Lachlan Sneff
5d77769381
Hopefully finish the memory manager implementation for llvm RuntimeDyLd
2019-02-27 17:21:20 -08:00
Syrus
60f8f15db3
Updated version to 0.2.1
2019-02-27 17:20:49 -08:00
Mackenzie Clark
95062d524a
commit virtual memory before copying ( #212 )
2019-02-27 14:20:53 -08:00
Mackenzie Clark
ff5e1320da
Fix casting errors cause io issues ( #222 )
2019-02-27 13:54:28 -08:00
Mackenzie Clark
2a7a8c0069
newline in test-module-imports.c
2019-02-27 10:41:22 -08:00
Mackenzie Clark
c4566f0b39
Merge branch 'master' into feature/add-c-api-module-export-descriptors
2019-02-27 10:28:18 -08:00
losfair
d50f1cc95f
If/Else.
2019-02-27 23:38:45 +08:00
Syrus Akbary
c7f3666354
Merge pull request #220 from wasmerio/feature/better-debug
...
Added debug build
2019-02-26 15:42:29 -08:00
Syrus
f7197bf456
Added debug build
2019-02-26 15:39:54 -08:00
losfair
3c3c5db2e1
Native trampolines.
2019-02-26 20:56:10 +08:00
Syrus
e6d0f91832
Use blake2b SIMD version for increased performance
2019-02-26 01:12:34 -08:00
Lachlan Sneff
4f833876e0
Start work on object loader using llvm's RuntimeDyld api.
2019-02-25 18:08:06 -08:00
Syrus
2d49d58665
Use blake2b (simd) version instead of blake2
2019-02-25 17:43:25 -08:00
Syrus
e7d08712b5
Use blake2 hashing algorithm
2019-02-25 17:37:33 -08:00
Syrus
53c8603464
Updated crates version to 0.2.0
2019-02-25 13:33:33 -08:00
Syrus Akbary
09fe82862e
Merge pull request #211 from wasmerio/fix/error-display
...
Fix/error display
2019-02-25 12:35:16 -08:00
Syrus
f9c0e0c078
Fix formatting
2019-02-25 12:25:28 -08:00
Mackenzie Clark
3cfdaf3891
Merge branch 'master' into feature/emscripten-getcwd
2019-02-25 12:18:30 -08:00
Syrus Akbary
c5c967da00
Added parallel compilation ( #209 )
2019-02-25 12:03:48 -08:00
losfair
9d8c5a5c70
Add a note on incorrect code generation.
2019-02-25 23:57:12 +08:00
losfair
530294922a
Allow more registers to be used.
2019-02-25 23:55:27 +08:00
losfair
78fd995ad3
Fix argument passing at entry.
2019-02-25 23:38:33 +08:00
losfair
80812e3809
Implement native call & fix stack alignment.
2019-02-25 23:29:18 +08:00
losfair
2432a6c9b3
Fix function calls.
2019-02-25 22:47:27 +08:00
Brandon Fish
b008a054de
Fix C API to allow calling an exported func
2019-02-24 12:22:24 -06:00
losfair
dbebdf937f
Code generation for br_table.
2019-02-24 12:00:35 +08:00
Brandon Fish
1dfa106850
Add C API module import descriptors
2019-02-23 18:25:51 -06:00
Brandon Fish
17fe7bdaea
Add C API module export descriptors
2019-02-23 15:41:38 -06:00
losfair
09cbd4aeb0
Changed to using custom calling conventions; Implemented direct calls.
2019-02-24 00:52:32 +08:00
losfair
e9c0325784
Update dependencies
2019-02-24 00:51:47 +08:00
Andrew Cann
ed706133c4
fix stack overflow in Error's Display impl
2019-02-23 17:00:03 +08:00
Mackenzie Clark
82eef13f41
Create a grow error and refactor grow impl to return result ( #191 )
2019-02-22 22:18:59 -08:00
Lachlan Sneff
2a913f5663
Implement table, partial call_indirect
2019-02-22 17:34:55 -08:00
Mackenzie Clark
0c4aea2d84
Merge branch 'master' into feature/emscripten-getcwd
2019-02-22 16:54:19 -08:00
Lachlan Sneff
07c8975304
Fix clif backend
2019-02-22 16:20:26 -08:00
Mackenzie Clark
7fb7529b48
cargo fmt
2019-02-22 15:16:07 -08:00
Mackenzie Clark
70e0b8cee1
Merge branch 'master' into feature/emscripten-getcwd
2019-02-22 15:15:26 -08:00
Mackenzie Clark
b5056d676a
update wasm file
2019-02-22 15:07:55 -08:00
Mackenzie Clark
966be3ee8f
right to the out buffer that was passed in syscall183
2019-02-22 14:54:01 -08:00
Lachlan Sneff
df03d00e74
Merge upstream/master into feature/llvm-feature
2019-02-22 14:14:46 -08:00
Lachlan Sneff
0c19824425
Fix after merge
2019-02-22 14:07:03 -08:00
Lachlan Sneff
d9506ca5d5
Merge branch 'master' into feature/benchmarks
2019-02-22 13:32:09 -08:00
Lachlan Sneff
4042cff914
Change hashing algorithm from sha1 to meowhash
2019-02-22 13:02:28 -08:00
Mackenzie Clark
0f9369c67d
cargo fmt and better error message
2019-02-22 12:39:19 -08:00
Mackenzie Clark
ad3d361f76
add the syscall and create a test
2019-02-22 12:32:14 -08:00
Lachlan Sneff
687f70df89
Add validation benchmark
2019-02-22 12:31:41 -08:00
Syrus
16d62ace52
Fixed cache example (again)
2019-02-22 12:17:49 -08:00
Mackenzie Clark
70ba4ec466
Merge branch 'master' into feature/benchmarks
2019-02-22 12:14:11 -08:00
Lachlan Sneff
6d092dc121
Fix lint
2019-02-22 12:08:56 -08:00
Lachlan Sneff
17901f992a
Add benchmark runner and nginx compile vs. load bench
2019-02-22 12:07:07 -08:00
Syrus
b3dd47bce8
Fixed runtime example
2019-02-22 12:06:22 -08:00
Syrus
84042cecb3
Fixed wrong syntax
2019-02-22 12:00:30 -08:00
Syrus
fdb2a67579
Added cache into standalone app
2019-02-22 11:42:36 -08:00
Brandon Fish
c9969f269c
Use minimum limit as initial table size ( #196 )
2019-02-22 11:16:15 -08:00
Mackenzie Clark
a6d72bdec9
more emscripten stubs and urandom hack ( #199 )
2019-02-22 10:42:38 -08:00
Syrus Akbary
e9d72740c0
Merge pull request #197 from wasmerio/feature/c-api-module-instantiate
...
Add C API module_instantiate function
2019-02-22 09:58:49 -08:00
losfair
08a2ec82b3
Unary operators, comparison opcodes, loops, etc.
2019-02-23 01:54:16 +08:00
Lachlan Sneff
f1b190743b
Change file.write to file.write_all
2019-02-21 17:11:28 -08:00
Lachlan Sneff
199cabd0af
Add comment about serde feature
2019-02-21 17:09:32 -08:00
Lachlan Sneff
696fd8fce3
Update api again and change SerializedCache to Artifact
2019-02-21 17:07:04 -08:00
Lachlan Sneff
64eadad7fa
Fix review comments
2019-02-21 15:31:20 -08:00
Lachlan Sneff
244308374c
Fix formatting
2019-02-21 15:27:20 -08:00
Lachlan Sneff
f9d7d56195
Add documentation and make load safe
2019-02-21 14:00:33 -08:00
Lachlan Sneff
c78d4a8674
Fix test compilation 2
2019-02-21 12:55:03 -08:00
Lachlan Sneff
2234f357b7
Merge branch 'master' into feature/cache-rework
2019-02-21 11:54:57 -08:00
Lachlan Sneff
f18da0690e
Fix test compilation
2019-02-21 11:54:39 -08:00
Lachlan Sneff
7fa818ea06
Finalize new cache api
2019-02-21 11:47:28 -08:00
losfair
7c439932f1
Block and conditional branch.
2019-02-21 22:04:43 +08:00
losfair
63b3f41f05
Handle unreachable and fix return.
2019-02-21 21:14:10 +08:00
losfair
6f97ebd5f7
Remove a hack in parser.
