FUNCTIONS \
- CONST_SECTION_FUNCTION \
- INIT_SECTION_FUNCTION \
- FINI_SECTION_FUNCTION
-
-#define INIT_SECTION_FUNCTION \
-void \
-init_section () \
-{ \
- if (in_section != in_init) \
- { \
- fprintf (asm_out_file, "\t%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, "\t%s\n", FINI_SECTION_ASM_OP); \
- in_section = in_fini; \
- } \
-}
-
-#define READONLY_DATA_SECTION() const_section ()
-
-#define CONST_SECTION_FUNCTION \
-void \
-const_section () \
-{ \
- extern void text_section(); \
- if (!USE_CONST_SECTION) \
- text_section(); \
- else if (in_section != in_const) \
- { \
- fprintf (asm_out_file, "%s\n", CONST_SECTION_ASM_OP); \
- in_section = in_const; \
- } \
-}
-
-/* The ctors and dtors sections are not normally put into use
- by EXTRA_SECTIONS and EXTRA_SECTION_FUNCTIONS as defined in svr3.h,
- but it can't hurt to define these macros for whatever systems use them. */
-#define CTORS_SECTION_FUNCTION \
-void \
-ctors_section () \
-{ \
- if (in_section != in_ctors) \
- { \
- fprintf (asm_out_file, "%s\n", CTORS_SECTION_ASM_OP); \
- in_section = in_ctors; \
- } \
-}
-
-#define DTORS_SECTION_FUNCTION \
-void \
-dtors_section () \
-{ \
- if (in_section != in_dtors) \
- { \
- fprintf (asm_out_file, "%s\n", DTORS_SECTION_ASM_OP); \
- in_section = in_dtors; \
- } \
-}
-
-/* This is machine-dependent
- because it needs to push something on the stack. */
-#undef ASM_OUTPUT_CONSTRUCTOR
-
-/* A C statement (sans semicolon) to output an element in the table of
- global destructors. */
-#define ASM_OUTPUT_DESTRUCTOR(FILE,NAME) \
- do { \
- fini_section (); \
- fprintf (FILE, "%s\t ", ASM_LONG); \
- assemble_name (FILE, NAME); \
- fprintf (FILE, "\n"); \
- } while (0)
-
-/* A C statement or statements to switch to the appropriate
- section for output of DECL. DECL is either a `VAR_DECL' node
- or a constant of some sort. RELOC indicates whether forming
- the initial value of DECL requires link-time relocations. */
-
-#define SELECT_SECTION(DECL,RELOC) \
-{ \
- if (TREE_CODE (DECL) == STRING_CST) \
- { \
- if (! flag_writable_strings) \
- const_section (); \
- else \
- data_section (); \
- } \
- else if (TREE_CODE (DECL) == VAR_DECL) \
- { \
- if ((0 && RELOC) /* should be (flag_pic && RELOC) */ \
- || !TREE_READONLY (DECL) || TREE_SIDE_EFFECTS (DECL) \
- || !DECL_INITIAL (DECL) \
- || (DECL_INITIAL (DECL) != error_mark_node \
- && !TREE_CONSTANT (DECL_INITIAL (DECL)))) \
- data_section (); \
- else \
- const_section (); \
- } \
- else \
- const_section (); \
-}
-
-/* A C statement or statements to switch to the appropriate
- section for output of RTX in mode MODE. RTX is some kind
- of constant in RTL. The argument MODE is redundant except
- in the case of a `const_int' rtx. Currently, these always
- go into the const section. */
-
-#define SELECT_RTX_SECTION(MODE,RTX) const_section()
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