framebuffer wip

Cargo.lock

@@ -90,7 +90,7 @@ dependencies = [
  "clap 2.33.0 (registry+https://github.com/rust-lang/crates.io-index)",
  "env_logger 0.6.2 (registry+https://github.com/rust-lang/crates.io-index)",
  "fxhash 0.2.1 (registry+https://github.com/rust-lang/crates.io-index)",
- "lazy_static 1.3.0 (registry+https://github.com/rust-lang/crates.io-index)",
+ "lazy_static 1.4.0 (registry+https://github.com/rust-lang/crates.io-index)",
  "log 0.4.8 (registry+https://github.com/rust-lang/crates.io-index)",
  "peeking_take_while 0.1.2 (registry+https://github.com/rust-lang/crates.io-index)",
  "proc-macro2 0.4.30 (registry+https://github.com/rust-lang/crates.io-index)",
@@ -120,7 +120,7 @@ name = "bstr"
 version = "0.2.7"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
- "lazy_static 1.3.0 (registry+https://github.com/rust-lang/crates.io-index)",
+ "lazy_static 1.4.0 (registry+https://github.com/rust-lang/crates.io-index)",
  "memchr 2.2.1 (registry+https://github.com/rust-lang/crates.io-index)",
  "regex-automata 0.1.8 (registry+https://github.com/rust-lang/crates.io-index)",
  "serde 1.0.99 (registry+https://github.com/rust-lang/crates.io-index)",
@@ -136,7 +136,7 @@ name = "c2-chacha"
 version = "0.2.2"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
- "lazy_static 1.3.0 (registry+https://github.com/rust-lang/crates.io-index)",
+ "lazy_static 1.4.0 (registry+https://github.com/rust-lang/crates.io-index)",
  "ppv-lite86 0.2.5 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
@@ -260,7 +260,7 @@ name = "colored"
 version = "1.8.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
- "lazy_static 1.3.0 (registry+https://github.com/rust-lang/crates.io-index)",
+ "lazy_static 1.4.0 (registry+https://github.com/rust-lang/crates.io-index)",
  "winconsole 0.10.0 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
@@ -325,7 +325,7 @@ dependencies = [
  "criterion-plot 0.3.1 (registry+https://github.com/rust-lang/crates.io-index)",
  "csv 1.1.1 (registry+https://github.com/rust-lang/crates.io-index)",
  "itertools 0.8.0 (registry+https://github.com/rust-lang/crates.io-index)",
- "lazy_static 1.3.0 (registry+https://github.com/rust-lang/crates.io-index)",
+ "lazy_static 1.4.0 (registry+https://github.com/rust-lang/crates.io-index)",
  "libc 0.2.62 (registry+https://github.com/rust-lang/crates.io-index)",
  "num-traits 0.2.8 (registry+https://github.com/rust-lang/crates.io-index)",
  "rand_core 0.3.1 (registry+https://github.com/rust-lang/crates.io-index)",
@@ -367,7 +367,7 @@ dependencies = [
  "arrayvec 0.4.11 (registry+https://github.com/rust-lang/crates.io-index)",
  "cfg-if 0.1.9 (registry+https://github.com/rust-lang/crates.io-index)",
  "crossbeam-utils 0.6.6 (registry+https://github.com/rust-lang/crates.io-index)",
- "lazy_static 1.3.0 (registry+https://github.com/rust-lang/crates.io-index)",
+ "lazy_static 1.4.0 (registry+https://github.com/rust-lang/crates.io-index)",
  "memoffset 0.5.1 (registry+https://github.com/rust-lang/crates.io-index)",
  "scopeguard 1.0.0 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
@@ -386,7 +386,7 @@ version = "0.6.6"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
  "cfg-if 0.1.9 (registry+https://github.com/rust-lang/crates.io-index)",
- "lazy_static 1.3.0 (registry+https://github.com/rust-lang/crates.io-index)",
+ "lazy_static 1.4.0 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
 [[package]]
@@ -424,7 +424,7 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
  "bitflags 1.1.0 (registry+https://github.com/rust-lang/crates.io-index)",
