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-rw-r--r--sysdeps/s390/s390-64/configure170
-rw-r--r--sysdeps/s390/s390-64/configure.ac101
2 files changed, 40 insertions, 231 deletions
diff --git a/sysdeps/s390/s390-64/configure b/sysdeps/s390/s390-64/configure
index 824ae9c129..c8e25b242f 100644
--- a/sysdeps/s390/s390-64/configure
+++ b/sysdeps/s390/s390-64/configure
@@ -1,100 +1,6 @@
# This file is generated from configure.ac by Autoconf. DO NOT EDIT!
# Local configure fragment for sysdeps/s390/s390-64.
-# Bypass result of runtime configure check for known linker versions as
-# e.g. crt-files or libc.so might not be available in bootstrapping
-# environments.
-case $($LD --version) in
- "GNU gold"*)
- # As of 2023-08-07, gold does not support static PIE due to
- # Bug 22221 - add --no-dynamic-linker option
- # https://sourceware.org/bugzilla/show_bug.cgi?id=22221
- libc_cv_s390x_staticpie_req_version=no
- ;;
- "LLD"*)
- # As of 2023-08-07, there is no lld which supports s390x.
- libc_cv_s390x_staticpie_req_version=no
- ;;
- *)
- # The required binutils patches are available with bintuils 2.39
- libc_cv_s390x_staticpie_req_version=yes
- # Skip AC_CHECK_PROGS and just use the result from main configure.ac.
- libc_cv_s390x_staticpie_req_LD=$LD
- for ac_prog in $LD
-do
- # Extract the first word of "$ac_prog", so it can be a program name with args.
-set dummy $ac_prog; ac_word=$2
-{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking for $ac_word" >&5
-printf %s "checking for $ac_word... " >&6; }
-if test ${ac_cv_prog_libc_cv_s390x_staticpie_req_LD+y}
-then :
- printf %s "(cached) " >&6
-else $as_nop
- if test -n "$libc_cv_s390x_staticpie_req_LD"; then
- ac_cv_prog_libc_cv_s390x_staticpie_req_LD="$libc_cv_s390x_staticpie_req_LD" # Let the user override the test.
-else
-as_save_IFS=$IFS; IFS=$PATH_SEPARATOR
-for as_dir in $PATH
-do
- IFS=$as_save_IFS
- case $as_dir in #(((
- '') as_dir=./ ;;
- */) ;;
- *) as_dir=$as_dir/ ;;
- esac
- for ac_exec_ext in '' $ac_executable_extensions; do
- if as_fn_executable_p "$as_dir$ac_word$ac_exec_ext"; then
- ac_cv_prog_libc_cv_s390x_staticpie_req_LD="$ac_prog"
- printf "%s\n" "$as_me:${as_lineno-$LINENO}: found $as_dir$ac_word$ac_exec_ext" >&5
- break 2
- fi
-done
- done
-IFS=$as_save_IFS
-
-fi
-fi
-libc_cv_s390x_staticpie_req_LD=$ac_cv_prog_libc_cv_s390x_staticpie_req_LD
-if test -n "$libc_cv_s390x_staticpie_req_LD"; then
- { printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $libc_cv_s390x_staticpie_req_LD" >&5
-printf "%s\n" "$libc_cv_s390x_staticpie_req_LD" >&6; }
-else
- { printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: no" >&5
-printf "%s\n" "no" >&6; }
-fi
-
-
- test -n "$libc_cv_s390x_staticpie_req_LD" && break
-done
-
-if test -z "$libc_cv_s390x_staticpie_req_LD"; then
- ac_verc_fail=yes
-else
- # Found it, now check the version.
- { printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking version of $libc_cv_s390x_staticpie_req_LD" >&5
-printf %s "checking version of $libc_cv_s390x_staticpie_req_LD... " >&6; }
- ac_prog_version=`$libc_cv_s390x_staticpie_req_LD --version 2>&1 | sed -n 's/^.*GNU ld.* \([0-9][0-9]*\.[0-9.]*\).*$/\1/p'`
- case $ac_prog_version in
- '') ac_prog_version="v. ?.??, bad"; ac_verc_fail=yes;;
- 2.1[0-9][0-9]*|2.39*|2.[4-9][0-9]*|[3-9].*|[1-9][0-9]*)
- ac_prog_version="$ac_prog_version, ok"; ac_verc_fail=no;;
- *) ac_prog_version="$ac_prog_version, bad"; ac_verc_fail=yes;;
-
- esac
- { printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $ac_prog_version" >&5
-printf "%s\n" "$ac_prog_version" >&6; }
-fi
-if test $ac_verc_fail = yes; then
- libc_cv_s390x_staticpie_req_version=no
-fi
-
- ;;
-esac
-{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking for s390-specific static PIE requirements (version check)" >&5
-printf %s "checking for s390-specific static PIE requirements (version check)... " >&6; }
-{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $libc_cv_s390x_staticpie_req_version" >&5
