[thirdparty/gcc.git] / gcc / config / mcore / mcore-elf.h

/* Definitions of MCore target. 
   Copyright (C) 1998, 1999, 2000, 2001, 2002 Free Software Foundation, Inc.
   Contributed by Cygnus Solutions.

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.  */

#ifndef __MCORE_ELF_H__
#define __MCORE_ELF_H__

/* Run-time Target Specification.  */
#define TARGET_VERSION fputs (" (Motorola MCORE/elf)", stderr)

#define SUBTARGET_CPP_PREDEFINES " -D__ELF__"

/* Use DWARF2 debugging info.  */
#ifndef DWARF2_DEBUGGING_INFO
#define DWARF2_DEBUGGING_INFO 1
#endif

#undef  PREFERRED_DEBUGGING_TYPE
#define PREFERRED_DEBUGGING_TYPE DWARF2_DEBUG

/* But allow DWARF 1 if the user wants it.  */
#ifndef DWARF_DEBUGGING_INFO
#define DWARF_DEBUGGING_INFO 1
#endif

#define EXPORTS_SECTION_ASM_OP	"\t.section .exports"

#define SUBTARGET_EXTRA_SECTIONS in_exports

#define SUBTARGET_EXTRA_SECTION_FUNCTIONS	\
  EXPORT_SECTION_FUNCTION

#define EXPORT_SECTION_FUNCTION 				\
void								\
exports_section ()						\
{								\
  if (in_section != in_exports)					\
    {								\
      fprintf (asm_out_file, "%s\n", EXPORTS_SECTION_ASM_OP);	\
      in_section = in_exports;					\
    }								\
}

#define SUBTARGET_SWITCH_SECTIONS		\
  case in_exports: exports_section (); break;


#define MCORE_EXPORT_NAME(STREAM, NAME)			\
  do							\
    {							\
      exports_section ();				\
      fprintf (STREAM, "\t.ascii \" -export:%s\"\n",	\
	       MCORE_STRIP_NAME_ENCODING (NAME));	\
    }							\
  while (0);

/* 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							\
    {							\
      if (mcore_dllexport_name_p (NAME))		\
	{						\
          MCORE_EXPORT_NAME (FILE, NAME);		\
	  function_section (DECL);			\
	}						\
      fprintf (FILE, "%s", TYPE_ASM_OP);		\
      assemble_name (FILE, NAME);			\
      putc (',', FILE);					\
      fprintf (FILE, TYPE_OPERAND_FMT, "function");	\
      putc ('\n', FILE);				\
      ASM_DECLARE_RESULT (FILE, DECL_RESULT (DECL));	\
      ASM_OUTPUT_LABEL (FILE, NAME);			\
    }							\
  while (0)

/* Write the extra assembler code needed to declare an object properly.  */
#undef  ASM_DECLARE_OBJECT_NAME
#define ASM_DECLARE_OBJECT_NAME(FILE, NAME, DECL)				\
  do										\
    {										\
      if (mcore_dllexport_name_p (NAME))					\
        {									\
          enum in_section save_section = in_section;				\
	  MCORE_EXPORT_NAME (FILE, NAME);					\
          switch_to_section (save_section, (DECL));				\
        }									\
      fprintf (FILE, "%s", TYPE_ASM_OP);					\
      assemble_name (FILE, NAME);						\
      putc (',', FILE);								\
      fprintf (FILE, TYPE_OPERAND_FMT, "object");				\
      putc ('\n', FILE);							\
      size_directive_output = 0;						\
      if (!flag_inhibit_size_directive && DECL_SIZE (DECL))			\
        {									\
          size_directive_output = 1;						\
          fprintf (FILE, "%s", SIZE_ASM_OP);					\
          assemble_name (FILE, NAME);						\
          fprintf (FILE, ",%d\n",  int_size_in_bytes (TREE_TYPE (DECL)));	\
        }									\
      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);           \
      if (!flag_inhibit_size_directive && DECL_SIZE (DECL)               \
          && ! AT_END && TOP_LEVEL                                       \
          && DECL_INITIAL (DECL) == error_mark_node                      \
          && !size_directive_output)                                     \
        {                                                                \
          fprintf (FILE, "%s", SIZE_ASM_OP);                             \
          assemble_name (FILE, name);                                    \
          fprintf (FILE, ",%d\n",  int_size_in_bytes (TREE_TYPE (DECL)));\
        }                                                                \
    }                                                                    \
  while (0)


#undef  STARTFILE_SPEC
#define STARTFILE_SPEC "crt0.o%s crti.o%s crtbegin.o%s"

