This finishes ALL AVR assembly language

git-svn-id: svn://svn.code.sf.net/p/nuttx/code/trunk@3685 42af7a65-404d-4744-a932-0658087f49c3

2 files changed, 453 insertions, 402 deletions

diff --git a/nuttx/arch/avr/src/at90usb/at90usb_exceptions.S b/nuttx/arch/avr/src/at90usb/at90usb_exceptions.S
index 862ea06ae..8fa931a04 100755
--- a/nuttx/arch/avr/src/at90usb/at90usb_exceptions.S
+++ b/nuttx/arch/avr/src/at90usb/at90usb_exceptions.S
@@ -1,125 +1,176 @@
-/********************************************************************************************

- * arch/avr/src/at90usb/at90usb_exceptions.S

- *

- *   Copyright (C) 2011 Gregory Nutt. All rights reserved.

- *   Author: Gregory Nutt <spudmonkey@racsa.co.cr>

- *

- * Redistribution and use in source and binary forms, with or without

- * modification, are permitted provided that the following conditions

- * are met:

- *

- * 1. Redistributions of source code must retain the above copyright

- *    notice, this list of conditions and the following disclaimer.

- * 2. 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.

- * 3. Neither the name NuttX 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 OF THIS SOFTWARE, EVEN IF ADVISED OF THE

- * POSSIBILITY OF SUCH DAMAGE.

- *

- ********************************************************************************************/

-

-/********************************************************************************************

- * Included Files

- ********************************************************************************************/

-

-#include <nuttx/config.h>

-

-#include <arch/irq.h>

-

-#include "excptmacros.h"

-

-/********************************************************************************************

- * Pre-processor Definitions

- ********************************************************************************************/

-

-/********************************************************************************************

- * External Symbols

- ********************************************************************************************/

-

-	.file	"at90usb_exceptions.S"

-	.global	up_doirq

-

-/********************************************************************************************

- * Macros

- ********************************************************************************************/

-

-/********************************************************************************************

- * Exception Vector Handlers

- ********************************************************************************************/

-

-	.section .handlers, "ax", @progbits

-

-	HANDLER	at90usb_int0, AT90USB_IRQ_INT0, excpt_common		/* External interrupt request 0 */

-	HANDLER	at90usb_int1, AT90USB_IRQ_INT1, excpt_common		/* External interrupt request 1 */

-	HANDLER	at90usb_int2, AT90USB_IRQ_INT2, excpt_common		/* External interrupt request 2 */

-	HANDLER	at90usb_int3, AT90USB_IRQ_INT3, excpt_common		/* External interrupt request 3 */

-	HANDLER	at90usb_int4, AT90USB_IRQ_INT4, excpt_common		/* External interrupt request 4 */

-	HANDLER	at90usb_int5, AT90USB_IRQ_INT5, excpt_common		/* External interrupt request 5 */

-	HANDLER	at90usb_int6, AT90USB_IRQ_INT6, excpt_common		/* External interrupt request 6 */

-	HANDLER	at90usb_int7, AT90USB_IRQ_INT7, excpt_common		/* External interrupt request 7 */

-	HANDLER	at90usb_pcint0, AT90USB_IRQ_PCINT0, excpt_common	/* Pin Change Interrupt Request 0 */

-	HANDLER	at90usb_usbgen, AT90USB_IRQ_USBGEN, excpt_common	/* USB General USB General Interrupt request */

-	HANDLER	at90usb_usbep, AT90USB_IRQ_USBEP, excpt_common		/* USB Endpoint/Pipe USB ENdpoint/Pipe Interrupt request */

-	HANDLER	at90usb_wdt, AT90USB_IRQ_WDT, excpt_common			/* Watchdog Time-out Interrupt */

-	HANDLER	at90usb_t2compa, AT90USB_IRQ_T2COMPA, excpt_common	/* TIMER2 COMPA Timer/Counter2 Compare Match A */

-	HANDLER	at90usb_t2compb, AT90USB_IRQ_T2COMPB, excpt_common	/* TIMER2 COMPA Timer/Counter2 Compare Match B */

-	HANDLER	at90usb_t2ovf, AT90USB_IRQ_T2OVF, excpt_common		/* TIMER2 OVF timer/counter2 overflow */

-	HANDLER	at90usb_t1capt, AT90USB_IRQ_T1CAPT, excpt_common	/* TIMER1 CAPT timer/counter1 capture event */

-	HANDLER	at90usb_t1compa, AT90USB_IRQ_T1COMPA, excpt_common	/* TIMER1 COMPA timer/counter1 compare match A */

-	HANDLER	at90usb_t1compb, AT90USB_IRQ_T1COMPB, excpt_common	/* TIMER1 COMPB timer/counter1 compare match B */

-	HANDLER	at90usb_t1compc, AT90USB_IRQ_T1COMPC, excpt_common	/* TIMER1 COMPC timer/counter1 compare match C */

-	HANDLER	at90usb_t1ovf, AT90USB_IRQ_T1OVF, excpt_common		/* TIMER1 OVF timer/counter1 overflow */

-	HANDLER	at90usb_t0compa, AT90USB_IRQ_T0COMPA, excpt_common	/* TIMER0 COMPA Timer/Counter0 Compare Match A */

-	HANDLER	at90usb_t0compb, AT90USB_IRQ_T0COMPB, excpt_common	/* TIMER0 COMPB Timer/Counter0 Compare Match B */

