gcc/config/pa/pa-linux.h - gcc - Git at Google

 /* Definitions for PA_RISC with ELF format
    Copyright 1999, 2000, 2001, 2002 Free Software Foundation, Inc.

 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.  */

 /* Use DWARF2 debugging info and unwind.  */
 #undef PREFERRED_DEBUGGING_TYPE
 #define PREFERRED_DEBUGGING_TYPE DWARF2_DEBUG
 #define DWARF2_ASM_LINE_DEBUG_INFO 1
 #define DWARF2_UNWIND_INFO 1

 #undef CPP_PREDEFINES
 #define CPP_PREDEFINES "-D__ELF__ -Dunix -D__hppa__ -Dlinux -Asystem=unix -Asystem=posix -Acpu=hppa -Amachine=hppa -Amachine=bigendian"

 #undef	LIB_SPEC
 #define LIB_SPEC \
   "%{shared: -lgcc -lc} \
    %{!shared: %{mieee-fp:-lieee} %{pthread:-lpthread} \
 	%{shared-libgcc: -lgcc} %{profile:-lc_p} %{!profile: -lc}}"

 #undef ASM_SPEC
 #define ASM_SPEC \
   "%{v:-V} %{n} %{T} %{Ym,*} %{Yd,*} %{Wa,*:%*}"

 /* Define this for shared library support because it isn't in the main
    linux.h file.  */

 #undef LINK_SPEC
 #define LINK_SPEC "\
   %{shared:-shared} \
   %{!shared: \
     %{!static: \
       %{rdynamic:-export-dynamic} \
       %{!dynamic-linker:-dynamic-linker /lib/ld.so.1}} \
       %{static:-static}}"

 /* Sibcalls, stubs, and elf sections don't play well.  */
 #undef FUNCTION_OK_FOR_SIBCALL
 #define FUNCTION_OK_FOR_SIBCALL(x) 0

 /* glibc's profiling functions don't need gcc to allocate counters.  */
 #define NO_PROFILE_COUNTERS 1

 /* Put plabels into the data section so we can relocate them.  */
 #undef SELECT_RTX_SECTION
 #define SELECT_RTX_SECTION(MODE,RTX,ALIGN)	\
   if (flag_pic && function_label_operand (RTX, MODE))	\
     data_section ();					\
   else							\
     readonly_data_section ();

 /* A C expression whose value is RTL representing the location of the
    incoming return address at the beginning of any function, before the
    prologue.  */
 #define INCOMING_RETURN_ADDR_RTX  (gen_rtx_REG (word_mode, 2))
 #define DWARF_FRAME_RETURN_COLUMN (DWARF_FRAME_REGNUM (2))

 /* Define the strings used for the special svr4 .type and .size directives.
    These strings generally do not vary from one system running svr4 to
    another, but if a given system (e.g. m88k running svr) needs to use
    different pseudo-op names for these, they may be overridden in the
    file which includes this one.  */

 #undef STRING_ASM_OP
 #define STRING_ASM_OP   ".stringz"

 #define TEXT_SECTION_ASM_OP "\t.text"
 #define DATA_SECTION_ASM_OP "\t.data"
 #define BSS_SECTION_ASM_OP "\t.section\t.bss"

 /* Output at beginning of assembler file.  We override the definition
    from <linux.h> so that we can get the proper .LEVEL directive.  */
 #undef ASM_FILE_START
 #define ASM_FILE_START(FILE) \
   do								\
     {								\
       if (write_symbols != NO_DEBUG)				\
 	{							\
 	  output_file_directive (FILE, main_input_filename);	\
 	  fputs ("\t.version\t\"01.01\"\n", FILE);		\
 	}							\
       if (TARGET_64BIT)						\
 	fputs("\t.LEVEL 2.0w\n", FILE);				\
       else if (TARGET_PA_20)					\
 	fputs("\t.LEVEL 2.0\n", FILE);				\
       else if (TARGET_PA_11)					\
 	fputs("\t.LEVEL 1.1\n", FILE);				\
       else							\
 	fputs("\t.LEVEL 1.0\n", FILE);				\
       if (profile_flag)						\
 	fputs ("\t.IMPORT _mcount, CODE\n", FILE);		\
     }								\
    while (0)

 /* Output a definition */
 #define ASM_OUTPUT_DEF(FILE,LABEL1,LABEL2) \
   do								\
     {								\
       fprintf ((FILE), "\t%s\t", SET_ASM_OP);			\
       assemble_name (FILE, LABEL1);				\
       fprintf (FILE, ",");					\
       assemble_name (FILE, LABEL2);				\
       fprintf (FILE, "\n");					\
     }								\
   while (0)

 /* Define these to generate the Linux/ELF/SysV style of internal
    labels all the time - i.e. to be compatible with
    ASM_GENERATE_INTERNAL_LABEL in <elfos.h>.  Compare these with the
    ones in pa.h and note the lack of dollar signs in these.  FIXME:
    shouldn't we fix pa.h to use ASM_GENERATE_INTERNAL_LABEL instead? */

