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configure.in (HAVE_LD_PIE): Check for ld -pie.

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* configure.in (HAVE_LD_PIE): Check for ld -pie.
	* config.in: Rebuilt.
	* configure: Rebuilt.
	* toplev.c (flag_pie, flag_shlib): New variables.
	(f_options): Add -fpie and -fPIE.
	(parse_options_and_default_flags): Set flag_pic if -fpie/-fPIE.
	Set flag_shlib if flag_pic and not -fpie/-fPIE.
	* flags.h (flag_pic, flag_shlib): Add.
	* varasm.c (default_binds_local_p): Use flag_shlib instead of
	flag_pic.
	* gcc.c (LINK_PIE_SPEC): Define.
	(LINK_COMMAND_SPEC): Use LINK_PIE_SPEC.
	(option_map): Add --pie -> -pie mapping.
	* config/sol2.h (ASM_SPEC): Handle -fpie the same way as -fpic
	and -fPIE the same way as -fPIC.
	* config/openbsd.h (ASM_SPEC): Likewise.
	* config/frv/frv.h (ASM_SPEC): Likewise.
	* config/arm/linux-gas.h (SUBTARGET_CPP_SPEC): Likewise.
	* config/arm/semi.h (ASM_SPEC): Likewise.
	* config/arm/netbsd-elf.h (SUBTARGET_EXTRA_ASM_SPEC): Likewise.
	* config/freebsd-spec.h (FBSD_CPP_SPEC): Likewise.
	* config/i386/beos-elf.h (CC1_SPEC): Likewise.
	* config/i386/freebsd-aout.h (ASM_SPEC): Likewise.
	* config/m68k/linux.h (CPP_SPEC): Likewise.
	* config/m68k/netbsd.h (ASM_SPEC): Likewise.
	* config/m68k/openbsd.h (ASM_SPEC): Likewise.
	* config/m68k/netbsd-elf.h (ASM_SPEC): Likewise.
	* config/mips/linux.h (SUBTARGET_CPP_SPEC): Likewise.
	* config/mips/openbsd.h (SUBTARGET_ASM_SPEC): Likewise.
	* config/pa/pa-linux.h (CPP_SPEC): Likewise.
	* config/netbsd-aout.h (ASM_SPEC): Likewise.
	* config/rs6000/sysv4.h (ASM_SPEC, CPP_SYSV_SPEC): Likewise.
	* config/rs6000/vxworks.h (CPP_SPEC): Likewise.
	* config/sparc/linux.h (CPP_SUBTARGET_SPEC, ASM_SPEC): Likewise.
	* config/sparc/linux64.h (CPP_SUBTARGET_SPEC, ASM_SPEC): Likewise.
	* config/sparc/sparc.h (ASM_SPEC): Likewise.
	* config/sparc/sp64-elf.h (ASM_SPEC): Likewise.
	* config/sparc/sysv4.h (ASM_SPEC): Likewise.
	* config/sparc/netbsd-elf.h (ASM_SPEC): Likewise.
	* config/sparc/openbsd64.h (ASM_SPEC): Likewise.
	* config/cris/linux.h (CRIS_ASM_SUBTARGET_SPEC): Likewise.
	* config/linux.h (STARTFILE_SPEC, ENDFILE_SPEC): Handle -pie.
	Simplify.
	* config/alpha/elf.h (STARTFILE_SPEC, ENDFILE_SPEC): Likewise.
	* config/i386/linux64.h (STARTFILE_SPEC, ENDFILE_SPEC): Likewise.
	* config/ia64/linux.h (STARTFILE_SPEC, ENDFILE_SPEC): Likewise.
	* config/rs6000/sysv4.h (STARTFILE_SPEC, ENDFILE_SPEC): Likewise.
	* config/rs6000/linux64.h (STARTFILE_SPEC, ENDFILE_SPEC): Likewise.
	* config/sparc/linux.h (STARTFILE_SPEC, ENDFILE_SPEC): Likewise.
	* config/sparc/linux64.h (STARTFILE_SPEC, ENDFILE_SPEC): Likewise.
	* doc/invoke.texi: Document -pie, -fpie and -fPIE options.

From-SVN: r67359
This commit is contained in:
Jakub Jelinek 2003-06-03 11:06:55 +02:00 committed by Jakub Jelinek
parent 8fd3cf4e17
commit 24a4dd31f8
41 changed files with 251 additions and 90 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

