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authorKartik K. Agaram <vc@akkartik.com>2021-07-07 19:34:54 -0700
committerKartik K. Agaram <vc@akkartik.com>2021-07-07 19:34:54 -0700
commitd73c84e299d7617014c67f34ad7afbc641eaf690 (patch)
tree0aa8f451fbf1cc783b164dfac26bbd731fc8c76e
parentd78a45340c27a8a3a4b7ab334c1807a477b97c76 (diff)
downloadmu-d73c84e299d7617014c67f34ad7afbc641eaf690.tar.gz
instructions for Universal Ctags
Thanks Sumeet Agarwal for raising this issue.
Diffstat
-rw-r--r--editor/editor.md7
-rw-r--r--editor/mu.ctags (renamed from editor/exuberant_ctags_rc)0
2 files changed, 4 insertions, 3 deletions
diff --git a/editor/editor.md b/editor/editor.md
index 65f2badb..d3e54f68 100644
--- a/editor/editor.md
+++ b/editor/editor.md
@@ -10,9 +10,10 @@ instructions within.
 The Vim files are most developed. In particular, I recommend some optional
 setup in subx.vim to use multiple colors for comments.
 
-If you use [Exuberant Ctags](http://ctags.sourceforge.net) for jumping easily
-from names to their definitions in your editor, copy the contents of `exuberant_ctags_rc`
-into your `.ctags` file.
+If you use [`ctags`](http://ctags.sourceforge.net) for jumping easily
+from names to their definitions in your editor, set it up to load `mu.ctags`.
+For classic Exuberant Ctags, copy it into `~/.ctags`. For the newer Universal
+Ctags, copy it into `~/.ctags.d/mu.ctags`.
 
 [Here](https://lobste.rs/s/qglfdp/subx_minimalist_assembly_language_for#c_o9ddqk)
 are some tips on my setup for quickly finding the right opcode for any
diff --git a/editor/exuberant_ctags_rc b/editor/mu.ctags
index 92e873f9..92e873f9 100644
--- a/editor/exuberant_ctags_rc
+++ b/editor/mu.ctags
generated by cgit-pink 1.4.1-2-gfad0 (git 2.36.2.497.gbbea4dcf42) at 2024-06-17 08:22:49 +0000
70' href='#n170'>170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 210 211 212 213 214 215 216 217 218 219 220 221 222 223 224 225 226 227 228 229 230 231 232 233 234 235 236 237 238 239 240 241 242 243 244 245 246 247 248 249 250 251 252 253 254 255 256 257 258 259 260 261 262 263 264 265 266 267 268 269 270 271 272 273 274 275 276 277 278 279 280 281 282 283 284 285 286 287 288 289 290 291 292 293 294 295 296 297 298 299 300 301 302 303 304 305 306 307 308 309 310 311 312 313 314 315 316 317 318 319 320 321 322 323 324 325 326 327 328 329 330 331 332 333 334 335 336 337 338 339 340 341 342 343 344 345 346 347 348 349 350 351 352 353 354 355 356 357 358 359 360 361 362 363 364 365 366 367 368 369 370 371 372 373 374 375 376 377 378 379 380 381 382 383 384 385 386 387 388 389 390 391 392 393 394 395 396 397 398 399 400 401 402 403 404 405 406 407 408 409 410 411 412 413 414 415 416 417 418 419 420 421 422 423 424 425 426 427 428 429 430 431 432 433 434 435 436 437 438 439 440 441 442 443 444 445 446 447 448 449 450 451 452 453 454 455 456 457 458 459 460 461 462 463 464 465 466 467 468 469 470 471 472 473 474 475 476 477 478 479 480 481 482 483 484 485 486 487 488 489 490 491 492 493 494 495 496 497 498 499 500 501 502 503 504 505 506 507 508 509 510 511 512 513 514 515 516 517 518 519 520 521 522 523 524 525 526 527 528 529 530 531 532 533 534 535 536 537 538 539 540 541 542 543 544 545 546 547 548 549 550 551 552 553 554 555 556 557 558 559 560 561 562 563 564 565 566 567 568 569 570 571 572 573 574 575 576 577 578 579 580 581 582 583 584 585 586 587 588 589 590 591 592 593 
# some primitives for checking stream contents