  "byteorder 1.3.2 (registry+https://github.com/rust-lang/crates.io-index)",
- "lazy_static 1.3.0 (registry+https://github.com/rust-lang/crates.io-index)",
+ "lazy_static 1.4.0 (registry+https://github.com/rust-lang/crates.io-index)",
  "owning_ref 0.3.3 (registry+https://github.com/rust-lang/crates.io-index)",
  "proc-macro2 0.4.30 (registry+https://github.com/rust-lang/crates.io-index)",
  "quote 0.6.13 (registry+https://github.com/rust-lang/crates.io-index)",
@@ -529,6 +529,15 @@ name = "gcc"
 version = "0.3.55"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 
+[[package]]
+name = "gdi32-sys"
+version = "0.1.2"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+dependencies = [
+ "winapi 0.2.8 (registry+https://github.com/rust-lang/crates.io-index)",
+ "winapi-build 0.1.1 (registry+https://github.com/rust-lang/crates.io-index)",
+]
+
 [[package]]
 name = "generational-arena"
 version = "0.2.2"
@@ -612,7 +621,7 @@ dependencies = [
  "either 1.5.2 (registry+https://github.com/rust-lang/crates.io-index)",
  "enum-methods 0.0.8 (registry+https://github.com/rust-lang/crates.io-index)",
  "inkwell_internal_macros 0.1.0 (git+https://github.com/wasmerio/inkwell?branch=llvm8-0)",
- "lazy_static 1.3.0 (registry+https://github.com/rust-lang/crates.io-index)",
+ "lazy_static 1.4.0 (registry+https://github.com/rust-lang/crates.io-index)",
  "libc 0.2.62 (registry+https://github.com/rust-lang/crates.io-index)",
  "llvm-sys 80.1.1 (registry+https://github.com/rust-lang/crates.io-index)",
  "regex 1.2.1 (registry+https://github.com/rust-lang/crates.io-index)",
@@ -657,7 +666,12 @@ dependencies = [
 
 [[package]]
 name = "lazy_static"
-version = "1.3.0"
+version = "0.2.11"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+
+[[package]]
+name = "lazy_static"
+version = "1.4.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 
 [[package]]
@@ -680,7 +694,7 @@ version = "80.1.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
  "cc 1.0.40 (registry+https://github.com/rust-lang/crates.io-index)",
- "lazy_static 1.3.0 (registry+https://github.com/rust-lang/crates.io-index)",
+ "lazy_static 1.4.0 (registry+https://github.com/rust-lang/crates.io-index)",
  "libc 0.2.62 (registry+https://github.com/rust-lang/crates.io-index)",
  "regex 1.2.1 (registry+https://github.com/rust-lang/crates.io-index)",
  "semver 0.9.0 (registry+https://github.com/rust-lang/crates.io-index)",
@@ -736,6 +750,21 @@ dependencies = [
  "rustc_version 0.2.3 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
+[[package]]
+name = "minifb"
+version = "0.11.2"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+dependencies = [
+ "cc 1.0.40 (registry+https://github.com/rust-lang/crates.io-index)",
+ "gdi32-sys 0.1.2 (registry+https://github.com/rust-lang/crates.io-index)",
+ "kernel32-sys 0.2.2 (registry+https://github.com/rust-lang/crates.io-index)",
+ "orbclient 0.3.27 (registry+https://github.com/rust-lang/crates.io-index)",
+ "time 0.1.42 (registry+https://github.com/rust-lang/crates.io-index)",
+ "user32-sys 0.1.3 (registry+https://github.com/rust-lang/crates.io-index)",
+ "winapi 0.2.8 (registry+https://github.com/rust-lang/crates.io-index)",
+ "x11-dl 2.14.0 (registry+https://github.com/rust-lang/crates.io-index)",
+]
+
 [[package]]
 name = "nix"
 version = "0.15.0"
@@ -762,6 +791,35 @@ dependencies = [
  "version_check 0.1.5 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
+[[package]]
+name = "num"
+version = "0.1.42"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+dependencies = [
+ "num-integer 0.1.41 (registry+https://github.com/rust-lang/crates.io-index)",
