diff options
Diffstat (limited to 'gcc/config/netbsd-aout.h')
| -rw-r--r-- | gcc/config/netbsd-aout.h | 196 |
1 files changed, 196 insertions, 0 deletions
diff --git a/gcc/config/netbsd-aout.h b/gcc/config/netbsd-aout.h new file mode 100644 index 000000000..7306c156e --- /dev/null +++ b/gcc/config/netbsd-aout.h @@ -0,0 +1,196 @@ +/* Common configuration file for NetBSD a.out targets. + Copyright (C) 2002, 2007, 2010 Free Software Foundation, Inc. + Contributed by Wasabi Systems, Inc. + +This file is part of GCC. + +GCC 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 3, or (at your option) +any later version. + +GCC 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 GCC; see the file COPYING3. If not see +<http://www.gnu.org/licenses/>. */ + +/* TARGET_OS_CPP_BUILTINS() common to all NetBSD a.out targets. */ +#define NETBSD_OS_CPP_BUILTINS_AOUT() \ + do \ + { \ + NETBSD_OS_CPP_BUILTINS_COMMON(); \ + } \ + while (0) + + +/* Provide an ASM_SPEC appropriate for NetBSD. Currently we only deal + with the options for generating PIC code. */ + +#undef ASM_SPEC +#define ASM_SPEC "%{fpic|fpie:-k} %{fPIC|fPIE:-k -K}" + +#define AS_NEEDS_DASH_FOR_PIPED_INPUT + + +/* Provide a STARTFILE_SPEC appropriate for NetBSD a.out. Here we + provide support for the special GCC option -static. */ + +#undef STARTFILE_SPEC +#define STARTFILE_SPEC \ + "%{!shared: \ + %{pg:gcrt0%O%s} \ + %{!pg: \ + %{p:mcrt0%O%s} \ + %{!p: \ + %{!static:crt0%O%s} \ + %{static:scrt0%O%s}}}}" + +/* Provide a LINK_SPEC appropriate for NetBSD a.out. Here we provide + support for the special GCC options -static, -assert, and -nostdlib. */ + +#undef NETBSD_LINK_SPEC_AOUT +#define NETBSD_LINK_SPEC_AOUT \ + "%{nostdlib:-nostdlib} \ + %{!shared: \ + %{!nostdlib: \ + %{!r: \ + %{!e*:-e start}}} \ + -dc -dp \ + %{static:-Bstatic}} \ + %{shared:-Bshareable} \ + %{R*} \ + %{assert*}" + +/* Default LINK_SPEC. */ +#undef LINK_SPEC +#define LINK_SPEC NETBSD_LINK_SPEC_AOUT + +/* Define the strings used for the .type, .size, and .set directives. + These strings generally do not vary from one system running NetBSD + to another, but if a given system needs to use different pseudo-op + names for these, they may be overridden in the file included after + this one. */ + +#undef TYPE_ASM_OP +#undef SIZE_ASM_OP +#undef SET_ASM_OP +#define TYPE_ASM_OP "\t.type\t" +#define SIZE_ASM_OP "\t.size\t" +#define SET_ASM_OP "\t.set\t" + + +/* This is how we tell the assembler that a symbol is weak. */ + +#undef ASM_WEAKEN_LABEL +#define ASM_WEAKEN_LABEL(FILE,NAME) \ + do \ + { \ + fputs ("\t.globl\t", FILE); assemble_name (FILE, NAME); \ + fputc ('\n', FILE); \ + fputs ("\t.weak\t", FILE); assemble_name (FILE, NAME); \ + fputc ('\n', FILE); \ + } \ + while (0) + + +/* The following macro defines the format used to output the second + operand of the .type assembler directive. Different svr4 assemblers + expect various different forms of this operand. The one given here + is just a default. You may need to override it in your machine- + specific tm.h file (depending on the particulars of your assembler). */ + +#undef TYPE_OPERAND_FMT +#define TYPE_OPERAND_FMT "@%s" + + +/* Write the extra assembler code needed to declare a function's result. + Most svr4 assemblers don't require any special declaration of the + result value, but there are exceptions. */ + +#ifndef ASM_DECLARE_RESULT +#define ASM_DECLARE_RESULT(FILE, RESULT) +#endif + + +/* These macros generate the special .type and .size directives which + are used to set the corresponding fields of the linker symbol table + entries in an ELF object file under SVR4 (and a.out on NetBSD). + These macros also output the starting labels for the relevant + functions/objects. */ + +/* Write the extra assembler code needed to declare a function properly. + Some svr4 assemblers need to also have something extra said about the + function's return value. We allow for that here. */ + +#undef ASM_DECLARE_FUNCTION_NAME +#define ASM_DECLARE_FUNCTION_NAME(FILE, NAME, DECL) \ + do \ + { \ + ASM_OUTPUT_TYPE_DIRECTIVE (FILE, NAME, "function"); \ + ASM_DECLARE_RESULT (FILE, DECL_RESULT (DECL)); \ + ASM_OUTPUT_FUNCTION_LABEL (FILE, NAME, DECL); \ + } \ + while (0) + + +/* Write the extra assembler code needed to declare an object properly. */ + +#define ASM_DECLARE_OBJECT_NAME(FILE, NAME, DECL) \ + do \ + { \ + HOST_WIDE_INT size; \ + \ + ASM_OUTPUT_TYPE_DIRECTIVE (FILE, NAME, "object"); \ + \ + size_directive_output = 0; \ + if (!flag_inhibit_size_directive \ + && (DECL) && DECL_SIZE (DECL)) \ + { \ + size_directive_output = 1; \ + size = int_size_in_bytes (TREE_TYPE (DECL)); \ + ASM_OUTPUT_SIZE_DIRECTIVE (FILE, NAME, size); \ + } \ + \ + ASM_OUTPUT_LABEL (FILE, NAME); \ + } \ + while (0) + +/* Output the size directive for a decl in rest_of_decl_compilation + in the case where we did not do so before the initializer. + Once we find the error_mark_node, we know that the value of + size_directive_output was set + by ASM_DECLARE_OBJECT_NAME when it was run for the same decl. */ + +#undef ASM_FINISH_DECLARE_OBJECT +#define ASM_FINISH_DECLARE_OBJECT(FILE, DECL, TOP_LEVEL, AT_END) \ + do \ + { \ + const char *name = XSTR (XEXP (DECL_RTL (DECL), 0), 0); \ + HOST_WIDE_INT size; \ + if (!flag_inhibit_size_directive && DECL_SIZE (DECL) \ + && ! AT_END && TOP_LEVEL \ + && DECL_INITIAL (DECL) == error_mark_node \ + && !size_directive_output) \ + { \ + size_directive_output = 1; \ + size = int_size_in_bytes (TREE_TYPE (DECL)); \ + ASM_OUTPUT_SIZE_DIRECTIVE (FILE, name, size); \ + } \ + } \ + while (0) + + +/* This is how to declare the size of a function. */ + +#undef ASM_DECLARE_FUNCTION_SIZE +#define ASM_DECLARE_FUNCTION_SIZE(FILE, FNAME, DECL) \ + do \ + { \ + if (!flag_inhibit_size_directive) \ + ASM_OUTPUT_MEASURED_SIZE (FILE, FNAME); \ + } \ + while (0) |