From: Ulrich Drepper Date: Wed, 29 Jul 2009 16:01:04 +0000 (-0700) Subject: Fix x86-64 TCB alignment for future processor versions. X-Git-Tag: fedora/glibc-2.10.90-11~1^2~2 X-Git-Url: https://sourceware.org/git/?a=commitdiff_plain;h=586fa886ad1473759cddf897691fd3c63a6d2360;p=glibc.git Fix x86-64 TCB alignment for future processor versions. --- diff --git a/ChangeLog b/ChangeLog index 081d59b28d..0273a595c4 100644 --- a/ChangeLog +++ b/ChangeLog @@ -1,7 +1,6 @@ 2009-07-29 Ulrich Drepper - * sysdeps/x86_64/dl-trampoline.S (_dl_runtime_profile): Improve CFI - information. + * sysdeps/x86_64/dl-trampoline.S (_dl_runtime_profile): Improve CFI. 2009-07-28 H.J. Lu diff --git a/nptl/ChangeLog b/nptl/ChangeLog index 24fd28a0dc..20031b5ae6 100644 --- a/nptl/ChangeLog +++ b/nptl/ChangeLog @@ -1,9 +1,13 @@ 2009-07-29 Ulrich Drepper + * sysdeps/x86_64/tls.h (TLS_TCB_ALIGN): Define explicitly to 32. + * sysdeps/x86_64/tls.h (tcbhead_t): Add room for SSE registers the - dynamic linker might have to save. Define RTLD_CHECK_FOREIGN_CALL, - RTLD_ENABLE_FOREIGN_CALL, RTLD_PREPARE_FOREIGN_CALL, and - RTLD_FINALIZE_FOREIGN_CALL. Pretty printing. + dynamic linker might have to save. + Define RTLD_CHECK_FOREIGN_CALL, RTLD_ENABLE_FOREIGN_CALL, + RTLD_PREPARE_FOREIGN_CALL, and RTLD_FINALIZE_FOREIGN_CALL. Pretty + printing. + * sysdeps/x86_64/tcb-offsets.sym: Add RTLD_SAVESPACE_SSE. 2009-07-28 Ulrich Drepper diff --git a/nptl/sysdeps/x86_64/tls.h b/nptl/sysdeps/x86_64/tls.h index a51b77052a..4212038ab5 100644 --- a/nptl/sysdeps/x86_64/tls.h +++ b/nptl/sysdeps/x86_64/tls.h @@ -117,7 +117,12 @@ typedef struct # define TLS_TCB_SIZE sizeof (struct pthread) /* Alignment requirements for the TCB. */ -# define TLS_TCB_ALIGN __alignof__ (struct pthread) +//# define TLS_TCB_ALIGN __alignof__ (struct pthread) +// Normally the above would be correct But we have to store post-AVX +// vector registers in the TCB and we want the storage to be aligned. +// unfortunately there isn't yet a type for these values and hence no +// 32-byte alignment requirement. Make this explicit, for now. +# define TLS_TCB_ALIGN 32 /* The TCB can have any size and the memory following the address the thread pointer points to is unspecified. Allocate the TCB there. */