2019-02-21 21:12:58 +08:00
Brandon Fish
ac57a1bc71
Add C API module_instantiate function
2019-02-20 23:08:23 -06:00
Lachlan Sneff
336c1d9c5f
Fix lint
2019-02-20 17:00:48 -08:00
Lachlan Sneff
9f40eedba8
Get caching working again
2019-02-20 16:41:41 -08:00
Mackenzie Clark
1a951a9abf
stub wasm32-unknown-emscripten target imports ( #193 )
2019-02-20 14:05:12 -08:00
Syrus Akbary
a418595f2f
Merge pull request #135 from wasmerio/feature/c-api
...
C API
2019-02-20 11:51:45 -08:00
Brandon Fish
b073145dbb
Clone import in instantiate to prevent import move
2019-02-20 09:52:42 -06:00
losfair
aaabbf169c
Operator::Br and control stack fixes
2019-02-20 23:21:33 +08:00
losfair
61c83507a4
Control frames, jumps & stack unwinding.
2019-02-20 22:56:32 +08:00
Jordan Danford
64519b1581
Fix formatting and grammar in documentation
2019-02-19 17:01:44 -07:00
Lachlan Sneff
82eea00a02
Saved
2019-02-19 15:36:22 -08:00
Lachlan Sneff
3c7dc200fa
close to working
2019-02-19 09:58:01 -08:00
losfair
93d2713bde
Operators.
2019-02-19 20:25:09 +08:00
losfair
5583e96d96
Mitigate a bug that causes incorrect code generation.
...
Still need to figure out why R8 and higher registers don't work.
2019-02-19 19:19:40 +08:00
Brandon Fish
d2f3023191
Allow specifying optional max value in limits
2019-02-19 00:05:08 -06:00
Brandon Fish
380d766943
Convert from Box into/from raw to pointer ref-deref to fix free issue
2019-02-18 23:30:08 -06:00
Lachlan Sneff
e381bbd07b
Use ModuleInfo instead of ModuleInner when possible
2019-02-18 11:56:20 -08:00
Brandon Fish
2ed6e82354
Merge branch 'master' into feature/c-api
2019-02-17 17:20:47 -06:00
Brandon Fish
123d55cb4a
Remove commented out code, cleanup build warnings
2019-02-17 17:10:15 -06:00
Brandon Fish
ee81560e06
Cleanup tests
2019-02-17 16:51:59 -06:00
Brandon Fish
a77d1be983
Remove unused API functions
2019-02-17 14:48:30 -06:00
Brandon Fish
36767e0bd6
Move ctx pointer to first parameter to fix test
2019-02-17 14:39:26 -06:00
Brandon Fish
7bb947aba7
Add func signature lookup functions
2019-02-17 14:12:05 -06:00
David McNeil
a9b1c6c85e
Fix emscripten environment ( #172 )
...
Dynamically determine abortOnCannotGrowMemory and add
_emscripten_get_heap_size and _emscripten_resize_heap
2019-02-16 15:01:01 -07:00
Brandon Fish
56079ad589
Add compile Module function
2019-02-15 19:47:00 -06:00
Brandon Fish
9ee86138b9
Impl Error for CallError
2019-02-15 19:16:19 -06:00
Brandon Fish
768a2fae18
Merge branch 'master' into feature/c-api
2019-02-15 19:12:30 -06:00
Lachlan Sneff
108973dabe
Start producing object files with llvm
2019-02-15 16:02:20 -08:00
Christopher Serr
cb29261ec7
Use repr(transparent) for single element structs ( #187 )
...
The ABI of aggregates such as single element structs is not required to
be the same as the single elements themselves. This is especially true
for f64 vs. #[repr(c)] struct F(f64); on Windows. Therefore the macro
has been tweaked so S1 uses repr(transparent) which is made for exactly
for this use case.
Closes #183
2019-02-15 15:11:06 -08:00
Mackenzie Clark
2d2d708500
Validate descriptor max on creating new table or memory ( #186 )
2019-02-15 13:14:42 -08:00
Mackenzie Clark
b68b109b7d
Implement error for remaining errors and the amalgamation error ( #184 )
2019-02-15 08:15:57 -08:00
Brandon Fish
3ebb80e50e
Update imports and add func_new
2019-02-15 09:40:28 -06:00
Mackenzie Clark
39ef47ebb1
Implement Error for CompilerError ( #181 )
2019-02-14 21:08:35 -08:00
Mackenzie Clark
09ba27390c
Implement Error for Creation Error ( #180 )
2019-02-14 19:22:19 -08:00
Mackenzie Clark
6e87676160
Impl error for link error ( #182 )
2019-02-14 18:40:52 -08:00
Mackenzie Clark
24d028e2a2
impl error trait for ResolveError ( #179 )
2019-02-14 18:19:18 -08:00
Lachlan Sneff
73b4f7d337
Implement memory and global operations
2019-02-14 18:08:20 -08:00
Lachlan Sneff
2d87f64f82
Merge master into feature/llvm-backend
2019-02-14 15:47:28 -08:00
Lachlan Sneff
8827830aba
implement load* and store* instructions
2019-02-14 15:13:58 -08:00
Mackenzie Clark
0c7532b1ba
remove unnecessary print statements ( #177 )
2019-02-14 11:11:35 -08:00
losfair
bb52a4e6eb
Now we can run add
!
2019-02-15 02:21:52 +08:00
losfair
1526d35872
Emit a Return opcode if the last one is not return.
2019-02-15 02:21:04 +08:00
Mackenzie Clark
6a1fdb7f91
add windows exception handling in C ( #175 )
2019-02-14 09:58:33 -08:00
Brandon Fish
bfd5e21605
Add export_name and export_func
2019-02-14 00:00:39 -06:00
Brandon Fish
93979aeae2
Add get exports from instance
2019-02-13 20:02:11 -06:00
losfair
8d8db4aa09
Starting integration.
2019-02-14 00:53:36 +08:00
losfair
7df7204e4b
codegen: More opcodes
2019-02-14 00:53:06 +08:00
losfair
43df3dd546
Use System V calling convention and implement a few opcodes.
2019-02-13 20:04:10 +08:00
losfair
a69c5b4a14
stack: Helper functions and unified return types
2019-02-13 20:03:54 +08:00
Lachlan Sneff
2572a0259b
Get control flow working (fingers crossed)
2019-02-12 18:02:00 -08:00
Syrus
b6416068a8
Use vec.push instead of .insert for vmctx arg
2019-02-12 11:17:09 -08:00
Syrus
b7c3cc09d1
Fixed typed func implementation
2019-02-12 11:14:20 -08:00
Syrus
44d1a0d1f9
Fixed debug function context position
2019-02-12 10:49:43 -08:00
Syrus
f52c4ce5cc
Merge branch 'master' into feature/ctx-first-arg
2019-02-12 10:28:25 -08:00
Syrus
c40195cf77
Fixed spectests
2019-02-12 10:04:11 -08:00
losfair
4ebb22f8bc
Calling conventions, value stack, and runtime stack layout.
2019-02-12 23:15:57 +08:00
Brandon Fish
7f5ca34138
Merge branch 'master' into feature/c-api
2019-02-11 23:17:26 -06:00
Brandon Fish
27cbfc0b0b
Add documentation to API functions
2019-02-11 23:14:32 -06:00
Lachlan Sneff
5ee19e55a5
Add some branching instructions
2019-02-11 19:34:04 -08:00
Brandon Fish
34c45aee3d
Update last error for every error result
2019-02-11 20:08:54 -06:00
Brandon Fish
019ef9ea01
Consolidate result type to one enum
2019-02-11 19:07:28 -06:00
losfair
2fbb5e3332
Codegen backend for x64.
2019-02-12 00:52:17 +08:00
losfair
ffc1bde3d8
Cleanup & add imports.
2019-02-12 00:52:01 +08:00
losfair
bbb27bedbe
Code generation framework.
2019-02-12 00:51:49 +08:00
losfair
af19f5c097
Update dependencies.
2019-02-12 00:51:26 +08:00
losfair
f735471bac
Merge remote-tracking branch 'private/master' into feature/dynasm-backend
2019-02-11 18:38:00 +08:00
Brandon Fish
b70e319f5c
Add initial error messaging
2019-02-10 17:57:23 -06:00
Brandon Fish
66bf13c9dd
Add memory data function
2019-02-10 15:20:35 -06:00
Brandon Fish
a502da58e3
Fix import object destroy
2019-02-10 14:27:08 -06:00
Brandon Fish
7ef472dae2
Add instance context memory
2019-02-10 14:24:36 -06:00
Brandon Fish
0cfe864fe6
Add Memory data length
2019-02-10 14:14:42 -06:00
Syrus
4311a37def
Fixed simple spectests example compilation
2019-02-09 20:13:58 -08:00
Brandon Fish
2fa9cec0ed
Add include guard
2019-02-09 18:07:05 -06:00
Lachlan Sneff
327e3a4a1a
Implement many wasm instructions
2019-02-09 15:53:40 -08:00
Brandon Fish
a0288c87ac
Add Memory Grow C API
2019-02-09 17:53:03 -06:00
Brandon Fish
94c5acedbf
Add basic Global API
2019-02-09 17:39:15 -06:00
Syrus
227d5e24cf
Moved ctx to first argument in Cranelift backend
2019-02-09 14:18:53 -08:00
Syrus
6c7fd55b87
Moved ctx to be the first argument in emscripten
2019-02-09 13:58:18 -08:00
Syrus
393b7dbdf3
Moved ctx in func macro to be first arg
2019-02-09 13:33:22 -08:00
Mackenzie Clark
4ef7dc339c
optimize imports ( #170 )
2019-02-09 13:31:28 -08:00
Brandon Fish
8364c39b4c
Add Table grow function
2019-02-09 13:58:50 -06:00
Brandon Fish
4e5e525626
Add basic Table functions
2019-02-09 13:37:07 -06:00
Brandon Fish
c3707efa08
Update for merge from master
2019-02-09 13:09:54 -06:00
Brandon Fish
bda6451fb6
Merge branch 'master' into feature/c-api
2019-02-09 13:08:30 -06:00
Mackenzie Clark
e7c3b99ba9
add lua integration test ( #109 )
2019-02-08 17:47:51 -08:00
Lachlan Sneff
aa90a33501
Make module info store FuncSig, not Arc<FuncSig>
2019-02-08 14:19:58 -08:00
Mackenzie Clark
9a56680281
fix windows linking and appveyor build ( #166 )
2019-02-08 13:51:29 -08:00
Lachlan Sneff
1886b3d3c1
Naive short circuiting implementation for user panics and results. ( #167 )
...
* Add panic and result catching
* exit process on panic and user runtime error
* Complete initial implementation
2019-02-08 13:08:03 -08:00
Lachlan Sneff
4e1bc483a8
Fix emscripten setup, nginx works ( #165 )
...
* Fix emscripten setup, nginx works
* Remove commented-out code
* Re-enable nginx integration test
2019-02-08 10:55:32 -08:00
Mackenzie Clark
351b4feeeb
implement with_size_protect ( #163 )
...
* implement with_size_protect
* no more conditional compilation
2019-02-08 10:32:20 -08:00
losfair
9649219578
Initial work on WebAssembly parser for Dynasm backend.
2019-02-08 23:56:14 +08:00
Mackenzie Clark
46ac4e9e1a
reorganize signal module and leave stubs in windows ( #162 )
2019-02-07 17:08:42 -08:00
Mackenzie Clark
9719781eee
create platform mods for syscalls and stub for windows ( #161 )
...
* create platform mods for syscalls and stub for windows
* missing constants and duplicate use statements
2019-02-07 16:56:44 -08:00
Mackenzie Clark
f8e2b25137
consolidate shared functions and optimize use statements ( #159 )
2019-02-07 15:24:22 -08:00
Mackenzie Clark
25d438f346
create an alias for pid_t which does not exist on libc windows ( #160 )
2019-02-07 15:12:27 -08:00
Lachlan Sneff
8d2c1956d7
Fix runtime error catching ( #157 )
2019-02-07 14:44:28 -08:00
Mackenzie Clark
ea2bd80089
refactor getenv for windows ( #156 )
2019-02-07 14:23:13 -08:00
Brandon Fish
7574652bb1
Re-enable all passing emtests for CI
2019-02-07 14:55:06 -06:00
Syrus Akbary
1c1318623e
Merge pull request #155 from wasmerio/fix/signature-index-wrong-map
...
Fix signature index issue
2019-02-07 11:58:11 -08:00
Syrus
14806cb604
Fixed formatting and removed print debug statement
2019-02-07 11:37:15 -08:00
Mackenzie Clark
ce03e4464c
fill unsetenv for windows ( #150 )
...