-printf "%s\n" "$libc_cv_s390x_staticpie_req_version" >&6; }
-
# Minimal checking for static PIE support in ld.
# Compare to ld testcase/bugzilla:
# <binutils-source>/ld/testsuite/ld-elf/pr22263-1.rd
@@ -113,20 +19,31 @@ bar (void)
{
*foo = 1;
}
+
+void bar2 (void);
+void* bar2_ifunc (void) __asm__ ("bar2");
+__asm__ (".type bar2, %gnu_indirect_function");
+void* bar2_ifunc (void) { return 0; }
EOF
cat > conftest2.c <<EOF
extern __thread int *foo;
extern void bar (void);
+extern void bar2 (void);
static int x;
int
main ()
{
foo = &x;
+ bar2 ();
return 0;
}
EOF
libc_cv_s390x_staticpie_req_runtime=no
+ # Check if the static linker does not generate dynamic TLS relocs in PIE
+ # (binutils PR ld/22263), if it accepts --no-dynamic-linker
+ # (by using -static-pie), and if it adds a DT_JMPREL pointing to .rela.iplt
+ # with static pie.
if { ac_try='${CC-cc} $CFLAGS $CPPFLAGS $LDFLAGS -fPIE -c conftest1.c -o conftest1.o'
{ { eval echo "\"\$as_me\":${as_lineno-$LINENO}: \"$ac_try\""; } >&5
(eval $ac_try) 2>&5
@@ -139,7 +56,7 @@ EOF
ac_status=$?
printf "%s\n" "$as_me:${as_lineno-$LINENO}: \$? = $ac_status" >&5
test $ac_status = 0; }; } \
- && { ac_try='${CC-cc} $CFLAGS $CPPFLAGS $LDFLAGS -pie -o conftest conftest1.o conftest2.o'
+ && { ac_try='${CC-cc} $CFLAGS $CPPFLAGS $LDFLAGS -static-pie -nostartfiles -nostdlib -fPIE -o conftest conftest1.o conftest2.o'
{ { eval echo "\"\$as_me\":${as_lineno-$LINENO}: \"$ac_try\""; } >&5
(eval $ac_try) 2>&5
ac_status=$?
@@ -150,6 +67,12 @@ EOF
(eval $ac_try) 2>&5
ac_status=$?
printf "%s\n" "$as_me:${as_lineno-$LINENO}: \$? = $ac_status" >&5
+ test $ac_status = 0; }; } \
+ && { ac_try='LC_ACLL=C $READELF -d conftest | grep JMPREL'
+ { { eval echo "\"\$as_me\":${as_lineno-$LINENO}: \"$ac_try\""; } >&5
+ (eval $ac_try) 2>&5
+ ac_status=$?
+ printf "%s\n" "$as_me:${as_lineno-$LINENO}: \$? = $ac_status" >&5
test $ac_status = 0; }; }
then
libc_cv_s390x_staticpie_req_runtime=yes
@@ -161,59 +84,10 @@ libc_cv_s390x_staticpie_req_runtime
{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $ac_res" >&5
printf "%s\n" "$ac_res" >&6; }
-if test $libc_cv_s390x_staticpie_req_runtime = yes \
- || test $libc_cv_s390x_staticpie_req_version = yes; then
- # Static PIE is supported only on 64bit.
- # Ensure you also have those patches for:
- # - binutils (ld)
- # - "[PR ld/22263] s390: Avoid dynamic TLS relocs in PIE"
- # https://sourceware.org/git/?p=binutils-gdb.git;a=commit;h=26b1426577b5dcb32d149c64cca3e603b81948a9
- # (Tested by configure check above)
- # Otherwise there will be a R_390_TLS_TPOFF relocation, which fails to
- # be processed in _dl_relocate_static_pie() as static TLS map is not setup.
