diff options
Diffstat (limited to 'subx/apps/crenshaw2-1.subx')
| -rw-r--r-- | subx/apps/crenshaw2-1.subx | 858 |
1 files changed, 429 insertions, 429 deletions
diff --git a/subx/apps/crenshaw2-1.subx b/subx/apps/crenshaw2-1.subx index 94f8a3bc..94fd8efa 100644 --- a/subx/apps/crenshaw2-1.subx +++ b/subx/apps/crenshaw2-1.subx @@ -26,609 +26,609 @@ # naming conventions. == 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 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 # main: run tests if necessary, call 'compile' if not - # prolog - 89/copy 3/mod/direct 5/rm32/EBP . . . 4/r32/ESP . . # copy ESP to EBP - # if (argc > 1) - 81 7/subop/compare 1/mod/*+disp8 4/rm32/sib 5/base/EBP 4/index/none . . 0/disp8 1/imm32 # compare *EBP - 7e/jump-if-lesser-or-equal $run-main/disp8 - # and if (argv[1] == "test") + # prolog + 89/copy 3/mod/direct 5/rm32/EBP . . . 4/r32/ESP . . # copy ESP to EBP + # if (argc > 1) + 81 7/subop/compare 1/mod/*+disp8 4/rm32/sib 5/base/EBP 4/index/none . . 0/disp8 1/imm32 # compare *EBP + 7e/jump-if-lesser-or-equal $run-main/disp8 + # and if (argv[1] == "test") # . push args - 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) + 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 kernel-string-equal/disp32 + e8/call kernel-string-equal/disp32 # . discard args - 81 0/subop/add 3/mod/direct 4/rm32/ESP . . . . . 8/imm32 # add to ESP + 81 0/subop/add 3/mod/direct 4/rm32/ESP . . . . . 8/imm32 # add to ESP # . check result - 3d/compare-EAX 1/imm32 - 75/jump-if-not-equal $run-main/disp8 - # then return run-tests() - e8/call run-tests/disp32 -#? e8/call test-get-num-reads-multiple-digits/disp32 - 8b/copy 0/mod/indirect 5/rm32/.disp32 . . 3/r32/EBX Num-test-failures/disp32 # copy *Num-test-failures to EBX - eb/jump $main:end/disp8 + 3d/compare-EAX 1/imm32 + 75/jump-if-not-equal $run-main/disp8 + # then return run-tests() + e8/call run-tests/disp32 +#? e8/call test-get-num-reads-multiple-digits/disp32 + 8b/copy 0/mod/indirect 5/rm32/.disp32 . . 3/r32/EBX Num-test-failures/disp32 # copy *Num-test-failures to EBX + eb/jump $main:end/disp8 $run-main: - # allocate space for an exit-descriptor + # allocate space for an exit-descriptor # . var ed/EAX : (address exit-descriptor) - 81 5/subop/subtract 3/mod/direct 4/rm32/ESP . . . . . 8/imm32 # subtract from ESP - 8d/copy-address 0/mod/indirect 4/rm32/sib 4/base/ESP 4/index/none . 0/r32/EAX . . # copy ESP to EAX + 81 5/subop/subtract 3/mod/direct 4/rm32/ESP . . . . . 8/imm32 # subtract from ESP + 8d/copy-address 0/mod/indirect 4/rm32/sib 4/base/ESP 4/index/none . 0/r32/EAX . . # copy ESP to EAX # . clear ed->target (so we really exit) - c7/copy 0/mod/direct 0/rm32/EAX . . . . . 0/imm32 # copy to *EAX - # compile(Stdin, 1/stdout, 2/stderr, ed) + c7/copy 0/mod/direct 0/rm32/EAX . . . . . 0/imm32 # copy to *EAX + # compile(Stdin, 1/stdout, 2/stderr, ed) # . push args - 50/push-EAX/ed - 68/push 2/imm32/stderr - 68/push 1/imm32/stdout - 68/push Stdin/imm32 + 50/push-EAX/ed + 68/push 2/imm32/stderr + 68/push 1/imm32/stdout + 68/push Stdin/imm32 # . call - e8/call compile/disp32 + e8/call compile/disp32 # . discard args - 81 0/subop/add 3/mod/direct 4/rm32/ESP . . . . . 0x10/imm32 # add to ESP - # syscall(exit, 0) - bb/copy-to-EBX 0/imm32 + 81 0/subop/add 3/mod/direct 4/rm32/ESP . . . . . 0x10/imm32 # add to ESP + # syscall(exit, 0) + bb/copy-to-EBX 0/imm32 $main:end: - b8/copy-to-EAX 1/imm32/exit - cd/syscall 0x80/imm8 + b8/copy-to-EAX 1/imm32/exit + cd/syscall 0x80/imm8 # the main entry point compile: # in : fd or (address stream), out : fd or (address stream), err : fd or (address stream), ed : (address exit-descriptor) -> <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 - # Look = get-char(in) + # 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 + # Look = get-char(in) # . push args - ff 6/subop/push 1/mod/*+disp8 4/rm32/sib 5/base/EBP 4/index/none . . 8/disp8 . # push *(EBP+8) + ff 6/subop/push 1/mod/*+disp8 4/rm32/sib 5/base/EBP 4/index/none . . 8/disp8 . # push *(EBP+8) # . call - e8/call get-char/disp32 + e8/call get-char/disp32 # . discard args - 81 0/subop/add 3/mod/direct 4/rm32/ESP . . . . . 4/imm32 # add to ESP - # var num/ECX : (address stream) on the stack - # Numbers can be 32 bits or 8 hex bytes long. One of them will be in 'Look', so we need space for 7 bytes. - # We won't add more, so that we can get overflow-handling for free. - # Add 12 bytes for 'read', 'write' and 'length' fields, for a total of 19 bytes, or 0x13 in hex. - 81 5/subop/subtract 3/mod/direct 4/rm32/ESP . . . . . 0x13/imm32 # subtract from ESP - 8d/copy-address 0/mod/indirect 4/rm32/sib 4/base/ESP 4/index/none . 1/r32/ECX . . # copy ESP to ECX - # num->length = 7 - c7/copy 1/mod/*+disp8 1/rm32/ECX . . . . 8/disp8 7/imm32 # copy to *(ECX+8) - # clear-stream(num) + 81 0/subop/add 3/mod/direct 4/rm32/ESP . . . . . 