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Author SHA1 Message Date
Jef
1eebc65c9e First baby steps to supporting memory accesses 
Currently we don't actually sandbox the memory at all, so you can do evil things
like read and write the host's memory. We also don't support growing memory or
cranelift-compatible ABI that passes the memory offset as an argument.

We also always immediately allocate the buffer when encountering a memory section,
there is preliminary support for translating a buffer which can then have the real
offset replaced using relocations (and returning a different type when doing so)
but I haven't written the code that actually does relocation so it doesn't work yet.
 2019-01-11 15:20:32 +01:00
Dan Gohman
9fe08c9341 Tidy up pointer casting to avoid casts that change mutability. 2019-01-08 10:31:58 -08:00
Jef
ddb4c0fd19 x64 sign-extends imm32 arguments, so don't truncate them in an unsigned way 2019-01-08 11:10:59 +01:00
Jef
010f2d8569 Fix comparisons, add more tests for binops 2019-01-08 09:45:39 +01:00
Jef
fcd18746a7 Add 64-bit operations 2019-01-07 19:17:29 +01:00
Dan Gohman
0a2b0ee9b0 Mmap API tidying. 
Establish more clear expectations for who is expected to page-align what
and when.
 2019-01-06 10:08:40 -08:00
Dan Gohman
0826e32c9a Tidy up unnecessary return statements. 2019-01-05 16:23:04 -08:00
Dan Gohman
3143e22566 Move the creation of linear-memory guard pages into the mmap module. 
Create linear-memory pages as PROT_NONE and then make them accessible on
demand.
 2019-01-05 16:23:04 -08:00
Dan Gohman
3ac4269dc5 Add host_state() accessors to InstanceContents and VMContext too. 2019-01-04 17:24:14 -08:00
Dan Gohman
73b2c45313 Add a host_state field to Instance. 
This allows hosts to embed arbitrary state along with instances.
 2019-01-04 17:15:22 -08:00
Dan Gohman
3aef763046 Delete an unneeded comment. 2019-01-03 15:50:04 -08:00
Dan Gohman
6661228c86 Tidy up whitespace. 2019-01-03 14:44:30 -08:00
Dan Gohman
e876f0fb1d Add some Cargo.toml keywords. 2019-01-03 14:25:33 -08:00
Dan Gohman
35d7f78a11 Handle errors cleanly in the wast runner. 2019-01-03 14:16:48 -08:00
Dan Gohman
40acc1f340 Add crate version identifiers. 2019-01-03 14:16:48 -08:00
Dan Gohman
585bdac91e Use vec![0; size] instead of creating an empty Vec and resizing. 2019-01-03 14:16:48 -08:00
Dan Gohman
a41bc1fe1e Fix unused use warnings. 2019-01-03 14:16:48 -08:00
Dan Gohman
ca2fdc5ccb Update no_std support. 
This `no_std` support isn't complete though, as some dependencies
don't support it.
 2019-01-03 14:16:48 -08:00
Dan Gohman
f6c2fe7d2d Update to Rust 2018 Edition. 2019-01-03 12:58:11 -08:00
Dan Gohman
00a84672f7 Use Vec::with_capacity. 2019-01-03 12:37:14 -08:00
Dan Gohman
fdc66e130f Eliminate unneeded casts. 2019-01-03 12:05:32 -08:00
Dan Gohman
39770ec72c Minor code tidying. 2019-01-03 12:05:26 -08:00
Dan Gohman
701b1998e9 Avoid creating slices with null pointers. 2019-01-03 12:05:17 -08:00
Dan Gohman
57e183f5f8 Use TablePlan::for_table and MemoryPlan::for_memory instead of manual code. 2019-01-03 12:05:07 -08:00
Dan Gohman
8a5429ce74 Factor out functions for working with table and memory initializers. 2019-01-03 12:04:58 -08:00
Dan Gohman
747dbb23e7 Add fuzz targets for module instantiation. 2019-01-03 12:04:48 -08:00
Dan Gohman
df7724ce2b Update Cargo.toml authors fields. 2019-01-03 12:04:37 -08:00
Dan Gohman
2f04b78ecf Use cast::usize rather than as usize to avoid silent overflow. 2019-01-03 12:04:24 -08:00
Dan Gohman
529de7ca60 Tidy up unneeded '&'s. 2019-01-03 12:03:52 -08:00
Dan Gohman
c66a3c23f3 Tidy up some documentation comments. 2019-01-03 12:03:43 -08:00
Dan Gohman
3ce2127bfa Eliminate the intermediate "base" global variables. 2019-01-03 12:03:33 -08:00
Dan Gohman
3431122440 Update to bindgen 0.46. 2019-01-03 12:03:22 -08:00
Dan Gohman
1ae5c13b8c Signature ID loads are readonly. 2019-01-03 12:03:14 -08:00
Dan Gohman
8939d1252a Document that wasmtime-runtime is meant to be compiled for the target. 2019-01-03 12:02:57 -08:00
Dan Gohman
3270369a69 Restructure VMContext to eliminate a level of indirection. 2019-01-03 12:02:35 -08:00
Dan Gohman
ff6776fe10 Refactor instance accessor routines. 
This helps localize the unsafe code needed to access these fields.
 2019-01-03 11:49:25 -08:00
Dan Gohman
482a054c75 Move the signature_ids field first. 2019-01-03 11:49:15 -08:00
Dan Gohman
e8e8f453a4 Refactor out the code for creating the signature_ids base global value. 2019-01-03 11:49:04 -08:00
Dan Gohman
087b5b4dff Implement cross-instance indirect calls. 2019-01-03 11:48:53 -08:00
Dan Gohman
b646f9b4e0 Clarify a comment. 2019-01-03 11:48:43 -08:00
Dan Gohman
9d73123e3e Reformat a comment to fit within 100 columns. 2019-01-03 11:48:34 -08:00
Dan Gohman
bec724b501 Whitespace tidying. 2019-01-03 11:48:26 -08:00
Dan Gohman
b704f5ad30 Update to wasmparser 0.23.0. 2019-01-03 11:48:13 -08:00
Dan Gohman
63c9143e87 Update to bindgen 0.45. 2019-01-03 11:48:05 -08:00
Dan Gohman
7592c99f3b Refactor the compilation and instantiation pipeline. 
wasmtime-execute is now wasmtime-jit. Move `JITCode` and the TargetIsa
into a new `Compiler` type. `InstancePlus` is no more, with trampoline
functionality now handled by `Compiler`.
 2019-01-03 11:47:55 -08:00
Dan Gohman
450a279e18 Rename wasmtime's logfile names. 2019-01-03 11:47:40 -08:00
Dan Gohman
f997cde2db Don't create Static memories larger than the Tunables' static bound size. 2018-12-24 22:08:36 -08:00
Dan Gohman
57a1618742 Catch EXCEPTION_INT_OVERFLOW exceptions too. 2018-12-24 22:08:36 -08:00
Dan Gohman
a5a23d8c4a Factor WasmNamespace out of lib/wast and into lib/execute as Namespace. 
This makes it usable for things other than just wast tests.
 2018-12-24 22:08:36 -08:00
Dan Gohman
71c0142cd4 Rename the address field of Table/Memory/Global exports to definition. 
For functions, `address` makes sense because it's the address of the
function. Bt for Table/Memory/Global, it points to a `VM*Definition` field.
 2018-12-24 18:20:15 -08:00