gcc/config/arm/unknown-elf.h - gcc - Git at Google

 /* Definitions for non-Linux based ARM systems using ELF
    Copyright (C) 1998, 1999, 2000 Free Software Foundation, Inc.
    Contributed by Catherine Moore <clm@cygnus.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 this program; see the file COPYING.  If not, write to
 the Free Software Foundation, 59 Temple Place - Suite 330,
 Boston, MA 02111-1307, USA.  */

 /* Run-time Target Specification.  */
 #ifndef TARGET_VERSION
 #define TARGET_VERSION	fputs (" (ARM/ELF non-Linux)", stderr);
 #endif

 /* Default to using APCS-32 and software floating point.  */
 #ifndef TARGET_DEFAULT
 #define TARGET_DEFAULT	(ARM_FLAG_SOFT_FLOAT | ARM_FLAG_APCS_32 | ARM_FLAG_APCS_FRAME)
 #endif

 /* Now we define the strings used to build the spec file.  */
 #define STARTFILE_SPEC	"crtbegin%O%s crt0%O%s"

 #define ENDFILE_SPEC	"crtend%O%s"

 #define USER_LABEL_PREFIX 	""
 #define LOCAL_LABEL_PREFIX 	"."

 #define TEXT_SECTION "		.text"

 #define INVOKE__main

 /* Debugging */
 #define DWARF_DEBUGGING_INFO
 #define DWARF2_DEBUGGING_INFO
 #define PREFERRED_DEBUGGING_TYPE DWARF2_DEBUG

 /* Support for Constructors and Destrcutors .  */
 #define READONLY_DATA_SECTION	rdata_section

 /* A list of other sections which the compiler might be "in" at any
    given time.  */
 #define SUBTARGET_EXTRA_SECTIONS in_rdata,

 /* A list of extra section function definitions.  */
 #define SUBTARGET_EXTRA_SECTION_FUNCTIONS	RDATA_SECTION_FUNCTION

 #define RDATA_SECTION_ASM_OP	"\t.section .rodata"

 #define RDATA_SECTION_FUNCTION 					\
 void								\
 rdata_section ()						\
 {								\
   if (in_section != in_rdata)					\
     {								\
       fprintf (asm_out_file, "%s\n", RDATA_SECTION_ASM_OP);	\
       in_section = in_rdata;					\
     }								\
 }

 #define CTOR_LIST_BEGIN					\
   asm (CTORS_SECTION_ASM_OP);				\
   func_ptr __CTOR_LIST__[1] = { (func_ptr) (-1) }

 #define CTOR_LIST_END					\
   asm (CTORS_SECTION_ASM_OP);				\
   func_ptr __CTOR_END__[1] = { (func_ptr) 0 };

 #define DTOR_LIST_BEGIN					\
   asm (DTORS_SECTION_ASM_OP);				\
   func_ptr __DTOR_LIST__[1] = { (func_ptr) (-1) }

 #define DTOR_LIST_END					\
   asm (DTORS_SECTION_ASM_OP);				\
   func_ptr __DTOR_END__[1] = { (func_ptr) 0 };

 /* A C statement to output something to the assembler file to switch to section
    NAME for object DECL which is either a FUNCTION_DECL, a VAR_DECL or
    NULL_TREE.  Some target formats do not support arbitrary sections.  Do not
    define this macro in such cases.  */
 #define ASM_OUTPUT_SECTION_NAME(STREAM, DECL, NAME, RELOC)		\
   do									\
     {									\
       if ((DECL) && TREE_CODE (DECL) == FUNCTION_DECL)			\
         fprintf (STREAM, "\t.section %s,\"ax\",@progbits\n", (NAME));	\
       else if ((DECL) && DECL_READONLY_SECTION (DECL, RELOC))		\
         fprintf (STREAM, "\t.section %s,\"a\"\n", (NAME));		\
       else if (! strncmp (NAME, ".bss", 4))      			\
 	fprintf (STREAM, "\t.section %s,\"aw\",@nobits\n", (NAME));	\
       else								\
         fprintf (STREAM, "\t.section %s,\"aw\"\n", (NAME));		\
     }									\
   while (0)