4/imm32 # add to ESP + # var num/ECX : (address stream) on the stack + # Numbers can be 32 bits or 8 hex bytes long. One of them will be in 'Look', so we need space for 7 bytes. + # We won't add more, so that we can get overflow-handling for free. + # Add 12 bytes for 'read', 'write' and 'length' fields, for a total of 19 bytes, or 0x13 in hex. + 81 5/subop/subtract 3/mod/direct 4/rm32/ESP . . . . . 0x13/imm32 # subtract from ESP + 8d/copy-address 0/mod/indirect 4/rm32/sib 4/base/ESP 4/index/none . 1/r32/ECX . . # copy ESP to ECX + # num->length = 7 + c7/copy 1/mod/*+disp8 1/rm32/ECX . . . . 8/disp8 7/imm32 # copy to *(ECX+8) + # clear-stream(num) # . push args - 51/push-ECX + 51/push-ECX # . call - e8/call clear-stream/disp32 + e8/call clear-stream/disp32 # . discard args - 81 0/subop/add 3/mod/direct 4/rm32/ESP . . . . . 4/imm32 # add to ESP - # get-num(in, num, err, ed) + 81 0/subop/add 3/mod/direct 4/rm32/ESP . . . . . 4/imm32 # add to ESP + # get-num(in, num, err, ed) # . push args - ff 6/subop/push 1/mod/*+disp8 4/rm32/sib 5/base/EBP 4/index/none . . 0x14/disp8 . # push *(EBP+20) - ff 6/subop/push 1/mod/*+disp8 4/rm32/sib 5/base/EBP 4/index/none . . 0x10/disp8 . # push *(EBP+16) - 51/push-ECX/num - ff 6/subop/push 1/mod/*+disp8 4/rm32/sib 5/base/EBP 4/index/none . . 8/disp8 . # push *(EBP+8) + ff 6/subop/push 1/mod/*+disp8 4/rm32/sib 5/base/EBP 4/index/none . . 0x14/disp8 . # push *(EBP+20) + ff 6/subop/push 1/mod/*+disp8 4/rm32/sib 5/base/EBP 4/index/none . . 0x10/disp8 . # push *(EBP+16) + 51/push-ECX/num + ff 6/subop/push 1/mod/*+disp8 4/rm32/sib 5/base/EBP 4/index/none . . 8/disp8 . # push *(EBP+8) # . call - e8/call get-num/disp32 + e8/call get-num/disp32 # . discard args - 81 0/subop/add 3/mod/direct 4/rm32/ESP . . . . . 0x10/imm32 # add to ESP - # EAX = write(_test-stream, "Ab") + 81 0/subop/add 3/mod/direct 4/rm32/ESP . . . . . 0x10/imm32 # add to ESP + # EAX = write(_test-stream, "Ab") # . push args - 68/push "Ab"/imm32 - 68/push _test-stream/imm32 + 68/push "Ab"/imm32 + 68/push _test-stream/imm32 # . call - e8/call write/disp32 + e8/call write/disp32 # . discard args - 81 0/subop/add 3/mod/direct 4/rm32/ESP . . . . . 8/imm32 # add to ESP - # EAX = write(out, "bb/copy-to-EBX ") + 81 0/subop/add 3/mod/direct 4/rm32/ESP . . . . . 8/imm32 # add to ESP + # EAX = write(out, "bb/copy-to-EBX ") # . push args - 68/push "bb/copy-to-EBX "/imm32 - ff 6/subop/push 1/mod/*+disp8 4/rm32/sib 5/base/EBP 4/index/none . . 0xc/disp8 . # push *(EBP+12) + 68/push "bb/copy-to-EBX "/imm32 + ff 6/subop/push 1/mod/*+disp8 4/rm32/sib 5/base/EBP 4/index/none . . 0xc/disp8 . # push *(EBP+12) # . call - e8/call write/disp32 + e8/call write/disp32 # . discard args - 81 0/subop/add 3/mod/direct 4/rm32/ESP . . . . . 8/imm32 # add to ESP - # write-stream(out, num) + 81 0/subop/add 3/mod/direct 4/rm32/ESP . . . . . 8/imm32 # add to ESP + # write-stream(out, num) # . push args - 51/push-ECX/num - ff 6/subop/push 1/mod/*+disp8 4/rm32/sib 5/base/EBP 4/index/none . . 0xc/disp8 . # push *(EBP+12) + 51/push-ECX/num + ff 6/subop/push 1/mod/*+disp8 4/rm32/sib 5/base/EBP 4/index/none . . 0xc/disp8 . # push *(EBP+12) # . call - e8/call write-stream/disp32 + e8/call write-stream/disp32 # . discard args - 81 0/subop/add 3/mod/direct 4/rm32/ESP . . . . . 8/imm32 # add to ESP - # write(out, Newline) + 81 0/subop/add 3/mod/direct 4/rm32/ESP . . . . . 8/imm32 # add to ESP + # write(out, Newline) # . push args - 68/push Newline/imm32 - ff 6/subop/push 1/mod/*+disp8 4/rm32/sib 5/base/EBP 4/index/none . . 0xc/disp8 . # push *(EBP+12) + 68/push Newline/imm32 + ff 6/subop/push 1/mod/*+disp8 4/rm32/sib 5/base/EBP 4/index/none . . 0xc/disp8 . # push *(EBP+12) # . call - e8/call write/disp32 + e8/call write/disp32 # . discard args - 81 0/subop/add 3/mod/direct 4/rm32/ESP . . . . . 8/imm32 # add to ESP - # EAX = write(out, "b8/copy-to-EAX 1/imm32/exit") + 81 0/subop/add 3/mod/direct 4/rm32/ESP . . . . . 8/imm32 # add to ESP + # EAX = write(out, "b8/copy-to-EAX 1/imm32/exit") # . push args - 68/push "b8/copy-to-EAX 1/imm32/exit"/imm32 - ff 6/subop/push 1/mod/*+disp8 4/rm32/sib 5/base/EBP 4/index/none . . 0xc/disp8 . # push *(EBP+12) + 68/push "b8/copy-to-EAX 1/imm32/exit"/imm32 + ff 6/subop/push 1/mod/*+disp8 4/rm32/sib 5/base/EBP 4/index/none . . 0xc/disp8 . # push *(EBP+12) # . call - e8/call write/disp32 + e8/call write/disp32 # . discard args - 81 0/subop/add 3/mod/direct 4/rm32/ESP . . . . . 8/imm32 # add to ESP - # EAX = write(out, Newline) + 81 0/subop/add 3/mod/direct 4/rm32/ESP . . . . . 8/imm32 # add to ESP + # EAX = write(out, Newline) # . push args - 68/push Newline/imm32 - ff 6/subop/push 1/mod/*+disp8 4/rm32/sib 5/base/EBP 4/index/none . . 0xc/disp8 . # push *(EBP+12) + 68/push Newline/imm32 + ff 6/subop/push 1/mod/*+disp8 4/rm32/sib 5/base/EBP 4/index/none . . 0xc/disp8 . # push *(EBP+12) # . call - e8/call write/disp32 + e8/call write/disp32 # . discard args - 81 0/subop/add 3/mod/direct 4/rm32/ESP . . . . . 