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* 4741Kartik Agaram2018-10-302-0/+0
| | | | Extract a helper that we'll need for 'read'.
* 4740Kartik Agaram2018-10-302-0/+0
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* 4736Kartik Agaram2018-10-292-0/+0
| | | | | | | | | We'll use a common stream data structure for input and output streams. Having separate types makes more sense in a more high-level language, where we have type checking and where functions for handling the different types are more concise. But in machine code the sweet spot is more toward fewer types.
* 4733Kartik Agaram2018-10-281-1/+1
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* 4732Kartik Agaram2018-10-281-0/+0
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* 4731Kartik Agaram2018-10-282-11/+11
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* 4729Kartik Agaram2018-10-283-38/+50
| | | | | | Start injecting all dependencies in the Crenshaw compiler app. In the process I realized the non-fake code path of 'stop' had a bug.
* 4721Kartik Agaram2018-10-242-0/+0
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* 4713Kartik Agaram2018-10-212-0/+0
| | | | | | | | Initial sketch of a dependency-injected wrapper around the exit() syscall. I don't have the primitives yet, just a sketch of how they should work -- and a passing test for non-local jumps without support for passing the exit status to the caller.
* 4711Kartik Agaram2018-10-172-0/+0
| | | | | | | Extract a helper for appending strings to raw buffers. I'd been resisting this idea, but it actually turns out to be a pretty clean abstraction in the end.
* 4710Kartik Agaram2018-10-173-8/+8
| | | | | Start using write() instead of _write().. and we promptly find a typo when dealing with real file descriptors.
* 4707 - subx: dependency-injected write() primitiveKartik Agaram2018-10-162-0/+0
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* 4703Kartik Agaram2018-10-161-4/+4
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* 4700Kartik Agaram2018-10-161-2/+2
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* 4699Kartik Agaram2018-10-143-43/+16
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* 4698Kartik Agaram2018-10-141-4/+4
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* 4697Kartik Agaram2018-10-142-0/+0
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* 4691Kartik Agaram2018-10-132-0/+0
| | | | All tests now once again run the same natively and on VM.
* 4684Kartik Agaram2018-10-113-2/+3
| | | | | | | | | | Turns out the tests for 'trace' have been broken in native mode since the original commit (4674). Dangers of running my tests on Darwin, where I can't run them natively. The test failures didn't get flagged on CI because I'd forgotten to update the exit code of the factorial app in commit 4664. At least that's fixed in this commit.
* 4682 - subx: start testing all layers of 'library'Kartik Agaram2018-10-102-0/+0
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* 4674Kartik Agaram2018-10-082-0/+0
| | | | subx: append to trace
* 4670Kartik Agaram2018-10-051-1/+1
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* 4668Kartik Agaram2018-10-052-8/+8
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* 4667Kartik Agaram2018-10-054-20/+20
| | | | | Standardize on hyphens in all names. And we'll use colons for namespacing labels in functions.
* 4664 - subx: reflect test failures in exit statusKartik Agaram2018-10-052-0/+0
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* 4663Kartik Agaram2018-10-051-1/+1
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* 4662Kartik Agaram2018-10-052-2/+2
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* 4661Kartik Agaram2018-10-042-0/+0
| | | | | Make segment management a little more consistent between initial segments and add-on segments (using `mmap`).
* 4658 - subx: string_equalKartik Agaram2018-10-022-0/+0
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* 4655Kartik Agaram2018-10-022-3/+3
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* 4653Kartik Agaram2018-10-021-3/+3
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* 4651Kartik Agaram2018-10-021-1/+3
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* 4645Kartik Agaram2018-10-011-0/+0
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* 4644Kartik Agaram2018-10-014-24/+24
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* 4641Kartik Agaram2018-10-013-1/+1
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* 4638 - extract some common libraries from appsKartik Agaram2018-10-014-644/+4
| | | | | | | I'm still trying to figure out what the defaults should be. At the moment you have to explicitly pass in every file you want loaded into the output binary. Maybe that control is a good thing. The examples need no libraries so far.
* 4624Kartik Agaram2018-09-302-2/+2
| | | | | | | | Start requiring a '-o' flag to designate the output binary when translating. Things currently get funky if you pass in multiple inputs, but that's ok. This is the first step to supporting multiple input files for a single output binary.
* 4518Kartik Agaram2018-09-244-44/+117
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* 4517Kartik Agaram2018-09-242-13/+13
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* 4516Kartik K. Agaram2018-09-244-42/+64
| | | | | | | More calling convention tweaks. Use EBP to get consistently at parameters and locals. Always put the first function argument closest to EBP.
* 4514Kartik Agaram2018-09-242-3/+11
| | | | Get the calling convention right, per http://www.cs.virginia.edu/~evans/cs216/guides/x86.html
* 4513Kartik Agaram2018-09-242-8/+0
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* 4511Kartik Agaram2018-09-231-0/+0
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* 4510Kartik Agaram2018-09-232-4/+270
| | | | | Add the test harness to the crenshaw compiler. Though we aren't calling it yet. But that's because we aren't actually doing anything useful yet.
* 4509Kartik Agaram2018-09-231-19/+4
| | | | Back to the Crenshaw compiler. Start by using string literals.
* 4508Kartik Agaram2018-09-232-20/+184
| | | | Upgrade the test harness for the factorial "app" from ex11.
* 4506Kartik Agaram2018-09-232-0/+13
| | | | | | | | | | | | check_ints_equal now prints a newline after the failure message on failure. We still don't know how to print a final newline after all the tests have run, for the common case when all tests pass. Ideally I could just emit a few instructions to `run_tests`. But I'd also need to add a variable for the newline to the data segment. Or I need some literal syntax for newlines in strings. We don't have support for backslash-escapes yet.
* 4505Kartik Agaram2018-09-232-8/+27
| | | | | | | | | | | | Extract a helper from the factorial unit test: check_ints_equal. Start of a vocabulary for unit tests. I *could* also start thinking of supporting multi-file programs, but I'm going to resist the temptation for now. Copy helpers as necessary, and allow them to mutate and diverge for a while before we pummel them into a Procrustean "standard library". Extracting a body of shared code immediately starts to discourage innovation in the shared code.
* 4502 - support string literals directly in codeKartik Agaram2018-09-221-14/+2
| | | | | | | | | | Doesn't de-duplicate in the data segment, though. If you use the literal "foo" a hundred times in your code segment you're gonna spend a hundred times the space you need to. We can now simplify our test harness a bit in the factorial app, but we still have to put in commandline args to compare with manually. We only support length-prefixed strings, not null-terminated ones.
* 4591Kartik Agaram2018-09-221-19/+19
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