/* Include the OS stub library, so that the code can be simulated.
   This is not the right way to do this.  Ideally this kind of thing
   should be done in the linker script - but I have not worked out how
   to specify the location of a linker script in a gcc command line yet.  */
#undef  ENDFILE_SPEC
#define ENDFILE_SPEC  "%{!mno-lsim:-lsim} crtend.o%s crtn.o%s"

/* The subroutine calls in the .init and .fini sections create literal
   pools which must be jumped around...  */
#define FORCE_CODE_SECTION_ALIGN	asm ("br 1f ; .literals ; 1:");

#undef  CTORS_SECTION_ASM_OP
#define CTORS_SECTION_ASM_OP	"\t.section\t.ctors,\"aw\""
#undef  DTORS_SECTION_ASM_OP
#define DTORS_SECTION_ASM_OP	"\t.section\t.dtors,\"aw\""
     
#endif /* __MCORE_ELF_H__ */
Commit	Line	Data
8f90be4c	1	/* Definitions of MCore target.
cea3bd3e	2	Copyright (C) 1998, 1999, 2000, 2001, 2002 Free Software Foundation, Inc.
8f90be4c NC	3	Contributed by Cygnus Solutions.
	4
	5	This file is part of GNU CC.
	6
	7	GNU CC is free software; you can redistribute it and/or modify
	8	it under the terms of the GNU General Public License as published by
	9	the Free Software Foundation; either version 2, or (at your option)
	10	any later version.
	11
	12	GNU CC is distributed in the hope that it will be useful,
	13	but WITHOUT ANY WARRANTY; without even the implied warranty of
	14	MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
	15	GNU General Public License for more details.
	16
	17	You should have received a copy of the GNU General Public License
	18	along with GNU CC; see the file COPYING. If not, write to
	19	the Free Software Foundation, 59 Temple Place - Suite 330,
	20	Boston, MA 02111-1307, USA. */
	21
	22	#ifndef __MCORE_ELF_H__
	23	#define __MCORE_ELF_H__
	24
	25	/* Run-time Target Specification. */
	26	#define TARGET_VERSION fputs (" (Motorola MCORE/elf)", stderr)
	27
	28	#define SUBTARGET_CPP_PREDEFINES " -D__ELF__"
	29
8f90be4c NC	30	/* Use DWARF2 debugging info. */
	31	#ifndef DWARF2_DEBUGGING_INFO
	32	#define DWARF2_DEBUGGING_INFO 1
	33	#endif
	34
	35	#undef PREFERRED_DEBUGGING_TYPE
	36	#define PREFERRED_DEBUGGING_TYPE DWARF2_DEBUG
	37
	38	/* But allow DWARF 1 if the user wants it. */
	39	#ifndef DWARF_DEBUGGING_INFO
	40	#define DWARF_DEBUGGING_INFO 1
	41	#endif
	42
8f90be4c NC	43	#define EXPORTS_SECTION_ASM_OP "\t.section .exports"
8f90be4c NC	44
d48bc59a	45	#define SUBTARGET_EXTRA_SECTIONS in_exports
8f90be4c NC	46
8f90be4c NC	47	#define SUBTARGET_EXTRA_SECTION_FUNCTIONS \
d48bc59a	48	EXPORT_SECTION_FUNCTION
8f90be4c NC	49
	50	#define EXPORT_SECTION_FUNCTION \
	51	void \
	52	exports_section () \
	53	{ \
	54	if (in_section != in_exports) \
	55	{ \
	56	fprintf (asm_out_file, "%s\n", EXPORTS_SECTION_ASM_OP); \
	57	in_section = in_exports; \
	58	} \
	59	}
	60
	61	#define SUBTARGET_SWITCH_SECTIONS \
d48bc59a	62	case in_exports: exports_section (); break;
8f90be4c NC	63
	64
	65	#define MCORE_EXPORT_NAME(STREAM, NAME) \
	66	do \
	67	{ \
	68	exports_section (); \
	69	fprintf (STREAM, "\t.ascii \" -export:%s\"\n", \
	70	MCORE_STRIP_NAME_ENCODING (NAME)); \
	71	} \
	72	while (0);
	73
	74	/* Write the extra assembler code needed to declare a function properly.
	75	Some svr4 assemblers need to also have something extra said about the
	76	function's return value. We allow for that here. */
	77	#undef ASM_DECLARE_FUNCTION_NAME