54
gcc/ChangeLog
View File

@ -1,3 +1,57 @@
2003-06-03 Jakub Jelinek <jakub@redhat.com>
* configure.in (HAVE_LD_PIE): Check for ld -pie.
* config.in: Rebuilt.
* configure: Rebuilt.
* toplev.c (flag_pie, flag_shlib): New variables.
(f_options): Add -fpie and -fPIE.
(parse_options_and_default_flags): Set flag_pic if -fpie/-fPIE.
Set flag_shlib if flag_pic and not -fpie/-fPIE.
* flags.h (flag_pic, flag_shlib): Add.
* varasm.c (default_binds_local_p): Use flag_shlib instead of
flag_pic.
* gcc.c (LINK_PIE_SPEC): Define.
(LINK_COMMAND_SPEC): Use LINK_PIE_SPEC.
(option_map): Add --pie -> -pie mapping.
* config/sol2.h (ASM_SPEC): Handle -fpie the same way as -fpic
and -fPIE the same way as -fPIC.
* config/openbsd.h (ASM_SPEC): Likewise.
* config/frv/frv.h (ASM_SPEC): Likewise.
* config/arm/linux-gas.h (SUBTARGET_CPP_SPEC): Likewise.
* config/arm/semi.h (ASM_SPEC): Likewise.
* config/arm/netbsd-elf.h (SUBTARGET_EXTRA_ASM_SPEC): Likewise.
* config/freebsd-spec.h (FBSD_CPP_SPEC): Likewise.
* config/i386/beos-elf.h (CC1_SPEC): Likewise.
* config/i386/freebsd-aout.h (ASM_SPEC): Likewise.
* config/m68k/linux.h (CPP_SPEC): Likewise.
* config/m68k/netbsd.h (ASM_SPEC): Likewise.
* config/m68k/openbsd.h (ASM_SPEC): Likewise.
* config/m68k/netbsd-elf.h (ASM_SPEC): Likewise.
* config/mips/linux.h (SUBTARGET_CPP_SPEC): Likewise.
* config/mips/openbsd.h (SUBTARGET_ASM_SPEC): Likewise.
* config/pa/pa-linux.h (CPP_SPEC): Likewise.
* config/netbsd-aout.h (ASM_SPEC): Likewise.
* config/rs6000/sysv4.h (ASM_SPEC, CPP_SYSV_SPEC): Likewise.
* config/rs6000/vxworks.h (CPP_SPEC): Likewise.
* config/sparc/linux.h (CPP_SUBTARGET_SPEC, ASM_SPEC): Likewise.
* config/sparc/linux64.h (CPP_SUBTARGET_SPEC, ASM_SPEC): Likewise.
* config/sparc/sparc.h (ASM_SPEC): Likewise.
* config/sparc/sp64-elf.h (ASM_SPEC): Likewise.
* config/sparc/sysv4.h (ASM_SPEC): Likewise.
* config/sparc/netbsd-elf.h (ASM_SPEC): Likewise.
* config/sparc/openbsd64.h (ASM_SPEC): Likewise.
* config/cris/linux.h (CRIS_ASM_SUBTARGET_SPEC): Likewise.
* config/linux.h (STARTFILE_SPEC, ENDFILE_SPEC): Handle -pie.
Simplify.
* config/alpha/elf.h (STARTFILE_SPEC, ENDFILE_SPEC): Likewise.
* config/i386/linux64.h (STARTFILE_SPEC, ENDFILE_SPEC): Likewise.
* config/ia64/linux.h (STARTFILE_SPEC, ENDFILE_SPEC): Likewise.
* config/rs6000/sysv4.h (STARTFILE_SPEC, ENDFILE_SPEC): Likewise.
* config/rs6000/linux64.h (STARTFILE_SPEC, ENDFILE_SPEC): Likewise.
* config/sparc/linux.h (STARTFILE_SPEC, ENDFILE_SPEC): Likewise.
* config/sparc/linux64.h (STARTFILE_SPEC, ENDFILE_SPEC): Likewise.
* doc/invoke.texi: Document -pie, -fpie and -fPIE options.
2003-06-03 Jakub Jelinek <jakub@redhat.com>
* builtins.c (expand_builtin_memcpy): Remove endp argument and endp

3
gcc/config.in
View File

@ -631,6 +631,9 @@
/* Define if your linker supports --eh-frame-hdr option. */
#undef HAVE_LD_EH_FRAME_HDR
/* Define if your linker supports -pie option. */
#undef HAVE_LD_PIE
/* Define if your MIPS libgloss linker scripts consistently include STARTUP directives. */
#undef HAVE_MIPS_LIBGLOSS_STARTUP_DIRECTIVES

14
gcc/config/alpha/elf.h
View File

@ -413,11 +413,15 @@ void FN () \
before entering `main'. */
#undef STARTFILE_SPEC
#ifdef HAVE_LD_PIE
#define STARTFILE_SPEC \
"%{!shared: \
%{pg:gcrt1.o%s} %{!pg:%{p:gcrt1.o%s} %{!p:crt1.o%s}}}\
crti.o%s %{static:crtbeginT.o%s}\
%{!static:%{shared:crtbeginS.o%s}%{!shared:crtbegin.o%s}}"
"%{!shared: %{pg|p:gcrt1.o%s;pie:Scrt1.o%s;:crt1.o%s}}\
crti.o%s %{static:crtbeginT.o%s;shared|pie:crtbeginS.o%s;:crtbegin.o%s}"
#else
#define STARTFILE_SPEC \
"%{!shared: %{pg|p:gcrt1.o%s;:crt1.o%s}}\
crti.o%s %{static:crtbeginT.o%s;shared|pie:crtbeginS.o%s;:crtbegin.o%s}"
#endif
/* Provide a ENDFILE_SPEC appropriate for ELF. Here we tack on the
magical crtend.o file which provides part of the support for
@ -427,7 +431,7 @@ void FN () \
#undef ENDFILE_SPEC
#define ENDFILE_SPEC \
"%{ffast-math|funsafe-math-optimizations:crtfastmath.o%s} \
%{shared:crtendS.o%s}%{!shared:crtend.o%s} crtn.o%s"
%{shared|pie:crtendS.o%s;:crtend.o%s} crtn.o%s"
/* We support #pragma. */
#define HANDLE_SYSV_PRAGMA 1

2
gcc/config/arm/linux-gas.h
View File

@ -31,7 +31,7 @@
#define DEFAULT_SIGNED_CHAR 0
#undef SUBTARGET_CPP_SPEC
#define SUBTARGET_CPP_SPEC "%{posix:-D_POSIX_SOURCE} %{fPIC:-D__PIC__ -D__pic__} %{fpic:-D__PIC__ -D__pic__}"
#define SUBTARGET_CPP_SPEC "%{posix:-D_POSIX_SOURCE} %{fPIC|fPIE:-D__PIC__ -D__pic__} %{fpic|fpie:-D__PIC__ -D__pic__}"
#undef SIZE_TYPE
#define SIZE_TYPE "unsigned int"

2
gcc/config/arm/netbsd-elf.h
View File

@ -59,7 +59,7 @@
#undef SUBTARGET_EXTRA_ASM_SPEC
#define SUBTARGET_EXTRA_ASM_SPEC \
"-matpcs %{fpic:-k} %{fPIC:-k}"
"-matpcs %{fpic|fpie:-k} %{fPIC|fPIE:-k}"
/* Default floating point model is soft-VFP.
FIXME: -mhard-float currently implies FPA. */

2
gcc/config/arm/semi.h
View File

@ -59,7 +59,7 @@
binutils can't. */
#ifndef ASM_SPEC
#define ASM_SPEC "\
%{fpic: -k} %{fPIC: -k} \
%{fpic|fpie: -k} %{fPIC|fPIE: -k} \
%{mbig-endian:-EB} \
%{mcpu=*:-mcpu=%*} \
%{march=*:-march=%*} \

2
gcc/config/cris/linux.h
View File

@ -60,7 +60,7 @@ Boston, MA 02111-1307, USA. */
#define CRIS_ASM_SUBTARGET_SPEC \
"--em=criself\
%{!fleading-underscore:--no-underscore}\
%{fPIC|fpic: --pic}"
%{fPIC|fpic|fPIE|fpie: --pic}"
/* Provide a legacy -mlinux option. */
#undef CRIS_SUBTARGET_SWITCHES

