mirror of https://github.com/ARMmbed/mbed-os.git
102 lines
3.3 KiB
ArmAsm
102 lines
3.3 KiB
ArmAsm
/**************************************************
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*
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* Part two of the system initialization code, contains C-level
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* initialization, thumb-2 only variant.
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*
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* $Revision: 59783 $
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*
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**************************************************/
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/* Copyright 2008-2017, IAR Systems AB.
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This source code is the property of IAR Systems. The source code may only
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be used together with the IAR Embedded Workbench. Redistribution and use
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in source and binary forms, with or without modification, is permitted
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provided that the following conditions are met:
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- Redistributions of source code, in whole or in part, must retain the
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above copyright notice, this list of conditions and the disclaimer below.
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- IAR Systems name may not be used to endorse or promote products
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derived from this software without specific prior written permission.
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THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
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WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
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MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
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ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
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WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
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ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
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OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
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*/
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; --------------------------------------------------
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; Module ?cmain, C-level initialization.
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;
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SECTION SHT$$PREINIT_ARRAY:CONST:NOROOT(2)
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SECTION SHT$$INIT_ARRAY:CONST:NOROOT(2)
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SECTION .text:CODE:NOROOT(2)
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PUBLIC __cmain
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;; Keep ?main for legacy reasons, it is accessed in countless instances of cstartup.s around the world...
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PUBLIC ?main
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EXTWEAK __iar_data_init3
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EXTWEAK __iar_argc_argv
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EXTERN __low_level_init
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EXTERN __call_ctors
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EXTERN main
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EXTERN exit
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EXTERN __iar_dynamic_initialization
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EXTERN mbed_sdk_init
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EXTERN mbed_main
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EXTERN SystemInit
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THUMB
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__cmain:
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?main:
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; Initialize segments.
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; __segment_init and __low_level_init are assumed to use the same
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; instruction set and to be reachable by BL from the ICODE segment
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; (it is safest to link them in segment ICODE).
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FUNCALL __cmain, __low_level_init
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bl __low_level_init
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cmp r0,#0
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beq ?l1
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FUNCALL __cmain, __iar_data_init3
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bl __iar_data_init3
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MOVS r0,#0 ; No parameters
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FUNCALL __cmain, mbed_sdk_init
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BL mbed_sdk_init
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MOVS r0,#0 ; No parameters
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FUNCALL __cmain, __iar_dynamic_initialization
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BL __iar_dynamic_initialization ; C++ dynamic initialization
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?l1:
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REQUIRE ?l3
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SECTION .text:CODE:NOROOT(2)
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PUBLIC _main
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PUBLIC _call_main
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THUMB
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__iar_init$$done: ; Copy initialization is done
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?l3:
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_call_main:
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MOVS r0,#0 ; No parameters
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FUNCALL __cmain, __iar_argc_argv
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BL __iar_argc_argv ; Maybe setup command line
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MOVS r0,#0 ; No parameters
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FUNCALL __cmain, mbed_main
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BL mbed_main
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FUNCALL __cmain, main
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BL main
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_main:
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FUNCALL __cmain, exit
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BL exit
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END
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