Mu - subx/067print-int.subx

From 52daf0722f7f4ad9d3f29e3cbbbaddde066f49f3 Mon Sep 17 00:00:00 2001 From: Kartik Agaram Date: Mon, 20 May 2019 01:44:06 -0700 Subject: 5211 Update syntax-highlighted renderings after a _long_ time. --- html/subx/067print-int.subx.html | 433 +++++++++++++++++++++++++++++++++++++++ 1 file changed, 433 insertions(+) create mode 100644 html/subx/067print-int.subx.html (limited to 'html/subx/067print-int.subx.html') diff --git a/html/subx/067print-int.subx.html b/html/subx/067print-int.subx.html new file mode 100644 index 00000000..3f9ddcf5 --- /dev/null +++ b/html/subx/067print-int.subx.html @@ -0,0 +1,433 @@ + + + + +Mu - subx/067print-int.subx + + + + + + + + + + +https://github.com/akkartik/mu/blob/master/subx/067print-int.subx +
+  1 # Print the (hex) textual representation of numbers.
+  2 
+  3 == code
+  4 #   instruction                     effective address                                                   register    displacement    immediate
+  5 # . op          subop               mod             rm32          base        index         scale       r32
+  6 # . 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
+  7 
+  8 #? Entry:  # run a single test, while debugging
+  9 #?     e8/call test-print-int32/disp32
+ 10 #?     # syscall(exit, Num-test-failures)
+ 11 #?     8b/copy                         0/mod/indirect  5/rm32/.disp32            .             .           3/r32/EBX   Num-test-failures/disp32          # copy *Num-test-failures to EBX
+ 12 #?     b8/copy-to-EAX  1/imm32/exit
+ 13 #?     cd/syscall  0x80/imm8
+ 14 
+ 15 append-byte-hex:  # f : (address stream), n : int -> <void>
+ 16     # . prolog
+ 17     55/push-EBP
+ 18     89/copy                         3/mod/direct    5/rm32/EBP    .           .             .           4/r32/ESP   .               .                 # copy ESP to EBP
+ 19     # . save registers
+ 20     50/push-EAX
+ 21     # AL = convert upper nibble to hex
+ 22     8b/copy                         1/mod/*+disp8   5/rm32/EBP    .           .             .           0/r32/EAX   0xc/disp8       .                 # copy *(EBP+12) to EAX
+ 23     c1/shift    5/subop/logic-right 3/mod/direct    0/rm32/EAX    .           .             .           .           .               4/imm8            # shift EAX right by 4 bits, while padding zeroes
+ 24     25/and-EAX  0xf/imm32
+ 25     # . AL = to-hex-char(AL)
+ 26     e8/call  to-hex-char/disp32
+ 27     # append-byte(f, AL)
+ 28     # . . push args
+ 29     50/push-EAX
+ 30     ff          6/subop/push        1/mod/*+disp8   5/rm32/EBP    .           .             .           .           8/disp8         .                 # push *(EBP+8)
+ 31     # . . call
+ 32     e8/call  append-byte/disp32
+ 33     # . . discard args
+ 34     81          0/subop/add         3/mod/direct    4/rm32/ESP    .           .             .           .           .               8/imm32           # add to ESP
+ 35     # AL = convert lower nibble to hex
+ 36     8b/copy                         1/mod/*+disp8   5/rm32/EBP    .           .             .           0/r32/EAX   0xc/disp8       .                 # copy *(EBP+12) to EAX
+ 37     25/and-EAX  0xf/imm32
+ 38     # . AL = to-hex-char(AL)
+ 39     e8/call  to-hex-char/disp32
+ 40     # append-byte(f, AL)
+ 41     # . . push args
+ 42     50/push-EAX
+ 43     ff          6/subop/push        1/mod/*+disp8   5/rm32/EBP    .           .             .           .           8/disp8         .                 # push *(EBP+8)
+ 44     # . . call
+ 45     e8/call  append-byte/disp32
+ 46     # . . discard args
+ 47     81          0/subop/add         3/mod/direct    4/rm32/ESP    .           .             .           .           .               8/imm32           # add to ESP
+ 48 $append-byte-hex:end:
+ 49     # . restore registers
+ 50     58/pop-to-EAX
+ 51     # . epilog
+ 52     89/copy                         3/mod/direct    4/rm32/ESP    .           .             .           5/r32/EBP   .               .                 # copy EBP to ESP
+ 53     5d/pop-to-EBP
+ 54     c3/return
