diff options
author | Kartik Agaram <vc@akkartik.com> | 2019-08-26 11:55:26 -0700 |
---|---|---|
committer | Kartik Agaram <vc@akkartik.com> | 2019-08-26 11:59:21 -0700 |
commit | 333525360b22f3d3ea31db46a4d2f1b4edbfebdb (patch) | |
tree | ed255f308542ba28a99d862d54d4992dcf749622 /examples/ex11.subx | |
parent | 22fb844ba4edf14eb85245a35f42e721658c4f8e (diff) | |
download | mu-333525360b22f3d3ea31db46a4d2f1b4edbfebdb.tar.gz |
5592 - switch register names to lowercase
Diffstat (limited to 'examples/ex11.subx')
-rw-r--r-- | examples/ex11.subx | 242 |
1 files changed, 121 insertions, 121 deletions
diff --git a/examples/ex11.subx b/examples/ex11.subx index 2c0f8627..ff0977df 100644 --- a/examples/ex11.subx +++ b/examples/ex11.subx @@ -21,14 +21,14 @@ Entry: # run all tests e8/call run-tests/disp32 # 'run-tests' is a function created automatically by SubX. It calls all functions that start with 'test-'. - # syscall(exit, EAX) - 89/copy 3/mod/direct 3/rm32/EBX . . . 0/r32/EAX . . # copy EAX to EBX - b8/copy-to-EAX 1/imm32/exit + # syscall(exit, eax) + 89/copy 3/mod/direct 3/rm32/ebx . . . 0/r32/eax . . # copy eax to ebx + b8/copy-to-eax 1/imm32/exit cd/syscall 0x80/imm8 # 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: # n = benchmark->length # s1 = s @@ -43,217 +43,217 @@ kernel-string-equal?: # s : null-terminated ascii string, benchmark : length-pr # return *s1 == 0 # # registers: - # i: ECX - # n: EDX - # s1: EDI - # s2: ESI - # c1: EAX - # c2: EBX + # i: ecx + # n: edx + # s1: edi + # s2: esi + # 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 - 53/push-EBX - 56/push-ESI - 57/push-EDI - # s1/EDI = s - 8b/copy 1/mod/*+disp8 5/rm32/EBP . . . 7/r32/EDI 8/disp8 . # copy *(EBP+8) to EDI - # n/EDX = benchmark->length - 8b/copy 1/mod/*+disp8 5/rm32/EBP . . . 2/r32/EDX 0xc/disp8 . # copy *(EBP+12) to EDX - 8b/copy 0/mod/indirect 2/rm32/EDX . . . 2/r32/EDX . . # copy *EDX to EDX - # s2/ESI = benchmark->data - 8b/copy 1/mod/*+disp8 5/rm32/EBP . . . 6/r32/ESI 0xc/disp8 . # copy *(EBP+12) to ESI - 81 0/subop/add 3/mod/direct 6/rm32/ESI . . . . . 4/imm32 # add to ESI - # i/ECX = c1/EAX = c2/EBX = 0 - b9/copy-to-ECX 0/imm32/exit - b8/copy-to-EAX 0/imm32 - bb/copy-to-EBX 0/imm32 + 51/push-ecx + 52/push-edx + 53/push-ebx + 56/push-esi + 57/push-edi + # s1/edi = s + 8b/copy 1/mod/*+disp8 5/rm32/ebp . . . 7/r32/edi 8/disp8 . # copy *(ebp+8) to edi + # n/edx = benchmark->length + 8b/copy 1/mod/*+disp8 5/rm32/ebp . . . 2/r32/edx 0xc/disp8 . # copy *(ebp+12) to edx + 8b/copy 0/mod/indirect 2/rm32/edx . . . 2/r32/edx . . # copy *edx to edx + # s2/esi = benchmark->data + 8b/copy 1/mod/*+disp8 5/rm32/ebp . . . 6/r32/esi 0xc/disp8 . # copy *(ebp+12) to esi + 81 0/subop/add 3/mod/direct 6/rm32/esi . . . . . 4/imm32 # add to esi + # i/ecx = c1/eax = c2/ebx = 0 + b9/copy-to-ecx 0/imm32/exit + b8/copy-to-eax 0/imm32 + bb/copy-to-ebx 0/imm32 $kernel-string-equal?:loop: # if (i >= n) break - 39/compare 3/mod/direct 1/rm32/ECX . . . 2/r32/EDX . . # compare ECX with EDX + 39/compare 3/mod/direct 1/rm32/ecx . . . 2/r32/edx . . # compare ecx with edx 7d/jump-if-greater-or-equal $kernel-string-equal?:break/disp8 # c1 = *s1 - 8a/copy-byte 0/mod/indirect 7/rm32/EDI . . . 