sysenter.h

 
#pragma once
 
#if (!defined TESTING)
 
 
#define __SYSCALL       __attribute__((naked)) __attribute__((noinline))
 
#define ___SVC(no)\
    asm volatile(\
            "SVC %[immediate]\n\t"\
                  "BX LR\n\t" : : [immediate] "I" (no) : "r0")
 
#define __SVC(no, ...) ___SVC(no)
 
#else
 
#define __SYSCALL
 
void __SVC(uint8_t no);
 
#endif