+ "num-iter 0.1.39 (registry+https://github.com/rust-lang/crates.io-index)",
+ "num-traits 0.2.8 (registry+https://github.com/rust-lang/crates.io-index)",
+]
+
+[[package]]
+name = "num-integer"
+version = "0.1.41"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+dependencies = [
+ "autocfg 0.1.6 (registry+https://github.com/rust-lang/crates.io-index)",
+ "num-traits 0.2.8 (registry+https://github.com/rust-lang/crates.io-index)",
+]
+
+[[package]]
+name = "num-iter"
+version = "0.1.39"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+dependencies = [
+ "autocfg 0.1.6 (registry+https://github.com/rust-lang/crates.io-index)",
+ "num-integer 0.1.41 (registry+https://github.com/rust-lang/crates.io-index)",
+ "num-traits 0.2.8 (registry+https://github.com/rust-lang/crates.io-index)",
+]
+
 [[package]]
 name = "num-traits"
 version = "0.1.43"
@@ -786,6 +844,15 @@ dependencies = [
  "libc 0.2.62 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
+[[package]]
+name = "orbclient"
+version = "0.3.27"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+dependencies = [
+ "redox_syscall 0.1.56 (registry+https://github.com/rust-lang/crates.io-index)",
+ "sdl2 0.32.2 (registry+https://github.com/rust-lang/crates.io-index)",
+]
+
 [[package]]
 name = "owning_ref"
 version = "0.3.3"
@@ -833,6 +900,11 @@ name = "peeking_take_while"
 version = "0.1.2"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 
+[[package]]
+name = "pkg-config"
+version = "0.3.15"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+
 [[package]]
 name = "plain"
 version = "0.2.3"
@@ -901,6 +973,24 @@ dependencies = [
  "winapi 0.3.7 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
+[[package]]
+name = "rand"
+version = "0.6.5"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+dependencies = [
+ "autocfg 0.1.6 (registry+https://github.com/rust-lang/crates.io-index)",
+ "libc 0.2.62 (registry+https://github.com/rust-lang/crates.io-index)",
+ "rand_chacha 0.1.1 (registry+https://github.com/rust-lang/crates.io-index)",
+ "rand_core 0.4.2 (registry+https://github.com/rust-lang/crates.io-index)",
+ "rand_hc 0.1.0 (registry+https://github.com/rust-lang/crates.io-index)",
+ "rand_isaac 0.1.1 (registry+https://github.com/rust-lang/crates.io-index)",
+ "rand_jitter 0.1.4 (registry+https://github.com/rust-lang/crates.io-index)",
+ "rand_os 0.1.3 (registry+https://github.com/rust-lang/crates.io-index)",
+ "rand_pcg 0.1.2 (registry+https://github.com/rust-lang/crates.io-index)",
+ "rand_xorshift 0.1.1 (registry+https://github.com/rust-lang/crates.io-index)",
+ "winapi 0.3.7 (registry+https://github.com/rust-lang/crates.io-index)",
+]
+
 [[package]]
 name = "rand"
 version = "0.7.0"
@@ -913,6 +1003,15 @@ dependencies = [
  "rand_hc 0.2.0 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
+[[package]]
+name = "rand_chacha"
+version = "0.1.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+dependencies = [
+ "autocfg 0.1.6 (registry+https://github.com/rust-lang/crates.io-index)",
+ "rand_core 0.3.1 (registry+https://github.com/rust-lang/crates.io-index)",
+]
+
 [[package]]
 name = "rand_chacha"
 version = "0.2.1"
@@ -943,6 +1042,14 @@ dependencies = [
  "getrandom 0.1.10 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
+[[package]]
+name = "rand_hc"
+version = "0.1.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+dependencies = [
+ "rand_core 0.3.1 (registry+https://github.com/rust-lang/crates.io-index)",
+]
+
 [[package]]
 name = "rand_hc"
 version = "0.2.0"
@@ -951,6 +1058,24 @@ dependencies = [