== code
#   instruction                     effective address                                                   register    displacement    immediate
# . op          subop               mod             rm32          base        index         scale       r32
# . 1-3 bytes   3 bits              2 bits          3 bits        3 bits      3 bits        2 bits      2 bits      0/1/2/4 bytes   0/1/2/4 bytes

# compare all the data in a stream (ignoring the read pointer)
stream-data-equal?:  # f : (address stream), s : (address string) -> eax : boolean
    # . prolog
    55/push-ebp
    89/copy                         3/mod/direct    5/rm32/ebp    .           .             .           4/r32/esp   .               .                 # copy esp to ebp
    # . save registers
    51/push-ecx
    52/push-edx
    56/push-esi
    57/push-edi
    # esi = f
    8b/copy                         1/mod/*+disp8   5/rm32/ebp    .           .             .           6/r32/esi   8/disp8         .                 # copy *(ebp+8) to esi
    # eax = f->write
    8b/copy                         0/mod/indirect  6/rm32/esi    .           .             .           0/r32/eax   .               .                 # copy *esi to eax
    # maxf/edx = f->data + f->write
    8d/copy-address                 1/mod/*+disp8   4/rm32/sib    6/base/esi  0/index/eax   .           2/r32/edx   0xc/disp8       .                 # copy esi+eax+12 to edx
    # currf/esi = f->data
    81          0/subop/add         3/mod/direct    6/rm32/esi    .           .             .           .           .               0xc/imm32         # add to esi
    # edi = s
    8b/copy                         1/mod/*+disp8   5/rm32/ebp    .           .             .           7/r32/edi   0xc/disp8       .                 # copy *(ebp+12) to edi
    # if (f->write != s->length) return false
$stream-data-equal?:compare-lengths:
    39/compare                      0/mod/indirect  7/rm32/edi    .           .             .           0/r32/eax   .               .                 # compare *edi and eax
    75/jump-if-not-equal  $stream-data-equal?:false/disp8
    # currs/edi = s->data
    81          0/subop/add         3/mod/direct    7/rm32/edi    .           .             .           .           .               4/imm32           # add to edi
    # eax = ecx = 0
    31/xor                          3/mod/direct    0/rm32/eax    .           .             .           0/r32/eax   .               .                 # clear eax
    31/xor                          3/mod/direct    1/rm32/ecx    .           .             .           1/r32/ecx   .               .                 # clear ecx
$stream-data-equal?:loop:
    # if (currf >= maxf) return true
    39/compare                      3/mod/direct    6/rm32/esi    .           .             .           2/r32/edx   .               .                 # compare esi with edx
    73/jump-if-greater-or-equal-unsigned  $stream-data-equal?:true/disp8
    # AL = *currs
    8a/copy-byte                    0/mod/indirect  6/rm32/esi    .           .             .           0/r32/AL    .               .                 # copy byte at *esi to AL
    # CL = *curr
    8a/copy-byte                    0/mod/indirect  7/rm32/edi    .           .             .           1/r32/CL    .               .                 # copy byte at *edi to CL
    # if (eax != ecx) return false
    39/compare                      3/mod/direct    0/rm32/eax    .           .             .           1/r32/ecx   .               .                 # compare eax and ecx
    75/jump-if-not-equal  $stream-data-equal?:false/disp8
    # ++f
    46/increment-esi
    # ++curr
    47/increment-edi
    eb/jump $stream-data-equal?:loop/disp8
$stream-data-equal?:false:
    b8/copy-to-eax  0/imm32
    eb/jump  $stream-data-equal?:end/disp8
$stream-data-equal?:true:
    b8/copy-to-eax  1/imm32
$stream-data-equal?:end:
    # . restore registers
    5f/pop-to-edi
    5e/pop-to-esi
    5a/pop-to-edx
    59/pop-to-ecx
    # . epilog
    89/copy                         3/mod/direct    4/rm32/esp    .           .             .           5/r32/ebp   .               .                 # copy ebp to esp
    5d/pop-to-ebp
    c3/return