2
gcc/config/freebsd-spec.h
View File

@ -78,7 +78,7 @@ Boston, MA 02111-1307, USA. */
#define FBSD_CPP_SPEC " \
%(cpp_cpu) \
%{fPIC:-D__PIC__ -D__pic__} %{fpic:-D__PIC__ -D__pic__} \
%{fPIC|fpic|fPIE|fpie:-D__PIC__ -D__pic__} \
%{posix:-D_POSIX_SOURCE}"
/* Provide a STARTFILE_SPEC appropriate for FreeBSD. Here we add

2
gcc/config/frv/frv.h
View File

@ -86,7 +86,7 @@
%{mmedia} %{mno-media} \
%{mmuladd} %{mno-muladd} \
%{mpack} %{mno-pack} \
%{fpic: -mpic} %{fPIC: -mPIC} %{mlibrary-pic}}"
%{fpic|fpie: -mpic} %{fPIC|fPIE: -mPIC} %{mlibrary-pic}}"
/* Another C string constant used much like `LINK_SPEC'. The difference
between the two is that `STARTFILE_SPEC' is used at the very beginning of

2
gcc/config/i386/beos-elf.h
View File

@ -78,7 +78,7 @@ Boston, MA 02111-1307, USA. */
CC1_SPEC is used for both cc1 and cc1plus. */
#undef CC1_SPEC
#define CC1_SPEC "%{!no-fpic:%{!fPIC:-fpic}} %{!Wmultichar: -Wno-multichar} %(cc1_cpu) %{profile:-p}"
#define CC1_SPEC "%{!no-fpic:%{!fno-pic:%{!fno-pie:%{!fpie:%{!fPIC:%{!fPIE:-fpic}}}}}} %{!Wmultichar: -Wno-multichar} %(cc1_cpu) %{profile:-p}"
#undef CC1PLUS_SPEC
#define CC1PLUS_SPEC "%{!Wctor-dtor-privacy:-Wno-ctor-dtor-privacy}"

2
gcc/config/i386/freebsd-aout.h
View File

@ -210,7 +210,7 @@ do { \
} while (0)
#define AS_NEEDS_DASH_FOR_PIPED_INPUT
#define ASM_SPEC "%{fpic:-k} %{fPIC:-k}"
#define ASM_SPEC "%{fpic|fpie|fPIC|fPIE:-k}"
#define LINK_SPEC \
"%{p:%e`-p' not supported; use `-pg' and gprof(1)} \
%{shared:-Bshareable} \

11
gcc/config/i386/linux64.h
View File

@ -65,17 +65,6 @@ Boston, MA 02111-1307, USA. */
%{!m32:%{!dynamic-linker:-dynamic-linker /lib64/ld-linux-x86-64.so.2}}} \
%{static:-static}}"
#undef STARTFILE_SPEC
#define STARTFILE_SPEC \
"%{!shared: \
%{pg:gcrt1.o%s} %{!pg:%{p:gcrt1.o%s} \
%{!p:%{profile:gcrt1.o%s} %{!profile:crt1.o%s}}}} \
crti.o%s %{static:crtbeginT.o%s} \
%{!static:%{!shared:crtbegin.o%s} %{shared:crtbeginS.o%s}}"
#undef ENDFILE_SPEC
#define ENDFILE_SPEC "%{!shared:crtend.o%s} %{shared:crtendS.o%s} crtn.o%s"
#define MULTILIB_DEFAULTS { "m64" }
/* Do code reading to identify a signal frame, and set the frame

15
gcc/config/ia64/linux.h
View File

@ -21,18 +21,21 @@ do { \
/* Need to override linux.h STARTFILE_SPEC, since it has crtbeginT.o in. */
#undef STARTFILE_SPEC
#ifdef HAVE_LD_PIE
#define STARTFILE_SPEC \
"%{!shared: \
%{pg:gcrt1.o%s} %{!pg:%{p:gcrt1.o%s} \
%{!p:%{profile:gcrt1.o%s} \
%{!profile:crt1.o%s}}}} \
crti.o%s %{!shared:crtbegin.o%s} %{shared:crtbeginS.o%s}"
"%{!shared: %{pg|p|profile:gcrt1.o%s;pie:Scrt1.o%s;:crt1.o%s}}\
crti.o%s %{shared|pie:crtbeginS.o%s;:crtbegin.o%s}"
#else
#define STARTFILE_SPEC \
"%{!shared: %{pg|p|profile:gcrt1.o%s;:crt1.o%s}}\
crti.o%s %{shared|pie:crtbeginS.o%s;:crtbegin.o%s}"
#endif
/* Similar to standard Linux, but adding -ffast-math support. */
#undef ENDFILE_SPEC
#define ENDFILE_SPEC \
"%{ffast-math|funsafe-math-optimizations:crtfastmath.o%s} \
%{!shared:crtend.o%s} %{shared:crtendS.o%s} crtn.o%s"
%{shared|pie:crtendS.o%s;:crtend.o%s} crtn.o%s"
/* Define this for shared library support because it isn't in the main
linux.h file. */

14
gcc/config/linux.h
View File

@ -53,14 +53,14 @@ Boston, MA 02111-1307, USA. */
%{!p:%{profile:gcrt1.o%s} \
%{!profile:crt1.o%s}}}} \
crti.o%s %{!shared:crtbegin.o%s} %{shared:crtbeginS.o%s}"
#elif defined HAVE_LD_PIE
#define STARTFILE_SPEC \
"%{!shared: %{pg|p|profile:gcrt1.o%s;pie:Scrt1.o%s;:crt1.o%s}} \
crti.o%s %{static:crtbeginT.o%s;shared|pie:crtbeginS.o%s;:crtbegin.o%s}"
#else
#define STARTFILE_SPEC \
"%{!shared: \
%{pg:gcrt1.o%s} %{!pg:%{p:gcrt1.o%s} \
%{!p:%{profile:gcrt1.o%s} \
%{!profile:crt1.o%s}}}} \
crti.o%s %{static:crtbeginT.o%s}\
%{!static:%{!shared:crtbegin.o%s} %{shared:crtbeginS.o%s}}"
"%{!shared: %{pg|p|profile:gcrt1.o%s;:crt1.o%s}} \
crti.o%s %{static:crtbeginT.o%s;shared|pie:crtbeginS.o%s;:crtbegin.o%s}"
#endif
/* Provide a ENDFILE_SPEC appropriate for GNU/Linux. Here we tack on
@ -71,7 +71,7 @@ Boston, MA 02111-1307, USA. */
#undef ENDFILE_SPEC
#define ENDFILE_SPEC \
"%{!shared:crtend.o%s} %{shared:crtendS.o%s} crtn.o%s"
"%{shared|pie:crtendS.o%s;:crtend.o%s} crtn.o%s"
/* This is for -profile to use -lc_p instead of -lc. */
#ifndef CC1_SPEC

