xref: /illumos-kvm-cmd/dyngen-exec.h (revision 68396ea9)
1 /*
2  *  dyngen defines for micro operation code
3  *
4  *  Copyright (c) 2003 Fabrice Bellard
5  *
6  * This library is free software; you can redistribute it and/or
7  * modify it under the terms of the GNU Lesser General Public
8  * License as published by the Free Software Foundation; either
9  * version 2 of the License, or (at your option) any later version.
10  *
11  * This library is distributed in the hope that it will be useful,
12  * but WITHOUT ANY WARRANTY; without even the implied warranty of
13  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
14  * Lesser General Public License for more details.
15  *
16  * You should have received a copy of the GNU Lesser General Public
17  * License along with this library; if not, see <http://www.gnu.org/licenses/>.
18  */
19 #if !defined(__DYNGEN_EXEC_H__)
20 #define __DYNGEN_EXEC_H__
21 
22 #include "qemu-common.h"
23 
24 #ifdef __OpenBSD__
25 #include <sys/types.h>
26 #endif
27 
28 /* XXX: This may be wrong for 64-bit ILP32 hosts.  */
29 typedef void * host_reg_t;
30 
31 #if defined(__i386__)
32 #define AREG0 "ebp"
33 #elif defined(__x86_64__)
34 #define AREG0 "r14"
35 #elif defined(_ARCH_PPC)
36 #define AREG0 "r27"
37 #elif defined(__arm__)
38 #define AREG0 "r7"
39 #elif defined(__hppa__)
40 #define AREG0 "r17"
41 #elif defined(__mips__)
42 #define AREG0 "s0"
43 #elif defined(__sparc__)
44 #ifdef CONFIG_SOLARIS
45 #define AREG0 "g2"
46 #else
47 #ifdef __sparc_v9__
48 #define AREG0 "g5"
49 #else
50 #define AREG0 "g6"
51 #endif
52 #endif
53 #elif defined(__s390__)
54 #define AREG0 "r10"
55 #elif defined(__alpha__)
56 /* Note $15 is the frame pointer, so anything in op-i386.c that would
57    require a frame pointer, like alloca, would probably loose.  */
58 #define AREG0 "$15"
59 #elif defined(__mc68000)
60 #define AREG0 "%a5"
61 #elif defined(__ia64__)
62 #define AREG0 "r7"
63 #else
64 #error unsupported CPU
65 #endif
66 
67 #define xglue(x, y) x ## y
68 #define glue(x, y) xglue(x, y)
69 #define stringify(s)	tostring(s)
70 #define tostring(s)	#s
71 
72 /* The return address may point to the start of the next instruction.
73    Subtracting one gets us the call instruction itself.  */
74 #if defined(__s390__) && !defined(__s390x__)
75 # define GETPC() ((void*)(((unsigned long)__builtin_return_address(0) & 0x7fffffffUL) - 1))
76 #elif defined(__arm__)
77 /* Thumb return addresses have the low bit set, so we need to subtract two.
78    This is still safe in ARM mode because instructions are 4 bytes.  */
79 # define GETPC() ((void *)((unsigned long)__builtin_return_address(0) - 2))
80 #else
81 # define GETPC() ((void *)((unsigned long)__builtin_return_address(0) - 1))
82 #endif
83 
84 #endif /* !defined(__DYNGEN_EXEC_H__) */
85