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| author | Kartik Agaram <github@akkartik.com> | 2019-07-13 19:50:49 -0700 |
|---|---|---|
| committer | GitHub <noreply@github.com> | 2019-07-13 19:50:49 -0700 |
| commit | c4aa819a5d651554b3a5cc52b67cac36889cada8 (patch) | |
| tree | 328f7daeb3960d45cdbfa002f05fdc11617df0b4 /subx/075array-equal.subx | |
| parent | cdf85518dfb364d816e0db1448e20bf30b2b65f9 (diff) | |
| parent | 7f23be0107af59f37a948151eefe9c4d39ddf96e (diff) | |
| download | mu-c4aa819a5d651554b3a5cc52b67cac36889cada8.tar.gz | |
Merge pull request #34 from akkartik/survey
SubX in SubX: computing addresses for labels
Diffstat (limited to 'subx/075array-equal.subx')
| -rw-r--r-- | subx/075array-equal.subx | 629 |
1 files changed, 629 insertions, 0 deletions
diff --git a/subx/075array-equal.subx b/subx/075array-equal.subx new file mode 100644 index 00000000..60694829 --- /dev/null +++ b/subx/075array-equal.subx @@ -0,0 +1,629 @@ +# Comparing arrays of numbers. + +== 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 + +Entry: + # initialize heap + # . Heap = new-segment(64KB) + # . . push args + 68/push Heap/imm32 + 68/push 0x10000/imm32/64KB + # . . call + e8/call new-segment/disp32 + # . . discard args + 81 0/subop/add 3/mod/direct 4/rm32/ESP . . . . . 8/imm32 # add to ESP + + e8/call run-tests/disp32 # 'run-tests' is a function created automatically by SubX. It calls all functions that start with 'test-'. +$array-equal-main:end: + # syscall(exit, Num-test-failures) + 8b/copy 0/mod/indirect 5/rm32/.disp32 . . 3/r32/EBX Num-test-failures/disp32 # copy *Num-test-failures to EBX + b8/copy-to-EAX 1/imm32/exit + cd/syscall 0x80/imm8 + +array-equal?: # a : (address array int), b : (address array int) -> EAX : boolean + # pseudocode: + # lena = a->length + # if (lena != b->length) return false + # i = 0 + # curra = a->data + # currb = b->data + # while i < lena + # i1 = *curra + # i2 = *currb + # if (c1 != c2) return false + # i+=4, curra+=4, currb+=4 + # return true + # + # registers: + # i: ECX + # lena: EDX + # curra: ESI + # currb: EDI + # i1: EAX + # i2: EBX + # + # . prolog + 55/push-EBP + 89/copy 3/mod/direct 5/rm32/EBP . . . 4/r32/ESP . . # copy ESP to EBP + # . save registers + 51/push-ECX + 52/push-EDX + 53/push-EBX + 56/push-ESI + 57/push-EDI + # ESI = a + 8b/copy 1/mod/*+disp8 5/rm32/EBP . . . 6/r32/ESI 8/disp8 . # copy *(EBP+8) to ESI + # EDI = b + 8b/copy 1/mod/*+disp8 5/rm32/EBP . . . 7/r32/EDI 0xc/disp8 . # copy *(EBP+12) to EDI + # lena/EDX = a->length + 8b/copy 0/mod/indirect 6/rm32/ESI . . . 2/r32/EDX . . # copy *ESI to EDX +$array-equal?:lengths: + # if (lena != b->length) return false + 39/compare 0/mod/indirect 7/rm32/EDI . . . 2/r32/EDX . . # compare *EDI and EDX + 75/jump-if-not-equal $array-equal?:false/disp8 + # curra/ESI = a->data + 81 0/subop/add 3/mod/direct 6/rm32/ESI . . . . . 