0/r32/AL . . # copy byte at *EDI to AL + 8a/copy-byte 0/mod/indirect 7/rm32/edi . . . 0/r32/AL . . # copy byte at *edi to AL # c2 = *s2 - 8a/copy-byte 0/mod/indirect 6/rm32/ESI . . . 3/r32/BL . . # copy byte at *ESI to BL + 8a/copy-byte 0/mod/indirect 6/rm32/esi . . . 3/r32/BL . . # copy byte at *esi to BL # if (c1 == 0) return false - 3d/compare-EAX-and 0/imm32 + 3d/compare-eax-and 0/imm32 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 and EBX + 39/compare 3/mod/direct 0/rm32/eax . . . 3/r32/ebx . . # compare eax and ebx 75/jump-if-not-equal $kernel-string-equal?:false/disp8 # ++i - 41/increment-ECX + 41/increment-ecx # ++s1 - 47/increment-EDI + 47/increment-edi # ++s2 - 46/increment-ESI + 46/increment-esi eb/jump $kernel-string-equal?:loop/disp8 $kernel-string-equal?:break: # return *s1 == 0 - 8a/copy-byte 0/mod/indirect 7/rm32/EDI . . . 0/r32/AL . . # copy byte at *EDI to AL - 3d/compare-EAX-and 0/imm32 + 8a/copy-byte 0/mod/indirect 7/rm32/edi . . . 0/r32/AL . . # copy byte at *edi to AL + 3d/compare-eax-and 0/imm32 75/jump-if-not-equal $kernel-string-equal?:false/disp8 $kernel-string-equal?:true: - b8/copy-to-EAX 1/imm32 + b8/copy-to-eax 1/imm32 eb/jump $kernel-string-equal?:end/disp8 $kernel-string-equal?:false: - b8/copy-to-EAX 0/imm32 + b8/copy-to-eax 0/imm32 $kernel-string-equal?:end: # . restore registers - 5f/pop-to-EDI - 5e/pop-to-ESI - 5b/pop-to-EBX - 5a/pop-to-EDX - 59/pop-to-ECX + 5f/pop-to-edi + 5e/pop-to-esi + 5b/pop-to-ebx + 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-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 # . . 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-null-kernel-string-with-empty-array"/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-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 # . . 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-null-kernel-string-with-non-empty-array"/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-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 # . . 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-kernel-string-with-equal-array"/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-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 # . . 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-kernel-string-with-equal-array"/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-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 # . . 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-kernel-string-with-equal-array"/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-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 # . . 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-kernel-string-with-shorter-array"/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-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 # . . 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-kernel-string-with-longer-array"/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 # - helpers @@ -261,16 +261,16 @@ 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 - 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 - 53/push-EBX - # load args into EAX, EBX and ECX - 8b/copy 1/mod/*+disp8 5/rm32/EBP . . . 0/r32/EAX 8/disp8 . # copy *(EBP+8) to EAX - 8b/copy 1/mod/*+disp8 5/rm32/EBP . . . 