Archipelago » qemu

/*

 *  dyngen defines for micro operation code

 *

 *  Copyright (c) 2003 Fabrice Bellard

 *

 * 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/>.

 */

#if !defined(__DYNGEN_EXEC_H__)

#define __DYNGEN_EXEC_H__

#if defined(__i386__)

#define AREG0 "ebp"

#elif defined(__x86_64__)

#define AREG0 "r14"

#elif defined(_ARCH_PPC)

#define AREG0 "r27"

#elif defined(__arm__)

#define AREG0 "r7"

#elif defined(__hppa__)

#define AREG0 "r17"

#elif defined(__mips__)

#define AREG0 "s0"

#elif defined(__sparc__)

#ifdef CONFIG_SOLARIS

#define AREG0 "g2"

#else

#ifdef __sparc_v9__

#define AREG0 "g5"

#else

#define AREG0 "g6"

#endif

#endif

#elif defined(__s390__)

#define AREG0 "r10"

#elif defined(__alpha__)

/* Note $15 is the frame pointer, so anything in op-i386.c that would

   require a frame pointer, like alloca, would probably loose.  */

#define AREG0 "$15"

#elif defined(__mc68000)

#define AREG0 "%a5"

#elif defined(__ia64__)

#define AREG0 "r7"

#else

#error unsupported CPU

#endif

register CPUState *env asm(AREG0);

/* The return address may point to the start of the next instruction.

   Subtracting one gets us the call instruction itself.  */

#if defined(__s390__) && !defined(__s390x__)

# define GETPC() ((void*)(((unsigned long)__builtin_return_address(0) & 0x7fffffffUL) - 1))

#elif defined(__arm__)

/* Thumb return addresses have the low bit set, so we need to subtract two.

   This is still safe in ARM mode because instructions are 4 bytes.  */

# define GETPC() ((void *)((unsigned long)__builtin_return_address(0) - 2))

#else

# define GETPC() ((void *)((unsigned long)__builtin_return_address(0) - 1))

#endif

#endif /* !defined(__DYNGEN_EXEC_H__) */