remove helper dependence on ODP internals

diff --git a/helper/linux.c b/helper/linux.c
index be1ea13..3659be0 100644
--- a/helper/linux.c
+++ b/helper/linux.c
@@ -17,12 +17,10 @@ 
 #include <stdio.h>
 
 #include <odp/helper/linux.h>
-#include <odp_internal.h>
 #include <odp/thread.h>
 #include <odp/init.h>
 #include <odp/system_info.h>
-#include <odp_debug_internal.h>
-
+#include "odph_debug.h"
 
 int odph_linux_cpumask_default(odp_cpumask_t *mask, int num)
 {
@@ -32,7 +30,7 @@  int odph_linux_cpumask_default(odp_cpumask_t *mask, int num)
 	ret = pthread_getaffinity_np(pthread_self(),
 				     sizeof(cpu_set_t), &cpuset);
 	if (ret != 0)
-		ODP_ABORT("failed to read CPU affinity value\n");
+		ODPH_ABORT("failed to read CPU affinity value\n");
 
 	odp_cpumask_zero(mask);
 
@@ -61,16 +59,16 @@  static void *odp_run_start_routine(void *arg)
 
 	/* ODP thread local init */
 	if (odp_init_local()) {
-		ODP_ERR("Local init failed\n");
+		ODPH_ERR("Local init failed\n");
 		return NULL;
 	}
 
 	void *ret_ptr = start_args->start_routine(start_args->arg);
 	int ret = odp_term_local();
 	if (ret < 0)
-		ODP_ERR("Local term failed\n");
+		ODPH_ERR("Local term failed\n");
 	else if (ret == 0 && odp_term_global())
-		ODP_ERR("Global term failed\n");
+		ODPH_ERR("Global term failed\n");
 
 	return ret_ptr;
 }
@@ -95,8 +93,8 @@  int odph_linux_pthread_create(odph_linux_pthread_t *thread_tbl,
 	cpu_count = odp_cpu_count();
 
 	if (num < 1 || num > cpu_count) {
-		ODP_ERR("Invalid number of threads: %d (%d cores available)\n",
-			num, cpu_count);
+		ODPH_ERR("Invalid number of threads: %d (%d cores available)\n",
+			 num, cpu_count);
 		return 0;
 	}
 
@@ -116,7 +114,7 @@  int odph_linux_pthread_create(odph_linux_pthread_t *thread_tbl,
 
 		thread_tbl[i].start_args = malloc(sizeof(odp_start_args_t));
 		if (thread_tbl[i].start_args == NULL)
-			ODP_ABORT("Malloc failed");
+			ODPH_ABORT("Malloc failed");
 
 		thread_tbl[i].start_args->start_routine = start_routine;
 		thread_tbl[i].start_args->arg           = arg;
@@ -124,7 +122,7 @@  int odph_linux_pthread_create(odph_linux_pthread_t *thread_tbl,
 		ret = pthread_create(&thread_tbl[i].thread, &thread_tbl[i].attr,
 			       odp_run_start_routine, thread_tbl[i].start_args);
 		if (ret != 0) {
-			ODP_ERR("Failed to start thread on cpu #%d\n", cpu);
+			ODPH_ERR("Failed to start thread on cpu #%d\n", cpu);
 			free(thread_tbl[i].start_args);
 			break;
 		}
@@ -167,7 +165,7 @@  int odph_linux_process_fork_n(odph_linux_process_t *proc_tbl,
 	cpu_count = odp_cpu_count();
 
 	if (num < 1 || num > cpu_count) {
-		ODP_ERR("Bad num\n");
+		ODPH_ERR("Bad num\n");
 		return -1;
 	}
 
@@ -181,7 +179,7 @@  int odph_linux_process_fork_n(odph_linux_process_t *proc_tbl,
 		pid = fork();
 
 		if (pid < 0) {
-			ODP_ERR("fork() failed\n");
+			ODPH_ERR("fork() failed\n");
 			return -1;
 		}
 