-	HANDLER	at90usb_t0ovf, AT90USB_IRQ_T0OVF, excpt_common		/* TIMER0 OVF timer/counter0 overflow */

-	HANDLER	at90usb_spi, AT90USB_IRQ_SPI, excpt_common			/* STC SPI serial transfer complete */

-	HANDLER	at90usb_u1rx, AT90USB_IRQ_U1RX, excpt_common		/* USART1 RX complete */

-	HANDLER	at90usb_u1dre, AT90USB_IRQ_U1DRE, excpt_common		/* USART1 data register empty */

-	HANDLER	at90usb_u1tx, AT90USB_IRQ_U1TX, excpt_common		/* USART1 TX complete */

-	HANDLER	at90usb_anacomp, AT90USB_IRQ_ANACOMP, excpt_common	/* ANALOG COMP analog comparator */

-	HANDLER	at90usb_adc, AT90USB_IRQ_ADC, excpt_common			/* ADC conversion complete */

-	HANDLER	at90usb_ee, AT90USB_IRQ_EE, excpt_common			/* EEPROM ready */

-	HANDLER	at90usb_t3capt, AT90USB_IRQ_T3CAPT, excpt_common	/* TIMER3 CAPT timer/counter3 capture event */

-	HANDLER	at90usb_t3compa, AT90USB_IRQ_T3COMPA, excpt_common	/* TIMER3 COMPA timer/counter3 compare match a */

-	HANDLER	at90usb_t3compb, AT90USB_IRQ_T3COMPB, excpt_common	/* TIMER3 COMPB timer/counter3 compare match b */

-	HANDLER	at90usb_t3compc, AT90USB_IRQ_T3COMPC, excpt_common	/* TIMER3 COMPC timer/counter3 compare match c */

-	HANDLER	at90usb_t3ovf, AT90USB_IRQ_T3OVF, excpt_common		/* TIMER3 OVF timer/counter3 overflow */

-	HANDLER	at90usb_twi, AT90USB_IRQ_TWI, excpt_common			/* TWI two-wire serial interface */

-	HANDLER	at90usb_spmrdy, AT90USB_IRQ_SPMRDY, excpt_common	/* Store program memory ready */

-

-/* Common exception handling logic. */

-

-excpt_common:

-#warning "Missing Logic"

-

-/****************************************************************************************************

- *  Name: up_interruptstack

- ****************************************************************************************************/

-

-#if CONFIG_ARCH_INTERRUPTSTACK > 0

-	.bss

-	.align	4

-	.globl	up_interruptstack

-	.type	up_interruptstack, object

-up_interruptstack:

-	.skip	CONFIG_ARCH_INTERRUPTSTACK

-.Lintstackbase:

