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configure.in (HAVE_RO_EH_FRAME): Check whether .eh_frame section should be read-only.

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* configure.in (HAVE_RO_EH_FRAME): Check whether .eh_frame section
	should be read-only.
	* configure: Rebuilt.
	* fficonfig.h.in: Rebuilt.
	* include/ffi.h.in (EH_FRAME_FLAGS): Define.
	* src/alpha/osf.S: Use EH_FRAME_FLAGS.
	* src/powerpc/linux64.S: Likewise.
	* src/powerpc/linux64_closure.S: Likewise.  Include ffi.h.
	* src/powerpc/sysv.S: Use EH_FRAME_FLAGS.  Use pcrel encoding
	if -fpic/-fPIC/-mrelocatable.
	* src/powerpc/powerpc_closure.S: Likewise.
	* src/sparc/v8.S: If HAVE_RO_EH_FRAME is defined, don't include
	#write in .eh_frame flags.
	* src/sparc/v9.S: Likewise.
	* src/x86/unix64.S: Use EH_FRAME_FLAGS.
	* src/x86/sysv.S: Likewise.  Use pcrel encoding if -fpic/-fPIC.
	* src/s390/sysv.S: Use EH_FRAME_FLAGS.  Include ffi.h.

From-SVN: r66887
This commit is contained in:
Jakub Jelinek 2003-05-17 00:09:22 +02:00 committed by Jakub Jelinek
parent f5a1c99c63
commit a733b15e51
15 changed files with 198 additions and 63 deletions
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20
libffi/ChangeLog
View File

@ -1,3 +1,23 @@
2003-05-16 Jakub Jelinek <jakub@redhat.com>
* configure.in (HAVE_RO_EH_FRAME): Check whether .eh_frame section
should be read-only.
* configure: Rebuilt.
* fficonfig.h.in: Rebuilt.
* include/ffi.h.in (EH_FRAME_FLAGS): Define.
* src/alpha/osf.S: Use EH_FRAME_FLAGS.
* src/powerpc/linux64.S: Likewise.
* src/powerpc/linux64_closure.S: Likewise. Include ffi.h.
* src/powerpc/sysv.S: Use EH_FRAME_FLAGS. Use pcrel encoding
if -fpic/-fPIC/-mrelocatable.
* src/powerpc/powerpc_closure.S: Likewise.
* src/sparc/v8.S: If HAVE_RO_EH_FRAME is defined, don't include
#write in .eh_frame flags.
* src/sparc/v9.S: Likewise.
* src/x86/unix64.S: Use EH_FRAME_FLAGS.
* src/x86/sysv.S: Likewise. Use pcrel encoding if -fpic/-fPIC.
* src/s390/sysv.S: Use EH_FRAME_FLAGS. Include ffi.h.
2003-05-07 Jeff Sturm <jsturm@one-point.com>
Fixes PR bootstrap/10656

28
libffi/configure vendored
View File

@ -3638,6 +3638,34 @@ EOF
fi
fi
echo $ac_n "checking whether .eh_frame section should be read-only""... $ac_c" 1>&6
echo "configure:3495: checking whether .eh_frame section should be read-only" >&5
if eval "test \"`echo '$''{'libffi_cv_ro_eh_frame'+set}'`\" = set"; then
echo $ac_n "(cached) $ac_c" 1>&6
else
libffi_cv_ro_eh_frame=no
echo 'extern void foo (void); void bar (void) { foo (); foo (); }' > conftest.c
if $CC $CFLAGS -S -fpic -fexceptions -o conftest.s conftest.c > /dev/null 2>&1; then
if grep '.section.*eh_frame.*"a"' conftest.s > /dev/null; then
libffi_cv_ro_eh_frame=yes
elif grep '.section.*eh_frame.*#alloc' conftest.c \
| grep -v '#write' > /dev/null; then
libffi_cv_ro_eh_frame=yes
fi
fi
rm -f conftest.*
fi
echo "$ac_t""$libffi_cv_ro_eh_frame" 1>&6
if test "x$libffi_cv_ro_eh_frame" = xyes; then
cat >> confdefs.h <<\EOF
#define HAVE_RO_EH_FRAME 1
EOF
fi

19
libffi/configure.in
View File

@ -149,6 +149,25 @@ if test x$TARGET = xSPARC; then
fi
fi
AC_CACHE_CHECK([whether .eh_frame section should be read-only],
libffi_cv_ro_eh_frame, [
libffi_cv_ro_eh_frame=no
echo 'extern void foo (void); void bar (void) { foo (); foo (); }' > conftest.c
if $CC $CFLAGS -S -fpic -fexceptions -o conftest.s conftest.c > /dev/null 2>&1; then
if grep '.section.*eh_frame.*"a"' conftest.s > /dev/null; then
libffi_cv_ro_eh_frame=yes
elif grep '.section.*eh_frame.*#alloc' conftest.c \
| grep -v '#write' > /dev/null; then
libffi_cv_ro_eh_frame=yes
fi
fi
rm -f conftest.*
])
if test "x$libffi_cv_ro_eh_frame" = xyes; then
AC_DEFINE(HAVE_RO_EH_FRAME, 1,
[Define if .eh_frame sections should be read-only.])
fi
AC_SUBST(TARGET)
AC_SUBST(TARGETDIR)

