Run the main function directly by set the pc register to the main function addr

[XinyuKhan]

I don't know if this feature is supported. Sometimes I need the debugger to bypass the bootloader and run the main function directly but not just wait the breakpoint, because the downloading operation usually broken the check mechanism in the bootloader or the bootloader may just not exist.

[haneefdm]

Yes, people do that. But you better know your processor, the gdb-server (JLink, openocd, etc.), etc.

There are all kinds of override...s available in launch.json.

See https://github.com/Marus/cortex-debug/blob/master/debug_attributes.md

[XinyuKhan]

Thx for the rely. I'll do more research

[XinyuKhan]

Yes, people do that. But you better know your processor, the gdb-server (JLink, openocd, etc.), etc.

There are all kinds of override...s available in launch.json.

See https://github.com/Marus/cortex-debug/blob/master/debug_attributes.md

I can set PC reg by override the pre launch command, but as know I have to set the main address to the command manually, Is there any way that can automatically get the address of the main entry and set it to the pc reg? If there is not, is it possible to add such feature in the future? The stm32cubeide support this feature accroding its log.

[haneefdm]

is there any way that can automatically get the address of the main entry

Probably. You also have to be a gdb expert. Try one of the following

set $pc = main
set $pc = &main

in your overrideLaunchCommands. Don't do it in 'preLaunc..."

Note that for most ARM processors, you also have to set $sp and $lr, or your stack will be bogus. $lr should be -1

It will help if you read our Wiki https://github.com/Marus/cortex-debug/wiki/Cortex-Debug:-Under-the-hood to see in detail our startup sequence.

[selectstriker2]

Rather than jumping straight to main, you might be better off jumping to your reset vector (which is likely what your bootloader is doing anyways), which should be the first address in the image, something like __reset_handler. That will set up your stack pointer(s) and link register, initialize .bss region to 0, copy any read only data to RAM, etc. before entering main()

[XinyuKhan]

is there any way that can automatically get the address of the main entry

Probably. You also have to be a gdb expert. Try one of the following

set $pc = main
set $pc = &main

in your overrideLaunchCommands. Don't do it in 'preLaunc..."

Note that for most ARM processors, you also have to set $sp and $lr, or your stack will be bogus. $lr should be -1

It will help if you read our Wiki https://github.com/Marus/cortex-debug/wiki/Cortex-Debug:-Under-the-hood to see in detail our startup sequence.

Great! I will try your sugestion latter. Thank you so mush for your reply!

[haneefdm]

Yes, what @selectstriker2 is far better, but I don't know your situation. If you don't jump to your reset handler, your C-runtime will not be initialized either.