-	.size	up_interruptstack, .-up_interruptstack

-#endif

-	.end

-

+/********************************************************************************************
+ * arch/avr/src/at90usb/at90usb_exceptions.S
+ *
+ *   Copyright (C) 2011 Gregory Nutt. All rights reserved.
+ *   Author: Gregory Nutt <spudmonkey@racsa.co.cr>
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. 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.
+ * 3. Neither the name NuttX 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 OF THIS SOFTWARE, EVEN IF ADVISED OF THE
+ * POSSIBILITY OF SUCH DAMAGE.
+ *
+ ********************************************************************************************/
+
+/********************************************************************************************
+ * Included Files
+ ********************************************************************************************/
+
+#include <nuttx/config.h>
+
+#include <arch/irq.h>
+
+#include "excptmacros.h"
+
+/********************************************************************************************
+ * Pre-processor Definitions
+ ********************************************************************************************/
+
+/********************************************************************************************
+ * External Symbols
+ ********************************************************************************************/
+
+	.file	"at90usb_exceptions.S"
+	.global	up_doirq
+	.global	up_fullcontextrestore
+
+/********************************************************************************************
+ * Macros
+ ********************************************************************************************/
+
+/********************************************************************************************
+ * Exception Vector Handlers
+ ********************************************************************************************/
+
+	.section .handlers, "ax", @progbits
+
+	HANDLER	at90usb_int0, AT90USB_IRQ_INT0, excpt_common		/* External interrupt request 0 */
+	HANDLER	at90usb_int1, AT90USB_IRQ_INT1, excpt_common		/* External interrupt request 1 */
+	HANDLER	at90usb_int2, AT90USB_IRQ_INT2, excpt_common		/* External interrupt request 2 */
+	HANDLER	at90usb_int3, AT90USB_IRQ_INT3, excpt_common		/* External interrupt request 3 */
+	HANDLER	at90usb_int4, AT90USB_IRQ_INT4, excpt_common		/* External interrupt request 4 */
+	HANDLER	at90usb_int5, AT90USB_IRQ_INT5, excpt_common		/* External interrupt request 5 */
+	HANDLER	at90usb_int6, AT90USB_IRQ_INT6, excpt_common		/* External interrupt request 6 */
+	HANDLER	at90usb_int7, AT90USB_IRQ_INT7, excpt_common		/* External interrupt request 7 */
+	HANDLER	at90usb_pcint0, AT90USB_IRQ_PCINT0, excpt_common	/* Pin Change Interrupt Request 0 */
+	HANDLER	at90usb_usbgen, AT90USB_IRQ_USBGEN, excpt_common	/* USB General USB General Interrupt request */
+	HANDLER	at90usb_usbep, AT90USB_IRQ_USBEP, excpt_common		/* USB Endpoint/Pipe USB ENdpoint/Pipe Interrupt request */
+	HANDLER	at90usb_wdt, AT90USB_IRQ_WDT, excpt_common			/* Watchdog Time-out Interrupt */
+	HANDLER	at90usb_t2compa, AT90USB_IRQ_T2COMPA, excpt_common	/* TIMER2 COMPA Timer/Counter2 Compare Match A */
+	HANDLER	at90usb_t2compb, AT90USB_IRQ_T2COMPB, excpt_common	/* TIMER2 COMPA Timer/Counter2 Compare Match B */
+	HANDLER	at90usb_t2ovf, AT90USB_IRQ_T2OVF, excpt_common		/* TIMER2 OVF timer/counter2 overflow */
+	HANDLER	at90usb_t1capt, AT90USB_IRQ_T1CAPT, excpt_common	/* TIMER1 CAPT timer/counter1 capture event */
+	HANDLER	at90usb_t1compa, AT90USB_IRQ_T1COMPA, excpt_common	/* TIMER1 COMPA timer/counter1 compare match A */
+	HANDLER	at90usb_t1compb, AT90USB_IRQ_T1COMPB, excpt_common	/* TIMER1 COMPB timer/counter1 compare match B */
+	HANDLER	at90usb_t1compc, AT90USB_IRQ_T1COMPC, excpt_common	/* TIMER1 COMPC timer/counter1 compare match C */
+	HANDLER	at90usb_t1ovf, AT90USB_IRQ_T1OVF, excpt_common		/* TIMER1 OVF timer/counter1 overflow */
+	HANDLER	at90usb_t0compa, AT90USB_IRQ_T0COMPA, excpt_common	/* TIMER0 COMPA Timer/Counter0 Compare Match A */
+	HANDLER	at90usb_t0compb, AT90USB_IRQ_T0COMPB, excpt_common	/* TIMER0 COMPB Timer/Counter0 Compare Match B */
+	HANDLER	at90usb_t0ovf, AT90USB_IRQ_T0OVF, excpt_common		/* TIMER0 OVF timer/counter0 overflow */
+	HANDLER	at90usb_spi, AT90USB_IRQ_SPI, excpt_common			/* STC SPI serial transfer complete */
+	HANDLER	at90usb_u1rx, AT90USB_IRQ_U1RX, excpt_common		/* USART1 RX complete */
+	HANDLER	at90usb_u1dre, AT90USB_IRQ_U1DRE, excpt_common		/* USART1 data register empty */
+	HANDLER	at90usb_u1tx, AT90USB_IRQ_U1TX, excpt_common		/* USART1 TX complete */
+	HANDLER	at90usb_anacomp, AT90USB_IRQ_ANACOMP, excpt_common	/* ANALOG COMP analog comparator */
+	HANDLER	at90usb_adc, AT90USB_IRQ_ADC, excpt_common			/* ADC conversion complete */
+	HANDLER	at90usb_ee, AT90USB_IRQ_EE, excpt_common			/* EEPROM ready */
+	HANDLER	at90usb_t3capt, AT90USB_IRQ_T3CAPT, excpt_common	/* TIMER3 CAPT timer/counter3 capture event */
+	HANDLER	at90usb_t3compa, AT90USB_IRQ_T3COMPA, excpt_common	/* TIMER3 COMPA timer/counter3 compare match a */
+	HANDLER	at90usb_t3compb, AT90USB_IRQ_T3COMPB, excpt_common	/* TIMER3 COMPB timer/counter3 compare match b */
+	HANDLER	at90usb_t3compc, AT90USB_IRQ_T3COMPC, excpt_common	/* TIMER3 COMPC timer/counter3 compare match c */
+	HANDLER	at90usb_t3ovf, AT90USB_IRQ_T3OVF, excpt_common		/* TIMER3 OVF timer/counter3 overflow */
+	HANDLER	at90usb_twi, AT90USB_IRQ_TWI, excpt_common			/* TWI two-wire serial interface */
+	HANDLER	at90usb_spmrdy, AT90USB_IRQ_SPMRDY, excpt_common	/* Store program memory ready */
+
+/********************************************************************************************
+ * Name: excpt_common
+ *
+ * Description:
+ *   Exception Vector Handlers
+ *
+ * On Entry:
+ *	The return PC and the saved r24 is on the stack, r24 now contains the IRQ number
+ *
+ *	  PCL
+ *	  PCH
+ *	  R0
+ *	  --- <- SP
+ *
+ ********************************************************************************************/
+
+excpt_common:
+	/* Save the remaining registers on the stack, preserving the IRQ number in r14 */
+
+	EXCPT_PROLOGUE
+
+	/* Call up_doirq with r24 = IRQ number, r22-23 = Pointer to the save structure.  The stack
+	 * pointer currently points to the save structure (or maybe the save struture -1 since
+	 * the push operation post-decrements -- need to REVISIT this).
+	 */
+
+	in		r16, __SP_L__			/* Get the save structure pointer in a Call-saved register pair */
+	in		r17, __SP_H__			/* (Careful, push post-decrements) */
+	movw	r22, r16				/* Pass register save structure as the parameter 2 */
+	USE_INTSTACK rx, ry, rz			/* Switch to the interrupt stack */
+	call	up_doirq				/* Dispatch the interrupt */
+	RESTORE_STACK rx, ry			/* - Undo the operations of USE_INTSTACK */
+
+	/* up_doiq returns with r24-r25 equal to the new save structure.  If no context
+	 * switch occurred, this will be the same as the value passed to it in r22-23.
+	 * But if a context switch occurs, then the returned value will point not at a
+	 * stack frame, but at a register save area inside of the new task's TCB.
+	 */
+
+	 cp		r16, r24
+	 cpc	r17, r25
+	 breq	.Lnoswitch
+
+	/* A context switch has occurred, jump to up_fullcontextrestore with r24, r25
+	 * equal to the address of the new register save ared.
+	 */
+
+	jmp	up_fullcontextrestore
+
+	/* No context switch occurred.. just return off the stack */
+
+.Lnoswitch:
+	EXCPT_EPILOGUE
+	reti
+
+/****************************************************************************************************
+ *  Name: up_interruptstack
+ ****************************************************************************************************/
+
+#if CONFIG_ARCH_INTERRUPTSTACK > 0
+	.bss
+	.align	4
+	.globl	up_interruptstack
+	.type	up_interruptstack, object
+up_interruptstack:
+	.skip	CONFIG_ARCH_INTERRUPTSTACK
+.Lintstackbase:
+	.size	up_interruptstack, .-up_interruptstack
+#endif
+	.end
+
diff --git a/nuttx/arch/avr/src/at90usb/at90usb_head.S b/nuttx/arch/avr/src/at90usb/at90usb_head.S
index 608595f90..a9ec75700 100755
--- a/nuttx/arch/avr/src/at90usb/at90usb_head.S
+++ b/nuttx/arch/avr/src/at90usb/at90usb_head.S
@@ -1,277 +1,277 @@
-/****************************************************************************

