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1,155 Commits 54 Branches 21 Tags 80 MiB
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29 Commits

Author SHA1 Message Date
Lachlan Sneff
51cf9dde05 Move SSA value caches to the entry block. 
The supporting framework around LLVM will make sure to only compute values once if they
are known to never change. Previously, these values were attempted to be reused from places where
the users may not dominate the creation of the value. To avoid that, they are always created
in the entry block now.
 2019-03-03 21:13:37 -08:00
Brandon Fish
c07298e58e Make capstone optional with a feature 2019-03-03 16:02:20 -06:00
Brandon Fish
aae256b407 Add tag to fix cast ptr lint error 2019-03-03 15:34:20 -06:00
Brandon Fish
97a70327d0 Fix compilation of test example 2019-03-03 15:13:20 -06:00
Brandon Fish
2c765c87c5 Update locals reading to use count 2019-03-03 12:55:29 -06:00
Lachlan Sneff
e362b56b07 Turns out we can just throw an exception from the signal handler 
without any fancy tricks.

This has been tested on macos, hopefully it works on linux too.
 2019-03-03 02:15:53 -08:00
Lachlan Sneff
9cfda6800f Try to return an error from call_protected when an exception occurs. 
Something breaks pretty drastically sometimes, not sure why.
 2019-03-02 19:08:15 -08:00
Lachlan Sneff
caf2205936 Add a signal handler for macos and linux. 
Implementation Notes:
- To avoid setjmp, longjmp, and the mess that those create, we instead set the interrupting
    context of the signal handler to return into the `throw_trap` routine. To my surprise,
    this actually works. The stack ends up getting unwound normally and the memory-oob error
    is caught by the trampoline.
 2019-03-02 17:00:05 -08:00
Lachlan Sneff
57bfa9b0a4 Remove multiple throwing functions, just use one. 2019-03-02 14:16:02 -08:00
Lachlan Sneff
9a90689b93 Add preliminary support for throwing and catching uncatchable exceptions. 
Additional info:
- WebAssembly "traps" are uncatchable, but are still caught by the trampoline caller.
 2019-03-02 12:57:35 -08:00
Lachlan Sneff
5760f6006a Start implementing exception handling by adding frame descriptor entry processing. 
- Soon, we should be able basic exceptions.
 2019-03-02 10:56:02 -08:00
Lachlan Sneff
87ddf4f855 Add personality function. 
- This is part of supporting exceptions in the future.
 2019-03-02 10:20:18 -08:00
Lachlan Sneff
a6fc06c908 Fix more compiling issues 
Specifically:
- Don't truncate the list of local parameters.
- If the default destination in a br_table instruction is a loop, don't pop any results.
 2019-03-02 10:04:44 -08:00
Lachlan Sneff
362e5aa160 Fix issue caused by dangling instruction. 
- Come on inkwell, I thought you were better than this.
 2019-03-01 20:28:27 -08:00
Lachlan Sneff
f0ac76517a Start running spectests 
Additional info:
- Execution is turned off, this is just to make sure the backend can compile the entire specsuite.
- That being said, trampolines are implemented and protected call works (just doesn't protect).
 2019-03-01 17:11:20 -08:00
Lachlan Sneff
3717c5720d Get control flow (at least according to the llvm verifier) working. 
Next up:
- Importing vm intrinsics.
 2019-03-01 15:48:43 -08:00
Lachlan Sneff
51c9091fc5 Start work on generating trampolines 2019-02-28 18:26:47 -08:00
Lachlan Sneff
6a20676fa9 Actually unmap the code after it's done being used 2019-02-28 17:20:18 -08:00
Lachlan Sneff
359ac5abec Connect part of the llvm backend to the runtime 2019-02-28 13:18:00 -08:00
Lachlan Sneff
d4ae5cdd40 Get function addresses from llvm-compiled code 2019-02-28 12:31:39 -08:00
Lachlan Sneff
5d77769381 Hopefully finish the memory manager implementation for llvm RuntimeDyLd 2019-02-27 17:21:20 -08:00
Lachlan Sneff
4f833876e0 Start work on object loader using llvm's RuntimeDyld api. 2019-02-25 18:08:06 -08:00
Lachlan Sneff
2a913f5663 Implement table, partial call_indirect 2019-02-22 17:34:55 -08:00
Lachlan Sneff
108973dabe Start producing object files with llvm 2019-02-15 16:02:20 -08:00
Lachlan Sneff
73b4f7d337 Implement memory and global operations 2019-02-14 18:08:20 -08:00
Lachlan Sneff
8827830aba implement load* and store* instructions 2019-02-14 15:13:58 -08:00
Lachlan Sneff
2572a0259b Get control flow working (fingers crossed) 2019-02-12 18:02:00 -08:00
Lachlan Sneff
5ee19e55a5 Add some branching instructions 2019-02-11 19:34:04 -08:00
Lachlan Sneff
327e3a4a1a Implement many wasm instructions 2019-02-09 15:53:40 -08:00