llvm-gcc-4.0/gcc/config/sol2.h - llvm-archive - Git at Google

 /* Operating system specific defines to be used when targeting GCC for any
    Solaris 2 system.
    Copyright 2002, 2003, 2004 Free Software Foundation, 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 2, 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 COPYING.  If not, write to
 the Free Software Foundation, 59 Temple Place - Suite 330,
 Boston, MA 02111-1307, USA.  */

 /* We use stabs-in-elf for debugging, because that is what the native
    toolchain uses.  */
 #undef PREFERRED_DEBUGGING_TYPE
 #define PREFERRED_DEBUGGING_TYPE DBX_DEBUG

 /* Solaris 2 (at least as of 2.5.1) uses a 32-bit wchar_t.  */
 #undef WCHAR_TYPE
 #define WCHAR_TYPE "long int"

 #undef WCHAR_TYPE_SIZE
 #define WCHAR_TYPE_SIZE BITS_PER_WORD

 /* Solaris 2 uses a wint_t different from the default. This is required
    by the SCD 2.4.1, p. 6-83, Figure 6-66.  */
 #undef	WINT_TYPE
 #define	WINT_TYPE "long int"

 #undef	WINT_TYPE_SIZE
 #define	WINT_TYPE_SIZE BITS_PER_WORD

 #define TARGET_HANDLE_PRAGMA_REDEFINE_EXTNAME 1

 /* ??? Note: in order for -compat-bsd to work fully,
    we must somehow arrange to fixincludes /usr/ucbinclude
    and put the result in $(libsubdir)/ucbinclude.  */

 #undef CPP_SUBTARGET_SPEC
 #define CPP_SUBTARGET_SPEC "\
 %{pthreads:-D_REENTRANT -D_PTHREADS} \
 %{!pthreads:%{threads:-D_REENTRANT -D_SOLARIS_THREADS}} \
 %{compat-bsd:-iwithprefixbefore ucbinclude -I/usr/ucbinclude} \
 "

 /* Names to predefine in the preprocessor for this target machine.  */
 #define TARGET_SUB_OS_CPP_BUILTINS()
 #define TARGET_OS_CPP_BUILTINS()			\
     do {						\
 	builtin_define_std ("unix");			\
 	builtin_define_std ("sun");			\
 	builtin_define ("__svr4__");			\
 	builtin_define ("__SVR4");			\
 	builtin_assert ("system=unix");			\
 	builtin_assert ("system=svr4");			\
 	/* For C++ we need to add some additional macro	\
 	   definitions required by the C++ standard	\
 	   library.  */					\
 	if (c_dialect_cxx ())				\
 	  {						\
 	    builtin_define ("_XOPEN_SOURCE=500");	\
 	    builtin_define ("_LARGEFILE_SOURCE=1");	\
 	    builtin_define ("_LARGEFILE64_SOURCE=1");	\
 	    builtin_define ("__EXTENSIONS__");		\
 	  }						\
 	if (flag_pic)					\
 	  {						\
 	    builtin_define ("__PIC__");			\
 	    builtin_define ("__pic__");			\
 	  }						\
 	TARGET_SUB_OS_CPP_BUILTINS();			\
     } while (0)

 /* The system headers under Solaris 2 are C++-aware since 2.0.  */
 #define NO_IMPLICIT_EXTERN_C

 /* The sun bundled assembler doesn't accept -Yd, (and neither does gas).
    It's safe to pass -s always, even if -g is not used.  */
 #undef ASM_SPEC
 #define ASM_SPEC "\
 %{v:-V} %{Qy:} %{!Qn:-Qy} %{n} %{T} %{Ym,*} %{Wa,*:%*} -s \
 %{fpic|fpie|fPIC|fPIE:-K PIC} \
 %(asm_cpu) \
 "

 /* We don't use the standard LIB_SPEC only because we don't yet support c++.  */
 #undef LIB_SPEC
 #define LIB_SPEC \
   "%{compat-bsd:-lucb -lsocket -lnsl -lelf -laio} \
    %{!shared:\
      %{!symbolic:\
        %{pthreads:-lpthread} \
        %{!pthreads:%{threads:-lthread}} \
        %{p|pg:-ldl} -lc}}"

