diff options
Diffstat (limited to 'firmwares/wifishield/wifi_dnld/src/SOFTWARE_FRAMEWORK/UTILS/STARTUP_FILES')
-rw-r--r-- | firmwares/wifishield/wifi_dnld/src/SOFTWARE_FRAMEWORK/UTILS/STARTUP_FILES/GCC/crt0.x | 121 |
1 files changed, 121 insertions, 0 deletions
diff --git a/firmwares/wifishield/wifi_dnld/src/SOFTWARE_FRAMEWORK/UTILS/STARTUP_FILES/GCC/crt0.x b/firmwares/wifishield/wifi_dnld/src/SOFTWARE_FRAMEWORK/UTILS/STARTUP_FILES/GCC/crt0.x new file mode 100644 index 0000000..23b658b --- /dev/null +++ b/firmwares/wifishield/wifi_dnld/src/SOFTWARE_FRAMEWORK/UTILS/STARTUP_FILES/GCC/crt0.x @@ -0,0 +1,121 @@ +/* This file is part of the ATMEL AVR-UC3-SoftwareFramework-1.7.0 Release */ + +/*This file is prepared for Doxygen automatic documentation generation.*/ +/*! \file ********************************************************************* + * + * \brief AVR32UC C runtime startup file. + * + * This file has been built from the Newlib crt0.S. + * + * - Compiler: GNU GCC for AVR32 + * - Supported devices: All AVR32UC devices can be used. + * + * \author Atmel Corporation: http://www.atmel.com \n + * Support and FAQ: http://support.atmel.no/ + * + ******************************************************************************/ + +/* Copyright (c) 2009 Atmel Corporation. All rights reserved. + * + * 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. The name of Atmel may not be used to endorse or promote products derived + * from this software without specific prior written permission. + * + * 4. This software may only be redistributed and used in connection with an Atmel + * AVR product. + * + * THIS SOFTWARE IS PROVIDED BY ATMEL "AS IS" AND ANY EXPRESS OR IMPLIED + * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF + * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT ARE + * EXPRESSLY AND SPECIFICALLY DISCLAIMED. IN NO EVENT SHALL ATMEL 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 + * + */ + +#include <avr32/io.h> + + +//! @{ +//! \verbatim + + + // This must be linked @ 0x80000000 if it is to be run upon reset. + .section .reset, "ax", @progbits + + + .global _start + .type _start, @function +_start: + // Jump to the C runtime startup routine. + lda.w pc, _stext + + + // _stext is placed outside the .reset section so that the program entry point + // can be changed without affecting the C runtime startup. + .section .text._stext, "ax", @progbits + + + .global _stext + .type _stext, @function +_stext: + // Set initial stack pointer. + lda.w sp, _estack + + // Set up EVBA so interrupts can be enabled. + lda.w r0, _evba + mtsr AVR32_EVBA, r0 + + // Enable the exception processing. + csrf AVR32_SR_EM_OFFSET + + // Load initialized data having a global lifetime from the data LMA. + lda.w r0, _data + lda.w r1, _edata + cp r0, r1 + brhs idata_load_loop_end + lda.w r2, _data_lma +idata_load_loop: + ld.d r4, r2++ + st.d r0++, r4 + cp r0, r1 + brlo idata_load_loop +idata_load_loop_end: + + // Clear uninitialized data having a global lifetime in the blank static storage section. + lda.w r0, __bss_start + lda.w r1, _end + cp r0, r1 + brhs udata_clear_loop_end + mov r2, 0 + mov r3, 0 +udata_clear_loop: + st.d r0++, r2 + cp r0, r1 + brlo udata_clear_loop +udata_clear_loop_end: + +#ifdef CONFIG_FRAME_POINTER + // Safety: Set the default "return" @ to the exit routine address. + lda.w lr, exit +#endif + + // Start the show. + lda.w pc, main + + +//! \endverbatim +//! @} |