diff options
| -rw-r--r-- | ChangeLog | 6 | ||||
| -rw-r--r-- | include/atomic.h | 18 | ||||
| -rw-r--r-- | sysdeps/i386/i486/bits/atomic.h | 31 | ||||
| -rw-r--r-- | sysdeps/x86_64/bits/atomic.h | 36 |
4 files changed, 64 insertions, 27 deletions
@@ -1,3 +1,9 @@ +2009-02-08 Ulrich Drepper <drepper@redhat.com> + + * include/atomic.h: Define catomic_and if not already defined. + * sysdeps/x86_64/bits/atomic.h: Define catomic_and. + * sysdeps/i386/i486/bits/atomic.h: Likewise. + 2009-02-07 Ulrich Drepper <drepper@redhat.com> * malloc/malloc.c (_int_free): Second argument is now mchunkptr. diff --git a/include/atomic.h b/include/atomic.h index 2ad8b5f..7c0548b 100644 --- a/include/atomic.h +++ b/include/atomic.h @@ -1,5 +1,5 @@ /* Internal macros for atomic operations for GNU C Library. - Copyright (C) 2002, 2003, 2004, 2005, 2006 Free Software Foundation, Inc. + Copyright (C) 2002-2006, 2009 Free Software Foundation, Inc. This file is part of the GNU C Library. Contributed by Ulrich Drepper <drepper@redhat.com>, 2002. @@ -415,6 +415,22 @@ } while (0) #endif +#ifndef catomic_and +# define catomic_and(mem, mask) \ + do { \ + __typeof (*(mem)) __atg20_old; \ + __typeof (mem) __atg20_memp = (mem); \ + __typeof (*(mem)) __atg20_mask = (mask); \ + \ + do \ + __atg20_old = (*__atg20_memp); \ + while (__builtin_expect \ + (catomic_compare_and_exchange_bool_acq (__atg20_memp, \ + __atg20_old & __atg20_mask,\ + __atg20_old), 0)); \ + } while (0) +#endif + /* Atomically *mem &= mask and return the old value of *mem. */ #ifndef atomic_and_val # define atomic_and_val(mem, mask) \ diff --git a/sysdeps/i386/i486/bits/atomic.h b/sysdeps/i386/i486/bits/atomic.h index 21eea71..4ee6fef 100644 --- a/sysdeps/i386/i486/bits/atomic.h +++ b/sysdeps/i386/i486/bits/atomic.h @@ -1,4 +1,4 @@ -/* Copyright (C) 2002, 2003, 2004, 2006, 2007 Free Software Foundation, Inc. +/* Copyright (C) 2002-2004, 2006, 2007, 2009 Free Software Foundation, Inc. This file is part of the GNU C Library. Contributed by Ulrich Drepper <drepper@redhat.com>, 2002. @@ -500,24 +500,34 @@ typedef uintmax_t uatomic_max_t; #define atomic_delay() asm ("rep; nop") -#define atomic_and(mem, mask) \ +#define __arch_and_body(lock, mem, mask) \ do { \ if (sizeof (*mem) == 1) \ - __asm __volatile (LOCK_PREFIX "andb %b1, %0" \ + __asm __volatile (lock "andb %b1, %0" \ : "=m" (*mem) \ - : "iq" (mask), "m" (*mem)); \ + : "iq" (mask), "m" (*mem), \ + "i" (offsetof (tcbhead_t, multiple_threads))); \ else if (sizeof (*mem) == 2) \ - __asm __volatile (LOCK_PREFIX "andw %w1, %0" \ + __asm __volatile (lock "andw %w1, %0" \ : "=m" (*mem) \ - : "ir" (mask), "m" (*mem)); \ + : "ir" (mask), "m" (*mem), \ + "i" (offsetof (tcbhead_t, multiple_threads))); \ else if (sizeof (*mem) == 4) \ - __asm __volatile (LOCK_PREFIX "andl %1, %0" \ + __asm __volatile (lock "andl %1, %0" \ : "=m" (*mem) \ - : "ir" (mask), "m" (*mem)); \ + : "ir" (mask), "m" (*mem), \ + "i" (offsetof (tcbhead_t, multiple_threads))); \ else \ abort (); \ } while (0) +#define __arch_cprefix \ + "cmpl $0, %%gs:%P3\n\tje 0f\n\tlock\n0:\t" + +#define atomic_and(mem, mask) __arch_and_body (LOCK_PREFIX, mem, mask) + +#define catomic_and(mem, mask) __arch_and_body (__arch_cprefix, mem, mask) + #define __arch_or_body(lock, mem, mask) \ do { \ @@ -542,7 +552,4 @@ typedef uintmax_t uatomic_max_t; #define atomic_or(mem, mask) __arch_or_body (LOCK_PREFIX, mem, mask) -#define __arch_or_cprefix \ - "cmpl $0, %%gs:%P3\n\tje 0f\n\tlock\n0:\t" - -#define catomic_or(mem, mask) __arch_or_body (__arch_or_cprefix, mem, mask) +#define catomic_or(mem, mask) __arch_or_body (__arch_cprefix, mem, mask) diff --git a/sysdeps/x86_64/bits/atomic.h b/sysdeps/x86_64/bits/atomic.h index 39c6ecb..7c138eb 100644 --- a/sysdeps/x86_64/bits/atomic.h +++ b/sysdeps/x86_64/bits/atomic.h @@ -1,4 +1,4 @@ -/* Copyright (C) 2002, 2003, 2004, 2006, 2007 Free Software Foundation, Inc. +/* Copyright (C) 2002-2004, 2006, 2007, 2009 Free Software Foundation, Inc. This file is part of the GNU C Library. Contributed by Ulrich Drepper <drepper@redhat.com>, 2002. @@ -437,26 +437,37 @@ typedef uintmax_t uatomic_max_t; #define atomic_delay() asm ("rep; nop") -#define atomic_and(mem, mask) \ +#define __arch_and_body(lock, mem, mask) \ do { \ if (sizeof (*mem) == 1) \ - __asm __volatile (LOCK_PREFIX "andb %b1, %0" \ + __asm __volatile (lock "andb %b1, %0" \ : "=m" (*mem) \ - : "iq" (mask), "m" (*mem)); \ + : "iq" (mask), "m" (*mem), \ + "i" (offsetof (tcbhead_t, multiple_threads))); \ else if (sizeof (*mem) == 2) \ - __asm __volatile (LOCK_PREFIX "andw %w1, %0" \ + __asm __volatile (lock "andw %w1, %0" \ : "=m" (*mem) \ - : "ir" (mask), "m" (*mem)); \ + : "ir" (mask), "m" (*mem), \ + "i" (offsetof (tcbhead_t, multiple_threads))); \ else if (sizeof (*mem) == 4) \ - __asm __volatile (LOCK_PREFIX "andl %1, %0" \ + __asm __volatile (lock "andl %1, %0" \ : "=m" (*mem) \ - : "ir" (mask), "m" (*mem)); \ + : "ir" (mask), "m" (*mem), \ + "i" (offsetof (tcbhead_t, multiple_threads))); \ else \ - __asm __volatile (LOCK_PREFIX "andq %q1, %0" \ + __asm __volatile (lock "andq %q1, %0" \ : "=m" (*mem) \ - : "ir" (mask), "m" (*mem)); \ + : "ir" (mask), "m" (*mem), \ + "i" (offsetof (tcbhead_t, multiple_threads))); \ } while (0) +#define __arch_cprefix \ + "cmpl $0, %%fs:%P3\n\tje 0f\n\tlock\n0:\t" + +#define atomic_and(mem, mask) __arch_and_body (LOCK_PREFIX, mem, mask) + +#define catomic_and(mem, mask) __arch_and_body (__arch_cprefix, mem, mask) + #define __arch_or_body(lock, mem, mask) \ do { \ @@ -484,7 +495,4 @@ typedef uintmax_t uatomic_max_t; #define atomic_or(mem, mask) __arch_or_body (LOCK_PREFIX, mem, mask) -#define __arch_or_cprefix \ - "cmpl $0, %%fs:%P3\n\tje 0f\n\tlock\n0:\t" - -#define catomic_or(mem, mask) __arch_or_body (__arch_or_cprefix, mem, mask) +#define catomic_or(mem, mask) __arch_or_body (__arch_cprefix, mem, mask) |