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132
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1 private import llvm.intrinsic;
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2
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3 extern(C):
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4
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5 int memcmp(void*,void*,size_t);
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6 size_t strlen(char*);
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7
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8 version(LLVM64)
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9 alias llvm_memcpy_i64 llvm_memcpy;
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10 else
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11 alias llvm_memcpy_i32 llvm_memcpy;
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12
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13 // per-element array init routines
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14
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15 void _d_array_init_i1(bool* a, size_t n, bool v)
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16 {
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17 auto p = a;
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18 auto end = a+n;
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19 while (p !is end)
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20 *p++ = v;
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21 }
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22
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23 void _d_array_init_i8(ubyte* a, size_t n, ubyte v)
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24 {
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25 auto p = a;
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26 auto end = a+n;
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27 while (p !is end)
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28 *p++ = v;
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29 }
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30
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31 void _d_array_init_i16(ushort* a, size_t n, ushort v)
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32 {
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33 auto p = a;
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34 auto end = a+n;
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35 while (p !is end)
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36 *p++ = v;
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37 }
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38
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39 void _d_array_init_i32(uint* a, size_t n, uint v)
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40 {
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41 auto p = a;
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42 auto end = a+n;
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43 while (p !is end)
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44 *p++ = v;
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45 }
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46
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47 void _d_array_init_i64(ulong* a, size_t n, ulong v)
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48 {
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49 auto p = a;
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50 auto end = a+n;
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51 while (p !is end)
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52 *p++ = v;
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53 }
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54
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55 void _d_array_init_float(float* a, size_t n, float v)
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56 {
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57 auto p = a;
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58 auto end = a+n;
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59 while (p !is end)
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60 *p++ = v;
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61 }
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62
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63 void _d_array_init_double(double* a, size_t n, double v)
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64 {
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65 auto p = a;
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66 auto end = a+n;
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67 while (p !is end)
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68 *p++ = v;
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69 }
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70
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71 void _d_array_init_pointer(void** a, size_t n, void* v)
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72 {
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73 auto p = a;
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74 auto end = a+n;
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75 while (p !is end)
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76 *p++ = v;
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77 }
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78
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79 void _d_array_init_mem(void* a, size_t na, void* v, size_t nv)
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80 {
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81 auto p = a;
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82 auto end = a + na*nv;
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83 while (p !is end) {
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84 llvm_memcpy(p,v,nv,0);
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85 p += nv;
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86 }
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87 }
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88
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89 // for array cast
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90 size_t _d_array_cast_len(size_t len, size_t elemsz, size_t newelemsz)
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91 {
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92 if (newelemsz == 1) {
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93 return len*elemsz;
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94 }
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95 else if (len % newelemsz) {
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96 throw new Exception("Bad array cast");
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97 }
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98 return (len*elemsz)/newelemsz;
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99 }
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100
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101 // creating args for main
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102 void _d_main_args(uint n, char** args, ref char[][] res)
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103 {
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104 assert(res.length == n);
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105 foreach(i,v; args[0..n])
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106 {
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107 res[i] = v[0 .. strlen(v)];
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108 }
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109 }
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