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authorpatacongo <patacongo@42af7a65-404d-4744-a932-0658087f49c3>2011-06-08 23:30:39 +0000
committerpatacongo <patacongo@42af7a65-404d-4744-a932-0658087f49c3>2011-06-08 23:30:39 +0000
commit19b8bf8f79b7f678e2d2c473bf07ecb1add9fb42 (patch)
tree243a21828280bdd27b32f5252f5a19e4eecc5249 /nuttx/arch/avr/src/at90usb/at90usb_head.S
parentfe2959c7e6d314cc44cf5472d20b8ac6d5806b51 (diff)
downloadpx4-nuttx-19b8bf8f79b7f678e2d2c473bf07ecb1add9fb42.tar.gz
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This finishes ALL AVR assembly language
git-svn-id: svn://svn.code.sf.net/p/nuttx/code/trunk@3685 42af7a65-404d-4744-a932-0658087f49c3
Diffstat (limited to 'nuttx/arch/avr/src/at90usb/at90usb_head.S')
-rwxr-xr-xnuttx/arch/avr/src/at90usb/at90usb_head.S554
1 files changed, 277 insertions, 277 deletions
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