- # - "s390: Add DT_JMPREL pointing to .rela.[i]plt with static-pie"
- # https://sourceware.org/git/?p=binutils-gdb.git;a=commit;h=d942d8db12adf4c9e5c7d9ed6496a779ece7149e
- # (We can't test it in configure as we are not able to link a static PIE
- # executable if the system glibc lacks static PIE support)
- # Otherwise there won't be DT_JMPREL, DT_PLTRELA, DT_PLTRELASZ entries
- # and the IFUNC symbols are not processed, which leads to crashes.
- #
- # - kernel (the mentioned links to the commits belong to 5.19 merge window):
- # - "s390/mmap: increase stack/mmap gap to 128MB"
- # https://git.kernel.org/pub/scm/linux/kernel/git/s390/linux.git/commit/?h=features&id=f2f47d0ef72c30622e62471903ea19446ea79ee2
- # - "s390/vdso: move vdso mapping to its own function"
- # https://git.kernel.org/pub/scm/linux/kernel/git/s390/linux.git/commit/?h=features&id=57761da4dc5cd60bed2c81ba0edb7495c3c740b8
- # - "s390/vdso: map vdso above stack"
- # https://git.kernel.org/pub/scm/linux/kernel/git/s390/linux.git/commit/?h=features&id=9e37a2e8546f9e48ea76c839116fa5174d14e033
- # - "s390/vdso: add vdso randomization"
- # https://git.kernel.org/pub/scm/linux/kernel/git/s390/linux.git/commit/?h=features&id=41cd81abafdc4e58a93fcb677712a76885e3ca25
- # (We can't test the kernel of the target system)
- # Otherwise if /proc/sys/kernel/randomize_va_space is turned off (0),
- # static PIE executables like ldconfig will crash. While startup sbrk is
- # used to enlarge the HEAP. Unfortunately the underlying brk syscall fails
- # as there is not enough space after the HEAP. Then the address of the TLS
- # image is invalid and the following memcpy in __libc_setup_tls() leads
- # to a segfault.
- # If /proc/sys/kernel/randomize_va_space is activated (default: 2), there
- # is enough space after HEAP.
- #
- # - glibc
- # - "Linux: Define MMAP_CALL_INTERNAL"
- # https://sourceware.org/git/?p=glibc.git;a=commit;h=c1b68685d438373efe64e5f076f4215723004dfb
- # - "i386: Remove OPTIMIZE_FOR_GCC_5 from Linux libc-do-syscall.S"
- # https://sourceware.org/git/?p=glibc.git;a=commit;h=6e5c7a1e262961adb52443ab91bd2c9b72316402
- # - "i386: Honor I386_USE_SYSENTER for 6-argument Linux system calls"
- # https://sourceware.org/git/?p=glibc.git;a=commit;h=60f0f2130d30cfd008ca39743027f1e200592dff
- # - "ia64: Always define IA64_USE_NEW_STUB as a flag macro"
- # https://sourceware.org/git/?p=glibc.git;a=commit;h=18bd9c3d3b1b6a9182698c85354578d1d58e9d64
- # - "Linux: Implement a useful version of _startup_fatal"
- # https://sourceware.org/git/?p=glibc.git;a=commit;h=a2a6bce7d7e52c1c34369a7da62c501cc350bc31
- # - "Linux: Introduce __brk_call for invoking the brk system call"
- # https://sourceware.org/git/?p=glibc.git;a=commit;h=b57ab258c1140bc45464b4b9908713e3e0ee35aa
- # - "csu: Implement and use _dl_early_allocate during static startup"
- # https://sourceware.org/git/?p=glibc.git;a=commit;h=f787e138aa0bf677bf74fa2a08595c446292f3d7
- # The mentioned patch series by Florian Weimer avoids the mentioned failing
- # sbrk syscall by falling back to mmap.
+if test $libc_cv_s390x_staticpie_req_runtime = yes; then
+ # Some kernels might fail with /proc/sys/kernel/randomize_va_space set to 0
+ # due not enough space for a brk call. However, there is no reliable way to
+ # test it.
printf "%s\n" "#define SUPPORT_STATIC_PIE 1" >>confdefs.h
fi
diff --git a/sysdeps/s390/s390-64/configure.ac b/sysdeps/s390/s390-64/configure.ac
index 4657de0d37..fd729e1496 100644
--- a/sysdeps/s390/s390-64/configure.ac
+++ b/sysdeps/s390/s390-64/configure.ac
@@ -1,34 +1,6 @@
GLIBC_PROVIDES dnl See aclocal.m4 in the top level source directory.