  "rand_core 0.5.0 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
+[[package]]
+name = "rand_isaac"
+version = "0.1.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+dependencies = [
+ "rand_core 0.3.1 (registry+https://github.com/rust-lang/crates.io-index)",
+]
+
+[[package]]
+name = "rand_jitter"
+version = "0.1.4"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+dependencies = [
+ "libc 0.2.62 (registry+https://github.com/rust-lang/crates.io-index)",
+ "rand_core 0.4.2 (registry+https://github.com/rust-lang/crates.io-index)",
+ "winapi 0.3.7 (registry+https://github.com/rust-lang/crates.io-index)",
+]
+
 [[package]]
 name = "rand_os"
 version = "0.1.3"
@@ -964,6 +1089,23 @@ dependencies = [
  "winapi 0.3.7 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
+[[package]]
+name = "rand_pcg"
+version = "0.1.2"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+dependencies = [
+ "autocfg 0.1.6 (registry+https://github.com/rust-lang/crates.io-index)",
+ "rand_core 0.4.2 (registry+https://github.com/rust-lang/crates.io-index)",
+]
+
+[[package]]
+name = "rand_xorshift"
+version = "0.1.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+dependencies = [
+ "rand_core 0.3.1 (registry+https://github.com/rust-lang/crates.io-index)",
+]
+
 [[package]]
 name = "rand_xoshiro"
 version = "0.1.0"
@@ -1001,7 +1143,7 @@ dependencies = [
  "crossbeam-deque 0.6.3 (registry+https://github.com/rust-lang/crates.io-index)",
  "crossbeam-queue 0.1.2 (registry+https://github.com/rust-lang/crates.io-index)",
  "crossbeam-utils 0.6.6 (registry+https://github.com/rust-lang/crates.io-index)",
- "lazy_static 1.3.0 (registry+https://github.com/rust-lang/crates.io-index)",
+ "lazy_static 1.4.0 (registry+https://github.com/rust-lang/crates.io-index)",
  "num_cpus 1.10.1 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
@@ -1018,6 +1160,11 @@ name = "redox_syscall"
 version = "0.1.56"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 
+[[package]]
+name = "ref_thread_local"
+version = "0.0.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+
 [[package]]
 name = "regex"
 version = "1.2.1"
@@ -1105,6 +1252,28 @@ dependencies = [
  "syn 0.15.44 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
+[[package]]
+name = "sdl2"
+version = "0.32.2"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+dependencies = [
+ "bitflags 1.1.0 (registry+https://github.com/rust-lang/crates.io-index)",
+ "lazy_static 1.4.0 (registry+https://github.com/rust-lang/crates.io-index)",
+ "libc 0.2.62 (registry+https://github.com/rust-lang/crates.io-index)",
+ "num 0.1.42 (registry+https://github.com/rust-lang/crates.io-index)",
+ "rand 0.6.5 (registry+https://github.com/rust-lang/crates.io-index)",
+ "sdl2-sys 0.32.6 (registry+https://github.com/rust-lang/crates.io-index)",
+]
+
+[[package]]
+name = "sdl2-sys"
+version = "0.32.6"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+dependencies = [
+ "cfg-if 0.1.9 (registry+https://github.com/rust-lang/crates.io-index)",
+ "libc 0.2.62 (registry+https://github.com/rust-lang/crates.io-index)",
+]
+
 [[package]]
 name = "semver"
 version = "0.9.0"
@@ -1301,7 +1470,7 @@ name = "thread_local"
 version = "0.3.6"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
- "lazy_static 1.3.0 (registry+https://github.com/rust-lang/crates.io-index)",
+ "lazy_static 1.4.0 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
 [[package]]
@@ -1369,6 +1538,15 @@ name = "unicode-xid"
 version = "0.2.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 
+[[package]]
+name = "user32-sys"
