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| author | Andreas Jaeger <aj@suse.de> | 2012-03-19 21:00:15 +0100 |
|---|---|---|
| committer | Andreas Jaeger <aj@suse.de> | 2012-03-19 21:02:40 +0100 |
| commit | 735095ae9566b2b14e8210e5ed44b3d5b51495f1 (patch) | |
| tree | 2ef0d289cd9e056fdd421c174269496c329415d6 /sysdeps/i386/configure.in | |
| parent | 1221efbda91179b78dfb469ab03be063daaf8cd0 (diff) | |
| download | glibc-735095ae9566b2b14e8210e5ed44b3d5b51495f1.zip glibc-735095ae9566b2b14e8210e5ed44b3d5b51495f1.tar.gz glibc-735095ae9566b2b14e8210e5ed44b3d5b51495f1.tar.bz2 | |
Merge sysdeps/i386/elf/Versions into sysdeps/i386/Versions.
Move sysdeps/i386/elf/start.S to sysdeps/i386/
Merge sysdeps/i386/elf/configure.in into sysdeps/i386/configure.in
Delete merged files sysdeps/i386/elf/configure.in, sysdeps/i386/elf/Versions
and sysdeps/i386/elf/configure.
Diffstat (limited to 'sysdeps/i386/configure.in')
| -rw-r--r-- | sysdeps/i386/configure.in | 34 |
1 files changed, 34 insertions, 0 deletions
diff --git a/sysdeps/i386/configure.in b/sysdeps/i386/configure.in index f769019..ec69080 100644 --- a/sysdeps/i386/configure.in +++ b/sysdeps/i386/configure.in @@ -97,3 +97,37 @@ if AC_TRY_COMMAND([${CC-cc} -mno-vzeroupper -xc /dev/null -S -o /dev/null]); the else libc_cv_cc_novzeroupper=no fi]) + +# Check for support of thread-local storage handling in assembler and +# linker. +AC_CACHE_CHECK(for i386 TLS support, libc_cv_386_tls, [dnl +cat > conftest.s <<\EOF + .section ".tdata", "awT", @progbits + .globl foo +foo: .long 1 + .section ".tbss", "awT", @nobits + .globl bar +bar: .skip 4 + .text +baz: leal bar@TLSLDM(%ebx), %eax + leal bar@DTPOFF(%eax), %edx + subl foo@GOTTPOFF(%edx), %eax + subl $bar@TPOFF, %eax + movl foo@GOTNTPOFF(%edx), %ecx + movl %gs:(%ecx), %eax + movl %gs:bar@NTPOFF, %eax +EOF +dnl +if AC_TRY_COMMAND(${CC-cc} -c $CFLAGS conftest.s 1>&AS_MESSAGE_LOG_FD); then + libc_cv_386_tls=yes +else + libc_cv_386_tls=no +fi +rm -f conftest*]) +if test $libc_cv_386_tls = no; then + AC_MSG_ERROR([the assembler must support TLS]) +fi + +dnl It is always possible to access static and hidden symbols in an +dnl position independent way. +AC_DEFINE(PI_STATIC_AND_HIDDEN) |