diff options
| -rw-r--r-- | subx/apps/dquotes | bin | 22553 -> 23219 bytes | |||
| -rw-r--r-- | subx/apps/dquotes.subx | 139 |
2 files changed, 138 insertions, 1 deletions
diff --git a/subx/apps/dquotes b/subx/apps/dquotes index 83fac224..a91f829d 100644 --- a/subx/apps/dquotes +++ b/subx/apps/dquotes Binary files differdiff --git a/subx/apps/dquotes.subx b/subx/apps/dquotes.subx index 749fc6aa..514c2d06 100644 --- a/subx/apps/dquotes.subx +++ b/subx/apps/dquotes.subx @@ -807,13 +807,136 @@ test-convert-processes-string-literals: # generate the data segment contents byte by byte for a given slice emit-string-literal-data: # out : (address stream), word : (address slice) + # pseudocode + # curr = word->start + # ++curr # skip '"' + # while true + # if (curr >= word->end) break + # c = *curr + # if (c == '"') break + # append-byte-hex(out, c) + # if c is alphanumeric: + # write(out, "/") + # append-byte(out, c) + # write(out, " ") + # ++curr + # # . 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 + 52/push-EDX + 56/push-ESI + # ESI = word + 8b/copy 1/mod/*+disp8 5/rm32/EBP . . . 6/r32/ESI 0xc/disp8 . # copy *(EBP+12) to ESI + # curr/EDX = word->start + 8b/copy 0/mod/indirect 6/rm32/ESI . . . 2/r32/EDX . . # copy *ESI to EDX + # ++curr # skip initial '"' + 42/increment-EDX + # max/ESI = word->end + 8b/copy 1/mod/*+disp8 6/rm32/ESI . . . 6/r32/ESI 4/disp8 . # copy *(ESI+4) to ESI + # ECX = 0 + 31/xor 3/mod/direct 1/rm32/ECX . . . 1/r32/ECX . . # clear ECX +$emit-string-literal-data:loop: + # if (curr >= max) break + 39/compare 3/mod/direct 2/rm32/EDX . . . 6/r32/ESI . . # compare EDX with ESI + 7d/jump-if-greater-or-equal $emit-string-literal-data:end/disp8 + # CL = *curr + 8a/copy-byte 0/mod/indirect 2/rm32/EDX . . . 1/r32/CL . . # copy byte at *EDX to CL + # if (ECX == '"') break + 81 7/subop/compare 3/mod/direct 1/rm32/ECX . . . . . 0x22/imm32/dquote # compare ECX + 74/jump-if-equal $emit-string-literal-data:end/disp8 + # append-byte-hex(out, CL) + # . . push args + 51/push-ECX + ff 6/subop/push 1/mod/*+disp8 5/rm32/EBP . . . . 8/disp8 . # push *(EBP+8) + # . . call + e8/call append-byte-hex/disp32 + # . . discard args + 81 0/subop/add 3/mod/direct 4/rm32/ESP . . . . . 8/imm32 # add to ESP + # if (is-alphanumeric?(*curr)) print(out, "/#{*curr}") + # . EAX = is-alphanumeric?(CL) + # . . push args + 51/push-ECX + # . . call + e8/call is-alphanumeric?/disp32 + # . . discard args + 81 0/subop/add 3/mod/direct 4/rm32/ESP . . . . . 4/imm32 # add to ESP + # . if (EAX == 0) goto char-done + 3d/compare-EAX-and 0/imm32 + 74/jump-if-equal $emit-string-literal-data:char-done/disp8 + # . write(out, "/") + # . . push args + 68/push Slash/imm32 + ff 6/subop/push 1/mod/*+disp8 5/rm32/EBP . . . . 8/disp8 . # push *(EBP+8) + # . . call + e8/call write/disp32 + # . . discard args + 81 0/subop/add 3/mod/direct 4/rm32/ESP . . . . . 8/imm32 # add to ESP + # . append-byte(out, *curr) + # . . push args + 51/push-ECX + ff 6/subop/push 1/mod/*+disp8 5/rm32/EBP . . . . 8/disp8 . # push *(EBP+8) + # . . call + e8/call append-byte/disp32 + # . . discard args + 81 0/subop/add 3/mod/direct 4/rm32/ESP . . . . . 8/imm32 # add to ESP +$emit-string-literal-data:char-done: + # write(out, " ") + # . . push args + 68/push Space/imm32 + ff 6/subop/push 1/mod/*+disp8 5/rm32/EBP . . . . 8/disp8 . # push *(EBP+8) + # . . call + e8/call write/disp32 + # . . discard args + 81 0/subop/add 3/mod/direct 4/rm32/ESP . . . . . 8/imm32 # add to ESP + # ++curr + 42/increment-EDX + eb/jump $emit-string-literal-data:loop/disp8 $emit-string-literal-data:end: - # . reclaim locals # . restore registers + 5e/pop-to-ESI + 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 + +is-alphanumeric?: # c : int -> EAX : boolean + # . prolog + 55/push-EBP + 89/copy 3/mod/direct 5/rm32/EBP . . . 4/r32/ESP . . # copy ESP to EBP + # EAX = c + 8b/copy 1/mod/*+disp8 5/rm32/EBP . . . 0/r32/EAX 8/disp8 . # copy *(EBP+8) to EAX + # if (EAX < '0') return false + 3d/compare-EAX-with 0x30/imm32/0 + 7c/jump-if-lesser $is-alphanumeric?:false/disp8 + # if (EAX <= '9') return true + 3d/compare-EAX-with 0x39/imm32/9 + 7e/jump-if-lesser-or-equal $is-alphanumeric?:true/disp8 + # if (EAX < 'A') return false + 3d/compare-EAX-with 0x41/imm32/A + 7c/jump-if-lesser $is-alphanumeric?:false/disp8 + # if (EAX <= 'Z') return true + 3d/compare-EAX-with 0x5a/imm32/Z + 7e/jump-if-lesser-or-equal $is-alphanumeric?:true/disp8 + # if (EAX < 'a') return false + 3d/compare-EAX-with 0x61/imm32/a + 7c/jump-if-lesser $is-alphanumeric?:false/disp8 + # if (EAX <= 'z') return true + 3d/compare-EAX-with 0x7a/imm32/z + 7e/jump-if-lesser-or-equal $is-alphanumeric?:true/disp8 + # return false +$is-alphanumeric?:false: + b8/copy-to-EAX 0/imm32/false + eb/jump $is-alphanumeric?:end/disp8 +$is-alphanumeric?:true: + b8/copy-to-EAX 1/imm32/true +$is-alphanumeric?:end: # . epilog 89/copy 3/mod/direct 4/rm32/ESP . . . 5/r32/EBP . . # copy EBP to ESP 5d/pop-to-EBP @@ -1569,6 +1692,20 @@ Segment-size: Next-string-literal: # tracks the next auto-generated variable name 1/imm32 +# length-prefixed string containing just a single space +Space: + # size + 1/imm32 + # data + 20/space + +# length-prefixed string containing just a single slash +Slash: + # size + 1/imm32 + # data + 2f/slash + _test-slice-abc: 22/dquote 61/a 62/b 63/c 22/dquote # "abc" _test-slice-abc-end: |