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	Commit message (Collapse)	Author	Age	Files	Lines
*	updated pydoc	hut	2010-03-12	1	-11/+12
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*	incremented version number and updated pydoc html files v1.0.3	hut	2010-02-16	1	-2/+2
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*	updated pydoc documentation	hut	2010-01-13	1	-1/+13
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*	moved pydoc pages to doc/pydoc	hut	2009-12-25	1	-0/+22

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<!DOCTYPE html> <html> <head> <meta charset="UTF-8"> <title>Mu - 309stream.subx</title> <meta name="Generator" content="Vim/8.2"> <meta name="plugin-version" content="vim8.1_v2"> <meta name="syntax" content="none"> <meta name="settings" content="number_lines,use_css,pre_wrap,no_foldcolumn,expand_tabs,line_ids,prevent_copy=,use_input_for_pc=fallback"> <meta name="colorscheme" content="minimal-light"> <style>  </style> <script>  </script> </head> <body onload='JumpToLine();'> <a href='https://github.com/akkartik/mu/blob/main/309stream.subx'>https://github.com/akkartik/mu/blob/main/309stream.subx</a> <pre id='vimCodeElement'> 1 # Some unsafe methods not intended to be used directly in SubX, only through 2 # Mu after proper type-checking. 3 4 == code 5 6 stream-empty?: # s: (addr stream _) -> result/eax: boolean 7 # . prologue 8 55/push-ebp 9 89/<- %ebp 4/r32/esp 10 # . save registers 11 51/push-ecx 12 56/push-esi 13 # result = false 14 b8/copy-to-eax 0/imm32/false 15 # esi = s 16 8b/-> *(ebp+8) 6/r32/esi 17 # return s->read >= s->write 18 8b/-> *esi 1/r32/ecx 19 39/compare-with *(esi+4) 1/r32/ecx 20 0f 9d/set-if->= %al 21 $stream-empty?:end: 22 # . restore registers 23 5e/pop-to-esi 24 59/pop-to-ecx 25 # . epilogue 26 89/<- %esp 5/r32/ebp 27 5d/pop-to-ebp 28 c3/return 29 30 stream-full?: # s: (addr stream _) -> result/eax: boolean 31 # . prologue 32 55/push-ebp 33 89/<- %ebp 4/r32/esp 34 # . save registers 35 51/push-ecx 36 56/push-esi 37 # result = false 38 b8/copy-to-eax 0/imm32/false 39 # esi = s 40 8b/-> *(ebp+8) 6/r32/esi 41 # return s->write >= s->size 42 8b/-> *(esi+8) 1/r32/ecx 43 39/compare-with *esi 1/r32/ecx 44 0f 9d/set-if->= %al 45 $stream-full?:end: 46 # . restore registers 47 5e/pop-to-esi 48 59/pop-to-ecx 49 # . epilogue 50 89/<- %esp 5/r32/ebp 51 5d/pop-to-ebp 52 c3/return 53 54 write-to-stream: # s: (addr stream _), in: (addr byte), n: int 55 # . prologue 56 55/push-ebp 57 89/<- %ebp 4/r32/esp 58 # . save registers 59 50/push-eax 60 51/push-ecx 61 52/push-edx 62 53/push-ebx 63 57/push-edi 64 # edi = s 65 8b/-> *(ebp+8) 7/r32/edi 66 # var swrite/edx: int = s->write 67 8b/-> *edi 2/r32/edx 68 # if (swrite + n > s->size) abort 69 8b/-> *(ebp+0x10) 1/r32/ecx 70 01/add-to %ecx 2/r32/edx 71 3b/compare 1/r32/ecx *(edi+8) 72 0f 8f/jump-if-> $write-to-stream:<a href='317abort.subx.html#L5'>abort</a>/disp32 73 # var out/edx: (addr byte) = s->data + s->write 74 8d/copy-address *(edi+edx+0xc) 2/r32/edx 75 # var outend/ebx: (addr byte) = out + n 76 8b/-> *(ebp+0x10) 3/r32/ebx 77 8d/copy-address *(edx+ebx) 3/r32/ebx 78 # eax = in 79 8b/-> *(ebp+0xc) 0/r32/eax 80 # var inend/ecx: (addr byte) = in + n 81 8b/-> *(ebp+0x10) 1/r32/ecx 82 8d/copy-address *(eax+ecx) 1/r32/ecx 83 # 84 (<a href='108write.subx.html#L257'>_append-4</a> %edx %ebx %eax %ecx) # => eax 85 # s->write += n 86 8b/-> *(ebp+0x10) 1/r32/ecx 87 01/add-to *edi 1/r32/ecx 88 $write-to-stream:end: 89 # . restore registers 90 5f/pop-to-edi 91 5b/pop-to-ebx 92 5a/pop-to-edx 93 59/pop-to-ecx 94 58/pop-to-eax 95 # . epilogue 96 89/<- %esp 5/r32/ebp 97 5d/pop-to-ebp 98 c3/return 99 100 $write-to-stream:<a href='317abort.subx.html#L5'>abort</a>: 101 (<a href='317abort.subx.html#L5'>abort</a> "write-to-stream: stream full") 102 # never gets here 103 104 read-from-stream: # s: (addr stream _), out: (addr byte), n: int 105 # . prologue 106 55/push-ebp 107 89/<- %ebp 4/r32/esp 108 # . save registers 109 50/push-eax 110 51/push-ecx 111 52/push-edx 112 53/push-ebx 113 56/push-esi 114 # esi = s 115 8b/-> *(ebp+8) 6/r32/esi 116 # var sread/edx: int = s->read 117 8b/-> *(esi+4) 2/r32/edx 118 # if (sread + n > s->write) abort 119 8b/-> *(ebp+0x10) 1/r32/ecx 120 01/add-to %ecx 2/r32/edx 121 3b/compare 1/r32/ecx *esi 122 0f 8f/jump-if-> $read-from-stream:<a href='317abort.subx.html#L5'>abort</a>/disp32 123 # var in/edx: (addr byte) = s->data + s->read 124 8d/copy-address *(esi+edx+0xc) 2/r32/edx 125 # var inend/ebx: (addr byte) = in + n 126 8b/-> *(ebp+0x10) 3/r32/ebx 127 8d/copy-address *(edx+ebx) 3/r32/ebx 128 # eax = out 129 8b/-> *(ebp+0xc) 0/r32/eax 130 # var outend/ecx: (addr byte) = out + n 131 8b/-> *(ebp+0x10) 1/r32/ecx 132 8d/copy-address *(eax+ecx) 1/r32/ecx 133 # 134 (<a href='108write.subx.html#L257'>_append-4</a> %eax %ecx %edx %ebx) # => eax 135 # s->read += n 136 8b/-> *(ebp+0x10) 1/r32/ecx 137 01/add-to *(esi+4) 1/r32/ecx 138 $read-from-stream:end: 139 # . restore registers 140 5e/pop-to-esi 141 5b/pop-to-ebx 142 5a/pop-to-edx 143 59/pop-to-ecx 144 58/pop-to-eax 145 # . epilogue 146 89/<- %esp 5/r32/ebp 147 5d/pop-to-ebp 148 c3/return 149 150 $read-from-stream:<a href='317abort.subx.html#L5'>abort</a>: 151 (<a href='317abort.subx.html#L5'>abort</a> "read-from-stream: stream empty") 152 # never gets here 153 154 stream-first: # s: (addr stream byte) -> result/eax: byte 155 # . prologue 156 55/push-ebp 157 89/<- %ebp 4/r32/esp 158 # . save registers 159 51/push-ecx 160 56/push-esi 161 # result = false 162 b8/copy-to-eax 0/imm32 163 # esi = s 164 8b/-> *(ebp+8) 6/r32/esi 165 # var idx/ecx: int = s->read 166 8b/-> *(esi+4) 1/r32/ecx 167 # if idx >= s->write return 0 168 3b/compare-with 1/r32/ecx *esi 169 7d/jump-if->= $stream-first:end/disp8 170 # result = s->data[idx] 171 8a/byte-> *(esi+ecx+0xc) 0/r32/AL 172 $stream-first:end: 173 # . restore registers 174 5e/pop-to-esi 175 59/pop-to-ecx 176 # . epilogue 177 89/<- %esp 5/r32/ebp 178 5d/pop-to-ebp 179 c3/return 180 181 stream-final: # s: (addr stream byte) -> result/eax: byte 182 # . prologue 183 55/push-ebp 184 89/<- %ebp 4/r32/esp 185 # . save registers 186 51/push-ecx 187 56/push-esi 188 # result = false 189 b8/copy-to-eax 0/imm32 190 # esi = s 191 8b/-> *(ebp+8) 6/r32/esi 192 # var max/ecx: int = s->write 193 8b/-> *esi 1/r32/ecx 194 # if s->read >= max return 0 195 39/compare-with *(esi+4) 1/r32/ecx 196 7d/jump-if->= $stream-final:end/disp8 197 # var idx/ecx: int = max - 1 198 49/decrement-ecx 199 # result = s->data[idx] 200 8a/byte-> *(esi+ecx+0xc) 0/r32/AL 201 $stream-final:end: 202 # . restore registers 203 5e/pop-to-esi 204 59/pop-to-ecx 205 # . epilogue 206 89/<- %esp 5/r32/ebp 207 5d/pop-to-ebp 208 c3/return 209 210 # compare all the data in two streams (ignoring the read pointer) 211 streams-data-equal?: # a: (addr stream byte), b: (addr array byte) -> result/eax: boolean 212 # pseudocode: 213 # awrite = a->write 214 # if (awrite != b->write) return false 215 # i = 0 216 # curra = a->data 217 # currb = b->data 218 # while i < awrite 219 # i1 = *curra 220 # i2 = *currb 221 # if (c1 != c2) return false 222 # i+=4, curra+=4, currb+=4 223 # return true 224 # 225 # registers: 226 # i: ecx 227 # awrite: edx 228 # curra: esi 229 # currb: edi 230 # i1: eax 231 # i2: ebx 232 # 233 # . prologue 234 55/push-ebp 235 89/<- %ebp 4/r32/esp 236 # . save registers 237 51/push-ecx 238 52/push-edx 239 53/push-ebx 240 56/push-esi 241 57/push-edi 242 # esi = a 243 8b/-> *(ebp+8) 6/r32/esi 244 # edi = b 245 8b/-> *(ebp+0xc) 7/r32/edi 246 # var awrite/edx: int = a->write 247 8b/-> *esi 2/r32/edx 248 $streams-data-equal?:sizes: 249 # if (awrite != b->write) return false 250 39/compare *edi 2/r32/edx 251 75/jump-if-!= $streams-data-equal?:false/disp8 252 # var curra/esi: (addr byte) = a->data 253 81 0/subop/add %esi 0xc/imm32 254 # var currb/edi: (addr byte) = b->data 255 81 0/subop/add %edi 0xc/imm32 256 # var i/ecx: int = 0 257 31/xor-with %ecx 1/r32/ecx 258 # var vala/eax: int 259 31/xor-with %eax 0/r32/eax 260 # var valb/ebx: int 261 31/xor-with %ebx 3/r32/ebx 262 $streams-data-equal?:loop: 263 { 264 # if (i >= awrite) return true 265 39/compare %ecx 2/r32/edx 266 7d/jump-if->= $streams-data-equal?:true/disp8 267 # var vala/eax: int = *curra 268 8a/byte-> *esi 0/r32/eax 269 # var valb/ebx: int = *currb 270 8a/byte-> *edi 3/r32/ebx 271 # if (vala != valb) return false 272 39/compare %eax 3/r32/ebx 273 75/jump-if-!= $streams-data-equal?:false/disp8 274 # i++ 275 41/increment-ecx 276 # curra++ 277 46/increment-esi 278 # currb++ 279 47/increment-edi 280 eb/jump loop/disp8 281 } 282 $streams-data-equal?:true: 283 b8/copy-to-eax 1/imm32 284 eb/jump $streams-data-equal?:end/disp8 285 $streams-data-equal?:false: 286 b8/copy-to-eax 0/imm32 287 $streams-data-equal?:end: 288 # . restore registers 289 5f/pop-to-edi 290 5e/pop-to-esi 291 5b/pop-to-ebx 292 5a/pop-to-edx 293 59/pop-to-ecx 294 # . epilogue 295 89/<- %esp 5/r32/ebp 296 5d/pop-to-ebp 297 c3/return 298 299 # helper for tests 300 check-streams-data-equal: # s: (addr stream _), expected: (addr array _), msg: (addr array byte) 301 # . prologue 302 55/push-ebp 303 89/<- %ebp 4/r32/esp 304 # . save registers 305 50/push-eax 306 # 307 (<a href='309stream.subx.html#L211'>streams-data-equal?</a> *(ebp+8) *(ebp+0xc)) # => eax 308 (<a href='502test.mu.html#L2'>check-ints-equal</a> %eax 1 *(ebp+0x10)) 309 $check-streams-data-equal:end: 310 # . restore registers 311 58/pop-to-eax 312 # . epilogue 313 89/<- %esp 5/r32/ebp 314 5d/pop-to-ebp 315 c3/return </pre> </body> </html>