+ 55 
+ 56 test-append-byte-hex:
+ 57     # - check that append-byte-hex adds the hex textual representation
+ 58     # setup
+ 59     # . clear-stream(_test-stream)
+ 60     # . . push args
+ 61     68/push  _test-stream/imm32
+ 62     # . . call
+ 63     e8/call  clear-stream/disp32
+ 64     # . . discard args
+ 65     81          0/subop/add         3/mod/direct    4/rm32/ESP    .           .             .           .           .               4/imm32           # add to ESP
+ 66     # append-byte-hex(_test-stream, 0xa)  # exercises digit, non-digit as well as leading zero
+ 67     # . . push args
+ 68     68/push  0xa/imm32
+ 69     68/push  _test-stream/imm32
+ 70     # . . call
+ 71     e8/call  append-byte-hex/disp32
+ 72     # . . discard args
+ 73     81          0/subop/add         3/mod/direct    4/rm32/ESP    .           .             .           .           .               8/imm32           # add to ESP
+ 74     # check-stream-equal(_test-stream, "0a", msg)
+ 75     # . . push args
+ 76     68/push  "F - test-append-byte-hex"/imm32
+ 77     68/push  "0a"/imm32
+ 78     68/push  _test-stream/imm32
+ 79     # . . call
+ 80     e8/call  check-stream-equal/disp32
+ 81     # . . discard args
+ 82     81          0/subop/add         3/mod/direct    4/rm32/ESP    .           .             .           .           .               0xc/imm32         # add to ESP
+ 83     # . end
+ 84     c3/return
+ 85 
+ 86 # print the hex representation for the lowest byte of a number
+ 87 print-byte-buffered:  # f : (address buffered-file), n : int -> <void>
+ 88     # . prolog
+ 89     55/push-EBP
+ 90     89/copy                         3/mod/direct    5/rm32/EBP    .           .             .           4/r32/ESP   .               .                 # copy ESP to EBP
+ 91     # . save registers
+ 92     50/push-EAX
+ 93     # AL = convert upper nibble to hex
+ 94     8b/copy                         1/mod/*+disp8   5/rm32/EBP    .           .             .           0/r32/EAX   0xc/disp8       .                 # copy *(EBP+12) to EAX
+ 95     c1/shift    5/subop/logic-right 3/mod/direct    0/rm32/EAX    .           .             .           .           .               4/imm8            # shift EAX right by 4 bits, while padding zeroes
+ 96     25/and-EAX  0xf/imm32
+ 97     # . AL = to-hex-char(AL)
+ 98     e8/call  to-hex-char/disp32
+ 99     # write-byte-buffered(f, AL)
+100     # . . push args
+101     50/push-EAX
+102     ff          6/subop/push        1/mod/*+disp8   5/rm32/EBP    .           .             .           .           8/disp8         .                 # push *(EBP+8)
+103     # . . call
+104     e8/call  write-byte-buffered/disp32
+105     # . . discard args
+106     81          0/subop/add         3/mod/direct    4/rm32/ESP    .           .             .           .           .               8/imm32           # add to ESP
+107     # AL = convert lower nibble to hex
+108     8b/copy                         1/mod/*+disp8   5/rm32/EBP    .           .             .           0/r32/EAX   0xc/disp8       .                 # copy *(EBP+12) to EAX
+109     25/and-EAX  0xf/imm32
+110     # . AL = to-hex-char(AL)
+111     e8/call  to-hex-char/disp32
+112     # write-byte-buffered(f, AL)
+113     # . . push args
+114     50/push-EAX
+115     ff          6/subop/push        1/mod/*+disp8   5/rm32/EBP    .           .             .           .           8/disp8         .                 # push *(EBP+8)
+116     # . . call
+117     e8/call  write-byte-buffered/disp32
+118     # . . discard args
+119     81          0/subop/add         3/mod/direct    4/rm32/ESP    .           .             .           .           .               8/imm32           # add to ESP
+120 $print-byte-buffered:end:
+121     # . restore registers
+122     58/pop-to-EAX
+123     # . epilog
+124     89/copy                         3/mod/direct    4/rm32/ESP    .           .             .           5/r32/EBP   .               .                 # copy EBP to ESP
+125     5d/pop-to-EBP
+126     c3/return
+127 
+128 test-print-byte-buffered:
+129     # - check that print-byte-buffered prints the hex textual representation
+130     # setup
+131     # . clear-stream(_test-stream)
+132     # . . push args
+133     68/push  _test-stream/imm32
+134     # . . call
+135     e8/call  clear-stream/disp32
+136     # . . discard args
+137     81          0/subop/add         3/mod/direct    4/rm32/ESP    .           .             .           .           .               4/imm32           # add to ESP
+138     # . clear-stream(_test-buffered-file+4)
+139     # . . push args
+140     b8/copy-to-EAX  _test-buffered-file/imm32
+141     05/add-to-EAX  4/imm32
+142     50/push-EAX
+143     # . . call
+144     e8/call  clear-stream/disp32
+145     # . . discard args
+146     81          0/subop/add         3/mod/direct    4/rm32/ESP    .           .             .           .           .               4/imm32           # add to ESP
+147     # print-byte-buffered(_test-buffered-file, 0xa)  # exercises digit, non-digit as well as leading zero
+148     # . . push args
+149     68/push  0xa/imm32
+150     68/push  _test-buffered-file/imm32
+151     # . . call
+152     e8/call  print-byte-buffered/disp32
+153     # . . discard args
+154     81          0/subop/add         3/mod/direct    4/rm32/ESP    .           .             .           .           .               8/imm32           # add to ESP
+155     # flush(_test-buffered-file)
+156     # . . push args
+157     68/push  _test-buffered-file/imm32
+158     # . . call
+159     e8/call  flush/disp32
+160     # . . discard args
+161     81          0/subop/add         3/mod/direct    4/rm32/ESP    .           .             .           .           .               4/imm32           # add to ESP
+162     # check-stream-equal(_test-stream, "0a", msg)
+163     # . . push args
+164     68/push  "F - test-print-byte-buffered"/imm32
+165     68/push  "0a"/imm32
+166     68/push  _test-stream/imm32
+167     # . . call
+168     e8/call  check-stream-equal/disp32
+169     # . . discard args
+170     81          0/subop/add         3/mod/direct    4/rm32/ESP    .           .             .           .           .               0xc/imm32         # add to ESP
+171     # . end
+172     c3/return
+173 
+174 print-int32:  # f : (address stream), n : int -> <void>
+175     # pseudocode:
+176     #  write(f, "0x")
+177     #  ECX = 28
+178     #  while true
+179     #    if (ECX < 0) break
+180     #    EAX = n >> ECX
+181     #    EAX = EAX & 0xf
+182     #    append-byte(f, AL)
+183     #    ECX -= 4
+184     #
+185     # . prolog
+186     55/push-EBP
+187     89/copy                         3/mod/direct    5/rm32/EBP    .           .             .           4/r32/ESP   .               .                 # copy ESP to EBP
+188     # . save registers
+189     50/push-EAX
+190     51/push-ECX
+191     # ECX = 28
+192     b9/copy-to-ECX  0x1c/imm32
+193 $print-int32:print-hex-prefix:
+194     # write(f, "0x")
+195     # . . push args
+196     68/push  "0x"/imm32
+197     ff          6/subop/push        1/mod/*+disp8   5/rm32/EBP    .           .             .           .           8/disp8         .                 # push *(EBP+8)
+198     # . . call
+199     e8/call  write/disp32
+200     # . . discard args
+201     81          0/subop/add         3/mod/direct    4/rm32/ESP    .           .             .           .           .               8/imm32           # add to ESP
+202 $print-int32:loop:
+203     # if (ECX < 0) break
+204     81          7/subop/compare     3/mod/direct    1/rm32/ECX    .           .             .           .           .               0/imm32           # compare ECX
+205     7c/jump-if-lesser  $print-int32:end/disp8
+206     # EAX = n >> ECX
+207     8b/copy                         1/mod/*+disp8   5/rm32/EBP    .           .             .           0/r32/EAX   0xc/disp8       .                 # copy *(EBP+12) to EAX
+208     d3/>>ECX    5/subop/pad-zeroes  3/mod/direct    0/rm32/EAX    .           .             .           .           .               .                 # shift EAX right by ECX bits, padding zeroes