# Local configure fragment for sysdeps/s390/s390-64.
-# Bypass result of runtime configure check for known linker versions as
-# e.g. crt-files or libc.so might not be available in bootstrapping
-# environments.
-case $($LD --version) in
- "GNU gold"*)
- # As of 2023-08-07, gold does not support static PIE due to
- # Bug 22221 - add --no-dynamic-linker option
- # https://sourceware.org/bugzilla/show_bug.cgi?id=22221
- libc_cv_s390x_staticpie_req_version=no
- ;;
- "LLD"*)
- # As of 2023-08-07, there is no lld which supports s390x.
- libc_cv_s390x_staticpie_req_version=no
- ;;
- *)
- # The required binutils patches are available with bintuils 2.39
- libc_cv_s390x_staticpie_req_version=yes
- # Skip AC_CHECK_PROGS and just use the result from main configure.ac.
- libc_cv_s390x_staticpie_req_LD=$LD
- AC_CHECK_PROG_VER(libc_cv_s390x_staticpie_req_LD, $LD, --version,
- [GNU ld.* \([0-9][0-9]*\.[0-9.]*\)],
- [2.1[0-9][0-9]*|2.39*|2.[4-9][0-9]*|[3-9].*|[1-9][0-9]*],
- libc_cv_s390x_staticpie_req_version=no)
- ;;
-esac
-AC_MSG_CHECKING([for s390-specific static PIE requirements (version check)])
-AC_MSG_RESULT($libc_cv_s390x_staticpie_req_version)
-
# Minimal checking for static PIE support in ld.
# Compare to ld testcase/bugzilla:
# <binutils-source>/ld/testsuite/ld-elf/pr22263-1.rd
@@ -42,81 +14,44 @@ bar (void)
{
*foo = 1;
}
+
+void bar2 (void);
+void* bar2_ifunc (void) __asm__ ("bar2");
+__asm__ (".type bar2, %gnu_indirect_function");
+void* bar2_ifunc (void) { return 0; }
EOF
cat > conftest2.c <<EOF
extern __thread int *foo;
extern void bar (void);
+extern void bar2 (void);
static int x;
int
main ()
{
foo = &x;
+ bar2 ();
return 0;
}
EOF
libc_cv_s390x_staticpie_req_runtime=no
+ # Check if the static linker does not generate dynamic TLS relocs in PIE
+ # (binutils PR ld/22263), if it accepts --no-dynamic-linker
+ # (by using -static-pie), and if it adds a DT_JMPREL pointing to .rela.iplt
+ # with static pie.
if AC_TRY_COMMAND([${CC-cc} $CFLAGS $CPPFLAGS $LDFLAGS -fPIE -c conftest1.c -o conftest1.o]) \
&& AC_TRY_COMMAND([${CC-cc} $CFLAGS $CPPFLAGS $LDFLAGS -fPIE -c conftest2.c -o conftest2.o]) \
- && AC_TRY_COMMAND([${CC-cc} $CFLAGS $CPPFLAGS $LDFLAGS -pie -o conftest conftest1.o conftest2.o]) \
- && AC_TRY_COMMAND([! LC_ALL=C $READELF -Wr conftest | grep R_390_TLS_TPOFF])
+ && AC_TRY_COMMAND([${CC-cc} $CFLAGS $CPPFLAGS $LDFLAGS -static-pie -nostartfiles -nostdlib -fPIE -o conftest conftest1.o conftest2.o]) \
+ && AC_TRY_COMMAND([! LC_ALL=C $READELF -Wr conftest | grep R_390_TLS_TPOFF]) \
+ && AC_TRY_COMMAND([LC_ACLL=C $READELF -d conftest | grep JMPREL])
then
libc_cv_s390x_staticpie_req_runtime=yes
fi
rm -rf conftest.*])
-if test $libc_cv_s390x_staticpie_req_runtime = yes \
- || test $libc_cv_s390x_staticpie_req_version = yes; then
- # Static PIE is supported only on 64bit.
- # Ensure you also have those patches for:
- # - binutils (ld)
- # - "[PR ld/22263] s390: Avoid dynamic TLS relocs in PIE"
- # https://sourceware.org/git/?p=binutils-gdb.git;a=commit;h=26b1426577b5dcb32d149c64cca3e603b81948a9
- # (Tested by configure check above)
- # Otherwise there will be a R_390_TLS_TPOFF relocation, which fails to
- # be processed in _dl_relocate_static_pie() as static TLS map is not setup.
