Mercurial > pub > dyncall > dyncall
annotate dyncallback/dyncall_args_mips_o32.c @ 149:c12120a1fbc0
- make cmake based builds work on systems without a C++ compiler (thanks Franklin Mathieu)
author | cslag |
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date | Sat, 17 Sep 2016 14:10:53 +0200 |
parents | f0437f85091b |
children | f5577f6bf97a |
rev | line source |
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102
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1 /* |
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2 |
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3 Package: dyncall |
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4 Library: dyncallback |
118 | 5 File: dyncallback/dyncall_args_mips_o32.c |
109 | 6 Description: Callback's Arguments VM - Implementation for MIPS o32 |
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7 License: |
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8 |
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9 Copyright (c) 2013-2015 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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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 |
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27 #include "dyncall_args_mips.h" |
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28 |
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29 DCint dcbArgInt(DCArgs* p) |
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30 { |
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31 DCint value; |
110 | 32 p->freg_count = 2; /* first int will disable float reg use. */ |
102
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33 value = *((int*)p->stackptr); |
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34 p->stackptr += sizeof(int); |
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35 return value; |
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36 } |
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37 DCuint dcbArgUInt(DCArgs* p) { return (DCuint)dcbArgInt(p); } |
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38 |
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39 DCulonglong dcbArgULongLong(DCArgs* p) |
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40 { |
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41 DCulonglong value; |
110 | 42 p->stackptr += ((int)p->stackptr & 4); /* Skip one slot if not aligned. */ |
102
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43 #if defined(DC__Endian_LITTLE) |
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44 value = dcbArgUInt(p); |
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45 value |= ((DCulonglong)dcbArgUInt(p)) << 32; |
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46 #else |
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47 value = ((DCulonglong)dcbArgUInt(p)) << 32; |
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48 value |= dcbArgUInt(p); |
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49 #endif |
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50 return value; |
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51 } |
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52 DClonglong dcbArgLongLong(DCArgs* p) { return (DClonglong)dcbArgULongLong(p); } |
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53 |
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54 DClong dcbArgLong (DCArgs* p) { return (DClong) dcbArgUInt(p); } |
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55 DCulong dcbArgULong (DCArgs* p) { return (DCulong) dcbArgUInt(p); } |
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56 DCchar dcbArgChar (DCArgs* p) { return (DCchar) dcbArgUInt(p); } |
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57 DCuchar dcbArgUChar (DCArgs* p) { return (DCuchar) dcbArgUInt(p); } |
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58 DCshort dcbArgShort (DCArgs* p) { return (DCshort) dcbArgUInt(p); } |
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59 DCushort dcbArgUShort (DCArgs* p) { return (DCushort) dcbArgUInt(p); } |
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60 DCbool dcbArgBool (DCArgs* p) { return (DCbool) dcbArgUInt(p); } |
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61 DCpointer dcbArgPointer(DCArgs* p) { return (DCpointer)dcbArgUInt(p); } |
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62 |
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63 DCfloat dcbArgFloat(DCArgs* p) |
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64 { |
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65 DCfloat result; |
104
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66 if(p->freg_count < 2) { |
110 | 67 /* Stored float regs (max 2) are always 8b aligned. The way we look them up, */ |
68 /* relative to a diverging p->stackptr, we need consider this. Only works */ | |
69 /* with up to two float args, which is all we need. Hacky, but saves us */ | |
70 /* from one more variable and more bookkeeping in DCArgs. */ | |
71 result = ((DCfloat*)(p->stackptr + ((int)p->stackptr & 4)) - 4) /* '-4' b/c those regs are stored right before the args */ | |
104
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72 #if defined(DC__Endian_LITTLE) |
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73 [0]; |
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74 #else |
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75 [1]; |
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76 #endif |
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77 ++p->freg_count; |
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78 } else { |
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79 result = *((DCfloat*)p->stackptr); |
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80 } |
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81 p->stackptr += sizeof(DCfloat); |
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82 return result; |
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83 } |
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84 DCdouble dcbArgDouble(DCArgs* p) |
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85 { |
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86 union { |
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87 DCdouble result; |
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88 DCfloat f[2]; |
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89 } d; |
110 | 90 p->stackptr += ((int)p->stackptr & 4); /* Skip one slot if not aligned. */ |
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91 if(p->freg_count < 2) { |
110 | 92 /*result = *((DCdouble*)p->stackptr-2); this changes the value, slightly*/ |
93 d.f[0] = ((DCfloat*)p->stackptr-4)[0]; /* '-4' b/c those regs are stored right before the args */ | |
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94 d.f[1] = ((DCfloat*)p->stackptr-4)[1]; |
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95 ++p->freg_count; |
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96 } else { |
110 | 97 /*result = *((DCdouble*)p->stackptr); this changes the value, slightly*/ |
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98 d.f[0] = ((DCfloat*)p->stackptr)[0]; |
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99 d.f[1] = ((DCfloat*)p->stackptr)[1]; |
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100 } |
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101 p->stackptr += sizeof(DCdouble); |
102
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102 return d.result; |
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103 } |
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104 |