4
gcc/config/m68k/linux.h
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@ -121,10 +121,10 @@ Boston, MA 02111-1307, USA. */
#undef CPP_SPEC
#if TARGET_DEFAULT & MASK_68881
#define CPP_SPEC \
"%{fPIC:-D__PIC__ -D__pic__} %{fpic:-D__PIC__ -D__pic__} %{!msoft-float:-D__HAVE_68881__} %{posix:-D_POSIX_SOURCE} %{pthread:-D_REENTRANT}"
"%{fPIC|fpic|fPIE|fpie:-D__PIC__ -D__pic__} %{!msoft-float:-D__HAVE_68881__} %{posix:-D_POSIX_SOURCE} %{pthread:-D_REENTRANT}"
#else
#define CPP_SPEC \
"%{fPIC:-D__PIC__ -D__pic__} %{fpic:-D__PIC__ -D__pic__} %{m68881:-D__HAVE_68881__} %{posix:-D_POSIX_SOURCE} %{pthread:-D_REENTRANT}"
"%{fPIC|fpic|fPIE|fpie:-D__PIC__ -D__pic__} %{m68881:-D__HAVE_68881__} %{posix:-D_POSIX_SOURCE} %{pthread:-D_REENTRANT}"
#endif
/* We override the ASM_SPEC from svr4.h because we must pass -m68040 down

2
gcc/config/m68k/netbsd-elf.h
View File

@ -105,7 +105,7 @@ Boston, MA 02111-1307, USA. */
#define ASM_SPEC \
"%(asm_default_spec) \
%{m68010} %{m68020} %{m68030} %{m68040} %{m68060} \
%{fpic:-k} %{fPIC:-k -K}"
%{fpic|fpie:-k} %{fPIC|fPIE:-k -K}"
#define AS_NEEDS_DASH_FOR_PIPED_INPUT

2
gcc/config/m68k/netbsd.h
View File

@ -31,7 +31,7 @@
"%{!msoft-float:-D__HAVE_68881__ -D__HAVE_FPU__} %(netbsd_cpp_spec)"
#undef ASM_SPEC
#define ASM_SPEC "%{m68030} %{m68040} %{m68060} %{fpic:-k} %{fPIC:-k -K}"
#define ASM_SPEC "%{m68030} %{m68040} %{m68060} %{fpic|fpie:-k} %{fPIC|fPIE:-k -K}"
#define AS_NEEDS_DASH_FOR_PIPED_INPUT

2
gcc/config/m68k/openbsd.h
View File

@ -46,7 +46,7 @@ Boston, MA 02111-1307, USA. */
/* m68k as needs to know about the processor subtype. */
#undef ASM_SPEC
#define ASM_SPEC "%{m68030} %{m68040} %{m68060} %{fpic:-k} %{fPIC:-k -K}"
#define ASM_SPEC "%{m68030} %{m68040} %{m68060} %{fpic|fpie:-k} %{fPIC|fPIE:-k -K}"
#define AS_NEEDS_DASH_FOR_PIPED_INPUT

2
gcc/config/mips/linux.h
View File

@ -163,7 +163,7 @@ void FN () \
#undef SUBTARGET_CPP_SPEC
#define SUBTARGET_CPP_SPEC "\
%{fno-PIC:-U__PIC__ -U__pic__} %{fno-pic:-U__PIC__ -U__pic__} \
%{fPIC:-D__PIC__ -D__pic__} %{fpic:-D__PIC__ -D__pic__} \
%{fPIC|fPIE|fpic|fpie:-D__PIC__ -D__pic__} \
%{pthread:-D_REENTRANT}"
/* From iris5.h */

2
gcc/config/mips/openbsd.h
View File

@ -21,7 +21,7 @@ Boston, MA 02111-1307, USA. */
/* Definitions needed for OpenBSD, to avoid picking mips 'defaults'. */
/* GAS must know this. */
#define SUBTARGET_ASM_SPEC "%{fPIC:-KPIC}"
#define SUBTARGET_ASM_SPEC "%{fPIC|fPIE:-KPIC}"
#define AS_NEEDS_DASH_FOR_PIPED_INPUT

2
gcc/config/netbsd-aout.h
View File

@ -39,7 +39,7 @@ Boston, MA 02111-1307, USA. */
with the options for generating PIC code. */
#undef ASM_SPEC
#define ASM_SPEC "%{fpic:-k} %{fPIC:-k -K}"
#define ASM_SPEC "%{fpic|fpie:-k} %{fPIC|fPIE:-k -K}"
#define AS_NEEDS_DASH_FOR_PIPED_INPUT

2
gcc/config/openbsd.h
View File

@ -106,7 +106,7 @@ Boston, MA 02111-1307, USA. */
still uses a special flavor of gas that needs to be told when generating
pic code. */
#undef ASM_SPEC
#define ASM_SPEC "%{fpic:-k} %{fPIC:-k -K}"
#define ASM_SPEC "%{fpic|fpie:-k} %{fPIC|fPIE:-k -K}"
#endif
/* Since we use gas, stdin -> - is a good idea. */

2
gcc/config/pa/pa-linux.h
View File

@ -66,7 +66,7 @@ Boston, MA 02111-1307, USA. */
while (0)
#undef CPP_SPEC
#define CPP_SPEC "%{fPIC:-D__PIC__ -D__pic__} %{fpic:-D__PIC__ -D__pic__} %{posix:-D_POSIX_SOURCE}"
#define CPP_SPEC "%{fPIC|fpic|fPIE|fpie:-D__PIC__ -D__pic__} %{posix:-D_POSIX_SOURCE}"
#undef LIB_SPEC
#define LIB_SPEC \

