diff options
Diffstat (limited to 'subx/apps/factorial.subx')
| -rw-r--r-- | subx/apps/factorial.subx | 88 |
1 files changed, 50 insertions, 38 deletions
diff --git a/subx/apps/factorial.subx b/subx/apps/factorial.subx index b74fba89..5cc51b64 100644 --- a/subx/apps/factorial.subx +++ b/subx/apps/factorial.subx @@ -20,15 +20,15 @@ # 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: + # prolog + 89/copy 3/mod/direct 5/rm32/EBP . . . 4/r32/ESP . . # copy ESP to EBP # if (argc > 1) - 8b/copy 0/mod/indirect 4/rm32/sib 4/base/ESP 4/index/none . 0/r32/EAX . . # copy *ESP to EAX - 3d/compare . . . . . . . 1/imm32 # compare EAX with 1 + 81 7/subop/compare 1/mod/*+disp8 4/rm32/SIB 5/base/EBP 4/index/none . . 0/disp8 1/imm32 # compare *EBP with 1 7e/jump-if-lesser-or-equal $run_main/disp8 # and if (argv[1] == "test") - 8b/copy 1/mod/*+disp8 4/rm32/sib 4/base/ESP 4/index/none . 0/r32/EAX 8/disp8 . # copy *(ESP+8) to EAX # push args - 50/push-EAX 68/push "test"/imm32 + ff 6/subop/push 1/mod/*+disp8 4/rm32/sib 5/base/EBP 4/index/none . . 0x8/disp8 . # push *(EBP+8) # call e8/call argv_equal/disp32 # discard args @@ -92,9 +92,9 @@ test_factorial: 81 0/subop/add 3/mod/direct 4/rm32/ESP . . . . . 4/imm32 # add 4 to ESP # check_ints_equal(EAX, 120, failure message) # push args - 50/push-EAX - 68/push 0x78/imm32/expected-120 68/push "F - test_factorial"/imm32 + 68/push 0x78/imm32/expected-120 + 50/push-EAX # call e8/call check_ints_equal/disp32 # discard args @@ -107,7 +107,7 @@ test_factorial: # print msg to stderr if a != b, otherwise print "." check_ints_equal: # (a : int, b : int, msg : (address array byte)) -> boolean # load args into EAX, EBX and ECX - 8b/copy 1/mod/*+disp8 4/rm32/sib 4/base/ESP 4/index/none . 0/r32/EAX 0xc/disp8 . # copy *(ESP+12) to EAX + 8b/copy 1/mod/*+disp8 4/rm32/sib 4/base/ESP 4/index/none . 0/r32/EAX 0x4/disp8 . # copy *(ESP+4) to EAX 8b/copy 1/mod/*+disp8 4/rm32/sib 4/base/ESP 4/index/none . 3/r32/EBX 0x8/disp8 . # copy *(ESP+8) to EBX # if EAX == b/EBX 39/compare 3/mod/direct 0/rm32/EAX . . . 3/r32/EBX . . # compare EAX and EBX @@ -124,7 +124,7 @@ check_ints_equal: # (a : int, b : int, msg : (address array byte)) -> boolean # else: $check_ints_equal:else: # copy msg into ECX - 8b/copy 1/mod/*+disp8 4/rm32/sib 4/base/ESP 4/index/none . 1/r32/ECX 4/disp8 . # copy *(ESP+4) to ECX + 8b/copy 1/mod/*+disp8 4/rm32/sib 4/base/ESP 4/index/none . 1/r32/ECX 0xc/disp8 . # copy *(ESP+12) to ECX # print(ECX) # push args 51/push-ECX @@ -160,12 +160,12 @@ argv_equal: # s : null-terminated ascii string, benchmark : length-prefixed asc # return *s1 == 0 # {{{ # initialize s into EDI - 8b/copy 1/mod/*+disp8 4/rm32/sib 4/base/ESP 4/index/none . 7/r32/EDI 8/disp8 . # copy *(ESP+8) to EDI + 8b/copy 1/mod/*+disp8 4/rm32/sib 4/base/ESP 4/index/none . 7/r32/EDI 4/disp8 . # copy *(ESP+4) to EDI # initialize benchmark length n into EDX - 8b/copy 1/mod/*+disp8 4/rm32/sib 4/base/ESP 4/index/none . 