4/imm32 # add to ESI + # currb/EDI = b->data + 81 0/subop/add 3/mod/direct 7/rm32/EDI . . . . . 4/imm32 # add to EDI + # i/ECX = i1/EAX = i2/EBX = 0 + 31/xor 3/mod/direct 1/rm32/ECX . . . 1/r32/ECX . . # clear ECX +$array-equal?:loop: + # if (i >= lena) return true + 39/compare 3/mod/direct 1/rm32/ECX . . . 2/r32/EDX . . # compare ECX with EDX + 7d/jump-if-greater-or-equal $array-equal?:true/disp8 + # i1 = *curra + 8b/copy 0/mod/indirect 6/rm32/ESI . . . 0/r32/EAX . . # copy *ESI to EAX + # i2 = *currb + 8b/copy 0/mod/indirect 7/rm32/EDI . . . 3/r32/EBX . . # copy *EDI to EBX + # if (i1 != i2) return false + 39/compare 3/mod/direct 0/rm32/EAX . . . 3/r32/EBX . . # compare EAX and EBX + 75/jump-if-not-equal $array-equal?:false/disp8 + # i += 4 + 81 0/subop/add 3/mod/direct 1/rm32/ECX . . . . . 4/imm32 # add to ECX + # currs += 4 + 81 0/subop/add 3/mod/direct 6/rm32/ESI . . . . . 4/imm32 # add to ESI + # currb += 4 + 81 0/subop/add 3/mod/direct 7/rm32/EDI . . . . . 4/imm32 # add to EDI + eb/jump $array-equal?:loop/disp8 +$array-equal?:true: + b8/copy-to-EAX 1/imm32 + eb/jump $array-equal?:end/disp8 +$array-equal?:false: + b8/copy-to-EAX 0/imm32 +$array-equal?:end: + # . restore registers + 5f/pop-to-EDI + 5e/pop-to-ESI + 5b/pop-to-EBX + 5a/pop-to-EDX + 59/pop-to-ECX + # . epilog + 89/copy 3/mod/direct 4/rm32/ESP . . . 5/r32/EBP . . # copy EBP to ESP + 5d/pop-to-EBP + c3/return + +test-compare-empty-with-empty-array: + # . prolog + 55/push-EBP + 89/copy 3/mod/direct 5/rm32/EBP . . . 4/r32/ESP . . # copy ESP to EBP + # var ECX = [] + 68/push 0/imm32/size + 89/copy 3/mod/direct 1/rm32/ECX . . . 4/r32/ESP . . # copy ESP to ECX + # var EDX = [] + 68/push 0/imm32/size + 89/copy 3/mod/direct 2/rm32/EDX . . . 4/r32/ESP . . # copy ESP to EDX + # EAX = array-equal?(ECX, EDX) + # . . push args + 52/push-EDX + 51/push-ECX + # . . call + e8/call array-equal?/disp32 + # . . discard args + 81 0/subop/add 3/mod/direct 4/rm32/ESP . . . . . 8/imm32 # add to ESP + # check-ints-equal(EAX, 1, msg) + # . . push args + 68/push "F - test-compare-empty-with-empty-array"/imm32 + 68/push 1/imm32/true + 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 + # . epilog + 89/copy 3/mod/direct 4/rm32/ESP . . . 5/r32/EBP . . # copy EBP to ESP + 5d/pop-to-EBP + c3/return + +test-compare-empty-with-non-empty-array: # also checks length-mismatch code path + # . prolog + 55/push-EBP + 89/copy 3/mod/direct 5/rm32/EBP . . . 4/r32/ESP . . # copy ESP to EBP + # var ECX = [1] + 68/push 1/imm32 + 68/push 4/imm32/size + 89/copy 3/mod/direct 1/rm32/ECX . . . 4/r32/ESP . . # copy ESP to ECX + # var EDX = [] + 68/push 0/imm32/size + 89/copy 3/mod/direct 2/rm32/EDX . . . 4/r32/ESP . . # copy ESP to EDX + # EAX = array-equal?(ECX, EDX) + # . . push args + 52/push-EDX + 51/push-ECX + # . . call + e8/call array-equal?/disp32 + # . . discard args + 81 0/subop/add 3/mod/direct 4/rm32/ESP . . . . . 