1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
/*
* jit-apply-arm.h - Special definitions for ARM function application.
*
* Copyright (C) 2004 Southern Storm Software, Pty Ltd.
*
* This file is part of the libjit library.
*
* The libjit 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 2.1 of
* the License, or (at your option) any later version.
*
* The libjit 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 the libjit library. If not, see
* <http://www.gnu.org/licenses/>.
*/
#ifndef _JIT_APPLY_ARM_H
#define _JIT_APPLY_ARM_H
/*
* The maximum number of bytes that are needed to represent a closure,
* and the alignment to use for the closure.
*/
#define jit_closure_size 128
#define jit_closure_align 16
/*
* The number of bytes that are needed for a redirector stub.
* This includes any extra bytes that are needed for alignment.
*/
#define jit_redirector_size 128
/*
* The number of bytes that are needed for a indirector stub.
* This includes any extra bytes that are needed for alignment.
*/
#define jit_indirector_size 24
/*
* We should pad unused code space with NOP's.
*/
#define jit_should_pad 1
/*
* Defines the alignment for the stack pointer at a public interface.
* As of the "Procedure Call Standard for the ARM Architecture" (AAPCS release 2.07)
* SP mod 8 = 0
* must always be true at every public interface (function calls, etc)
*/
#define JIT_SP_ALIGN_PUBLIC 8
/*
* Redefine jit_builtin_apply in order to correctly align the stack pointer
* to JIT_SP_ALING_PUBLIC bytes before calling __builtin_apply to execute the
* jit-compiled function
*/
#define jit_builtin_apply(func,args,size,return_float,return_buf) \
do { \
register void *sp asm("sp"); \
sp = (void *) (((unsigned) sp) & ~(JIT_SP_ALIGN_PUBLIC - 1)); \
(return_buf) = __builtin_apply \
((void (*)())(func), (args), (size)); \
} while (0)
#endif /* _JIT_APPLY_ARM_H */