8/imm32 # add to ESP - # EAX = write(out, "cd/syscall 0x80/imm8") + 81 0/subop/add 3/mod/direct 4/rm32/ESP . . . . . 8/imm32 # add to ESP + # EAX = write(out, "cd/syscall 0x80/imm8") # . push args - 68/push "cd/syscall 0x80/imm8"/imm32 - ff 6/subop/push 1/mod/*+disp8 4/rm32/sib 5/base/EBP 4/index/none . . 0xc/disp8 . # push *(EBP+12) + 68/push "cd/syscall 0x80/imm8"/imm32 + ff 6/subop/push 1/mod/*+disp8 4/rm32/sib 5/base/EBP 4/index/none . . 0xc/disp8 . # push *(EBP+12) # . call - e8/call write/disp32 + e8/call write/disp32 # . discard args - 81 0/subop/add 3/mod/direct 4/rm32/ESP . . . . . 8/imm32 # add to ESP - # EAX = write(out, Newline) + 81 0/subop/add 3/mod/direct 4/rm32/ESP . . . . . 8/imm32 # add to ESP + # EAX = write(out, Newline) # . push args - 68/push Newline/imm32 - ff 6/subop/push 1/mod/*+disp8 4/rm32/sib 5/base/EBP 4/index/none . . 0xc/disp8 . # push *(EBP+12) + 68/push Newline/imm32 + ff 6/subop/push 1/mod/*+disp8 4/rm32/sib 5/base/EBP 4/index/none . . 0xc/disp8 . # push *(EBP+12) # . call - e8/call write/disp32 + e8/call write/disp32 # . discard args - 81 0/subop/add 3/mod/direct 4/rm32/ESP . . . . . 8/imm32 # add to ESP - # restore registers - 59/pop-to-ECX - 58/pop-to-EAX - # epilog - 89/copy 3/mod/direct 4/rm32/ESP . . . 5/r32/EBP . . # copy EBP to ESP - 5d/pop-to-EBP - c3/return + 81 0/subop/add 3/mod/direct 4/rm32/ESP . . . . . 8/imm32 # add to ESP + # restore registers + 59/pop-to-ECX + 58/pop-to-EAX + # epilog + 89/copy 3/mod/direct 4/rm32/ESP . . . 5/r32/EBP . . # copy EBP to ESP + 5d/pop-to-EBP + c3/return # Read a single digit into 'out'. Abort if there are none, or if there is no space in 'out'. # Input comes from the global variable 'Look', and we leave the next byte from # 'in' into it on exit. get-num: # in : (address buffered-file), out : (address stream), err : fd or (address stream), ed : (address exit-descriptor) -> <void> - # pseudocode: - # if !is-digit?(Look) expected(ed, err, "integer") - # if out.write >= out.length - # write(err, "Error: too many digits in number\n") - # stop(ed, 1) - # out.data[out.write] = LSB(Look) - # ++out.write - # Look = get-char(in) - # - # within the loop we'll try to keep things in registers: - # ESI : in - # EDI : out - # EAX : temp - # ECX : out->write - # EDX : out->length - # EBX : temp2 - # We can't allocate Look to a register because it gets written implicitly in - # get-char in each iteration of the loop. (Thereby demonstrating that it's - # not the right interface for us. But we'll keep it just to follow Crenshaw.) - # - # prolog - 55/push-EBP - 89/copy 3/mod/direct 5/rm32/EBP . . . 4/r32/ESP . . # copy ESP to EBP - # EAX = is-digit?(Look) - # . push args - ff 6/subop/push 0/mod/indirect 5/rm32/.disp32 . . . Look/disp32 . # push *Look - # . call - e8/call is-digit?/disp32 - # . discard args - 81 0/subop/add 3/mod/direct 4/rm32/ESP . . . . . 4/imm32 # add to ESP - # if EAX == 0 error - 3d/compare-EAX 0/imm32 - 75/jump-if-not-equal $get-num:main/disp8 + # pseudocode: + # if !is-digit?(Look) expected(ed, err, "integer") + # if out.write >= out.length + # write(err, "Error: too many digits in number\n") + # stop(ed, 1) + # out.data[out.write] = LSB(Look) + # ++out.write + # Look = get-char(in) + # + # within the loop we'll try to keep things in registers: + # ESI : in + # EDI : out + # EAX : temp + # ECX : out->write + # EDX : out->length + # EBX : temp2 + # We can't allocate Look to a register because it gets written implicitly in + # get-char in each iteration of the loop. (Thereby demonstrating that it's + # not the right interface for us. But we'll keep it just to follow Crenshaw.) + # + # prolog + 55/push-EBP + 89/copy 3/mod/direct 5/rm32/EBP . . . 4/r32/ESP . . # copy ESP to EBP + # EAX = is-digit?(Look) + # . push args + ff 6/subop/push 0/mod/indirect 5/rm32/.disp32 . . . Look/disp32 . # push *Look + # . call + e8/call is-digit?/disp32 + # . discard args + 81 0/subop/add 3/mod/direct 4/rm32/ESP . . . . . 4/imm32 # add to ESP + # if EAX == 0 error + 3d/compare-EAX 0/imm32 + 75/jump-if-not-equal $get-num:main/disp8 # . expected(ed, err, "integer") # push args - 68/push "integer"/imm32 - ff 6/subop/push 1/mod/*+disp8 4/rm32/sib 5/base/EBP 4/index/none . . 0x10/disp8 . # push *(EBP+16) - ff 6/subop/push 1/mod/*+disp8 4/rm32/sib 5/base/EBP 4/index/none . . 0x14/disp8 . # push *(EBP+20) + 68/push "integer"/imm32 + ff 6/subop/push 1/mod/*+disp8 4/rm32/sib 5/base/EBP 4/index/none . . 0x10/disp8 . # push *(EBP+16) + ff 6/subop/push 1/mod/*+disp8 4/rm32/sib 5/base/EBP 4/index/none . . 0x14/disp8 . # push *(EBP+20) # call - e8/call expected/disp32 # never returns + e8/call expected/disp32 # never returns # 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 $get-num:main: - # save registers - 50/push-EAX - 51/push-ECX - 52/push-EDX - 53/push-EBX - 56/push-ESI - 57/push-EDI - # read necessary variables to registers + # save registers + 50/push-EAX + 51/push-ECX + 52/push-EDX + 53/push-EBX + 56/push-ESI + 57/push-EDI + # read necessary variables to registers # ESI = in - 8b/copy 1/mod/*+disp8 4/rm32/sib 5/base/EBP 4/index/none . 