8/imm32 # add to ESP + # check-ints-equal(EAX, 0, msg) + # . . push args + 68/push "F - test-compare-empty-with-non-empty-array"/imm32 + 68/push 0/imm32/false + 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 + # . epilog + 89/copy 3/mod/direct 4/rm32/ESP . . . 5/r32/EBP . . # copy EBP to ESP + 5d/pop-to-EBP + c3/return + +test-compare-equal-arrays: + # . prolog + 55/push-EBP + 89/copy 3/mod/direct 5/rm32/EBP . . . 4/r32/ESP . . # copy ESP to EBP + # var ECX = [1, 2, 3] + 68/push 3/imm32 + 68/push 2/imm32 + 68/push 1/imm32 + 68/push 0xc/imm32/size + 89/copy 3/mod/direct 1/rm32/ECX . . . 4/r32/ESP . . # copy ESP to ECX + # var EDX = [1, 2, 3] + 68/push 3/imm32 + 68/push 2/imm32 + 68/push 1/imm32 + 68/push 0xc/imm32/size + 89/copy 3/mod/direct 2/rm32/EDX . . . 4/r32/ESP . . # copy ESP to EDX + # EAX = array-equal?(ECX, EDX) + # . . push args + 52/push-EDX + 51/push-ECX + # . . call + e8/call array-equal?/disp32 + # . . discard args + 81 0/subop/add 3/mod/direct 4/rm32/ESP . . . . . 8/imm32 # add to ESP + # check-ints-equal(EAX, 1, msg) + # . . push args + 68/push "F - test-compare-equal-arrays"/imm32 + 68/push 1/imm32/true + 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 + # . epilog + 89/copy 3/mod/direct 4/rm32/ESP . . . 5/r32/EBP . . # copy EBP to ESP + 5d/pop-to-EBP + c3/return + +test-compare-inequal-arrays-equal-lengths: + # . prolog + 55/push-EBP + 89/copy 3/mod/direct 5/rm32/EBP . . . 4/r32/ESP . . # copy ESP to EBP + # var ECX = [1, 4, 3] + 68/push 3/imm32 + 68/push 4/imm32 + 68/push 1/imm32 + 68/push 0xc/imm32/size + 89/copy 3/mod/direct 1/rm32/ECX . . . 4/r32/ESP . . # copy ESP to ECX + # var EDX = [1, 2, 3] + 68/push 3/imm32 + 68/push 2/imm32 + 68/push 1/imm32 + 68/push 0xc/imm32/size + 89/copy 3/mod/direct 2/rm32/EDX . . . 4/r32/ESP . . # copy ESP to EDX + # EAX = array-equal?(ECX, EDX) + # . . push args + 52/push-EDX + 51/push-ECX + # . . call + e8/call array-equal?/disp32 + # . . discard args + 81 0/subop/add 3/mod/direct 4/rm32/ESP . . . . . 8/imm32 # add to ESP + # check-ints-equal(EAX, 0, msg) + # . . push args + 68/push "F - test-compare-inequal-arrays-equal-lengths"/imm32 + 68/push 0/imm32/false + 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 + # . epilog + 89/copy 3/mod/direct 4/rm32/ESP . . . 5/r32/EBP . . # copy EBP to ESP + 5d/pop-to-EBP + c3/return + +parse-array-of-ints: # ad : (address allocation-descriptor), s : (address string) -> result/EAX : (address array int) + # pseudocode + # end = s->data + s->length + # curr = s->data + # size = 0 + # while true + # if (curr >= end) break + # curr = skip-chars-matching-in-slice(curr, end, ' ') + # if (curr >= end) break + # curr = skip-chars-not-matching-in-slice(curr, end, ' ') + # ++size + # result = allocate(ad, (size+1)*4) + # result->size = (size+1)*4 + # var slice = {s->data, 0} + # out = result->data + # while true + # if (slice->start >= end) break + # slice->start = skip-chars-matching-in-slice(slice->start, end, ' ') + # if (slice->start >= end) break + # slice->end = skip-chars-not-matching-in-slice(slice->start, end, ' ') + # *out = parse-hex-int(slice) + # out += 4 + # slice->start = slice->end + # return result + # + # . prolog + 55/push-EBP + 89/copy 3/mod/direct 5/rm32/EBP . . . 