 /* The ARM development system defines __main.  */
 #define NAME__MAIN "__gccmain"
 #define SYMBOL__MAIN __gccmain

 /* Return a non-zero value if DECL has a section attribute.  */
 #define IN_NAMED_SECTION(DECL)						\
   ((TREE_CODE (DECL) == FUNCTION_DECL || TREE_CODE (DECL) == VAR_DECL)	\
    && DECL_SECTION_NAME (DECL) != NULL_TREE)

 #define MAKE_DECL_ONE_ONLY(DECL) (DECL_WEAK (DECL) = 1)

 #define UNIQUE_SECTION_P(DECL) (DECL_ONE_ONLY (DECL))

 #define UNIQUE_SECTION(DECL, RELOC)					\
   do									\
     {									\
       int len;								\
       int sec;								\
       const char * name;						\
       char * string;							\
       char * prefix;							\
       static char * prefixes[4][2] =					\
       {									\
 	{ ".text.",   ".gnu.linkonce.t." },				\
 	{ ".rodata.", ".gnu.linkonce.r." },				\
 	{ ".data.",   ".gnu.linkonce.d." },				\
         { ".bss.",    ".gnu.linkonce.b." }				\
       };								\
       									\
       if (TREE_CODE (DECL) == FUNCTION_DECL)				\
 	sec = 0;							\
       else if (DECL_READONLY_SECTION (DECL, RELOC))			\
 	sec = 1;							\
       else if (DECL_INITIAL (DECL) == NULL_TREE)			\
 	sec = 3;							\
       else								\
 	sec = 2;							\
       									\
       prefix = prefixes[sec][DECL_ONE_ONLY(DECL)];			\
       name   = IDENTIFIER_POINTER (DECL_ASSEMBLER_NAME (DECL));		\
       									\
       /* Strip off any encoding in name.  */				\
       STRIP_NAME_ENCODING (name, name);					\
 									\
       len    = strlen (name) + strlen (prefix);				\
       string = alloca (len + 1);					\
       									\
       sprintf (string, "%s%s", prefix, name);				\
       									\
       DECL_SECTION_NAME (DECL) = build_string (len, string);		\
     }									\
   while (0)

 #undef  ASM_OUTPUT_ALIGNED_BSS
 #define ASM_OUTPUT_ALIGNED_BSS(FILE, DECL, NAME, SIZE, ALIGN)   	\
   do									\
     {									\
       if (IN_NAMED_SECTION (DECL))					\
 	named_section (DECL, NULL, 0);					\
       else								\
 	bss_section ();							\
       									\
       ASM_GLOBALIZE_LABEL (FILE, NAME);					\
       									\
       ASM_OUTPUT_ALIGN (FILE, floor_log2 (ALIGN / BITS_PER_UNIT));	\
 									\
       last_assemble_variable_decl = DECL;				\
       ASM_DECLARE_OBJECT_NAME (FILE, NAME, DECL);			\
       ASM_OUTPUT_SKIP (FILE, SIZE ? SIZE : 1);				\
     } 									\
   while (0)

 #undef  ASM_OUTPUT_ALIGNED_DECL_LOCAL
 #define ASM_OUTPUT_ALIGNED_DECL_LOCAL(FILE, DECL, NAME, SIZE, ALIGN)	\
   do									\
     {									\
       if (IN_NAMED_SECTION (DECL))					\
 	named_section (DECL, NULL, 0);					\
       else								\
 	bss_section ();							\
 									\
       ASM_OUTPUT_ALIGN (FILE, floor_log2 (ALIGN / BITS_PER_UNIT));	\
       ASM_OUTPUT_LABEL (FILE, NAME);					\
       fprintf (FILE, "\t.space\t%d\n", SIZE);				\
     }									\
   while (0)

 #ifndef CPP_APCS_PC_DEFAULT_SPEC
 #define CPP_APCS_PC_DEFAULT_SPEC	"-D__APCS_32__"
 #endif

