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* 5887 - reorganize libraryKartik Agaram2020-01-141-2/+2
| | | | | | | Layers 0-89 are used in self-hosting SubX. Layers 90-99 are not needed for self-hosting SubX, and therefore could use transitional levels of syntax sugar. Layers 100 and up use all SubX syntax sugar.
* 5865Kartik Agaram2020-01-021-2/+2
| | | | Give the bootstrap C++ program a less salient name.
* 5802Kartik Agaram2019-12-071-1/+1
| | | | Fix CI.
* 5675 - move helpers from subx-common into layersKartik Agaram2019-09-191-2/+2
| | | | | | | | | | | | | | | | This undoes 5672 in favor of a new plan: Layers 000 - 099 are for running without syntax sugar. We use them for building syntax-sugar passes. Layers 100 and up are for running with all syntax sugar. The layers are arranged in approximate order so more phases rely on earlier layers than later ones. I plan to not use intermediate syntax sugar (just sigils without calls, or sigils and calls without braces) anywhere except in the specific passes implementing them.
* 5652Kartik Agaram2019-09-141-1/+1
| | | | Fix CI.
* 5648Kartik Agaram2019-09-111-2/+1
| | | | Fix CI.
* 5510Kartik Agaram2019-08-141-1/+1
| | | | | Stop supporting CFLAGS in CI scripts; they're now meaty enough that I never run them locally in debug mode.
* 5485 - promote SubX to top-levelKartik Agaram2019-07-271-78/+23
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* 4248 -- simplify CIKartik Agaram2018-05-251-1/+1
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* 4219 - add an even simpler build scriptKartik K. Agaram2018-03-131-1/+1
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* 4218 - test build alternatives in CIKartik K. Agaram2018-03-131-3/+5
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* 4216 - include simpler alternative to build scriptKartik K. Agaram2018-03-121-3/+3
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* 4211Kartik K. Agaram2018-02-201-0/+1
| | | | | | | | Just ran into first issue from using the portable /bin/sh rather than a modern shell: https://stackoverflow.com/questions/15744421/read-command-doesnt-wait-for-input Turn on errexit everywhere.
* 3454Kartik K. Agaram2016-10-061-1/+1
| | | | Yet another fix for CI.
* 3453Kartik K. Agaram2016-10-061-0/+4
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* 3451Kartik K. Agaram2016-10-061-1/+1
| | | | Fix CI.
* 3450Kartik K. Agaram2016-10-061-1/+2
| | | | Purge remaining `makefile`s, without breaking CI.
* 3449Kartik K. Agaram2016-10-061-1/+2
| | | | Fix CI. Didn't mean to push just yet :/
* 3350Kartik K. Agaram2016-09-141-0/+2
| | | | Three separate CI fixes(!)
* 3283Kartik K. Agaram2016-08-291-1/+1
| | | | Fix CI.
* 3275Kartik K. Agaram2016-08-281-1/+1
| | | | Follow convention more closely by using CXXFLAGS for C++ files.
* 3029Kartik K. Agaram2016-06-021-0/+7
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* 2949 - disable Valgrind on app layer testsKartik K. Agaram2016-05-091-44/+33
| | | | | | | | | | | | | I kept suspecting Valgrind and kept finding that Valgrind wasn't actually slowing down Travis CI, but I'd been running it like this: valgrind ./mu test edit Which wasn't actually running the underlying ./mu_bin binary atop Valgrind. Ok, so Mu is just super slow running any non-trivial apps atop Valgrind. That's ok, we've rarely needed an app to flush out memory leaks in Mu.
* 2948Kartik K. Agaram2016-05-081-0/+1
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* 2946Kartik K. Agaram2016-05-081-11/+15
| | | | | | | | | | | | | Reorganize build system to minimize duplication while handling 3 scenarios: 1. Locally running tests with `mu test` 2. Locally running tests until some layer with `build_and_test_until` 3. Running on Linux with `test_layers` 4. Running on Travis CI with multiple sharded calls to `test_layers` One thing we drop at this point is support for OSX in test_layers. We don't need it now that we have Travis CI working.
* 2945Kartik K. Agaram2016-05-081-5/+44
| | | | More tweaking; edit/ still taking too long to test on Travis CI.
* 2944Kartik K. Agaram2016-05-081-3/+8
| | | | | | | | | 2943 almost worked; just a couple of tweaks: a) Divide up the work a little more finely since we still timed out on some jobs. b) Use clang and valgrind when running apps as well.
