diff options
| author | Kartik K. Agaram <vc@akkartik.com> | 2018-09-24 18:48:41 -0700 |
|---|---|---|
| committer | Kartik Agaram <vc@akkartik.com> | 2018-09-24 22:55:37 -0700 |
| commit | c5d9a32fe6add8c986942261dd22377f911d1ca0 (patch) | |
| tree | b963fff418cc486cd3a7c1bf1b5d1c036a938045 | |
| parent | 9353569934e08c4ba531da5b64aeb4ae08ac2aae (diff) | |
| download | mu-c5d9a32fe6add8c986942261dd22377f911d1ca0.tar.gz | |
4516
More calling convention tweaks. Use EBP to get consistently at parameters and locals. Always put the first function argument closest to EBP.
| -rw-r--r-- | subx/apps/crenshaw2-1 | bin | 1205 -> 1217 bytes | |||
| -rw-r--r-- | subx/apps/crenshaw2-1.subx | 18 | ||||
| -rwxr-xr-x | subx/apps/factorial | bin | 1208 -> 1215 bytes | |||
| -rw-r--r-- | subx/apps/factorial.subx | 88 | ||||
| -rwxr-xr-x | subx/examples/ex10 | bin | 165 -> 165 bytes | |||
| -rw-r--r-- | subx/examples/ex10.subx | 19 | ||||
| -rw-r--r-- | subx/examples/ex11 | bin | 1028 -> 1034 bytes | |||
| -rw-r--r-- | subx/examples/ex11.subx | 76 | ||||
| -rwxr-xr-x | subx/examples/ex8 | bin | 143 -> 144 bytes | |||
| -rw-r--r-- | subx/examples/ex8.subx | 8 | ||||
| -rwxr-xr-x | subx/examples/ex9 | bin | 129 -> 129 bytes | |||
| -rw-r--r-- | subx/examples/ex9.subx | 19 |
12 files changed, 130 insertions, 98 deletions
diff --git a/subx/apps/crenshaw2-1 b/subx/apps/crenshaw2-1 index c89ebf5d..f5d28502 100644 --- a/subx/apps/crenshaw2-1 +++ b/subx/apps/crenshaw2-1 Binary files differdiff --git a/subx/apps/crenshaw2-1.subx b/subx/apps/crenshaw2-1.subx index 6d2e3297..8ffded90 100644 --- a/subx/apps/crenshaw2-1.subx +++ b/subx/apps/crenshaw2-1.subx @@ -318,6 +318,9 @@ 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 @@ -327,10 +330,10 @@ 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 @@ -341,9 +344,14 @@ 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 write_stdout: # 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 @@ -353,10 +361,10 @@ write_stdout: # s : (address array byte) -> <void> # fd = 1 (stdout) bb/copy . . . . . . . 1/imm32 # copy 1 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 4/base/ESP 4/index/none . 1/r32/ECX 8/disp8 . # copy *(ESP+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 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 # call write() b8/copy . . . . . . . 4/imm32/write # copy 1 to EAX @@ -367,6 +375,8 @@ write_stdout: # 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 diff --git a/subx/apps/factorial b/subx/apps/factorial index 4f93fe32..f0505cba 100755 --- a/subx/apps/factorial +++ b/subx/apps/factorial Binary files differdiff --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 diff --git a/subx/examples/ex10 b/subx/examples/ex10 index 7035843c..59cbc497 100755 --- a/subx/examples/ex10 +++ b/subx/examples/ex10 Binary files differdiff --git a/subx/examples/ex10.subx b/subx/examples/ex10.subx index 81f4f2ae..92e9f1f4 100644 --- a/subx/examples/ex10.subx +++ b/subx/examples/ex10.subx @@ -18,14 +18,13 @@ # argv[0]: *(ESP+4) # argv[1]: *(ESP+8) # ... - # s1 = argv[1] (EAX) - 8b/copy 1/mod/*+disp8 4/rm32/sib 4/base/ESP 4/index/none . 0/r32/EAX 8/disp8 . # copy *(ESP+8) to EAX - # s2 = argv[2] (EBX) - 8b/copy 1/mod/*+disp8 4/rm32/sib 4/base/ESP 4/index/none . 3/r32/EBX 0xc/disp8 . # copy *(ESP+12) to EBX - # call argv_equal(s1, s2) - # push args - 50/push-EAX - 53/push-EBX + # prolog + 89/copy 3/mod/direct 5/rm32/EBP . . . 4/r32/ESP . . # copy ESP to EBP + # call argv_equal(argv[1], argv[2]) + # push argv[2] + ff 6/subop/push 1/mod/*+disp8 4/rm32/sib 5/base/EBP 4/index/none . . 0xc/disp8 . # push *(EBP+12) + # push argv[1] + 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 # exit(EAX) @@ -38,8 +37,8 @@ $exit: # reason for the name: the only place we should have null-terminated ascii strings is from commandline args argv_equal: # (s1, s2) : null-terminated ascii strings -> EAX : boolean # initialize s1 (ECX) and s2 (EDX) - 8b/copy 1/mod/*+disp8 4/rm32/sib 4/base/ESP 4/index/none . 1/r32/ECX 8/disp8 . # copy *(ESP+8) to ECX - 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 . 