Warning[25]: Label 'Reset_Handler' is defined pubweak in a section implicitly declared root

以下是IAR官网的解释以及解决办法

Technical Note 30605 Warning[25]: Label 'xxxxx' is defined pubweak in a section implicitly declared root EW targets: ARM, STM8 EW component: Assembler Keywords: assembly Last update: January 12, 2015 Problem After upgrading to... EWARM 7.10.1 EWSTM8 2.10.1 ...the Warning[25] is issued during assembly of a file that assembled without warning on earlier version of the Embedded Workbench. Solution To avoid the warning, add ":NOROOT" to the "SECTION" control directive. Add the ":NOROOT" to the left of the ()-part of the line. PUBWEAK NMI_Handler SECTION .text:CODE:REORDER:NOROOT(1) NMI_Handler Background The assembler is issuing Warning[25] for a deprecated assembler construction. The deprecated assembler source construction looks like this: PUBWEAK NMI_Handler SECTION .text:CODE:REORDER(1) NMI_Handler Details The assembler control directive of "SECTION" consists of: SECTION section :type [:flag] [(align)] The change is only to be made among the flag items. I.e. don't change the"SECTION" , "section" , ":type" nor the "[(align)]" parts of the line. (For example if the alignment is expressed as (2) then keep it at (2). (The (2) stands for an alignment of 4 bytes, as the (2) is the power of two to which the address should be aligned.)) The "[:flag]"-part can have these flags: ROOT (the default mode) or NOROOT and REORDER or NOREORDER (the default mode) Where now the Warning from the Assembler shows that the "explicit noroot", due to the directive "PUBWEAK", mismatch the default mode, which gives an "implied root" So the "explicit noroot", from "PUBWEAK", should be matched with the flag"NOROOT". The details for the assembler control directive of "SECTION" can be found in the chapter "Section control directives" in the "IAR Assembler™ Reference Guide." All product names are trademarks or registered trademarks of their respective owners.