reset handler

PINKMAN — Thu, 25 Jan 2024 01:14:56 GMT

hello:

i have a question about reset handler.

in the ld file i learnd that the address from 0x00000000 to 0x000000C0 is VECTOR_TABLE, address from 0x00000000 to 0x00000003 is __StackTop,the mcu i used is #S32K116, so the__StackTop is 0x20003800,it is consistent with the .s19 file and map file.

for reset handler ,vector address is 0x00000004,in the .s19 file ,the value is 0x0411,but i find that reset handler address is 0x0410 in the .map file. i want to know why? the same is that NMI_Handler address is 0x046D, but in the .map file,it is 0x046C

Re: reset handler

lukaszadrapa — Thu, 25 Jan 2024 06:23:02 GMT

Hi @PINKMAN

Cortex M4 core supports Thumb instruction set only. The LSB bit in those vectors is used to inform the core that it's Thumb code. See please Generic User Guide for Cortex M4 for more details.

Regards,

Lukas

topic reset handler in S32K

reset handler

Re: reset handler