2/r32/EDX 4/disp8 . # copy *(ESP+4) to EDX + 8b/copy 1/mod/*+disp8 4/rm32/sib 4/base/ESP 4/index/none . 2/r32/EDX 8/disp8 . # copy *(ESP+8) to EDX 8b/copy 0/mod/indirect 2/rm32/EDX . . . 2/r32/EDX . . # copy *EDX to EDX # initialize benchmark data into ESI - 8b/copy 1/mod/*+disp8 4/rm32/sib 4/base/ESP 4/index/none . 6/r32/ESI 4/disp8 . # copy *(ESP+4) to ESI + 8b/copy 1/mod/*+disp8 4/rm32/sib 4/base/ESP 4/index/none . 6/r32/ESI 8/disp8 . # copy *(ESP+8) to ESI 81 0/subop/add 3/mod/direct 6/rm32/ESI . . . . . 4/imm32 # add 4 to ESI # initialize loop counter i into ECX b9/copy . . . . . . . 0/imm32/exit # copy 1 to ECX @@ -207,16 +207,17 @@ $argv_fail: test_compare_null_argv_with_empty_array: # EAX = argv_equal(Null_argv, "") # push args - 68/push Null_argv/imm32 68/push ""/imm32 + 68/push Null_argv/imm32 # call e8/call argv_equal/disp32 # discard args 81 0/subop/add 3/mod/direct 4/rm32/ESP . . . . . 8/imm32 # add 8 to ESP - # call check_ints_equal(EAX, 1) - 50/push-EAX - 68/push 1/imm32/true + # call check_ints_equal(EAX, 1, msg) + # push args 68/push "F - test_compare_null_argv_with_empty_array"/imm32 + 68/push 1/imm32/true + 50/push-EAX # call e8/call check_ints_equal/disp32 # discard args @@ -226,16 +227,17 @@ test_compare_null_argv_with_empty_array: test_compare_null_argv_with_non_empty_array: # EAX = argv_equal(Null_argv, "Abc") # push args - 68/push Null_argv/imm32 68/push "Abc"/imm32 + 68/push Null_argv/imm32 # call e8/call argv_equal/disp32 # discard args 81 0/subop/add 3/mod/direct 4/rm32/ESP . . . . . 8/imm32 # add 8 to ESP - # call check_ints_equal(EAX, 0) - 50/push-EAX - 68/push 0/imm32/false + # call check_ints_equal(EAX, 0, msg) + # push args 68/push "F - test_compare_null_argv_with_non_empty_array"/imm32 + 68/push 0/imm32/false + 50/push-EAX # call e8/call check_ints_equal/disp32 # discard args @@ -245,16 +247,17 @@ test_compare_null_argv_with_non_empty_array: test_compare_argv_with_equal_array: # EAX = argv_equal(Abc_argv, "Abc") # push args - 68/push Abc_argv/imm32 68/push "Abc"/imm32 + 68/push Abc_argv/imm32 # call e8/call argv_equal/disp32 # discard args 81 0/subop/add 3/mod/direct 4/rm32/ESP . . . . . 8/imm32 # add 8 to ESP - # call check_ints_equal(EAX, 1) - 50/push-EAX - 68/push 1/imm32/true + # call check_ints_equal(EAX, 1, msg) + # push args 68/push "F - test_compare_argv_with_equal_array"/imm32 + 68/push 1/imm32/true + 50/push-EAX # call e8/call check_ints_equal/disp32 # discard args @@ -264,16 +267,17 @@ test_compare_argv_with_equal_array: test_compare_argv_with_inequal_array: # EAX = argv_equal(Abc_argv, "Adc") # push args - 68/push Abc_argv/imm32 68/push "Adc"/imm32 + 68/push Abc_argv/imm32 # call e8/call argv_equal/disp32 # discard args 81 0/subop/add 3/mod/direct 4/rm32/ESP . . . . . 