test-stream-data-equal:
    # . prolog
    55/push-ebp
    89/copy                         3/mod/direct    5/rm32/ebp    .           .             .           4/r32/esp   .               .                 # copy esp to ebp
    # clear-stream(_test-stream)
    # . . push args
    68/push  _test-stream/imm32
    # . . call
    e8/call  clear-stream/disp32
    # . . discard args
    81          0/subop/add         3/mod/direct    4/rm32/esp    .           .             .           .           .               4/imm32           # add to esp
    # write(_test-stream, "Abc")
    # . . push args
    68/push  "Abc"/imm32
    68/push  _test-stream/imm32
    # . . call
    e8/call  write/disp32
    # . . discard args
    81          0/subop/add         3/mod/direct    4/rm32/esp    .           .             .           .           .               8/imm32           # add to esp
    # eax = stream-data-equal?(_test-stream, "Abc")
    # . . push args
    68/push  "Abc"/imm32
    68/push  _test-stream/imm32
    # . . call
    e8/call  stream-data-equal?/disp32
    # . . discard args
    81          0/subop/add         3/mod/direct    4/rm32/esp    .           .             .           .           .               8/imm32           # add to esp
    # check-ints-equal(eax, 1, msg)
    # . . push args
    68/push  "F - test-stream-data-equal"/imm32
    68/push  1/imm32
    50/push-eax
    # . . call
    e8/call  check-ints-equal/disp32
    # . . discard args
    81          0/subop/add         3/mod/direct    4/rm32/esp    .           .             .           .           .               0xc/imm32         # add to esp
    # . epilog
    89/copy                         3/mod/direct    4/rm32/esp    .           .             .           5/r32/ebp   .               .                 # copy ebp to esp
    5d/pop-to-ebp
    c3/return

test-stream-data-equal-2:
    # . prolog
    55/push-ebp
    89/copy                         3/mod/direct    5/rm32/ebp    .           .             .           4/r32/esp   .               .                 # copy esp to ebp
    # clear-stream(_test-stream)
    # . . push args
    68/push  _test-stream/imm32
    # . . call
    e8/call  clear-stream/disp32
    # . . discard args
    81          0/subop/add         3/mod/direct    4/rm32/esp    .           .             .           .           .               4/imm32           # add to esp
    # write(_test-stream, "Abc")
    # . . push args
    68/push  "Abc"/imm32
    68/push  _test-stream/imm32
    # . . call
    e8/call  write/disp32
    # . . discard args
    81          0/subop/add         3/mod/direct    4/rm32/esp    .           .             .           .           .               8/imm32           # add to esp
    # eax = stream-data-equal?(_test-stream, "Abd")
    # . . push args
    68/push  "Abd"/imm32
    68/push  _test-stream/imm32
    # . . call
    e8/call  stream-data-equal?/disp32
    # . . discard args
    81          0/subop/add         3/mod/direct    4/rm32/esp    .           .             .           .           .               8/imm32           # add to esp
    # check-ints-equal(eax, 0, msg)
    # . . push args
    68/push  "F - test-stream-data-equal-2"/imm32
    68/push  0/imm32
    50/push-eax
    # . . call
    e8/call  check-ints-equal/disp32
    # . . discard args
    81          0/subop/add         3/mod/direct    4/rm32/esp    .           .             .           .           .               0xc/imm32         # add to esp
    # . epilog
    89/copy                         3/mod/direct    4/rm32/esp    .           .             .           5/r32/ebp   .               .                 # copy ebp to esp
    5d/pop-to-ebp
    c3/return

