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Move OS module out of backend Javascript into a proper module file. Add normal bytearray to bytearray module. Add read:to method to os module for reading into a bytearray.
author Michael Pavone <pavone@retrodev.com>
date Thu, 24 Jul 2014 21:58:26 -0700
parents fb922651db29
children 2a0a88799737
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
rev   line source
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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
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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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16
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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: stringFrom:to withVars:{
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50 from <- obj_int32 ptr
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51 to <- obj_int32 ptr
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52 str <- string ptr
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53 } andCode: :from :to {
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54 //probably should do some UTF-8 validation at some point
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55 str <- make_object: (addr_of: string_meta) NULL 0
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56 str bytes!: (to num) - (from num)
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57 str len!: (str bytes)
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58 str data!: (GC_MALLOC_ATOMIC: (str bytes) + 1)
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59 memcpy: (str data) buffer (str bytes)
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60 (str data) set: (str bytes) 0
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61 str
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62 }
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63
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64 string <- {
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65 stringFrom: 0 to:
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66 }
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67
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68 findChar:else <- :char found :else {
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69 notfound <- true
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70 n <- length
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71 i <- 0
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72 while: { notFound && i < n } do: {
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73 if: (get: i) = char {
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74 notfound <- false
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75 } else: {
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76 i <- i + 1
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77 }
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78 }
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79 if: notfound else else: {
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80 found: i
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81 }
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82 }
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83 } _init_buf: size
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84 }
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85
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86 executable <- :size {
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87 buf <- #{
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88 llProperty: bytes withType: uint32_t
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89 llProperty: buffer withType: (void ptr)
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90 llMessage: _init withVars: {
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91 sz <- obj_int32 ptr
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92 } andCode: :sz {
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93 bytes <- sz num
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94 buffer <- sbrk: bytes
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95 mprotect: buffer bytes (PROT_READ or PROT_WRITE or PROT_EXEC)
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96 self
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97 }
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98 llMessage: set withVars: {
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99 offset <- obj_int32 ptr
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100 newval <- obj_uint8 ptr
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101 } andCode: :offset newval {
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102 (buffer castTo: (uint8_t ptr)) set: (offset num) (newval num)
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103 self
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104 }
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105 llMessage: get withVars: {
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106 offset <- obj_int32 ptr
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107 ret <- obj_uint8 ptr
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108 } andCode: :offset {
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109 ret <- make_object: (addr_of: obj_uint8_meta) NULL 0
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110 ret num!: ((buffer castTo: (uint8_t ptr)) get: (offset num))
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111 ret
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112 }
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113 llMessage: run withVars: {
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114 fun <- uint64_t funptr
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115 funret <- obj_uint64 ptr
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116 } andCode: {
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117 funret <- make_object: (addr_of: obj_uint64_meta) NULL 0
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118 fun <- buffer
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119 funret num!: ( fun: )
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120 funret
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121 }
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122
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123 llMessage: runWithArg withVars: {
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124 fun <- uint64_t funptr: uint64_t
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125 funret <- obj_uint64 ptr
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126 arg <- obj_uint64 ptr
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127 } andCode: :arg {
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128 fun <- buffer
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129 funret <- make_object: (addr_of: obj_uint64_meta) NULL 0
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130 funret num!: ( fun: (arg num) )
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131 funret
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132 }
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133 }
258
fb922651db29 Pass size parameter to _init in bytearray
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134 buf _init: size
178
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135 }
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136
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137 executableFromBytes <- :bytes {
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138 totalSize <- bytes fold: 0 with: :acc el {
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139 acc + (el length)
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140 }
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141 ba <- executable: totalSize
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142 bytes fold: 0 with: :idx el {
180
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143 el flattenTo: ba at: idx
178
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144 }
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145 ba
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146 }
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147 }