4/r32/ESP . . # copy ESP to EBP + # . save registers + 51/push-ECX + 52/push-EDX + 53/push-EBX + 56/push-ESI + 57/push-EDI + # ESI = s + 8b/copy 1/mod/*+disp8 5/rm32/EBP . . . 6/r32/ESI 0xc/disp8 . # copy *(EBP+12) to ESI + # curr/ECX = s->data + 8d/copy-address 1/mod/*+disp8 6/rm32/ESI . . . 1/r32/ECX 4/disp8 . # copy ESI+4 to ECX + # end/EDX = s->data + s->length + # . EDX = s->length + 8b/copy 0/mod/indirect 6/rm32/ESI . . . 2/r32/EDX . . # copy *ESI to EDX + # . EDX += curr + 01/add 3/mod/direct 2/rm32/EDX . . . 1/r32/ECX . . # add ECX to EDX + # size/EBX = 0 + 31/xor 3/mod/direct 3/rm32/EBX . . . 3/r32/EBX . . # clear EBX +$parse-array-of-ints:loop1: + # if (curr >= end) break + 39/compare 3/mod/direct 1/rm32/ECX . . . 2/r32/EDX . . # compare ECX with EDX + 73/jump-if-greater-or-equal-unsigned $parse-array-of-ints:break1/disp8 + # curr = skip-chars-matching-in-slice(curr, end, ' ') + # . EAX = skip-chars-matching-in-slice(curr, end, ' ') + # . . push args + 68/push 0x20/imm32/space + 52/push-EDX + 51/push-ECX + # . . call + e8/call skip-chars-matching-in-slice/disp32 + # . . discard args + 81 0/subop/add 3/mod/direct 4/rm32/ESP . . . . . 0xc/imm32 # add to ESP + # . ECX = EAX + 89/copy 3/mod/direct 1/rm32/ECX . . . 0/r32/EAX . . # copy EAX to ECX + # if (curr >= end) break + 39/compare 3/mod/direct 1/rm32/ECX . . . 2/r32/EDX . . # compare ECX with EDX + 73/jump-if-greater-or-equal-unsigned $parse-array-of-ints:break1/disp8 + # curr = skip-chars-not-matching-in-slice(curr, end, ' ') + # . EAX = skip-chars-not-matching-in-slice(curr, end, ' ') + # . . push args + 68/push 0x20/imm32/space + 52/push-EDX + 51/push-ECX + # . . call + e8/call skip-chars-not-matching-in-slice/disp32 + # . . discard args + 81 0/subop/add 3/mod/direct 4/rm32/ESP . . . . . 0xc/imm32 # add to ESP + # . ECX = EAX + 89/copy 3/mod/direct 1/rm32/ECX . . . 0/r32/EAX . . # copy EAX to ECX + # size += 4 + 81 0/subop/add 3/mod/direct 3/rm32/EBX . . . . . 4/imm32 # add to EBX + eb/jump $parse-array-of-ints:loop1/disp8 +$parse-array-of-ints:break1: + # result/EDI = allocate(ad, size+4) + # . EAX = allocate(ad, size+4) + # . . push args + 89/copy 3/mod/direct 0/rm32/EAX . . . 3/r32/EBX . . # copy EBX to EAX + 05/add-to-EAX 4/imm32 + 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 + # . EDI = EAX + 89/copy 3/mod/direct 7/rm32/EDI . . . 0/r32/EAX . . # copy EAX to EDI + # result->size = size + 89/copy 0/mod/indirect 0/rm32/EAX . . . 