* 2942 - switch scripts to bashKartik K. Agaram2016-05-081-5/+5
| | | | | I'm already using grep and perl, bash is no worse, and it's *much* nicer to work in than plain Bourne sh.
* 2941 - split Travis CI into multiple jobsKartik K. Agaram2016-05-081-0/+32
It easily exceeded the 50-minute timeout.
generated by cgit-pink 1.4.1-2-gfad0 (git 2.36.2.497.gbbea4dcf42) at 2024-11-04 20:24:35 +0000
hich # also can take a file descriptor or stream, just like 'write'. But such # primitives don't exist in the Linux kernel, so we'd be implementing them # somehow, either with more internal buffering or by making multiple # syscalls. # # Reading into a stream avoids these problems. The buffer is externally # provided and the caller has control over where it's allocated, its lifetime, # and so on. The buffer's read and write pointers are internal to it so it's # easier to keep in a consistent state. And it can now be passed directly to # helpers like 'read-byte' or 'read-until' that only need to support streams, # never file descriptors. # # Like with 'write', we assume our data segment will never begin at an address # shorter than 0x08000000, so any smaller arguments are assumed to be real # file descriptors. # # As a reminder, a stream looks like this: # write: int # index at which to write to next # read: int # index at which to read next # data: (array byte) # prefixed by size as usual == 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 read: # f: fd or (addr stream byte), s: (addr stream byte) -> num-bytes-read/eax: int # . prologue 55/push-ebp 89/copy 3/mod/direct 5/rm32/ebp . . . 4/r32/esp . . # copy esp to ebp # if (f < 0x08000000) return _read(f, s) # f can't be a user-mode address, so treat it as a kernel file descriptor 81 7/subop/compare 1/mod/*+disp8 5/rm32/ebp . . . . 8/disp8 0x08000000/imm32 # compare *(ebp+8) 73/jump-if-addr>= $read:fake/disp8 # . . push args ff 6/subop/push 1/mod/*+disp8 5/rm32/ebp . . . . 0xc/disp8 . # push *(ebp+12) ff 6/subop/push 1/mod/*+disp8 5/rm32/ebp . . . . 8/disp8 . # push *(ebp+8) # . . call e8/call _read/disp32 # . . discard args 81 0/subop/add 3/mod/direct 4/rm32/esp . . . . . 8/imm32 # add to esp # return eb/jump $read:end/disp8 $read:fake: # otherwise, treat 'f' as a stream to scan from # . save registers 56/push-esi 57/push-edi # esi = f 8b/copy 1/mod/*+disp8 5/rm32/ebp . . . 6/r32/esi 8/disp8 . # copy *(ebp+8) to esi # edi = s 8b/copy 1/mod/*+disp8 5/rm32/ebp . . . 7/r32/edi 0xc/disp8 . # copy *(ebp+12) to esi # eax = _buffer-4(out = &s->data[s->write], outend = &s->data[s->size], # in = &f->data[f->read], inend = &f->data[f->write]) # . . push &f->data[f->write] 8b/copy 0/mod/indirect 6/rm32/esi . . . 0/r32/eax . . # copy *esi to eax 8d/copy-address 1/mod/*+disp8 4/rm32/sib 6/base/esi 0/index/eax . 0/r32/eax 0xc/disp8 . # copy esi+eax+12 to eax 50/push-eax # . . push &f->data[f->read] 8b/copy 1/mod/*+disp8 6/rm32/esi . . . 0/r32/eax 4/disp8 . # copy *(esi+4) to eax 8d/copy-address 1/mod/*+disp8 4/rm32/sib 6/base/esi 0/index/eax . 0/r32/eax 0xc/disp8 . # copy esi+eax+12 to eax 50/push-eax # . . push &s->data[s->size] 8b/copy 1/mod/*+disp8 7/rm32/edi . . . 0/r32/eax 8/disp8 . # copy *(edi+8) to eax 8d/copy-address 1/mod/*+disp8 4/rm32/sib 7/base/edi 0/index/eax . 0/r32/eax 0xc/disp8 . # copy edi+eax+12 to eax 50/push-eax # . . push &s->data[s->write] 8b/copy 0/mod/indirect 7/rm32/edi . . . 0/r32/eax . . # copy *edi to eax 8d/copy-address 1/mod/*+disp8 4/rm32/sib 7/base/edi 0/index/eax . 