+version = "0.1.3"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+dependencies = [
+ "winapi 0.2.8 (registry+https://github.com/rust-lang/crates.io-index)",
+ "winapi-build 0.1.1 (registry+https://github.com/rust-lang/crates.io-index)",
+]
+
 [[package]]
 name = "vec_map"
 version = "0.8.1"
@@ -1441,6 +1619,7 @@ dependencies = [
  "wasmer-runtime-core 0.6.0",
  "wasmer-singlepass-backend 0.6.0",
  "wasmer-wasi 0.6.0",
+ "wasmer-wasi-framebuffer 0.6.0",
  "wasmer-wasi-tests 0.6.0",
 ]
 
@@ -1504,7 +1683,7 @@ name = "wasmer-emscripten"
 version = "0.6.0"
 dependencies = [
  "byteorder 1.3.2 (registry+https://github.com/rust-lang/crates.io-index)",
- "lazy_static 1.3.0 (registry+https://github.com/rust-lang/crates.io-index)",
+ "lazy_static 1.4.0 (registry+https://github.com/rust-lang/crates.io-index)",
  "libc 0.2.62 (registry+https://github.com/rust-lang/crates.io-index)",
  "rand 0.7.0 (registry+https://github.com/rust-lang/crates.io-index)",
  "time 0.1.42 (registry+https://github.com/rust-lang/crates.io-index)",
@@ -1541,7 +1720,7 @@ dependencies = [
  "cc 1.0.40 (registry+https://github.com/rust-lang/crates.io-index)",
  "goblin 0.0.24 (registry+https://github.com/rust-lang/crates.io-index)",
  "inkwell 0.1.0 (git+https://github.com/wasmerio/inkwell?branch=llvm8-0)",
- "lazy_static 1.3.0 (registry+https://github.com/rust-lang/crates.io-index)",
+ "lazy_static 1.4.0 (registry+https://github.com/rust-lang/crates.io-index)",
  "libc 0.2.62 (registry+https://github.com/rust-lang/crates.io-index)",
  "nix 0.15.0 (registry+https://github.com/rust-lang/crates.io-index)",
  "regex 1.2.1 (registry+https://github.com/rust-lang/crates.io-index)",
@@ -1571,7 +1750,7 @@ name = "wasmer-runtime"
 version = "0.6.0"
 dependencies = [
  "criterion 0.2.11 (registry+https://github.com/rust-lang/crates.io-index)",
- "lazy_static 1.3.0 (registry+https://github.com/rust-lang/crates.io-index)",
+ "lazy_static 1.4.0 (registry+https://github.com/rust-lang/crates.io-index)",
  "memmap 0.7.0 (registry+https://github.com/rust-lang/crates.io-index)",
  "tempfile 3.1.0 (registry+https://github.com/rust-lang/crates.io-index)",
  "wabt 0.9.1 (registry+https://github.com/rust-lang/crates.io-index)",
@@ -1604,7 +1783,7 @@ dependencies = [
  "field-offset 0.1.1 (registry+https://github.com/rust-lang/crates.io-index)",
  "hex 0.3.2 (registry+https://github.com/rust-lang/crates.io-index)",
  "indexmap 1.1.0 (registry+https://github.com/rust-lang/crates.io-index)",
- "lazy_static 1.3.0 (registry+https://github.com/rust-lang/crates.io-index)",
+ "lazy_static 1.4.0 (registry+https://github.com/rust-lang/crates.io-index)",
  "libc 0.2.62 (registry+https://github.com/rust-lang/crates.io-index)",
  "nix 0.15.0 (registry+https://github.com/rust-lang/crates.io-index)",
  "page_size 0.4.1 (registry+https://github.com/rust-lang/crates.io-index)",
@@ -1627,7 +1806,7 @@ dependencies = [
  "colored 1.8.0 (registry+https://github.com/rust-lang/crates.io-index)",
  "dynasm 0.3.2 (registry+https://github.com/rust-lang/crates.io-index)",
  "dynasmrt 0.3.1 (registry+https://github.com/rust-lang/crates.io-index)",
- "lazy_static 1.3.0 (registry+https://github.com/rust-lang/crates.io-index)",
+ "lazy_static 1.4.0 (registry+https://github.com/rust-lang/crates.io-index)",
  "libc 0.2.62 (registry+https://github.com/rust-lang/crates.io-index)",
  "nix 0.15.0 (registry+https://github.com/rust-lang/crates.io-index)",
  "smallvec 0.6.10 (registry+https://github.com/rust-lang/crates.io-index)",
@@ -1661,6 +1840,16 @@ dependencies = [
  "winapi 0.3.7 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
