projects / ipfire-2.x.git / blame
| Commit | Line | Data |
|---|---|---|
| 12788f63 MT |
1 | 2010-10-13 H.J. Lu <hongjiu.lu@intel.com> |
| 2 | ||
| 3 | [BZ #12113] | |
| 4 | * sysdeps/x86_64/pthreaddef.h (TCB_ALIGNMENT): Changed to 32. | |
| 5 | * sysdeps/x86_64/tls.h (TLS_TCB_ALIGN): Defined with alignment | |
| 6 | of "struct pthread". | |
| 7 | ||
| 8 | Index: glibc-2.12-2-gc4ccff1/nptl/sysdeps/x86_64/pthreaddef.h | |
| 9 | =================================================================== | |
| 10 | --- glibc-2.12-2-gc4ccff1.orig/nptl/sysdeps/x86_64/pthreaddef.h | |
| 11 | +++ glibc-2.12-2-gc4ccff1/nptl/sysdeps/x86_64/pthreaddef.h | |
| 12 | @@ -27,8 +27,9 @@ | |
| 13 | /* Minimal stack size after allocating thread descriptor and guard size. */ | |
| 14 | #define MINIMAL_REST_STACK 2048 | |
| 15 | ||
| 16 | -/* Alignment requirement for TCB. */ | |
| 17 | -#define TCB_ALIGNMENT 16 | |
| 18 | +/* Alignment requirement for TCB. Need to store post-AVX vector registers | |
| 19 | + in the TCB and we want the storage to be aligned at 32-byte. */ | |
| 20 | +#define TCB_ALIGNMENT 32 | |
| 21 | ||
| 22 | ||
| 23 | /* Location of current stack frame. The frame pointer is not usable. */ | |
| 24 | Index: glibc-2.12-2-gc4ccff1/nptl/sysdeps/x86_64/tls.h | |
| 25 | =================================================================== | |
| 26 | --- glibc-2.12-2-gc4ccff1.orig/nptl/sysdeps/x86_64/tls.h | |
| 27 | +++ glibc-2.12-2-gc4ccff1/nptl/sysdeps/x86_64/tls.h | |
| 28 | @@ -117,12 +117,7 @@ typedef struct | |
| 29 | # define TLS_TCB_SIZE sizeof (struct pthread) | |
| 30 | ||
| 31 | /* Alignment requirements for the TCB. */ | |
| 32 | -//# define TLS_TCB_ALIGN __alignof__ (struct pthread) | |
| 33 | -// Normally the above would be correct But we have to store post-AVX | |
| 34 | -// vector registers in the TCB and we want the storage to be aligned. | |
| 35 | -// unfortunately there isn't yet a type for these values and hence no | |
| 36 | -// 32-byte alignment requirement. Make this explicit, for now. | |
| 37 | -# define TLS_TCB_ALIGN 32 | |
| 38 | +# define TLS_TCB_ALIGN __alignof__ (struct pthread) | |
| 39 | ||
| 40 | /* The TCB can have any size and the memory following the address the | |
| 41 | thread pointer points to is unspecified. Allocate the TCB there. */ |