Brian Carroll
8a384ffa88
Wasm: parse just enough of the Import section to count functions
2022-01-13 05:41:52 +00:00
Brian Carroll
9f0e0d5099
Wasm: create a hashmap of exported functions
2022-01-13 05:41:52 +00:00
Brian Carroll
fa46ab95fc
Wasm: rename some constants
2022-01-13 05:41:52 +00:00
Brian Carroll
f9fbe461d1
Wasm: Fix section parsing bug
2022-01-13 05:41:52 +00:00
Brian Carroll
9c0abcd0da
Wasm: Preload WasmModule from object file bytes
2022-01-13 05:41:52 +00:00
Brian Carroll
d3554b2ac0
Wasm: Create Section trait for common functionality between module sections
2022-01-13 05:41:52 +00:00
Brian Carroll
5d5e0eca96
Wasm: Convert remaining sections to store bytes, and add .size() methods
2022-01-13 05:41:52 +00:00
Brian Carroll
5a39002e8b
Wasm: Serialize WasmModule without linking info
2022-01-13 05:41:52 +00:00
Brian Carroll
b8ab6af203
Wasm: move WasmModule definition to mod.rs
2022-01-13 05:41:52 +00:00
Brian Carroll
d88b86e884
Wasm: change TypeSection tests to unit tests rather than integration tests
2022-01-13 05:41:52 +00:00
Brian Carroll
8e7f398e50
Wasm: Remove code to adjust function indices based on imports
...
With pre-linking we don't need this anymore. Pure Roc code can't add Imports.
2022-01-13 05:41:52 +00:00
Brian Carroll
c5653951a4
Wasm: improve the TypeSection preload test
2022-01-10 10:26:43 +00:00
Brian Carroll
8f73b722ff
Wasm: fix release build
2022-01-10 10:26:43 +00:00
Brian Carroll
fc677e8d58
Wasm: add preloading logic for Types section
2022-01-10 10:26:43 +00:00
Brian Carroll
c89f74f7e8
Wasm: clippy fixes
2022-01-10 10:26:43 +00:00
Brian Carroll
a1f737d6d8
Wasm: Create OpaqueSection for sections that may be used in builtins but not by us
2022-01-10 10:26:43 +00:00
Brian Carroll
738434329e
Wasm: refactor the model of the Linking section
2022-01-10 10:26:42 +00:00
Brian Carroll
6db7dbed1c
Wasm: Store DataSection as bytes and segment count
2022-01-10 10:26:42 +00:00
Brian Carroll
b8f51fb1bb
Wasm: add preloaded_bytes and preloaded_count to Code section
2022-01-10 10:26:42 +00:00
Brian Carroll
743e14148c
Wasm: Store Function section as bytes and a count
2022-01-10 10:26:42 +00:00
Brian Carroll
7a6c6b675c
Wasm: Store type signatures in serialized form
2022-01-10 10:26:42 +00:00
Brian Carroll
1f86ad3438
Fix Wasm function indices for generated helpers
2021-12-26 10:40:45 +00:00
Brian Carroll
b8f40011b9
Generate a test "platform" with libc allocator functions
2021-11-16 11:59:46 +00:00
Brian Carroll
a5c3809290
Delete DataCountSection. Not well-supported and only needed for instructions we don't use
...
https://webassembly.github.io/spec/core/binary/modules.html#binary-datacountsec
Tools like wasm2wat and wasm-validate reject the module when this section is included!
Its purpose is to enable single-pass validation for two specific instructions that were
not in the original Wasm MVP: memory.init and data.drop.
We don't use them in our Roc backend. It seems to make sense just to drop the section.
2021-11-15 12:59:28 +00:00
Brian Carroll
830003c9a3
Change wasm opcodes to an enum
2021-11-10 20:18:55 +00:00
Brian Carroll
d0ffaabe83
Re-index all internal functions to make room for imported external functions
...
Linked external functions must be declared in the Import section,
and they must come first in the function index space.
In other words, internal function numbers start at the number of imports.
However we don't know in advance how many builtins the code may call,
and we don't want to add more passes over the full IR. Instead we re-index
function references at the end of code generation.
2021-11-09 14:50:53 +00:00
Brian Carroll
9e6147a9de
Add Debug implementations for sections
2021-11-09 14:28:15 +00:00
Brian Carroll
5bfc0093ec
Intitialise CodeSection with just the right capacity
2021-11-08 14:59:49 +00:00
Brian Carroll
34b57cf315
Refactor after creating constant linking data
2021-11-07 11:23:20 +00:00
Brian Carroll
38d9fc5bbd
Add linker data for strings, and deduplicate them
...
For references to addresses of constant strings, we make an entry in
reloc.CODE and configure the relocation type to say it points at a
memory address. (At least I think this is right, I can't test it yet!)
The same info can also be used for de-duplication.
It turns out we don't need reloc.DATA. I had misunderstood it.
The use case for that would be constant nested data structures,
where constant data would contain pointers to other constant data.
I don't think we're doing this in Roc at all, but not sure.
2021-11-07 11:20:32 +00:00
Brian Carroll
e5a0738681
Rename CodeSection serializer, since it doesn't actually mutate
2021-11-05 12:25:27 +00:00
Brian Carroll
01b47a2ec7
Add inline directives to ensure unit placeholders are optimised away
2021-11-05 12:11:37 +00:00
Brian Carroll
d220ed7a23
Refactor module section serialization
2021-11-05 12:11:33 +00:00
Brian Carroll
4dcb65cc46
Fix data count section for the case where data section is empty
2021-11-05 08:36:18 +00:00
Brian Carroll
c5d99433f7
Fix build error
...
And slightly improve efficiency by exiting early from an iteration
2021-11-04 23:21:48 +00:00
Brian Carroll
09f2ce327c
Change some comments after self-review
2021-11-04 21:19:23 +00:00
Brian Carroll
0d1946a782
Don't generate a DataSection unless we actually need it!
2021-11-04 20:50:32 +00:00
Brian Carroll
414c9e6f86
Move WasmModule initialisation into WasmBackend
...
It helps to coordinate different sections with related values,
based on knowledge of Roc rather than Wasm.
2021-11-04 20:41:23 +00:00
Brian Carroll
1b91fd9533
Get rid of some overcomplicated Data section stuff
...
Currently a Wasm module can only have one memory
The Data Segment spec allows for more in future
But the format is confusing enough already without that!
Let's just get rid of that complexity, we don't need it.
2021-11-04 19:44:10 +00:00
Brian Carroll
c57d99c1ac
Create types for DataSection
2021-11-04 18:58:17 +00:00
Brian Carroll
b432d923b1
Create a linking module
2021-11-03 11:46:46 +00:00
Brian Carroll
d87db20478
clippy
2021-11-03 11:31:12 +00:00
Brian Carroll
ad9b761fce
Move wasm file format code into a submodule
2021-11-03 11:20:16 +00:00