+[[package]]
+name = "wasmer-wasi-framebuffer"
+version = "0.6.0"
+dependencies = [
+ "minifb 0.11.2 (registry+https://github.com/rust-lang/crates.io-index)",
+ "ref_thread_local 0.0.0 (registry+https://github.com/rust-lang/crates.io-index)",
+ "wasmer-runtime-core 0.6.0",
+ "wasmer-wasi 0.6.0",
+]
+
 [[package]]
 name = "wasmer-wasi-tests"
 version = "0.6.0"
@@ -1752,11 +1941,21 @@ version = "0.10.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
  "cgmath 0.16.1 (registry+https://github.com/rust-lang/crates.io-index)",
- "lazy_static 1.3.0 (registry+https://github.com/rust-lang/crates.io-index)",
+ "lazy_static 1.4.0 (registry+https://github.com/rust-lang/crates.io-index)",
  "rgb 0.8.14 (registry+https://github.com/rust-lang/crates.io-index)",
  "winapi 0.3.7 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
+[[package]]
+name = "x11-dl"
+version = "2.14.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+dependencies = [
+ "lazy_static 0.2.11 (registry+https://github.com/rust-lang/crates.io-index)",
+ "libc 0.2.62 (registry+https://github.com/rust-lang/crates.io-index)",
+ "pkg-config 0.3.15 (registry+https://github.com/rust-lang/crates.io-index)",
+]
+
 [metadata]
 "checksum aho-corasick 0.7.6 (registry+https://github.com/rust-lang/crates.io-index)" = "58fb5e95d83b38284460a5fda7d6470aa0b8844d283a0b614b8535e880800d2d"
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@@ -1816,6 +2015,7 @@ dependencies = [
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@@ -1831,7 +2031,8 @@ dependencies = [
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@@ -1841,17 +2042,23 @@ dependencies = [
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+"checksum pkg-config 0.3.15 (registry+https://github.com/rust-lang/crates.io-index)" = "a7c1d2cfa5a714db3b5f24f0915e74fcdf91d09d496ba61329705dda7774d2af"
 "checksum plain 0.2.3 (registry+https://github.com/rust-lang/crates.io-index)" = "b4596b6d070b27117e987119b4dac604f3c58cfb0b191112e24771b2faeac1a6"
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@@ -1861,19 +2068,27 @@ dependencies = [
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 "checksum redox_syscall 0.1.56 (registry+https://github.com/rust-lang/crates.io-index)" = "2439c63f3f6139d1b57529d16bc3b8bb855230c8efcc5d3a896c8bea7c3b1e84"
+"checksum ref_thread_local 0.0.0 (registry+https://github.com/rust-lang/crates.io-index)" = "d813022b2e00774a48eaf43caaa3c20b45f040ba8cbf398e2e8911a06668dbe6"
 "checksum regex 1.2.1 (registry+https://github.com/rust-lang/crates.io-index)" = "88c3d9193984285d544df4a30c23a4e62ead42edf70a4452ceb76dac1ce05c26"
 "checksum regex-automata 0.1.8 (registry+https://github.com/rust-lang/crates.io-index)" = "92b73c2a1770c255c240eaa4ee600df1704a38dc3feaa6e949e7fcd4f8dc09f9"
 "checksum regex-syntax 0.6.11 (registry+https://github.com/rust-lang/crates.io-index)" = "b143cceb2ca5e56d5671988ef8b15615733e7ee16cd348e064333b251b89343f"
@@ -1886,6 +2101,8 @@ dependencies = [
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+"checksum sdl2 0.32.2 (registry+https://github.com/rust-lang/crates.io-index)" = "d051a07231e303f5f719da78cb6f7394f6d5b54f733aef5b0b447804a83edd7b"
+"checksum sdl2-sys 0.32.6 (registry+https://github.com/rust-lang/crates.io-index)" = "34e71125077d297d57e4c1acfe8981b5bdfbf5a20e7b589abfdcb33bf1127f86"
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@@ -1920,6 +2137,7 @@ dependencies = [
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 "checksum unicode-xid 0.1.0 (registry+https://github.com/rust-lang/crates.io-index)" = "fc72304796d0818e357ead4e000d19c9c174ab23dc11093ac919054d20a6a7fc"
