diff options
Diffstat (limited to 'sysdeps/x86_64/bits/atomic.h')
| -rw-r--r-- | sysdeps/x86_64/bits/atomic.h | 334 |
1 files changed, 90 insertions, 244 deletions
diff --git a/sysdeps/x86_64/bits/atomic.h b/sysdeps/x86_64/bits/atomic.h index 65d6b02008..133a68d192 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 Free Software Foundation, Inc. +/* Copyright (C) 2002, 2003, 2004 Free Software Foundation, Inc. This file is part of the GNU C Library. Contributed by Ulrich Drepper <drepper@redhat.com>, 2002. @@ -18,7 +18,6 @@ 02111-1307 USA. */ #include <stdint.h> -#include <tls.h> /* For tcbhead_t. */ typedef int8_t atomic8_t; @@ -81,54 +80,8 @@ typedef uintmax_t uatomic_max_t; ({ __typeof (*mem) ret; \ __asm __volatile (LOCK_PREFIX "cmpxchgq %q2, %1" \ : "=a" (ret), "=m" (*mem) \ - : "r" ((long int) (newval)), "m" (*mem), \ - "0" ((long int) (oldval))); \ - ret; }) - - -#define __arch_c_compare_and_exchange_val_8_acq(mem, newval, oldval) \ - ({ __typeof (*mem) ret; \ - __asm __volatile ("cmpl $0, %%fs:%P5\n\t" \ - "je 0f\n\t" \ - "lock\n" \ - "0:\tcmpxchgb %b2, %1" \ - : "=a" (ret), "=m" (*mem) \ - : "q" (newval), "m" (*mem), "0" (oldval), \ - "i" (offsetof (tcbhead_t, multiple_threads))); \ - ret; }) - -#define __arch_c_compare_and_exchange_val_16_acq(mem, newval, oldval) \ - ({ __typeof (*mem) ret; \ - __asm __volatile ("cmpl $0, %%fs:%P5\n\t" \ - "je 0f\n\t" \ - "lock\n" \ - "0:\tcmpxchgw %w2, %1" \ - : "=a" (ret), "=m" (*mem) \ - : "q" (newval), "m" (*mem), "0" (oldval), \ - "i" (offsetof (tcbhead_t, multiple_threads))); \ - ret; }) - -#define __arch_c_compare_and_exchange_val_32_acq(mem, newval, oldval) \ - ({ __typeof (*mem) ret; \ - __asm __volatile ("cmpl $0, %%fs:%P5\n\t" \ - "je 0f\n\t" \ - "lock\n" \ - "0:\tcmpxchgl %2, %1" \ - : "=a" (ret), "=m" (*mem) \ - : "q" (newval), "m" (*mem), "0" (oldval), \ - "i" (offsetof (tcbhead_t, multiple_threads))); \ - ret; }) - -#define __arch_c_compare_and_exchange_val_64_acq(mem, newval, oldval) \ - ({ __typeof (*mem) ret; \ - __asm __volatile ("cmpl $0, %%fs:%P5\n\t" \ - "je 0f\n\t" \ - "lock\n" \ - "0:\tcmpxchgq %q2, %1" \ - : "=a" (ret), "=m" (*mem) \ - : "q" ((long int) (newval)), "m" (*mem), \ - "0" ((long int)oldval), \ - "i" (offsetof (tcbhead_t, multiple_threads))); \ + : "r" ((long) (newval)), "m" (*mem), \ + "0" ((long) (oldval))); \ ret; }) @@ -154,76 +107,49 @@ typedef uintmax_t uatomic_max_t; result; }) -#define __arch_exchange_and_add_body(lock, mem, value) \ +#define atomic_exchange_and_add(mem, value) \ ({ __typeof (*mem) result; \ if (sizeof (*mem) == 1) \ - __asm __volatile (lock "xaddb %b0, %1" \ + __asm __volatile (LOCK_PREFIX "xaddb %b0, %1" \ : "=r" (result), "=m" (*mem) \ - : "0" (value), "m" (*mem), \ - "i" (offsetof (tcbhead_t, multiple_threads))); \ + : "0" (value), "m" (*mem)); \ else if (sizeof (*mem) == 2) \ - __asm __volatile (lock "xaddw %w0, %1" \ + __asm __volatile (LOCK_PREFIX "xaddw %w0, %1" \ : "=r" (result), "=m" (*mem) \ - : "0" (value), "m" (*mem), \ - "i" (offsetof (tcbhead_t, multiple_threads))); \ + : "0" (value), "m" (*mem)); \ else if (sizeof (*mem) == 4) \ - __asm __volatile (lock "xaddl %0, %1" \ + __asm __volatile (LOCK_PREFIX "xaddl %0, %1" \ : "=r" (result), "=m" (*mem) \ - : "0" (value), "m" (*mem), \ - "i" (offsetof (tcbhead_t, multiple_threads))); \ + : "0" (value), "m" (*mem)); \ else \ - __asm __volatile (lock "xaddq %q0, %1" \ + __asm __volatile (LOCK_PREFIX "xaddq %q0, %1" \ : "=r" (result), "=m" (*mem) \ - : "0" ((long) (value)), "m" (*mem), \ - "i" (offsetof (tcbhead_t, multiple_threads))); \ + : "0" ((long) (value)), "m" (*mem)); \ result; }) -#define atomic_exchange_and_add(mem, value) \ - __arch_exchange_and_add_body (LOCK_PREFIX, mem, value) - -#define __arch_exchange_and_add_cprefix \ - "cmpl $0, %%fs:%P4\n\tje 0f\n\tlock\n0:\t" - -#define catomic_exchange_and_add(mem, value) \ - __arch_exchange_and_add_body (__arch_exchange_and_add_cprefix, mem, value) - - -#define __arch_add_body(lock, pfx, mem, value) \ - do { \ - if (__builtin_constant_p (value) && (value) == 1) \ - pfx##_increment (mem); \ - else if (__builtin_constant_p (value) && (value) == -1) \ - pfx##_decrement (mem); \ - else if (sizeof (*mem) == 1) \ - __asm __volatile (lock "addb %b1, %0" \ - : "=m" (*mem) \ - : "ir" (value), "m" (*mem), \ - "i" (offsetof (tcbhead_t, multiple_threads))); \ - else if (sizeof (*mem) == 2) \ - __asm __volatile (lock "addw %w1, %0" \ - : "=m" (*mem) \ - : "ir" (value), "m" (*mem), \ - "i" (offsetof (tcbhead_t, multiple_threads))); \ - else if (sizeof (*mem) == 4) \ - __asm __volatile (lock "addl %1, %0" \ - : "=m" (*mem) \ - : "ir" (value), "m" (*mem), \ - "i" (offsetof (tcbhead_t, multiple_threads))); \ - else \ - __asm __volatile (lock "addq %q1, %0" \ - : "=m" (*mem) \ - : "ir" ((long) (value)), "m" (*mem), \ - "i" (offsetof (tcbhead_t, multiple_threads))); \ - } while (0) #define atomic_add(mem, value) \ - __arch_add_body (LOCK_PREFIX, atomic, mem, value) - -#define __arch_add_cprefix \ - "cmpl $0, %%fs:%P3\n\tje 0f\n\tlock\n0:\t" - -#define catomic_add(mem, value) \ - __arch_add_body (__arch_add_cprefix, catomic, mem, value) + (void) ({ if (__builtin_constant_p (value) && (value) == 1) \ + atomic_increment (mem); \ + else if (__builtin_constant_p (value) && (value) == 1) \ + atomic_decrement (mem); \ + else if (sizeof (*mem) == 1) \ + __asm __volatile (LOCK_PREFIX "addb %b1, %0" \ + : "=m" (*mem) \ + : "ir" (value), "m" (*mem)); \ + else if (sizeof (*mem) == 2) \ + __asm __volatile (LOCK_PREFIX "addw %w1, %0" \ + : "=m" (*mem) \ + : "ir" (value), "m" (*mem)); \ + else if (sizeof (*mem) == 4) \ + __asm __volatile (LOCK_PREFIX "addl %1, %0" \ + : "=m" (*mem) \ + : "ir" (value), "m" (*mem)); \ + else \ + __asm __volatile (LOCK_PREFIX "addq %q1, %0" \ + : "=m" (*mem) \ + : "ir" ((long) (value)), "m" (*mem)); \ + }) #define atomic_add_negative(mem, value) \ @@ -268,37 +194,24 @@ typedef uintmax_t