diff options
Diffstat (limited to 'linux/tests.subx')
| -rw-r--r-- | linux/tests.subx | 312 |
1 files changed, 312 insertions, 0 deletions
diff --git a/linux/tests.subx b/linux/tests.subx new file mode 100644 index 00000000..eb8eb937 --- /dev/null +++ b/linux/tests.subx @@ -0,0 +1,312 @@ +# Generate code for a new function called 'run-tests' which calls in sequence +# all functions starting with 'test-'. +# +# To build: +# $ ./bootstrap translate init.linux [01]*.subx apps/subx-params.subx apps/tests.subx -o apps/tests + +== code +# instruction effective address register 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 + +Entry: # run tests if necessary, convert stdin if not + # . prologue + 89/copy 3/mod/direct 5/rm32/ebp . . . 4/r32/esp . . # copy esp to ebp + + # initialize heap + # . Heap = new-segment(Heap-size) + # . . push args + 68/push Heap/imm32 + ff 6/subop/push 0/mod/indirect 5/rm32/.disp32 . . . Heap-size/disp32 # push *Heap-size + # . . call + e8/call new-segment/disp32 + # . . discard args + 81 0/subop/add 3/mod/direct 4/rm32/esp . . . . . 8/imm32 # add to esp + # initialize-trace-stream(256KB) + # . . push args + 68/push 0x40000/imm32/256KB + # . . call + e8/call initialize-trace-stream/disp32 + # . . discard args + 81 0/subop/add 3/mod/direct 4/rm32/esp . . . . . 4/imm32 # add to esp + + # - if argc > 1 and argv[1] == "test", then return run_tests() + # if (argc <= 1) goto run-main + 81 7/subop/compare 1/mod/*+disp8 5/rm32/ebp . . . . 0/disp8 1/imm32 # compare *ebp + 7e/jump-if-<= $subx-tests-main:interactive/disp8 + # if (!kernel-string-equal?(argv[1], "test")) goto run-main + # . eax = kernel-string-equal?(argv[1], "test") + # . . push args + 68/push "test"/imm32 + ff 6/subop/push 1/mod/*+disp8 5/rm32/ebp . . . . 8/disp8 . # push *(ebp+8) + # . . call + e8/call kernel-string-equal?/disp32 + # . . discard args + 81 0/subop/add 3/mod/direct 4/rm32/esp . . . . . 8/imm32 # add to esp + # . if (eax == false) goto run-main + 3d/compare-eax-and 0/imm32/false + 74/jump-if-= $subx-tests-main:interactive/disp8 + # run-tests() + e8/call run-tests/disp32 + # syscall(exit, *Num-test-failures) + 8b/copy 0/mod/indirect 5/rm32/.disp32 . . 3/r32/ebx Num-test-failures/disp32 # copy *Num-test-failures to ebx + eb/jump $subx-tests-main:end/disp8 +$subx-tests-main:interactive: + # - otherwise convert stdin + # subx-gen-run-tests(Stdin, Stdout) + # . . push args + 68/push Stdout/imm32 + 68/push Stdin/imm32 + # . . call + e8/call subx-gen-run-tests/disp32 + # . . discard args + 81 0/subop/add 3/mod/direct 4/rm32/esp . . . . . 8/imm32 # add to esp + # syscall(exit, 0) + bb/copy-to-ebx 0/imm32 +$subx-tests-main:end: + e8/call syscall_exit/disp32 + +subx-gen-run-tests: # in: (addr buffered-file), out: (addr buffered-file) + # pseudocode + # boolean tests-found = false + # var line: (stream byte 512) + # var new-code-segment-handle: (handle stream byte) + # new-stream(Segment-size, 1, new-code-stream-handle) + # var new-code-segment: (addr stream byte) = lookup(new-code-stream-handle) + # write(new-code-segment, "\n== code\n") + # write(new-code-segment, "run-tests:\n") + # while true + # clear-stream(line) + # read-line-buffered(in, line) + # if (line->write == 0) break # end of file + # var word-slice = next-word(line) + # if slice-empty?(word-slice) # empty line + # continue + # if is-label?(word-slice) + # if slice-starts-with?