- * arch/avr32/src/at90usb/at90usb_head.S

- *

- *   Copyright (C) 2011 Gregory Nutt. All rights reserved.

- *   Author: Gregory Nutt <spudmonkey@racsa.co.cr>

- *

- * Redistribution and use in source and binary forms, with or without

- * modification, are permitted provided that the following conditions

- * are met:

- *

- * 1. Redistributions of source code must retain the above copyright

- *	notice, this list of conditions and the following disclaimer.

- * 2. 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.

- * 3. Neither the name NuttX 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 OF THIS SOFTWARE, EVEN IF ADVISED OF THE

- * POSSIBILITY OF SUCH DAMAGE.

- *

- ****************************************************************************/

-

-/****************************************************************************

- * Included Files

- ****************************************************************************/

-

-#include <nuttx/config.h>

-

-#include <avr/io.h>

-#include <avr/sfr_defs.h>

-

-/****************************************************************************

- * Pre-processor definitions

- ****************************************************************************/

-

-/* Stack is allocated just after .bss and before the heap */

-

-#define STACKBASE (_ebss+CONFIG_IDLETHREAD_STACKSIZE-1)

-

-/* The RAMPZ register is only available for CPUs with more than 64Kb of FLASH.

- * Only the AT90USB646, 647, 1286, and 1287 are supported by this file.

- *

- * - Support for the EPLMX instructions is assumed if RAMPZ is present

- * - If RAMPZ is not present, support for LPMX is assumed

- */

-

-#if defined(CONFIG_ARCH_CHIP_AT90USB1286) || defined(CONFIG_ARCH_CHIP_AT90USB1286)

-#  define HAVE_RAMPZ 1

-#endif

-

-/****************************************************************************

- * External Symbols

- ****************************************************************************/

-

-	.file	"up_nommuhead.S"

-	.global	__start				/* Entry point */

-	.global	_sbss				/* Start of .bss.  Defined by ld.script */

-	.global	_ebss				/* End of .bss.  Defined by ld.script */

-	.global	_sdata				/* Start of .data section in RAM */

-	.global	_edata				/* End of .data section in RAM */

-	.global	_eronly				/* Start of .data section in FLASH */

-	.global	up_lowinit			/* Perform low level initialization */

-	.global	os_start			/* NuttX entry point */

-

-	.global	vectortab

-	.global	at90usb_int0		/* External interrupt request 0 */

-	.global	at90usb_int1		/* External interrupt request 1 */

-	.global	at90usb_int2		/* External interrupt request 2 */

-	.global	at90usb_int3		/* External interrupt request 3 */

-	.global	at90usb_int4		/* External interrupt request 4 */

-	.global	at90usb_int5		/* External interrupt request 5 */

-	.global	at90usb_int6		/* External interrupt request 6 */

-	.global	at90usb_int7		/* External interrupt request 7 */

-	.global	at90usb_pcint0		/* Pin Change Interrupt Request 0 */

-	.global	at90usb_usbgen		/* USB General USB General Interrupt request */

-	.global	at90usb_usbep		/* USB Endpoint/Pipe USB ENdpoint/Pipe Interrupt request */