@@ -196,12 +194,12 @@  int odph_linux_process_fork_n(odph_linux_process_t *proc_tbl,
 
 		/* Child process */
 		if (sched_setaffinity(0, sizeof(cpu_set_t), &proc_mask.set)) {
-			ODP_ERR("sched_setaffinity() failed\n");
+			ODPH_ERR("sched_setaffinity() failed\n");
 			return -2;
 		}
 
 		if (odp_init_local()) {
-			ODP_ERR("Local init failed\n");
+			ODPH_ERR("Local init failed\n");
 			return -2;
 		}
 
@@ -232,7 +230,7 @@  int odph_linux_process_wait_n(odph_linux_process_t *proc_tbl, int num)
 		pid = wait(&status);
 
 		if (pid < 0) {
-			ODP_ERR("wait() failed\n");
+			ODPH_ERR("wait() failed\n");
 			return -1;
 		}
 
@@ -244,7 +242,7 @@  int odph_linux_process_wait_n(odph_linux_process_t *proc_tbl, int num)
 		}
 
 		if (j == num) {
-			ODP_ERR("Bad pid\n");
+			ODPH_ERR("Bad pid\n");
 			return -1;
 		}
 	}
diff --git a/helper/odph_debug.h b/helper/odph_debug.h
new file mode 100644
index 0000000..9c216cd
--- /dev/null
+++ b/helper/odph_debug.h
@@ -0,0 +1,93 @@ 
+/* Copyright (c) 2015, Linaro Limited
+ * All rights reserved.
+ *
+ * SPDX-License-Identifier:     BSD-3-Clause
+ */
+/**
+ * @file
+ *
+ * HELPER debug
+ */
+
+#ifndef HELPER_DEBUG_H_
+#define HELPER_DEBUG_H_
+
+#include <stdio.h>
+#include <stdlib.h>
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+#ifndef ODPH_DEBUG_PRINT
+#define ODPH_DEBUG_PRINT 1
+#endif
+
+/**
+ * log level.
+ */
+typedef enum HELPER_log_level {
+	ODPH_LOG_DBG,
+	ODPH_LOG_ERR,
+	ODPH_LOG_ABORT
+} HELPER_log_level_e;
+
+/**
+ * default LOG macro.
+ */
+#define ODPH_LOG(level, fmt, ...) \
+do { \
+	switch (level) { \
+	case ODPH_LOG_ERR: \
+		fprintf(stderr, "%s:%d:%s():" fmt, __FILE__, \
+		__LINE__, __func__, ##__VA_ARGS__); \
+		break; \
+	case ODPH_LOG_DBG: \
+		if (ODPH_DEBUG_PRINT == 1) \
+			fprintf(stderr, "%s:%d:%s():" fmt, __FILE__, \
+			__LINE__, __func__, ##__VA_ARGS__); \
+		break; \
+	case ODPH_LOG_ABORT: \
+		fprintf(stderr, "%s:%d:%s(): " fmt, __FILE__, \
+		__LINE__, __func__, ##__VA_ARGS__); \
+		abort(); \
+		break; \
+	default: \
+		fprintf(stderr, "Unknown LOG level"); \
+		break;\
+	} \
+} while (0)
+
+/**
+ * Debug printing macro, which prints output when DEBUG flag is set.
+ */
+#define ODPH_DBG(fmt, ...) \
+		ODPH_LOG(ODPH_LOG_DBG, fmt, ##__VA_ARGS__)
+
+/**
+ * Print output to stderr (file, line and function).
+ */
+#define ODPH_ERR(fmt, ...) \
+		ODPH_LOG(ODPH_LOG_ERR, fmt, ##__VA_ARGS__)
+
+/**
+ * Print output to stderr (file, line and function),
+ * then abort.
+ */
+#define ODPH_ABORT(fmt, ...) \
+		ODPH_LOG(ODPH_LOG_ABORT, fmt, ##__VA_ARGS__)
+
+/**
+ * @}
+ */
+
+/**
+ * Mark intentionally unused argument for functions
+ */
+#define ODPH_UNUSED     __attribute__((__unused__))
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif
diff --git a/helper/odph_pause.h b/helper/odph_pause.h
new file mode 100644
index 0000000..5618f1f
--- /dev/null
+++ b/helper/odph_pause.h
@@ -0,0 +1,54 @@ 
+/* Copyright (c) 2015, Linaro Limited
+ * All rights reserved.
+ *
+ * SPDX-License-Identifier:     BSD-3-Clause
+ */
+
+#ifndef ODPH_PAUSE_H_
+#define ODPH_PAUSE_H_
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+/**
+ * Spin loop for helper internal use
+ */
+static inline void odph_pause(void)
+{
+#if defined __x86_64__ || defined __i386__
+
+#ifdef __SSE2__
+	__asm__ __volatile__ ("pause");
+#else
+	__asm__ __volatile__ ("rep; nop");
+#endif
+
+#elif defined __arm__
+
+#if __ARM_ARCH == 7
+	__asm__ __volatile__ ("nop");
+	__asm__ __volatile__ ("nop");
+	__asm__ __volatile__ ("nop");
+	__asm__ __volatile__ ("nop");
+#endif
+
+#elif defined __OCTEON__
+
+	__asm__ __volatile__ ("nop");
+	__asm__ __volatile__ ("nop");
+	__asm__ __volatile__ ("nop");
+	__asm__ __volatile__ ("nop");
+	__asm__ __volatile__ ("nop");
+	__asm__ __volatile__ ("nop");
+	__asm__ __volatile__ ("nop");
+	__asm__ __volatile__ ("nop");
+
+#endif
+}
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif
diff --git a/helper/ring.c b/helper/ring.c
index 67fece9..107e47c 100644
--- a/helper/ring.c
+++ b/helper/ring.c
@@ -70,20 +70,20 @@ 
  ***************************************************************************/
 
