205 lines
6.3 KiB
C
205 lines
6.3 KiB
C
/* Common configuration file for NetBSD a.out targets.
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Copyright (C) 2002 Free Software Foundation, Inc.
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Contributed by Wasabi Systems, 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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/* TARGET_OS_CPP_BUILTINS() common to all NetBSD a.out targets. */
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#define NETBSD_OS_CPP_BUILTINS_AOUT() \
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do \
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{ \
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NETBSD_OS_CPP_BUILTINS_COMMON(); \
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} \
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while (0)
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/* This defines which switch letters take arguments. */
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#undef SWITCH_TAKES_ARG
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#define SWITCH_TAKES_ARG(CHAR) \
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(DEFAULT_SWITCH_TAKES_ARG(CHAR) \
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|| (CHAR) == 'R')
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/* Provide an ASM_SPEC appropriate for NetBSD. Currently we only deal
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with the options for generating PIC code. */
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#undef ASM_SPEC
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#define ASM_SPEC " %| %{fpic:-k} %{fPIC:-k -K}"
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/* Provide a STARTFILE_SPEC appropriate for NetBSD a.out. Here we
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provide support for the special GCC option -static. */
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#undef STARTFILE_SPEC
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#define STARTFILE_SPEC \
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"%{!shared: \
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%{pg:gcrt0%O%s} \
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%{!pg: \
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%{p:mcrt0%O%s} \
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%{!p: \
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%{!static:crt0%O%s} \
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%{static:scrt0%O%s}}}}"
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/* Provide a LINK_SPEC appropriate for NetBSD a.out. Here we provide
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support for the special GCC options -static, -assert, and -nostdlib. */
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#undef NETBSD_LINK_SPEC_AOUT
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#define NETBSD_LINK_SPEC_AOUT \
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"%{nostdlib:-nostdlib} \
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%{!shared: \
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%{!nostdlib: \
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%{!r*: \
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%{!e*:-e start}}} \
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-dc -dp \
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%{static:-Bstatic}} \
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%{shared:-Bshareable} \
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%{R*} \
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%{assert*}"
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/* Default LINK_SPEC. */
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#undef LINK_SPEC
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#define LINK_SPEC NETBSD_LINK_SPEC_AOUT
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/* Some imports from svr4.h in support of shared libraries. */
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/* Define the strings used for the .type, .size, and .set directives.
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These strings generally do not vary from one system running NetBSD
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to another, but if a given system needs to use different pseudo-op
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names for these, they may be overridden in the file included after
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this one. */
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#undef TYPE_ASM_OP
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#undef SIZE_ASM_OP
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#undef SET_ASM_OP
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#define TYPE_ASM_OP "\t.type\t"
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#define SIZE_ASM_OP "\t.size\t"
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#define SET_ASM_OP "\t.set\t"
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/* This is how we tell the assembler that a symbol is weak. */
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#undef ASM_WEAKEN_LABEL
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#define ASM_WEAKEN_LABEL(FILE,NAME) \
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do \
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{ \
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fputs ("\t.globl\t", FILE); assemble_name (FILE, NAME); \
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fputc ('\n', FILE); \
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fputs ("\t.weak\t", FILE); assemble_name (FILE, NAME); \
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fputc ('\n', FILE); \
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} \
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while (0)
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/* The following macro defines the format used to output the second
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operand of the .type assembler directive. Different svr4 assemblers
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expect various different forms of this operand. The one given here
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is just a default. You may need to override it in your machine-
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specific tm.h file (depending on the particulars of your assembler). */
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#undef TYPE_OPERAND_FMT
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#define TYPE_OPERAND_FMT "@%s"
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/* Write the extra assembler code needed to declare a function's result.
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Most svr4 assemblers don't require any special declaration of the
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result value, but there are exceptions. */
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#ifndef ASM_DECLARE_RESULT
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#define ASM_DECLARE_RESULT(FILE, RESULT)
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#endif
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/* These macros generate the special .type and .size directives which
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are used to set the corresponding fields of the linker symbol table
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entries in an ELF object file under SVR4 (and a.out on NetBSD).
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These macros also output the starting labels for the relevant
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functions/objects. */
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/* Write the extra assembler code needed to declare a function properly.
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Some svr4 assemblers need to also have something extra said about the
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function's return value. We allow for that here. */
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#undef ASM_DECLARE_FUNCTION_NAME
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#define ASM_DECLARE_FUNCTION_NAME(FILE, NAME, DECL) \
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do \
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{ \
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ASM_OUTPUT_TYPE_DIRECTIVE (FILE, NAME, "function"); \
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ASM_DECLARE_RESULT (FILE, DECL_RESULT (DECL)); \
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ASM_OUTPUT_LABEL(FILE, NAME); \
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} \
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while (0)
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/* Write the extra assembler code needed to declare an object properly. */
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#define ASM_DECLARE_OBJECT_NAME(FILE, NAME, DECL) \
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do \
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{ \
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HOST_WIDE_INT size; \
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\
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ASM_OUTPUT_TYPE_DIRECTIVE (FILE, NAME, "object"); \
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\
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size_directive_output = 0; \
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if (!flag_inhibit_size_directive \
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&& (DECL) && DECL_SIZE (DECL)) \
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{ \
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size_directive_output = 1; \
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size = int_size_in_bytes (TREE_TYPE (DECL)); \
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ASM_OUTPUT_SIZE_DIRECTIVE (FILE, NAME, size); \
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} \
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\
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ASM_OUTPUT_LABEL (FILE, NAME); \
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} \
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while (0)
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/* Output the size directive for a decl in rest_of_decl_compilation
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in the case where we did not do so before the initializer.
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Once we find the error_mark_node, we know that the value of
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size_directive_output was set
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by ASM_DECLARE_OBJECT_NAME when it was run for the same decl. */
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#undef ASM_FINISH_DECLARE_OBJECT
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#define ASM_FINISH_DECLARE_OBJECT(FILE, DECL, TOP_LEVEL, AT_END) \
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do \
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{ \
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const char *name = XSTR (XEXP (DECL_RTL (DECL), 0), 0); \
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HOST_WIDE_INT size; \
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if (!flag_inhibit_size_directive && DECL_SIZE (DECL) \
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&& ! AT_END && TOP_LEVEL \
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&& DECL_INITIAL (DECL) == error_mark_node \
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&& !size_directive_output) \
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{ \
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size_directive_output = 1; \
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size = int_size_in_bytes (TREE_TYPE (DECL)); \
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ASM_OUTPUT_SIZE_DIRECTIVE (FILE, name, size); \
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} \
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} \
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while (0)
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/* This is how to declare the size of a function. */
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#undef ASM_DECLARE_FUNCTION_SIZE
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#define ASM_DECLARE_FUNCTION_SIZE(FILE, FNAME, DECL) \
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do \
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{ \
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if (!flag_inhibit_size_directive) \
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ASM_OUTPUT_MEASURED_SIZE (FILE, FNAME); \
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} \
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while (0)
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