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x86_64: Remove stalled __GNUC_PREREQ (6, 0) test in THREAD_SELF()

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Currenty GCC-12 is required as the minimum supported compiler
version.  Remove stalled __GNUC_PREREQ (6, 0) test for
GCC compiler version in THREAD_SELF() macro definition.

Signed-off-by: Uros Bizjak <ubizjak@gmail.com>
Cc: H.J.Lu <hjl.tools@gmail.com>
Cc: Florian Weimer <fweimer@redhat.com>
Cc: Carlos O'Donell <carlos@redhat.com>
Reviewed-by: H.J. Lu <hjl.tools@gmail.com>
This commit is contained in:
Uros Bizjak
2025-08-17 17:49:54 +02:00
committed by H.J. Lu
parent 0e49fc68aa
commit b0f0c41a5f
1 changed files with 1 additions and 14 deletions
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15
sysdeps/x86_64/nptl/tls.h
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@@ -168,22 +168,9 @@ _Static_assert (offsetof (tcbhead_t, __glibc_unused2) == 0x80,
THREAD_GETMEM (__pd, header.dtv); })
/* Return the thread descriptor for the current thread.
The contained asm must *not* be marked volatile since otherwise
assignments like
pthread_descr self = thread_self();
do not get optimized away. */
# if __GNUC_PREREQ (6, 0)
/* Return the thread descriptor for the current thread. */
# define THREAD_SELF \
(*(struct pthread *__seg_fs *) offsetof (struct pthread, header.self))
# else
# define THREAD_SELF \
({ struct pthread *__self; \
asm ("mov %%fs:%c1,%0" : "=r" (__self) \
: "i" (offsetof (struct pthread, header.self))); \
__self;})
# endif
/* Magic for libthread_db to know how to do THREAD_SELF. */
# define DB_THREAD_SELF_INCLUDE <sys/reg.h> /* For the FS constant. */