3/r32/EBX . . # copy EBX to *EAX +$parse-array-of-ints:pass2: + # var slice/ECX = {s->data, 0} + # . push 0 + 68/push 0/imm32/end + # . push s->data + 8d/copy-address 1/mod/*+disp8 6/rm32/ESI . . . 1/r32/ECX 4/disp8 . # copy ESI+4 to ECX + 51/push-ECX + # . bookmark + 89/copy 3/mod/direct 1/rm32/ECX . . . 4/r32/ESP . . # copy ESP to ECX + # out/EBX = result->data + 8d/copy-address 1/mod/*+disp8 0/rm32/EAX . . . 3/r32/EBX 4/disp8 . # copy EAX+4 to EBX +$parse-array-of-ints:loop2: + # if (slice->start >= end) break + 39/compare 0/mod/indirect 1/rm32/ECX . . . 2/r32/EDX . . # compare *ECX with EDX + 73/jump-if-greater-or-equal-unsigned $parse-array-of-ints:end/disp8 + # slice->start = skip-chars-matching-in-slice(slice->start, end, ' ') + # . EAX = skip-chars-matching-in-slice(slice->start, end, ' ') + # . . push args + 68/push 0x20/imm32/space + 52/push-EDX + ff 6/subop/push 0/mod/indirect 1/rm32/ECX . . . . . . # push *ECX + # . . call + e8/call skip-chars-matching-in-slice/disp32 + # . . discard args + 81 0/subop/add 3/mod/direct 4/rm32/ESP . . . . . 0xc/imm32 # add to ESP + # . slice->start = EAX + 89/copy 0/mod/indirect 1/rm32/ECX . . . 0/r32/EAX . . # copy EAX to *ECX + # if (slice->start >= end) break + 39/compare 0/mod/indirect 1/rm32/ECX . . . 2/r32/EDX . . # compare *ECX with EDX + 73/jump-if-greater-or-equal-unsigned $parse-array-of-ints:end/disp8 + # slice->end = skip-chars-not-matching-in-slice(slice->start, end, ' ') + # . EAX = skip-chars-not-matching-in-slice(curr, end, ' ') + # . . push args + 68/push 0x20/imm32/space + 52/push-EDX + 50/push-EAX + # . . call + e8/call skip-chars-not-matching-in-slice/disp32 + # . . discard args + 81 0/subop/add 3/mod/direct 4/rm32/ESP . . . . . 0xc/imm32 # add to ESP + # . slice->end = EAX + 89/copy 1/mod/direct 1/rm32/ECX . . . 0/r32/EAX 4/disp8 . # copy EAX to *(ECX+4) + # *out = parse-hex-int(slice) + # . EAX = parse-hex-int(slice) + # . . push args + 51/push-ECX + # . . call + e8/call parse-hex-int/disp32 + # . . discard args + 81 0/subop/add 3/mod/direct 4/rm32/ESP . . . . . 4/imm32 # add to ESP + # *out = EAX + 89/copy 0/mod/indirect 3/rm32/EBX . . . 0/r32/EAX . . # copy EAX to *EBX + # out += 4 + 81 0/subop/add 3/mod/direct 3/rm32/EBX . . . . . 4/imm32 # add to EBX + # slice->start = slice->end + 8b/copy 1/mod/direct 1/rm32/ECX . . . 0/r32/EAX 4/disp8 . # copy *(ECX+4) to EAX + 89/copy 0/mod/indirect 1/rm32/ECX . . . 0/r32/EAX . . # copy EAX to *ECX + 81 0/subop/add 3/mod/direct 1/rm32/ECX . . . . . 4/imm32 # add to ECX + eb/jump $parse-array-of-ints:loop2/disp8 +$parse-array-of-ints:end: + # return EDI + 89/copy 3/mod/direct 0/rm32/EAX . . . 7/r32/EDI . . # copy EDI to EAX + # . reclaim locals + 81 0/subop/add 3/mod/direct 4/rm32/ESP . . . . . 8/imm32 # add to ESP + # . restore registers + 5f/pop-to-EDI + 5e/pop-to-ESI + 5b/pop-to-EBX + 5a/pop-to-EDX + 59/pop-to-ECX + # . epilog + 89/copy 3/mod/direct 4/rm32/ESP . . . 