 #ifndef SUBTARGET_CPU_DEFAULT
 #define SUBTARGET_CPU_DEFAULT 		TARGET_CPU_arm7tdmi
 #endif

 /* Now get the routine arm-elf definitions.  */
 #include "elf.h"
	/* Definitions for non-Linux based ARM systems using ELF
	Copyright (C) 1998, 1999, 2000 Free Software Foundation, Inc.
	Contributed by Catherine Moore <clm@cygnus.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 this program; see the file COPYING. If not, write to
	the Free Software Foundation, 59 Temple Place - Suite 330,
	Boston, MA 02111-1307, USA. */

	/* Run-time Target Specification. */
	#ifndef TARGET_VERSION
	#define TARGET_VERSION fputs (" (ARM/ELF non-Linux)", stderr);
	#endif

	/* Default to using APCS-32 and software floating point. */
	#ifndef TARGET_DEFAULT
	#define TARGET_DEFAULT (ARM_FLAG_SOFT_FLOAT \| ARM_FLAG_APCS_32 \| ARM_FLAG_APCS_FRAME)
	#endif

	/* Now we define the strings used to build the spec file. */
	#define STARTFILE_SPEC "crtbegin%O%s crt0%O%s"

	#define ENDFILE_SPEC "crtend%O%s"

	#define USER_LABEL_PREFIX ""
	#define LOCAL_LABEL_PREFIX "."

	#define TEXT_SECTION " .text"

	#define INVOKE__main

	/* Debugging */
	#define DWARF_DEBUGGING_INFO
	#define DWARF2_DEBUGGING_INFO
	#define PREFERRED_DEBUGGING_TYPE DWARF2_DEBUG

	/* Support for Constructors and Destrcutors . */
	#define READONLY_DATA_SECTION rdata_section

	/* A list of other sections which the compiler might be "in" at any
	given time. */
	#define SUBTARGET_EXTRA_SECTIONS in_rdata,

	/* A list of extra section function definitions. */
	#define SUBTARGET_EXTRA_SECTION_FUNCTIONS RDATA_SECTION_FUNCTION

	#define RDATA_SECTION_ASM_OP "\t.section .rodata"

	#define RDATA_SECTION_FUNCTION \
	void \
	rdata_section () \
	{ \
	if (in_section != in_rdata) \
	{ \
	fprintf (asm_out_file, "%s\n", RDATA_SECTION_ASM_OP); \
	in_section = in_rdata; \
	} \
	}

	#define CTOR_LIST_BEGIN \
	asm (CTORS_SECTION_ASM_OP); \
	func_ptr __CTOR_LIST__[1] = { (func_ptr) (-1) }

	#define CTOR_LIST_END \
	asm (CTORS_SECTION_ASM_OP); \
	func_ptr __CTOR_END__[1] = { (func_ptr) 0 };

	#define DTOR_LIST_BEGIN \
	asm (DTORS_SECTION_ASM_OP); \
	func_ptr __DTOR_LIST__[1] = { (func_ptr) (-1) }

	#define DTOR_LIST_END \
	asm (DTORS_SECTION_ASM_OP); \
	func_ptr __DTOR_END__[1] = { (func_ptr) 0 };

	/* A C statement to output something to the assembler file to switch to section
	NAME for object DECL which is either a FUNCTION_DECL, a VAR_DECL or
	NULL_TREE. Some target formats do not support arbitrary sections. Do not
	define this macro in such cases. */
	#define ASM_OUTPUT_SECTION_NAME(STREAM, DECL, NAME, RELOC) \
	do \
	{ \
	if ((DECL) && TREE_CODE (DECL) == FUNCTION_DECL) \
	fprintf (STREAM, "\t.section %s,\"ax\",@progbits\n", (NAME)); \
	else if ((DECL) && DECL_READONLY_SECTION (DECL, RELOC)) \
	fprintf (STREAM, "\t.section %s,\"a\"\n", (NAME)); \
	else if (! strncmp (NAME, ".bss", 4)) \
	fprintf (STREAM, "\t.section %s,\"aw\",@nobits\n", (NAME)); \
	else \
	fprintf (STREAM, "\t.section %s,\"aw\"\n", (NAME)); \
	} \
	while (0)

