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 /065write-buffered.subx | |
| parent | 22fb844ba4edf14eb85245a35f42e721658c4f8e (diff) | |
| download | mu-333525360b22f3d3ea31db46a4d2f1b4edbfebdb.tar.gz | |
5592 - switch register names to lowercase
Diffstat (limited to '065write-buffered.subx')
| -rw-r--r-- | 065write-buffered.subx | 142 |
1 files changed, 71 insertions, 71 deletions
diff --git a/065write-buffered.subx b/065write-buffered.subx index 88b14b2d..a0161d45 100644 --- a/065write-buffered.subx +++ b/065write-buffered.subx @@ -19,89 +19,89 @@ write-buffered: # f : (address buffered-file), msg : (address array byte) -> <v # ++in # # registers: - # in: ESI - # inend: ECX - # f: EDI - # f->length: EDX - # f->write: EBX (cached; need to keep in sync) - # c: EAX + # in: esi + # inend: ecx + # f: edi + # f->length: edx + # f->write: ebx (cached; need to keep in sync) + # c: 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 - 50/push-EAX - 51/push-ECX - 52/push-EDX - 53/push-EBX - 56/push-ESI - 57/push-EDI - # EAX = msg - 8b/copy 1/mod/*+disp8 5/rm32/EBP . . 0/r32/EAX 0xc/disp8 . # copy *(EBP+12) to EAX - # in/ESI = msg->data - 8d/copy-address 1/mod/*+disp8 0/rm32/EAX . . . 6/r32/ESI 4/disp8 . # copy EAX+4 to ESI - # inend/ECX = &msg->data[msg->length] - 8b/copy 0/mod/indirect 0/rm32/EAX . . . 1/r32/ECX . . # copy *EAX to ECX - 8d/copy-address 0/mod/indirect 4/rm32/sib 6/base/ESI 1/index/ECX . 1/r32/ECX . . # copy ESI+ECX to ECX - # EDI = f - 8b/copy 1/mod/*+disp8 5/rm32/EBP . . 7/r32/EDI 8/disp8 . # copy *(EBP+8) to EDI - # EDX = f->length - 8b/copy 1/mod/*+disp8 7/rm32/EDI . . . 2/r32/EDX 0xc/disp8 . # copy *(EDI+12) to EDX - # EBX = f->write - 8b/copy 1/mod/*+disp8 7/rm32/EDI . . . 3/r32/EBX 4/disp8 . # copy *(EDI+4) to EBX + 50/push-eax + 51/push-ecx + 52/push-edx + 53/push-ebx + 56/push-esi + 57/push-edi + # eax = msg + 8b/copy 1/mod/*+disp8 5/rm32/ebp . . 0/r32/eax 0xc/disp8 . # copy *(ebp+12) to eax + # in/esi = msg->data + 8d/copy-address 1/mod/*+disp8 0/rm32/eax . . . 6/r32/esi 4/disp8 . # copy eax+4 to esi + # inend/ecx = &msg->data[msg->length] + 8b/copy 0/mod/indirect 0/rm32/eax . . . 1/r32/ecx . . # copy *eax to ecx + 8d/copy-address 0/mod/indirect 4/rm32/sib 6/base/esi 1/index/ecx . 1/r32/ecx . . # copy esi+ecx to ecx + # edi = f + 8b/copy 1/mod/*+disp8 5/rm32/ebp . . 7/r32/edi 8/disp8 . # copy *(ebp+8) to edi + # edx = f->length + 8b/copy 1/mod/*+disp8 7/rm32/edi . . . 2/r32/edx 0xc/disp8 . # copy *(edi+12) to edx + # ebx = f->write + 8b/copy 1/mod/*+disp8 7/rm32/edi . . . 3/r32/ebx 4/disp8 . # copy *(edi+4) to ebx $write-buffered:loop: # if (in >= inend) break - 39/compare 3/mod/direct 6/rm32/ESI . . . 1/r32/ECX . . # compare ESI with ECX + 39/compare 3/mod/direct 6/rm32/esi . . . 1/r32/ecx . . # compare esi with ecx 73/jump-if-greater-or-equal-unsigned $write-buffered:loop-end/disp8 # if (f->write >= f->length) flush and clear f's stream - 39/compare 3/mod/direct 3/rm32/EBX . . . 2/r32/EDX . . # compare EBX with EDX + 39/compare 3/mod/direct 3/rm32/ebx . . . 2/r32/edx . . # compare ebx with edx 7c/jump-if-lesser $write-buffered:to-stream/disp8 # . persist f->write - 89/copy 1/mod/*+disp8 7/rm32/EDI . . . 3/r32/EBX 4/disp8 . # copy EBX to *(EDI+4) + 89/copy 1/mod/*+disp8 7/rm32/edi . . . 3/r32/ebx 4/disp8 . # copy ebx to *(edi+4) # . flush(f) # . . push args - 57/push-EDI + 57/push-edi # . . call e8/call flush/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 # . clear-stream(stream = f+4) # . . push args - 8d/copy-address 1/mod/*+disp8 7/rm32/EDI . . . 0/r32/EAX 4/disp8 . # copy EDI+4 to EAX - 50/push-EAX + 8d/copy-address 1/mod/*+disp8 7/rm32/edi . . . 0/r32/eax 4/disp8 . # copy edi+4 to 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 - # . f->write must now be 0; update its cache at EBX - 31/xor 3/mod/direct 3/rm32/EBX . . . 3/r32/EBX . . # clear EBX + 81 0/subop/add 3/mod/direct 4/rm32/esp . . . . . 4/imm32 # add to esp + # . f->write must now be 0; update its cache at ebx + 31/xor 3/mod/direct 3/rm32/ebx . . . 3/r32/ebx . . # clear ebx $write-buffered:to-stream: # write to stream # f->data[f->write] = *in # . AL = *in - 31/xor 3/mod/direct 0/rm32/EAX . . . 