 #include <odp/shared_memory.h>
-#include <odp_internal.h>
-#include <odp_spin_internal.h>
-#include <odp_align_internal.h>
 #include <odp/spinlock.h>
+#include "odph_pause.h"
 #include <odp/align.h>
 #include <fcntl.h>
 #include <stdio.h>
 #include <string.h>
-#include <odp_debug_internal.h>
+#include "odph_debug.h"
 #include <odp/rwlock.h>
 #include <odp/helper/ring.h>
 
 static TAILQ_HEAD(, odph_ring) odp_ring_list;
 
+#define RING_VAL_IS_POWER_2(x) ((((x) - 1) & (x)) == 0)
+
 /*
  * the enqueue of pointers on the ring.
  */
@@ -161,9 +161,10 @@  odph_ring_create(const char *name, unsigned count, unsigned flags)
 	odp_shm_t shm;
 
 	/* count must be a power of 2 */
-	if (!ODP_VAL_IS_POWER_2(count) || (count > ODPH_RING_SZ_MASK)) {
-		ODP_ERR("Requested size is invalid, must be power of 2, and  do not exceed the size limit %u\n",
-			ODPH_RING_SZ_MASK);
+	if (!RING_VAL_IS_POWER_2(count) || (count > ODPH_RING_SZ_MASK)) {
+		ODPH_ERR("Requested size is invalid, must be power of 2,"
+			 "and do not exceed the size limit %u\n",
+			 ODPH_RING_SZ_MASK);
 		return NULL;
 	}
 
@@ -194,7 +195,7 @@  odph_ring_create(const char *name, unsigned count, unsigned flags)
 