+209     # EAX = to-hex-char(AL)
+210     25/and-EAX  0xf/imm32
+211     e8/call  to-hex-char/disp32
+212     # append-byte(f, AL)
+213     # . . push args
+214     50/push-EAX
+215     ff          6/subop/push        1/mod/*+disp8   5/rm32/EBP    .           .             .           .           8/disp8         .                 # push *(EBP+8)
+216     # . . call
+217     e8/call  append-byte/disp32
+218     # . . discard args
+219     81          0/subop/add         3/mod/direct    4/rm32/ESP    .           .             .           .           .               8/imm32           # add to ESP
+220     # ECX -= 4
+221     81          5/subop/subtract    3/mod/direct    1/rm32/ECX    .           .             .           .           .               4/imm32           # subtract from ECX
+222     eb/jump  $print-int32:loop/disp8
+223 $print-int32:end:
+224     # . restore registers
+225     59/pop-to-ECX
+226     58/pop-to-EAX
+227     # . epilog
+228     89/copy                         3/mod/direct    4/rm32/ESP    .           .             .           5/r32/EBP   .               .                 # copy EBP to ESP
+229     5d/pop-to-EBP
+230     c3/return
+231 
+232 test-print-int32:
+233     # - check that print-int32 prints the hex textual representation
+234     # setup
+235     # . clear-stream(_test-stream)
+236     # . . push args
+237     68/push  _test-stream/imm32
+238     # . . call
+239     e8/call  clear-stream/disp32
+240     # . . discard args
+241     81          0/subop/add         3/mod/direct    4/rm32/ESP    .           .             .           .           .               4/imm32           # add to ESP
+242     # print-int32(_test-stream, 0x8899aa)
+243     # . . push args
+244     68/push  0x8899aa/imm32
+245     68/push  _test-stream/imm32
+246     # . . call
+247     e8/call  print-int32/disp32
+248     # . . discard args
+249     81          0/subop/add         3/mod/direct    4/rm32/ESP    .           .             .           .           .               8/imm32           # add to ESP
+250     # check-stream-equal(_test-stream, "0x008899aa", msg)
+251     # . . push args
+252     68/push  "F - test-print-int32"/imm32
+253     68/push  "0x008899aa"/imm32
+254     68/push  _test-stream/imm32
+255     # . . call
+256     e8/call  check-stream-equal/disp32
+257     # . . discard args
+258     81          0/subop/add         3/mod/direct    4/rm32/ESP    .           .             .           .           .               0xc/imm32         # add to ESP
+259     # . end
+260     c3/return
+261 
+262 print-int32-buffered:  # f : (address buffered-file), n : int -> <void>
+263     # pseudocode:
+264     #  write-buffered(f, "0x")
+265     #  ECX = 28
+266     #  while true
+267     #    if (ECX < 0) break
+268     #    EAX = n >> ECX
+269     #    EAX = EAX & 0xf
+270     #    write-byte-buffered(f, AL)
+271     #    ECX -= 4
+272     #
+273     # . prolog
+274     55/push-EBP
+275     89/copy                         3/mod/direct    5/rm32/EBP    .           .             .           4/r32/ESP   .               .                 # copy ESP to EBP
+276     # . save registers
+277     50/push-EAX
+278     51/push-ECX
+279     # ECX = 28
+280     b9/copy-to-ECX  0x1c/imm32
+281 $print-int32-buffered:print-hex-prefix:
+282     # write-buffered(f, "0x")
+283     # . . push args
+284     68/push  "0x"/imm32
+285     ff          6/subop/push        1/mod/*+disp8   5/rm32/EBP    .           .             .           .           8/disp8         .                 # push *(EBP+8)
+286     # . . call
+287     e8/call  write-buffered/disp32
+288     # . . discard args
+289     81          0/subop/add         3/mod/direct    4/rm32/ESP    .           .             .           .           .               8/imm32           # add to ESP
+290 $print-int32-buffered:loop:
+291     # if (ECX < 0) break
+292     81          7/subop/compare     3/mod/direct    1/rm32/ECX    .           .             .           .           .               0/imm32           # compare ECX
+293     7c/jump-if-lesser  $print-int32-buffered:end/disp8
