5675 - move helpers from subx-common into layers

This undoes 5672 in favor of a new plan:

Layers 000 - 099 are for running without syntax sugar. We use them for
building syntax-sugar passes.

Layers 100 and up are for running with all syntax sugar.

The layers are arranged in approximate order so more phases rely on earlier
layers than later ones.

I plan to not use intermediate syntax sugar (just sigils without calls,
or sigils and calls without braces) anywhere except in the specific passes
implementing them.

1 files changed, 0 insertions, 307 deletions

diff --git a/084print-int-decimal.subx b/084print-int-decimal.subx
deleted file mode 100644
index f7898fe9..00000000
--- a/084print-int-decimal.subx
+++ /dev/null
@@ -1,307 +0,0 @@
-# Helper to print an int32 in decimal.
-
-== 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
-
-print-int32-decimal:  # out : (address stream), n : int32
-    # works by generating characters from lowest to highest and pushing them
-    # to the stack, before popping them one by one into the stream
-    #
-    # pseudocode:
-    #   push sentinel
-    #   eax = abs(n)
-    #   while true
-    #     sign-extend eax into edx
-    #     eax, edx = eax/10, eax%10
-    #     edx += '0'
-    #     push edx
-    #     if (eax == 0) break
-    #   if n < 0
-    #     push '-'
-    #   w = out->write
-    #   curr = &out->data[out->write]
-    #   max = &out->data[out->length]
-    #   while true
-    #     pop into eax
-    #     if (eax == sentinel) break
-    #     if (curr >= max) abort
-    #     *curr = AL
-    #     ++curr
-    #     ++w
-    #   out->write = w
-    # (based on K&R itoa: https://en.wikibooks.org/wiki/C_Programming/stdlib.h/itoa)
-    # (this pseudocode contains registers because operations like division
-    # require specific registers in x86)
-    #
-    # . prolog
-    55/push-ebp
-    89/copy                         3/mod/direct    5/rm32/ebp    .           .             .           4/r32/esp   .               .                 # copy esp to ebp
-    # . save registers
-    50/push-eax
-    51/push-ecx
-    52/push-edx
-    53/push-ebx
-    57/push-edi
-    # ten/ecx = 10
-    b9/copy-to-ecx  0xa/imm32
-    # push sentinel
-    68/push  0/imm32/sentinel
-    # eax = abs(n)
-    8b/copy                         1/mod/*+disp8   5/rm32/ebp    .           .             .           0/r32/eax   0xc/disp8       .                 # copy *(ebp+12) to eax
-    3d/compare-eax-with  0/imm32
-    7d/jump-if-greater-or-equal  $print-int32-decimal:read-loop/disp8
-$print-int32-decimal:negative:
-    f7          3/subop/negate      3/mod/direct    0/rm32/eax    .           .             .           .           .               .                 # negate eax
-$print-int32-decimal:read-loop:
-    # eax, edx = eax / 10, eax % 10
-    99/sign-extend-eax-into-edx
-    f7          7/subop/idiv        3/mod/direct    1/rm32/ecx    .           .             .           .           .               .                 # divide edx:eax by ecx, storing quotient in eax and remainder in edx
-    # edx += '0'
-    81          0/subop/add         3/mod/direct    2/rm32/edx    .           .             .           .           .               0x30/imm32        # add to edx
-    # push edx
-    52/push-edx
-    # if (eax == 0) break
-    3d/compare-eax-and  0/imm32
-    7f/jump-if-greater  $print-int32-decimal:read-loop/disp8
-$print-int32-decimal:read-break:
-    # if (n < 0) push('-')
-    81          7/subop/compare     1/mod/*+disp8   5/rm32/ebp    .           .             .           .           0xc/disp8       0/imm32           # compare *(ebp+12)
-    7d/jump-if-greater-or-equal  $print-int32-decimal:write/disp8
-$print-int32-decimal:push-negative:
-    68/push  0x2d/imm32/-
-$print-int32-decimal:write:
-    # edi = out
-    8b/copy                         1/mod/*+disp8   5/rm32/ebp    .           .             .           7/r32/edi   8/disp8         .                 # copy *(ebp+8) to edi
-    # w/edx = out->write
