How to modify the pc value

leeen zhang

As the PC is not address mapped(I am not sure,but I can not find the document),I want the program to goto a definit address after some operation have been finished, How can I modify the PC to goto the adress .

over 12 years ago

0 Alberto Chessa over 12 years ago

Mastermind 6670 points

Hi,

Just use a function pointer loaded with the literal addres you want to jump to:

void (*jump)(void) = (void (*)(void)) 0xXXXXXXXX;

jump();

You can define the value in your linker command file, simple add to it:

abs_jump_address = 0xXXXXXX;

An in the C code:

extern far void abs_jump_address(void);

abs_jump_address();

0 leeen zhang over 12 years ago in reply to Alberto Chessa

Prodigy 205 points

many Thanks for your answer, I got it.

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How to modify the pc value