test-stream-data-equal-length-check:
    # . prolog
    55/push-ebp
    89/copy                         3/mod/direct    5/rm32/ebp    .           .             .           4/r32/esp   .               .                 # copy esp to ebp
    # clear-stream(_test-stream)
    # . . push args
    68/push  _test-stream/imm32
    # . . call
    e8/call  clear-stream/disp32
    # . . discard args
    81          0/subop/add         3/mod/direct    4/rm32/esp    .           .             .           .           .               4/imm32           # add to esp
    # write(_test-stream, "Abc")
    # . . push args
    68/push  "Abc"/imm32
    68/push  _test-stream/imm32
    # . . call
    e8/call  write/disp32
    # . . discard args
    81          0/subop/add         3/mod/direct    4/rm32/esp    .           .             .           .           .               8/imm32           # add to esp
    # eax = stream-data-equal?(_test-stream, "Abcd")
    # . . push args
    68/push  "Abcd"/imm32
    68/push  _test-stream/imm32
    # . . call
    e8/call  stream-data-equal?/disp32
    # . . discard args
    81          0/subop/add         3/mod/direct    4/rm32/esp    .           .             .           .           .               8/imm32           # add to esp
    # check-ints-equal(eax, 0, msg)
    # . . push args
    68/push  "F - test-stream-data-equal-length-check"/imm32
    68/push  0/imm32
    50/push-eax
    # . . call
    e8/call  check-ints-equal/disp32
    # . . discard args
    81          0/subop/add         3/mod/direct    4/rm32/esp    .           .             .           .           .               0xc/imm32         # add to esp
    # . epilog
    89/copy                         3/mod/direct    4/rm32/esp    .           .             .           5/r32/ebp   .               .                 # copy ebp to esp
    5d/pop-to-ebp
    c3/return

# helper for later tests
check-stream-equal:  # f : (address stream), s : (address string), msg : (address string)
    # . prolog
    55/push-ebp
    89/copy                         3/mod/direct    5/rm32/ebp    .           .             .           4/r32/esp   .               .                 # copy esp to ebp
    # . save registers
    50/push-eax
    # eax = stream-data-equal?(f, s)
    # . . push args
    ff          6/subop/push        1/mod/*+disp8   5/rm32/ebp    .           .             .           .           0xc/disp8       .                 # push *(ebp+12)
    ff          6/subop/push        1/mod/*+disp8   5/rm32/ebp    .           .             .           .           8/disp8         .                 # push *(ebp+8)
    # . . call
    e8/call  stream-data-equal?/disp32
    # . . discard args
    81          0/subop/add         3/mod/direct    4/rm32/esp    .           .             .           .           .               8/imm32           # add to esp
    # check-ints-equal(eax, 1, msg)
    # . . push args
    ff          6/subop/push        1/mod/*+disp8   5/rm32/ebp    .           .             .           .           0x10/disp8      .                 # push *(ebp+16)
    68/push  1/imm32
    50/push-eax
    # . . call
    e8/call  check-ints-equal/disp32
    # . . discard args
    81          0/subop/add         3/mod/direct    4/rm32/esp    .           .             .           .           .               0xc/imm32         # add to esp
$check-stream-equal:end:
    # . restore registers
    58/pop-to-eax
    # . epilog
    89/copy                         3/mod/direct    4/rm32/esp    .           .             .           5/r32/ebp   .               .                 # copy ebp to esp
    5d/pop-to-ebp
    c3/return