 "checksum unicode-xid 0.2.0 (registry+https://github.com/rust-lang/crates.io-index)" = "826e7639553986605ec5979c7dd957c7895e93eabed50ab2ffa7f6128a75097c"
+"checksum user32-sys 0.1.3 (registry+https://github.com/rust-lang/crates.io-index)" = "e6b719983b952c04198829b51653c06af36f0e44c967fcc1a2bb397ceafbf80a"
 "checksum vec_map 0.8.1 (registry+https://github.com/rust-lang/crates.io-index)" = "05c78687fb1a80548ae3250346c3db86a80a7cdd77bda190189f2d0a0987c81a"
 "checksum version_check 0.1.5 (registry+https://github.com/rust-lang/crates.io-index)" = "914b1a6776c4c929a602fafd8bc742e06365d4bcbe48c30f9cca5824f70dc9dd"
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@@ -1939,3 +2157,4 @@ dependencies = [
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+"checksum x11-dl 2.14.0 (registry+https://github.com/rust-lang/crates.io-index)" = "326c500cdc166fd7c70dd8c8a829cd5c0ce7be5a5d98c25817de2b9bdc67faf8"

Cargo.toml

@@ -36,6 +36,7 @@ wasmer-kernel-loader = { path = "lib/kernel-loader", optional = true }
 wasmer-dev-utils = { path = "lib/dev-utils", optional = true }
 wasmer-wasi-tests = { path = "lib/wasi-tests", optional = true }
 wasmer-emscripten-tests = { path = "lib/emscripten-tests", optional = true }
+wasmer-wasi-framebuffer = { path = "lib/wasi-framebuffer", optional = true }
 
 [workspace]
 members = [
@@ -54,6 +55,7 @@ members = [
     "lib/kernel-loader",
     "lib/kernel-net",
     "lib/dev-utils",
+    "lib/wasi-framebuffer",
     "lib/wasi-tests",
     "lib/emscripten-tests",
     "examples/plugin-for-example"
@@ -91,6 +93,7 @@ backend-singlepass = [
 ]
 wasi = ["wasmer-wasi"]
 # vfs = ["wasmer-runtime-abi"]
+experimental-framebuffer = ["wasmer-wasi-framebuffer"]
 
 [[example]]
 name = "plugin"

lib/wasi-framebuffer/Cargo.toml

@@ -0,0 +1,17 @@
+[package]
+name = "wasmer-wasi-framebuffer"
+version = "0.6.0"
+authors = ["The Wasmer Engineering Team <engineering@wasmer.io>"]
+edition = "2018"
+repository = "https://github.com/wasmerio/wasmer"
+publish = true
+description = "An experimental non-standard WASI extension for graphics"
+
+[badges]
+maintenance = { status = "experimental" }
+
+[dependencies]
+minifb = "0.11"
+wasmer-wasi = { version = "0.6.0", path = "../wasi" }
+wasmer-runtime-core = { version = "0.6.0", path = "../runtime-core" }
+ref_thread_local = "0.0"

lib/wasi-framebuffer/README.md

@@ -0,0 +1,7 @@
+# WASI Framebuffer
+
+An experimental extension of WASI for basic graphics.
+
+This is not part of the WASI standard right now so use at your own risk -- it may break or be removed
+
+TODO add usage instructions here

lib/wasi-framebuffer/src/lib.rs

@@ -0,0 +1,432 @@
+use ref_thread_local::{ref_thread_local, refmanager::RefMut, RefThreadLocal};
+use std::convert::TryInto;
+use std::io::{Read, Seek, SeekFrom, Write};
+use wasmer_wasi::state::{WasiFile, WasiFs, ALL_RIGHTS, VIRTUAL_ROOT_FD};
+
+use minifb::{Key, Scale, Window, WindowOptions};
+
+ref_thread_local! {
+    pub(crate) static managed FRAMEBUFFER_STATE: FrameBufferState =
+        FrameBufferState::new();
+}
+
+fn get_fb_state<'a>() -> RefMut<'a, FrameBufferState> {
+    FRAMEBUFFER_STATE.borrow_mut()
+}
+
+pub const MAX_X: u32 = 8192;
+pub const MAX_Y: u32 = 4320;
+
+#[derive(Debug)]
+pub enum FrameBufferFileType {
+    Buffer,
+    Resolution,
+    IndexDisplay,
+    Input,
+}
+
+#[derive(Debug)]
+pub(crate) struct FrameBufferState {
+    // double buffered
+    pub data_1: Vec<u32>,
+    pub data_2: Vec<u32>,
+
+    pub x_size: u32,
+    pub y_size: u32,
+    pub front_buffer: bool,
+
+    pub window: Window,
