summaryrefslogtreecommitdiff
path: root/sysdeps/x86_64/bits/atomic.h
diff options
context:
space:
mode:
Diffstat (limited to 'sysdeps/x86_64/bits/atomic.h')
-rw-r--r--sysdeps/x86_64/bits/atomic.h334
1 files changed, 244 insertions, 90 deletions
diff --git a/sysdeps/x86_64/bits/atomic.h b/sysdeps/x86_64/bits/atomic.h
index 133a68d192..65d6b02008 100644
--- a/sysdeps/x86_64/bits/atomic.h
+++ b/sysdeps/x86_64/bits/atomic.h
@@ -1,4 +1,4 @@
-/* Copyright (C) 2002, 2003, 2004 Free Software Foundation, Inc.
+/* Copyright (C) 2002, 2003, 2004, 2006 Free Software Foundation, Inc.
This file is part of the GNU C Library.
Contributed by Ulrich Drepper <drepper@redhat.com>, 2002.
@@ -18,6 +18,7 @@
02111-1307 USA. */
#include <stdint.h>
+#include <tls.h> /* For tcbhead_t. */
typedef int8_t atomic8_t;
@@ -80,8 +81,54 @@ typedef uintmax_t uatomic_max_t;
({ __typeof (*mem) ret; \
__asm __volatile (LOCK_PREFIX "cmpxchgq %q2, %1" \
: "=a" (ret), "=m" (*mem) \
- : "r" ((long) (newval)), "m" (*mem), \
- "0" ((long) (oldval))); \
+ : "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))); \
ret; })
@@ -107,49 +154,76 @@ typedef uintmax_t uatomic_max_t;
result; })
-#define atomic_exchange_and_add(mem, value) \
+#define __arch_exchange_and_add_body(lock, mem, value) \
({ __typeof (*mem) result; \
if (sizeof (*mem) == 1) \
- __asm __volatile (LOCK_PREFIX "xaddb %b0, %1" \
+ __asm __volatile (lock "xaddb %b0, %1" \
: "=r" (result), "=m" (*mem) \
- : "0" (value), "m" (*mem)); \
+ : "0" (value), "m" (*mem), \
+ "i" (offsetof (tcbhead_t, multiple_threads))); \
else if (sizeof (*mem) == 2) \
- __asm __volatile (LOCK_PREFIX "xaddw %w0, %1" \
+ __asm __volatile (lock "xaddw %w0, %1" \
: "=r" (result), "=m" (*mem) \
- : "0" (value), "m" (*mem)); \
+ : "0" (value), "m" (*mem), \
+ "i" (offsetof (tcbhead_t, multiple_threads))); \
else if (sizeof (*mem) == 4) \
- __asm __volatile (LOCK_PREFIX "xaddl %0, %1" \
+ __asm __volatile (lock "xaddl %0, %1" \
: "=r" (result), "=m" (*mem) \
- : "0" (value), "m" (*mem)); \
+ : "0" (value), "m" (*mem), \
+ "i" (offsetof (tcbhead_t, multiple_threads))); \
else \
- __asm __volatile (LOCK_PREFIX "xaddq %q0, %1" \
+ __asm __volatile (lock "xaddq %q0, %1" \
: "=r" (result), "=m" (*mem) \
- : "0" ((long) (value)), "m" (*mem)); \
+ : "0" ((long) (value)), "m" (*mem), \
+ "i" (offsetof (tcbhead_t, multiple_threads))); \
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) \
- (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)); \
- })
+ __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)
#define atomic_add_negative(mem, value) \
@@ -194,24 +268,37 @@ typedef uintmax_t uatomic_max_t;
__result; })
-#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 __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_and_test(mem) \
@@ -235,24 +322,37 @@ typedef uintmax_t uatomic_max_t;
__result; })
-#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 __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_and_test(mem) \
@@ -277,27 +377,28 @@ typedef uintmax_t uatomic_max_t;
#define atomic_bit_set(mem, bit) \
- (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))); \
- })
+ 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)
#define atomic_bit_test_set(mem, bit) \
@@ -322,3 +423,56 @@ 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)
generated by cgit v1.2.3 (git 2.39.1) at 2024-04-20 14:11:03 +0000