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93a739d4a1
This patch reserves space for HWCAP3/HWCAP4 in the TCB of powerpc. These hardware capabilities bits will be used by future Power architectures. Versioned symbol '__parse_hwcap_3_4_and_convert_at_platform' advertises the availability of the new HWCAP3/HWCAP4 data in the TCB. This is an ABI change for GLIBC 2.39. Suggested-by: Peter Bergner <bergner@linux.ibm.com> Reviewed-by: Peter Bergner <bergner@linux.ibm.com>
30 lines
1.2 KiB
Plaintext
30 lines
1.2 KiB
Plaintext
#include <sysdep.h>
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#include <tls.h>
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#include <kernel-features.h>
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--
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-- Abuse tls.h macros to derive offsets relative to the thread register.
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# undef __thread_register
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# define __thread_register ((void *) 0)
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# define thread_offsetof(mem) ((ptrdiff_t) THREAD_SELF + offsetof (struct pthread, mem))
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#if TLS_MULTIPLE_THREADS_IN_TCB
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MULTIPLE_THREADS_OFFSET thread_offsetof (header.multiple_threads)
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#endif
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TID thread_offsetof (tid)
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POINTER_GUARD (offsetof (tcbhead_t, pointer_guard) - TLS_TCB_OFFSET - sizeof (tcbhead_t))
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TAR_SAVE (offsetof (tcbhead_t, tar_save) - TLS_TCB_OFFSET - sizeof (tcbhead_t))
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DSO_SLOT1 (offsetof (tcbhead_t, dso_slot1) - TLS_TCB_OFFSET - sizeof (tcbhead_t))
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DSO_SLOT2 (offsetof (tcbhead_t, dso_slot2) - TLS_TCB_OFFSET - sizeof (tcbhead_t))
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#ifdef __powerpc64__
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TCB_AT_PLATFORM (offsetof (tcbhead_t, at_platform) - TLS_TCB_OFFSET - sizeof(tcbhead_t))
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#endif
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#ifndef __powerpc64__
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TCB_AT_PLATFORM (offsetof (tcbhead_t, at_platform) - TLS_TCB_OFFSET - sizeof(tcbhead_t))
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PADDING (offsetof (tcbhead_t, padding) - TLS_TCB_OFFSET - sizeof(tcbhead_t))
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#endif
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TCB_HWCAP (offsetof (tcbhead_t, hwcap) - TLS_TCB_OFFSET - sizeof (tcbhead_t))
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TCB_HWCAP_EXTN (offsetof (tcbhead_t, hwcap_extn) - TLS_TCB_OFFSET - sizeof (tcbhead_t))
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