3/r32/EBX 0xc/disp8 . # copy *(EBP+12) to EBX - # if (EAX == b/EBX) print('.') and return - 39/compare 3/mod/direct 0/rm32/EAX . . . 3/r32/EBX . . # compare EAX and EBX + 51/push-ecx + 53/push-ebx + # load args into eax, ebx and ecx + 8b/copy 1/mod/*+disp8 5/rm32/ebp . . . 0/r32/eax 8/disp8 . # copy *(ebp+8) to eax + 8b/copy 1/mod/*+disp8 5/rm32/ebp . . . 3/r32/ebx 0xc/disp8 . # copy *(ebp+12) to ebx + # if (eax == b/ebx) print('.') and return + 39/compare 3/mod/direct 0/rm32/eax . . . 3/r32/ebx . . # compare eax and ebx 75/jump-if-unequal $check-ints-equal:else/disp8 # . write-stderr('.') # . . push args @@ -278,65 +278,65 @@ check-ints-equal: # (a : int, b : int, msg : (address array byte)) -> boolean # . . call e8/call write-stderr/disp32 # . . discard args - 81 0/subop/add 3/mod/direct 4/rm32/ESP . . . . . 4/imm32 # add to ESP + 81 0/subop/add 3/mod/direct 4/rm32/esp . . . . . 4/imm32 # add to esp # . return eb/jump $check-ints-equal:end/disp8 # otherwise print(msg) $check-ints-equal:else: - # copy msg into ECX - 8b/copy 1/mod/*+disp8 5/rm32/EBP . . . 1/r32/ECX 0x10/disp8 . # copy *(EBP+16) to ECX - # print(ECX) + # copy msg into ecx + 8b/copy 1/mod/*+disp8 5/rm32/ebp . . . 1/r32/ecx 0x10/disp8 . # copy *(ebp+16) to ecx + # print(ecx) # . . push args - 51/push-ECX + 51/push-ecx # . . call e8/call write-stderr/disp32 # . . discard args - 81 0/subop/add 3/mod/direct 4/rm32/ESP . . . . . 4/imm32 # add to ESP + 81 0/subop/add 3/mod/direct 4/rm32/esp . . . . . 4/imm32 # add to esp # print newline # . . push args 68/push Newline/imm32 # . . call e8/call write-stderr/disp32 # . . discard args - 81 0/subop/add 3/mod/direct 4/rm32/ESP . . . . . 4/imm32 # add to ESP + 81 0/subop/add 3/mod/direct 4/rm32/esp . . . . . 4/imm32 # add to esp $check-ints-equal:end: # . restore registers - 5b/pop-to-EBX - 59/pop-to-ECX + 5b/pop-to-ebx + 59/pop-to-ecx # end - 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 write-stderr: # s : (address array byte) -> <void> # . 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 - 51/push-ECX - 52/push-EDX - 53/push-EBX + 50/push-eax + 51/push-ecx + 52/push-edx + 53/push-ebx # syscall(write, 2/stderr, (data) s+4, (size) *s) # . . fd = 2 (stderr) - bb/copy-to-EBX 2/imm32 + bb/copy-to-ebx 2/imm32 # . . x = s+4 - 8b/copy 1/mod/*+disp8 5/rm32/EBP . . . 1/r32/ECX 8/disp8 . # copy *(EBP+8) to ECX - 81 0/subop/add 3/mod/direct 1/rm32/ECX . . . . . 4/imm32 # add to ECX + 8b/copy 1/mod/*+disp8 5/rm32/ebp . . . 1/r32/ecx 8/disp8 . # copy *(ebp+8) to ecx + 81 0/subop/add 3/mod/direct 1/rm32/ecx . . . . . 4/imm32 # add to ecx # . . size = *s - 8b/copy 1/mod/*+disp8 5/rm32/EBP . . . 2/r32/EDX 8/disp8 . # copy *(EBP+8) to EDX - 8b/copy 0/mod/indirect 2/rm32/EDX . . . 2/r32/EDX . . # copy *EDX to EDX + 8b/copy 1/mod/*+disp8 5/rm32/ebp . . . 2/r32/edx 8/disp8 . # copy *(ebp+8) to edx + 8b/copy 0/mod/indirect 2/rm32/edx . . . 2/r32/edx . . # copy *edx to edx # . . syscall - b8/copy-to-EAX 4/imm32/write + b8/copy-to-eax 4/imm32/write cd/syscall 0x80/imm8 # . restore registers - 5b/pop-to-EBX - 5a/pop-to-EDX - 59/pop-to-ECX - 58/pop-to-EAX + 5b/pop-to-ebx + 5a/pop-to-edx + 59/pop-to-ecx + 58/pop-to-eax # . end - 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 == data 0x0a000000 |