- # - "s390: Add DT_JMPREL pointing to .rela.[i]plt with static-pie"
- # https://sourceware.org/git/?p=binutils-gdb.git;a=commit;h=d942d8db12adf4c9e5c7d9ed6496a779ece7149e
- # (We can't test it in configure as we are not able to link a static PIE
- # executable if the system glibc lacks static PIE support)
- # Otherwise there won't be DT_JMPREL, DT_PLTRELA, DT_PLTRELASZ entries
- # and the IFUNC symbols are not processed, which leads to crashes.
- #
- # - kernel (the mentioned links to the commits belong to 5.19 merge window):
- # - "s390/mmap: increase stack/mmap gap to 128MB"
- # https://git.kernel.org/pub/scm/linux/kernel/git/s390/linux.git/commit/?h=features&id=f2f47d0ef72c30622e62471903ea19446ea79ee2
- # - "s390/vdso: move vdso mapping to its own function"
- # https://git.kernel.org/pub/scm/linux/kernel/git/s390/linux.git/commit/?h=features&id=57761da4dc5cd60bed2c81ba0edb7495c3c740b8
- # - "s390/vdso: map vdso above stack"
- # https://git.kernel.org/pub/scm/linux/kernel/git/s390/linux.git/commit/?h=features&id=9e37a2e8546f9e48ea76c839116fa5174d14e033
- # - "s390/vdso: add vdso randomization"
- # https://git.kernel.org/pub/scm/linux/kernel/git/s390/linux.git/commit/?h=features&id=41cd81abafdc4e58a93fcb677712a76885e3ca25
- # (We can't test the kernel of the target system)
- # Otherwise if /proc/sys/kernel/randomize_va_space is turned off (0),
- # static PIE executables like ldconfig will crash. While startup sbrk is
- # used to enlarge the HEAP. Unfortunately the underlying brk syscall fails
- # as there is not enough space after the HEAP. Then the address of the TLS
- # image is invalid and the following memcpy in __libc_setup_tls() leads
- # to a segfault.
- # If /proc/sys/kernel/randomize_va_space is activated (default: 2), there
- # is enough space after HEAP.
- #
- # - glibc
- # - "Linux: Define MMAP_CALL_INTERNAL"
- # https://sourceware.org/git/?p=glibc.git;a=commit;h=c1b68685d438373efe64e5f076f4215723004dfb
- # - "i386: Remove OPTIMIZE_FOR_GCC_5 from Linux libc-do-syscall.S"
- # https://sourceware.org/git/?p=glibc.git;a=commit;h=6e5c7a1e262961adb52443ab91bd2c9b72316402
- # - "i386: Honor I386_USE_SYSENTER for 6-argument Linux system calls"
- # https://sourceware.org/git/?p=glibc.git;a=commit;h=60f0f2130d30cfd008ca39743027f1e200592dff
- # - "ia64: Always define IA64_USE_NEW_STUB as a flag macro"
- # https://sourceware.org/git/?p=glibc.git;a=commit;h=18bd9c3d3b1b6a9182698c85354578d1d58e9d64
- # - "Linux: Implement a useful version of _startup_fatal"
- # https://sourceware.org/git/?p=glibc.git;a=commit;h=a2a6bce7d7e52c1c34369a7da62c501cc350bc31
- # - "Linux: Introduce __brk_call for invoking the brk system call"
- # https://sourceware.org/git/?p=glibc.git;a=commit;h=b57ab258c1140bc45464b4b9908713e3e0ee35aa
- # - "csu: Implement and use _dl_early_allocate during static startup"
- # https://sourceware.org/git/?p=glibc.git;a=commit;h=f787e138aa0bf677bf74fa2a08595c446292f3d7
- # The mentioned patch series by Florian Weimer avoids the mentioned failing
- # sbrk syscall by falling back to mmap.
+if test $libc_cv_s390x_staticpie_req_runtime = yes; then
+ # Some kernels might fail with /proc/sys/kernel/randomize_va_space set to 0
+ # due not enough space for a brk call. However, there is no reliable way to
+ # test it.
AC_DEFINE(SUPPORT_STATIC_PIE)
fi
generated by cgit v1.2.3 (git 2.25.1) at 2024-12-30 21:02:20 +0000