	/* The ARM development system defines __main. */
	#define NAME__MAIN "__gccmain"
	#define SYMBOL__MAIN __gccmain

	/* Return a non-zero value if DECL has a section attribute. */
	#define IN_NAMED_SECTION(DECL) \
	((TREE_CODE (DECL) == FUNCTION_DECL \|\| TREE_CODE (DECL) == VAR_DECL) \
	&& DECL_SECTION_NAME (DECL) != NULL_TREE)

	#define MAKE_DECL_ONE_ONLY(DECL) (DECL_WEAK (DECL) = 1)

	#define UNIQUE_SECTION_P(DECL) (DECL_ONE_ONLY (DECL))

	#define UNIQUE_SECTION(DECL, RELOC) \
	do \
	{ \
	int len; \
	int sec; \
	const char * name; \
	char * string; \
	char * prefix; \
	static char * prefixes[4][2] = \
	{ \
	{ ".text.", ".gnu.linkonce.t." }, \
	{ ".rodata.", ".gnu.linkonce.r." }, \
	{ ".data.", ".gnu.linkonce.d." }, \
	{ ".bss.", ".gnu.linkonce.b." } \
	}; \
	\
	if (TREE_CODE (DECL) == FUNCTION_DECL) \
	sec = 0; \
	else if (DECL_READONLY_SECTION (DECL, RELOC)) \
	sec = 1; \
	else if (DECL_INITIAL (DECL) == NULL_TREE) \
	sec = 3; \
	else \
	sec = 2; \
	\
	prefix = prefixes[sec][DECL_ONE_ONLY(DECL)]; \
	name = IDENTIFIER_POINTER (DECL_ASSEMBLER_NAME (DECL)); \
	\
	/* Strip off any encoding in name. */ \
	STRIP_NAME_ENCODING (name, name); \
	\
	len = strlen (name) + strlen (prefix); \
	string = alloca (len + 1); \
	\
	sprintf (string, "%s%s", prefix, name); \
	\
	DECL_SECTION_NAME (DECL) = build_string (len, string); \
	} \
	while (0)

	#undef ASM_OUTPUT_ALIGNED_BSS
	#define ASM_OUTPUT_ALIGNED_BSS(FILE, DECL, NAME, SIZE, ALIGN) \
	do \
	{ \
	if (IN_NAMED_SECTION (DECL)) \
	named_section (DECL, NULL, 0); \
	else \
	bss_section (); \
	\
	ASM_GLOBALIZE_LABEL (FILE, NAME); \
	\
	ASM_OUTPUT_ALIGN (FILE, floor_log2 (ALIGN / BITS_PER_UNIT)); \
	\
	last_assemble_variable_decl = DECL; \
	ASM_DECLARE_OBJECT_NAME (FILE, NAME, DECL); \
	ASM_OUTPUT_SKIP (FILE, SIZE ? SIZE : 1); \
	} \
	while (0)

	#undef ASM_OUTPUT_ALIGNED_DECL_LOCAL
	#define ASM_OUTPUT_ALIGNED_DECL_LOCAL(FILE, DECL, NAME, SIZE, ALIGN) \
	do \
	{ \
	if (IN_NAMED_SECTION (DECL)) \
	named_section (DECL, NULL, 0); \
	else \
	bss_section (); \
	\
	ASM_OUTPUT_ALIGN (FILE, floor_log2 (ALIGN / BITS_PER_UNIT)); \
	ASM_OUTPUT_LABEL (FILE, NAME); \
	fprintf (FILE, "\t.space\t%d\n", SIZE); \
	} \
	while (0)

	#ifndef CPP_APCS_PC_DEFAULT_SPEC
	#define CPP_APCS_PC_DEFAULT_SPEC "-D__APCS_32__"
	#endif

	#ifndef SUBTARGET_CPU_DEFAULT
	#define SUBTARGET_CPU_DEFAULT TARGET_CPU_arm7tdmi
	#endif

	/* Now get the routine arm-elf definitions. */
	#include "elf.h"