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

* 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
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

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: