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-rw-r--r--sysdeps/unix/sysv/linux/i386/lowlevellock.S42
-rw-r--r--sysdeps/unix/sysv/linux/kernel-features.h3
-rw-r--r--sysdeps/unix/sysv/linux/lowlevellock-futex.h19
-rw-r--r--sysdeps/unix/sysv/linux/x86_64/cancellation.S13
-rw-r--r--sysdeps/unix/sysv/linux/x86_64/lowlevellock.S42
5 files changed, 13 insertions, 106 deletions
diff --git a/sysdeps/unix/sysv/linux/i386/lowlevellock.S b/sysdeps/unix/sysv/linux/i386/lowlevellock.S
index 416b484170..feda390eeb 100644
--- a/sysdeps/unix/sysv/linux/i386/lowlevellock.S
+++ b/sysdeps/unix/sysv/linux/i386/lowlevellock.S
@@ -25,48 +25,16 @@
.text
-#ifdef __ASSUME_PRIVATE_FUTEX
-# define LOAD_PRIVATE_FUTEX_WAIT(reg) \
+#define LOAD_PRIVATE_FUTEX_WAIT(reg) \
movl $(FUTEX_WAIT | FUTEX_PRIVATE_FLAG), reg
-# define LOAD_PRIVATE_FUTEX_WAKE(reg) \
+#define LOAD_PRIVATE_FUTEX_WAKE(reg) \
movl $(FUTEX_WAKE | FUTEX_PRIVATE_FLAG), reg
-# define LOAD_FUTEX_WAIT(reg) \
+#define LOAD_FUTEX_WAIT(reg) \
xorl $(FUTEX_WAIT | FUTEX_PRIVATE_FLAG), reg
-# define LOAD_FUTEX_WAIT_ABS(reg) \
+#define LOAD_FUTEX_WAIT_ABS(reg) \
xorl $(FUTEX_WAIT_BITSET | FUTEX_PRIVATE_FLAG | FUTEX_CLOCK_REALTIME), reg
-# define LOAD_FUTEX_WAKE(reg) \
+#define LOAD_FUTEX_WAKE(reg) \
xorl $(FUTEX_WAKE | FUTEX_PRIVATE_FLAG), reg
-#else
-# if FUTEX_WAIT == 0
-# define LOAD_PRIVATE_FUTEX_WAIT(reg) \
- movl %gs:PRIVATE_FUTEX, reg
-# else
-# define LOAD_PRIVATE_FUTEX_WAIT(reg) \
- movl %gs:PRIVATE_FUTEX, reg ; \
- orl $FUTEX_WAIT, reg
-# endif
-# define LOAD_PRIVATE_FUTEX_WAKE(reg) \
- movl %gs:PRIVATE_FUTEX, reg ; \
- orl $FUTEX_WAKE, reg
-# if FUTEX_WAIT == 0
-# define LOAD_FUTEX_WAIT(reg) \
- xorl $FUTEX_PRIVATE_FLAG, reg ; \
- andl %gs:PRIVATE_FUTEX, reg
-# else
-# define LOAD_FUTEX_WAIT(reg) \
- xorl $FUTEX_PRIVATE_FLAG, reg ; \
- andl %gs:PRIVATE_FUTEX, reg ; \
- orl $FUTEX_WAIT, reg
-# endif
-# define LOAD_FUTEX_WAIT_ABS(reg) \
- xorl $FUTEX_PRIVATE_FLAG, reg ; \
- andl %gs:PRIVATE_FUTEX, reg ; \
- orl $FUTEX_WAIT_BITSET | FUTEX_CLOCK_REALTIME, reg
-# define LOAD_FUTEX_WAKE(reg) \
- xorl $FUTEX_PRIVATE_FLAG, reg ; \
- andl %gs:PRIVATE_FUTEX, reg ; \
- orl $FUTEX_WAKE, reg
-#endif
.globl __lll_lock_wait_private
.type __lll_lock_wait_private,@function
diff --git a/sysdeps/unix/sysv/linux/kernel-features.h b/sysdeps/unix/sysv/linux/kernel-features.h
index 2ef2916a52..b90ea30195 100644
--- a/sysdeps/unix/sysv/linux/kernel-features.h
+++ b/sysdeps/unix/sysv/linux/kernel-features.h
@@ -61,9 +61,6 @@
configurations). */
#define __ASSUME_SET_ROBUST_LIST 1
-/* Support for private futexes was added in 2.6.22. */
-#define __ASSUME_PRIVATE_FUTEX 1
-
/* Support for various CLOEXEC and NONBLOCK flags was added in
2.6.27. */
#define __ASSUME_IN_NONBLOCK 1
diff --git a/sysdeps/unix/sysv/linux/lowlevellock-futex.h b/sysdeps/unix/sysv/linux/lowlevellock-futex.h
index 4eddadb052..fc834ed16e 100644
--- a/sysdeps/unix/sysv/linux/lowlevellock-futex.h
+++ b/sysdeps/unix/sysv/linux/lowlevellock-futex.h
@@ -53,31 +53,16 @@
#if IS_IN (libc) || IS_IN (rtld)
/* In libc.so or ld.so all futexes are private. */
-# ifdef __ASSUME_PRIVATE_FUTEX
-# define __lll_private_flag(fl, private) \
+# define __lll_private_flag(fl, private) \
({ \
/* Prevent warnings in callers of this macro. */ \
int __lll_private_flag_priv __attribute__ ((unused)); \
__lll_private_flag_priv = (private); \
((fl) | FUTEX_PRIVATE_FLAG); \
