diff options
Diffstat (limited to 'apps/crenshaw2-1.subx')
| -rw-r--r-- | apps/crenshaw2-1.subx | 18 |
1 files changed, 9 insertions, 9 deletions
diff --git a/apps/crenshaw2-1.subx b/apps/crenshaw2-1.subx index e8ff7101..3273811d 100644 --- a/apps/crenshaw2-1.subx +++ b/apps/crenshaw2-1.subx @@ -67,7 +67,7 @@ Entry: # run tests if necessary, call 'compile' if not eb/jump $main:end/disp8 $run-main: # - otherwise read a program from stdin and emit its translation to stdout - # var ed/eax : exit-descriptor + # var ed/eax: exit-descriptor 81 5/subop/subtract 3/mod/direct 4/rm32/esp . . . . . 8/imm32 # subtract from esp 89/copy 3/mod/direct 0/rm32/eax . . . 4/r32/esp . . # copy esp to eax # configure ed to really exit() @@ -90,7 +90,7 @@ $main:end: cd/syscall 0x80/imm8 # the main entry point -compile: # in : (addr buffered-file), out : fd or (addr stream byte), err : fd or (addr stream byte), ed : (addr exit-descriptor) +compile: # in: (addr buffered-file), out: fd or (addr stream byte), err: fd or (addr stream byte), ed: (addr exit-descriptor) # . prologue 55/push-ebp 89/copy 3/mod/direct 5/rm32/ebp . . . 4/r32/esp . . # copy esp to ebp @@ -105,7 +105,7 @@ compile: # in : (addr buffered-file), out : fd or (addr stream byte), err : fd 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 : (stream byte 7) + # var num/ecx: (stream byte 7) # Numbers can be 32 bits or 8 hex bytes long. One of them will be in 'Look', so we need space for 7 bytes. # Sizing the stream just right buys us overflow-handling for free inside 'get-num'. # Add 12 bytes for 'read', 'write' and 'length' fields, for a total of 19 bytes, or 0x13 in hex. @@ -191,7 +191,7 @@ $compile:end: # space in 'out'. # Input comes from the global variable 'Look' (first byte) and the argument # 'in' (rest). We leave the next byte from 'in' into 'Look' on exit. -get-num: # in : (addr buffered-file), out : (addr stream byte), err : fd or (addr stream byte), ed : (addr exit-descriptor) +get-num: # in: (addr buffered-file), out: (addr stream byte), err: fd or (addr stream byte), ed: (addr exit-descriptor) # pseudocode: # if (!is-digit?(Look)) expected(ed, err, "integer") # if out->write >= out->length @@ -339,7 +339,7 @@ test-get-num-reads-single-digit: # . . discard args 81 0/subop/add 3/mod/direct 4/rm32/esp . . . . . 8/imm32 # add to esp # initialize exit-descriptor 'ed' for the call to 'get-num' below - # . var ed/eax : exit-descriptor + # . var ed/eax: exit-descriptor 81 5/subop/subtract 3/mod/direct 4/rm32/esp . . . . . 8/imm32 # subtract from esp 89/copy 3/mod/direct 0/rm32/eax . . . 4/r32/esp . . # copy esp to eax # . tailor-exit-descriptor(ed, 16) @@ -428,7 +428,7 @@ test-get-num-aborts-on-non-digit-in-Look: # . . discard args 81 0/subop/add 3/mod/direct 4/rm32/esp . . . . . 8/imm32 # add to esp # initialize exit-descriptor 'ed' for the call to 'get-num' below - # . var ed/eax : exit-descriptor + # . var ed/eax: exit-descriptor 81 5/subop/subtract 3/mod/direct 4/rm32/esp . . . . . 8/imm32 # subtract from esp 89/copy 3/mod/direct 0/rm32/eax . . . 4/r32/esp . . # copy esp to eax # . tailor-exit-descriptor(ed, 16) @@ -470,7 +470,7 @@ test-get-num-aborts-on-non-digit-in-Look: ## helpers # write(f, "Error: "+s+" expected\n") then stop(ed, 1) -expected: # ed : (addr exit-descriptor), f : fd or (addr stream byte), s : (addr array byte) +expected: # ed: (addr exit-descriptor), f: fd or (addr stream byte), s: (addr array byte) # . prologue 55/push-ebp 89/copy 3/mod/direct 5/rm32/ebp . . . 4/r32/esp . . # copy esp to ebp @@ -512,7 +512,7 @@ $expected:dead-end: c3/return # read a byte from 'f', and save it in 'Look' -get-char: # f : (addr buffered-file) +get-char: # f: (addr buffered-file) # . prologue 55/push-ebp 89/copy 3/mod/direct 5/rm32/ebp . . . 4/r32/esp . . # copy esp to ebp @@ -535,7 +535,7 @@ $get-char:end: 5d/pop-to-ebp c3/return -is-digit?: # c : int -> eax : boolean +is-digit?: # c: int -> eax: boolean # . prologue 55/push-ebp 89/copy 3/mod/direct 5/rm32/ebp . . . 4/r32/esp . . # copy esp to ebp |