0/r32/eax 0xc/disp8 . # copy edi+eax+12 to eax 50/push-eax # . . call e8/call _buffer-4/disp32 # . . discard args 81 0/subop/add 3/mod/direct 4/rm32/esp . . . . . 0x10/imm32 # add to esp # s->write += eax 01/add 0/mod/indirect 7/rm32/edi . . . 0/r32/eax . . # add eax to *edi # f->read += eax 01/add 1/mod/*+disp8 6/rm32/esi . . . 0/r32/eax 4/disp8 . # add eax to *(esi+4) # . restore registers 5f/pop-to-edi 5e/pop-to-esi $read:end: # . epilogue 89/copy 3/mod/direct 4/rm32/esp . . . 5/r32/ebp . . # copy ebp to esp 5d/pop-to-ebp c3/return # - helpers # '_buffer' is like '_append', but silently stops instead of aborting when it runs out of space # 3-argument variant of _buffer _buffer-3: # out: address, outend: address, s: (array byte) -> num_bytes_buffered/eax # . prologue 55/push-ebp 89/copy 3/mod/direct 5/rm32/ebp . . . 4/r32/esp . . # copy esp to ebp # . save registers 51/push-ecx # eax = _buffer-4(out, outend, &s->data[0], &s->data[s->size]) # . . push &s->data[s->size] 8b/copy 1/mod/*+disp8 5/rm32/ebp . . 0/r32/eax 0x10/disp8 . # copy *(ebp+16) to eax 8b/copy 0/mod/indirect 0/rm32/eax . . . 1/r32/ecx . . # copy *eax to ecx 8d/copy-address 1/mod/*+disp8 4/rm32/sib 0/base/eax 1/index/ecx . 1/r32/ecx 4/disp8 . # copy eax+ecx+4 to ecx 51/push-ecx # . . push &s->data[0] 8d/copy-address 1/mod/*+disp8 0/rm32/eax . . . 1/r32/ecx 4/disp8 . # copy eax+4 to ecx 51/push-ecx # . . push outend ff 6/subop/push 1/mod/*+disp8 5/rm32/ebp . . . . 0xc/disp8 . # push *(ebp+12) # . . push out ff 6/subop/push 1/mod/*+disp8 5/rm32/ebp . . . . 8/disp8 . # push *(ebp+8) # . . call e8/call _buffer-4/disp32 # . . discard args 81 0/subop/add 3/mod/direct 4/rm32/esp . . . . . 0x10/imm32 # add to esp $_buffer-3:end: # . restore registers 59/pop-to-ecx # . epilogue 89/copy 3/mod/direct 4/rm32/esp . . . 5/r32/ebp . . # copy ebp to esp 5d/pop-to-ebp c3/return # 4-argument variant of _buffer _buffer-4: # out: address, outend: address, in: address, inend: address -> num_bytes_buffered/eax # . prologue 55/push-ebp 89/copy 3/mod/direct 5/rm32/ebp . . . 4/r32/esp . . # copy esp to ebp # . save registers 51/push-ecx 52/push-edx 53/push-ebx 56/push-esi 57/push-edi # eax/num_bytes_buffered = 0 b8/copy-to-eax 0/imm32 # edi = out 8b/copy 1/mod/*+disp8 5/rm32/ebp . . . 7/r32/edi 8/disp8 . # copy *(ebp+8) to edi # edx = outend 8b/copy 1/mod/*+disp8 5/rm32/ebp . . . 2/r32/edx 0xc/disp8 . # copy *(ebp+12) to edx # esi = in 8b/copy 1/mod/*+disp8 5/rm32/ebp . . . 6/r32/esi 0x10/disp8 . # copy *(ebp+16) to esi # ecx = inend 8b/copy 1/mod/*+disp8 5/rm32/ebp . . . 1/r32/ecx 0x14/disp8 . # copy *(ebp+20) to ecx $_buffer-4:loop: # if (in >= inend) break 39/compare 3/mod/direct 6/rm32/esi . . . 1/r32/ecx . . # compare esi with ecx 73/jump-if-addr>= $_buffer-4:end/disp8 # if (out >= outend) break # for now silently ignore filled up buffer 39/compare 3/mod/direct 7/rm32/edi . . . 2/r32/edx . . # compare edi with edx 73/jump-if-addr>= $_buffer-4:end/disp8 # *out = *in 8a/copy-byte 0/mod/indirect 6/rm32/esi . . . 3/r32/BL . . # copy byte at *esi to BL 88/copy-byte 0/mod/indirect 7/rm32/edi . . . 3/r32/BL . . # copy byte at BL to *edi # ++num_bytes_buffered 40/increment-eax # ++in 46/increment-esi # ++out 47/increment-edi eb/jump $_buffer-4:loop/disp8 $_buffer-4:end: # . restore registers 5f/pop-to-edi 5e/pop-to-esi 5b/pop-to-ebx 5a/pop-to-edx 59/pop-to-ecx # . epilogue 89/copy 3/mod/direct 4/rm32/esp . . . 