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A number of fixes and enhancmenets to "normal" bytearrays
author Michael Pavone <pavone@retrodev.com>
date Thu, 24 Jul 2014 23:52:37 -0700
parents d1dc2d70bdfd
children 4c669942c30d
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1 #{
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2 includeSystemHeader: "unistd.h"
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3 includeSystemHeader: "sys/mman.h"
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4
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5 normal <- :size {
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6 #{
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7 llProperty: bytes withType: uint32_t
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8 llProperty: buffer withType: (void ptr)
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9 llMessage: _init_buf withVars: {
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10 sz <- obj_int32 ptr
294
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11 } andCode: :sz {
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12 bytes <- sz num
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13 buffer <- GC_MALLOC_ATOMIC: bytes
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14 self
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15 }
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17 llMessage: _buf_ptr withVars: {
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18 ptrret <- cpointer ptr
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19 } andCode: {
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20 ptrret <- make_object: (addr_of: cpointer_meta) NULL 0
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21 ptrret val!: buffer
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22 ptrret
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23 }
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24
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25 llMessage: length withVars: {
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26 intret <- obj_int32 ptr
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27 } andCode: {
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28 intret <- make_object: (addr_of: obj_int32_meta) NULL 0
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29 intret num!: bytes
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30 intret
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31 }
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32
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33 llMessage: set withVars: {
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34 offset <- obj_int32 ptr
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35 newval <- obj_uint8 ptr
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36 } andCode: :offset newval {
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37 (buffer castTo: (uint8_t ptr)) set: (offset num) (newval num)
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38 self
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39 }
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40 llMessage: get withVars: {
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41 offset <- obj_int32 ptr
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42 ret <- obj_uint8 ptr
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43 } andCode: :offset {
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44 ret <- make_object: (addr_of: obj_uint8_meta) NULL 0
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45 ret num!: ((buffer castTo: (uint8_t ptr)) get: (offset num))
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46 ret
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47 }
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48
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49 llMessage: shrinkTo withVars: {
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50 newsize <- obj_int32 ptr
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51 } andCode: :newsize {
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52 if: (newsize num) < bytes {
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53 bytes <- newsize num
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54 }
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55 self
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56 }
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57
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58 llMessage: stringFrom:to withVars: {
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59 from <- obj_int32 ptr
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60 to <- obj_int32 ptr
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61 str <- string ptr
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62 } andCode: :from :to {
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63 //probably should do some UTF-8 validation at some point
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64 str <- make_object: (addr_of: string_meta) NULL 0
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65 str bytes!: (to num) - (from num)
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66 str len!: (str bytes)
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67 str data!: (GC_MALLOC_ATOMIC: (str bytes) + 1)
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68 memcpy: (str data) (buffer castTo: (uint8_t ptr)) + (from num) (str bytes)
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69 (str data) set: (str bytes) 0
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70 str
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71 }
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72
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73 string <- {
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74 stringFrom: 0 to: length
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75 }
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76
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77 findChar:from:else <- :char :start found :else {
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78 notfound <- true
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79 n <- length
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80 i <- start
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81 while: { notfound && i < n } do: {
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82 if: (get: i) = char {
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83 notfound <- false
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84 } else: {
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85 i <- i + 1
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86 }
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87 }
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88 if: notfound else else: {
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89 found: i
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90 }
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91 }
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92 } _init_buf: size
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93 }
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94
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95 executable <- :size {
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96 buf <- #{
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97 llProperty: bytes withType: uint32_t
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98 llProperty: buffer withType: (void ptr)
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99 llMessage: _init withVars: {
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100 sz <- obj_int32 ptr
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101 } andCode: :sz {
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102 bytes <- sz num
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103 buffer <- sbrk: bytes
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104 mprotect: buffer bytes (PROT_READ or PROT_WRITE or PROT_EXEC)
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105 self
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106 }
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107 llMessage: set withVars: {
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108 offset <- obj_int32 ptr
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109 newval <- obj_uint8 ptr
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110 } andCode: :offset newval {
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111 (buffer castTo: (uint8_t ptr)) set: (offset num) (newval num)
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112 self
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113 }
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114 llMessage: get withVars: {
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115 offset <- obj_int32 ptr
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116 ret <- obj_uint8 ptr
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117 } andCode: :offset {
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118 ret <- make_object: (addr_of: obj_uint8_meta) NULL 0
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119 ret num!: ((buffer castTo: (uint8_t ptr)) get: (offset num))
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120 ret
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121 }
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122 llMessage: run withVars: {
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123 fun <- uint64_t funptr
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124 funret <- obj_uint64 ptr
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125 } andCode: {
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126 funret <- make_object: (addr_of: obj_uint64_meta) NULL 0
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127 fun <- buffer
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128 funret num!: ( fun: )
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129 funret
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130 }
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131
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132 llMessage: runWithArg withVars: {
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133 fun <- uint64_t funptr: uint64_t
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134 funret <- obj_uint64 ptr
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135 arg <- obj_uint64 ptr
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136 } andCode: :arg {
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137 fun <- buffer
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138 funret <- make_object: (addr_of: obj_uint64_meta) NULL 0
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139 funret num!: ( fun: (arg num) )
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140 funret
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141 }
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142 }
258
fb922651db29 Pass size parameter to _init in bytearray
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143 buf _init: size
178
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144 }
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145
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146 executableFromBytes <- :bytes {
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147 totalSize <- bytes fold: 0 with: :acc el {
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148 acc + (el length)
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149 }
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150 ba <- executable: totalSize
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151 bytes fold: 0 with: :idx el {
180
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152 el flattenTo: ba at: idx
178
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153 }
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154 ba
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155 }
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156 }