 #undef  ENDFILE_SPEC
 #define ENDFILE_SPEC "crtend.o%s crtn.o%s"

 /* We don't use the standard svr4 STARTFILE_SPEC because it's wrong for us.  */
 #undef STARTFILE_SPEC
 #define STARTFILE_SPEC "%{!shared: \
 			 %{!symbolic: \
 			  %{p:mcrt1.o%s} \
                           %{!p: \
 	                    %{pg:gcrt1.o%s gmon.o%s} \
                             %{!pg:crt1.o%s}}}} \
 			crti.o%s %(startfile_arch) \
 			crtbegin.o%s"

 #undef STARTFILE_ARCH32_SPEC
 #define STARTFILE_ARCH32_SPEC "%{ansi:values-Xc.o%s} \
 			    %{!ansi:values-Xa.o%s}"

 #undef STARTFILE_ARCH_SPEC
 #define STARTFILE_ARCH_SPEC STARTFILE_ARCH32_SPEC

 #undef LINK_ARCH32_SPEC_BASE
 #define LINK_ARCH32_SPEC_BASE \
   "%{G:-G} \
    %{YP,*} \
    %{R*} \
    %{compat-bsd: \
      %{!YP,*:%{p|pg:-Y P,/usr/ucblib:/usr/ccs/lib/libp:/usr/lib/libp:/usr/ccs/lib:/usr/lib} \
              %{!p:%{!pg:-Y P,/usr/ucblib:/usr/ccs/lib:/usr/lib}}} \
              -R /usr/ucblib} \
    %{!compat-bsd: \
      %{!YP,*:%{p|pg:-Y P,/usr/ccs/lib/libp:/usr/lib/libp:/usr/ccs/lib:/usr/lib} \
              %{!p:%{!pg:-Y P,/usr/ccs/lib:/usr/lib}}}}"

 #undef LINK_ARCH32_SPEC
 #define LINK_ARCH32_SPEC LINK_ARCH32_SPEC_BASE

 #undef LINK_ARCH_SPEC
 #define LINK_ARCH_SPEC LINK_ARCH32_SPEC

 /* This should be the same as in svr4.h, except with -R added.  */
 #undef  LINK_SPEC
 #define LINK_SPEC \
   "%{h*} %{v:-V} \
    %{b} %{Wl,*:%*} \
    %{static:-dn -Bstatic} \
    %{shared:-G -dy %{!mimpure-text:-z text}} \
    %{symbolic:-Bsymbolic -G -dy -z text} \
    %(link_arch) \
    %{Qy:} %{!Qn:-Qy}"

 /* The Solaris linker doesn't understand constructor priorities.  (The
    GNU linker does support constructor priorities, so GNU ld
    configuration files for Solaris override this setting.)  */
 #undef SUPPORTS_INIT_PRIORITY
 #define SUPPORTS_INIT_PRIORITY 0

 /* This defines which switch letters take arguments.
    It is as in svr4.h but with -R added.  */
 #undef SWITCH_TAKES_ARG
 #define SWITCH_TAKES_ARG(CHAR) \
   (DEFAULT_SWITCH_TAKES_ARG(CHAR) \
    || (CHAR) == 'R' \
    || (CHAR) == 'h' \
    || (CHAR) == 'z')

 #define STDC_0_IN_SYSTEM_HEADERS 1

 /*
  * Attempt to turn on access permissions for the stack.
  *
  * _SC_STACK_PROT is only defined for post 2.6, but we want this code
  * to run always.  2.6 can change the stack protection but has no way to
  * query it.
  *
  */

 /* sys/mman.h is not present on some non-Solaris configurations
    that use sol2.h, so ENABLE_EXECUTE_STACK must use a magic
    number instead of the appropriate PROT_* flags.  */