13
gcc/config/rs6000/linux64.h
View File

@ -215,14 +215,19 @@
#endif
#undef STARTFILE_LINUX_SPEC
#ifdef HAVE_LD_PIE
#define STARTFILE_LINUX_SPEC "\
%{!shared: %{pg:gcrt1.o%s} %{!pg:%{p:gcrt1.o%s} %{!p:crt1.o%s}}} crti.o%s \
%{static:crtbeginT.o%s} \
%{!static:%{!shared:crtbegin.o%s} %{shared:crtbeginS.o%s}}"
%{!shared: %{pg|p:gcrt1.o%s;pie:Scrt1.o%s;:crt1.o%s}} crti.o%s \
%{static:crtbeginT.o%s;shared|pie:crtbeginS.o%s;:crtbegin.o%s}"
#else
#define STARTFILE_LINUX_SPEC "\
%{!shared: %{pg|p:gcrt1.o%s;:crt1.o%s}} crti.o%s \
%{static:crtbeginT.o%s;shared|pie:crtbeginS.o%s;:crtbegin.o%s}"
#endif
#undef ENDFILE_LINUX_SPEC
#define ENDFILE_LINUX_SPEC "\
%{!shared:crtend.o%s} %{shared:crtendS.o%s} crtn.o%s"
%{shared|pie:crtendS.o%s;:crtend.o%s} crtn.o%s"
#undef TOC_SECTION_ASM_OP
#define TOC_SECTION_ASM_OP "\t.section\t\".toc\",\"aw\""

18
gcc/config/rs6000/sysv4.h
View File

@ -810,7 +810,7 @@ extern int fixuplabelno;
#define ASM_SPEC "%(asm_cpu) \
%{.s: %{mregnames} %{mno-regnames}} %{.S: %{mregnames} %{mno-regnames}} \
%{v:-V} %{Qy:} %{!Qn:-Qy} %{n} %{T} %{Ym,*} %{Yd,*} %{Wa,*:%*} \
%{mrelocatable} %{mrelocatable-lib} %{fpic:-K PIC} %{fPIC:-K PIC} \
%{mrelocatable} %{mrelocatable-lib} %{fpic|fpie|fPIC|fPIE:-K PIC} \
%{memb|msdata|msdata=eabi: -memb} \
%{mlittle|mlittle-endian:-mlittle; \
mbig|mbig-endian :-mbig; \
@ -947,8 +947,8 @@ extern int fixuplabelno;
#define CPP_SYSV_SPEC \
"%{mrelocatable*: -D_RELOCATABLE} \
%{fpic: -D__PIC__=1 -D__pic__=1} \
%{!fpic: %{fPIC: -D__PIC__=2 -D__pic__=2}}"
%{fpic|fpie: -D__PIC__=1 -D__pic__=1} \
%{!fpic: %{fPIC|fPIE: -D__PIC__=2 -D__pic__=2}}"
/* Override rs6000.h definition. */
#undef CPP_SPEC
@ -1107,12 +1107,16 @@ extern int fixuplabelno;
%{!shared: %{pg:gcrt1.o%s} %{!pg:%{p:gcrt1.o%s} %{!p:crt1.o%s}}} \
%{mnewlib: ecrti.o%s} %{!mnewlib: crti.o%s} \
%{!shared:crtbegin.o%s} %{shared:crtbeginS.o%s}"
#elif defined HAVE_LD_PIE
#define STARTFILE_LINUX_SPEC "\
%{!shared: %{pg|p:gcrt1.o%s;pie:Scrt1.o%s;:crt1.o%s}} \
%{mnewlib:ecrti.o%s;:crti.o%s} \
%{static:crtbeginT.o%s;shared|pie:crtbeginS.o%s;:crtbegin.o%s}"
#else
#define STARTFILE_LINUX_SPEC "\
%{!shared: %{pg:gcrt1.o%s} %{!pg:%{p:gcrt1.o%s} %{!p:crt1.o%s}}} \
%{mnewlib: ecrti.o%s} %{!mnewlib: crti.o%s} \
%{static:crtbeginT.o%s} \
%{!static:%{!shared:crtbegin.o%s} %{shared:crtbeginS.o%s}}"
%{!shared: %{pg|p:gcrt1.o%s;:crt1.o%s}} \
%{mnewlib:ecrti.o%s;:crti.o%s} \
%{static:crtbeginT.o%s;shared|pie:crtbeginS.o%s;:crtbegin.o%s}"
#endif
#define ENDFILE_LINUX_SPEC "%{!shared:crtend.o%s} %{shared:crtendS.o%s} \

4
gcc/config/rs6000/vxworks.h
View File

@ -48,8 +48,8 @@
t860: -DCPU=PPC860 -D_SOFT_FLOAT ; \
: -DCPU=PPC604} \
%{!msoft-float:-D__hardfp} \
%{fpic: -D__PIC__=1 -D__pic__=1 ; \
fPIC: -D__PIC__=2 -D__pic__=2 } \
%{fpic|fpie: -D__PIC__=1 -D__pic__=1 ; \
fPIC|fPIE: -D__PIC__=2 -D__pic__=2 } \
%(cpp_cpu)"
#define CC1_SPEC \

2
gcc/config/sol2.h
View File

@ -81,7 +81,7 @@ Boston, MA 02111-1307, USA. */
#undef ASM_SPEC
#define ASM_SPEC "\
%{v:-V} %{Qy:} %{!Qn:-Qy} %{n} %{T} %{Ym,*} %{Wa,*:%*} -s \
%{fpic:-K PIC} %{fPIC:-K PIC} \
%{fpic|fpie|fPIC|fPIE:-K PIC} \
%(asm_cpu) \
"