-	.global	at90usb_wdt			/* Watchdog Time-out Interrupt */

-	.global	at90usb_t2compa		/* TIMER2 COMPA Timer/Counter2 Compare Match A */

-	.global	at90usb_t2compb		/* TIMER2 COMPB Timer/Counter2 Compare Match B */

-	.global	at90usb_t2ovf		/* TIMER2 OVF Timer/Counter2 Overflow */

-	.global	at90usb_t1capt		/* TIMER1 CAPT Timer/Counter1 Capture Event */

-	.global	at90usb_t1compa		/* TIMER1 COMPA Timer/Counter1 Compare Match A */

-	.global	at90usb_t1compb		/* TIMER1 COMPB Timer/Counter1 Compare Match B */

-	.global	at90usb_t1compc		/* TIMER1 COMPC Timer/Counter1 Compare Match c */

-	.global	at90usb_t1ovf		/* TIMER1 OVF Timer/Counter1 Overflow */

-	.global	at90usb_t0compa		/* TIMER0 COMPA Timer/Counter0 Compare Match A */

-	.global	at90usb_t0compb		/* TIMER0 COMPB Timer/Counter0 Compare Match B */

-	.global	at90usb_t0ovf		/* TIMER0 OVF Timer/Counter0 Overflow */

-	.global	at90usb_spi			/* STC SPI Serial Transfer Complete */

-	.global	at90usb_u1rx		/* USART1 Rx Complete */

-	.global	at90usb_u1dre		/* USART1 Data Register Empty */

-	.global	at90usb_u1tx		/* USART1 Tx Complete */

-	.global	at90usb_anacomp		/* ANALOG COMP Analog Comparator */

-	.global	at90usb_adc			/* ADC Conversion Complete */

-	.global	at90usb_ee			/* EEPROM Ready */

-	.global	at90usb_t3capt		/* TIMER3 CAPT Timer/Counter3 Capture Event */

-	.global	at90usb_t3compa		/* TIMER3 COMPA Timer/Counter3 Compare Match A */

-	.global	at90usb_t3compb		/* TIMER3 COMPB Timer/Counter3 Compare Match B */

-	.global	at90usb_t3compc		/* TIMER3 COMPC Timer/Counter3 Compare Match C */

-	.global	at90usb_t3ovf		/* TIMER3 OVF Timer/Counter3 Overflow */

-	.global	at90usb_twi			/* TWI Two-wire Serial Interface */

-	.global	at90usb_spmrdy		/* Store Program Memory Ready */

-

-/****************************************************************************

- * Macros

- ****************************************************************************/

-

-	.macro	vector name

-	jmp		\name

-	.endm

-

-/****************************************************************************

- * Vector Table

- ****************************************************************************/

-

-/* The AT90USB has 38 interrupt vectors including vector 0, the reset

- * vector.

- */

-

-	.section .vectors, "ax", @progbits

-	.func	vectortab

-vectortab:

-	jmp		__start				/*  0: Vector 0 is the reset vector */

-	vector	at90usb_int0		/*  1: External interrupt request 0 */

-	vector	at90usb_int1		/*  2: External interrupt request 1 */

-	vector	at90usb_int2		/*  3: External interrupt request 2 */

-	vector	at90usb_int3		/*  4: External interrupt request 3 */

-	vector	at90usb_int4		/*  5: External interrupt request 4 */

-	vector	at90usb_int5		/*  6: External interrupt request 5 */

-	vector	at90usb_int6		/*  7: External interrupt request 6 */

-	vector	at90usb_int7		/*  8: External interrupt request 7 */

-	vector	at90usb_pcint0		/*  9: PCINT0 Pin Change Interrupt Request 0 */

-	vector	at90usb_usbgen		/* 10: USB General USB General Interrupt request */

-	vector	at90usb_usbep		/* 11: USB Endpoint/Pipe USB ENdpoint/Pipe Interrupt request */

-	vector	at90usb_wdt			/* 12: Watchdog Time-out Interrupt */

-	vector	at90usb_t2compa		/* 13: TIMER2 COMPA Timer/Counter2 Compare Match A */

-	vector	at90usb_t2compb		/* 14: TIMER2 COMPB Timer/Counter2 Compare Match B */

-	vector	at90usb_t2ovf		/* 15: TIMER2 OVF Timer/Counter2 Overflow */

-	vector	at90usb_t1capt		/* 16: TIMER1 CAPT Timer/Counter1 Capture Event */

-	vector	at90usb_t1compa		/* 17: TIMER1 COMPA Timer/Counter1 Compare Match A */

-	vector	at90usb_t1compb		/* 18: TIMER1 COMPB Timer/Counter1 Compare Match B */

-	vector	at90usb_t1compc		/* 19: TIMER1 COMPC Timer/Counter1 Compare Match c */

-	vector	at90usb_t1ovf		/* 20: TIMER1 OVF Timer/Counter1 Overflow */

-	vector	at90usb_t0compa		/* 21: TIMER0 COMPA Timer/Counter0 Compare Match A */

-	vector	at90usb_t0compb		/* 22: TIMER0 COMPB Timer/Counter0 Compare Match B */

-	vector	at90usb_t0ovf		/* 23: TIMER0 OVF Timer/Counter0 Overflow */

-	vector	at90usb_spi			/* 24: STC SPI Serial Transfer Complete */

-	vector	at90usb_u1rx		/* 25: USART1 Rx Complete */

-	vector	at90usb_u1dre		/* 26: USART1 Data Register Empty */

-	vector	at90usb_u1tx		/* 27: USART1 Tx Complete */

-	vector	at90usb_anacomp		/* 28: ANALOG COMP Analog Comparator */

-	vector	at90usb_adc			/* 29: ADC Conversion Complete */

-	vector	at90usb_ee			/* 30: EEPROM Ready */

-	vector	at90usb_t3capt		/* 31: TIMER3 CAPT Timer/Counter3 Capture Event */

-	vector	at90usb_t3compa		/* 32: TIMER3 COMPA Timer/Counter3 Compare Match A */

-	vector	at90usb_t3compb		/* 33: TIMER3 COMPB Timer/Counter3 Compare Match B */

-	vector	at90usb_t3compc		/* 34: TIMER3 COMPC Timer/Counter3 Compare Match C */

-	vector	at90usb_t3ovf		/* 35: TIMER3 OVF Timer/Counter3 Overflow */

-	vector	at90usb_twi			/* 36: TWI Two-wire Serial Interface */

-	vector	at90usb_spmrdy		/* 37: Store Program Memory Ready */

-	.endfunc

-

-/****************************************************************************

- * Reset Entry Point

- ****************************************************************************/

-

-	.section .init, "ax", @progbits

-	.func	__start

-__start:

-

-	/* Clear the zero register, clear the status register and initialize the

-	 * IDLE thread stack

-	 */

-

-	clr		r1

-	out		_SFR_IO_ADDR(SREG), r1

-	ldi		r28, lo8(STACKBASE)

-	ldi		r29, hi8(STACKBASE)

-	out		_SFR_IO_ADDR(SPH), r29

-	out		_SFR_IO_ADDR(SPL), r28

-

-	/* Copy initial global data values from FLASH into RAM */

-

-    .global __do_copy_data;     /* Required to suppress dragging in logic from libgcc */

-__do_copy_data:

-

-#ifdef HAVE_RAMPZ

-	ldi		r17, hi8(_edata)

-	ldi		r26, lo8(_sdata)

-	ldi		r27, hi8(_sdata)

-	ldi		r30, lo8(_eronly)

-	ldi		r31, hi8(_eronly)

-	ldi		r16, hh8(_eronly)

-	out		_SFR_IO_ADDR(RAMPZ), r16

-	rjmp	.Lcopystart

-

-.Lcopyloop:

-	elpm	r0, Z+

-	st		X+, r0

-

-.Lcopystart:

-	cpi		r26, lo8(_edata)

-	cpc		r27, r17

-	brne	.Lcopyloop

-#else

-	ldi		r17, hi8(_edata)

-	ldi		r26, lo8(_sdata)

-	ldi		r27, hi8(_sdata)

-	ldi		r30, lo8(_eronly)

-	ldi		r31, hi8(_eronly)

-	rjmp	.Lcopystart

-

-.Lcopyloop:

-	lpm     r0, Z+

-	st      X+, r0

-.Lcopystart:

-	cpi     r26, lo8(_edata)

-	cpc     r27, r17

-	brne    .Lcopyloop

-#endif

-

-	/* Clear uninitialized data */

-

-    .global __do_clear_bss;     /* Required to suppress dragging in logic from libgcc */

-__do_clear_bss:

-

-	ldi		r17, hi8(_ebss)

-	ldi		r26, lo8(_sbss)

-	ldi		r27, hi8(_sbss)

-	rjmp	.Lclearstart

-

-.Lclearloop:

-	st		X+, r1

-.Lclearstart:

-	cpi		r26, lo8(_ebss)

-	cpc		r27, r17

-	brne	.Lclearloop

-

-	/* Perform any low-level initialization */

-

-	call	up_lowinit

-

-	/* Now start NuttX */

-

-	call	os_start

-	jmp		exit

-	.endfunc

-

-/****************************************************************************

- * Heap Base

- ****************************************************************************/

-

-	/* This global variable is unsigned long g_heapbase and is

-	 * exported from here only because of its coupling to other

-	 * uses of _ebss in this file

-	 */

-

-	.data

-	.globl	g_heapbase

-	.type	g_heapbase, object

-g_heapbase:

-	.word	_ebss+CONFIG_IDLETHREAD_STACKSIZE

-	.size	g_heapbase, .-g_heapbase

-	.end

+/****************************************************************************
+ * arch/avr32/src/at90usb/at90usb_head.S
+ *
+ *   Copyright (C) 2011 Gregory Nutt. All rights reserved.
+ *   Author: Gregory Nutt <spudmonkey@racsa.co.cr>
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * 1. Redistributions of source code must retain the above copyright
+ *	notice, this list of conditions and the following disclaimer.
+ * 2. 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.
+ * 3. Neither the name NuttX 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 OF THIS SOFTWARE, EVEN IF ADVISED OF THE
+ * POSSIBILITY OF SUCH DAMAGE.
+ *
+ ****************************************************************************/
+
+/****************************************************************************
+ * Included Files
+ ****************************************************************************/
+
+#include <nuttx/config.h>
+
+#include <avr/io.h>
+#include <avr/sfr_defs.h>
+
+/****************************************************************************
+ * Pre-processor definitions
+ ****************************************************************************/
+
+/* Stack is allocated just after .bss and before the heap */
+
+#define STACKBASE (_ebss+CONFIG_IDLETHREAD_STACKSIZE-1)
+
+/* The RAMPZ register is only available for CPUs with more than 64Kb of FLASH.
+ * Only the AT90USB646, 647, 1286, and 1287 are supported by this file.
+ *
+ * - Support for the EPLMX instructions is assumed if RAMPZ is present
+ * - If RAMPZ is not present, support for LPMX is assumed
+ */
+
+#if defined(CONFIG_ARCH_CHIP_AT90USB1286) || defined(CONFIG_ARCH_CHIP_AT90USB1286)
+#  define HAVE_RAMPZ 1
+#endif
+
+/****************************************************************************
+ * External Symbols
+ ****************************************************************************/
+
+	.file	"up_nommuhead.S"
+	.global	__start				/* Entry point */
+	.global	_sbss				/* Start of .bss.  Defined by ld.script */
+	.global	_ebss				/* End of .bss.  Defined by ld.script */
+	.global	_sdata				/* Start of .data section in RAM */
+	.global	_edata				/* End of .data section in RAM */
+	.global	_eronly				/* Start of .data section in FLASH */
+	.global	up_lowinit			/* Perform low level initialization */
+	.global	os_start			/* NuttX entry point */
+
+	.global	vectortab
+	.global	at90usb_int0		/* External interrupt request 0 */
+	.global	at90usb_int1		/* External interrupt request 1 */
+	.global	at90usb_int2		/* External interrupt request 2 */
+	.global	at90usb_int3		/* External interrupt request 3 */
+	.global	at90usb_int4		/* External interrupt request 4 */
+	.global	at90usb_int5		/* External interrupt request 5 */
+	.global	at90usb_int6		/* External interrupt request 6 */
+	.global	at90usb_int7		/* External interrupt request 7 */
+	.global	at90usb_pcint0		/* Pin Change Interrupt Request 0 */
+	.global	at90usb_usbgen		/* USB General USB General Interrupt request */
+	.global	at90usb_usbep		/* USB Endpoint/Pipe USB ENdpoint/Pipe Interrupt request */
+	.global	at90usb_wdt			/* Watchdog Time-out Interrupt */
+	.global	at90usb_t2compa		/* TIMER2 COMPA Timer/Counter2 Compare Match A */
+	.global	at90usb_t2compb		/* TIMER2 COMPB Timer/Counter2 Compare Match B */
+	.global	at90usb_t2ovf		/* TIMER2 OVF Timer/Counter2 Overflow */
+	.global	at90usb_t1capt		/* TIMER1 CAPT Timer/Counter1 Capture Event */
+	.global	at90usb_t1compa		/* TIMER1 COMPA Timer/Counter1 Compare Match A */
+	.global	at90usb_t1compb		/* TIMER1 COMPB Timer/Counter1 Compare Match B */
+	.global	at90usb_t1compc		/* TIMER1 COMPC Timer/Counter1 Compare Match c */
+	.global	at90usb_t1ovf		/* TIMER1 OVF Timer/Counter1 Overflow */
+	.global	at90usb_t0compa		/* TIMER0 COMPA Timer/Counter0 Compare Match A */
+	.global	at90usb_t0compb		/* TIMER0 COMPB Timer/Counter0 Compare Match B */
+	.global	at90usb_t0ovf		/* TIMER0 OVF Timer/Counter0 Overflow */
+	.global	at90usb_spi			/* STC SPI Serial Transfer Complete */
+	.global	at90usb_u1rx		/* USART1 Rx Complete */
+	.global	at90usb_u1dre		/* USART1 Data Register Empty */
+	.global	at90usb_u1tx		/* USART1 Tx Complete */
+	.global	at90usb_anacomp		/* ANALOG COMP Analog Comparator */
+	.global	at90usb_adc			/* ADC Conversion Complete */
+	.global	at90usb_ee			/* EEPROM Ready */
+	.global	at90usb_t3capt		/* TIMER3 CAPT Timer/Counter3 Capture Event */
+	.global	at90usb_t3compa		/* TIMER3 COMPA Timer/Counter3 Compare Match A */
+	.global	at90usb_t3compb		/* TIMER3 COMPB Timer/Counter3 Compare Match B */
+	.global	at90usb_t3compc		/* TIMER3 COMPC Timer/Counter3 Compare Match C */
+	.global	at90usb_t3ovf		/* TIMER3 OVF Timer/Counter3 Overflow */
+	.global	at90usb_twi			/* TWI Two-wire Serial Interface */
+	.global	at90usb_spmrdy		/* Store Program Memory Ready */
+
+/****************************************************************************
+ * Macros
+ ****************************************************************************/
+
+	.macro	vector name
+	jmp		\name
+	.endm
+
+/****************************************************************************