# scan the next line until newline starting from f->read and compare it with
# 's' (ignoring the trailing newline)
# on success, set f->read to after the next newline
# on failure, leave f->read unmodified
# this function is usually used only in tests, so we repeatedly write f->read
next-stream-line-equal?:  # f : (address stream), s : (address string) -> eax : boolean
    # pseudocode:
    #   currf = f->read  # bound: f->write
    #   currs = 0  # bound : s->length
    #   while true
    #     if currf >= f->write
    #       return currs >= s->length
    #     if f[currf] == '\n'
    #       ++currf
    #       return currs >= s->length
    #     if (currs >= s->length) return false  # the current line of f still has data to match
    #     if (f[currf] != s[currs]) return false
    #     ++currf
    #     ++currs
    #
    # collapsing the two branches that can return true:
    #   currf = f->read  # bound: f->write
    #   currs = 0  # bound : s->length
    #   while true
    #     if (currf >= f->write) break
    #     if (f[currf] == '\n') break
    #     if (currs >= s->length) return false  # the current line of f still has data to match
    #     if (f[currf] != s[currs]) return false
    #     ++currf
    #     ++currs
    #   ++currf  # skip '\n'
    #   return currs >= s->length
    # Here the final `++currf` is sometimes unnecessary (if we're already at the end of the stream)
    #
    # registers:
    #   f: esi
    #   s: edi
    #   currf: ecx
    #   currs: edx
    #   f[currf]: eax
    #   s[currs]: ebx
    #
    # . prolog
    55/push-ebp
    89/copy                         3/mod/direct    5/rm32/ebp    .           .             .           4/r32/esp   .               .                 # copy esp to ebp
    # . save registers
    51/push-ecx
    52/push-edx
    56/push-esi
    57/push-edi
    # esi = f
    8b/copy                         1/mod/*+disp8   5/rm32/ebp    .           .             .           6/r32/esi   8/disp8         .                 # copy *(ebp+8) to esi
    # currf/ecx = f->read
    8b/copy                         1/mod/*+disp8   6/rm32/esi    .           .             .           1/r32/ecx   4/disp8         .                 # copy *(esi+4) to ecx
    # edi = s
    8b/copy                         1/mod/*+disp8   5/rm32/ebp    .           .             .           7/r32/edi   0xc/disp8       .                 # copy *(ebp+12) to edi
    # currs/edx = 0
    31/xor                          3/mod/direct    2/rm32/edx    .           .             .           2/r32/edx   .               .                 # clear edx
    # eax = ebx = 0
    31/xor                          3/mod/direct    0/rm32/eax    .           .             .           0/r32/eax   .               .                 # clear eax
    31/xor                          3/mod/direct    3/rm32/ebx    .           .             .           3/r32/ebx   .               .                 # clear ebx
$next-stream-line-equal?:loop:
    # if (currf >= f->write) break
    3b/compare                      0/mod/indirect  6/rm32/esi    .           .             .           1/r32/ecx   .               .                 # compare ecx with *esi
    7d/jump-if-greater-or-equal  $next-stream-line-equal?:break/disp8
    # AL = *(f->data + f->read)
    8a/copy-byte                    1/mod/*+disp8   4/rm32/sib    6/base/esi  1/index/ecx   .           0/r32/AL    0xc/disp8       .                 # copy byte at *(esi+ecx+12) to AL
    # if (eax == '\n') break
    3d/compare-eax-and  0xa/imm32/newline
    74/jump-if-equal  $next-stream-line-equal?:break/disp8
    # if (currs >= s->length) return false
    3b/compare                      0/mod/indirect  7/rm32/edi    .           .             .           2/r32/edx   .               .                 # compare edx with *edi
    7d/jump-if-greater-or-equal  $next-stream-line-equal?:false/disp8
    # BL = *(s->data + currs)
    8a/copy-byte                    1/mod/*+disp8   4/rm32/sib    7/base/edi  2/index/edx   .           3/r32/BL    4/disp8         .                 # copy byte at *(edi+edx+4) to BL
    # if (eax != ebx) return false
    39/compare                      3/mod/direct    0/rm32/eax    .           .             .           3/r32/ebx   .               .                 # compare eax and ebx
    75/jump-if-not-equal  $next-stream-line-equal?:false/disp8
    # ++currf
    41/increment-ecx
    # ++currs
    42/increment-edx
    eb/jump $next-stream-line-equal?:loop/disp8
$next-stream-line-equal?:break:
    # ++currf
    41/increment-ecx
    # if (currs >= s->length) return true
    3b/compare                      0/mod/indirect  7/rm32/edi    .           .             .           2/r32/edx   .               .                 # compare edx with *edi
    7c/jump-if-lesser  $next-stream-line-equal?:false/disp8
$next-stream-line-equal?:true:
    b8/copy-to-eax  1/imm32
    # persist f->read on success
    89/copy                         1/mod/*+disp8   6/rm32/esi    .           .             .           1/r32/ecx   4/disp8         .                 # copy ecx to *(esi+4)
    eb/jump  $next-stream-line-equal?:end/disp8
$next-stream-line-equal?:false:
    b8/copy-to-eax  0/imm32
$next-stream-line-equal?:end:
    # . restore registers
    5f/pop-to-edi
    5e/pop-to-esi
    5a/pop-to-edx
    59/pop-to-ecx
    # . epilog
    89/copy                         3/mod/direct    4/rm32/esp    .           .             .           5/r32/ebp   .               .                 # copy ebp to esp
    5d/pop-to-ebp
    c3/return

