diff options
Diffstat (limited to 'subx/examples/ex11.subx')
-rw-r--r-- | subx/examples/ex11.subx | 142 |
1 files changed, 71 insertions, 71 deletions
diff --git a/subx/examples/ex11.subx b/subx/examples/ex11.subx index 247a0076..253b91ab 100644 --- a/subx/examples/ex11.subx +++ b/subx/examples/ex11.subx @@ -15,9 +15,9 @@ # would cause tests to not run, rather than to fail as we'd like.) == 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-'. @@ -29,10 +29,10 @@ # 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 - # 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 @@ -97,7 +97,7 @@ $kernel-string-equal:false: b8/copy-to-EAX 0/imm32 $kernel-string-equal:end: - # restore registers + # . restore registers 5f/pop-to-EDI 5e/pop-to-ESI 5b/pop-to-EBX @@ -112,141 +112,141 @@ $kernel-string-equal:end: test-compare-null-kernel-string-with-empty-array: # EAX = kernel-string-equal(Null-kernel-string, "") - # push args + # . . push args 68/push ""/imm32 68/push Null-kernel-string/imm32 - # call + # . . call e8/call kernel-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-null-kernel-string-with-empty-array"/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-null-kernel-string-with-non-empty-array: # EAX = kernel-string-equal(Null-kernel-string, "Abc") - # push args + # . . push args 68/push "Abc"/imm32 68/push Null-kernel-string/imm32 - # call + # . . call e8/call kernel-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-null-kernel-string-with-non-empty-array"/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-kernel-string-with-equal-array: # EAX = kernel-string-equal(Abc-kernel-string, "Abc") - # push args + # . . push args 68/push "Abc"/imm32 68/push Abc-kernel-string/imm32 - # call + # . . call e8/call kernel-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-kernel-string-with-equal-array"/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-kernel-string-with-inequal-array: # EAX = kernel-string-equal(Abc-kernel-string, "Adc") - # push args + # . . push args 68/push "Adc"/imm32 68/push Abc-kernel-string/imm32 - # call + # . . call e8/call kernel-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-kernel-string-with-equal-array"/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-kernel-string-with-empty-array: # EAX = kernel-string-equal(Abc-kernel-string, "") - # push args + # . . push args 68/push ""/imm32 68/push Abc-kernel-string/imm32 - # call + # . . call e8/call kernel-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) - # push args + # . . call check-ints-equal(EAX, 0) + # . . push args 68/push "F - test-compare-kernel-string-with-equal-array"/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-kernel-string-with-shorter-array: # EAX = kernel-string-equal(Abc-kernel-string, "Ab") - # push args + # . . push args 68/push "Ab"/imm32 68/push Abc-kernel-string/imm32 - # call + # . . call e8/call kernel-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) - # push args + # . . call check-ints-equal(EAX, 0) + # . . push args 68/push "F - test-compare-kernel-string-with-shorter-array"/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-kernel-string-with-longer-array: # EAX = kernel-string-equal(Abc-kernel-string, "Abcd") - # push args + # . . push args 68/push "Abcd"/imm32 68/push Abc-kernel-string/imm32 - # call + # . . call e8/call kernel-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) - # push args + # . . call check-ints-equal(EAX, 0) + # . . push args 68/push "F - test-compare-kernel-string-with-longer-array"/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 @@ -254,10 +254,10 @@ test-compare-kernel-string-with-longer-array: # print msg to stderr if a != b, otherwise print "." check-ints-equal: # (a : int, b : int, msg : (address array byte)) -> 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 53/push-EBX # load args into EAX, EBX and ECX @@ -267,11 +267,11 @@ check-ints-equal: # (a : int, b : int, msg : (address array byte)) -> boolean 39/compare 3/mod/direct 0/rm32/EAX . . . 3/r32/EBX . . # compare EAX and EBX 75/jump-if-unequal $check-ints-equal:else/disp8 # print('.') - # push args + # . . push args 68/push "."/imm32 - # call + # . . call e8/call write-stderr/disp32 - # discard args + # . . discard args 81 0/subop/add 3/mod/direct 4/rm32/ESP . . . . . 4/imm32 # add to ESP # return eb/jump $check-ints-equal:end/disp8 @@ -280,21 +280,21 @@ $check-ints-equal:else: # copy msg into ECX 8b/copy 1/mod/*+disp8 4/rm32/sib 5/base/EBP 4/index/none . 1/r32/ECX 0x10/disp8 . # copy *(EBP+16) to ECX # print(ECX) - # push args + # . . push args 51/push-ECX - # call + # . . call e8/call write-stderr/disp32 - # discard args + # . . discard args 81 0/subop/add 3/mod/direct 4/rm32/ESP . . . . . 4/imm32 # add to ESP # print newline - # push args + # . . push args 68/push Newline/imm32 - # call + # . . call e8/call write-stderr/disp32 - # discard args + # . . discard args 81 0/subop/add 3/mod/direct 4/rm32/ESP . . . . . 4/imm32 # add to ESP $check-ints-equal:end: - # restore registers + # . restore registers 5b/pop-to-EBX 59/pop-to-ECX # end @@ -303,10 +303,10 @@ $check-ints-equal:end: c3/return write-stderr: # s : (address array byte) -> <void> - # prolog + # . prolog 55/push-EBP 89/copy 3/mod/direct 5/rm32/EBP . . . 4/r32/ESP . . # copy ESP to EBP - # save registers + # . save registers 50/push-EAX 51/push-ECX 52/push-EDX @@ -323,7 +323,7 @@ write-stderr: # s : (address array byte) -> <void> # syscall b8/copy-to-EAX 4/imm32/write cd/syscall 0x80/imm8 - # restore registers + # . restore registers 5b/pop-to-EBX 5a/pop-to-EDX 59/pop-to-ECX @@ -347,4 +347,4 @@ Null-kernel-string: Abc-kernel-string: 41/A 62/b 63/c 00/null -# vim:nowrap:textwidth=0 +# . . vim:nowrap:textwidth=0 |