6/r32/ESI 8/disp8 . # copy *(EBP+8) to ESI + 8b/copy 1/mod/*+disp8 4/rm32/sib 5/base/EBP 4/index/none . 6/r32/ESI 8/disp8 . # copy *(EBP+8) to ESI # EDI = out - 8b/copy 1/mod/*+disp8 4/rm32/sib 5/base/EBP 4/index/none . 7/r32/EDI 0xc/disp8 . # copy *(EBP+12) to EDI + 8b/copy 1/mod/*+disp8 4/rm32/sib 5/base/EBP 4/index/none . 7/r32/EDI 0xc/disp8 . # copy *(EBP+12) to EDI # ECX = out->write - 8b/copy 0/mod/indirect 7/rm32/EDI . . . 1/r32/ECX . . # copy *EDI to ECX + 8b/copy 0/mod/indirect 7/rm32/EDI . . . 1/r32/ECX . . # copy *EDI to ECX # EDX = out->length - 8b/copy 1/mod/*+disp8 7/rm32/EDI . . . 2/r32/EDX 8/disp8 . # copy *(EDI+8) to EDX - # if out->write >= out->length error - 3b/compare 3/mod/direct 1/rm32/ECX . . . 2/r32/EDX . . # compare EDX with ECX - 7d/jump-if-lesser $get-num:stage2/disp8 + 8b/copy 1/mod/*+disp8 7/rm32/EDI . . . 2/r32/EDX 8/disp8 . # copy *(EDI+8) to EDX + # if out->write >= out->length error + 3b/compare 3/mod/direct 1/rm32/ECX . . . 2/r32/EDX . . # compare EDX with ECX + 7d/jump-if-lesser $get-num:stage2/disp8 # error(ed, err, "get-num: too many digits in number") # TODO: show full number # . push args - 68/push "get-num: too many digits in number"/imm32 - ff 6/subop/push 1/mod/*+disp8 4/rm32/sib 5/base/EBP 4/index/none . . 0x10/disp8 . # push *(EBP+16) - ff 6/subop/push 1/mod/*+disp8 4/rm32/sib 5/base/EBP 4/index/none . . 0x14/disp8 . # push *(EBP+20) + 68/push "get-num: too many digits in number"/imm32 + ff 6/subop/push 1/mod/*+disp8 4/rm32/sib 5/base/EBP 4/index/none . . 0x10/disp8 . # push *(EBP+16) + ff 6/subop/push 1/mod/*+disp8 4/rm32/sib 5/base/EBP 4/index/none . . 0x14/disp8 . # push *(EBP+20) # . call - e8/call error/disp32 # never returns + e8/call error/disp32 # never returns # . 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 $get-num:stage2: - # out->data[out->write] = LSB(Look) - 8d/copy-address 1/mod/*+disp8 4/rm32/sib 7/base/EDI 1/index/ECX . 3/r32/EBX 0xc/disp8 . # copy EDI+ECX+12 to EBX - 8b/copy 0/mod/indirect 5/rm32/.disp32 . . 0/r32/EAX Look/disp32 . # copy *Look to EAX - 88/copy-byte 0/mod/indirect 3/rm32/EBX . . . 0/r32/AL . . # copy byte at AL to *EBX - # ++out->write - 41/increment-ECX - # Look = get-char(in) + # out->data[out->write] = LSB(Look) + 8d/copy-address 1/mod/*+disp8 4/rm32/sib 7/base/EDI 1/index/ECX . 3/r32/EBX 0xc/disp8 . # copy EDI+ECX+12 to EBX + 8b/copy 0/mod/indirect 5/rm32/.disp32 . . 0/r32/EAX Look/disp32 . # copy *Look to EAX + 88/copy-byte 0/mod/indirect 3/rm32/EBX . . . 0/r32/AL . . # copy byte at AL to *EBX + # ++out->write + 41/increment-ECX + # Look = get-char(in) # . push args - 56/push-ESI + 56/push-ESI # . call - e8/call get-char/disp32 + e8/call get-char/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 $get-num:loop-end: - # persist necessary variables from registers - 89/copy 0/mod/indirect 7/rm32/EDI . . . 1/r32/ECX . . # copy ECX to *EDI - # restore registers - 5f/pop-to-EDI - 5e/pop-to-ESI - 5b/pop-to-EBX - 5a/pop-to-EDX - 59/pop-to-ECX - 58/pop-to-EAX - # epilog - 89/copy 3/mod/direct 4/rm32/ESP . . . 5/r32/EBP . . # copy EBP to ESP - 5d/pop-to-EBP - c3/return + # persist necessary variables from registers + 89/copy 0/mod/indirect 7/rm32/EDI . . . 1/r32/ECX . . # copy ECX to *EDI + # restore registers + 5f/pop-to-EDI + 5e/pop-to-ESI + 5b/pop-to-EBX + 5a/pop-to-EDX + 59/pop-to-ECX + 58/pop-to-EAX + # epilog + 89/copy 3/mod/direct 4/rm32/ESP . . . 5/r32/EBP . . # copy EBP to ESP + 5d/pop-to-EBP + c3/return test-get-num-reads-single-digit: - # - check that get-num returns first character if it's a digit - # This test uses exit-descriptors. Use EBP for setting up local variables. - 55/push-EBP - 89/copy 3/mod/direct 5/rm32/EBP . . . 4/r32/ESP . . # copy ESP to EBP - # - clear all streams - # clear-stream(_test-stream) + # - check that get-num returns first character if it's a digit + # This test uses exit-descriptors. Use EBP for setting up local variables. + 55/push-EBP + 89/copy 3/mod/direct 5/rm32/EBP . . . 4/r32/ESP . . # copy ESP to EBP + # - clear all streams + # clear-stream(_test-stream) # . push args - 68/push _test-stream/imm32 + 68/push _test-stream/imm32 # . call - e8/call clear-stream/disp32 + e8/call clear-stream/disp32 # . discard args - 81 0/subop/add 3/mod/direct 4/rm32/ESP . . . . . 4/imm32 # add to ESP - # clear-stream(_test-buffered-file+4) + 81 0/subop/add 3/mod/direct 4/rm32/ESP . . . . . 4/imm32 # add to ESP + # clear-stream(_test-buffered-file+4) # . push args - b8/copy-to-EAX _test-buffered-file/imm32 - 05/add-to-EAX 4/imm32 - 50/push-EAX + b8/copy-to-EAX _test-buffered-file/imm32 + 05/add-to-EAX 4/imm32 + 50/push-EAX # . call - e8/call clear-stream/disp32 + e8/call clear-stream/disp32 # . discard args - 81 0/subop/add 3/mod/direct 4/rm32/ESP . . . . . 