0/r32/EAX . . # clear EAX - 8a/copy-byte 0/mod/indirect 6/rm32/ESI . . . 0/r32/AL . . # copy byte at *ESI to AL + 31/xor 3/mod/direct 0/rm32/eax . . . 0/r32/eax . . # clear eax + 8a/copy-byte 0/mod/indirect 6/rm32/esi . . . 0/r32/AL . . # copy byte at *esi to AL # . f->data[f->write] = AL - 88/copy-byte 1/mod/*+disp8 4/rm32/sib 7/base/EDI 3/index/EBX . 0/r32/AL 0x10/disp8 . # copy AL to *(EDI+EBX+16) + 88/copy-byte 1/mod/*+disp8 4/rm32/sib 7/base/edi 3/index/ebx . 0/r32/AL 0x10/disp8 . # copy AL to *(edi+ebx+16) # ++f->write - 43/increment-EBX + 43/increment-ebx # ++in - 46/increment-ESI + 46/increment-esi eb/jump $write-buffered:loop/disp8 $write-buffered:loop-end: # persist necessary variables from registers - 89/copy 1/mod/*+disp8 7/rm32/EDI . . . 3/r32/EBX 4/disp8 . # copy EBX to *(EDI+4) + 89/copy 1/mod/*+disp8 7/rm32/edi . . . 3/r32/ebx 4/disp8 . # copy ebx to *(edi+4) $write-buffered:end: # . restore registers - 5f/pop-to-EDI - 5e/pop-to-ESI - 5b/pop-to-EBX - 5a/pop-to-EDX - 59/pop-to-ECX - 58/pop-to-EAX + 5f/pop-to-edi + 5e/pop-to-esi + 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 + 89/copy 3/mod/direct 4/rm32/esp . . . 5/r32/ebp . . # copy ebp to esp + 5d/pop-to-ebp c3/return test-write-buffered: @@ -113,16 +113,16 @@ test-write-buffered: # . . 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 # . clear-stream(_test-buffered-file+4) # . . push args - b8/copy-to-EAX _test-buffered-file/imm32 - 05/add-to-EAX 4/imm32 - 50/push-EAX + b8/copy-to-eax _test-buffered-file/imm32 + 05/add-to-eax 4/imm32 + 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 # write-buffered(_test-buffered-file, "Abc") # . . push args 68/push "Abc"/imm32 @@ -130,14 +130,14 @@ test-write-buffered: # . . call e8/call write-buffered/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 # flush(_test-buffered-file) # . . push args 68/push _test-buffered-file/imm32 # . . call e8/call flush/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 # check-stream-equal(_test-stream, "Abc", msg) # . . push args 68/push "F - test-write-buffered-single"/imm32 @@ -146,7 +146,7 @@ test-write-buffered: # . . call e8/call check-stream-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 # . end c3/return @@ -159,16 +159,16 @@ test-write-buffered-with-intermediate-flush: # . . 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 # . clear-stream(_test-buffered-file+4) # . . push args - b8/copy-to-EAX _test-buffered-file/imm32 - 05/add-to-EAX 4/imm32 - 50/push-EAX + b8/copy-to-eax _test-buffered-file/imm32 + 05/add-to-eax 4/imm32 + 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 # _test-stream can hold 8 bytes, but _test-buffered-file can hold only 6. # Try to write 7 bytes. # . write-buffered(_test-buffered-file, "Abcdefg") @@ -178,7 +178,7 @@ test-write-buffered-with-intermediate-flush: # . . call e8/call write-buffered/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 # don't flush # 6 bytes should still have gotten to _test-stream # . check-ints-equal(*_test-stream->write, 6, msg) @@ -186,24 +186,24 @@ test-write-buffered-with-intermediate-flush: 68/push "F - test-write-buffered-with-intermediate-flush: flushed data"/imm32 68/push 6/imm32 # . . push *_test-stream->write - b8/copy-to-EAX _test-stream/imm32 - ff 6/subop/push 0/mod/indirect 0/rm32/EAX . . . . . . # push *EAX + b8/copy-to-eax _test-stream/imm32 + ff 6/subop/push 0/mod/indirect 0/rm32/eax . . . . . . # 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 + 81 0/subop/add 3/mod/direct 4/rm32/esp . . . . . 0xc/imm32 # add to esp # and 1 byte should still be in _test-buffered-file # . check-ints-equal(*_test-buffered-file->write, 1, msg) # . . push args 68/push "F - test-write-buffered-with-intermediate-flush: unflushed bytes"/imm32 68/push 1/imm32 # . . push *_test-buffered-file->write - b8/copy-to-EAX _test-buffered-file/imm32 - ff 6/subop/push 1/mod/*+disp8 0/rm32/EAX . . . . 4/disp8 . # push *(EAX+4) + b8/copy-to-eax _test-buffered-file/imm32 + ff 6/subop/push 1/mod/*+disp8 0/rm32/eax . . . . 4/disp8 . # push *(eax+4) # . . 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 # . end c3/return |