+ * Vector Table
+ ****************************************************************************/
+
+/* The AT90USB has 38 interrupt vectors including vector 0, the reset
+ * vector.
+ */
+
+	.section .vectors, "ax", @progbits
+	.func	vectortab
+vectortab:
+	jmp		__start				/*  0: Vector 0 is the reset vector */
+	vector	at90usb_int0		/*  1: External interrupt request 0 */
+	vector	at90usb_int1		/*  2: External interrupt request 1 */
+	vector	at90usb_int2		/*  3: External interrupt request 2 */
+	vector	at90usb_int3		/*  4: External interrupt request 3 */
+	vector	at90usb_int4		/*  5: External interrupt request 4 */
+	vector	at90usb_int5		/*  6: External interrupt request 5 */
+	vector	at90usb_int6		/*  7: External interrupt request 6 */
+	vector	at90usb_int7		/*  8: External interrupt request 7 */
+	vector	at90usb_pcint0		/*  9: PCINT0 Pin Change Interrupt Request 0 */
+	vector	at90usb_usbgen		/* 10: USB General USB General Interrupt request */
+	vector	at90usb_usbep		/* 11: USB Endpoint/Pipe USB ENdpoint/Pipe Interrupt request */
+	vector	at90usb_wdt			/* 12: Watchdog Time-out Interrupt */
+	vector	at90usb_t2compa		/* 13: TIMER2 COMPA Timer/Counter2 Compare Match A */
+	vector	at90usb_t2compb		/* 14: TIMER2 COMPB Timer/Counter2 Compare Match B */
+	vector	at90usb_t2ovf		/* 15: TIMER2 OVF Timer/Counter2 Overflow */
+	vector	at90usb_t1capt		/* 16: TIMER1 CAPT Timer/Counter1 Capture Event */
+	vector	at90usb_t1compa		/* 17: TIMER1 COMPA Timer/Counter1 Compare Match A */
+	vector	at90usb_t1compb		/* 18: TIMER1 COMPB Timer/Counter1 Compare Match B */
+	vector	at90usb_t1compc		/* 19: TIMER1 COMPC Timer/Counter1 Compare Match c */
+	vector	at90usb_t1ovf		/* 20: TIMER1 OVF Timer/Counter1 Overflow */
+	vector	at90usb_t0compa		/* 21: TIMER0 COMPA Timer/Counter0 Compare Match A */
+	vector	at90usb_t0compb		/* 22: TIMER0 COMPB Timer/Counter0 Compare Match B */
+	vector	at90usb_t0ovf		/* 23: TIMER0 OVF Timer/Counter0 Overflow */
+	vector	at90usb_spi			/* 24: STC SPI Serial Transfer Complete */
+	vector	at90usb_u1rx		/* 25: USART1 Rx Complete */
+	vector	at90usb_u1dre		/* 26: USART1 Data Register Empty */
+	vector	at90usb_u1tx		/* 27: USART1 Tx Complete */
+	vector	at90usb_anacomp		/* 28: ANALOG COMP Analog Comparator */
+	vector	at90usb_adc			/* 29: ADC Conversion Complete */
+	vector	at90usb_ee			/* 30: EEPROM Ready */
+	vector	at90usb_t3capt		/* 31: TIMER3 CAPT Timer/Counter3 Capture Event */
+	vector	at90usb_t3compa		/* 32: TIMER3 COMPA Timer/Counter3 Compare Match A */
+	vector	at90usb_t3compb		/* 33: TIMER3 COMPB Timer/Counter3 Compare Match B */
+	vector	at90usb_t3compc		/* 34: TIMER3 COMPC Timer/Counter3 Compare Match C */
+	vector	at90usb_t3ovf		/* 35: TIMER3 OVF Timer/Counter3 Overflow */
+	vector	at90usb_twi			/* 36: TWI Two-wire Serial Interface */
+	vector	at90usb_spmrdy		/* 37: Store Program Memory Ready */
+	.endfunc
+
+/****************************************************************************
+ * Reset Entry Point
+ ****************************************************************************/
+
+	.section .init, "ax", @progbits
+	.func	__start
+__start:
+
+	/* Clear the zero register, clear the status register and initialize the
+	 * IDLE thread stack
+	 */
+
+	clr		r1
+	out		_SFR_IO_ADDR(SREG), r1
+	ldi		r28, lo8(STACKBASE)
+	ldi		r29, hi8(STACKBASE)
+	out		_SFR_IO_ADDR(SPH), r29
+	out		_SFR_IO_ADDR(SPL), r28
+
+	/* Copy initial global data values from FLASH into RAM */
+
+    .global __do_copy_data;     /* Required to suppress dragging in logic from libgcc */
+__do_copy_data:
+
+#ifdef HAVE_RAMPZ
+	ldi		r17, hi8(_edata)
+	ldi		r26, lo8(_sdata)
+	ldi		r27, hi8(_sdata)
+	ldi		r30, lo8(_eronly)
+	ldi		r31, hi8(_eronly)
+	ldi		r16, hh8(_eronly)
+	out		_SFR_IO_ADDR(RAMPZ), r16
+	rjmp	.Lcopystart
+
+.Lcopyloop:
+	elpm	r0, Z+
+	st		X+, r0
+
+.Lcopystart:
+	cpi		r26, lo8(_edata)
+	cpc		r27, r17
+	brne	.Lcopyloop
+#else
+	ldi		r17, hi8(_edata)
+	ldi		r26, lo8(_sdata)
+	ldi		r27, hi8(_sdata)
+	ldi		r30, lo8(_eronly)
+	ldi		r31, hi8(_eronly)
+	rjmp	.Lcopystart
+
+.Lcopyloop:
+	lpm     r0, Z+
+	st      X+, r0
+.Lcopystart:
+	cpi     r26, lo8(_edata)
+	cpc     r27, r17
+	brne    .Lcopyloop
+#endif
+
+	/* Clear uninitialized data */
+
+    .global __do_clear_bss;     /* Required to suppress dragging in logic from libgcc */
+__do_clear_bss:
+
+	ldi		r17, hi8(_ebss)
+	ldi		r26, lo8(_sbss)
+	ldi		r27, hi8(_sbss)
+	rjmp	.Lclearstart
+
+.Lclearloop:
+	st		X+, r1
+.Lclearstart:
+	cpi		r26, lo8(_ebss)
+	cpc		r27, r17
+	brne	.Lclearloop
+
+	/* Perform any low-level initialization */
+
+	call	up_lowinit
+
+	/* Now start NuttX */
+
+	call	os_start
+	jmp		exit
+	.endfunc
+
+/****************************************************************************
+ * Heap Base
+ ****************************************************************************/
+
+	/* This global variable is unsigned long g_heapbase and is
+	 * exported from here only because of its coupling to other
+	 * uses of _ebss in this file
+	 */
+
+	.data
+	.globl	g_heapbase
+	.type	g_heapbase, object
+g_heapbase:
+	.word	_ebss+CONFIG_IDLETHREAD_STACKSIZE
+	.size	g_heapbase, .-g_heapbase
+	.end