eal: add and use unaligned integer types

[dpdk.git] / lib / librte_eal / common / include / rte_common.h

diff --git a/lib/librte_eal/common/include/rte_common.h b/lib/librte_eal/common/include/rte_common.h
index c0ab8b4..3121314 100644 (file)
--- a/lib/librte_eal/common/include/rte_common.h
+++ b/lib/librte_eal/common/include/rte_common.h
@@ -59,6 +59,16 @@ extern "C" {
 #define asm __asm__
 #endif
 
+#ifdef RTE_ARCH_STRICT_ALIGN
+typedef uint64_t unaligned_uint64_t __attribute__ ((aligned(1)));
+typedef uint32_t unaligned_uint32_t __attribute__ ((aligned(1)));
+typedef uint16_t unaligned_uint16_t __attribute__ ((aligned(1)));
+#else
+typedef uint64_t unaligned_uint64_t;
+typedef uint32_t unaligned_uint32_t;
+typedef uint16_t unaligned_uint16_t;
+#endif
+
 /*********** Macros to eliminate unused variable warnings ********/
 
 /**
@@ -220,8 +230,8 @@ rte_align32pow2(uint32_t x)
 /**
  * Aligns 64b input parameter to the next power of 2
  *
- * @param x
- *   The 64b value to algin
+ * @param v
+ *   The 64b value to align
  *
  * @return
  *   Input parameter aligned to the next power of 2
@@ -291,7 +301,7 @@ rte_pause(void) {}
 static inline uint32_t
 rte_bsf32(uint32_t v)
 {
-       return (__builtin_ctz(v));
+       return __builtin_ctz(v);
 }
 
 #ifndef offsetof
@@ -303,7 +313,7 @@ rte_bsf32(uint32_t v)
 /** Take a macro value and get a string version of it */
 #define RTE_STR(x) _RTE_STR(x)
 
-/** Mask value of type <tp> for the first <ln> bit set. */
+/** Mask value of type "tp" for the first "ln" bit set. */
 #define        RTE_LEN2MASK(ln, tp)    \
        ((tp)((uint64_t)-1 >> (sizeof(uint64_t) * CHAR_BIT - (ln))))