test-next-stream-line-equal-stops-at-newline:
    # . prolog
    55/push-ebp
    89/copy                         3/mod/direct    5/rm32/ebp    .           .             .           4/r32/esp   .               .                 # copy esp to ebp
    # clear-stream(_test-stream)
    # . . push args
    68/push  _test-stream/imm32
    # . . call
    e8/call  clear-stream/disp32
    # . . discard args
    81          0/subop/add         3/mod/direct    4/rm32/esp    .           .             .           .           .               4/imm32           # add to esp
    # write(_test-stream, "Abc\ndef")
    # . . push args
    68/push  "Abc\ndef"/imm32
    68/push  _test-stream/imm32
    # . . call
    e8/call  write/disp32
    # . . discard args
    81          0/subop/add         3/mod/direct    4/rm32/esp    .           .             .           .           .               8/imm32           # add to esp
    # eax = next-stream-line-equal?(_test-stream, "Abc")
    # . . push args
    68/push  "Abc"/imm32
    68/push  _test-stream/imm32
    # . . call
    e8/call  next-stream-line-equal?/disp32
    # . . discard args
    81          0/subop/add         3/mod/direct    4/rm32/esp    .           .             .           .           .               8/imm32           # add to esp
    # check-ints-equal(eax, 1, msg)
    # . . push args
    68/push  "F - test-next-stream-line-equal-stops-at-newline"/imm32
    68/push  1/imm32
    50/push-eax
    # . . call
    e8/call  check-ints-equal/disp32
    # . . discard args
    81          0/subop/add         3/mod/direct    4/rm32/esp    .           .             .           .           .               0xc/imm32         # add to esp
    # . epilog
    89/copy                         3/mod/direct    4/rm32/esp    .           .             .           5/r32/ebp   .               .                 # copy ebp to esp
    5d/pop-to-ebp
    c3/return

test-next-stream-line-equal-stops-at-newline-2:
    # . prolog
    55/push-ebp
    89/copy                         3/mod/direct    5/rm32/ebp    .           .             .           4/r32/esp   .               .                 # copy esp to ebp
    # clear-stream(_test-stream)
    # . . push args
    68/push  _test-stream/imm32
    # . . call
    e8/call  clear-stream/disp32
    # . . discard args
    81          0/subop/add         3/mod/direct    4/rm32/esp    .           .             .           .           .               4/imm32           # add to esp
    # write(_test-stream, "Abc\ndef")
    # . . push args
    68/push  "Abc\ndef"/imm32
    68/push  _test-stream/imm32
    # . . call
    e8/call  write/disp32
    # . . discard args
    81          0/subop/add         3/mod/direct    4/rm32/esp    .           .             .           .           .               8/imm32           # add to esp
    # eax = next-stream-line-equal?(_test-stream, "def")
    # . . push args
    68/push  "def"/imm32
    68/push  _test-stream/imm32
    # . . call
    e8/call  next-stream-line-equal?/disp32
    # . . discard args
    81          0/subop/add         3/mod/direct    4/rm32/esp    .           .             .           .           .               8/imm32           # add to esp
    # check-ints-equal(eax, 0, msg)
    # . . push args
    68/push  "F - test-next-stream-line-equal-stops-at-newline-2"/imm32
    68/push  0/imm32
    50/push-eax
    # . . call
    e8/call  check-ints-equal/disp32
    # . . discard args
    81          0/subop/add         3/mod/direct    4/rm32/esp    .           .             .           .           .               0xc/imm32         # add to esp
    # . epilog
    89/copy                         3/mod/direct    4/rm32/esp    .           .             .           5/r32/ebp   .               .                 # copy ebp to esp
    5d/pop-to-ebp
    c3/return