* fill unsetenv
* update usage of read_string_from_wasm
* convert helper to return String
* correct usage of helper fn, cargo fmt, and check in lock file change
2019-02-07 10:51:19 -08:00
Lachlan Sneff
dbea7b3abe
Merge branch 'master' into fix/signature-index-wrong-map
2019-02-07 10:46:35 -08:00
Lachlan Sneff
e147983ece
fix
2019-02-07 10:45:48 -08:00
Mackenzie Clark
663de770bf
stub emscripten env calls for windows ( #151 )
2019-02-07 10:16:55 -08:00
Mackenzie Clark
4ab8bd69be
install errno on all platforms ( #152 )
2019-02-07 10:02:41 -08:00
Mackenzie Clark
bca702794c
assign to the protect enum ( #153 )
2019-02-07 09:04:57 -08:00
Mackenzie Clark
83df3ad35f
fix putenv and setenv for windows ( #140 )
2019-02-06 18:57:11 -08:00
Mackenzie Clark
ac286b708b
create the windows io mod and link printf ( #144 )
2019-02-06 17:56:01 -08:00
Mackenzie Clark
0a7b9b26b8
let the compiler deduce types in syscalls ( #145 )
2019-02-06 17:06:05 -08:00
Mackenzie Clark
f13a45a5bc
link time function and create alias for clockid_t ( #146 )
2019-02-06 16:40:02 -08:00
Lachlan Sneff
8fe9b7eac2
Add caching. ( #134 )
...
* Allow a module to have a different signature registry than the process-specific
* Add core ability to build compiled code caches
* Remove timing printouts
* Serialize/Deserialize memories to reduce copies
* Work more on api
* Relocate local functions relatively before external functions
* Fix incorrect definition in test
* merge errors caused by merge
* Fix emscripten compile
* Fix review comments
2019-02-06 16:26:45 -08:00
Lachlan Sneff
2f2f86a4de
Add feature flag to output debug information while running wasm ( #147 )
...
* Generate debug info during execution
* feature cfg debug output
2019-02-06 15:43:27 -08:00
Brandon Fish
2b55606d3c
Add at_init emscripten_environ_constructor
2019-02-06 00:11:31 -06:00
Brandon Fish
b86acab3e4
Fix debug statement
2019-02-05 23:48:05 -06:00
Brandon Fish
3cd81d4119
Fix lua emscripten imports
2019-02-05 23:39:12 -06:00
Brandon Fish
9d16faab9d
Make memalign optional if the wasm doesn't export it
2019-02-05 23:24:07 -06:00
Syrus Akbary
0f0e1d0aa5
Merge branch 'master' into feature/em-missing-imports
2019-02-05 17:30:38 -07:00
Mackenzie Clark
7bd609fd58
memory fixes for windows ( #138 )
2019-02-05 16:07:55 -08:00
Brandon Fish
c11f18b09c
Update signatures and add missing imports
2019-02-05 17:25:51 -06:00
Lachlan Sneff
c10383c382
Fix example
2019-02-05 12:01:31 -08:00
Lachlan Sneff
271e68d88b
Run fmt
2019-02-05 11:56:36 -08:00
Lachlan Sneff
308d9dde3f
Fix compilation
2019-02-05 11:54:30 -08:00
Lachlan Sneff
cee248ae89
Update emscripten memory macro
2019-02-05 10:35:15 -08:00
Lachlan Sneff
8a8290b155
Add touch-ups to new memory api
2019-02-05 10:20:04 -08:00
Lachlan Sneff
f75006c062
Merge branch 'fix/emscripten-translate' of github.com:wasmerio/wasmer into fix/emscripten-translate
2019-02-04 23:08:46 -08:00
Lachlan Sneff
00db5410c5
Change memory access api again
2019-02-04 23:07:58 -08:00
Brandon Fish
309246e0d6
Add validate function and test
2019-02-05 00:01:01 -06:00
Brandon Fish
8d8dea7ec8
Implement basic C API memory functions
2019-02-04 21:46:47 -06:00
Brandon Fish
2defd27fac
Also generate C++ bindings
2019-02-04 19:54:12 -06:00
Brandon Fish
6ed72a50ce
Add instance_destroy back to test
2019-02-04 19:49:28 -06:00
Brandon Fish
1322446f04
Fix compilation
2019-02-04 18:46:10 -06:00