20
gcc/config/sparc/linux.h
View File

@ -57,12 +57,14 @@ Boston, MA 02111-1307, USA. */
"%{!shared: \
%{pg:gcrt1.o%s} %{!pg:%{p:gcrt1.o%s} %{!p:crt1.o%s}}}\
crti.o%s %{!shared:crtbegin.o%s} %{shared:crtbeginS.o%s}"
#elif defined HAVE_LD_PIE
#define STARTFILE_SPEC \
"%{!shared: %{pg|p:gcrt1.o%s;pie:Scrt1.o%s;:crt1.o%s}}\
crti.o%s %{static:crtbeginT.o%s;shared|pie:crtbeginS.o%s;:crtbegin.o%s}"
#else
#define STARTFILE_SPEC \
"%{!shared: \
%{pg:gcrt1.o%s} %{!pg:%{p:gcrt1.o%s} %{!p:crt1.o%s}}}\
crti.o%s %{static:crtbeginT.o%s}\
%{!static:%{!shared:crtbegin.o%s} %{shared:crtbeginS.o%s}}"
"%{!shared: %{pg|p:gcrt1.o%s;:crt1.o%s}}\
crti.o%s %{static:crtbeginT.o%s;shared|pie:crtbeginS.o%s;:crtbegin.o%s}"
#endif
/* Provide a ENDFILE_SPEC appropriate for GNU/Linux. Here we tack on
@ -74,7 +76,7 @@ Boston, MA 02111-1307, USA. */
#undef ENDFILE_SPEC
#define ENDFILE_SPEC \
"%{ffast-math|funsafe-math-optimizations:crtfastmath.o%s} \
%{!shared:crtend.o%s} %{shared:crtendS.o%s} crtn.o%s"
%{shared|pie:crtendS.o%s;:crtend.o%s} crtn.o%s"
/* This is for -profile to use -lc_p instead of -lc. */
#undef CC1_SPEC
@ -112,11 +114,11 @@ Boston, MA 02111-1307, USA. */
#undef CPP_SUBTARGET_SPEC
#ifdef USE_GNULIBC_1
#define CPP_SUBTARGET_SPEC \
"%{fPIC:-D__PIC__ -D__pic__} %{fpic:-D__PIC__ -D__pic__} %{posix:-D_POSIX_SOURCE} \
"%{fPIC|fPIE|fpic|fpie:-D__PIC__ -D__pic__} %{posix:-D_POSIX_SOURCE} \
%{mlong-double-128:-D__LONG_DOUBLE_128__}"
#else
#define CPP_SUBTARGET_SPEC \
"%{fPIC:-D__PIC__ -D__pic__} %{fpic:-D__PIC__ -D__pic__} %{posix:-D_POSIX_SOURCE} \
"%{fPIC|fPIE|fpic|fpie:-D__PIC__ -D__pic__} %{posix:-D_POSIX_SOURCE} \
%{pthread:-D_REENTRANT} %{mlong-double-128:-D__LONG_DOUBLE_128__}"
#endif
@ -192,8 +194,8 @@ Boston, MA 02111-1307, USA. */
It's safe to pass -s always, even if -g is not used. */
#undef ASM_SPEC
#define ASM_SPEC \
"%{V} %{v:%{!V:-V}} %{!Qn:-Qy} %{n} %{T} %{Ym,*} %{Wa,*:%*} -s %{fpic:-K PIC} \
%{fPIC:-K PIC} %(asm_cpu) %(asm_relax)"
"%{V} %{v:%{!V:-V}} %{!Qn:-Qy} %{n} %{T} %{Ym,*} %{Wa,*:%*} -s \
%{fpic|fPIC|fpie|fPIE:-K PIC} %(asm_cpu) %(asm_relax)"
/* Same as sparc.h */
#undef DBX_REGISTER_NUMBER

18
gcc/config/sparc/linux64.h
View File

@ -66,10 +66,15 @@ Boston, MA 02111-1307, USA. */
#undef STARTFILE_SPEC
#ifdef HAVE_LD_PIE
#define STARTFILE_SPEC \
"%{!shared:%{pg:gcrt1.o%s} %{!pg:%{p:gcrt1.o%s} %{!p:crt1.o%s}}}\
crti.o%s %{static:crtbeginT.o%s}\
%{!static:%{!shared:crtbegin.o%s} %{shared:crtbeginS.o%s}}"
"%{!shared:%{pg|p:gcrt1.o%s;pie:Scrt1.o%s;:crt1.o%s}}\
crti.o%s %{static:crtbeginT.o%s;shared|pie:crtbeginS.o%s;:crtbeginS.o%s}"
#else
#define STARTFILE_SPEC \
"%{!shared:%{pg|p:gcrt1.o%s;:crt1.o%s}}\
crti.o%s %{static:crtbeginT.o%s;shared|pie:crtbeginS.o%s;:crtbeginS.o%s}"
#endif
/* Provide a ENDFILE_SPEC appropriate for GNU/Linux. Here we tack on
the GNU/Linux magical crtend.o file (see crtstuff.c) which
@ -80,7 +85,7 @@ Boston, MA 02111-1307, USA. */
#undef ENDFILE_SPEC
#define ENDFILE_SPEC \
"%{!shared:crtend.o%s} %{shared:crtendS.o%s} crtn.o%s\
"%{shared|pie:crtendS.o%s;:crtend.o%s} crtn.o%s\
%{ffast-math|funsafe-math-optimizations:crtfastmath.o%s}"
/* The GNU C++ standard library requires that these macros be defined. */
@ -124,8 +129,7 @@ Boston, MA 02111-1307, USA. */
#undef CPP_SUBTARGET_SPEC
#define CPP_SUBTARGET_SPEC "\
%{fPIC:-D__PIC__ -D__pic__} \
%{fpic:-D__PIC__ -D__pic__} \
%{fPIC|fpic|fPIE|fpie:-D__PIC__ -D__pic__} \
%{posix:-D_POSIX_SOURCE} \
%{pthread:-D_REENTRANT} \
"
@ -254,7 +258,7 @@ Boston, MA 02111-1307, USA. */
%{T} \
%{Ym,*} \
%{Wa,*:%*} \
-s %{fpic:-K PIC} %{fPIC:-K PIC} \
-s %{fpic|fPIC|fpie|fPIE:-K PIC} \
%{mlittle-endian:-EL} \
%(asm_cpu) %(asm_arch) %(asm_relax)"

2
gcc/config/sparc/netbsd-elf.h
View File

@ -86,7 +86,7 @@ Boston, MA 02111-1307, USA. */
#define USER_LABEL_PREFIX ""
#undef ASM_SPEC
#define ASM_SPEC "%{fpic:-K PIC} %{fPIC:-K PIC} %{V} %{v:%{!V:-V}} \
#define ASM_SPEC "%{fpic|fPIC|fpie|fPIE:-K PIC} %{V} %{v:%{!V:-V}} \
%{mlittle-endian:-EL} \
%(asm_cpu) %(asm_arch) %(asm_relax)"

