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comparison dyncallback/dyncall_args_ppc32_sysv.c @ 0:3e629dc19168

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initial from svn dyncall-1745
author Daniel Adler
date Thu, 19 Mar 2015 22:24:28 +0100
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children f5577f6bf97a
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-1:000000000000 0:3e629dc19168
1 /*
2
3 Package: dyncall
4 Library: dyncallback
5 File: dyncallback/dyncall_args_ppc32_sysv.c
6 Description: Callback's Args Implementation for PowerPC 32-bit System V ABI
7 License:
8
9 Copyright (c) 2015 Daniel Adler <dadler@uni-goettingen.de>
10
11 Permission to use, copy, modify, and distribute this software for any
12 purpose with or without fee is hereby granted, provided that the above
13 copyright notice and this permission notice appear in all copies.
14
15 THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
16 WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
17 MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
18 ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
19 WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
20 ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
21 OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
22
23 */
24
25
26 #include "dyncall_args_ppc32.h"
27
28 DCint dcbArgInt (DCArgs* p)
29 {
30 DCint value;
31 if (p->ireg_count < 8)
32 value = p->ireg_data[p->ireg_count++];
33 else {
34 value = *( (int*) p->stackptr );
35 p->stackptr += sizeof(int);
36 }
37 return value;
38 }
39 DCuint dcbArgUInt (DCArgs* p) { return (DCuint) dcbArgInt(p); }
40
41 DCulonglong dcbArgULongLong (DCArgs* p)
42 {
43 DCulonglong value;
44 if (p->ireg_count < 7)
45 {
46 /* next free integer register is even (r0, r2, r3) ? */
47 /* if not, skip one integer */
48 p->ireg_count = (p->ireg_count + 1) & -2;
49 value = * (unsigned long long*) ( & p->ireg_data[p->ireg_count] );
50 p->ireg_count += 2;
51 } else {
52 p->ireg_count = 8;
53 /* 64-bit values are naturally aligned on stack */
54 p->stackptr = (unsigned char*) ( ( ( (ptrdiff_t) (p->stackptr) ) + 7) & ( (ptrdiff_t) -8 ) );
55 value = * ( (unsigned long long*) p->stackptr );
56 p->stackptr += sizeof(unsigned long long);
57 }
58 return value;
59 }
60 DClonglong dcbArgLongLong(DCArgs* p) { return (DClonglong)dcbArgULongLong(p); }
61
62 DClong dcbArgLong (DCArgs* p) { return (DClong) dcbArgUInt(p); }
63 DCulong dcbArgULong (DCArgs* p) { return (DCulong) dcbArgUInt(p); }
64 DCchar dcbArgChar (DCArgs* p) { return (DCchar) dcbArgUInt(p); }
65 DCuchar dcbArgUChar (DCArgs* p) { return (DCuchar) dcbArgUInt(p); }
66 DCshort dcbArgShort (DCArgs* p) { return (DCshort) dcbArgUInt(p); }
67 DCushort dcbArgUShort (DCArgs* p) { return (DCushort)dcbArgUInt(p); }
68 DCbool dcbArgBool (DCArgs* p) { return (DCbool) dcbArgUInt(p); }
69
70 DCpointer dcbArgPointer (DCArgs* p) { return (DCpointer)dcbArgUInt(p); }
71
72 DCdouble dcbArgDouble (DCArgs* p)
73 {
74 DCdouble result;
75 if (p->freg_count < 8) {
76 result = p->freg_data[p->freg_count++];
77 } else {
78 p->stackptr = (unsigned char*) ( ( ( (ptrdiff_t) (p->stackptr) ) + 7) & ( (ptrdiff_t) -8 ) );
79 result = * ( (double*) p->stackptr );
80 p->stackptr += sizeof(double);
81 }
82 return result;
83 }
84 DCfloat dcbArgFloat (DCArgs* p)
85 {
86 DCfloat result;
87 if (p->freg_count < 8) {
88 result = (DCfloat) p->freg_data[p->freg_count++];
89 } else {
90 result = * ( (float*) p->stackptr );
91 p->stackptr += sizeof(float);
92 }
93 return result;
94 }
95