diff options
author | Kartik Agaram <vc@akkartik.com> | 2019-09-19 21:01:43 -0700 |
---|---|---|
committer | Kartik Agaram <vc@akkartik.com> | 2019-09-19 23:25:49 -0700 |
commit | fd91f7f61bfa84cbc24590d5394d75891cc1cfcc (patch) | |
tree | 6cbaebc23ed7c3b8627dac22e7054f14c4d38fe9 /089write-int.subx | |
parent | 881c7f02708ceaef54a0d8b5fcc136a3003d3e09 (diff) | |
download | mu-fd91f7f61bfa84cbc24590d5394d75891cc1cfcc.tar.gz |
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.
Diffstat (limited to '089write-int.subx')
-rw-r--r-- | 089write-int.subx | 119 |
1 files changed, 0 insertions, 119 deletions
diff --git a/089write-int.subx b/089write-int.subx deleted file mode 100644 index 29ba8d2a..00000000 --- a/089write-int.subx +++ /dev/null @@ -1,119 +0,0 @@ -# write-int: add a single int byte to a stream - -== code - -write-int: # out : (address stream), n : int -> <void> - # . 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 - 57/push-edi - # edi = out - 8b/copy 1/mod/*+disp8 5/rm32/ebp . . . 7/r32/edi 8/disp8 . # copy *(ebp+8) to edi - # ecx = out->write - 8b/copy 0/mod/indirect 7/rm32/edi . . . 1/r32/ecx . . # copy *edi to ecx - # if (out->write >= out->length) abort - 3b/compare 1/mod/*+disp8 7/rm32/edi . . . 1/r32/ecx 8/disp8 . # compare ecx with *(edi+8) - 7d/jump-if-greater-or-equal $write-int:abort/disp8 -$write-int:to-stream: - # out->data[out->write] = n - 8b/copy 1/mod/*+disp8 5/rm32/ebp . . . 0/r32/eax 0xc/disp8 . # copy *(ebp+12) to eax - 89/copy 1/mod/*+disp8 4/rm32/sib 7/base/edi 1/index/ecx . 0/r32/eax 0xc/disp8 . # copy eax to *(edi+ecx+12) - # out->write += 4 - 81 0/subop/add 0/mod/indirect 7/rm32/edi . . . . . 4/imm32 # add to *edi -$write-int:end: - # . restore registers - 5f/pop-to-edi - 59/pop-to-ecx - 58/pop-to-eax - # . epilog - 89/copy 3/mod/direct 4/rm32/esp . . . 5/r32/ebp . . # copy ebp to esp - 5d/pop-to-ebp - c3/return - -$write-int:abort: - # . _write(2/stderr, error) - # . . push args - 68/push "write-int: 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-write-int-single: - # - check that write-int writes to first int of 'stream' - # 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 - # write-int(_test-stream, "abcd") - # . . push args - 68/push 0x64636261/imm32 - 68/push _test-stream/imm32 - # . . call - e8/call write-int/disp32 - # . . discard args - 81 0/subop/add 3/mod/direct 4/rm32/esp . . . . . 8/imm32 # add to esp - # check-stream-equal(_test-stream, "abcd", msg) - # . . push args - 68/push "F - test-write-int-single"/imm32 - 68/push "abcd"/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-write-byte-buffered-multiple: - # - check that write-int correctly appends multiple writes - # 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 - # write-int(_test-stream, "abcd") - # . . push args - 68/push 0x64636261/imm32 - 68/push _test-stream/imm32 - # . . call - e8/call write-int/disp32 - # . . discard args - 81 0/subop/add 3/mod/direct 4/rm32/esp . . . . . 8/imm32 # add to esp - # write-int(_test-stream, "efgh") - # . . push args - 68/push 0x68676665/imm32 - 68/push _test-stream/imm32 - # . . call - e8/call write-int/disp32 - # . . discard args - 81 0/subop/add 3/mod/direct 4/rm32/esp . . . . . 8/imm32 # add to esp - # check-stream-equal(_test-stream, "abcdefgh", msg) - # . . push args - 68/push "F - test-write-byte-buffered-multiple"/imm32 - 68/push "abcdefgh"/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 |