From e44e3482bdb4d0ebde2d8b41830ac2cdb07948fb Mon Sep 17 00:00:00 2001 From: Yang Zhang Date: Fri, 28 Aug 2015 09:58:54 +0800 Subject: Add qemu 2.4.0 Change-Id: Ic99cbad4b61f8b127b7dc74d04576c0bcbaaf4f5 Signed-off-by: Yang Zhang --- qemu/roms/ipxe/src/arch/i386/include/bochs.h | 34 ++++++++++++++++++++++++++++ 1 file changed, 34 insertions(+) create mode 100644 qemu/roms/ipxe/src/arch/i386/include/bochs.h (limited to 'qemu/roms/ipxe/src/arch/i386/include/bochs.h') diff --git a/qemu/roms/ipxe/src/arch/i386/include/bochs.h b/qemu/roms/ipxe/src/arch/i386/include/bochs.h new file mode 100644 index 000000000..9d090fc12 --- /dev/null +++ b/qemu/roms/ipxe/src/arch/i386/include/bochs.h @@ -0,0 +1,34 @@ +#ifndef BOCHS_H +#define BOCHS_H + +/** @file + * + * bochs breakpoints + * + * This file defines @c bochsbp, the magic breakpoint instruction that + * is incredibly useful when debugging under bochs. This file should + * never be included in production code. + * + * Use the pseudo-instruction @c bochsbp in assembly code, or the + * bochsbp() function in C code. + * + */ + +#ifdef ASSEMBLY + +/* Breakpoint for when debugging under bochs */ +#define bochsbp xchgw %bx, %bx +#define BOCHSBP bochsbp + +#else /* ASSEMBLY */ + +/** Breakpoint for when debugging under bochs */ +static inline void bochsbp ( void ) { + __asm__ __volatile__ ( "xchgw %bx, %bx" ); +} + +#endif /* ASSEMBLY */ + +#warning "bochs.h should not be included into production code" + +#endif /* BOCHS_H */ -- cgit 1.2.3-korg