test-next-stream-line-equal-skips-newline:
    # . prolog
    55/push-ebp
    89/copy                         3/mod/direct    5/rm32/ebp    .           .             .           4/r32/esp   .               .                 # copy esp to ebp
    # clear-stream(_test-stream)
    # . . push args
    68/push  _test-stream/imm32
    # . . call
    e8/call  clear-stream/disp32
    # . . discard args
    81          0/subop/add         3/mod/direct    4/rm32/esp    .           .             .           .           .               4/imm32           # add to esp
    # write(_test-stream, "Abc\ndef\n")
    # . . push args
    68/push  "Abc\ndef\n"/imm32
    68/push  _test-stream/imm32
    # . . call
    e8/call  write/disp32
    # . . discard args
    81          0/subop/add         3/mod/direct    4/rm32/esp    .           .             .           .           .               8/imm32           # add to esp
    # next-stream-line-equal?(_test-stream, "Abc")
    # . . push args
    68/push  "Abc"/imm32
    68/push  _test-stream/imm32
    # . . call
    e8/call  next-stream-line-equal?/disp32
    # . . discard args
    81          0/subop/add         3/mod/direct    4/rm32/esp    .           .             .           .           .               8/imm32           # add to esp
    # eax = next-stream-line-equal?(_test-stream, "def")
    # . . push args
    68/push  "def"/imm32
    68/push  _test-stream/imm32
    # . . call
    e8/call  next-stream-line-equal?/disp32
    # . . discard args
    81          0/subop/add         3/mod/direct    4/rm32/esp    .           .             .           .           .               8/imm32           # add to esp
    # check-ints-equal(eax, 1, msg)
    # . . push args
    68/push  "F - test-next-stream-line-equal-skips-newline"/imm32
    68/push  1/imm32
    50/push-eax
    # . . call
    e8/call  check-ints-equal/disp32
    # . . discard args
    81          0/subop/add         3/mod/direct    4/rm32/esp    .           .             .           .           .               0xc/imm32         # add to esp
    # . epilog
    89/copy                         3/mod/direct    4/rm32/esp    .           .             .           5/r32/ebp   .               .                 # copy ebp to esp
    5d/pop-to-ebp
    c3/return

test-next-stream-line-equal-handles-final-line:
    # . prolog
    55/push-ebp
    89/copy                         3/mod/direct    5/rm32/ebp    .           .             .           4/r32/esp   .               .                 # copy esp to ebp
    # clear-stream(_test-stream)
    # . . push args
    68/push  _test-stream/imm32
    # . . call
    e8/call  clear-stream/disp32
    # . . discard args
    81          0/subop/add         3/mod/direct    4/rm32/esp    .           .             .           .           .               4/imm32           # add to esp
    # write(_test-stream, "Abc\ndef")
    # . . push args
    68/push  "Abc\ndef"/imm32
    68/push  _test-stream/imm32
    # . . call
    e8/call  write/disp32
    # . . discard args
    81          0/subop/add         3/mod/direct    4/rm32/esp    .           .             .           .           .               8/imm32           # add to esp
    # next-stream-line-equal?(_test-stream, "Abc")
    # . . push args
    68/push  "Abc"/imm32
    68/push  _test-stream/imm32
    # . . call
    e8/call  next-stream-line-equal?/disp32
    # . . discard args
    81          0/subop/add         3/mod/direct    4/rm32/esp    .           .             .           .           .               8/imm32           # add to esp
    # eax = next-stream-line-equal?(_test-stream, "def")
    # . . push args
    68/push  "def"/imm32
    68/push  _test-stream/imm32
    # . . call
    e8/call  next-stream-line-equal?/disp32
    # . . discard args
    81          0/subop/add         3/mod/direct    4/rm32/esp    .           .             .           .           .               8/imm32           # add to esp
    # check-ints-equal(eax, 1, msg)
    # . . push args
    68/push  "F - test-next-stream-line-equal-skips-newline"/imm32
    68/push  1/imm32
    50/push-eax
    # . . call
    e8/call  check-ints-equal/disp32
    # . . discard args
    81          0/subop/add         3/mod/direct    4/rm32/esp    .           .             .           .           .               0xc/imm32         # add to esp
    # . epilog
    89/copy                         3/mod/direct    4/rm32/esp    .           .             .           5/r32/ebp   .               .                 # copy ebp to esp
    5d/pop-to-ebp
    c3/return