 #define ENABLE_EXECUTE_STACK					\
 									\
 /* #define STACK_PROT_RWX (PROT_READ | PROT_WRITE | PROT_EXEC) */	\
 									\
 static int need_enable_exec_stack;					\
 									\
 static void check_enabling(void) __attribute__ ((constructor));		\
 static void check_enabling(void)					\
 {									\
   extern long sysconf(int);						\
 									\
   int prot = (int) sysconf(515 /* _SC_STACK_PROT */);			\
   if (prot != 7 /* STACK_PROT_RWX */)					\
     need_enable_exec_stack = 1;						\
 }									\
 									\
 extern void __enable_execute_stack (void *);				\
 void									\
 __enable_execute_stack (void *addr)					\
 {									\
   extern int mprotect(void *, size_t, int);				\
   if (!need_enable_exec_stack)						\
     return;								\
   else {								\
     long size = getpagesize ();						\
     long mask = ~(size-1);						\
     char *page = (char *) (((long) addr) & mask); 			\
     char *end  = (char *) ((((long) (addr + TRAMPOLINE_SIZE)) & mask) + size); \
 									\
     if (mprotect (page, end - page, 7 /* STACK_PROT_RWX */) < 0)	\
       perror ("mprotect of trampoline code");				\
   }									\
 }

 /* Support Solaris-specific format checking for cmn_err.  */
 #define TARGET_N_FORMAT_TYPES 1
 #define TARGET_FORMAT_TYPES solaris_format_types

 /* #pragma init and #pragma fini are implemented on top of init and
    fini attributes.  */
 #define SOLARIS_ATTRIBUTE_TABLE						\
   { "init",      0, 0, true,  false,  false, NULL },			\
   { "fini",      0, 0, true,  false,  false, NULL }

 /* This is how to declare the size of a function.  For Solaris, we output
    any .init or .fini entries here.  */
 #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);			\
       solaris_output_init_fini (FILE, DECL);			\
     }								\
   while (0)

 /* Register the Solaris-specific #pragma directives.  */
 #define REGISTER_TARGET_PRAGMAS() solaris_register_pragmas ()

 extern GTY(()) tree solaris_pending_aligns;
 extern GTY(()) tree solaris_pending_inits;
 extern GTY(()) tree solaris_pending_finis;

 /* Allow macro expansion in #pragma pack.  */
 #define HANDLE_PRAGMA_PACK_WITH_EXPANSION
	/* Operating system specific defines to be used when targeting GCC for any
	Solaris 2 system.
	Copyright 2002, 2003, 2004 Free Software Foundation, 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 2, 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 COPYING. If not, write to
	the Free Software Foundation, 59 Temple Place - Suite 330,
	Boston, MA 02111-1307, USA. */

	/* We use stabs-in-elf for debugging, because that is what the native
	toolchain uses. */
	#undef PREFERRED_DEBUGGING_TYPE
	#define PREFERRED_DEBUGGING_TYPE DBX_DEBUG

	/* Solaris 2 (at least as of 2.5.1) uses a 32-bit wchar_t. */
	#undef WCHAR_TYPE
	#define WCHAR_TYPE "long int"

	#undef WCHAR_TYPE_SIZE
	#define WCHAR_TYPE_SIZE BITS_PER_WORD

	/* Solaris 2 uses a wint_t different from the default. This is required
	by the SCD 2.4.1, p. 6-83, Figure 6-66. */
	#undef WINT_TYPE
	#define WINT_TYPE "long int"

	#undef WINT_TYPE_SIZE
	#define WINT_TYPE_SIZE BITS_PER_WORD

	#define TARGET_HANDLE_PRAGMA_REDEFINE_EXTNAME 1

	/* ??? Note: in order for -compat-bsd to work fully,
	we must somehow arrange to fixincludes /usr/ucbinclude
	and put the result in $(libsubdir)/ucbinclude. */

	#undef CPP_SUBTARGET_SPEC
	#define CPP_SUBTARGET_SPEC "\
	%{pthreads:-D_REENTRANT -D_PTHREADS} \
	%{!pthreads:%{threads:-D_REENTRANT -D_SOLARIS_THREADS}} \
	%{compat-bsd:-iwithprefixbefore ucbinclude -I/usr/ucbinclude} \
	"

