On 11/01/2013, at 11:47 AM, Alex Alexandrov wrote: > Hello, > > Do the GCC C/C++ compilers support supervisor function calls on ARM Cortex M3/4 targets? > I mean something like the IAR's "#pragma _swi" or the "__svc" keyword used by the RealView compiler. > How can I make the compiler use the "svc" machine instruction when calling the function, instead of the regular "branch and link" instruction? Inline assembly and google are your friends: - http://stackoverflow.com/questions/13338314/gcc-arm-ensuring-args-are-retained-when-inlining-functions-with-inline-asm-st - http://stackoverflow.com/questions/11377453/using-gcc-inline-assembly-with-instructions-that-take-immediate-values -- Maxim Kuvyrkov
