4949

1 files changed, 0 insertions, 126 deletions

diff --git a/subx/068new-stream.subx b/subx/068new-stream.subx
deleted file mode 100644
index 2020229d..00000000
--- a/subx/068new-stream.subx
+++ /dev/null
@@ -1,126 +0,0 @@
-# Helper to allocate a stream on the heap.
-#
-# We'll now start gingerly supporting streams containing arbitrary types.
-
-== 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
-
-# main:
-    e8/call  run-tests/disp32  # 'run-tests' is a function created automatically by SubX. It calls all functions that start with 'test-'.
-    # syscall(exit, Num-test-failures)
-    8b/copy                         0/mod/indirect  5/rm32/.disp32            .             .           3/r32/EBX   Num-test-failures/disp32          # copy *Num-test-failures to EBX
-    b8/copy-to-EAX  1/imm32/exit
-    cd/syscall  0x80/imm8
-
-new-stream:  # ad : (address allocation-descriptor), length : int, elemsize : int -> address/EAX
-    # . prolog
-    55/push-EBP
-    89/copy                         3/mod/direct    5/rm32/EBP    .           .             .           4/r32/ESP   .               .                 # copy ESP to EBP
-    # . save registers
-    52/push-EDX
-    # n = elemsize * length + 12 (for read, write and length)
-    # . EAX = elemsize
-    8b/copy                         1/mod/*+disp8   5/rm32/EBP    .           .             .           0/r32/EAX   0x10/disp8      .                 # copy *(EBP+16) to EAX
-    # . EAX *= length
-    31/xor                          3/mod/direct    2/rm32/EDX    .           .             .           2/r32/EDX   .               .                 # clear EDX
-    f7          4/subop/multiply    1/mod/*+disp8   5/rm32/EBP    .           .                                     0xc/disp8       .                 # multiply *(EBP+12) into EAX
-    # . if overflow abort
-    81          7/subop/compare     3/mod/direct    2/rm32/EDX    .           .             .           .           .               0/imm32           # compare EDX
-    75/jump-if-not-equal  $new-stream:abort/disp8
-    # . EDX = elemsize*length
-    89/copy                         3/mod/direct    2/rm32/EDX    .           .             .           0/r32/EAX   .               .                 # copy EAX to EDX
-    # . EAX += 12
-    05/add-to-EAX  0xc/imm32
-    # allocate(ad, n)
-    # . . push args
-    50/push-EAX
-    ff          6/subop/push        1/mod/*+disp8   5/rm32/EBP    .           .             .           .           8/disp8         .                 # push *(EBP+8)
-    # . . call
-    e8/call  allocate/disp32
-    # . . discard args
-    81          0/subop/add         3/mod/direct    4/rm32/ESP    .           .             .           .           .               8/imm32           # add to ESP
-    # EAX->length = elemsize*length
-    89/copy                         1/mod/*+disp8   0/rm32/EAX    .           .             .           2/r32/EDX   8/disp8         .                 # copy EDX to *(EAX+8)
-    # clear-stream(EAX)
-    # . . push args
-    50/push-EAX
-    # . . call
-    e8/call  clear-stream/disp32
-    # . . discard args
-    81          0/subop/add         3/mod/direct    4/rm32/ESP    .           .             .           .           .               4/imm32           # add to ESP
-$new-stream:end:
-    # . restore registers
-    5a/pop-to-EDX
-    # . epilog
-    89/copy                         3/mod/direct    4/rm32/ESP    .           .             .           5/r32/EBP   .               .                 # copy EBP to ESP
-    5d/pop-to-EBP
-    c3/return
-
-$new-stream:abort:
-    # . _write(2/stderr, error)
-    # . . push args
-    68/push  "new-stream: size too large"/imm32
-    68/push  2/imm32/stderr
-    # . . call
-    e8/call  _write/disp32
-    # . . discard args
-    81          0/subop/add         3/mod/direct    4/rm32/ESP    .           .             .           .           .               8/imm32           # add to ESP
-    # . syscall(exit, 1)
-    bb/copy-to-EBX  1/imm32
-    b8/copy-to-EAX  1/imm32/exit
-    cd/syscall  0x80/imm8
-    # never gets here
-
-test-new-stream:
-    # . prolog
-    55/push-EBP
-    89/copy                         3/mod/direct    5/rm32/EBP    .           .             .           4/r32/ESP   .               .                 # copy ESP to EBP
-    # var ad/ECX : (address allocation-descriptor) = allocate-region(Heap, 512)
-    # . EAX = allocate-region(Heap, 512)
-    # . . push args
-    68/push  0x200/imm32
-    68/push  Heap/imm32
-    # . . call
-    e8/call  allocate-region/disp32
-    # . . discard args
-    81          0/subop/add         3/mod/direct    4/rm32/ESP    .           .             .           .           .               8/imm32           # add to ESP
-    # . ECX = EAX
-    89/copy                         3/mod/direct    1/rm32/ECX    .           .             .           0/r32/EAX   .               .                 # copy EAX to ECX
-    # var start/EDX = ad->curr
-    8b/copy                         0/mod/indirect  1/rm32/ECX    .           .             .           2/r32/EDX   .               .                 # copy *ECX to EDX
-    # EAX = new-stream(ad, 3, 2)
-    # . . push args
-    68/push  2/imm32
-    68/push  3/imm32
-    51/push-ECX
-    # . . call
-    e8/call  new-stream/disp32
-    # . . discard args
-    81          0/subop/add         3/mod/direct    4/rm32/ESP    .           .             .           .           .               0xc/imm32         # add to ESP
-    # check-ints-equal(EAX, EDX, msg)
-    # . . push args
-    68/push  "F - test-new-stream: returns current pointer of allocation descriptor"/imm32
-    52/push-EDX
-    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-ints-equal(EAX->length, 6, msg)
-    # . . push args
-    68/push  "F - test-new-stream: sets length correctly"/imm32
-    68/push  6/imm32
-    ff          6/subop/push        1/mod/*+disp8   0/rm32/EAX    .           .             .           .           .               8/disp8           # push *(EAX+8)
-    # . . call
-    e8/call  check-ints-equal/disp32
-    # . . discard args
-    81          0/subop/add         3/mod/direct    4/rm32/ESP    .           .             .           .           .               0xc/imm32         # add to ESP
-    # the rest is delegated to clear-stream() so we won't bother checking it
-    # . 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