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-rw-r--r--sysdeps/unix/sysv/linux/i386/lowlevellock.h240
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diff --git a/sysdeps/unix/sysv/linux/i386/lowlevellock.h b/sysdeps/unix/sysv/linux/i386/lowlevellock.h
deleted file mode 100644
index 94dccc4ce7..0000000000
--- a/sysdeps/unix/sysv/linux/i386/lowlevellock.h
+++ /dev/null
@@ -1,240 +0,0 @@
-/* Copyright (C) 2002-2019 Free Software Foundation, Inc.
- This file is part of the GNU C Library.
- Contributed by Ulrich Drepper <drepper@redhat.com>, 2002.
-
- The GNU C Library is free software; you can redistribute it and/or
- modify it under the terms of the GNU Lesser General Public
- License as published by the Free Software Foundation; either
- version 2.1 of the License, or (at your option) any later version.
-
- The GNU C Library is distributed in the hope that it will be useful,
- but WITHOUT ANY WARRANTY; without even the implied warranty of
- MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
- Lesser General Public License for more details.
-
- You should have received a copy of the GNU Lesser General Public
- License along with the GNU C Library; if not, see
- <http://www.gnu.org/licenses/>. */
-
-#ifndef _LOWLEVELLOCK_H
-#define _LOWLEVELLOCK_H 1
-
-#ifndef __ASSEMBLER__
-# include <time.h>
-# include <sys/param.h>
-# include <bits/pthreadtypes.h>
-# include <kernel-features.h>
-/* <tcb-offsets.h> is generated from tcb-offsets.sym to define offsets
- and sizes of types in <tls.h> as well as <pthread.h> which includes
- <lowlevellock.h> via nptl/descr.h. Don't include <tcb-offsets.h>
- when generating <tcb-offsets.h> to avoid circular dependency which
- may lead to build hang on a many-core machine. */
-# ifndef GEN_AS_CONST_HEADERS
-# include <tcb-offsets.h>
-# endif
-
-# ifndef LOCK_INSTR
-# ifdef UP
-# define LOCK_INSTR /* nothing */
-# else
-# define LOCK_INSTR "lock;"
-# endif
-# endif
-#else
-# ifndef LOCK
-# ifdef UP
-# define LOCK
-# else
-# define LOCK lock
-# endif
-# endif
-#endif
-
-#include <lowlevellock-futex.h>
-
-/* XXX Remove when no assembler code uses futexes anymore. */
-#define SYS_futex __NR_futex
-
-#ifndef __ASSEMBLER__
-
-/* Initializer for compatibility lock. */
-#define LLL_LOCK_INITIALIZER (0)
-#define LLL_LOCK_INITIALIZER_LOCKED (1)
-#define LLL_LOCK_INITIALIZER_WAITERS (2)
-
-
-/* NB: in the lll_trylock macro we simply return the value in %eax
- after the cmpxchg instruction. In case the operation succeded this
- value is zero. In case the operation failed, the cmpxchg instruction
- has loaded the current value of the memory work which is guaranteed
- to be nonzero. */
-#if !IS_IN (libc) || defined UP
-# define __lll_trylock_asm LOCK_INSTR "cmpxchgl %2, %1"
-#else
-# define __lll_trylock_asm "cmpl $0, %%gs:%P5\n\t" \
- "je 0f\n\t" \
- "lock\n" \
- "0:\tcmpxchgl %2, %1"
-#endif
-
-#define lll_trylock(futex) \
- ({ int ret; \
- __asm __volatile (__lll_trylock_asm \
- : "=a" (ret), "=m" (futex) \
- : "r" (LLL_LOCK_INITIALIZER_LOCKED), "m" (futex), \
- "0" (LLL_LOCK_INITIALIZER), \
- "i" (MULTIPLE_THREADS_OFFSET) \
- : "memory"); \
- ret; })
-
-
-#define lll_cond_trylock(futex) \
- ({ int ret; \
- __asm __volatile (LOCK_INSTR "cmpxchgl %2, %1" \
- : "=a" (ret), "=m" (futex) \
- : "r" (LLL_LOCK_INITIALIZER_WAITERS), \
- "m" (futex), "0" (LLL_LOCK_INITIALIZER) \
- : "memory"); \
- ret; })
-
-#if !IS_IN (libc) || defined UP
-# define __lll_lock_asm_start LOCK_INSTR "cmpxchgl %1, %2\n\t"
-#else
-# define __lll_lock_asm_start "cmpl $0, %%gs:%P6\n\t" \
- "je 0f\n\t" \
- "lock\n" \
- "0:\tcmpxchgl %1, %2\n\t"
-#endif
-
-#define lll_lock(futex, private) \
- (void) \
- ({ int ignore1, ignore2; \