-    8b/copy                         0/mod/indirect  7/rm32/edi    .           .             .           2/r32/edx   .               .                 # copy *edi to edx
-    # curr/ecx = &out->data[out->write]
-    8d/copy-address                 1/mod/*+disp8   4/rm32/sib    7/base/edi  2/index/edx   .           1/r32/ecx   0xc/disp8       .                 # copy ebx+edx+12 to ecx
-    # max/ebx = &out->data[out->length]
-    8b/copy                         1/mod/*+disp8   7/rm32/edi    .           .             .           3/r32/ebx   8/disp8         .                 # copy *(edi+8) to ebx
-    8d/copy-address                 1/mod/*+disp8   4/rm32/sib    7/base/edi  3/index/ebx   .           3/r32/ebx   0xc/disp8       .                 # copy edi+ebx+12 to ebx
-$print-int32-decimal:write-loop:
-    # pop into eax
-    58/pop-to-eax
-    # if (eax == sentinel) break
-    3d/compare-eax-and  0/imm32/sentinel
-    74/jump-if-equal  $print-int32-decimal:write-break/disp8
-    # if (curr >= max) abort
-    39/compare                      3/mod/direct    1/rm32/ecx    .           .             .           3/r32/ebx   .               .                 # compare ecx with ebx
-    73/jump-if-greater-or-equal-unsigned  $print-int32-decimal:abort/disp8
-$print-int32-decimal:write-char:
-    # *curr = AL
-    88/copy-byte                    0/mod/indirect  1/rm32/ecx    .           .             .           0/r32/AL    .               .                 # copy AL to byte at *ecx
-    # ++curr
-    41/increment-ecx
-    # ++w
-    42/increment-edx
-    eb/jump  $print-int32-decimal:write-loop/disp8
-$print-int32-decimal:write-break:
-    # out->write = w
-    89/copy                         0/mod/indirect  7/rm32/edi    .           .             .           2/r32/edx   .               .                 # copy edx to *edi
-$print-int32-decimal:end:
-    # . restore registers
-    5f/pop-to-edi
-    5b/pop-to-ebx
-    5a/pop-to-edx
-    59/pop-to-ecx
-    58/pop-to-eax
-    # . epilog
-    89/copy                         3/mod/direct    4/rm32/esp    .           .             .           5/r32/ebp   .               .                 # copy ebp to esp
-    5d/pop-to-ebp
-    c3/return
-
-$print-int32-decimal:abort:
-    # . _write(2/stderr, error)
-    # . . push args
-    68/push  "print-int32-decimal: out of space\n"/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-print-int32-decimal:
-    # - check that a single-digit number converts correctly
-    # setup
-    # . 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
-    # print-int32-decimal(_test-stream, 9)
-    # . . push args
-    68/push  9/imm32
-    68/push  _test-stream/imm32
-    # . . call
-    e8/call  print-int32-decimal/disp32
-    # . . discard args
-    81          0/subop/add         3/mod/direct    4/rm32/esp    .           .             .           .           .               8/imm32           # add to esp
-    # check-stream-equal(_test-stream, "9", msg)
-    # . . push args
-    68/push  "F - test-print-int32-decimal"/imm32
-    68/push  "9"/imm32
-    68/push  _test-stream/imm32
-    # . . call
-    e8/call  check-stream-equal/disp32
-    # . . discard args
-    81          0/subop/add         3/mod/direct    4/rm32/esp    .           .             .           .           .               0xc/imm32         # add to esp
-    # . end
-    c3/return
-
-test-print-int32-decimal-zero:
-    # - check that 0 converts correctly
-    # setup
-    # . 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
-    # print-int32-decimal(_test-stream, 0)
-    # . . push args
-    68/push  0/imm32
-    68/push  _test-stream/imm32
-    # . . call
-    e8/call  print-int32-decimal/disp32
-    # . . discard args
-    81          0/subop/add         3/mod/direct    4/rm32/esp    .           .             .           .           .               8/imm32           # add to esp
-    # check-stream-equal(_test-stream, "0", msg)
-    # . . push args
-    68/push  "F - test-print-int32-decimal-zero"/imm32
-    68/push  "0"/imm32
-    68/push  _test-stream/imm32
-    # . . call