test-next-stream-line-equal-always-fails-after-Eof:
    # . prolog
    55/push-ebp
    89/copy                         3/mod/direct    5/rm32/ebp    .           .             .           4/r32/esp   .               .                 # copy esp to ebp
    # clear-stream(_test-stream)
    # . . push args
    68/push  _test-stream/imm32
    # . . call
    e8/call  clear-stream/disp32
    # . . discard args
    81          0/subop/add         3/mod/direct    4/rm32/esp    .           .             .           .           .               4/imm32           # add to esp
    # write nothing
    # eax = next-stream-line-equal?(_test-stream, "")
    # . . push args
    68/push  ""/imm32
    68/push  _test-stream/imm32
    # . . call
    e8/call  next-stream-line-equal?/disp32
    # . . discard args
    81          0/subop/add         3/mod/direct    4/rm32/esp    .           .             .           .           .               8/imm32           # add to esp
    # check-ints-equal(eax, 0, msg)
    # . . push args
    68/push  "F - test-next-stream-line-equal-always-fails-after-Eof"/imm32
    68/push  1/imm32
    50/push-eax
    # . . call
    e8/call  check-ints-equal/disp32
    # . . discard args
    81          0/subop/add         3/mod/direct    4/rm32/esp    .           .             .           .           .               0xc/imm32         # add to esp
    # eax = next-stream-line-equal?(_test-stream, "")
    # . . push args
    68/push  ""/imm32
    68/push  _test-stream/imm32
    # . . call
    e8/call  next-stream-line-equal?/disp32
    # . . discard args
    81          0/subop/add         3/mod/direct    4/rm32/esp    .           .             .           .           .               8/imm32           # add to esp
    # check-ints-equal(eax, 0, msg)
    # . . push args
    68/push  "F - test-next-stream-line-equal-always-fails-after-Eof/2"/imm32
    68/push  1/imm32
    50/push-eax
    # . . call
    e8/call  check-ints-equal/disp32
    # . . discard args
    81          0/subop/add         3/mod/direct    4/rm32/esp    .           .             .           .           .               0xc/imm32         # add to esp
    # . epilog
    89/copy                         3/mod/direct    4/rm32/esp    .           .             .           5/r32/ebp   .               .                 # copy ebp to esp
    5d/pop-to-ebp
    c3/return

# helper for later tests
check-next-stream-line-equal:
    # . prolog
    55/push-ebp
    89/copy                         3/mod/direct    5/rm32/ebp    .           .             .           4/r32/esp   .               .                 # copy esp to ebp
    # . save registers
    50/push-eax
    # eax = next-stream-line-equal?(f, s)
    # . . push args
    ff          6/subop/push        1/mod/*+disp8   5/rm32/ebp    .           .             .           .           0xc/disp8       .                 # push *(ebp+12)
    ff          6/subop/push        1/mod/*+disp8   5/rm32/ebp    .           .             .           .           8/disp8         .                 # push *(ebp+8)
    # . . call
    e8/call  next-stream-line-equal?/disp32
    # . . discard args
    81          0/subop/add         3/mod/direct    4/rm32/esp    .           .             .           .           .               8/imm32           # add to esp
    # check-ints-equal(eax, 1, msg)
    # . . push args
    ff          6/subop/push        1/mod/*+disp8   5/rm32/ebp    .           .             .           .           0x10/disp8      .                 # push *(ebp+16)
    68/push  1/imm32
    50/push-eax
    # . . call
    e8/call  check-ints-equal/disp32
    # . . discard args
    81          0/subop/add         3/mod/direct    4/rm32/esp    .           .             .           .           .               0xc/imm32         # add to esp
    # . restore registers
    58/pop-to-eax
    # . epilog
    89/copy                         3/mod/direct    4/rm32/esp    .           .             .           5/r32/ebp   .               .                 # copy ebp to esp
    5d/pop-to-ebp
    c3/return

# . . vim:nowrap:textwidth=0