2
libffi/fficonfig.h.in
View File

@ -77,3 +77,5 @@
/* Define if your assembler supports .register. */
#undef HAVE_AS_REGISTER_PSEUDO_OP
/* Define if .eh_frame sections should be read-only. */
#undef HAVE_RO_EH_FRAME

10
libffi/include/ffi.h.in
View File

@ -183,7 +183,15 @@ extern "C" {
#endif
#endif
#ifndef LIBFFI_ASM
#ifdef LIBFFI_ASM
#ifdef HAVE_RO_EH_FRAME
#define EH_FRAME_FLAGS "a"
#else
#define EH_FRAME_FLAGS "aw"
#endif
#else
/* ---- Generic type definitions ----------------------------------------- */

2
libffi/src/alpha/osf.S
View File

@ -292,7 +292,7 @@ $load_table:
#endif
#ifdef __ELF__
.section .eh_frame,"aw",@progbits
.section .eh_frame,EH_FRAME_FLAGS,@progbits
__FRAME_BEGIN__:
.4byte $LECIE1-$LSCIE1 # Length of Common Information Entry
$LSCIE1:

2
libffi/src/powerpc/linux64.S
View File

@ -141,7 +141,7 @@ ffi_call_LINUX64:
.byte 0,12,0,1,128,4,0,0
.size .ffi_call_LINUX64,.-.ffi_call_LINUX64
.section .eh_frame,"aw",@progbits
.section .eh_frame,EH_FRAME_FLAGS,@progbits
.Lframe1:
.4byte .LECIE1-.LSCIE1 # Length of Common Information Entry
.LSCIE1:

5
libffi/src/powerpc/linux64_closure.S
View File

@ -1,3 +1,6 @@
#define LIBFFI_ASM
#include <ffi.h>
.file "linux64_closure.S"
#ifdef __powerpc64__
@ -174,7 +177,7 @@ ffi_closure_LINUX64:
.byte 0,12,0,1,128,0,0,0
.size .ffi_closure_LINUX64,.-.ffi_closure_LINUX64
.section .eh_frame,"aw",@progbits
.section .eh_frame,EH_FRAME_FLAGS,@progbits
.Lframe1:
.4byte .LECIE1-.LSCIE1 # Length of Common Information Entry
.LSCIE1:

35
libffi/src/powerpc/ppc_closure.S
View File

@ -197,36 +197,51 @@ ENTRY(ffi_closure_SYSV)
blr
END(ffi_closure_SYSV)
.section ".eh_frame","aw"
__FRAME_BEGIN__:
.section ".eh_frame",EH_FRAME_FLAGS,@progbits
.Lframe1:
.4byte .LECIE1-.LSCIE1 # Length of Common Information Entry
.LSCIE1:
.4byte 0x0 # CIE Identifier Tag
.byte 0x1 # CIE Version
#if defined _RELOCATABLE || defined __PIC__
.ascii "zR\0" # CIE Augmentation
#else
.ascii "\0" # CIE Augmentation
.byte 0x1 # uleb128 0x1; CIE Code Alignment Factor
.byte 0x7c # sleb128 -4; CIE Data Alignment Factor
#endif
.uleb128 0x1 # CIE Code Alignment Factor
.sleb128 -4 # CIE Data Alignment Factor
.byte 0x41 # CIE RA Column
#if defined _RELOCATABLE || defined __PIC__
.uleb128 0x1 # Augmentation size
.byte 0x1b # FDE Encoding (pcrel sdata4)
#endif
.byte 0xc # DW_CFA_def_cfa
.byte 0x1 # uleb128 0x1
.byte 0x0 # uleb128 0x0
.uleb128 0x1
.uleb128 0x0
.align 2
.LECIE1:
.LSFDE1:
.4byte .LEFDE1-.LASFDE1 # FDE Length
.LASFDE1:
.4byte .LASFDE1-__FRAME_BEGIN__ # FDE CIE offset
.4byte .LASFDE1-.Lframe1 # FDE CIE offset
#if defined _RELOCATABLE || defined __PIC__
.4byte .LFB1-. # FDE initial location
#else
.4byte .LFB1 # FDE initial location
#endif
.4byte .LFE1-.LFB1 # FDE address range
#if defined _RELOCATABLE || defined __PIC__
.uleb128 0x0 # Augmentation size
#endif
.byte 0x4 # DW_CFA_advance_loc4
.4byte .LCFI0-.LFB1
.byte 0xe # DW_CFA_def_cfa_offset
.byte 144,1 # uleb128 144
.uleb128 144
.byte 0x4 # DW_CFA_advance_loc4
.4byte .LCFI1-.LCFI0
.byte 0x2f # DW_CFA_GNU_negative_offset_extended
.byte 0x41 # uleb128 0x41
.byte 0x1 # uleb128 0x1
.uleb128 0x41
.uleb128 0x1
.align 2
.LEFDE1:

