70 lines
2.7 KiB
ArmAsm
70 lines
2.7 KiB
ArmAsm
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/****************************************************************************************
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| Description: bootloader C startup source file
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| File Name: cstart.s
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|----------------------------------------------------------------------------------------
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| C O P Y R I G H T
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|----------------------------------------------------------------------------------------
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| Copyright (c) 2012 by Feaser http://www.feaser.com All rights reserved
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|----------------------------------------------------------------------------------------
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| L I C E N S E
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|----------------------------------------------------------------------------------------
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| This file is part of OpenBLT. OpenBLT is free software: you can redistribute it and/or
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| modify it under the terms of the GNU General Public License as published by the Free
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| Software Foundation, either version 3 of the License, or (at your option) any later
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| version.
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| OpenBLT is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY;
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| without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR
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| PURPOSE. See the GNU General Public License for more details.
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| You should have received a copy of the GNU General Public License along with OpenBLT.
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| If not, see <http://www.gnu.org/licenses/>.
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| A special exception to the GPL is included to allow you to distribute a combined work
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| that includes OpenBLT without being obliged to provide the source code for any
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| proprietary components. The exception text is included at the bottom of the license
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| file <license.html>.
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****************************************************************************************/
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MODULE ?cstartup
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; Forward declaration of section.
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SECTION CSTACK:DATA:NOROOT(3)
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PUBLIC reset_handler
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EXTERN __cmain
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EXTERN __vector_table
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EXTWEAK __iar_init_core
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EXTWEAK __iar_init_vfp
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/****************************************************************************************
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** NAME: reset_handler
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** PARAMETER: none
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** RETURN VALUE: none
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** DESCRIPTION: Reset interrupt service routine. Configures the stack, initializes RAM
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** and jumps to function main.
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**
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****************************************************************************************/
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SECTION .text:CODE:REORDER(2)
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THUMB
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reset_handler:
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; Initialize the stack pointer
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LDR R3, =sfe(CSTACK)
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MOV SP, R3
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BL __iar_init_core
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BL __iar_init_vfp
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/* this part makes the difference with function EntryFromProg */
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BL __cmain
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REQUIRE __vector_table
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END
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/************************************ end of cstart.s **********************************/
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