-    e8/call  check-stream-equal/disp32
-    # . . discard args
-    81          0/subop/add         3/mod/direct    4/rm32/esp    .           .             .           .           .               0xc/imm32         # add to esp
-    # . end
-    c3/return
-
-test-print-int32-decimal-multiple-digits:
-    # - check that a multi-digit number converts correctly
-    # setup
-    # . 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
-    # print-int32-decimal(_test-stream, 10)
-    # . . push args
-    68/push  0xa/imm32
-    68/push  _test-stream/imm32
-    # . . call
-    e8/call  print-int32-decimal/disp32
-    # . . discard args
-    81          0/subop/add         3/mod/direct    4/rm32/esp    .           .             .           .           .               8/imm32           # add to esp
-    # check-stream-equal(_test-stream, "10", msg)
-    # . . push args
-    68/push  "F - test-print-int32-decimal-multiple-digits"/imm32
-    68/push  "10"/imm32
-    68/push  _test-stream/imm32
-    # . . call
-    e8/call  check-stream-equal/disp32
-    # . . discard args
-    81          0/subop/add         3/mod/direct    4/rm32/esp    .           .             .           .           .               0xc/imm32         # add to esp
-    # . end
-    c3/return
-
-test-print-int32-decimal-negative:
-    # - check that a negative single-digit number converts correctly
-    # setup
-    # . 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
-    # print-int32-decimal(_test-stream, -9)
-    # . . push args
-    68/push  -9/imm32
-    68/push  _test-stream/imm32
-    # . . call
-    e8/call  print-int32-decimal/disp32
-    # . . discard args
-    81          0/subop/add         3/mod/direct    4/rm32/esp    .           .             .           .           .               8/imm32           # add to esp
-#?     # dump _test-stream {{{
-#?     # . write(2/stderr, "^")
-#?     # . . push args
-#?     68/push  "^"/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
-#?     # . write-stream(2/stderr, _test-stream)
-#?     # . . push args
-#?     68/push  _test-stream/imm32
-#?     68/push  2/imm32/stderr
-#?     # . . call
-#?     e8/call  write-stream/disp32
-#?     # . . discard args
-#?     81          0/subop/add         3/mod/direct    4/rm32/esp    .           .             .           .           .               8/imm32           # add to esp
-#?     # . write(2/stderr, "$\n")
-#?     # . . push args
-#?     68/push  "$\n"/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
-#?     # }}}
-    # check-stream-equal(_test-stream, "-9", msg)
-    # . . push args
-    68/push  "F - test-print-int32-decimal-negative"/imm32
-    68/push  "-9"/imm32
-    68/push  _test-stream/imm32
-    # . . call
-    e8/call  check-stream-equal/disp32
-    # . . discard args
-    81          0/subop/add         3/mod/direct    4/rm32/esp    .           .             .           .           .               0xc/imm32         # add to esp
-    # . end
-    c3/return
-
-test-print-int32-decimal-negative-multiple-digits:
-    # - check that a multi-digit number converts correctly
-    # setup
-    # . 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
-    # print-int32-decimal(_test-stream, -10)
-    # . . push args
-    68/push  -0xa/imm32
-    68/push  _test-stream/imm32
-    # . . call
-    e8/call  print-int32-decimal/disp32
-    # . . discard args
-    81          0/subop/add         3/mod/direct    4/rm32/esp    .           .             .           .           .               8/imm32           # add to esp
-    # check-stream-equal(_test-stream, "-10", msg)
-    # . . push args
-    68/push  "F - test-print-int32-decimal-negative-multiple-digits"/imm32
-    68/push  "-10"/imm32
-    68/push  _test-stream/imm32
-    # . . call
-    e8/call  check-stream-equal/disp32
-    # . . discard args
-    81          0/subop/add         3/mod/direct    4/rm32/esp    .           .             .           .           .               0xc/imm32         # add to esp
-    # . end
-    c3/return
-
-# . . vim:nowrap:textwidth=0