	78	#define ASM_DECLARE_FUNCTION_NAME(FILE, NAME, DECL) \
	79	do \
	80	{ \
	81	if (mcore_dllexport_name_p (NAME)) \
	82	{ \
	83	MCORE_EXPORT_NAME (FILE, NAME); \
	84	function_section (DECL); \
	85	} \
016c8440	86	fprintf (FILE, "%s", TYPE_ASM_OP); \
8f90be4c NC	87	assemble_name (FILE, NAME); \
	88	putc (',', FILE); \
	89	fprintf (FILE, TYPE_OPERAND_FMT, "function"); \
	90	putc ('\n', FILE); \
	91	ASM_DECLARE_RESULT (FILE, DECL_RESULT (DECL)); \
	92	ASM_OUTPUT_LABEL (FILE, NAME); \
	93	} \
	94	while (0)
	95
	96	/* Write the extra assembler code needed to declare an object properly. */
	97	#undef ASM_DECLARE_OBJECT_NAME
	98	#define ASM_DECLARE_OBJECT_NAME(FILE, NAME, DECL) \
	99	do \
	100	{ \
	101	if (mcore_dllexport_name_p (NAME)) \
	102	{ \
	103	enum in_section save_section = in_section; \
	104	MCORE_EXPORT_NAME (FILE, NAME); \
	105	switch_to_section (save_section, (DECL)); \
	106	} \
016c8440	107	fprintf (FILE, "%s", TYPE_ASM_OP); \
8f90be4c NC	108	assemble_name (FILE, NAME); \
	109	putc (',', FILE); \
	110	fprintf (FILE, TYPE_OPERAND_FMT, "object"); \
	111	putc ('\n', FILE); \
	112	size_directive_output = 0; \
	113	if (!flag_inhibit_size_directive && DECL_SIZE (DECL)) \
	114	{ \
	115	size_directive_output = 1; \
016c8440	116	fprintf (FILE, "%s", SIZE_ASM_OP); \
8f90be4c NC	117	assemble_name (FILE, NAME); \
	118	fprintf (FILE, ",%d\n", int_size_in_bytes (TREE_TYPE (DECL))); \
	119	} \
	120	ASM_OUTPUT_LABEL(FILE, NAME); \
	121	} \
	122	while (0)
	123
	124	/* Output the size directive for a decl in rest_of_decl_compilation
	125	in the case where we did not do so before the initializer.
	126	Once we find the error_mark_node, we know that the value of
	127	size_directive_output was set
	128	by ASM_DECLARE_OBJECT_NAME when it was run for the same decl. */
	129	#undef ASM_FINISH_DECLARE_OBJECT
	130	#define ASM_FINISH_DECLARE_OBJECT(FILE, DECL, TOP_LEVEL, AT_END) \
	131	do \
	132	{ \
3cce094d	133	const char * name = XSTR (XEXP (DECL_RTL (DECL), 0), 0); \
8f90be4c NC	134	if (!flag_inhibit_size_directive && DECL_SIZE (DECL) \
	135	&& ! AT_END && TOP_LEVEL \
	136	&& DECL_INITIAL (DECL) == error_mark_node \
	137	&& !size_directive_output) \
	138	{ \
016c8440	139	fprintf (FILE, "%s", SIZE_ASM_OP); \
8f90be4c NC	140	assemble_name (FILE, name); \
	141	fprintf (FILE, ",%d\n", int_size_in_bytes (TREE_TYPE (DECL)));\
	142	} \
	143	} \
	144	while (0)
	145
	146
	147	#undef STARTFILE_SPEC
	148	#define STARTFILE_SPEC "crt0.o%s crti.o%s crtbegin.o%s"
	149
	150	/* Include the OS stub library, so that the code can be simulated.
	151	This is not the right way to do this. Ideally this kind of thing
	152	should be done in the linker script - but I have not worked out how
	153	to specify the location of a linker script in a gcc command line yet. */
	154	#undef ENDFILE_SPEC
	155	#define ENDFILE_SPEC "%{!mno-lsim:-lsim} crtend.o%s crtn.o%s"
	156
8f90be4c NC	157	/* The subroutine calls in the .init and .fini sections create literal
8f90be4c NC	158	pools which must be jumped around... */
cea3bd3e	159	#define FORCE_CODE_SECTION_ALIGN asm ("br 1f ; .literals ; 1:");
8f90be4c NC	160
8f90be4c NC	161	#undef CTORS_SECTION_ASM_OP
78d057d8	162	#define CTORS_SECTION_ASM_OP "\t.section\t.ctors,\"aw\""
8f90be4c	163	#undef DTORS_SECTION_ASM_OP
78d057d8	164	#define DTORS_SECTION_ASM_OP "\t.section\t.dtors,\"aw\""
8f90be4c NC	165
8f90be4c NC	166	#endif /* __MCORE_ELF_H__ */