- if (__builtin_constant_p (private) && (private) == LLL_PRIVATE) \
- __asm __volatile (__lll_lock_asm_start \
- "jz 18f\n\t" \
- "1:\tleal %2, %%ecx\n" \
- "2:\tcall __lll_lock_wait_private\n" \
- "18:" \
- : "=a" (ignore1), "=c" (ignore2), "=m" (futex) \
- : "0" (0), "1" (1), "m" (futex), \
- "i" (MULTIPLE_THREADS_OFFSET) \
- : "memory"); \
- else \
- { \
- int ignore3; \
- __asm __volatile (__lll_lock_asm_start \
- "jz 18f\n\t" \
- "1:\tleal %2, %%edx\n" \
- "0:\tmovl %8, %%ecx\n" \
- "2:\tcall __lll_lock_wait\n" \
- "18:" \
- : "=a" (ignore1), "=c" (ignore2), \
- "=m" (futex), "=&d" (ignore3) \
- : "1" (1), "m" (futex), \
- "i" (MULTIPLE_THREADS_OFFSET), "0" (0), \
- "g" ((int) (private)) \
- : "memory"); \
- } \
- })
-
-
-/* Special version of lll_lock which causes the unlock function to
- always wakeup waiters. */
-#define lll_cond_lock(futex, private) \
- (void) \
- ({ int ignore1, ignore2, ignore3; \
- __asm __volatile (LOCK_INSTR "cmpxchgl %1, %2\n\t" \
- "jz 18f\n\t" \
- "1:\tleal %2, %%edx\n" \
- "0:\tmovl %7, %%ecx\n" \
- "2:\tcall __lll_lock_wait\n" \
- "18:" \
- : "=a" (ignore1), "=c" (ignore2), "=m" (futex), \
- "=&d" (ignore3) \
- : "0" (0), "1" (2), "m" (futex), "g" ((int) (private))\
- : "memory"); \
- })
-
-
-#define lll_timedlock(futex, timeout, private) \
- ({ int result, ignore1, ignore2, ignore3; \
- __asm __volatile (LOCK_INSTR "cmpxchgl %1, %3\n\t" \
- "jz 18f\n\t" \
- "1:\tleal %3, %%ecx\n" \
- "0:\tmovl %8, %%edx\n" \
- "2:\tcall __lll_timedlock_wait\n" \
- "18:" \
- : "=a" (result), "=c" (ignore1), "=&d" (ignore2), \
- "=m" (futex), "=S" (ignore3) \
- : "0" (0), "1" (1), "m" (futex), "m" (timeout), \
- "4" ((int) (private)) \
- : "memory"); \
- result; })
-
-extern int __lll_timedlock_elision (int *futex, short *adapt_count,
- const struct timespec *timeout,
- int private) attribute_hidden;
-
-#define lll_timedlock_elision(futex, adapt_count, timeout, private) \
- __lll_timedlock_elision(&(futex), &(adapt_count), timeout, private)
-
-#if !IS_IN (libc) || defined UP
-# define __lll_unlock_asm LOCK_INSTR "subl $1, %0\n\t"
-#else
-# define __lll_unlock_asm "cmpl $0, %%gs:%P3\n\t" \
- "je 0f\n\t" \
- "lock\n" \
- "0:\tsubl $1,%0\n\t"
-#endif
-
-#define lll_unlock(futex, private) \
- (void) \
- ({ int ignore; \
- if (__builtin_constant_p (private) && (private) == LLL_PRIVATE) \
- __asm __volatile (__lll_unlock_asm \
- "je 18f\n\t" \
- "1:\tleal %0, %%eax\n" \
- "2:\tcall __lll_unlock_wake_private\n" \
- "18:" \
- : "=m" (futex), "=&a" (ignore) \
- : "m" (futex), "i" (MULTIPLE_THREADS_OFFSET) \
- : "memory"); \
- else \
- { \
- int ignore2; \
- __asm __volatile (__lll_unlock_asm \
- "je 18f\n\t" \
- "1:\tleal %0, %%eax\n" \
- "0:\tmovl %5, %%ecx\n" \
- "2:\tcall __lll_unlock_wake\n" \
- "18:" \
- : "=m" (futex), "=&a" (ignore), "=&c" (ignore2) \
- : "i" (MULTIPLE_THREADS_OFFSET), "m" (futex), \
- "g" ((int) (private)) \
- : "memory"); \
- } \
- })
-
-
-#define lll_islocked(futex) \
- (futex != LLL_LOCK_INITIALIZER)
-
-extern int __lll_lock_elision (int *futex, short *adapt_count, int private)
- attribute_hidden;
-
-extern int __lll_unlock_elision(int *lock, int private)
- attribute_hidden;
-
-extern int __lll_trylock_elision(int *lock, short *adapt_count)
- attribute_hidden;
-
-#define lll_lock_elision(futex, adapt_count, private) \
- __lll_lock_elision (&(futex), &(adapt_count), private)
-#define lll_unlock_elision(futex, adapt_count, private) \
- __lll_unlock_elision (&(futex), private)
-#define lll_trylock_elision(futex, adapt_count) \
- __lll_trylock_elision(&(futex), &(adapt_count))
-
-#endif /* !__ASSEMBLER__ */
-
-#endif /* lowlevellock.h */
generated by cgit v1.2.3 (git 2.25.1) at 2024-11-18 05:56:37 +0000