2
gcc/config/sparc/openbsd64.h
View File

@ -53,7 +53,7 @@ Boston, MA 02111-1307, USA. */
#undef ASM_SPEC
#define ASM_SPEC "\
%{v:-V} -s %{fpic:-K PIC} %{fPIC:-K PIC} \
%{v:-V} -s %{fpic|fPIC|fpie|fPIE:-K PIC} \
%{mlittle-endian:-EL} \
%(asm_cpu) %(asm_arch) \
"

2
gcc/config/sparc/sp64-elf.h
View File

@ -56,7 +56,7 @@ Boston, MA 02111-1307, USA. */
#undef ASM_SPEC
#define ASM_SPEC "\
%{v:-V} -s %{fpic:-K PIC} %{fPIC:-K PIC} \
%{v:-V} -s %{fpic|fPIC|fpie|fPIE:-K PIC} \
%{mlittle-endian:-EL} \
%(asm_cpu) %(asm_arch) \
"

2
gcc/config/sparc/sparc.h
View File

@ -336,7 +336,7 @@ extern enum cmodel sparc_cmodel;
/* Special flags to the Sun-4 assembler when using pipe for input. */
#define ASM_SPEC "\
%{R} %{!pg:%{!p:%{fpic:-k} %{fPIC:-k}}} %{keep-local-as-symbols:-L} \
%{R} %{!pg:%{!p:%{fpic|fPIC|fpie|fPIE:-k}}} %{keep-local-as-symbols:-L} \
%(asm_cpu) %(asm_relax)"
#define AS_NEEDS_DASH_FOR_PIPED_INPUT

2
gcc/config/sparc/sysv4.h
View File

@ -59,7 +59,7 @@ Boston, MA 02111-1307, USA. */
#undef ASM_SPEC
#define ASM_SPEC \
"%{v:-V} %{Qy:} %{!Qn:-Qy} %{n} %{T} %{Ym,*} %{Yd,*} %{Wa,*:%*} \
%{fpic:-K PIC} %{fPIC:-K PIC} %(asm_cpu)"
%{fpic|fPIC|fpie|fPIE:-K PIC} %(asm_cpu)"
/* Define the names of various pseudo-op used by the SPARC/svr4 assembler.
Note that many of these are different from the typical pseudo-ops used

27
gcc/configure vendored
View File

@ -8838,11 +8838,32 @@ EOF
fi
echo "$ac_t""$gcc_cv_ld_eh_frame_hdr" 1>&6
echo $ac_n "checking linker position independent executable support""... $ac_c" 1>&6
echo "configure:8843: checking linker position independent executable support" >&5
gcc_cv_ld_pie=no
if test $in_tree_ld = yes ; then
if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 15 -o "$gcc_cv_gld_major_version" -gt 2 && grep 'EMUL = elf' ../ld/Makefile > /dev/null; then
gcc_cv_ld_pie=yes
fi
elif test x$gcc_cv_ld != x; then
# Check if linker supports -pie option
if $gcc_cv_ld --help 2>/dev/null | grep -- -pie > /dev/null; then
gcc_cv_ld_pie=yes
fi
fi
if test x"$gcc_cv_ld_pie" = xyes; then
cat >> confdefs.h <<\EOF
#define HAVE_LD_PIE 1
EOF
fi
echo "$ac_t""$gcc_cv_ld_pie" 1>&6
# Miscellaneous target-specific checks.
case "$target" in
mips*-*-*)
echo $ac_n "checking whether libgloss uses STARTUP directives consistently""... $ac_c" 1>&6
echo "configure:8846: checking whether libgloss uses STARTUP directives consistently" >&5
echo "configure:8867: checking whether libgloss uses STARTUP directives consistently" >&5
gcc_cv_mips_libgloss_startup=no
gcc_cv_libgloss_srcdir=`echo $srcdir | sed -e 's,/gcc$,,'`/libgloss
if test "x$exec_prefix" = xNONE; then
@ -8870,7 +8891,7 @@ EOF
echo "$ac_t""$gcc_cv_mips_libgloss_startup" 1>&6
echo $ac_n "checking whether the assembler has explicit relocation support""... $ac_c" 1>&6
echo "configure:8874: checking whether the assembler has explicit relocation support" >&5
echo "configure:8895: checking whether the assembler has explicit relocation support" >&5
if test x$gcc_cv_mips_explicit_relocs = x; then
gcc_cv_mips_explicit_relocs=no
if test x$gcc_cv_as != x; then
@ -9065,7 +9086,7 @@ fi
echo $ac_n "checking whether to enable maintainer-specific portions of Makefiles""... $ac_c" 1>&6
echo "configure:9069: checking whether to enable maintainer-specific portions of Makefiles" >&5
echo "configure:9090: checking whether to enable maintainer-specific portions of Makefiles" >&5
# Check whether --enable-maintainer-mode or --disable-maintainer-mode was given.
if test "${enable_maintainer_mode+set}" = set; then
enableval="$enable_maintainer_mode"

18
gcc/configure.in
View File

@ -2631,6 +2631,24 @@ if test x"$gcc_cv_ld_eh_frame_hdr" = xyes; then
fi
AC_MSG_RESULT($gcc_cv_ld_eh_frame_hdr)
AC_MSG_CHECKING(linker position independent executable support)
gcc_cv_ld_pie=no
if test $in_tree_ld = yes ; then
if test "$gcc_cv_gld_major_version" -eq 2 -a "$gcc_cv_gld_minor_version" -ge 15 -o "$gcc_cv_gld_major_version" -gt 2 && grep 'EMUL = elf' ../ld/Makefile > /dev/null; then
gcc_cv_ld_pie=yes
fi
elif test x$gcc_cv_ld != x; then
# Check if linker supports -pie option
if $gcc_cv_ld --help 2>/dev/null | grep -- -pie > /dev/null; then
gcc_cv_ld_pie=yes
fi
fi
if test x"$gcc_cv_ld_pie" = xyes; then
AC_DEFINE(HAVE_LD_PIE, 1,
[Define if your linker supports -pie option.])
fi
AC_MSG_RESULT($gcc_cv_ld_pie)
# Miscellaneous target-specific checks.
case "$target" in
mips*-*-*)