4/imm32 # add to ESP - # clear-stream(_test-output-stream) + 81 0/subop/add 3/mod/direct 4/rm32/ESP . . . . . 4/imm32 # add to ESP + # clear-stream(_test-output-stream) # . push args - 68/push _test-output-stream/imm32 + 68/push _test-output-stream/imm32 # . call - e8/call clear-stream/disp32 + e8/call clear-stream/disp32 # . discard args - 81 0/subop/add 3/mod/direct 4/rm32/ESP . . . . . 4/imm32 # add to ESP - # clear-stream(_test-error-stream) + 81 0/subop/add 3/mod/direct 4/rm32/ESP . . . . . 4/imm32 # add to ESP + # clear-stream(_test-error-stream) # . push args - 68/push _test-error-stream/imm32 + 68/push _test-error-stream/imm32 # . call - e8/call clear-stream/disp32 + e8/call clear-stream/disp32 # . discard args - 81 0/subop/add 3/mod/direct 4/rm32/ESP . . . . . 4/imm32 # add to ESP - # - initialize 'in' - # write(_test-stream, "3") + 81 0/subop/add 3/mod/direct 4/rm32/ESP . . . . . 4/imm32 # add to ESP + # - initialize 'in' + # write(_test-stream, "3") # . push args - 68/push "3"/imm32 - 68/push _test-stream/imm32 + 68/push "3"/imm32 + 68/push _test-stream/imm32 # . call - e8/call write/disp32 + e8/call write/disp32 # . discard args - 81 0/subop/add 3/mod/direct 4/rm32/ESP . . . . . 8/imm32 # add to ESP - # - initialize exit-descriptor 'ed' - # allocate on stack - # var ed/EAX : (address exit-descriptor) - 81 5/subop/subtract 3/mod/direct 4/rm32/ESP . . . . . 8/imm32 # subtract from ESP - 8d/copy-address 0/mod/indirect 4/rm32/sib 4/base/ESP 4/index/none . 0/r32/EAX . . # copy ESP to EAX - # size the exit-descriptor for the call to get-num below - # tailor-exit-descriptor(ed, 16) + 81 0/subop/add 3/mod/direct 4/rm32/ESP . . . . . 8/imm32 # add to ESP + # - initialize exit-descriptor 'ed' + # allocate on stack + # var ed/EAX : (address exit-descriptor) + 81 5/subop/subtract 3/mod/direct 4/rm32/ESP . . . . . 8/imm32 # subtract from ESP + 8d/copy-address 0/mod/indirect 4/rm32/sib 4/base/ESP 4/index/none . 0/r32/EAX . . # copy ESP to EAX + # size the exit-descriptor for the call to get-num below + # tailor-exit-descriptor(ed, 16) # . push args - 68/push 0x10/imm32/nbytes-of-args-for-get-num - 50/push-EAX/ed + 68/push 0x10/imm32/nbytes-of-args-for-get-num + 50/push-EAX/ed # . call - e8/call tailor-exit-descriptor/disp32 + e8/call tailor-exit-descriptor/disp32 # . discard args - 81 0/subop/add 3/mod/direct 4/rm32/ESP . . . . . 8/imm32 # add to ESP - # - prime the pump - # get-char(_test-buffered-file) + 81 0/subop/add 3/mod/direct 4/rm32/ESP . . . . . 8/imm32 # add to ESP + # - prime the pump + # get-char(_test-buffered-file) # . push args - 68/push _test-buffered-file/imm32 + 68/push _test-buffered-file/imm32 # . call - e8/call get-char/disp32 + e8/call get-char/disp32 # . discard args - 81 0/subop/add 3/mod/direct 4/rm32/ESP . . . . . 4/imm32 # add to ESP - ## get-num(in, out, err, ed) + 81 0/subop/add 3/mod/direct 4/rm32/ESP . . . . . 4/imm32 # add to ESP + ## get-num(in, out, err, ed) # . push args - 50/push-EAX/ed - 68/push _test-error-stream/imm32 - 68/push _test-output-stream/imm32 - 68/push _test-buffered-file/imm32 + 50/push-EAX/ed + 68/push _test-error-stream/imm32 + 68/push _test-output-stream/imm32 + 68/push _test-buffered-file/imm32 # . call - e8/call get-num/disp32 - ## registers except ESP may be clobbered at this point + e8/call get-num/disp32 + ## registers except ESP may be clobbered at this point # . discard args - 81 0/subop/add 3/mod/direct 4/rm32/ESP . . . . . 0x10/imm32 # add to ESP - # check-ints-equal(*_test-output-stream.data, '3') + 81 0/subop/add 3/mod/direct 4/rm32/ESP . . . . . 0x10/imm32 # add to ESP + # check-ints-equal(*_test-output-stream.data, '3') # . push args - 68/push "F - test-get-num-reads-single-digit"/imm32 - 68/push 0x33/imm32 - b8/copy-to-EAX _test-output-stream/imm32 - ff 6/subop/push 1/mod/*+disp8 0/rm32/EAX . . . . 0xc/disp8 . # push *(EAX+12) + 68/push "F - test-get-num-reads-single-digit"/imm32 + 68/push 0x33/imm32 + b8/copy-to-EAX _test-output-stream/imm32 + ff 6/subop/push 1/mod/*+disp8 0/rm32/EAX . . . . 0xc/disp8 . # push *(EAX+12) # . call - e8/call check-ints-equal/disp32 + e8/call check-ints-equal/disp32 # . discard args - 81 0/subop/add 3/mod/direct 4/rm32/ESP . . . . . 0xc/imm32 # add to ESP - # reclaim locals - 81 0/subop/add 3/mod/direct 4/rm32/ESP . . . . . 8/imm32 # add to ESP - 5d/pop-to-EBP - c3/return + 81 0/subop/add 3/mod/direct 4/rm32/ESP . . . . . 0xc/imm32 # add to ESP + # reclaim locals + 81 0/subop/add 3/mod/direct 4/rm32/ESP . . . . . 8/imm32 # add to ESP + 5d/pop-to-EBP + c3/return test-get-num-aborts-on-non-digit-in-Look: - # - check that get-num returns first character if it's a digit - # This test uses exit-descriptors. Use EBP for setting up local variables. - 55/push-EBP - 89/copy 3/mod/direct 5/rm32/EBP . . . 