uatomic_max_t; __result; }) -#define __arch_increment_body(lock, mem) \ - do { \ - if (sizeof (*mem) == 1) \ - __asm __volatile (lock "incb %b0" \ - : "=m" (*mem) \ - : "m" (*mem), \ - "i" (offsetof (tcbhead_t, multiple_threads))); \ - else if (sizeof (*mem) == 2) \ - __asm __volatile (lock "incw %w0" \ - : "=m" (*mem) \ - : "m" (*mem), \ - "i" (offsetof (tcbhead_t, multiple_threads))); \ - else if (sizeof (*mem) == 4) \ - __asm __volatile (lock "incl %0" \ - : "=m" (*mem) \ - : "m" (*mem), \ - "i" (offsetof (tcbhead_t, multiple_threads))); \ - else \ - __asm __volatile (lock "incq %q0" \ - : "=m" (*mem) \ - : "m" (*mem), \ - "i" (offsetof (tcbhead_t, multiple_threads))); \ - } while (0) - -#define atomic_increment(mem) __arch_increment_body (LOCK_PREFIX, mem) - -#define __arch_increment_cprefix \ - "cmpl $0, %%fs:%P2\n\tje 0f\n\tlock\n0:\t" - -#define catomic_increment(mem) \ - __arch_increment_body (__arch_increment_cprefix, mem) +#define atomic_increment(mem) \ + (void) ({ if (sizeof (*mem) == 1) \ + __asm __volatile (LOCK_PREFIX "incb %b0" \ + : "=m" (*mem) \ + : "m" (*mem)); \ + else if (sizeof (*mem) == 2) \ + __asm __volatile (LOCK_PREFIX "incw %w0" \ + : "=m" (*mem) \ + : "m" (*mem)); \ + else if (sizeof (*mem) == 4) \ + __asm __volatile (LOCK_PREFIX "incl %0" \ + : "=m" (*mem) \ + : "m" (*mem)); \ + else \ + __asm __volatile (LOCK_PREFIX "incq %q0" \ + : "=m" (*mem) \ + : "m" (*mem)); \ + }) #define atomic_increment_and_test(mem) \ @@ -322,37 +235,24 @@ typedef uintmax_t uatomic_max_t; __result; }) -#define __arch_decrement_body(lock, mem) \ - do { \ - if (sizeof (*mem) == 1) \ - __asm __volatile (lock "decb %b0" \ - : "=m" (*mem) \ - : "m" (*mem), \ - "i" (offsetof (tcbhead_t, multiple_threads))); \ - else if (sizeof (*mem) == 2) \ - __asm __volatile (lock "decw %w0" \ - : "=m" (*mem) \ - : "m" (*mem), \ - "i" (offsetof (tcbhead_t, multiple_threads))); \ - else if (sizeof (*mem) == 4) \ - __asm __volatile (lock "decl %0" \ - : "=m" (*mem) \ - : "m" (*mem), \ - "i" (offsetof (tcbhead_t, multiple_threads))); \ - else \ - __asm __volatile (lock "decq %q0" \ - : "=m" (*mem) \ - : "m" (*mem), \ - "i" (offsetof (tcbhead_t, multiple_threads))); \ - } while (0) - -#define atomic_decrement(mem) __arch_decrement_body (LOCK_PREFIX, mem) - -#define __arch_decrement_cprefix \ - "cmpl $0, %%fs:%P2\n\tje 0f\n\tlock\n0:\t" - -#define catomic_decrement(mem) \ - __arch_decrement_body (__arch_decrement_cprefix, mem) +#define atomic_decrement(mem) \ + (void) ({ if (sizeof (*mem) == 1) \ + __asm __volatile (LOCK_PREFIX "decb %b0" \ + : "=m" (*mem) \ + : "m" (*mem)); \ + else if (sizeof (*mem) == 2) \ + __asm __volatile (LOCK_PREFIX "decw %w0" \ + : "=m" (*mem) \ + : "m" (*mem)); \ + else if (sizeof (*mem) == 4) \ + __asm __volatile (LOCK_PREFIX "decl %0" \ + : "=m" (*mem) \ + : "m" (*mem)); \ + else \ + __asm __volatile (LOCK_PREFIX "decq %q0" \ + : "=m" (*mem) \ + : "m" (*mem)); \ + }) #define atomic_decrement_and_test(mem) \ @@ -377,28 +277,27 @@ typedef uintmax_t uatomic_max_t; #define atomic_bit_set(mem, bit) \ - do { \ - if (sizeof (*mem) == 1) \ - __asm __volatile (LOCK_PREFIX "orb %b2, %0" \ - : "=m" (*mem) \ - : "m" (*mem), "ir" (1L << (bit))); \ - else if (sizeof (*mem) == 2) \ - __asm __volatile (LOCK_PREFIX "orw %w2, %0" \ - : "=m" (*mem) \ - : "m" (*mem), "ir" (1L << (bit))); \ - else if (sizeof (*mem) == 4) \ - __asm __volatile (LOCK_PREFIX "orl %2, %0" \ - : "=m" (*mem) \ - : "m" (*mem), "ir" (1L << (bit))); \ - else if (__builtin_constant_p (bit) && (bit) < 32) \ - __asm __volatile (LOCK_PREFIX "orq %2, %0" \ - : "=m" (*mem) \ - : "m" (*mem), "i" (1L << (bit))); \ - else \ - __asm __volatile (LOCK_PREFIX "orq %q2, %0" \ - : "=m" (*mem) \ - : "m" (*mem), "r" (1UL << (bit))); \ - } while (0) + (void) ({ if (sizeof (*mem) == 1) \ + __asm __volatile (LOCK_PREFIX "orb %b2, %0" \ + : "=m" (*mem) \ + : "m" (*mem), "ir" (1L << (bit))); \ + else if (sizeof (*mem) == 2) \ + __asm __volatile (LOCK_PREFIX "orw %w2, %0" \ + : "=m" (*mem) \ + : "m" (*mem), "ir" (1L << (bit))); \ + else if (sizeof (*mem) == 4) \ + __asm __volatile (LOCK_PREFIX "orl %2, %0" \ + : "=m" (*mem) \ + : "m" (*mem), "ir" (1L << (bit))); \ + else if (__builtin_constant_p (bit) && (bit) < 32) \ + __asm __volatile (LOCK_PREFIX "orq %2, %0" \ + : "=m" (*mem) \ + : "m" (*mem), "i" (1L << (bit))); \ + else \ + __asm __volatile (LOCK_PREFIX "orq %q2, %0" \ + : "=m" (*mem) \ + : "m" (*mem), "r" (1UL << (bit))); \ + }) #define atomic_bit_test_set(mem, bit) \ @@ -423,56 +322,3 @@ typedef uintmax_t uatomic_max_t; #define atomic_delay() asm ("rep; nop") - - -#define atomic_and(mem, mask) \ - do { \ - if (sizeof (*mem) == 1) \ - __asm __volatile (LOCK_PREFIX "andb %1, %b0" \ - : "=m" (*mem) \ - : "ir" (mask), "m" (*mem)); \ - else if (sizeof (*mem) == 2) \ - __asm __volatile (LOCK_PREFIX "andw %1, %w0" \ - : "=m" (*mem) \ - : "ir" (mask), "m" (*mem)); \ - else if (sizeof (*mem) == 4) \ - __asm __volatile (LOCK_PREFIX "andl %1, %0" \ - : "=m" (*mem) \ - : "ir" (mask), "m" (*mem)); \ - else \ - __asm __volatile (LOCK_PREFIX "andq %1, %q0" \ - : "=m" (*mem) \ - : "ir" (mask), "m" (*mem)); \ - } while (0) - - -#define __arch_or_body(lock, mem, mask) \ - do { \ - if (sizeof (*mem) == 1) \ - __asm __volatile (lock "orb %1, %b0" \ - : "=m" (*mem) \ - : "ir" (mask), "m" (*mem), \ - "i" (offsetof (tcbhead_t, multiple_threads))); \ - else if (sizeof (*mem) == 2) \ - __asm __volatile (lock "orw %1, %w0" \ - : "=m" (*mem) \ - : "ir" (mask), "m" (*mem), \ - "i" (offsetof (tcbhead_t, multiple_threads))); \ - else if (sizeof (*mem) == 4) \ - __asm __volatile (lock "orl %1, %0" \ - : "=m" (*mem) \ - : "ir" (mask), "m" (*mem), \ - "i" (offsetof (tcbhead_t, multiple_threads))); \ - else \ - __asm __volatile (lock "orq %1, %q0" \ - : "=m" (*mem) \ - : "ir" (mask), "m" (*mem), \ - "i" (offsetof (tcbhead_t, multiple_threads))); \ - } while (0) - -#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) |