5/r32/EBP . . # copy EBP to ESP + 5d/pop-to-EBP + c3/return + +test-parse-array-of-ints: + # . prolog + 55/push-EBP + 89/copy 3/mod/direct 5/rm32/EBP . . . 4/r32/ESP . . # copy ESP to EBP + # var ECX = [1, 2, 3] + 68/push 3/imm32 + 68/push 2/imm32 + 68/push 1/imm32 + 68/push 0xc/imm32/size + 89/copy 3/mod/direct 1/rm32/ECX . . . 4/r32/ESP . . # copy ESP to ECX + # EAX = parse-array-of-ints(Heap, "1 2 3") + # . . push args + 68/push "1 2 3"/imm32 + 68/push Heap/imm32 + # . . call + e8/call parse-array-of-ints/disp32 + # . . discard args + 81 0/subop/add 3/mod/direct 4/rm32/ESP . . . . . 8/imm32 # add to ESP + # EAX = array-equal?(ECX, EAX) + # . . push args + 50/push-EAX + 51/push-ECX + # . . call + e8/call array-equal?/disp32 + # . . discard args + 81 0/subop/add 3/mod/direct 4/rm32/ESP . . . . . 8/imm32 # add to ESP + # check-ints-equal(EAX, 1, msg) + # . . push args + 68/push "F - test-parse-array-of-ints"/imm32 + 68/push 1/imm32/true + 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 + # . epilog + 89/copy 3/mod/direct 4/rm32/ESP . . . 5/r32/EBP . . # copy EBP to ESP + 5d/pop-to-EBP + c3/return + +test-parse-array-of-ints-empty: + # - empty string = empty array + # . prolog + 55/push-EBP + 89/copy 3/mod/direct 5/rm32/EBP . . . 4/r32/ESP . . # copy ESP to EBP + # EAX = parse-array-of-ints(Heap, "") + # . . push args + 68/push ""/imm32 + 68/push Heap/imm32 + # . . call + e8/call parse-array-of-ints/disp32 + # . . discard args + 81 0/subop/add 3/mod/direct 4/rm32/ESP . . . . . 8/imm32 # add to ESP + # check-ints-equal(*EAX, 0, msg) + # . . push args + 68/push "F - test-parse-array-of-ints-empty"/imm32 + 68/push 0/imm32/size + 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 + # . epilog + 89/copy 3/mod/direct 4/rm32/ESP . . . 5/r32/EBP . . # copy EBP to ESP + 5d/pop-to-EBP + c3/return + +test-parse-array-of-ints-just-whitespace: + # - just whitespace = empty array + # . prolog + 55/push-EBP + 89/copy 3/mod/direct 5/rm32/EBP . . . 4/r32/ESP . . # copy ESP to EBP + # EAX = parse-array-of-ints(Heap, " ") + # . . push args + 68/push " "/imm32 + 68/push Heap/imm32 + # . . call + e8/call parse-array-of-ints/disp32 + # . . discard args + 81 0/subop/add 3/mod/direct 4/rm32/ESP . . . . . 8/imm32 # add to ESP + # check-ints-equal(*EAX, 0, msg) + # . . push args + 68/push "F - test-parse-array-of-ints-empty"/imm32 + 68/push 0/imm32/size + 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 + # . epilog + 89/copy 3/mod/direct 4/rm32/ESP . . . 5/r32/EBP . . # copy EBP to ESP + 5d/pop-to-EBP + c3/return + +test-parse-array-of-ints-extra-whitespace: + # . prolog + 55/push-EBP + 89/copy 3/mod/direct 5/rm32/EBP . . . 4/r32/ESP . . # copy ESP to EBP + # var ECX = [1, 2, 3] + 68/push 3/imm32 + 68/push 2/imm32 + 68/push 1/imm32 + 68/push 0xc/imm32/size + 89/copy 3/mod/direct 1/rm32/ECX . . . 