Header for the user to include when compiling guest applications that want to communicate with QEMU through backdoor instructions.
Signed-off-by: Lluís Vilanova <vilan...@ac.upc.edu> --- backdoor/guest.h | 36 ++++++++++++++++++++++++++++++++++++ 1 files changed, 36 insertions(+), 0 deletions(-) create mode 100644 backdoor/guest.h diff --git a/backdoor/guest.h b/backdoor/guest.h new file mode 100644 index 0000000..58847e2 --- /dev/null +++ b/backdoor/guest.h @@ -0,0 +1,36 @@ +/* + * Guest-side interface for instruction-based backdoor communication. + * + * Copyright (c) 2010 Lluís Vilanova <vilan...@ac.upc.edu> + * + * This library is free software; you can redistribute it and/or + * modify it under the terms of the GNU Lesser General Public + * License as published by the Free Software Foundation; either + * version 2 of the License, or (at your option) any later version. + * + * This library is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + * Lesser General Public License for more details. + * + * You should have received a copy of the GNU Lesser General Public + * License along with this library; if not, see <http://www.gnu.org/licenses/>. + */ + +#ifndef BACKDOOR_GUEST_H +#define BACKDOOR_GUEST_H + +/* Backdoor macro names define the types of its arguments: + * + * - i8: immediate of 8 bits + * - V: value passed in register + */ + +#error Undefined instruction-based backdoor interface for guest architecture + +#define __str(s) #s +#define __xstr(s) __str(s) + +#define __BACKDOOR_i8(b) asm volatile (".byte " __xstr(b)) + +#endif /* BACKDOOR_GUEST_H */ -- 1.7.1 -- "And it's much the same thing with knowledge, for whenever you learn something new, the whole world becomes that much richer." -- The Princess of Pure Reason, as told by Norton Juster in The Phantom Tollbooth