20
gcc/doc/invoke.texi
View File

@ -310,7 +310,7 @@ in the following sections.
@item Linker Options
@xref{Link Options,,Options for Linking}.
@gccoptlist{@var{object-file-name} -l@var{library} @gol
-nostartfiles -nodefaultlibs -nostdlib @gol
-nostartfiles -nodefaultlibs -nostdlib -pie @gol
-s -static -static-libgcc -shared -shared-libgcc -symbolic @gol
-Wl,@var{option} -Xlinker @var{option} @gol
-u @var{symbol}}
@ -672,7 +672,7 @@ in the following sections.
-fasynchronous-unwind-tables @gol
-finhibit-size-directive -finstrument-functions @gol
-fno-common -fno-ident -fno-gnu-linker @gol
-fpcc-struct-return -fpic -fPIC @gol
-fpcc-struct-return -fpic -fPIC -fpie -fPIE @gol
-freg-struct-return -fshared-data -fshort-enums @gol
-fshort-double -fshort-wchar @gol
-fverbose-asm -fpack-struct -fstack-check @gol
@ -4815,6 +4815,13 @@ library subroutines. (For example, @samp{__main}, used to ensure C++
constructors will be called; @pxref{Collect2,,@code{collect2}, gccint,
GNU Compiler Collection (GCC) Internals}.)
@item -pie
@opindex pie
Produce a position independent executable on targets which support it.
For predictable results, you must also specify the same set of options
that were used to generate code (@option{-fpie}, @option{-fPIE},
or model suboptions) when you specify this option.
@item -s
@opindex s
Remove all symbol table and relocation information from the executable.
@ -11040,6 +11047,15 @@ and the SPARC.
Position-independent code requires special support, and therefore works
only on certain machines.
@item -fpie
@itemx -fPIE
@opindex fpie
@opindex fPIE
These options are similar to @option{-fpic} and @option{-fPIC}, but
generated position independent code can be only linked into executables.
Usually these options are used when @option{-pie} GCC option will be
used during linking.
@item -ffixed-@var{reg}
@opindex ffixed
Treat the register named @var{reg} as a fixed register; generated code

10
gcc/flags.h
View File

@ -462,6 +462,16 @@ extern int flag_pedantic_errors;
extern int flag_pic;
/* Nonzero if we are compiling position independent code for executable.
1 vs 2 for a target-dependent "small" or "large" mode. */
extern int flag_pie;
/* Nonzero if we are compiling code for a shared library, zero for
executable. */
extern int flag_shlib;
/* Nonzero means generate extra code for exception handling and enable
exception handling. */

13
gcc/gcc.c
View File

@ -664,6 +664,14 @@ proper position among the other output files. */
#define LINK_GCC_C_SEQUENCE_SPEC "%G %L %G"
#endif
#ifndef LINK_PIE_SPEC
#ifdef HAVE_LD_PIE
#define LINK_PIE_SPEC "%{pie:-pie} "
#else
#define LINK_PIE_SPEC "%{pie:} "
#endif
#endif
/* -u* was put back because both BSD and SysV seem to support it. */
/* %{static:} simply prevents an error message if the target machine
doesn't handle -static. */
@ -673,8 +681,8 @@ proper position among the other output files. */
#ifndef LINK_COMMAND_SPEC
#define LINK_COMMAND_SPEC "\
%{!fsyntax-only:%{!c:%{!M:%{!MM:%{!E:%{!S:\
%(linker) %l %X %{o*} %{A} %{d} %{e*} %{m} %{N} %{n} %{r} %{s} %{t}\
%{u*} %{x} %{z} %{Z} %{!A:%{!nostdlib:%{!nostartfiles:%S}}}\
%(linker) %l " LINK_PIE_SPEC "%X %{o*} %{A} %{d} %{e*} %{m} %{N} %{n} %{r}\
%{s} %{t} %{u*} %{x} %{z} %{Z} %{!A:%{!nostdlib:%{!nostartfiles:%S}}}\
%{static:} %{L*} %(link_libgcc) %o %{fprofile-arcs:-lgcov}\
%{!nostdlib:%{!nodefaultlibs:%(link_gcc_c_sequence)}}\
%{!A:%{!nostdlib:%{!nostartfiles:%E}}} %{T*} }}}}}}"
@ -1021,6 +1029,7 @@ static const struct option_map option_map[] =
{"--param", "--param", "a"},
{"--pedantic", "-pedantic", 0},
{"--pedantic-errors", "-pedantic-errors", 0},
{"--pie", "-pie", 0},
{"--pipe", "-pipe", 0},
{"--prefix", "-B", "a"},
{"--preprocess", "-E", 0},

19
gcc/toplev.c
View File

@ -759,6 +759,17 @@ int flag_delayed_branch;
int flag_pic;
/* Nonzero if we are compiling position independent code for executable.
The value is 1 if we are doing "small" pic; value is 2 if we're doing
"large" pic. */
int flag_pie;
/* Nonzero if we are compiling code for a shared library, zero for
executable. */
int flag_shlib;
/* Set to the default thread-local storage (tls) model to use. */
enum tls_model flag_tls_default = TLS_MODEL_GLOBAL_DYNAMIC;
@ -1156,6 +1167,9 @@ static const lang_independent_options f_options[] =
{"pic", &flag_pic, 1,
N_("Generate position independent code, if possible") },
{"PIC", &flag_pic, 2, ""},
{"pie", &flag_pie, 1,
N_("Generate position independent code for executables, if possible") },
{"PIE", &flag_pie, 2, ""},
{"exceptions", &flag_exceptions, 1,
N_("Enable exception handling") },
{"unwind-tables", &flag_unwind_tables, 1,
@ -5338,6 +5352,11 @@ parse_options_and_default_flags (int argc, char **argv)
}
}
if (flag_pie)
flag_pic = flag_pie;
if (flag_pic && !flag_pie)
flag_shlib = 1;
if (flag_no_inline == 2)
flag_no_inline = 0;
else

2
gcc/varasm.c
View File

@ -5280,7 +5280,7 @@ bool
default_binds_local_p (exp)
tree exp;
{
return default_binds_local_p_1 (exp, flag_pic);
return default_binds_local_p_1 (exp, flag_shlib);
}
bool