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WebAssembly Micro Runtime (WAMR)
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Marcin Kolny efa8019bdb
Merge dev/simd for fast-interp (#4131) 
* Implement the first few SIMD opcodes for fast interpreter (v128.const, v128.any_true) (#3818)

Tested on the following code:
```
(module
  (import "wasi_snapshot_preview1" "proc_exit" (func $proc_exit (param i32)))
  (memory (export "memory") 1)

  ;; WASI entry point
  (func $main (export "_start")
    v128.const i8x16 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0
    v128.any_true
    if
      unreachable
    end
    
    v128.const i8x16 0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15     
    v128.any_true
    i32.const 0
    i32.eq
    if
      unreachable
    end

    i32.const 0
    call $proc_exit
  )
)
```

* implement POP_V128()

This is to simplify the simd implementation for fast interpreter

* Add all SIMD operations into wasm_interp_fast switch

* Add V128 comparison operations

Tested using
```
(module
  (import "wasi_snapshot_preview1" "proc_exit" (func $proc_exit (param i32)))

  (memory (export "memory") 1)

  (func $assert_true (param v128)
    local.get 0
    v128.any_true
    i32.eqz
    if
      unreachable
    end
  )

  (func $main (export "_start")
    ;; Test v128.not
    v128.const i8x16 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0
    v128.not
    v128.const i8x16 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255
    i8x16.eq
    call $assert_true

    ;; Test v128.and
    v128.const i8x16 255 255 255 255 0 0 0 0 255 255 255 255 0 0 0 0
    v128.const i8x16 255 255 0 0 255 255 0 0 255 255 0 0 255 255 0 0
    v128.and
    v128.const i8x16 255 255 0 0 0 0 0 0 255 255 0 0 0 0 0 0
    i8x16.eq
    call $assert_true

    ;; Test v128.andnot
    v128.const i8x16 255 255 255 255 0 0 0 0 255 255 255 255 0 0 0 0
    v128.const i8x16 255 255 0 0 255 255 0 0 255 255 0 0 255 255 0 0
    v128.andnot
    v128.const i8x16 0 0 255 255 0 0 0 0 0 0 255 255 0 0 0 0
    i8x16.eq
    call $assert_true

    ;; Test v128.or
    v128.const i8x16 255 255 0 0 0 0 255 255 255 255 0 0 0 0 255 0
    v128.const i8x16 0 0 255 255 255 255 0 0 0 0 255 255 255 255 0 0
    v128.or
    v128.const i8x16 255 255 255 255 255 255 255 255 255 255 255 255 255 255 255 0
    i8x16.eq
    call $assert_true

    ;; Test v128.xor
    v128.const i8x16 255 255 0 0 255 255 0 0 255 255 0 0 255 255 0 0
    v128.const i8x16 255 255 255 255 0 0 0 0 255 255 255 255 0 0 0 0
    v128.xor
    v128.const i8x16 0 0 255 255 255 255 0 0 0 0 255 255 255 255 0 0
    i8x16.eq
    call $assert_true

    i32.const 0
    call $proc_exit
  )
)
```

* Add first NEON SIMD opcode implementations to fast interpreter (#3859)

