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| author | H.J. Lu <hongjiu.lu@intel.com> | 2010-10-13 22:12:03 -0400 |
|---|---|---|
| committer | Ulrich Drepper <drepper@gmail.com> | 2010-10-13 22:12:03 -0400 |
| commit | f90681487d90a6eea8f1c60021bc8dd83313c59b (patch) | |
| tree | 79e5d816abda65fc72f4a163e552bdac4580deb6 /nptl/sysdeps | |
| parent | b833d51fbbf78b38c6ff68074c22d3fe3ddd0ce3 (diff) | |
| download | glibc-f90681487d90a6eea8f1c60021bc8dd83313c59b.tar.gz glibc-f90681487d90a6eea8f1c60021bc8dd83313c59b.tar.xz glibc-f90681487d90a6eea8f1c60021bc8dd83313c59b.zip | |
Fix alignment of AVX safe area on x86-64.
Diffstat (limited to 'nptl/sysdeps')
| -rw-r--r-- | nptl/sysdeps/x86_64/pthreaddef.h | 5 | ||||
| -rw-r--r-- | nptl/sysdeps/x86_64/tls.h | 7 |
2 files changed, 4 insertions, 8 deletions
diff --git a/nptl/sysdeps/x86_64/pthreaddef.h b/nptl/sysdeps/x86_64/pthreaddef.h index be63a8c74a..8ec135c048 100644 --- a/nptl/sysdeps/x86_64/pthreaddef.h +++ b/nptl/sysdeps/x86_64/pthreaddef.h @@ -27,8 +27,9 @@ /* Minimal stack size after allocating thread descriptor and guard size. */ #define MINIMAL_REST_STACK 2048 -/* Alignment requirement for TCB. */ -#define TCB_ALIGNMENT 16 +/* Alignment requirement for TCB. Need to store post-AVX vector registers + in the TCB and we want the storage to be aligned at 32-byte. */ +#define TCB_ALIGNMENT 32 /* Location of current stack frame. The frame pointer is not usable. */ diff --git a/nptl/sysdeps/x86_64/tls.h b/nptl/sysdeps/x86_64/tls.h index e39eb5f69d..41b5e6daa2 100644 --- a/nptl/sysdeps/x86_64/tls.h +++ b/nptl/sysdeps/x86_64/tls.h @@ -117,12 +117,7 @@ typedef struct # define TLS_TCB_SIZE sizeof (struct pthread) /* Alignment requirements for the TCB. */ -//# 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 +# define TLS_TCB_ALIGN __alignof__ (struct pthread) /* The TCB can have any size and the memory following the address the thread pointer points to is unspecified. Allocate the TCB there. */ |