diff options
Diffstat (limited to 'subx/apps/crenshaw2-1.subx')
| -rw-r--r-- | subx/apps/crenshaw2-1.subx | 292 |
1 files changed, 146 insertions, 146 deletions
diff --git a/subx/apps/crenshaw2-1.subx b/subx/apps/crenshaw2-1.subx index 62e2cb89..94eede9e 100644 --- a/subx/apps/crenshaw2-1.subx +++ b/subx/apps/crenshaw2-1.subx @@ -1,4 +1,4 @@ -## Port of https://github.com/akkartik/crenshaw/blob/master/tutor2.1.pas +# Port of https://github.com/akkartik/crenshaw/blob/master/tutor2.1.pas # Corresponds to the section "single digits" in https://compilers.iecc.com/crenshaw/tutor2.txt # # To run (from the subx directory): @@ -36,14 +36,14 @@ 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 + # . 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) - # 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 - # check result + # . check result 3d/compare-EAX 1/imm32 75/jump-if-not-equal $run-main/disp8 # then return run-tests() @@ -53,20 +53,20 @@ eb/jump $main:end/disp8 $run-main: # allocate space for an exit-descriptor - # var ed/EAX : (address 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 - # clear ed->target (so we really exit) + # . 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) - # push args + # . push args 50/push-EAX/ed 68/push 2/imm32/stderr 68/push 1/imm32/stdout 68/push Stdin/imm32 - # call + # . call e8/call compile/disp32 - # discard args + # . 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 @@ -83,11 +83,11 @@ compile: # in : fd or (address stream), out : fd or (address stream), err : fd 50/push-EAX 51/push-ECX # Look = get-char(in) - # push args + # . push args ff 6/subop/push 1/mod/*+disp8 4/rm32/sib 5/base/EBP 4/index/none . . 8/disp8 . # push *(EBP+8) - # call + # . call e8/call get-char/disp32 - # discard args + # . 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. @@ -98,85 +98,85 @@ compile: # in : fd or (address stream), out : fd or (address stream), err : fd # num->length = 7 c7/copy 1/mod/*+disp8 1/rm32/ECX . . . . 8/disp8 7/imm32 # copy to *(ECX+8) # clear-stream(num) - # push args + # . push args 51/push-ECX - # call + # . call e8/call clear-stream/disp32 - # discard args + # . discard args 81 0/subop/add 3/mod/direct 4/rm32/ESP . . . . . 4/imm32 # add to ESP # get-num(in, num, err, ed) - # push args + # . 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) - # call + # . call e8/call get-num/disp32 - # discard args + # . discard args 81 0/subop/add 3/mod/direct 4/rm32/ESP . . . . . 0x10/imm32 # add to ESP # EAX = write(_test-stream, "Ab") - # push args + # . push args 68/push "Ab"/imm32 68/push _test-stream/imm32 - # call + # . call e8/call write/disp32 - # discard args + # . discard args 81 0/subop/add 3/mod/direct 4/rm32/ESP . . . . . 8/imm32 # add to ESP # EAX = write(out, "bb/copy-to-EBX ") - # push args + # . 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) - # call + # . call e8/call write/disp32 - # discard args + # . discard args 81 0/subop/add 3/mod/direct 4/rm32/ESP . . . . . 8/imm32 # add to ESP # write-stream(out, num) - # push args + # . 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) - # call + # . call e8/call write-stream/disp32 - # discard args + # . discard args 81 0/subop/add 3/mod/direct 4/rm32/ESP . . . . . 8/imm32 # add to ESP # write(out, Newline) - # push args + # . 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) - # call + # . call e8/call write/disp32 - # discard args + # . 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") - # push args + # . 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) - # call + # . call e8/call write/disp32 - # discard args + # . discard args 81 0/subop/add 3/mod/direct 4/rm32/ESP . . . . . 8/imm32 # add to ESP # EAX = write(out, Newline) - # push args + # . 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) - # call + # . call e8/call write/disp32 - # discard args + # . discard args 81 0/subop/add 3/mod/direct 4/rm32/ESP . . . . . 8/imm32 # add to ESP # EAX = write(out, "cd/syscall 0x80/imm8") - # push args + # . 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) - # call + # . call e8/call write/disp32 - # discard args + # . discard args 81 0/subop/add 3/mod/direct 4/rm32/ESP . . . . . 8/imm32 # add to ESP # EAX = write(out, Newline) - # push args + # . 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) - # call + # . call e8/call write/disp32 - # discard args + # . discard args 81 0/subop/add 3/mod/direct 4/rm32/ESP . . . . . 8/imm32 # add to ESP # restore registers 59/pop-to-ECX @@ -214,16 +214,16 @@ get-num: # in : (address buffered-file), out : (address stream), err : fd or (a 55/push-EBP 89/copy 3/mod/direct 5/rm32/EBP . . . 