5/r32/ebp . . # copy ebp to esp 5d/pop-to-ebp c3/return # idea: a clear-if-empty method on streams that clears only if f->read == f->write # Unclear how I'd use it, though. Callers seem to need the check anyway. # Maybe a better helper would be 'empty-stream?' _read: # fd: int, s: (addr stream byte) -> num-bytes-read/eax: int # . prologue 55/push-ebp 89/copy 3/mod/direct 5/rm32/ebp . . . 4/r32/esp . . # copy esp to ebp # . save registers 51/push-ecx 52/push-edx 53/push-ebx 56/push-esi # esi = s 8b/copy 1/mod/*+disp8 5/rm32/ebp . . . 6/r32/esi 0xc/disp8 . # copy *(ebp+12) to esi # eax = s->write 8b/copy 0/mod/indirect 6/rm32/esi . . . 0/r32/eax . . # copy *esi to eax # edx = s->size 8b/copy 1/mod/*+disp8 6/rm32/esi . . . 2/r32/edx 8/disp8 . # copy *(esi+8) to edx # syscall(read, fd, &s->data[s->write], s->size - s->write) # . . fd: ebx 8b/copy 1/mod/*+disp8 5/rm32/ebp . . . 3/r32/ebx 8/disp8 . # copy *(ebp+8) to ebx # . . data: ecx = &s->data[s->write] 8d/copy-address 1/mod/*+disp8 4/rm32/sib 6/base/esi 0/index/eax . 1/r32/ecx 0xc/disp8 . # copy esi+eax+12 to ecx # . . size: edx = s->size - s->write 29/subtract 3/mod/direct 2/rm32/edx . . . 0/r32/eax . . # subtract eax from edx # . . syscall e8/call syscall_read/disp32 # add the result eax to s->write 01/add 0/mod/indirect 6/rm32/esi . . . 0/r32/eax . . # add eax to *esi $_read:end: # . restore registers 5e/pop-to-esi 5b/pop-to-ebx 5a/pop-to-edx 59/pop-to-ecx # . epilogue 89/copy 3/mod/direct 4/rm32/esp . . . 5/r32/ebp . . # copy ebp to esp 5d/pop-to-ebp c3/return # Two options: # 1 (what we have above): # ecx = s # eax = s->write # edx = s->size # # syscall # ecx = lea ecx+eax+12 # edx = sub edx eax # # 2: # ecx = s # edx = s->size # ecx = &s->data # # syscall # ecx = add ecx, s->write # edx = sub edx, s->write # # Not much to choose between the two? Option 2 performs a duplicate load to # use one less register, but doesn't increase the amount of spilling (ecx # and edx must be used, and eax must be clobbered anyway). # - tests test-read-single: # - write a single character into _test-stream, then read from it # clear-stream(_test-stream) # . . push args 68/push _test-stream/imm32 # . . call e8/call clear-stream/disp32 # . . discard args 81 0/subop/add 3/mod/direct 4/rm32/esp . . . . . 4/imm32 # add to esp # clear-stream(_test-tmp-stream) # . . push args 68/push _test-tmp-stream/imm32 # . . call e8/call clear-stream/disp32 # . . discard args 81 0/subop/add 3/mod/direct 4/rm32/esp . . . . . 4/imm32 # add to esp # write(_test-stream, "Ab") # . . push args 68/push "Ab"/imm32 68/push _test-stream/imm32 # . . call e8/call write/disp32 # . . discard args 81 0/subop/add 3/mod/direct 4/rm32/esp . . . . . 8/imm32 # add to esp # eax = read(_test-stream, _test-tmp-stream) # . . push args 68/push _test-tmp-stream/imm32 68/push _test-stream/imm32 # . . call e8/call read/disp32 # . . discard args 81 0/subop/add 3/mod/direct 4/rm32/esp . . . . . 8/imm32 # add to esp # check-ints-equal(eax, 2, msg) # . . push args 68/push "F - test-read-single: return value"/imm32 68/push 2/imm32 50/push-eax # . . call e8/call check-ints-equal/disp32 # . . discard args 81 0/subop/add 3/mod/direct 4/rm32/esp . . . . . 0xc/imm32 # add to esp # check-stream-equal(_test-tmp-stream, "Ab", msg) # . . push args 68/push "F - test-read-single"/imm32 68/push "Ab"/imm32 68/push _test-tmp-stream/imm32 # . . call e8/call check-stream-equal/disp32 # . . discard args 81 0/subop/add 3/mod/direct 4/rm32/esp . . . . . 