diff options
Diffstat (limited to 'subx/054string-equal.subx')
| -rw-r--r-- | subx/054string-equal.subx | 38 |
1 files changed, 19 insertions, 19 deletions
diff --git a/subx/054string-equal.subx b/subx/054string-equal.subx index 1854403c..fdfca84e 100644 --- a/subx/054string-equal.subx +++ b/subx/054string-equal.subx @@ -13,7 +13,7 @@ b8/copy-to-EAX 1/imm32/exit cd/syscall 0x80/imm8 -string-equal: # s : string, benchmark : string -> EAX : boolean +string-equal?: # s : string, benchmark : string -> EAX : boolean # pseudocode: # if s->length != b->length return false # for i = 0; i < s->length; ++i @@ -43,38 +43,38 @@ string-equal: # s : string, benchmark : string -> EAX : boolean 8b/copy 0/mod/indirect 0/rm32/EAX . . . 2/r32/EDX . . # copy *EAX to EDX # compare s->length and b->length 39/compare 0/mod/indirect 3/rm32/EBX . . . 2/r32/EDX . . # compare *EBX with EDX - 75/jump-if-not-equal $string-equal:false/disp8 -$string-equal:lengths: + 75/jump-if-not-equal $string-equal?:false/disp8 +$string-equal?:lengths: # var i/ECX : int = 0 b9/copy-to-ECX 0/imm32 # EBX = &b[i] 43/inc-EBX # EAX = &s[i] 40/inc-EAX -$string-equal:loop: +$string-equal?:loop: # if i >= s->length return true 39/compare 3/mod/direct 1/rm32/ECX . . . 2/r32/EDX . . # compare ECX with EDX - 7d/jump-if-greater-or-equal $string-equal:true/disp8 + 7d/jump-if-greater-or-equal $string-equal?:true/disp8 # if b[i] != s[i] return false # ESI = s[i] 8b/copy 0/mod/indirect 0/rm32/EAX . . . 6/r32/ESI . . # copy *EAX to ESI # compare b[i] with ESI 39/compare 0/mod/indirect 3/rm32/EBX . . . 6/r32/ESI . . # compare *EBX with ESI - 75/jump-if-not-equal $string-equal:false/disp8 + 75/jump-if-not-equal $string-equal?:false/disp8 # ++i 41/inc-ECX 40/inc-EAX 43/inc-EBX # loop - eb/jump $string-equal:loop/disp8 -$string-equal:true: + eb/jump $string-equal?:loop/disp8 +$string-equal?:true: # return true b8/copy-to-EAX 1/imm32 - eb/jump $string-equal:end/disp8 -$string-equal:false: + eb/jump $string-equal?:end/disp8 +$string-equal?:false: # return false b8/copy-to-EAX 0/imm32 -$string-equal:end: +$string-equal?:end: # . restore registers 5e/pop-to-ESI 5b/pop-to-EBX @@ -88,12 +88,12 @@ $string-equal:end: # - 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 + 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) @@ -108,12 +108,12 @@ test-compare-empty-with-empty-string: 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 + 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) @@ -128,12 +128,12 @@ test-compare-empty-with-non-empty-string: # also checks length-mismatch code pa 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 + 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) @@ -148,12 +148,12 @@ test-compare-equal-strings: 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 + 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) |