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annotate dyncallback/dyncall_args_sparc32.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 f5577f6bf97a
children 111236b31c75
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1 /*
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2
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3 Package: dyncall
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4 Library: dyncallback
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5 File: dyncallback/dyncall_args_sparc32.c
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6 Description: Callback's Arguments VM - Implementation for sparc32 - not yet
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7 License:
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8
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9 Copyright (c) 2007-2022 Daniel Adler <dadler@uni-goettingen.de>,
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10 Tassilo Philipp <tphilipp@potion-studios.com>
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11
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12 Permission to use, copy, modify, and distribute this software for any
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13 purpose with or without fee is hereby granted, provided that the above
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14 copyright notice and this permission notice appear in all copies.
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16 THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
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17 WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
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18 MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
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19 ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
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20 WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
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21 ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
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22 OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
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23
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24 */
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25
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26
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27 #include "dyncall_args_sparc32.h"
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29 /* Compiler aligns this to 8-byte boundaries, b/c of dword members, a fact needed below */
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30 typedef union {
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31 DCdouble d;
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32 DCulonglong L;
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33 DCulong l[2];
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34 } DCAligned64BitVal_t;
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35
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36 static void* sparc_word(DCArgs* args)
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37 {
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38 return args->arg_ptr++;
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39 }
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40
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41 static void* sparc_dword(DCArgs* args)
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42 {
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43 void *p = args->arg_ptr;
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44 args->arg_ptr += 2;
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45 return p;
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46 }
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47
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48 /* copy words so that dwords are 8-byte aligned, for 64bit value indirection; unaligned
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49 access results in SIGBUS; not quite sure why compiler doesn't abstract this (maybe b/c
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50 of not having any idea about our assembler code?) */
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51 DCulonglong dcbArgULongLong(DCArgs* p) { DCAligned64BitVal_t v; DCulong *l = (DCulong*)sparc_dword(p); v.l[0]=l[0]; v.l[1]=l[1]; return v.L; }
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52 DCdouble dcbArgDouble (DCArgs* p) { DCAligned64BitVal_t v; DCulong *l = (DCulong*)sparc_dword(p); v.l[0]=l[0]; v.l[1]=l[1]; return v.d; }
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53
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54 /* rest of getters based on above functions */
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55 DCuint dcbArgUInt (DCArgs* p) { return *(DCuint*)sparc_word(p); }
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56 DClonglong dcbArgLongLong (DCArgs* p) { return (DClonglong)dcbArgULongLong(p); }
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57 DCint dcbArgInt (DCArgs* p) { return (DCint) dcbArgUInt(p); }
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58 DClong dcbArgLong (DCArgs* p) { return (DClong) dcbArgUInt(p); }
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59 DCulong dcbArgULong (DCArgs* p) { return (DCulong) dcbArgUInt(p); }
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60 DCchar dcbArgChar (DCArgs* p) { return (DCchar) dcbArgUInt(p); }
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61 DCuchar dcbArgUChar (DCArgs* p) { return (DCuchar) dcbArgUInt(p); }
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62 DCshort dcbArgShort (DCArgs* p) { return (DCshort) dcbArgUInt(p); }
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63 DCushort dcbArgUShort (DCArgs* p) { return (DCushort) dcbArgUInt(p); }
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64 DCbool dcbArgBool (DCArgs* p) { return (DCbool) dcbArgUInt(p); }
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65 DCpointer dcbArgPointer (DCArgs* p) { return (DCpointer) dcbArgUInt(p); }
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67 DCfloat dcbArgFloat (DCArgs* p) { return *(DCfloat*) sparc_word(p); }
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69 void dcbArgAggr (DCArgs* p, DCpointer target) { /* @@@AGGR not impl */ }
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70 void dcbReturnAggr (DCArgs *args, DCValue *result, DCpointer ret) { /* @@@AGGR not impl */ }
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