(word-slice, "test-") + # tests-found = true + # write(new-code-segment, " e8/call ") + # write-slice(new-code-segment, word-slice) + # write(new-code-segment, "/disp32\n") + # rewind-stream(line) + # write-stream-data(out, line) + # if tests-found + # write(new-code-segment, " c3/return\n") + # write-stream-data(out, new-code-segment) + # flush(out) + # + # . prologue + 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 + 53/push-ebx + 56/push-esi + 57/push-edi + # var line/ecx: (stream byte 512) + 81 5/subop/subtract 3/mod/direct 4/rm32/esp . . . . . 0x200/imm32 # subtract from esp + 68/push 0x200/imm32/length + 68/push 0/imm32/read + 68/push 0/imm32/write + 89/copy 3/mod/direct 1/rm32/ecx . . . 4/r32/esp . . # copy esp to ecx + # var word-slice/edx: slice + 68/push 0/imm32/end + 68/push 0/imm32/start + 89/copy 3/mod/direct 2/rm32/edx . . . 4/r32/esp . . # copy esp to edx + # tests-found?/ebx = false + 31/xor 3/mod/direct 3/rm32/ebx . . . 3/r32/ebx . . # clear ebx + # var new-code-stream-handle/esi: (handle stream byte) + 68/push 0/imm32 + 68/push 0/imm32 + 89/copy 3/mod/direct 6/rm32/esi . . . 4/r32/esp . . # copy esp to esi + # new-stream(Heap, Segment-size, 1, new-code-stream-handle) + # . . push args + 56/push-esi + 68/push 1/imm32 + ff 6/subop/push 0/mod/indirect 5/rm32/.disp32 . . . Segment-size/disp32 # push *Segment-size + 68/push Heap/imm32 + # . . call + e8/call new-stream/disp32 + # . . discard args + 81 0/subop/add 3/mod/direct 4/rm32/esp . . . . . 0x10/imm32 # add to esp + # var new-code-stream/edi: (addr stream byte) = lookup(*new-code-stream-handle) + # . eax = lookup(*new-code-stream-handle) + # . . push args + ff 6/subop/push 1/mod/*+disp8 6/rm32/esi . . . . 4/disp8 . # push *(esi+4) + ff 6/subop/push 0/mod/indirect 6/rm32/esi . . . . . . # push *esi + # . . call + e8/call lookup/disp32 + # . . discard args + 81 0/subop/add 3/mod/direct 4/rm32/esp . . . . . 8/imm32 # add to esp + # . new-code-stream = eax + 89/copy 3/mod/direct 7/rm32/edi . . . 0/r32/eax . . # copy eax to edi + # write(new-code-segment, "\n== code\n") + # . . push args + 68/push "\n== code\n"/imm32 + 57/push-edi + # . . call + e8/call write/disp32 + # . . discard args + 81 0/subop/add 3/mod/direct 4/rm32/esp . . . . . 8/imm32 # add to esp + # write(new-code-segment, "run-tests:\n") + # . . push args + 68/push "run-tests:\n"/imm32 + 57/push-edi + # . . call + e8/call write/disp32 + # . . discard args + 81 0/subop/add 3/mod/direct 4/rm32/esp . . . . . 8/imm32 # add to esp +$subx-gen-run-tests:loop: + # clear-stream(line) + # . . push args + 51/push-ecx + # . . call + e8/call clear-stream/disp32 + # . . discard args + 81 0/subop/add 3/mod/direct 4/rm32/esp . . . . . 4/imm32 # add to esp + # read-line-buffered(in, line) + # . . push args + 51/push-ecx + ff 6/subop/push 1/mod/*+disp8 5/rm32/ebp . . . . 8/disp8 . # push *(ebp+8) + # . . call + e8/call read-line-buffered/disp32 + # . . discard args + 81 0/subop/add 3/mod/direct 4/rm32/esp . . . . . 8/imm32 # add to esp +$subx-gen-run-tests:check0: + # if (line->write == 0) break + 81 7/subop/compare 0/mod/indirect 1/rm32/ecx . . . . . 0/imm32 # compare *ecx + 0f 84/jump-if-= $subx-gen-run-tests:break/disp32 + # next-word(line, word-slice) + # . . push args + 52/push-edx + 51/push-ecx + # . . call + e8/call next-word/disp32 + # . . discard args + 81 0/subop/add 3/mod/direct 4/rm32/esp . . . . . 8/imm32 # add to esp +$subx-gen-run-tests:check-empty: + # if slice-empty?(word-slice) break + # . eax = slice-empty?(word-slice) + 52/push-edx + e8/call slice-empty?/disp32 + # . . discard args + 81 0/subop/add 3/mod/direct 4/rm32/esp . . . . . 4/imm32 # add to esp + # . if (eax != false) break + 3d/compare-eax-and 0/imm32/false + 75/jump-if-!