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Asked: 2026-05-26T15:27:53+00:00

I’m building legacy code using the GNUARM C compiler and trying to resolve all

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I’m building legacy code using the GNUARM C compiler and trying to resolve all the implicit declarations of functions.

I’ve come across some ARM specific functions and can’t find the header file containing the declarations for these functions: 

get_pc 
get_cpsr 
get_sp

I have searched the web and only came up with source code containing these functions without any non-standard include files.

I’ll also settle for the function declarations.

Since I will also be porting the code to the Cygwin / Windows platform, what are the equivalent declarations for Cygwin GNU GCC?

Thanks.

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1 Answer

  1. Editorial Team

    Are you sure those are functions? I’m not very familiar with ARM, but those sound like compiler intrinsics to me. If you’re moving to GCC, you might be better off replacing those with inline assembly.

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