src/arch/i386/include/bochs.h

   1 #ifndef BOCHS_H
   2 #define BOCHS_H
   3
   4 /** @file
   5  *
   6  * bochs breakpoints
   7  *
   8  * This file defines @c bochsbp, the magic breakpoint instruction that
   9  * is incredibly useful when debugging under bochs.  This file should
  10  * never be included in production code.
  11  *
  12  * Use the pseudo-instruction @c bochsbp in assembly code, or the
  13  * bochsbp() function in C code.
  14  *
  15  */
  16
  17 #ifdef ASSEMBLY
  18
  19 /* Breakpoint for when debugging under bochs */
  20 #define bochsbp xchgw %bx, %bx
  21 #define BOCHSBP bochsbp
  22
  23 #else /* ASSEMBLY */
  24
  25 /** Breakpoint for when debugging under bochs */
  26 static inline void bochsbp ( void ) {
  27         __asm__ __volatile__ ( "xchgw %bx, %bx" );
  28 }
  29
  30 #endif /* ASSEMBLY */
  31
  32 #warning "bochs.h should not be included into production code"
  33
  34 #endif /* BOCHS_H */