4/r32/ESP . . # copy ESP to EBP # EAX = is-digit?(Look) - # push args + # . push args ff 6/subop/push 0/mod/indirect 5/rm32/.disp32 . . . Look/disp32 . # push *Look - # call + # . call e8/call is-digit?/disp32 - # discard args + # . 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") + # . 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) @@ -253,13 +253,13 @@ $get-num:main: 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 + # . 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) - # call + # . call e8/call error/disp32 # never returns - # discard args + # . discard args 81 0/subop/add 3/mod/direct 4/rm32/ESP . . . . . 0xc/imm32 # add to ESP $get-num:stage2: # out->data[out->write] = LSB(Look) @@ -269,11 +269,11 @@ $get-num:stage2: # ++out->write 41/increment-ECX # Look = get-char(in) - # push args + # . push args 56/push-ESI - # call + # . call e8/call get-char/disp32 - # discard args + # . discard args 81 0/subop/add 3/mod/direct 4/rm32/ESP . . . . . 4/imm32 # add to ESP $get-num:loop-end: # persist necessary variables from registers @@ -291,92 +291,92 @@ $get-num:loop-end: c3/return test-get-num-reads-single-digit: - ## check that get-num returns first character if it's a 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 all streams # clear-stream(_test-stream) - # push args + # . push args 68/push _test-stream/imm32 - # call + # . call e8/call clear-stream/disp32 - # discard args + # . discard args 81 0/subop/add 3/mod/direct 4/rm32/ESP . . . . . 4/imm32 # add to ESP # clear-stream(_test-buffered-file+4) - # push args + # . push args b8/copy-to-EAX _test-buffered-file/imm32 05/add-to-EAX 4/imm32 50/push-EAX - # call + # . call e8/call clear-stream/disp32 - # discard args + # . discard args 81 0/subop/add 3/mod/direct 4/rm32/ESP . . . . . 4/imm32 # add to ESP # clear-stream(_test-output-stream) - # push args + # . push args 68/push _test-output-stream/imm32 - # call + # . call e8/call clear-stream/disp32 - # discard args + # . discard args 81 0/subop/add 3/mod/direct 4/rm32/ESP . . . . . 4/imm32 # add to ESP # clear-stream(_test-error-stream) - # push args + # . push args 68/push _test-error-stream/imm32 - # call + # . call e8/call clear-stream/disp32 - # discard args + # . discard args 81 0/subop/add 3/mod/direct 4/rm32/ESP . . . . . 4/imm32 # add to ESP - ## initialize 'in' + # - initialize 'in' # write(_test-stream, "3") - # push args + # . push args 68/push "3"/imm32 68/push _test-stream/imm32 - # call + # . call e8/call write/disp32 - # discard args + # . discard args 81 0/subop/add 3/mod/direct 4/rm32/ESP . . . . . 8/imm32 # add to ESP - ## initialize exit-descriptor 'ed' + # - 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 + # . push args 68/push 0x10/imm32/nbytes-of-args-for-get-num 50/push-EAX/ed - # call + # . call e8/call tailor-exit-descriptor/disp32 - # discard args + # . discard args 81 0/subop/add 3/mod/direct 4/rm32/ESP . . . . . 8/imm32 # add to ESP - ## prime the pump + # - prime the pump # get-char(_test-buffered-file) - # push args + # . push args 68/push _test-buffered-file/imm32 - # call + # . call e8/call get-char/disp32 - # discard args + # . discard args 81 0/subop/add 3/mod/direct 4/rm32/ESP . . . . . 4/imm32 # add to ESP ## get-num(in, out, err, ed) - # push args + # . push args 50/push-EAX/ed 68/push _test-error-stream/imm32 68/push _test-output-stream/imm32 68/push _test-buffered-file/imm32 - # call + # . call e8/call get-num/disp32 ## registers except ESP may be clobbered at this point - # discard args + # . 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') - # push args + # . 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) - # 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 # reclaim locals 81 0/subop/add 3/mod/direct 4/rm32/ESP . . . . . 8/imm32 # add to ESP @@ -384,86 +384,86 @@ test-get-num-reads-single-digit: c3/return test-get-num-aborts-on-non-digit-in-Look: - ## check that get-num returns first character if it's a 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 all streams # clear-stream(_test-stream) - # push args + # . push args 68/push _test-stream/imm32 - # call + # . call e8/call clear-stream/disp32 - # discard args + # . discard args 81 0/subop/add 3/mod/direct 4/rm32/ESP . . . . . 4/imm32 # add to ESP # clear-stream(_test-buffered-file+4) - # push args + # . push args b8/copy-to-EAX _test-buffered-file/imm32 05/add-to-EAX 4/imm32 50/push-EAX - # call + # . call e8/call clear-stream/disp32 - # discard args + # . discard args 81 0/subop/add 3/mod/direct 4/rm32/ESP . . . . . 