Xtensa: Correct some compile issues

arch/xtensa/include/xtensa/core.h

@@ -1182,6 +1182,7 @@
 # endif
 90:
 #endif
+	.endm
 
 /* Macro that expands to the body of a function that loads the selected coprocessor's state
  * (registers etc).

arch/xtensa/src/common/xtensa_inthandlers.S

@@ -126,20 +126,6 @@
 	and		a2, a2, a4
 	beqz	a2, 5f						/* Nothing to do */
 
-	/* This bit of code provides a nice debug backtrace in the debugger.
-	 * It does take a few more instructions, so undef XT_DEBUG_BACKTRACE
-	 * if you want to save the cycles.
-	* /
-
-#if XT_DEBUG_BACKTRACE
-#ifndef CONFIG_XTENSA_CALL0_ABI
-	rsr		a0, EPC_1 + \level - 1		/* Return address */
-	movi	a4, 0xC0000000				/* Constant with top 2 bits set (call size) */
-	or		a0, a0, a4					/* Set top 2 bits */
-	addx2	a0, a4, a0					/* Clear top bit -- simulating call4 size	*/
-#endif
-#endif
-
 #ifdef XT_INTEXC_HOOKS
 	/* Call interrupt hook if present to (pre)handle interrupts. */
 

arch/xtensa/src/common/xtensa_nmihandler.S

@@ -59,12 +59,10 @@
 
 #include <nuttx/config.h>
 
-#include <arch/irq.h>
 #include <arch/chip/core-isa.h>
 #include <arch/xtensa/xtensa_specregs.h>
 
 #include "xtensa_macros.h"
-#include "xtensa_timer.h"
 
 /****************************************************************************
  * Assembly Language Macros

arch/xtensa/src/common/xtensa_timer.h

@@ -34,7 +34,7 @@
 #define __ARCH_XTENSA_SRC_COMMON_XTENSA_TIMER_H
 
 #ifdef __ASSEMBLER__
-#  include <xtensa/coreasm.h>
+//#  include <xtensa/coreasm.h>
 #endif
 
 #include <arch/xtensa/core.h>

arch/xtensa/src/esp32/esp32_irq.c

@@ -89,24 +89,6 @@ static void esp32_irq_dump(const char *msg, int irq)
 #  define esp32_irq_dump(msg, irq)
 #endif
 
-/****************************************************************************
- * Name: esp32_nmi
- *
- * Description:
- *   Handlers for various execptions.  None are handled and all are fatal
- *   error conditions.  The only advantage these provided over the default
- *   unexpected interrupt handler is that they provide a diagnostic output.
- *
- ****************************************************************************/
-
-static int esp32_nmi(int irq, FAR void *context)
-{
-  (void)up_irq_save();
-  _err("PANIC!!! NMI received\n");
-  PANIC();
-  return 0;
-}
-
 /****************************************************************************
  * Public Functions
  ****************************************************************************/