diff options
author | Kartik Agaram <vc@akkartik.com> | 2019-08-26 11:55:26 -0700 |
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committer | Kartik Agaram <vc@akkartik.com> | 2019-08-26 11:59:21 -0700 |
commit | 333525360b22f3d3ea31db46a4d2f1b4edbfebdb (patch) | |
tree | ed255f308542ba28a99d862d54d4992dcf749622 /054string-equal.subx | |
parent | 22fb844ba4edf14eb85245a35f42e721658c4f8e (diff) | |
download | mu-333525360b22f3d3ea31db46a4d2f1b4edbfebdb.tar.gz |
5592 - switch register names to lowercase
Diffstat (limited to '054string-equal.subx')
-rw-r--r-- | 054string-equal.subx | 166 |
1 files changed, 83 insertions, 83 deletions
diff --git a/054string-equal.subx b/054string-equal.subx index 9784e2ad..073e7dbb 100644 --- a/054string-equal.subx +++ b/054string-equal.subx @@ -9,11 +9,11 @@ Entry: # run all tests #? e8/call test-compare-equal-strings/disp32 e8/call run-tests/disp32 # 'run-tests' is a function created automatically by SubX. It calls all functions that start with 'test-'. # 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 + 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 -string-equal?: # s : (address string), benchmark : (address string) -> EAX : boolean +string-equal?: # s : (address string), benchmark : (address string) -> eax : boolean # pseudocode: # if (s->length != benchmark->length) return false # currs = s->data @@ -27,183 +27,183 @@ string-equal?: # s : (address string), benchmark : (address string) -> EAX : bo # return true # # registers: - # currs: ESI - # maxs: ECX - # currb: EDI - # c1: EAX - # c2: EBX + # currs: esi + # maxs: ecx + # currb: edi + # c1: eax + # c2: ebx # # . 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 - 51/push-ECX - 52/push-EDX - 56/push-ESI - 57/push-EDI - # ESI = s - 8b/copy 1/mod/*+disp8 5/rm32/EBP . . . 6/r32/ESI 8/disp8 . # copy *(EBP+8) to ESI - # EDI = benchmark - 8b/copy 1/mod/*+disp8 5/rm32/EBP . . . 7/r32/EDI 0xc/disp8 . # copy *(EBP+12) to EDI - # ECX = s->length - 8b/copy 0/mod/indirect 6/rm32/ESI . . . 1/r32/ECX . . # copy *ESI to ECX + 51/push-ecx + 52/push-edx + 56/push-esi + 57/push-edi + # esi = s + 8b/copy 1/mod/*+disp8 5/rm32/ebp . . . 6/r32/esi 8/disp8 . # copy *(ebp+8) to esi + # edi = benchmark + 8b/copy 1/mod/*+disp8 5/rm32/ebp . . . 7/r32/edi 0xc/disp8 . # copy *(ebp+12) to edi + # ecx = s->length + 8b/copy 0/mod/indirect 6/rm32/esi . . . 1/r32/ecx . . # copy *esi to ecx $string-equal?:lengths: - # if (ECX != benchmark->length) return false - 39/compare 0/mod/indirect 7/rm32/EDI . . . 1/r32/ECX . . # compare *EDI and ECX + # if (ecx != benchmark->length) return false + 39/compare 0/mod/indirect 7/rm32/edi . . . 1/r32/ecx . . # compare *edi and ecx 75/jump-if-not-equal $string-equal?:false/disp8 - # currs/ESI = s->data - 81 0/subop/add 3/mod/direct 6/rm32/ESI . . . . . 4/imm32 # add to ESI - # maxs/ECX = s->data + s->length - 01/add 3/mod/direct 1/rm32/ECX . . . 6/r32/ESI . . # add ESI to ECX - # currb/EDI = benchmark->data - 81 0/subop/add 3/mod/direct 7/rm32/EDI . . . . . 4/imm32 # add to EDI - # c1/EAX = c2/EDX = 0 - 31/xor 3/mod/direct 0/rm32/EAX . . . 0/r32/EAX . . # clear EAX - 31/xor 3/mod/direct 2/rm32/EDX . . . 2/r32/EDX . . # clear EDX + # currs/esi = s->data + 81 0/subop/add 3/mod/direct 6/rm32/esi . . . . . 4/imm32 # add to esi + # maxs/ecx = s->data + s->length + 01/add 3/mod/direct 1/rm32/ecx . . . 6/r32/esi . . # add esi to ecx + # currb/edi = benchmark->data + 81 0/subop/add 3/mod/direct 7/rm32/edi . . . . . 4/imm32 # add to edi + # c1/eax = c2/edx = 0 + 31/xor 3/mod/direct 0/rm32/eax . . . 0/r32/eax . . # clear eax + 31/xor 3/mod/direct 2/rm32/edx . . . 2/r32/edx . . # clear edx $string-equal?:loop: # if (currs >= maxs) return true - 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 $string-equal?:true/disp8 # c1 = *currs - 8a/copy-byte 0/mod/indirect 6/rm32/ESI . . . 0/r32/AL . . # copy byte at *ESI to AL + 8a/copy-byte 0/mod/indirect 6/rm32/esi . . . 0/r32/AL . . # copy byte at *esi to AL # c2 = *currb - 8a/copy-byte 0/mod/indirect 7/rm32/EDI . . . 2/r32/DL . . # copy byte at *EDI to DL + 8a/copy-byte 0/mod/indirect 7/rm32/edi . . . 2/r32/DL . . # copy byte at *edi to DL # if (c1 != c2) return false - 39/compare 3/mod/direct 0/rm32/EAX . . . 2/r32/EDX . . # compare EAX and EDX + 39/compare 3/mod/direct 0/rm32/eax . . . 