4/r32/ESP . . # copy ESP to EBP - # - clear all streams - # clear-stream(_test-stream) + # - check that get-num returns first character if it's a digit + # This test uses exit-descriptors. Use EBP for setting up local variables. + 55/push-EBP + 89/copy 3/mod/direct 5/rm32/EBP . . . 4/r32/ESP . . # copy ESP to EBP + # - clear all streams + # clear-stream(_test-stream) # . push args - 68/push _test-stream/imm32 + 68/push _test-stream/imm32 # . call - e8/call clear-stream/disp32 + e8/call clear-stream/disp32 # . discard args - 81 0/subop/add 3/mod/direct 4/rm32/ESP . . . . . 4/imm32 # add to ESP - # clear-stream(_test-buffered-file+4) + 81 0/subop/add 3/mod/direct 4/rm32/ESP . . . . . 4/imm32 # add to ESP + # clear-stream(_test-buffered-file+4) # . push args - b8/copy-to-EAX _test-buffered-file/imm32 - 05/add-to-EAX 4/imm32 - 50/push-EAX + b8/copy-to-EAX _test-buffered-file/imm32 + 05/add-to-EAX 4/imm32 + 50/push-EAX # . call - e8/call clear-stream/disp32 + e8/call clear-stream/disp32 # . discard args - 81 0/subop/add 3/mod/direct 4/rm32/ESP . . . . . 4/imm32 # add to ESP - # clear-stream(_test-output-stream) + 81 0/subop/add 3/mod/direct 4/rm32/ESP . . . . . 4/imm32 # add to ESP + # clear-stream(_test-output-stream) # . push args - 68/push _test-output-stream/imm32 + 68/push _test-output-stream/imm32 # . call - e8/call clear-stream/disp32 + e8/call clear-stream/disp32 # . discard args - 81 0/subop/add 3/mod/direct 4/rm32/ESP . . . . . 4/imm32 # add to ESP - # clear-stream(_test-error-stream) + 81 0/subop/add 3/mod/direct 4/rm32/ESP . . . . . 4/imm32 # add to ESP + # clear-stream(_test-error-stream) # . push args - 68/push _test-error-stream/imm32 + 68/push _test-error-stream/imm32 # . call - e8/call clear-stream/disp32 + e8/call clear-stream/disp32 # . discard args - 81 0/subop/add 3/mod/direct 4/rm32/ESP . . . . . 4/imm32 # add to ESP - # - initialize 'in' - # write(_test-stream, "3") + 81 0/subop/add 3/mod/direct 4/rm32/ESP . . . . . 4/imm32 # add to ESP + # - initialize 'in' + # write(_test-stream, "3") # . push args - 68/push "3"/imm32 - 68/push _test-stream/imm32 + 68/push "3"/imm32 + 68/push _test-stream/imm32 # . call - e8/call write/disp32 + e8/call write/disp32 # . discard args - 81 0/subop/add 3/mod/direct 4/rm32/ESP . . . . . 8/imm32 # add to ESP - # - initialize exit-descriptor 'ed' - # allocate on stack - # var ed/EAX : (address exit-descriptor) - 81 5/subop/subtract 3/mod/direct 4/rm32/ESP . . . . . 8/imm32 # subtract from ESP - 8d/copy-address 0/mod/indirect 4/rm32/sib 4/base/ESP 4/index/none . 0/r32/EAX . . # copy ESP to EAX - # size the exit-descriptor for the call to get-num below - # tailor-exit-descriptor(ed, 16) + 81 0/subop/add 3/mod/direct 4/rm32/ESP . . . . . 8/imm32 # add to ESP + # - initialize exit-descriptor 'ed' + # allocate on stack + # var ed/EAX : (address exit-descriptor) + 81 5/subop/subtract 3/mod/direct 4/rm32/ESP . . . . . 8/imm32 # subtract from ESP + 8d/copy-address 0/mod/indirect 4/rm32/sib 4/base/ESP 4/index/none . 0/r32/EAX . . # copy ESP to EAX + # size the exit-descriptor for the call to get-num below + # tailor-exit-descriptor(ed, 16) # . push args - 68/push 0x10/imm32/nbytes-of-args-for-get-num - 50/push-EAX/ed + 68/push 0x10/imm32/nbytes-of-args-for-get-num + 50/push-EAX/ed # . call - e8/call tailor-exit-descriptor/disp32 + e8/call tailor-exit-descriptor/disp32 # . discard args - 81 0/subop/add 3/mod/direct 4/rm32/ESP . . . . . 8/imm32 # add to ESP - # - don't initialize Look - # - get-num(in, out, err, ed) + 81 0/subop/add 3/mod/direct 4/rm32/ESP . . . . . 8/imm32 # add to ESP + # - don't initialize Look + # - get-num(in, out, err, ed) # . push args - 50/push-EAX/ed - 68/push _test-error-stream/imm32 - 68/push _test-output-stream/imm32 - 68/push _test-buffered-file/imm32 + 50/push-EAX/ed + 68/push _test-error-stream/imm32 + 68/push _test-output-stream/imm32 + 68/push _test-buffered-file/imm32 # . call - e8/call get-num/disp32 - # registers except ESP may be clobbered at this point + e8/call get-num/disp32 + # registers except ESP may be clobbered at this point # . discard args - 81 0/subop/add 3/mod/direct 4/rm32/ESP . . . . . 0x10/imm32 # add to ESP - # - check that get-num tried to call exit(1) - # check-ints-equal(ed->value, 2, msg) # i.e. stop was called with value 1 + 81 0/subop/add 3/mod/direct 4/rm32/ESP . . . . . 0x10/imm32 # add to ESP + # - check that get-num tried to call exit(1) + # check-ints-equal(ed->value, 2, msg) # i.e. stop was called with value 1 # . push args - 68/push "F - test-get-num-aborts-on-non-digit-in-Look"/imm32 - 68/push 2/imm32 + 68/push "F - test-get-num-aborts-on-non-digit-in-Look"/imm32 + 68/push 2/imm32 # . push ed->value - ff 6/subop/push 1/mod/*+disp8 0/rm32/EAX . . . . 4/disp8 . # push *(EAX+4) + ff 6/subop/push 1/mod/*+disp8 0/rm32/EAX . . . . 4/disp8 . # push *(EAX+4) # . call - e8/call check-ints-equal/disp32 + e8/call check-ints-equal/disp32 # . discard args - 81 0/subop/add 3/mod/direct 4/rm32/ESP . . . . . 