	/* Names to predefine in the preprocessor for this target machine. */
	#define TARGET_SUB_OS_CPP_BUILTINS()
	#define TARGET_OS_CPP_BUILTINS() \
	do { \
	builtin_define_std ("unix"); \
	builtin_define_std ("sun"); \
	builtin_define ("__svr4__"); \
	builtin_define ("__SVR4"); \
	builtin_assert ("system=unix"); \
	builtin_assert ("system=svr4"); \
	/* For C++ we need to add some additional macro \
	definitions required by the C++ standard \
	library. */ \
	if (c_dialect_cxx ()) \
	{ \
	builtin_define ("_XOPEN_SOURCE=500"); \
	builtin_define ("_LARGEFILE_SOURCE=1"); \
	builtin_define ("_LARGEFILE64_SOURCE=1"); \
	builtin_define ("__EXTENSIONS__"); \
	} \
	if (flag_pic) \
	{ \
	builtin_define ("__PIC__"); \
	builtin_define ("__pic__"); \
	} \
	TARGET_SUB_OS_CPP_BUILTINS(); \
	} while (0)

	/* The system headers under Solaris 2 are C++-aware since 2.0. */
	#define NO_IMPLICIT_EXTERN_C

	/* The sun bundled assembler doesn't accept -Yd, (and neither does gas).
	It's safe to pass -s always, even if -g is not used. */
	#undef ASM_SPEC
	#define ASM_SPEC "\
	%{v:-V} %{Qy:} %{!Qn:-Qy} %{n} %{T} %{Ym,} %{Wa,:%*} -s \
	%{fpic\|fpie\|fPIC\|fPIE:-K PIC} \
	%(asm_cpu) \
	"

	/* We don't use the standard LIB_SPEC only because we don't yet support c++. */
	#undef LIB_SPEC
	#define LIB_SPEC \
	"%{compat-bsd:-lucb -lsocket -lnsl -lelf -laio} \
	%{!shared:\
	%{!symbolic:\
	%{pthreads:-lpthread} \
	%{!pthreads:%{threads:-lthread}} \
	%{p\|pg:-ldl} -lc}}"

	#undef ENDFILE_SPEC
	#define ENDFILE_SPEC "crtend.o%s crtn.o%s"

	/* We don't use the standard svr4 STARTFILE_SPEC because it's wrong for us. */
	#undef STARTFILE_SPEC
	#define STARTFILE_SPEC "%{!shared: \
	%{!symbolic: \
	%{p:mcrt1.o%s} \
	%{!p: \
	%{pg:gcrt1.o%s gmon.o%s} \
	%{!pg:crt1.o%s}}}} \
	crti.o%s %(startfile_arch) \
	crtbegin.o%s"

	#undef STARTFILE_ARCH32_SPEC
	#define STARTFILE_ARCH32_SPEC "%{ansi:values-Xc.o%s} \
	%{!ansi:values-Xa.o%s}"

	#undef STARTFILE_ARCH_SPEC
	#define STARTFILE_ARCH_SPEC STARTFILE_ARCH32_SPEC

	#undef LINK_ARCH32_SPEC_BASE
	#define LINK_ARCH32_SPEC_BASE \
	"%{G:-G} \
	%{YP,*} \
	%{R*} \
	%{compat-bsd: \
	%{!YP,*:%{p\|pg:-Y P,/usr/ucblib:/usr/ccs/lib/libp:/usr/lib/libp:/usr/ccs/lib:/usr/lib} \
	%{!p:%{!pg:-Y P,/usr/ucblib:/usr/ccs/lib:/usr/lib}}} \
	-R /usr/ucblib} \
	%{!compat-bsd: \
	%{!YP,*:%{p\|pg:-Y P,/usr/ccs/lib/libp:/usr/lib/libp:/usr/ccs/lib:/usr/lib} \
	%{!p:%{!pg:-Y P,/usr/ccs/lib:/usr/lib}}}}"