2/r32/edx . . # compare eax and edx 75/jump-if-not-equal $string-equal?:false/disp8 # ++currs - 46/increment-ESI + 46/increment-esi # ++currb - 47/increment-EDI + 47/increment-edi eb/jump $string-equal?:loop/disp8 $string-equal?:true: - b8/copy-to-EAX 1/imm32 + b8/copy-to-eax 1/imm32 eb/jump $string-equal?:end/disp8 $string-equal?:false: - b8/copy-to-EAX 0/imm32 + b8/copy-to-eax 0/imm32 $string-equal?:end: # . restore registers - 5f/pop-to-EDI - 5e/pop-to-ESI - 5a/pop-to-EDX - 59/pop-to-ECX + 5f/pop-to-edi + 5e/pop-to-esi + 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 + 89/copy 3/mod/direct 4/rm32/esp . . . 5/r32/ebp . . # copy ebp to esp + 5d/pop-to-ebp c3/return # - tests test-compare-empty-with-empty-string: - # EAX = string-equal?("", "") + # eax = string-equal?("", "") # . . push args 68/push ""/imm32 68/push ""/imm32 # . . call e8/call string-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) + 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-string"/imm32 68/push 1/imm32/true - 50/push-EAX + 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 + 81 0/subop/add 3/mod/direct 4/rm32/esp . . . . . 0xc/imm32 # add to esp c3/return test-compare-empty-with-non-empty-string: # also checks length-mismatch code path - # EAX = string-equal?("", "Abc") + # eax = string-equal?("", "Abc") # . . push args 68/push "Abc"/imm32 68/push ""/imm32 # . . call e8/call string-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) + 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-string"/imm32 68/push 0/imm32/false - 50/push-EAX + 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 + 81 0/subop/add 3/mod/direct 4/rm32/esp . . . . . 0xc/imm32 # add to esp c3/return test-compare-equal-strings: - # EAX = string-equal?("Abc", "Abc") + # eax = string-equal?("Abc", "Abc") # . . push args 68/push "Abc"/imm32 68/push "Abc"/imm32 # . . call e8/call string-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) + 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-strings"/imm32 68/push 1/imm32/true - 50/push-EAX + 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 + 81 0/subop/add 3/mod/direct 4/rm32/esp . . . . . 0xc/imm32 # add to esp c3/return test-compare-inequal-strings-equal-lengths: - # EAX = string-equal?("Abc", "Adc") + # eax = string-equal?("Abc", "Adc") # . . push args 68/push "Adc"/imm32 68/push "Abc"/imm32 # . . call e8/call string-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) + 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-strings-equal-lengths"/imm32 68/push 0/imm32/false - 50/push-EAX + 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 + 81 0/subop/add 3/mod/direct 4/rm32/esp . . . . . 0xc/imm32 # add to esp c3/return # helper for later tests check-string-equal: # s : (address string), 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 + 55/push-ebp + 89/copy 3/mod/direct 5/rm32/ebp . . . 4/r32/esp . . # copy esp to ebp # . save registers - 50/push-EAX - # EAX = string-equal?(s, expected) + 50/push-eax + # eax = string-equal?(s, expected) # . . push args - ff 6/subop/push 1/mod/*+disp8 5/rm32/EBP . . . . 0xc/disp8 . # push *(EBP+12) - ff 6/subop/push 1/mod/*+disp8 5/rm32/EBP . . . . 8/disp8 . # push *(EBP+8) + ff 6/subop/push 1/mod/*+disp8 5/rm32/ebp . . . . 0xc/disp8 . # push *(ebp+12) + ff 6/subop/push 1/mod/*+disp8 5/rm32/ebp . . . . 8/disp8 . # push *(ebp+8) # . . call e8/call string-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) + 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) + ff 6/subop/push 1/mod/*+disp8 5/rm32/ebp . . . . 0x10/disp8 . # push *(ebp+16) 68/push 1/imm32 - 50/push-EAX + 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 + 81 0/subop/add 3/mod/direct 4/rm32/esp . . . . . 0xc/imm32 # add to esp $check-string-equal:end: # . restore registers - 58/pop-to-EAX + 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 the helper @@ -215,16 +215,16 @@ test-check-string-equal: # . . call e8/call check-string-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) + 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-check-string-equal"/imm32 68/push 0/imm32/false - 50/push-EAX + 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 + 81 0/subop/add 3/mod/direct 4/rm32/esp . . . . . 0xc/imm32 # add to esp c3/return # . . vim:nowrap:textwidth=0 |