Add some implementations of SIMD opcodes using NEON instructions.
Tested using:
```wast
(module
  (import "wasi_snapshot_preview1" "proc_exit" (func $proc_exit (param i32)))
  (memory (export "memory") 1)

  (func $assert_true (param v128)
    local.get 0
    v128.any_true 
    i32.eqz
    if
      unreachable
    end
  )
  (func $main (export "_start")
    i32.const 0
    i32.const 32
    memory.grow
    drop

    i32.const 0
    v128.const i8x16 0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15
    v128.store

    i32.const 0
    v128.load

    v128.const i8x16 0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15
    i8x16.eq
    call $assert_true

    i32.const 16
    v128.const i8x16 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31
    v128.store

    i32.const 16
    v128.load
    v128.const i8x16 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31
    i8x16.eq
    call $assert_true

    i32.const 0
    v128.load
    v128.const i8x16 0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15
    i8x16.eq
    call $assert_true
    drop

    i32.const 0
    i32.const 1
    memory.grow
    drop

    i32.const 0
    i64.const 0x7F80FF017E02FE80
    i64.store

    i32.const 0
    v128.load8x8_s

    v128.const i16x8 127 -128 -1 1 126 2 -2 -128

    i16x8.eq
    call $assert_true

    i32.const 0
    i64.const 0x80FE027E01FF807F
    i64.store

    i32.const 0
    v128.load8x8_u

    v128.const i16x8 128 254 2 126 1 255 128 127

    i16x8.eq
    call $assert_true

    i32.const 0
    i64.const 0x8000FFFE7FFF0001
    i64.store

    i32.const 0
    v128.load16x4_s

    v128.const i32x4 -32768 -2 32767 1

    i32x4.eq
    call $assert_true

    i32.const 0
    i64.const 0x8000FFFE7FFF0001 
    i64.store

    i32.const 0
    v128.load16x4_u

    v128.const i32x4 32768 65534 32767 1   

    i32x4.eq
    call $assert_true

    i32.const 0
    i64.const 0x8000000000000001
    i64.store

    i32.const 0
    v128.load32x2_s

    v128.const i64x2 -2147483648 1 

    i64x2.eq
    call $assert_true

    i32.const 0
    i64.const 0x8000000000000001
    i64.store

    i32.const 0
    v128.load32x2_u

    v128.const i64x2 2147483648 1

    i64x2.eq
    call $assert_true

    call $proc_exit
  )
)
```

* Emit imm for lane extract and replace (#3906)

* Fix replacement value not being correct (#3919)

* Implement load lanes opcodes for wasm (#3942)

* Implement final SIMD opcodes: store lane (#4001)

* Fix load/store (#4054)

* Correctly use unsigned functions  (#4055)

* implement local and function calls for v128 in the fast interpreter

* Fix splat opcodes, add V128 handling in preserve_referenced_local and reserve_block_ret

* Fix incorrect memory overflow values + SIMD ifdefs

* Fix load/load_splat macros

* correct endif wasm loader

* Update core/iwasm/interpreter/wasm_opcode.h

* Fix spec tests when WASM_CPU_SUPPORTS_UNALIGNED_ADDR_ACCESS is 0

* Resolve merge conflicts arising from main -> dev/simd_for_interp and implement fast interpreter const offset loader support for V128

* Enable SIMDe tests on CI

* Document WAMR_BUILD_LIB_SIMDE

---------

Co-authored-by: James Marsh <mrshnja@amazon.co.uk>
Co-authored-by: jammar1 <108334558+jammar1@users.noreply.github.com>
Co-authored-by: Maks Litskevich <makslit@amazon.com>
Co-authored-by: Marcin Kolny <marcin.kolny@gmail.com>
Co-authored-by: Wenyong Huang <wenyong.huang@intel.com>
2025-03-20 14:23:20 +08:00
.devcontainer Update Docker image for latest version of external libraries & tools (#2374) 2023-07-24 17:43:13 +08:00
.github Merge dev/simd for fast-interp (#4131) 2025-03-20 14:23:20 +08:00
build-scripts Merge dev/simd for fast-interp (#4131) 2025-03-20 14:23:20 +08:00
ci Exclude fuzz test python and npm packages in scoreboard scan (#3871) 2024-10-23 14:48:15 +08:00
core Merge dev/simd for fast-interp (#4131) 2025-03-20 14:23:20 +08:00
doc Merge dev/simd for fast-interp (#4131) 2025-03-20 14:23:20 +08:00
language-bindings Change WASM_ANYREF to WASM_EXTERNREF (#3426) 2024-05-14 11:08:16 +08:00
product-mini include bh_platform.h (#4135) 2025-03-17 14:22:46 +08:00
samples fix: correct typos and improve comments across multiple files by codespell (#4116) 2025-03-07 08:21:54 +08:00
test-tools avoid Windows perform newline translation (#4128) 2025-03-07 08:22:12 +08:00
tests Merge dev/simd for fast-interp (#4131) 2025-03-20 14:23:20 +08:00
wamr-compiler Refactor versioning documentation and adopt semantic versioning guidelines 2025-02-05 10:31:20 +00:00
wamr-sdk Separate app-manager and app-framework from WAMR (#3129) 2024-02-20 18:12:36 +08:00
zephyr zephyr: add module.yml and fix riscv compile error (#763) 2021-09-24 17:43:02 +08:00
.clang-format Customize clang-format coding styles based on Mozilla template (#770) 2021-10-06 09:54:36 +08:00
.clang-tidy Customize clang-format coding styles based on Mozilla template (#770) 2021-10-06 09:54:36 +08:00
.dockerignore wasi-nn: Add wasmedge-wasinn-example as smoke test (#3554) 2024-06-24 12:03:08 +08:00
.gitignore Ignore temporary file from aider (#3787) 2024-09-13 09:43:44 +08:00
ADOPTERS.md doc: Add ADOPTERS.md (#3324) 2024-04-24 16:17:00 +08:00
ATTRIBUTIONS.md Fix some compile warnings and typos (#3854) 2024-10-15 16:04:58 +08:00
CMakeLists.txt Merge pull request #4033 from g0djan/godjan/iterate_callstack 2025-03-11 10:31:56 +08:00
CODE_OF_CONDUCT.md Restore some files and fix minor issues of SGX platform (#144) 2019-11-21 10:30:57 +08:00
CODEOWNERS Add Tianlong into code owners (#3970) 2024-12-24 20:19:40 +08:00
CONTRIBUTING.md fix: correct typos and improve comments across multiple files by codespell (#4116) 2025-03-07 08:21:54 +08:00
idf_component.yml Update esp-idf platform support in main (#3304) 2024-04-11 19:46:34 +08:00
LICENSE Remove unused files and update license header of some files (#138) 2019-11-11 20:38:49 -06:00
ORG_CODE_OF_CONDUCT.md Recover files deleted accidentally in last commit (#143) 2019-11-20 21:31:43 +08:00
README.md Update README.md to clarify Windows toolchain support and ESP-IDF reference (#3917) 2024-11-27 19:06:22 +08:00
RELEASE_NOTES.md Update release notes and update version to 2.2.0 (#3863) 2024-10-22 09:34:03 +08:00
SConscript Add ia32 support and fix compiling issue for RT-Thread (#730) 2021-09-07 10:20:14 +08:00
SECURITY.md Refer to BA security policy (#635) 2021-05-19 19:59:23 +08:00
TSC_Charter.md Implement most missing wasm-c-api APIs (#303) (#676) 2021-07-28 21:53:37 +08:00

