diff options
Diffstat (limited to 'subx/052kernel-string-equal.subx')
| -rw-r--r-- | subx/052kernel-string-equal.subx | 52 |
1 files changed, 26 insertions, 26 deletions
diff --git a/subx/052kernel-string-equal.subx b/subx/052kernel-string-equal.subx index 4568528a..b61c3303 100644 --- a/subx/052kernel-string-equal.subx +++ b/subx/052kernel-string-equal.subx @@ -28,7 +28,7 @@ # compare a null-terminated ascii string with a more idiomatic length-prefixed byte array # reason for the name: the only place we should have null-terminated ascii strings is from commandline args -kernel-string-equal: # s : null-terminated ascii string, benchmark : length-prefixed ascii string -> EAX : boolean +kernel-string-equal?: # s : null-terminated ascii string, benchmark : length-prefixed ascii string -> EAX : boolean # pseudocode: # initialize n = b->length # initialize s1 = s @@ -63,9 +63,9 @@ kernel-string-equal: # s : null-terminated ascii string, benchmark : length-pre # initialize loop counter i into ECX b9/copy-to-ECX 0/imm32/exit # while (i/ECX < n/EDX) -$kernel-string-equal:loop: +$kernel-string-equal?:loop: 39/compare 3/mod/direct 1/rm32/ECX . . . 2/r32/EDX . . # compare ECX with EDX - 74/jump-if-equal $kernel-string-equal:break/disp8 + 74/jump-if-equal $kernel-string-equal?:break/disp8 # c1/EAX, c2/EBX = *s, *benchmark b8/copy-to-EAX 0/imm32 8a/copy 0/mod/indirect 7/rm32/EDI . . . 0/r32/EAX . . # copy byte at *EDI to lower byte of EAX @@ -73,29 +73,29 @@ $kernel-string-equal:loop: 8a/copy 0/mod/indirect 6/rm32/ESI . . . 3/r32/EBX . . # copy byte at *ESI to lower byte of EBX # if (c1 == 0) return false 3d/compare-EAX 0/imm32 - 74/jump-if-equal $kernel-string-equal:false/disp8 + 74/jump-if-equal $kernel-string-equal?:false/disp8 # if (c1 != c2) return false 39/compare 3/mod/direct 0/rm32/EAX . . . 3/r32/EBX . . # compare EAX with EBX - 75/jump-if-not-equal $kernel-string-equal:false/disp8 + 75/jump-if-not-equal $kernel-string-equal?:false/disp8 # ++s1, ++s2, ++i 41/inc-ECX 46/inc-ESI 47/inc-EDI # end while - eb/jump $kernel-string-equal:loop/disp8 -$kernel-string-equal:break: + eb/jump $kernel-string-equal?:loop/disp8 +$kernel-string-equal?:break: # if (*s/EDI == 0) return true b8/copy-to-EAX 0/imm32 8a/copy 0/mod/indirect 7/rm32/EDI . . . 0/r32/EAX . . # copy byte at *EDI to lower byte of EAX 3d/compare-EAX 0/imm32 - 75/jump-if-not-equal $kernel-string-equal:false/disp8 -$kernel-string-equal:true: + 75/jump-if-not-equal $kernel-string-equal?:false/disp8 +$kernel-string-equal?:true: b8/copy-to-EAX 1/imm32 - eb/jump $kernel-string-equal:end/disp8 + eb/jump $kernel-string-equal?:end/disp8 # return false -$kernel-string-equal:false: +$kernel-string-equal?:false: b8/copy-to-EAX 0/imm32 -$kernel-string-equal:end: +$kernel-string-equal?:end: # . restore registers 5f/pop-to-EDI 5e/pop-to-ESI @@ -110,12 +110,12 @@ $kernel-string-equal:end: # - tests test-compare-null-kernel-string-with-empty-array: - # EAX = kernel-string-equal(Null-kernel-string, "") + # EAX = kernel-string-equal?(Null-kernel-string, "") # . . push args 68/push ""/imm32 68/push Null-kernel-string/imm32 # . . call - e8/call kernel-string-equal/disp32 + e8/call kernel-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) @@ -130,12 +130,12 @@ test-compare-null-kernel-string-with-empty-array: c3/return test-compare-null-kernel-string-with-non-empty-array: - # EAX = kernel-string-equal(Null-kernel-string, "Abc") + # EAX = kernel-string-equal?(Null-kernel-string, "Abc") # . . push args 68/push "Abc"/imm32 68/push Null-kernel-string/imm32 # . . call - e8/call kernel-string-equal/disp32 + e8/call kernel-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) @@ -150,12 +150,12 @@ test-compare-null-kernel-string-with-non-empty-array: c3/return test-compare-kernel-string-with-equal-array: - # EAX = kernel-string-equal(_test-Abc-kernel-string, "Abc") + # EAX = kernel-string-equal?(_test-Abc-kernel-string, "Abc") # . . push args 68/push "Abc"/imm32 68/push _test-Abc-kernel-string/imm32 # . . call - e8/call kernel-string-equal/disp32 + e8/call kernel-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) @@ -170,12 +170,12 @@ test-compare-kernel-string-with-equal-array: c3/return test-compare-kernel-string-with-inequal-array: - # EAX = kernel-string-equal(_test-Abc-kernel-string, "Adc") + # EAX = kernel-string-equal?(_test-Abc-kernel-string, "Adc") # . . push args 68/push "Adc"/imm32 68/push _test-Abc-kernel-string/imm32 # . . call - e8/call kernel-string-equal/disp32 + e8/call kernel-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) @@ -190,12 +190,12 @@ test-compare-kernel-string-with-inequal-array: c3/return test-compare-kernel-string-with-empty-array: - # EAX = kernel-string-equal(_test-Abc-kernel-string, "") + # EAX = kernel-string-equal?(_test-Abc-kernel-string, "") # . . push args 68/push ""/imm32 68/push _test-Abc-kernel-string/imm32 # . . call - e8/call kernel-string-equal/disp32 + e8/call kernel-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) @@ -210,12 +210,12 @@ test-compare-kernel-string-with-empty-array: c3/return test-compare-kernel-string-with-shorter-array: - # EAX = kernel-string-equal(_test-Abc-kernel-string, "Ab") + # EAX = kernel-string-equal?(_test-Abc-kernel-string, "Ab") # . . push args 68/push "Ab"/imm32 68/push _test-Abc-kernel-string/imm32 # . . call - e8/call kernel-string-equal/disp32 + e8/call kernel-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) @@ -230,12 +230,12 @@ test-compare-kernel-string-with-shorter-array: c3/return test-compare-kernel-string-with-longer-array: - # EAX = kernel-string-equal(_test-Abc-kernel-string, "Abcd") + # EAX = kernel-string-equal?(_test-Abc-kernel-string, "Abcd") # . . push args 68/push "Abcd"/imm32 68/push _test-Abc-kernel-string/imm32 # . . call - e8/call kernel-string-equal/disp32 + e8/call kernel-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) |