0xc/imm32 # add to esp # end c3/return test-read-is-stateful: # - make two consecutive reads, check that their results are appended # clear-stream(_test-stream) # . . push args 68/push _test-stream/imm32 # . . call e8/call clear-stream/disp32 # . . discard args 81 0/subop/add 3/mod/direct 4/rm32/esp . . . . . 4/imm32 # add to esp # clear-stream(_test-tmp-stream) # . . push args 68/push _test-tmp-stream/imm32 # . . call e8/call clear-stream/disp32 # . . discard args 81 0/subop/add 3/mod/direct 4/rm32/esp . . . . . 4/imm32 # add to esp # write(_test-stream, "C") # . . push args 68/push "C"/imm32 68/push _test-stream/imm32 # . . call e8/call write/disp32 # . . discard args 81 0/subop/add 3/mod/direct 4/rm32/esp . . . . . 8/imm32 # add to esp # read(_test-stream, _test-tmp-stream) # . . push args 68/push _test-tmp-stream/imm32 68/push _test-stream/imm32 # . . call e8/call read/disp32 # . . discard args 81 0/subop/add 3/mod/direct 4/rm32/esp . . . . . 8/imm32 # add to esp # write(_test-stream, "D") # . . push args 68/push "D"/imm32 68/push _test-stream/imm32 # . . call e8/call write/disp32 # . . discard args 81 0/subop/add 3/mod/direct 4/rm32/esp . . . . . 8/imm32 # add to esp # read(_test-stream, _test-tmp-stream) # . . push args 68/push _test-tmp-stream/imm32 68/push _test-stream/imm32 # . . call e8/call read/disp32 # . . discard args 81 0/subop/add 3/mod/direct 4/rm32/esp . . . . . 8/imm32 # add to esp # check-stream-equal(_test-tmp-stream, "CD", msg) # . . push args 68/push "F - test-read-is-stateful"/imm32 68/push "CD"/imm32 68/push _test-tmp-stream/imm32 # . . call e8/call check-stream-equal/disp32 # . . discard args 81 0/subop/add 3/mod/direct 4/rm32/esp . . . . . 0xc/imm32 # add to esp # end c3/return test-read-returns-0-on-end-of-file: # - read after hitting end-of-file, check that result is 0 # setup # . clear-stream(_test-stream) # . . push args 68/push _test-stream/imm32 # . . call e8/call clear-stream/disp32 # . . discard args 81 0/subop/add 3/mod/direct 4/rm32/esp . . . . . 4/imm32 # add to esp # . clear-stream(_test-tmp-stream) # . . push args 68/push _test-tmp-stream/imm32 # . . call e8/call clear-stream/disp32 # . . discard args 81 0/subop/add 3/mod/direct 4/rm32/esp . . . . . 4/imm32 # add to esp # . write(_test-stream, "Ab") # . . push args 68/push "Ab"/imm32 68/push _test-stream/imm32 # . . call e8/call write/disp32 # . . discard args 81 0/subop/add 3/mod/direct 4/rm32/esp . . . . . 8/imm32 # add to esp # first read gets to end-of-file # . read(_test-stream, _test-tmp-stream) # . . push args 68/push _test-tmp-stream/imm32 68/push _test-stream/imm32 # . . call e8/call read/disp32 # . . discard args 81 0/subop/add 3/mod/direct 4/rm32/esp . . . . . 8/imm32 # add to esp # second read # . read(_test-stream, _test-tmp-stream) # . . push args 68/push _test-tmp-stream/imm32 68/push _test-stream/imm32 # . . call e8/call read/disp32 # . . discard args 81 0/subop/add 3/mod/direct 4/rm32/esp . . . . . 8/imm32 # add to esp # check-ints-equal(eax, 0, msg) # . . push args 68/push "F - test-read-returns-0-on-end-of-file"/imm32 68/push 0/imm32 50/push-eax # . . call e8/call check-ints-equal/disp32 # . . discard args 81 0/subop/add 3/mod/direct 4/rm32/esp . . . . . 0xc/imm32 # add to esp # end c3/return == data _test-tmp-stream: # (stream byte) # current write index 0/imm32 # current read index 0/imm32 # size 8/imm32 # data 00 00 00 00 00 00 00 00 # 8 bytes # . . vim:nowrap:textwidth=0
generated by cgit-pink 1.4.1-2-gfad0 (git 2.36.2.497.gbbea4dcf42) at 2024-11-04 20:24:33 +0000