README.md

WebAssembly Micro Runtime

A Bytecode Alliance project

Guide  Website  Chat

Build WAMR | Build AOT Compiler | Embed WAMR | Export Native API | Build Wasm Apps | Samples

WebAssembly Micro Runtime (WAMR) is a lightweight standalone WebAssembly (Wasm) runtime with small footprint, high performance and highly configurable features for applications cross from embedded, IoT, edge to Trusted Execution Environment (TEE), smart contract, cloud native and so on. It includes a few parts as below:

  • VMcore: A set of runtime libraries for loading and running Wasm modules. It supports rich running modes including interpreter, Ahead-of-Time compilation(AoT) and Just-in-Time compilation (JIT). WAMR supports two JIT tiers - Fast JIT, LLVM JIT, and dynamic tier-up from Fast JIT to LLVM JIT.
  • iwasm: The executable binary built with WAMR VMcore which supports WASI and command line interface.
  • wamrc: The AOT compiler to compile Wasm file into AOT file
  • Useful components and tools for building real solutions with WAMR vmcore:
    • App-framework: A framework for supporting APIs for the Wasm applications
    • App-manager: A framework for dynamical loading the Wasm module remotely
    • WAMR-IDE: An experimental VSCode extension for developping WebAssembly applications with C/C++

Key features

Wasm post-MVP features

Supported architectures and platforms

The WAMR VMcore supports the following architectures:

  • X86-64, X86-32
  • ARM, THUMB (ARMV7 Cortex-M7 and Cortex-A15 are tested)
  • AArch64 (Cortex-A57 and Cortex-A53 are tested)
  • RISCV64, RISCV32 (RISC-V LP64 and RISC-V LP64D are tested)
  • XTENSA, MIPS, ARC

The following platforms are supported, click each link below for how to build iwasm on that platform. Refer to WAMR porting guide for how to port WAMR to a new platform.

Getting started

Performance and memory

Project Technical Steering Committee

The WAMR PTSC Charter governs the operations of the project TSC. The current TSC members:

License

WAMR uses the same license as LLVM: the Apache 2.0 license with the LLVM exception. See the LICENSE file for details. This license allows you to freely use, modify, distribute and sell your own products based on WAMR. Any contributions you make will be under the same license.

More resources