4/imm32 # add to ESP # clear-stream(_test-output-stream) - # push args + # . push args 68/push _test-output-stream/imm32 - # call + # . call e8/call clear-stream/disp32 - # discard args + # . discard args 81 0/subop/add 3/mod/direct 4/rm32/ESP . . . . . 4/imm32 # add to ESP # clear-stream(_test-error-stream) - # push args + # . push args 68/push _test-error-stream/imm32 - # call + # . call e8/call clear-stream/disp32 - # discard args + # . discard args 81 0/subop/add 3/mod/direct 4/rm32/ESP . . . . . 4/imm32 # add to ESP - ## initialize 'in' + # - initialize 'in' # write(_test-stream, "3") - # push args + # . push args 68/push "3"/imm32 68/push _test-stream/imm32 - # call + # . call e8/call write/disp32 - # discard args + # . discard args 81 0/subop/add 3/mod/direct 4/rm32/ESP . . . . . 8/imm32 # add to ESP - ## initialize exit-descriptor 'ed' + # - 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 + # . push args 68/push 0x10/imm32/nbytes-of-args-for-get-num 50/push-EAX/ed - # call + # . call e8/call tailor-exit-descriptor/disp32 - # discard args + # . 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) - # push args + # - 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 - # call + # . call e8/call get-num/disp32 - ## registers except ESP may be clobbered at this point - # discard args + # 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 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 + # . push args 68/push "F - test-get-num-aborts-on-non-digit-in-Look"/imm32 68/push 2/imm32 - # push ed->value + # . push ed->value ff 6/subop/push 1/mod/*+disp8 0/rm32/EAX . . . . 4/disp8 . # push *(EAX+4) - # 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 # reclaim locals 81 0/subop/add 3/mod/direct 4/rm32/ESP . . . . . 8/imm32 # add to ESP @@ -478,42 +478,42 @@ expected: # ed : (address exit-descriptor), f : fd or (address stream), s : (ad 55/push-EBP 89/copy 3/mod/direct 5/rm32/EBP . . . 4/r32/ESP . . # copy ESP to EBP # write(f, "Error: ") - # push args + # . 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) - # call + # . call e8/call write/disp32 - # discard args + # . discard args 81 0/subop/add 3/mod/direct 4/rm32/ESP . . . . . 8/imm32 # add to ESP # write(f, s) - # push args + # . 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) - # call + # . call e8/call write/disp32 - # discard args + # . discard args 81 0/subop/add 3/mod/direct 4/rm32/ESP . . . . . 8/imm32 # add to ESP # write(f, " expected") - # push args + # . 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) - # call + # . call e8/call write/disp32 - # discard args + # . discard args 81 0/subop/add 3/mod/direct 4/rm32/ESP . . . . . 8/imm32 # add to ESP # write(f, Newline) - # push args + # . 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) - # call + # . call e8/call write/disp32 - # discard args + # . discard args 81 0/subop/add 3/mod/direct 4/rm32/ESP . . . . . 8/imm32 # add to ESP # stop(ed, 1) - # push args + # . 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) - # call + # . call e8/call stop/disp32 ## should never get past this point # epilog @@ -527,34 +527,34 @@ error: # ed : (address exit-descriptor), f : fd or (address stream), s : (addre 55/push-EBP 89/copy 3/mod/direct 5/rm32/EBP . . . 4/r32/ESP . . # copy ESP to EBP # write(f, "Error: ") - # push args + # . 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) - # call + # . call e8/call write/disp32 - # discard args + # . discard args 81 0/subop/add 3/mod/direct 4/rm32/ESP . . . . . 8/imm32 # add to ESP # write(f, s) - # push args + # . 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) - # call + # . call e8/call write/disp32 - # discard args + # . discard args 81 0/subop/add 3/mod/direct 4/rm32/ESP . . . . . 8/imm32 # add to ESP # write(f, Newline) - # push args + # . 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) - # call + # . call e8/call write/disp32 - # discard args + # . discard args 81 0/subop/add 3/mod/direct 4/rm32/ESP . . . . . 8/imm32 # add to ESP # stop(ed, 1) - # push args + # . 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) - # call + # . call e8/call stop/disp32 ## should never get past this point # epilog @@ -570,11 +570,11 @@ get-char: # f : (address buffered-file) -> <void> # save registers 50/push-EAX # read-byte(f) - # push args + # . push args ff 6/subop/push 1/mod/*+disp8 4/rm32/sib 5/base/EBP 4/index/none . . 0x8/disp8 . # push *(EBP+8) - # call + # . call e8/call read-byte/disp32 - # discard args + # . 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 |