+294     # EAX = n >> ECX
+295     8b/copy                         1/mod/*+disp8   5/rm32/EBP    .           .             .           0/r32/EAX   0xc/disp8       .                 # copy *(EBP+12) to EAX
+296     d3/>>ECX    5/subop/pad-zeroes  3/mod/direct    0/rm32/EAX    .           .             .           .           .               .                 # shift EAX right by ECX bits, padding zeroes
+297     # EAX = to-hex-char(AL)
+298     25/and-EAX  0xf/imm32
+299     e8/call  to-hex-char/disp32
+300     # write-byte-buffered(f, AL)
+301     # . . push args
+302     50/push-EAX
+303     ff          6/subop/push        1/mod/*+disp8   5/rm32/EBP    .           .             .           .           8/disp8         .                 # push *(EBP+8)
+304     # . . call
+305     e8/call  write-byte-buffered/disp32
+306     # . . discard args
+307     81          0/subop/add         3/mod/direct    4/rm32/ESP    .           .             .           .           .               8/imm32           # add to ESP
+308     # ECX -= 4
+309     81          5/subop/subtract    3/mod/direct    1/rm32/ECX    .           .             .           .           .               4/imm32           # subtract from ECX
+310     eb/jump  $print-int32-buffered:loop/disp8
+311 $print-int32-buffered:end:
+312     # . restore registers
+313     59/pop-to-ECX
+314     58/pop-to-EAX
+315     # . epilog
+316     89/copy                         3/mod/direct    4/rm32/ESP    .           .             .           5/r32/EBP   .               .                 # copy EBP to ESP
+317     5d/pop-to-EBP
+318     c3/return
+319 
+320 test-print-int32-buffered:
+321     # - check that print-int32-buffered prints the hex textual representation
+322     # setup
+323     # . clear-stream(_test-stream)
+324     # . . push args
+325     68/push  _test-stream/imm32
+326     # . . call
+327     e8/call  clear-stream/disp32
+328     # . . discard args
+329     81          0/subop/add         3/mod/direct    4/rm32/ESP    .           .             .           .           .               4/imm32           # add to ESP
+330     # . clear-stream(_test-buffered-file+4)
+331     # . . push args
+332     b8/copy-to-EAX  _test-buffered-file/imm32
+333     05/add-to-EAX  4/imm32
+334     50/push-EAX
+335     # . . call
+336     e8/call  clear-stream/disp32
+337     # . . discard args
+338     81          0/subop/add         3/mod/direct    4/rm32/ESP    .           .             .           .           .               4/imm32           # add to ESP
+339     # print-int32-buffered(_test-buffered-file, 0x8899aa)
+340     # . . push args
+341     68/push  0x8899aa/imm32
+342     68/push  _test-buffered-file/imm32
+343     # . . call
+344     e8/call  print-int32-buffered/disp32
+345     # . . discard args
+346     81          0/subop/add         3/mod/direct    4/rm32/ESP    .           .             .           .           .               8/imm32           # add to ESP
+347     # flush(_test-buffered-file)
+348     # . . push args
+349     68/push  _test-buffered-file/imm32
+350     # . . call
+351     e8/call  flush/disp32
+352     # . . discard args
+353     81          0/subop/add         3/mod/direct    4/rm32/ESP    .           .             .           .           .               4/imm32           # add to ESP
+354 +-- 18 lines: #?     # dump line -----------------------------------------------------------------------------------------------------------------------------
+372     # check-stream-equal(_test-stream, "0x008899aa", msg)
+373     # . . push args
+374     68/push  "F - test-print-int32-buffered"/imm32
+375     68/push  "0x008899aa"/imm32
+376     68/push  _test-stream/imm32
+377     # . . call
+378     e8/call  check-stream-equal/disp32
+379     # . . discard args
+380     81          0/subop/add         3/mod/direct    4/rm32/ESP    .           .             .           .           .               0xc/imm32         # add to ESP
+381     # . end
+382     c3/return
+383 
+384 # . . vim:nowrap:textwidth=0
+
+ + + -- cgit 1.4.1-2-gfad0