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| author | Kartik Agaram <vc@akkartik.com> | 2018-11-30 11:10:44 -0800 |
|---|---|---|
| committer | Kartik Agaram <vc@akkartik.com> | 2018-11-30 11:13:36 -0800 |
| commit | ee9a9237d6324f1de1bb7150083eacf7b9af5f70 (patch) | |
| tree | 86180456f2a3cf5503783afc78856280f088a863 /subx/054string_equal.subx | |
| parent | 6030d7e2e56d445ca67c6a0e8c9cf33e46bc673c (diff) | |
| download | mu-ee9a9237d6324f1de1bb7150083eacf7b9af5f70.tar.gz | |
4802
Some automated commenting cleanup. Still needs more careful manual scanning. sed -i 's/^# 1-3/# . 1-3/' *.subx */*.subx sed -i 's/^# op/# . op/' *.subx */*.subx sed -i 's/# vim/# . . vim/' *.subx */*.subx sed -i 's/^ # push args/ # . . push args/' *.subx */*.subx sed -i 's/^ # discard args/ # . . discard args/' *.subx */*.subx sed -i 's/^ # call/ # . . call/' *.subx */*.subx sed -i 's/^ # prolog/ # . prolog/' *.subx */*.subx sed -i 's/^ # epilog/ # . epilog/' *.subx */*.subx sed -i 's/^ # save registers/ # . save registers/' *.subx */*.subx sed -i 's/^ # restore registers/ # . restore registers/' *.subx */*.subx sed -i 's/ operand / register /' *.subx */*.subx
Diffstat (limited to 'subx/054string_equal.subx')
| -rw-r--r-- | subx/054string_equal.subx | 72 |
1 files changed, 36 insertions, 36 deletions
diff --git a/subx/054string_equal.subx b/subx/054string_equal.subx index 2b0d6006..44222e1e 100644 --- a/subx/054string_equal.subx +++ b/subx/054string_equal.subx @@ -1,9 +1,9 @@ # Comparing 'regular' length-prefixed strings. == code -# instruction effective address operand 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 +# 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 # main: e8/call run-tests/disp32 # 'run-tests' is a function created automatically by SubX. It calls all functions that start with 'test-'. @@ -13,10 +13,10 @@ cd/syscall 0x80/imm8 string-equal: # s : string, benchmark : string -> EAX : boolean - # prolog + # . prolog 55/push-EBP 89/copy 3/mod/direct 5/rm32/EBP . . . 4/r32/ESP . . # copy ESP to EBP - # save registers + # . save registers 51/push-ECX 52/push-EDX 53/push-EBX @@ -74,12 +74,12 @@ $string-equal:false: # return false b8/copy-to-EAX 0/imm32 $string-equal:end: - # restore registers + # . restore registers 5e/pop-to-ESI 5b/pop-to-EBX 5a/pop-to-EDX 59/pop-to-ECX - # epilog + # . epilog 89/copy 3/mod/direct 4/rm32/ESP . . . 5/r32/EBP . . # copy EBP to ESP 5d/pop-to-EBP c3/return @@ -88,82 +88,82 @@ $string-equal:end: test-compare-empty-with-empty-string: # EAX = string-equal("", "") - # push args + # . . push args 68/push ""/imm32 68/push ""/imm32 - # call + # . . call e8/call string-equal/disp32 - # discard args + # . . discard args 81 0/subop/add 3/mod/direct 4/rm32/ESP . . . . . 8/imm32 # add to ESP - # call check-ints-equal(EAX, 1, msg) - # push args + # . . call 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 - # call + # . . call e8/call check-ints-equal/disp32 - # discard args + # . . discard args 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") - # push args + # . . push args 68/push "Abc"/imm32 68/push ""/imm32 - # call + # . . call e8/call string-equal/disp32 - # discard args + # . . discard args 81 0/subop/add 3/mod/direct 4/rm32/ESP . . . . . 8/imm32 # add to ESP - # call check-ints-equal(EAX, 0, msg) - # push args + # . . call 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 - # call + # . . call e8/call check-ints-equal/disp32 - # discard args + # . . discard args 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") - # push args + # . . push args 68/push "Abc"/imm32 68/push "Abc"/imm32 - # call + # . . call e8/call string-equal/disp32 - # discard args + # . . discard args 81 0/subop/add 3/mod/direct 4/rm32/ESP . . . . . 8/imm32 # add to ESP - # call check-ints-equal(EAX, 1, msg) - # push args + # . . call check-ints-equal(EAX, 1, msg) + # . . push args 68/push "F - test-compare-equal-strings"/imm32 68/push 1/imm32/true 50/push-EAX - # call + # . . call e8/call check-ints-equal/disp32 - # discard args + # . . discard args 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") - # push args + # . . push args 68/push "Adc"/imm32 68/push "Abc"/imm32 - # call + # . . call e8/call string-equal/disp32 - # discard args + # . . discard args 81 0/subop/add 3/mod/direct 4/rm32/ESP . . . . . 8/imm32 # add to ESP - # call check-ints-equal(EAX, 0, msg) - # push args + # . . call 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 - # call + # . . call e8/call check-ints-equal/disp32 - # discard args + # . . discard args 81 0/subop/add 3/mod/direct 4/rm32/ESP . . . . . 0xc/imm32 # add to ESP c3/return -# vim:nowrap:textwidth=0 +# . . vim:nowrap:textwidth=0 |