47
libffi/src/powerpc/sysv.S
View File

@ -128,48 +128,63 @@ L(float_return_value):
.LFE1:
END(ffi_call_SYSV)
.section ".eh_frame","aw"
__FRAME_BEGIN__:
.section ".eh_frame",EH_FRAME_FLAGS,@progbits
.Lframe1:
.4byte .LECIE1-.LSCIE1 /* Length of Common Information Entry */
.LSCIE1:
.4byte 0x0 /* CIE Identifier Tag */
.byte 0x1 /* CIE Version */
.ascii "\0" /* CIE Augmentation */
.byte 0x1 /* uleb128 0x1; CIE Code Alignment Factor */
.byte 0x7c /* sleb128 -4; CIE Data Alignment Factor */
#if defined _RELOCATABLE || defined __PIC__
.ascii "zR\0" /* CIE Augmentation */
#else
.ascii "\0" /* CIE Augmentation */
#endif
.uleb128 0x1 /* CIE Code Alignment Factor */
.sleb128 -4 /* CIE Data Alignment Factor */
.byte 0x41 /* CIE RA Column */
#if defined _RELOCATABLE || defined __PIC__
.uleb128 0x1 /* Augmentation size */
.byte 0x1b /* FDE Encoding (pcrel sdata4) */
#endif
.byte 0xc /* DW_CFA_def_cfa */
.byte 0x1 /* uleb128 0x1 */
.byte 0x0 /* uleb128 0x0 */
.uleb128 0x1
.uleb128 0x0
.align 2
.LECIE1:
.LSFDE1:
.4byte .LEFDE1-.LASFDE1 /* FDE Length */
.LASFDE1:
.4byte .LASFDE1-__FRAME_BEGIN__ /* FDE CIE offset */
.4byte .LASFDE1-.Lframe1 /* FDE CIE offset */
#if defined _RELOCATABLE || defined __PIC__
.4byte .LFB1-. /* FDE initial location */
#else
.4byte .LFB1 /* FDE initial location */
#endif
.4byte .LFE1-.LFB1 /* FDE address range */
#if defined _RELOCATABLE || defined __PIC__
.uleb128 0x0 /* Augmentation size */
#endif
.byte 0x4 /* DW_CFA_advance_loc4 */
.4byte .LCFI0-.LFB1
.byte 0xd /* DW_CFA_def_cfa_register */
.byte 0x08 /* uleb128 0x08 */
.uleb128 0x08
.byte 0x4 /* DW_CFA_advance_loc4 */
.4byte .LCFI5-.LCFI0
.byte 0x2f /* DW_CFA_GNU_negative_offset_extended */
.byte 0x41 /* uleb128 0x41 */
.byte 0x1 /* uleb128 0x1 */
.uleb128 0x41
.uleb128 0x1
.byte 0x9f /* DW_CFA_offset, column 0x1f */
.byte 0x1 /* uleb128 0x1 */
.uleb128 0x1
.byte 0x9e /* DW_CFA_offset, column 0x1e */
.byte 0x2 /* uleb128 0x2 */
.uleb128 0x2
.byte 0x9d /* DW_CFA_offset, column 0x1d */
.byte 0x3 /* uleb128 0x3 */
.uleb128 0x3
.byte 0x9c /* DW_CFA_offset, column 0x1c */
.byte 0x4 /* uleb128 0x4 */
.uleb128 0x4
.byte 0x4 /* DW_CFA_advance_loc4 */
.4byte .LCFI6-.LCFI5
.byte 0xd /* DW_CFA_def_cfa_register */
.byte 0x1c /* uleb128 0x1c */
.uleb128 0x1c
.align 2
.LEFDE1:
#endif

7
libffi/src/s390/sysv.S
View File

@ -23,6 +23,9 @@
OTHER DEALINGS IN THE SOFTWARE.
----------------------------------------------------------------------- */
#define LIBFFI_ASM
#include <ffi.h>
#ifndef __s390x__
.text
@ -146,7 +149,7 @@ ffi_closure_SYSV:
.size ffi_closure_SYSV,.ffi_closure_SYSV_end-ffi_closure_SYSV
.section .eh_frame,"a",@progbits
.section .eh_frame,EH_FRAME_FLAGS,@progbits
.Lframe1:
.4byte .LECIE1-.LSCIE1 # Length of Common Information Entry
.LSCIE1:
@ -345,7 +348,7 @@ ffi_closure_SYSV:
.section .eh_frame,"a",@progbits
.section .eh_frame,EH_FRAME_FLAGS,@progbits
.Lframe1:
.4byte .LECIE1-.LSCIE1 # Length of Common Information Entry
.LSCIE1:

4
libffi/src/sparc/v8.S
View File

@ -172,7 +172,11 @@ done1:
#define uanword uaword
#endif
#ifdef HAVE_RO_EH_FRAME
.section ".eh_frame",#alloc
#else
.section ".eh_frame",#alloc,#write
#endif
.LLframe1:
.uaword .LLECIE1-.LLSCIE1 ! Length of Common Information Entry
.LLSCIE1:

4
libffi/src/sparc/v9.S
View File

@ -207,7 +207,11 @@ longdouble1:
.ffi_closure_v9_end:
.size ffi_closure_v9,.ffi_closure_v9_end-ffi_closure_v9
#ifdef HAVE_RO_EH_FRAME
.section ".eh_frame",#alloc
#else
.section ".eh_frame",#alloc,#write
#endif
.LLframe1:
.uaword .LLECIE1-.LLSCIE1 ! Length of Common Information Entry
.LLSCIE1:

74
libffi/src/x86/sysv.S
View File

@ -129,41 +129,55 @@ epilogue:
.ffi_call_SYSV_end:
.size ffi_call_SYSV,.ffi_call_SYSV_end-ffi_call_SYSV
.section .eh_frame,"aw",@progbits
__FRAME_BEGIN__:
.4byte .LLCIE1
.section .eh_frame,EH_FRAME_FLAGS,@progbits
.Lframe1:
.long .LECIE1-.LSCIE1 # Length of Common Information Entry
.LSCIE1:
.4byte 0x0
.byte 0x1
.byte 0x0
.byte 0x1
.byte 0x7c
.byte 0x8
.byte 0xc
.byte 0x4
.byte 0x4
.byte 0x88
.byte 0x1
.long 0x0 # CIE Identifier Tag
.byte 0x1 # CIE Version
#ifdef __PIC__
.ascii "zR\0" # CIE Augmentation
#else
.ascii "\0" # CIE Augmentation
#endif
.uleb128 0x1 # CIE Code Alignment Factor
.sleb128 -4 # CIE Data Alignment Factor
.byte 0x8 # CIE RA Column
#ifdef __PIC__
.uleb128 0x1 # Augmentation size
.byte 0x1b # FDE Encoding (pcrel sdata4)
#endif
.byte 0xc # DW_CFA_def_cfa
.uleb128 0x4
.uleb128 0x4
.byte 0x88 # DW_CFA_offset, column 0x8
.uleb128 0x1
.align 4
.LECIE1:
.set .LLCIE1,.LECIE1-.LSCIE1
.4byte .LLFDE1
.LSFDE1:
.4byte .LSFDE1-__FRAME_BEGIN__
.4byte .LFB1
.4byte .LFE1-.LFB1
.byte 0x4
.4byte .LCFI0-.LFB1
.byte 0xe
.byte 0x8
.byte 0x85
.byte 0x2
.byte 0x4
.4byte .LCFI1-.LCFI0
.byte 0xd
.byte 0x5
.long .LEFDE1-.LASFDE1 # FDE Length
.LASFDE1:
.long .LASFDE1-.Lframe1 # FDE CIE offset
#ifdef __PIC__
.long .LFB1-. # FDE initial location
#else
.long .LFB1 # FDE initial location
#endif
.long .LFE1-.LFB1 # FDE address range
#ifdef __PIC__
.uleb128 0x0 # Augmentation size
#endif
.byte 0x4 # DW_CFA_advance_loc4
.long .LCFI0-.LFB1
.byte 0xe # DW_CFA_def_cfa_offset
.uleb128 0x8
.byte 0x85 # DW_CFA_offset, column 0x5
.uleb128 0x2
.byte 0x4 # DW_CFA_advance_loc4
.long .LCFI1-.LCFI0
.byte 0xd # DW_CFA_def_cfa_register
.uleb128 0x5
.align 4
.LEFDE1:
.set .LLFDE1,.LEFDE1-.LSFDE1
#endif /* ifndef __x86_64__ */

2
libffi/src/x86/unix64.S
View File

@ -237,7 +237,7 @@ ffi_closure_UNIX64:
ret
.LFE2:
.section .eh_frame,"a",@progbits
.section .eh_frame,EH_FRAME_FLAGS,@progbits
.Lframe0:
.long .LECIE1-.LSCIE1
.LSCIE1: