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annotate dyncallback/dyncall_args_ppc64.c @ 663:127b569978cc default tip

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- another tweak handling clang trying to be too smart (see last commit)
author Tassilo Philipp
date Sun, 24 Mar 2024 13:52:44 +0100
parents 93ce63d72d59
children
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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_ppc64.c
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6 Description: Callback's Arguments VM - Implementation for ppc64
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7 License:
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8
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9 Copyright (c) 2014-2015 Masanori Mitsugi <mitsugi@linux.vnet.ibm.com>,
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10 2022-2024 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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15
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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 #include "dyncall_args.h"
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27
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28 struct DCArgs
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29 {
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30 long long ireg_data[8];
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31 double freg_data[13];
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32 unsigned char* stackptr;
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33 int ireg_count;
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34 int freg_count;
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35 };
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36
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37 DCint dcbArgInt (DCArgs* p) { return (DCint) dcbArgLongLong(p); }
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38 DCuint dcbArgUInt (DCArgs* p) { return (DCuint) dcbArgLongLong(p); }
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39 DCulonglong dcbArgULongLong(DCArgs* p) { return (DCulonglong) dcbArgLongLong(p); }
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40
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41 DClonglong dcbArgLongLong(DCArgs* p)
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42 {
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43 DClonglong value;
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44 if (p->ireg_count < 8) {
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45 value = p->ireg_data[p->ireg_count++];
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46 } else {
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47 value = *( (long long*) p->stackptr );
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48 }
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49 p->stackptr += sizeof(long long);
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50 return value;
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51 }
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52
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53 DClong dcbArgLong (DCArgs* p) { return (DClong) dcbArgLongLong(p); }
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54 DCulong dcbArgULong (DCArgs* p) { return (DCulong) dcbArgLongLong(p); }
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55 DCchar dcbArgChar (DCArgs* p) { return (DCchar) dcbArgLongLong(p); }
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56 DCuchar dcbArgUChar (DCArgs* p) { return (DCuchar) dcbArgLongLong(p); }
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57 DCshort dcbArgShort (DCArgs* p) { return (DCshort) dcbArgLongLong(p); }
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58 DCushort dcbArgUShort (DCArgs* p) { return (DCushort)dcbArgLongLong(p); }
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59 DCbool dcbArgBool (DCArgs* p) { return (DCbool) dcbArgLongLong(p); }
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60
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61 DCpointer dcbArgPointer (DCArgs* p) { return (DCpointer)dcbArgLongLong(p); }
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62
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63 DCdouble dcbArgDouble (DCArgs* p)
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64 {
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65 DCdouble result;
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66
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67 if (p->freg_count < 13) {
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68 result = p->freg_data[p->freg_count++];
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69 if (p->ireg_count < 8) {
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70 p->ireg_count++;
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71 }
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72 } else {
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73 result = * ( (double*) p->stackptr );
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74 }
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75
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76 p->stackptr += sizeof(double);
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77 return result;
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78 }
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79
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80 DCfloat dcbArgFloat (DCArgs* p)
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81 {
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82 DCfloat result;
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83
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84 #if defined(DC__Endian_BIG)
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85 struct sf { DCfloat f_pad; DCfloat f; } sf;
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86 #else /* Endian_LITTLE */
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87 struct sf { DCfloat f; DCfloat f_pad; } sf;
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88 #endif
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89
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90 if (p->freg_count < 13) {
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91 result = (float)p->freg_data[p->freg_count++];
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92 if (p->ireg_count < 8) {
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93 p->ireg_count++;
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94 }
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95 } else {
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96 sf = * ( (struct sf*) p->stackptr );
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97 result = sf.f;
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98 }
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99
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100 p->stackptr += sizeof(double);
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101 return result;
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102 }
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103
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104 DCpointer dcbArgAggr (DCArgs* p, DCpointer target) { /* @@@AGGR not impl */ return NULL; }
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105 void dcbReturnAggr (DCArgs *args, DCValue *result, DCpointer ret) { /* @@@AGGR not impl */ }
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106