diff options
| author | Kartik Agaram <vc@akkartik.com> | 2019-08-26 11:55:26 -0700 |
|---|---|---|
| committer | Kartik Agaram <vc@akkartik.com> | 2019-08-26 11:59:21 -0700 |
| commit | 333525360b22f3d3ea31db46a4d2f1b4edbfebdb (patch) | |
| tree | ed255f308542ba28a99d862d54d4992dcf749622 /070new-stream.subx | |
| parent | 22fb844ba4edf14eb85245a35f42e721658c4f8e (diff) | |
| download | mu-333525360b22f3d3ea31db46a4d2f1b4edbfebdb.tar.gz | |
5592 - switch register names to lowercase
Diffstat (limited to '070new-stream.subx')
| -rw-r--r-- | 070new-stream.subx | 96 |
1 files changed, 48 insertions, 48 deletions
diff --git a/070new-stream.subx b/070new-stream.subx index b6934b1e..c3f204d2 100644 --- a/070new-stream.subx +++ b/070new-stream.subx @@ -5,48 +5,48 @@ # . 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 -new-stream: # ad : (address allocation-descriptor), length : int, elemsize : int -> address/EAX +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 + 55/push-ebp + 89/copy 3/mod/direct 5/rm32/ebp . . . 4/r32/esp . . # copy esp to ebp # . save registers - 52/push-EDX + 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 + # . 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 + 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 + # . 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) + 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) + 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 + 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 + 81 0/subop/add 3/mod/direct 4/rm32/esp . . . . . 4/imm32 # add to esp $new-stream:end: # . restore registers - 5a/pop-to-EDX + 5a/pop-to-edx # . epilog - 89/copy 3/mod/direct 4/rm32/ESP . . . 5/r32/EBP . . # copy EBP to ESP - 5d/pop-to-EBP + 89/copy 3/mod/direct 4/rm32/esp . . . 5/r32/ebp . . # copy ebp to esp + 5d/pop-to-ebp c3/return $new-stream:abort: @@ -57,62 +57,62 @@ $new-stream:abort: # . . call e8/call _write/disp32 # . . discard args - 81 0/subop/add 3/mod/direct 4/rm32/ESP . . . . . 8/imm32 # add to ESP + 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 + 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 heap/ECX : (address allocation-descriptor) = {0, 0} + 55/push-ebp + 89/copy 3/mod/direct 5/rm32/ebp . . . 4/r32/esp . . # copy esp to ebp + # var heap/ecx : (address allocation-descriptor) = {0, 0} 68/push 0/imm32/limit 68/push 0/imm32/curr - 89/copy 3/mod/direct 1/rm32/ECX . . . 4/r32/ESP . . # copy ESP to ECX + 89/copy 3/mod/direct 1/rm32/ecx . . . 4/r32/esp . . # copy esp to ecx # heap = new-segment(512) # . . push args - 51/push-ECX + 51/push-ecx 68/push 0x200/imm32 # . . call e8/call new-segment/disp32 # . . discard args - 81 0/subop/add 3/mod/direct 4/rm32/ESP . . . . . 8/imm32 # add to ESP - # var start/EDX = ad->curr - 8b/copy 0/mod/indirect 1/rm32/ECX . . . 2/r32/EDX . . # copy *ECX to EDX - # EAX = new-stream(heap, 3, 2) + 81 0/subop/add 3/mod/direct 4/rm32/esp . . . . . 8/imm32 # add to esp + # var start/edx = ad->curr + 8b/copy 0/mod/indirect 1/rm32/ecx . . . 2/r32/edx . . # copy *ecx to edx + # eax = new-stream(heap, 3, 2) # . . push args 68/push 2/imm32 68/push 3/imm32 - 51/push-ECX + 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) + 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 + 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) + 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) + 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 + 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 + 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 |