 		TAILQ_INSERT_TAIL(&odp_ring_list, r, next);
 	} else {
-		ODP_ERR("Cannot reserve memory\n");
+		ODPH_ERR("Cannot reserve memory\n");
 	}
 
 	odp_rwlock_write_unlock(&qlock);
@@ -283,7 +284,7 @@  int __odph_ring_mp_do_enqueue(odph_ring_t *r, void * const *obj_table,
 	 * we need to wait for them to complete
 	 */
 	while (odp_unlikely(r->prod.tail != prod_head))
-		odp_spin();
+		odph_pause();
 
 	/* Release our entries and the memory they refer to */
 	__atomic_thread_fence(__ATOMIC_RELEASE);
@@ -400,7 +401,7 @@  int __odph_ring_mc_do_dequeue(odph_ring_t *r, void **obj_table,
 	 * we need to wait for them to complete
 	 */
 	while (odp_unlikely(r->cons.tail != cons_head))
-		odp_spin();
+		odph_pause();
 
 	/* Release our entries and the memory they refer to */
 	__atomic_thread_fence(__ATOMIC_RELEASE);
@@ -532,19 +533,19 @@  unsigned odph_ring_free_count(const odph_ring_t *r)
 /* dump the status of the ring on the console */
 void odph_ring_dump(const odph_ring_t *r)
 {
-	ODP_DBG("ring <%s>@%p\n", r->name, r);
-	ODP_DBG("  flags=%x\n", r->flags);
-	ODP_DBG("  size=%"PRIu32"\n", r->prod.size);
-	ODP_DBG("  ct=%"PRIu32"\n", r->cons.tail);
-	ODP_DBG("  ch=%"PRIu32"\n", r->cons.head);
-	ODP_DBG("  pt=%"PRIu32"\n", r->prod.tail);
-	ODP_DBG("  ph=%"PRIu32"\n", r->prod.head);
-	ODP_DBG("  used=%u\n", odph_ring_count(r));
-	ODP_DBG("  avail=%u\n", odph_ring_free_count(r));
+	ODPH_DBG("ring <%s>@%p\n", r->name, r);
+	ODPH_DBG("  flags=%x\n", r->flags);
+	ODPH_DBG("  size=%" PRIu32 "\n", r->prod.size);
+	ODPH_DBG("  ct=%" PRIu32 "\n", r->cons.tail);
+	ODPH_DBG("  ch=%" PRIu32 "\n", r->cons.head);
+	ODPH_DBG("  pt=%" PRIu32 "\n", r->prod.tail);
+	ODPH_DBG("  ph=%" PRIu32 "\n", r->prod.head);
+	ODPH_DBG("  used=%u\n", odph_ring_count(r));
+	ODPH_DBG("  avail=%u\n", odph_ring_free_count(r));
 	if (r->prod.watermark == r->prod.size)
-		ODP_DBG("  watermark=0\n");
+		ODPH_DBG("  watermark=0\n");
 	else
-		ODP_DBG("  watermark=%"PRIu32"\n", r->prod.watermark);
+		ODPH_DBG("  watermark=%" PRIu32 "\n", r->prod.watermark);
 }
 
 /* dump the status of all rings on the console */
diff --git a/platform/linux-generic/Makefile.am b/platform/linux-generic/Makefile.am
index b8f93c7..4f2063f 100644
--- a/platform/linux-generic/Makefile.am
+++ b/platform/linux-generic/Makefile.am
@@ -137,7 +137,9 @@  subdirheaders_HEADERS = \
 			$(top_srcdir)/helper/include/odp/helper/linux.h \
 			$(top_srcdir)/helper/include/odp/helper/ring.h \
 			$(top_srcdir)/helper/include/odp/helper/tcp.h \
-			$(top_srcdir)/helper/include/odp/helper/udp.h
+			$(top_srcdir)/helper/include/odp/helper/udp.h \
+			$(top_srcdir)/helper/odph_debug.h \
+			$(top_srcdir)/helper/odph_pause.h
 
 __LIB__libodp_la_SOURCES = \
 			   odp_barrier.c \