4/r32/ESP . . # copy ESP to ECX + # EAX = parse-array-of-ints(Heap, " 1 2 3 ") + # . . push args + 68/push " 1 2 3 "/imm32 + 68/push Heap/imm32 + # . . call + e8/call parse-array-of-ints/disp32 + # . . discard args + 81 0/subop/add 3/mod/direct 4/rm32/ESP . . . . . 8/imm32 # add to ESP + # EAX = array-equal?(ECX, EAX) + # . . push args + 50/push-EAX + 51/push-ECX + # . . call + e8/call array-equal?/disp32 + # . . discard args + 81 0/subop/add 3/mod/direct 4/rm32/ESP . . . . . 8/imm32 # add to ESP + # check-ints-equal(EAX, 1, msg) + # . . push args + 68/push "F - test-parse-array-of-ints-extra-whitespace"/imm32 + 68/push 1/imm32/true + 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 + # . epilog + 89/copy 3/mod/direct 4/rm32/ESP . . . 5/r32/EBP . . # copy EBP to ESP + 5d/pop-to-EBP + c3/return + +# helper for later tests +# compare an array with a string representation of an array literal +check-array-equal: # a : (address array int), expected : (address string), msg : (address string) + # . prolog + 55/push-EBP + 89/copy 3/mod/direct 5/rm32/EBP . . . 4/r32/ESP . . # copy ESP to EBP + # . save registers + 50/push-EAX + # var b/ECX = parse-array-of-ints(Heap, expected) + # . EAX = parse-array-of-ints(Heap, expected) + # . . push args + ff 6/subop/push 1/mod/*+disp8 5/rm32/EBP . . . . 0xc/disp8 . # push *(EBP+12) + 68/push Heap/imm32 + # . . call + e8/call parse-array-of-ints/disp32 + # . . discard args + 81 0/subop/add 3/mod/direct 4/rm32/ESP . . . . . 8/imm32 # add to ESP + # . b = EAX + 89/copy 3/mod/direct 1/rm32/ECX . . . 0/r32/EAX . . # copy EAX to ECX + # EAX = array-equal?(a, b) + # . . push args + 51/push-ECX + ff 6/subop/push 1/mod/*+disp8 5/rm32/EBP . . . . 8/disp8 . # push *(EBP+8) + # . . call + e8/call array-equal?/disp32 + # . . discard args + 81 0/subop/add 3/mod/direct 4/rm32/ESP . . . . . 8/imm32 # add to ESP + # check-ints-equal(EAX, 1, msg) + # . . push args + ff 6/subop/push 1/mod/*+disp8 5/rm32/EBP . . . . 0x10/disp8 . # push *(EBP+16) + 68/push 1/imm32 + 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-array-equal:end: + # . restore registers + 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 + +test-check-array-equal: + # . prolog + 55/push-EBP + 89/copy 3/mod/direct 5/rm32/EBP . . . 4/r32/ESP . . # copy ESP to EBP + # var ECX = [1, 2, 3] + 68/push 3/imm32 + 68/push 2/imm32 + 68/push 1/imm32 + 68/push 0xc/imm32/size + 89/copy 3/mod/direct 1/rm32/ECX . . . 4/r32/ESP . . # copy ESP to ECX + # check-array-equal(ECX, "1 2 3", "msg") + # . . push args + 68/push "F - test-check-array-equal"/imm32 + 68/push "1 2 3"/imm32 + 51/push-ECX + # . . call + e8/call check-array-equal/disp32 + # . . discard args + 81 0/subop/add 3/mod/direct 4/rm32/ESP . . . . . 8/imm32 # add to ESP + # . epilog + 89/copy 3/mod/direct 4/rm32/ESP . . . 5/r32/EBP . . # copy EBP to ESP + 5d/pop-to-EBP + c3/return + +== data + +Heap: + # curr + 0/imm32 + # limit + 0/imm32 + +# . . vim:nowrap:textwidth=0 |