8/imm32 # add 8 to ESP - # call check_ints_equal(EAX, 0) - 50/push-EAX - 68/push 0/imm32/false + # call check_ints_equal(EAX, 0, msg) + # push args 68/push "F - test_compare_argv_with_equal_array"/imm32 + 68/push 0/imm32/false + 50/push-EAX # call e8/call check_ints_equal/disp32 # discard args @@ -283,16 +287,17 @@ test_compare_argv_with_inequal_array: test_compare_argv_with_empty_array: # EAX = argv_equal(Abc_argv, "") # push args - 68/push Abc_argv/imm32 68/push ""/imm32 + 68/push Abc_argv/imm32 # call e8/call argv_equal/disp32 # discard args 81 0/subop/add 3/mod/direct 4/rm32/ESP . . . . . 8/imm32 # add 8 to ESP # call check_ints_equal(EAX, 0) - 50/push-EAX - 68/push 0/imm32/false + # push args 68/push "F - test_compare_argv_with_equal_array"/imm32 + 68/push 0/imm32/false + 50/push-EAX # call e8/call check_ints_equal/disp32 # discard args @@ -302,16 +307,17 @@ test_compare_argv_with_empty_array: test_compare_argv_with_shorter_array: # EAX = argv_equal(Abc_argv, "Ab") # push args - 68/push Abc_argv/imm32 68/push "Ab"/imm32 + 68/push Abc_argv/imm32 # call e8/call argv_equal/disp32 # discard args 81 0/subop/add 3/mod/direct 4/rm32/ESP . . . . . 8/imm32 # add 8 to ESP # call check_ints_equal(EAX, 0) - 50/push-EAX - 68/push 0/imm32/false + # push args 68/push "F - test_compare_argv_with_shorter_array"/imm32 + 68/push 0/imm32/false + 50/push-EAX # call e8/call check_ints_equal/disp32 # discard args @@ -321,16 +327,17 @@ test_compare_argv_with_shorter_array: test_compare_argv_with_longer_array: # EAX = argv_equal(Abc_argv, "Abcd") # push args - 68/push Abc_argv/imm32 68/push "Abcd"/imm32 + 68/push Abc_argv/imm32 # call e8/call argv_equal/disp32 # discard args 81 0/subop/add 3/mod/direct 4/rm32/ESP . . . . . 8/imm32 # add 8 to ESP # call check_ints_equal(EAX, 0) - 50/push-EAX - 68/push 0/imm32/false + # push args 68/push "F - test_compare_argv_with_longer_array"/imm32 + 68/push 0/imm32/false + 50/push-EAX # call e8/call check_ints_equal/disp32 # discard args @@ -339,6 +346,9 @@ test_compare_argv_with_longer_array: # }}} 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 # save registers 50/push-EAX 51/push-ECX @@ -348,10 +358,10 @@ write_stderr: # s : (address array byte) -> <void> # fd = 2 (stderr) bb/copy . . . . . . . 2/imm32 # copy 2 to EBX # x = s+4 - 8b/copy 1/mod/*+disp8 4/rm32/SIB 4/base/ESP 4/index/none . 1/r32/ECX 0x14/disp8 . # copy *(ESP+20) to ECX + 8b/copy 1/mod/*+disp8 4/rm32/SIB 5/base/EBP 4/index/none . 1/r32/ECX 8/disp8 . # copy *(EBP+8) to ECX 81 0/subop/add 3/mod/direct 1/rm32/ECX . . . . . 4/imm32 # add 4 to ECX # size = *s - 8b/copy 1/mod/*+disp8 4/rm32/SIB 4/base/ESP 4/index/none . 2/r32/EDX 0x14/disp8 . # copy *(ESP+20) to EDX + 8b/copy 1/mod/*+disp8 4/rm32/SIB 5/base/EBP 4/index/none . 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 # call write() b8/copy . . . . . . . 4/imm32/write # copy 1 to EAX @@ -362,6 +372,8 @@ write_stderr: # s : (address array byte) -> <void> 59/pop-ECX 58/pop-EAX # end + 89/copy 3/mod/direct 4/rm32/ESP . . . 5/r32/EBP . . # copy EBP to ESP + 5d/pop-to-EBP c3/return == data |