 #undef ASM_OUTPUT_ADDR_VEC_ELT
 #define ASM_OUTPUT_ADDR_VEC_ELT(FILE, VALUE) \
   if (TARGET_BIG_SWITCH)					\
     fprintf (FILE, "\tstw %%r1,-16(%%r30)\n\tldil LR'.L%d,%%r1\n\tbe RR'.L%d(%%sr4,%%r1)\n\tldw -16(%%r30),%%r1\n", VALUE, VALUE);		\
   else								\
     fprintf (FILE, "\tb .L%d\n\tnop\n", VALUE)

 #undef ASM_OUTPUT_ADDR_DIFF_ELT
 #define ASM_OUTPUT_ADDR_DIFF_ELT(FILE, BODY, VALUE, REL) \
   if (TARGET_BIG_SWITCH)					\
     fprintf (FILE, "\tstw %%r1,-16(%%r30)\n\tldw T'.L%d(%%r19),%%r1\n\tbv %%r0(%%r1)\n\tldw -16(%%r30),%%r1\n", VALUE);				\
   else								\
     fprintf (FILE, "\tb .L%d\n\tnop\n", VALUE)

 /* This is how to output the definition of a user-level label named NAME,
    such as the label on a static function or variable NAME.  */

 #undef ASM_OUTPUT_LABEL
 #define ASM_OUTPUT_LABEL(FILE, NAME) \
   do								\
     {								\
       assemble_name (FILE, NAME);				\
       fputs (":\n", FILE);					\
     }								\
   while (0)

 /* NOTE: ASM_OUTPUT_INTERNAL_LABEL() is defined for us by elfos.h, and
    does what we want (i.e. uses colons).  It must be compatible with
    ASM_GENERATE_INTERNAL_LABEL(), so do not define it here.  */

 #undef ASM_GLOBALIZE_LABEL
 #define ASM_GLOBALIZE_LABEL(FILE, NAME) \
   (fputs (".globl ", FILE), assemble_name (FILE, NAME), fputs ("\n", FILE))

 /* FIXME: Hacked from the <elfos.h> one so that we avoid multiple
    labels in a function declaration (since pa.c seems determined to do
    it differently)  */

 #undef ASM_DECLARE_FUNCTION_NAME
 #define ASM_DECLARE_FUNCTION_NAME(FILE, NAME, DECL)		\
   do								\
     {								\
       fprintf (FILE, "\t%s\t ", 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));		\
     }								\
   while (0)

 /* Linux always uses gas.  */
 #undef TARGET_GAS
 #define TARGET_GAS 1
	/* Definitions for PA_RISC with ELF format
	Copyright 1999, 2000, 2001, 2002 Free Software Foundation, Inc.

	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. */

	/* Use DWARF2 debugging info and unwind. */
	#undef PREFERRED_DEBUGGING_TYPE
	#define PREFERRED_DEBUGGING_TYPE DWARF2_DEBUG
	#define DWARF2_ASM_LINE_DEBUG_INFO 1
	#define DWARF2_UNWIND_INFO 1

	#undef CPP_PREDEFINES
	#define CPP_PREDEFINES "-D__ELF__ -Dunix -D__hppa__ -Dlinux -Asystem=unix -Asystem=posix -Acpu=hppa -Amachine=hppa -Amachine=bigendian"

	#undef LIB_SPEC
	#define LIB_SPEC \
	"%{shared: -lgcc -lc} \
	%{!shared: %{mieee-fp:-lieee} %{pthread:-lpthread} \
	%{shared-libgcc: -lgcc} %{profile:-lc_p} %{!profile: -lc}}"

	#undef ASM_SPEC
	#define ASM_SPEC \
	"%{v:-V} %{n} %{T} %{Ym,} %{Yd,} %{Wa,:%}"

	/* Define this for shared library support because it isn't in the main
	linux.h file. */

	#undef LINK_SPEC
	#define LINK_SPEC "\
	%{shared:-shared} \
	%{!shared: \
	%{!static: \
	%{rdynamic:-export-dynamic} \
	%{!dynamic-linker:-dynamic-linker /lib/ld.so.1}} \
	%{static:-static}}"

	/* Sibcalls, stubs, and elf sections don't play well. */
	#undef FUNCTION_OK_FOR_SIBCALL
	#define FUNCTION_OK_FOR_SIBCALL(x) 0

	/* glibc's profiling functions don't need gcc to allocate counters. */
	#define NO_PROFILE_COUNTERS 1

	/* Put plabels into the data section so we can relocate them. */
	#undef SELECT_RTX_SECTION
	#define SELECT_RTX_SECTION(MODE,RTX,ALIGN) \
	if (flag_pic && function_label_operand (RTX, MODE)) \
	data_section (); \
	else \
	readonly_data_section ();

