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comparison dyncall/dyncall_aggregate.c @ 533:71c884e610f0

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- integration of patches from Raphael Luba, Thekla, Inc.: * integration of aggregate-by-value (struct, union) support patch for x64 (win and sysv) * windows/x64 asm additions to specify how stack unwinds (help for debuggers, exception handling, etc.) * see Changelog for details - new calling convention modes for thiscalls (platform agnostic, was specific before) * new signature character for platform agnostic thiscalls ('*' / DC_SIGCHAR_CC_THISCALL) - dcCallF(), dcVCallF(), dcArgF() and dcVArgF(): * added support for aggregates-by-value (wasn't part of patch) * change that those functions don't implicitly call dcReset() anymore, which was unflexible (breaking change) - added macros to feature test implementation for aggregate-by-value and syscall support - changed libdyncall_s.lib and libdyncallback_s.lib order in callback test makefiles, as some toolchains are picky about order - doc: * man page updates to describe aggregate interface * manual overview changes to highlight platforms with aggregate-by-value support - test/plain: replaced tests w/ old/stale sctruct interface with new aggregate one
author Tassilo Philipp
date Thu, 21 Apr 2022 13:35:47 +0200
parents
children ba70fb631bea
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532:d4bf63ab9164 533:71c884e610f0
1 /*
2
3 Package: dyncall
4 Library: dyncall
5 File: dyncall/dyncall_aggregate.c
6 Description: C interface to compute struct size
7 License:
8
9 Copyright (c) 2021-2022 Tassilo Philipp <tphilipp@potion-studios.com>
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
27 #include "dyncall.h"
28 #include "dyncall_signature.h"
29 #include "dyncall_aggregate.h"
30 #include "dyncall_alloc.h"
31 #include <stdio.h>
32 #include <assert.h>
33 #include <stdarg.h>
34
35
36
37 #if defined(DC__Arch_AMD64) && defined(DC_UNIX)
38 # include "dyncall_aggregate_x64.c"
39 #else
40 static void dcFinishAggr(DCaggr *ag)
41 {
42 }
43 #endif
44
45
46 DCaggr* dcNewAggr(DCsize maxFieldCount, DCsize size)
47 {
48 DCaggr* ag = (DCaggr*)dcAllocMem(sizeof(DCaggr) + maxFieldCount * sizeof(DCfield));
49 ag->n_fields = 0;
50 ag->size = size;
51 return ag;
52 }
53
54
55 void dcAggrField(DCaggr* ag, DCsigchar type, DCint offset, DCsize array_len, ...)
56 {
57 DCfield *f = ag->fields + (ag->n_fields++);
58 f->type = type;
59 f->offset = offset;
60 f->array_len = array_len;
61 f->sub_aggr = NULL;
62 switch(type) {
63 case DC_SIGCHAR_BOOL: f->size = sizeof(DCbool); break;
64 case DC_SIGCHAR_CHAR:
65 case DC_SIGCHAR_UCHAR: f->size = sizeof(DCchar); break;
66 case DC_SIGCHAR_SHORT:
67 case DC_SIGCHAR_USHORT: f->size = sizeof(DCshort); break;
68 case DC_SIGCHAR_INT:
69 case DC_SIGCHAR_UINT: f->size = sizeof(DCint); break;
70 case DC_SIGCHAR_LONG:
71 case DC_SIGCHAR_ULONG: f->size = sizeof(DClong); break;
72 case DC_SIGCHAR_LONGLONG:
73 case DC_SIGCHAR_ULONGLONG: f->size = sizeof(DClonglong); break;
74 case DC_SIGCHAR_FLOAT: f->size = sizeof(DCfloat); break;
75 case DC_SIGCHAR_DOUBLE: f->size = sizeof(DCdouble); break;
76 case DC_SIGCHAR_POINTER:
77 case DC_SIGCHAR_STRING: f->size = sizeof(DCpointer); break;
78 case DC_SIGCHAR_AGGREGATE:
79 {
80 va_list ap;
81 va_start(ap, array_len);
82 f->sub_aggr = va_arg(ap, const DCaggr*);
83 va_end(ap);
84
85 f->size = f->sub_aggr->size;
86 break;
87 }
88 default:
89 assert(0);
90 }
91 }
92
93
94 void dcCloseAggr(DCaggr* ag)
95 {
96 dcFinishAggr(ag);
97 }
98
99
100 void dcFreeAggr(DCaggr* ag)
101 {
102 dcFreeMem(ag);
103 }
104