0xc/imm32 # add to ESP - # reclaim locals - 81 0/subop/add 3/mod/direct 4/rm32/ESP . . . . . 8/imm32 # add to ESP - 5d/pop-to-EBP - c3/return + 81 0/subop/add 3/mod/direct 4/rm32/ESP . . . . . 0xc/imm32 # add to ESP + # reclaim locals + 81 0/subop/add 3/mod/direct 4/rm32/ESP . . . . . 8/imm32 # add to ESP + 5d/pop-to-EBP + c3/return ## helpers # write(f, "Error: "+s+" expected\n") then stop(ed, 1) expected: # ed : (address exit-descriptor), f : fd or (address stream), s : (address array byte) -> <void> - # prolog - 55/push-EBP - 89/copy 3/mod/direct 5/rm32/EBP . . . 4/r32/ESP . . # copy ESP to EBP - # write(f, "Error: ") + # prolog + 55/push-EBP + 89/copy 3/mod/direct 5/rm32/EBP . . . 4/r32/ESP . . # copy ESP to EBP + # write(f, "Error: ") # . push args - 68/push "Error: "/imm32 - ff 6/subop/push 1/mod/*+disp8 4/rm32/sib 5/base/EBP 4/index/none . . 0xc/disp8 . # push *(EBP+12) + 68/push "Error: "/imm32 + ff 6/subop/push 1/mod/*+disp8 4/rm32/sib 5/base/EBP 4/index/none . . 0xc/disp8 . # push *(EBP+12) # . call - e8/call write/disp32 + e8/call write/disp32 # . discard args - 81 0/subop/add 3/mod/direct 4/rm32/ESP . . . . . 8/imm32 # add to ESP - # write(f, s) + 81 0/subop/add 3/mod/direct 4/rm32/ESP . . . . . 8/imm32 # add to ESP + # write(f, s) # . push args - ff 6/subop/push 1/mod/*+disp8 4/rm32/sib 5/base/EBP 4/index/none . . 0x10/disp8 . # push *(EBP+16) - ff 6/subop/push 1/mod/*+disp8 4/rm32/sib 5/base/EBP 4/index/none . . 0xc/disp8 . # push *(EBP+12) + ff 6/subop/push 1/mod/*+disp8 4/rm32/sib 5/base/EBP 4/index/none . . 0x10/disp8 . # push *(EBP+16) + ff 6/subop/push 1/mod/*+disp8 4/rm32/sib 5/base/EBP 4/index/none . . 0xc/disp8 . # push *(EBP+12) # . call - e8/call write/disp32 + e8/call write/disp32 # . discard args - 81 0/subop/add 3/mod/direct 4/rm32/ESP . . . . . 8/imm32 # add to ESP - # write(f, " expected") + 81 0/subop/add 3/mod/direct 4/rm32/ESP . . . . . 8/imm32 # add to ESP + # write(f, " expected") # . push args - 68/push " expected"/imm32 - ff 6/subop/push 1/mod/*+disp8 4/rm32/sib 5/base/EBP 4/index/none . . 0xc/disp8 . # push *(EBP+12) + 68/push " expected"/imm32 + ff 6/subop/push 1/mod/*+disp8 4/rm32/sib 5/base/EBP 4/index/none . . 0xc/disp8 . # push *(EBP+12) # . call - e8/call write/disp32 + e8/call write/disp32 # . discard args - 81 0/subop/add 3/mod/direct 4/rm32/ESP . . . . . 8/imm32 # add to ESP - # write(f, Newline) + 81 0/subop/add 3/mod/direct 4/rm32/ESP . . . . . 8/imm32 # add to ESP + # write(f, Newline) # . push args - 68/push Newline/imm32 - ff 6/subop/push 1/mod/*+disp8 4/rm32/sib 5/base/EBP 4/index/none . . 0xc/disp8 . # push *(EBP+12) + 68/push Newline/imm32 + ff 6/subop/push 1/mod/*+disp8 4/rm32/sib 5/base/EBP 4/index/none . . 0xc/disp8 . # push *(EBP+12) # . call - e8/call write/disp32 + e8/call write/disp32 # . discard args - 81 0/subop/add 3/mod/direct 4/rm32/ESP . . . . . 8/imm32 # add to ESP - # stop(ed, 1) + 81 0/subop/add 3/mod/direct 4/rm32/ESP . . . . . 8/imm32 # add to ESP + # stop(ed, 1) # . push args - 68/push 1/imm32 - ff 6/subop/push 1/mod/*+disp8 4/rm32/sib 5/base/EBP 4/index/none . . 8/disp8 . # push *(EBP+8) + 68/push 1/imm32 + ff 6/subop/push 1/mod/*+disp8 4/rm32/sib 5/base/EBP 4/index/none . . 8/disp8 . # push *(EBP+8) # . call - e8/call stop/disp32 - ## should never get past this point - # epilog - 89/copy 3/mod/direct 4/rm32/ESP . . . 5/r32/EBP . . # copy EBP to ESP - 5d/pop-to-EBP - c3/return + e8/call stop/disp32 + ## should never get past this point + # epilog + 89/copy 3/mod/direct 4/rm32/ESP . . . 5/r32/EBP . . # copy EBP to ESP + 5d/pop-to-EBP + c3/return # write(f, "Error: "+s+"\n") then stop(ed, 1) error: # ed : (address exit-descriptor), f : fd or (address stream), s : (address array byte) -> <void> - # prolog - 55/push-EBP - 89/copy 3/mod/direct 5/rm32/EBP . . . 4/r32/ESP . . # copy ESP to EBP - # write(f, "Error: ") + # prolog + 55/push-EBP + 89/copy 3/mod/direct 5/rm32/EBP . . . 4/r32/ESP . . # copy ESP to EBP + # write(f, "Error: ") # . push args - 68/push "Error: "/imm32 - ff 6/subop/push 1/mod/*+disp8 4/rm32/sib 5/base/EBP 4/index/none . . 0xc/disp8 . # push *(EBP+12) + 68/push "Error: "/imm32 + ff 6/subop/push 1/mod/*+disp8 4/rm32/sib 5/base/EBP 4/index/none . . 0xc/disp8 . # push *(EBP+12) # . call - e8/call write/disp32 + e8/call write/disp32 # . discard args - 81 0/subop/add 3/mod/direct 4/rm32/ESP . . . . . 8/imm32 # add to ESP - # write(f, s) + 81 0/subop/add 3/mod/direct 4/rm32/ESP . . . . . 8/imm32 # add to ESP + # write(f, s) # . push args - ff 6/subop/push 1/mod/*+disp8 4/rm32/sib 5/base/EBP 4/index/none . . 0x10/disp8 . # push *(EBP+16) - ff 6/subop/push 1/mod/*+disp8 4/rm32/sib 5/base/EBP 4/index/none . . 0xc/disp8 . # push *(EBP+12) + ff 6/subop/push 1/mod/*+disp8 4/rm32/sib 5/base/EBP 4/index/none . . 0x10/disp8 . # push *(EBP+16) + ff 6/subop/push 1/mod/*+disp8 4/rm32/sib 5/base/EBP 4/index/none . . 0xc/disp8 . # push *(EBP+12) # . call - e8/call write/disp32 + e8/call write/disp32 # . discard args - 81 0/subop/add 3/mod/direct 4/rm32/ESP . . . . . 8/imm32 # add to ESP - # write(f, Newline) + 81 0/subop/add 3/mod/direct 4/rm32/ESP . . . . . 8/imm32 # add to ESP + # write(f, Newline) # . push args - 68/push Newline/imm32 - ff 6/subop/push 1/mod/*+disp8 4/rm32/sib 5/base/EBP 4/index/none . . 0xc/disp8 . # push *(EBP+12) + 68/push Newline/imm32 + ff 6/subop/push 1/mod/*+disp8 4/rm32/sib 5/base/EBP 4/index/none . . 0xc/disp8 . # push *(EBP+12) # . call - e8/call write/disp32 + e8/call write/disp32 # . discard args - 81 0/subop/add 3/mod/direct 4/rm32/ESP . . . . . 8/imm32 # add to ESP - # stop(ed, 1) + 81 0/subop/add 3/mod/direct 4/rm32/ESP . . . . . 8/imm32 # add to ESP + # stop(ed, 1) # . push args - 68/push 1/imm32 - ff 6/subop/push 1/mod/*+disp8 4/rm32/sib 5/base/EBP 4/index/none . . 8/disp8 . # push *(EBP+8) + 68/push 1/imm32 + ff 6/subop/push 1/mod/*+disp8 4/rm32/sib 5/base/EBP 4/index/none . . 8/disp8 . # push *(EBP+8) # . call - e8/call stop/disp32 - ## should never get past this point - # epilog - 89/copy 3/mod/direct 4/rm32/ESP . . . 5/r32/EBP . . # copy EBP to ESP - 5d/pop-to-EBP - c3/return + e8/call stop/disp32 + ## should never get past this point + # epilog + 89/copy 3/mod/direct 4/rm32/ESP . . . 5/r32/EBP . . # copy EBP to ESP + 5d/pop-to-EBP + c3/return # read a byte from 'f', and store it in 'Look' get-char: # f : (address buffered-file) -> <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 - # read-byte(f) - # . push args - ff 6/subop/push 1/mod/*+disp8 4/rm32/sib 5/base/EBP 4/index/none . . 0x8/disp8 . # push *(EBP+8) - # . call - e8/call read-byte/disp32 - # . discard args - 81 0/subop/add 3/mod/direct 4/rm32/ESP . . . . . 4/imm32 # add to ESP - # save EAX to Look - 89/copy 0/mod/indirect 5/rm32/.disp32 . . 0/r32/EAX Look/disp32 . # copy EAX to *Look - # restore registers - 58/pop-to-EAX - # epilog - 89/copy 3/mod/direct 4/rm32/ESP . . . 5/r32/EBP . . # copy EBP to ESP - 5d/pop-to-EBP - c3/return + # prolog + 55/push-EBP + 89/copy 3/mod/direct 5/rm32/EBP . . . 4/r32/ESP . . # copy ESP to EBP + # save registers + 50/push-EAX + # read-byte(f) + # . push args + ff 6/subop/push 1/mod/*+disp8 4/rm32/sib 5/base/EBP 4/index/none . . 0x8/disp8 . # push *(EBP+8) + # . call + e8/call read-byte/disp32 + # . discard args + 81 0/subop/add 3/mod/direct 4/rm32/ESP . . . . . 4/imm32 # add to ESP + # save EAX to Look + 89/copy 0/mod/indirect 5/rm32/.disp32 . . 0/r32/EAX Look/disp32 . # copy EAX to *Look + # restore registers + 58/pop-to-EAX + # epilog + 89/copy 3/mod/direct 4/rm32/ESP . . . 5/r32/EBP . . # copy EBP to ESP + 5d/pop-to-EBP + c3/return is-digit?: # c : int -> bool/EAX - # prolog - 55/push-EBP - 89/copy 3/mod/direct 5/rm32/EBP . . . 4/r32/ESP . . # copy ESP to EBP - # EAX = false - b8/copy-to-EAX 0/imm32 - # if c < '0' return false - 81 7/subop/compare 1/mod/*+disp8 4/rm32/sib 5/base/EBP 4/index/none . . 0x8/disp8 0x30/imm32 # compare *(EBP+8) - 7c/jump-if-lesser $is-digit?:end/disp8 - # if c > '9' return false - 81 7/subop/compare 1/mod/*+disp8 4/rm32/sib 5/base/EBP 4/index/none . . 0x8/disp8 0x39/imm32 # compare *(EBP+8) - 7f/jump-if-greater $is-digit?:end/disp8 - # otherwise return true - b8/copy-to-EAX 1/imm32 + # prolog + 55/push-EBP + 89/copy 3/mod/direct 5/rm32/EBP . . . 4/r32/ESP . . # copy ESP to EBP + # EAX = false + b8/copy-to-EAX 0/imm32 + # if c < '0' return false + 81 7/subop/compare 1/mod/*+disp8 4/rm32/sib 5/base/EBP 4/index/none . . 0x8/disp8 0x30/imm32 # compare *(EBP+8) + 7c/jump-if-lesser $is-digit?:end/disp8 + # if c > '9' return false + 81 7/subop/compare 1/mod/*+disp8 4/rm32/sib 5/base/EBP 4/index/none . . 0x8/disp8 0x39/imm32 # compare *(EBP+8) + 7f/jump-if-greater $is-digit?:end/disp8 + # otherwise return true + b8/copy-to-EAX 1/imm32 $is-digit?:end: - # epilog - 89/copy 3/mod/direct 4/rm32/ESP . . . 5/r32/EBP . . # copy EBP to ESP - 5d/pop-to-EBP - c3/return + # epilog + 89/copy 3/mod/direct 4/rm32/ESP . . . 5/r32/EBP . . # copy EBP to ESP + 5d/pop-to-EBP + c3/return == data Look: # (char) - 00 00 00 00 # = 0 + 00 00 00 00 # = 0 _test-output-stream: - # current write index - 00 00 00 00 - # current read index - 00 00 00 00 - # length (= 8) - 08 00 00 00 - # data - 00 00 00 00 00 00 00 00 # 8 bytes + # current write index + 00 00 00 00 + # current read index + 00 00 00 00 + # length (= 8) + 08 00 00 00 + # data + 00 00 00 00 00 00 00 00 # 8 bytes _test-error-stream: - # current write index - 00 00 00 00 - # current read index - 00 00 00 00 - # length (= 8) - 08 00 00 00 - # data - 00 00 00 00 00 00 00 00 # 8 bytes + # current write index + 00 00 00 00 + # current read index + 00 00 00 00 + # length (= 8) + 08 00 00 00 + # data + 00 00 00 00 00 00 00 00 # 8 bytes # vim:nowrap:textwidth=0 |