initial import

tools/sdk/include/esp32/xtensa/xos_regaccess.h

@@ -0,0 +1,201 @@
+
+// xos_regaccess.h - Access routines for various processor special registers.
+
+// Copyright (c) 2003-2015 Cadence Design Systems, Inc.
+//
+// Permission is hereby granted, free of charge, to any person obtaining
+// a copy of this software and associated documentation files (the
+// "Software"), to deal in the Software without restriction, including
+// without limitation the rights to use, copy, modify, merge, publish,
+// distribute, sublicense, and/or sell copies of the Software, and to
+// permit persons to whom the Software is furnished to do so, subject to
+// the following conditions:
+//
+// The above copyright notice and this permission notice shall be included
+// in all copies or substantial portions of the Software.
+//
+// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+// EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+// MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
+// IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY
+// CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
+// TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
+// SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+
+#ifndef __REGACCESS_H__
+#define __REGACCESS_H__
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+#include "xos_types.h"
+
+#include <xtensa/config/core.h>
+
+#if defined (__XCC__)
+#if XCHAL_HAVE_CCOUNT
+#include <xtensa/tie/xt_timer.h>
+#endif
+#endif
+
+
+//-----------------------------------------------------------------------------
+// Read CCOUNT register.
+//-----------------------------------------------------------------------------
+static __inline__ uint32_t xos_get_ccount(void)
+{
+#if XCHAL_HAVE_CCOUNT
+
+#if defined (__XCC__)
+  return XT_RSR_CCOUNT();
+#else
+  uint32_t ccount;
+
+  __asm__ __volatile__ ( "rsr     %0, ccount" : "=a" (ccount) );
+  return ccount;
+#endif
+
+#else
+
+  return 0;
+
+#endif
+}
+
+
+//-----------------------------------------------------------------------------
+// Read CCOMPARE0
+//-----------------------------------------------------------------------------
+static __inline__ uint32_t xos_get_ccompare0(void)
+{
+#if XCHAL_HAVE_CCOUNT
+
+#if defined (__XCC__)
+  return XT_RSR_CCOMPARE0();
+#else
+  uint32_t ccompare0;
+
+  __asm__ __volatile__ ( "rsr     %0, ccompare0" : "=a" (ccompare0));
+  return ccompare0;
+#endif
+
+#else
+
+  return 0;
+
+#endif
+}
+
+
+//-----------------------------------------------------------------------------
+// Read CCOMPARE1
+//-----------------------------------------------------------------------------
+#if (XCHAL_NUM_TIMERS > 1)
+static __inline__ uint32_t xos_get_ccompare1(void)
+{
+#if defined (__XCC__)
+  return XT_RSR_CCOMPARE1();
+#else
+  uint32_t ccompare1;
+
+  __asm__ __volatile__ ( "rsr     %0, ccompare1" : "=a" (ccompare1));
+  return ccompare1;
+#endif
+}
+#endif
+
+
+//-----------------------------------------------------------------------------
+// Read CCOMPARE2
+//-----------------------------------------------------------------------------
+#if (XCHAL_NUM_TIMERS > 2)
+static __inline__ uint32_t xos_get_ccompare2(void)
+{
+#if defined (__XCC__)
+  return XT_RSR_CCOMPARE2();
+#else
+  uint32_t ccompare2;
+
+  __asm__ __volatile__ ( "rsr     %0, ccompare2" : "=a" (ccompare2));
+  return ccompare2;
+#endif
+}
+#endif
+
+
+//-----------------------------------------------------------------------------
+// Write CCOMPARE0
+//-----------------------------------------------------------------------------
+static __inline__ void xos_set_ccompare0(uint32_t val)
+{
+#if XCHAL_HAVE_CCOUNT
+
+#if defined (__XCC__)
+  XT_WSR_CCOMPARE0(val);
+  XT_ISYNC();
+#else
+  __asm__ __volatile__ (
+    "wsr     %0, ccompare0\n"
+    "isync"
+    :
+    : "a" (val)
+  );
+#endif
+
+#else
+
+    // Empty
+
+#endif
+}
+
+
+//-----------------------------------------------------------------------------
+// Write CCOMPARE1
+//-----------------------------------------------------------------------------
+#if (XCHAL_NUM_TIMERS > 1)
+static __inline__ void xos_set_ccompare1(uint32_t val)
+{
+#if defined (__XCC__)
+  XT_WSR_CCOMPARE1(val);
+  XT_ISYNC();
+#else
+  __asm__ __volatile__ (
+    "wsr     %0, ccompare1\n"
+    "isync"
+    :
+    : "a" (val)
+  );
+#endif
+}
+#endif
+
+
+//-----------------------------------------------------------------------------
+// Write CCOMPARE2
+//-----------------------------------------------------------------------------
+#if (XCHAL_NUM_TIMERS > 2)
+static __inline__ void xos_set_ccompare2(uint32_t val)
+{
+#if defined (__XCC__)
+  XT_WSR_CCOMPARE2(val);
+  XT_ISYNC();
+#else
+  __asm__ __volatile__ (
+    "wsr     %0, ccompare2\n"
+    "isync"
+    :
+    : "a" (val)
+  );
+#endif
+}
+#endif
+
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif	// __REGACCESS_H__
+