})
-# else
-# define __lll_private_flag(fl, private) \
- ((fl) | THREAD_GETMEM (THREAD_SELF, header.private_futex))
-# endif
#else
-# ifdef __ASSUME_PRIVATE_FUTEX
-# define __lll_private_flag(fl, private) \
+# define __lll_private_flag(fl, private) \
(((fl) | FUTEX_PRIVATE_FLAG) ^ (private))
-# else
-# define __lll_private_flag(fl, private) \
- (__builtin_constant_p (private) \
- ? ((private) == 0 \
- ? ((fl) | THREAD_GETMEM (THREAD_SELF, header.private_futex)) \
- : (fl)) \
- : ((fl) | (((private) ^ FUTEX_PRIVATE_FLAG) \
- & THREAD_GETMEM (THREAD_SELF, header.private_futex))))
-# endif
#endif
#define lll_futex_syscall(nargs, futexp, op, ...) \
diff --git a/sysdeps/unix/sysv/linux/x86_64/cancellation.S b/sysdeps/unix/sysv/linux/x86_64/cancellation.S
index f3fb19dec2..53dbabd6d2 100644
--- a/sysdeps/unix/sysv/linux/x86_64/cancellation.S
+++ b/sysdeps/unix/sysv/linux/x86_64/cancellation.S
@@ -34,19 +34,8 @@
#endif
-#ifdef __ASSUME_PRIVATE_FUTEX
-# define LOAD_PRIVATE_FUTEX_WAIT(reg) \
+#define LOAD_PRIVATE_FUTEX_WAIT(reg) \
movl $(FUTEX_WAIT | FUTEX_PRIVATE_FLAG), reg
-#else
-# if FUTEX_WAIT == 0
-# define LOAD_PRIVATE_FUTEX_WAIT(reg) \
- movl %fs:PRIVATE_FUTEX, reg
-# else
-# define LOAD_PRIVATE_FUTEX_WAIT(reg) \
- movl %fs:PRIVATE_FUTEX, reg ; \
- orl $FUTEX_WAIT, reg
-# endif
-#endif
/* It is crucial that the functions in this file don't modify registers
other than %rax and %r11. The syscall wrapper code depends on this
diff --git a/sysdeps/unix/sysv/linux/x86_64/lowlevellock.S b/sysdeps/unix/sysv/linux/x86_64/lowlevellock.S
index 92561e1da0..71dd740202 100644
--- a/sysdeps/unix/sysv/linux/x86_64/lowlevellock.S
+++ b/sysdeps/unix/sysv/linux/x86_64/lowlevellock.S
@@ -25,48 +25,16 @@
.text
-#ifdef __ASSUME_PRIVATE_FUTEX
-# define LOAD_PRIVATE_FUTEX_WAIT(reg) \
+#define LOAD_PRIVATE_FUTEX_WAIT(reg) \
movl $(FUTEX_WAIT | FUTEX_PRIVATE_FLAG), reg
-# define LOAD_PRIVATE_FUTEX_WAKE(reg) \
+#define LOAD_PRIVATE_FUTEX_WAKE(reg) \
movl $(FUTEX_WAKE | FUTEX_PRIVATE_FLAG), reg
-# define LOAD_FUTEX_WAIT(reg) \
+#define LOAD_FUTEX_WAIT(reg) \
xorl $(FUTEX_WAIT | FUTEX_PRIVATE_FLAG), reg
-# define LOAD_FUTEX_WAIT_ABS(reg) \
+#define LOAD_FUTEX_WAIT_ABS(reg) \
xorl $(FUTEX_WAIT_BITSET | FUTEX_PRIVATE_FLAG | FUTEX_CLOCK_REALTIME), reg
-# define LOAD_FUTEX_WAKE(reg) \
+#define LOAD_FUTEX_WAKE(reg) \
xorl $(FUTEX_WAKE | FUTEX_PRIVATE_FLAG), reg
-#else
-# if FUTEX_WAIT == 0
-# define LOAD_PRIVATE_FUTEX_WAIT(reg) \
- movl %fs:PRIVATE_FUTEX, reg
-# else
-# define LOAD_PRIVATE_FUTEX_WAIT(reg) \
- movl %fs:PRIVATE_FUTEX, reg ; \
- orl $FUTEX_WAIT, reg
-# endif
-# define LOAD_PRIVATE_FUTEX_WAKE(reg) \
- movl %fs:PRIVATE_FUTEX, reg ; \
- orl $FUTEX_WAKE, reg
-# if FUTEX_WAIT == 0
-# define LOAD_FUTEX_WAIT(reg) \
- xorl $FUTEX_PRIVATE_FLAG, reg ; \
- andl %fs:PRIVATE_FUTEX, reg
-# else
-# define LOAD_FUTEX_WAIT(reg) \
- xorl $FUTEX_PRIVATE_FLAG, reg ; \
- andl %fs:PRIVATE_FUTEX, reg ; \
- orl $FUTEX_WAIT, reg
-# endif
-# define LOAD_FUTEX_WAIT_ABS(reg) \
- xorl $FUTEX_PRIVATE_FLAG, reg ; \
- andl %fs:PRIVATE_FUTEX, reg ; \
- orl $FUTEX_WAIT_BITSET | FUTEX_CLOCK_REALTIME, reg
-# define LOAD_FUTEX_WAKE(reg) \
- xorl $FUTEX_PRIVATE_FLAG, reg ; \
- andl %fs:PRIVATE_FUTEX, reg ; \
- orl $FUTEX_WAKE, reg
-#endif
.globl __lll_lock_wait_private
generated by cgit v1.2.3 (git 2.25.1) at 2024-11-19 15:23:42 +0000