	/* A C expression whose value is RTL representing the location of the
	incoming return address at the beginning of any function, before the
	prologue. */
	#define INCOMING_RETURN_ADDR_RTX (gen_rtx_REG (word_mode, 2))
	#define DWARF_FRAME_RETURN_COLUMN (DWARF_FRAME_REGNUM (2))

	/* Define the strings used for the special svr4 .type and .size directives.
	These strings generally do not vary from one system running svr4 to
	another, but if a given system (e.g. m88k running svr) needs to use
	different pseudo-op names for these, they may be overridden in the
	file which includes this one. */

	#undef STRING_ASM_OP
	#define STRING_ASM_OP ".stringz"

	#define TEXT_SECTION_ASM_OP "\t.text"
	#define DATA_SECTION_ASM_OP "\t.data"
	#define BSS_SECTION_ASM_OP "\t.section\t.bss"

	/* Output at beginning of assembler file. We override the definition
	from <linux.h> so that we can get the proper .LEVEL directive. */
	#undef ASM_FILE_START
	#define ASM_FILE_START(FILE) \
	do \
	{ \
	if (write_symbols != NO_DEBUG) \
	{ \
	output_file_directive (FILE, main_input_filename); \
	fputs ("\t.version\t\"01.01\"\n", FILE); \
	} \
	if (TARGET_64BIT) \
	fputs("\t.LEVEL 2.0w\n", FILE); \
	else if (TARGET_PA_20) \
	fputs("\t.LEVEL 2.0\n", FILE); \
	else if (TARGET_PA_11) \
	fputs("\t.LEVEL 1.1\n", FILE); \
	else \
	fputs("\t.LEVEL 1.0\n", FILE); \
	if (profile_flag) \
	fputs ("\t.IMPORT _mcount, CODE\n", FILE); \
	} \
	while (0)

	/* Output a definition */
	#define ASM_OUTPUT_DEF(FILE,LABEL1,LABEL2) \
	do \
	{ \
	fprintf ((FILE), "\t%s\t", SET_ASM_OP); \
	assemble_name (FILE, LABEL1); \
	fprintf (FILE, ","); \
	assemble_name (FILE, LABEL2); \
	fprintf (FILE, "\n"); \
	} \
	while (0)

	/* Define these to generate the Linux/ELF/SysV style of internal
	labels all the time - i.e. to be compatible with
	ASM_GENERATE_INTERNAL_LABEL in <elfos.h>. Compare these with the
	ones in pa.h and note the lack of dollar signs in these. FIXME:
	shouldn't we fix pa.h to use ASM_GENERATE_INTERNAL_LABEL instead? */

	#undef ASM_OUTPUT_ADDR_VEC_ELT
	#define ASM_OUTPUT_ADDR_VEC_ELT(FILE, VALUE) \
	if (TARGET_BIG_SWITCH) \
	fprintf (FILE, "\tstw %%r1,-16(%%r30)\n\tldil LR'.L%d,%%r1\n\tbe RR'.L%d(%%sr4,%%r1)\n\tldw -16(%%r30),%%r1\n", VALUE, VALUE); \
	else \
	fprintf (FILE, "\tb .L%d\n\tnop\n", VALUE)

	#undef ASM_OUTPUT_ADDR_DIFF_ELT
	#define ASM_OUTPUT_ADDR_DIFF_ELT(FILE, BODY, VALUE, REL) \
	if (TARGET_BIG_SWITCH) \
	fprintf (FILE, "\tstw %%r1,-16(%%r30)\n\tldw T'.L%d(%%r19),%%r1\n\tbv %%r0(%%r1)\n\tldw -16(%%r30),%%r1\n", VALUE); \
	else \
	fprintf (FILE, "\tb .L%d\n\tnop\n", VALUE)

	/* This is how to output the definition of a user-level label named NAME,
	such as the label on a static function or variable NAME. */

	#undef ASM_OUTPUT_LABEL
	#define ASM_OUTPUT_LABEL(FILE, NAME) \
	do \
	{ \
	assemble_name (FILE, NAME); \
	fputs (":\n", FILE); \
	} \
	while (0)

	/* NOTE: ASM_OUTPUT_INTERNAL_LABEL() is defined for us by elfos.h, and
	does what we want (i.e. uses colons). It must be compatible with
	ASM_GENERATE_INTERNAL_LABEL(), so do not define it here. */

	#undef ASM_GLOBALIZE_LABEL
	#define ASM_GLOBALIZE_LABEL(FILE, NAME) \
	(fputs (".globl ", FILE), assemble_name (FILE, NAME), fputs ("\n", FILE))

	/* FIXME: Hacked from the <elfos.h> one so that we avoid multiple
	labels in a function declaration (since pa.c seems determined to do
	it differently) */

	#undef ASM_DECLARE_FUNCTION_NAME
	#define ASM_DECLARE_FUNCTION_NAME(FILE, NAME, DECL) \
	do \
	{ \
	fprintf (FILE, "\t%s\t ", 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)); \
	} \
	while (0)

	/* Linux always uses gas. */
	#undef TARGET_GAS
	#define TARGET_GAS 1