/*-
* BSD LICENSE
- *
- * Copyright(c) 2010-2013 Intel Corporation. All rights reserved.
+ *
+ * Copyright(c) 2010-2014 Intel Corporation. All rights reserved.
* All rights reserved.
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
* are met:
- *
- * * Redistributions of source code must retain the above copyright
+ *
+ * * Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
- * * Redistributions in binary form must reproduce the above copyright
- * notice, this list of conditions and the following disclaimer in
- * the documentation and/or other materials provided with the
+ * * Redistributions in binary form must reproduce the above copyright
+ * notice, this list of conditions and the following disclaimer in
+ * the documentation and/or other materials provided with the
* distribution.
- * * Neither the name of Intel Corporation nor the names of its
- * contributors may be used to endorse or promote products derived
+ * * Neither the name of Intel Corporation nor the names of its
+ * contributors may be used to endorse or promote products derived
* from this software without specific prior written permission.
- *
- * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
- * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
- * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
- * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
- * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
- * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
- * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
- * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
- * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
- * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+ * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+ * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+ * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+ * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+ * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+ * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
- *
*/
/*
_exp.u64 = exp;
_src.u64 = src;
+#ifndef __PIC__
+ asm volatile (
+ MPLOCKED
+ "cmpxchg8b (%[dst]);"
+ "setz %[res];"
+ : [res] "=a" (res) /* result in eax */
+ : [dst] "S" (dst), /* esi */
+ "b" (_src.l32), /* ebx */
+ "c" (_src.h32), /* ecx */
+ "a" (_exp.l32), /* eax */
+ "d" (_exp.h32) /* edx */
+ : "memory" ); /* no-clobber list */
+#else
asm volatile (
+ "mov %%ebx, %%edi\n"
MPLOCKED
"cmpxchg8b (%[dst]);"
"setz %[res];"
+ "xchgl %%ebx, %%edi;\n"
: [res] "=a" (res) /* result in eax */
: [dst] "S" (dst), /* esi */
- "b" (_src.l32), /* ebx */
+ "D" (_src.l32), /* ebx */
"c" (_src.h32), /* ecx */
"a" (_exp.l32), /* eax */
"d" (_exp.h32) /* edx */
: "memory" ); /* no-clobber list */
+#endif
return res;
}
* @param v
* A pointer to the atomic counter.
* @param dec
- * The value to be substracted from the counter.
+ * The value to be subtracted from the counter.
*/
static inline void
rte_atomic64_sub(rte_atomic64_t *v, int64_t dec)
* Subtract a 64-bit value from an atomic counter and return the result.
*
* Atomically subtracts the 64-bit value (dec) from the atomic counter (v)
- * and returns the value of v after the substraction.
+ * and returns the value of v after the subtraction.
*
* @param v
* A pointer to the atomic counter.
* @param dec
- * The value to be substracted from the counter.
+ * The value to be subtracted from the counter.
* @return
- * The value of v after the substraction.
+ * The value of v after the subtraction.
*/
static inline int64_t
rte_atomic64_sub_return(rte_atomic64_t *v, int64_t dec)
* @param v
* A pointer to the atomic counter.
* @return
- * True if the result after substraction is 0; false otherwise.
+ * True if the result after subtraction is 0; false otherwise.
*/
static inline int rte_atomic64_dec_and_test(rte_atomic64_t *v)
{
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