	#undef LINK_ARCH32_SPEC
	#define LINK_ARCH32_SPEC LINK_ARCH32_SPEC_BASE

	#undef LINK_ARCH_SPEC
	#define LINK_ARCH_SPEC LINK_ARCH32_SPEC

	/* This should be the same as in svr4.h, except with -R added. */
	#undef LINK_SPEC
	#define LINK_SPEC \
	"%{h*} %{v:-V} \
	%{b} %{Wl,:%} \
	%{static:-dn -Bstatic} \
	%{shared:-G -dy %{!mimpure-text:-z text}} \
	%{symbolic:-Bsymbolic -G -dy -z text} \
	%(link_arch) \
	%{Qy:} %{!Qn:-Qy}"

	/* The Solaris linker doesn't understand constructor priorities. (The
	GNU linker does support constructor priorities, so GNU ld
	configuration files for Solaris override this setting.) */
	#undef SUPPORTS_INIT_PRIORITY
	#define SUPPORTS_INIT_PRIORITY 0

	/* This defines which switch letters take arguments.
	It is as in svr4.h but with -R added. */
	#undef SWITCH_TAKES_ARG
	#define SWITCH_TAKES_ARG(CHAR) \
	(DEFAULT_SWITCH_TAKES_ARG(CHAR) \
	\|\| (CHAR) == 'R' \
	\|\| (CHAR) == 'h' \
	\|\| (CHAR) == 'z')

	#define STDC_0_IN_SYSTEM_HEADERS 1

	/*
	* Attempt to turn on access permissions for the stack.
	*
	* _SC_STACK_PROT is only defined for post 2.6, but we want this code
	* to run always. 2.6 can change the stack protection but has no way to
	* query it.
	*
	*/

	/* sys/mman.h is not present on some non-Solaris configurations
	that use sol2.h, so ENABLE_EXECUTE_STACK must use a magic
	number instead of the appropriate PROT_* flags. */

	#define ENABLE_EXECUTE_STACK \
	\
	/* #define STACK_PROT_RWX (PROT_READ \| PROT_WRITE \| PROT_EXEC) */ \
	\
	static int need_enable_exec_stack; \
	\
	static void check_enabling(void) __attribute__ ((constructor)); \
	static void check_enabling(void) \
	{ \
	extern long sysconf(int); \
	\
	int prot = (int) sysconf(515 /* _SC_STACK_PROT */); \
	if (prot != 7 /* STACK_PROT_RWX */) \
	need_enable_exec_stack = 1; \
	} \
	\
	extern void __enable_execute_stack (void *); \
	void \
	__enable_execute_stack (void *addr) \
	{ \
	extern int mprotect(void *, size_t, int); \
	if (!need_enable_exec_stack) \
	return; \
	else { \
	long size = getpagesize (); \
	long mask = ~(size-1); \
	char page = (char ) (((long) addr) & mask); \
	char end = (char ) ((((long) (addr + TRAMPOLINE_SIZE)) & mask) + size); \
	\
	if (mprotect (page, end - page, 7 /* STACK_PROT_RWX */) < 0) \
	perror ("mprotect of trampoline code"); \
	} \
	}

	/* Support Solaris-specific format checking for cmn_err. */
	#define TARGET_N_FORMAT_TYPES 1
	#define TARGET_FORMAT_TYPES solaris_format_types

	/* #pragma init and #pragma fini are implemented on top of init and
	fini attributes. */
	#define SOLARIS_ATTRIBUTE_TABLE \
	{ "init", 0, 0, true, false, false, NULL }, \
	{ "fini", 0, 0, true, false, false, NULL }

	/* This is how to declare the size of a function. For Solaris, we output
	any .init or .fini entries here. */
	#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); \
	solaris_output_init_fini (FILE, DECL); \
	} \
	while (0)

	/* Register the Solaris-specific #pragma directives. */
	#define REGISTER_TARGET_PRAGMAS() solaris_register_pragmas ()

	extern GTY(()) tree solaris_pending_aligns;
	extern GTY(()) tree solaris_pending_inits;
	extern GTY(()) tree solaris_pending_finis;

	/* Allow macro expansion in #pragma pack. */
	#define HANDLE_PRAGMA_PACK_WITH_EXPANSION