= $subx-gen-run-tests:loop/disp8 +$subx-gen-run-tests:check-for-label: + # if (!is-label?(word-slice)) continue + # . eax = is-label?(word-slice) + # . . push args + 52/push-edx + # . . call + e8/call is-label?/disp32 + # . . discard args + 81 0/subop/add 3/mod/direct 4/rm32/esp . . . . . 4/imm32 # add to esp + # . if (eax == false) continue + 3d/compare-eax-and 0/imm32/false + 74/jump-if-= $subx-gen-run-tests:continue/disp8 +$subx-gen-run-tests:check-label-prefix: + # strip trailing ':' from word-slice + ff 1/subop/decrement 1/mod/*+disp8 2/rm32/edx . . . . 4/disp8 . # decrement *(edx+4) + # if !slice-starts-with?(word-slice, "test-") continue + # . . push args + 68/push "test-"/imm32 + 52/push-edx + # . . call + e8/call slice-starts-with?/disp32 + # . . discard args + 81 0/subop/add 3/mod/direct 4/rm32/esp . . . . . 8/imm32 # add to esp + # . if (eax == false) break + 3d/compare-eax-and 0/imm32/false + 74/jump-if-= $subx-gen-run-tests:continue/disp8 +$subx-gen-run-tests:call-test-function: + # tests-found? = true + bb/copy-to-ebx 1/imm32/true + # write(new-code-segment, " e8/call ") + # . . push args + 68/push " e8/call "/imm32 + 57/push-edi + # . . call + e8/call write/disp32 + # . . discard args + 81 0/subop/add 3/mod/direct 4/rm32/esp . . . . . 8/imm32 # add to esp + # write-slice(new-code-segment, word-slice) + # . . push args + 52/push-edx + 57/push-edi + # . . call + e8/call write-slice/disp32 + # . . discard args + 81 0/subop/add 3/mod/direct 4/rm32/esp . . . . . 8/imm32 # add to esp + # write(new-code-segment, "/disp32\n") + # . . push args + 68/push "/disp32\n"/imm32 + 57/push-edi + # . . call + e8/call write/disp32 + # . . discard args + 81 0/subop/add 3/mod/direct 4/rm32/esp . . . . . 8/imm32 # add to esp +$subx-gen-run-tests:continue: + # rewind-stream(line) + # . . push args + 51/push-ecx + # . . call + e8/call rewind-stream/disp32 + # . . discard args + 81 0/subop/add 3/mod/direct 4/rm32/esp . . . . . 4/imm32 # add to esp + # write-stream-data(out, line) + # . . push args + 51/push-ecx + ff 6/subop/push 1/mod/*+disp8 5/rm32/ebp . . . . 0xc/disp8 . # push *(ebp+12) + # . . call + e8/call write-stream-data/disp32 + # . . discard args + 81 0/subop/add 3/mod/direct 4/rm32/esp . . . . . 8/imm32 # add to esp + # loop + e9/jump $subx-gen-run-tests:loop/disp32 +$subx-gen-run-tests:break: + # if (!tests-found?) goto end + 81 7/subop/compare 3/mod/direct 3/rm32/ebx . . . . . 0/imm32/false # compare ebx + 74/jump-if-= $subx-gen-run-tests:end/disp8 + # write(new-code-segment, " c3/return\n") + # . . push args + 68/push " c3/return\n"/imm32 + 57/push-edi + # . . call + e8/call write/disp32 + # . . discard args + 81 0/subop/add 3/mod/direct 4/rm32/esp . . . . . 8/imm32 # add to esp + # write-stream-data(out, new-code-segment) + # . . push args + 57/push-edi + ff 6/subop/push 1/mod/*+disp8 5/rm32/ebp . . . . 0xc/disp8 . # push *(ebp+12) + # . . call + e8/call write-stream-data/disp32 + # . . discard args + 81 0/subop/add 3/mod/direct 4/rm32/esp . . . . . 8/imm32 # add to esp +$subx-gen-run-tests:end: + # flush(out) + # . . push args + ff 6/subop/push 1/mod/*+disp8 5/rm32/ebp . . . . 0xc/disp8 . # push *(ebp+12) + # . . call + e8/call flush/disp32 + # . . discard args + 81 0/subop/add 3/mod/direct 4/rm32/esp . . . . . 4/imm32 # add to esp + # . reclaim locals + 81 0/subop/add 3/mod/direct 4/rm32/esp . . . . . 0x21c/imm32 # add to esp + # . 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 + # . epilogue + 89/copy 3/mod/direct 4/rm32/esp . . . 5/r32/ebp . . # copy ebp to esp + 5d/pop-to-ebp + c3/return + +# . . vim:nowrap:textwidth=0 |