1/r32/ECX 4/disp8 . # copy *(ESP+4) to ECX + 8b/copy 1/mod/*+disp8 4/rm32/sib 4/base/ESP 4/index/none . 2/r32/EDX 8/disp8 . # copy *(ESP+8) to EDX # while (true) $argv_loop: # c1/EAX, c2/EBX = *s1, *s2 diff --git a/subx/examples/ex11 b/subx/examples/ex11 index fb11d1b6..646c2eb7 100644 --- a/subx/examples/ex11 +++ b/subx/examples/ex11 Binary files differdiff --git a/subx/examples/ex11.subx b/subx/examples/ex11.subx index 460c3430..b651bf22 100644 --- a/subx/examples/ex11.subx +++ b/subx/examples/ex11.subx @@ -44,12 +44,12 @@ 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 @@ -92,16 +92,17 @@ $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 @@ -111,16 +112,17 @@ 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 @@ -130,16 +132,17 @@ 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 @@ -149,16 +152,17 @@ 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 @@ -168,16 +172,17 @@ 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 @@ -187,16 +192,17 @@ 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 @@ -206,16 +212,17 @@ 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 @@ -227,7 +234,7 @@ test_compare_argv_with_longer_array: # 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 @@ -244,7 +251,7 @@ 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 @@ -263,6 +270,9 @@ $check_ints_equal:else: 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 # save registers 50/push-EAX 51/push-ECX @@ -272,10 +282,10 @@ 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 @@ -286,6 +296,8 @@ 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 diff --git a/subx/examples/ex8 b/subx/examples/ex8 index 463f83b8..8f95f543 100755 --- a/subx/examples/ex8 +++ b/subx/examples/ex8 Binary files differdiff --git a/subx/examples/ex8.subx b/subx/examples/ex8.subx index fb35dc7e..1a094b89 100644 --- a/subx/examples/ex8.subx +++ b/subx/examples/ex8.subx @@ -18,11 +18,11 @@ # 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 - # var s = argv[1] (EBX) - 8b/copy 1/mod/*+disp8 4/rm32/sib 4/base/ESP 4/index/none 3/r32/EBX 8/disp8 . # copy *(ESP+8) to EBX - # call ascii_length(EBX) + # prolog + 89/copy 3/mod/direct 5/rm32/EBP . . . 4/r32/ESP . . # copy ESP to EBP + # call ascii_length(argv[1]) # push args - 53/push-EBX + ff 6/subop/push 1/mod/*+disp8 4/rm32/sib 5/base/EBP 4/index/none . . 0x8/disp8 . # push *(EBP+8) # call e8/call ascii_length/disp32 # discard args diff --git a/subx/examples/ex9 b/subx/examples/ex9 index 874efe52..144cec89 100755 --- a/subx/examples/ex9 +++ b/subx/examples/ex9 Binary files differdiff --git a/subx/examples/ex9.subx b/subx/examples/ex9.subx index dde9fa37..8c0fba29 100644 --- a/subx/examples/ex9.subx +++ b/subx/examples/ex9.subx @@ -20,14 +20,13 @@ # 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 - # s1 = argv[1] (EAX) - 8b/copy 1/mod/*+disp8 4/rm32/sib 4/base/ESP 4/index/none 0/r32/EAX 8/disp8 . # copy *(ESP+8) to EAX - # s2 = argv[2] (EBX) - 8b/copy 1/mod/*+disp8 4/rm32/sib 4/base/ESP 4/index/none 3/r32/EBX 0xc/disp8 . # copy *(ESP+12) to EBX - # call string_equal(s1, s2) - # push args - 50/push-EAX - 53/push-EBX + # prolog + 89/copy 3/mod/direct 5/rm32/EBP . . . 4/r32/ESP . . # copy ESP to EBP + # call ascii_difference(argv[1], argv[2]) + # push argv[2] + ff 6/subop/push 1/mod/*+disp8 4/rm32/sib 5/base/EBP 4/index/none . . 0xc/disp8 . # push *(EBP+12) + # push argv[1] + ff 6/subop/push 1/mod/*+disp8 4/rm32/sib 5/base/EBP 4/index/none . . 0x8/disp8 . # push *(EBP+8) # call e8/call ascii_difference/disp32 # discard args @@ -39,10 +38,10 @@ ascii_difference: # (s1, s2) : null-terminated ascii strings # a = first letter of s1 (ECX) - 8b/copy 1/mod/*+disp8 4/rm32/sib 4/base/ESP 4/index/none 0/r32/EAX 8/disp8 . # copy *(ESP+8) to EAX + 8b/copy 1/mod/*+disp8 4/rm32/sib 4/base/ESP 4/index/none 0/r32/EAX 4/disp8 . # copy *(ESP+4) to EAX 8b/copy 0/mod/indirect 0/rm32/EAX . . . 0/r32/EAX . . # copy *EAX to EAX # b = first letter of s2 (EDX) - 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 8/disp8 # copy *(ESP+8) to ECX 8b/copy 0/mod/indirect 1/rm32/ECX . . . 1/r32/ECX . . # copy *ECX to ECX # a-b 29/subtract 3/mod/direct 0/rm32/EAX . . . 1/r32/ECX . . # subtract ECX from EAX |