+}
+
+impl FrameBufferState {
+    pub fn new() -> Self {
+        let x = 100;
+        let y = 200;
+
+        let window = Self::create_window(x, y);
+
+        Self {
+            data_1: vec![0; x * y],
+            data_2: vec![0; x * y],
+
+            x_size: x as u32,
+            y_size: y as u32,
+            front_buffer: true,
+
+            window,
+        }
+    }
+
+    fn create_window(x: usize, y: usize) -> Window {
+        Window::new(
+            "Wasmer Experimental FrameBuffer",
+            x,
+            y,
+            WindowOptions {
+                resize: true,
+                scale: Scale::X1,
+                ..WindowOptions::default()
+            },
+        )
+        .unwrap()
+    }
+
+    pub fn resize(&mut self, x: u32, y: u32) -> Option<()> {
+        if x >= MAX_X || y >= MAX_Y {
+            return None;
+        }
+        self.x_size = x;
+        self.y_size = x;
+
+        self.data_1.resize((x * y) as usize, 0);
+        self.data_2.resize((x * y) as usize, 0);
+
+        self.window = Self::create_window(x as usize, y as usize);
+
+        Some(())
+    }
+
+    pub fn draw(&mut self) {
+        self.window.update_with_buffer(if self.front_buffer {
+            &self.data_1[..]
+        } else {
+            &self.data_2[..]
+        });
+    }
+
+    pub fn get_buffer(&self) -> &[u32] {
+        if self.front_buffer {
+            &self.data_1[..]
+        } else {
+            &self.data_2[..]
+        }
+    }
+    pub fn get_buffer_mut(&mut self) -> &mut [u32] {
+        if self.front_buffer {
+            &mut self.data_1[..]
+        } else {
+            &mut self.data_2[..]
+        }
+    }
+
+    #[inline]
+    // the real index into u32s and whether to use the front buffer or the back buffer
+    fn get_idx_info(&self, idx: usize) -> Option<(usize, bool)> {
+        let mut base_idx = idx / 4;
+        let mut front_buffer = true;
+
+        if base_idx >= self.data_1.len() {
+            base_idx -= self.data_1.len();
+            front_buffer = false;
+
+            if base_idx >= self.data_2.len() {
+                return None;
+            }
+        }
+
+        Some((base_idx, front_buffer))
+    }
+
+    pub fn get_byte(&self, idx: usize) -> Option<u8> {
+        let (base_idx, front_buffer) = self.get_idx_info(idx)?;
+
+        let shift = idx % 4;
+        let shift_amt = 8 * shift;
+
+        if front_buffer {
+            Some((self.data_1[base_idx] >> shift_amt) as u8)
+        } else {
+            Some((self.data_2[base_idx] >> shift_amt) as u8)
+        }
+    }
+
+    pub fn set_byte(&mut self, idx: usize, val: u8) -> Option<()> {
+        let (base_idx, front_buffer) = self.get_idx_info(idx)?;
+
+        let shift = idx % 4;
+        let shift_amt = 8 * shift;
+
+        if front_buffer {
+            self.data_1[base_idx] &= !(0xFF << shift_amt);
+            self.data_1[base_idx] |= ((val as u32) << shift_amt) & (0xFF << shift_amt);
+        } else {
+            self.data_2[base_idx] &= !(0xFF << shift_amt);
+            self.data_2[base_idx] |= ((val as u32) << shift_amt) & (0xFF << shift_amt);
+        }
+        Some(())
+    }
+}
+
+#[derive(Debug)]
+pub struct FrameBuffer {
+    fb_type: FrameBufferFileType,
+    cursor: u32,
+}
+
+impl Read for FrameBuffer {
+    fn read(&mut self, buf: &mut [u8]) -> std::io::Result<usize> {
+        let fb_state = get_fb_state();
+        let cursor = self.cursor as usize;
+        match self.fb_type {
+            FrameBufferFileType::Buffer => {
+                let mut bytes_copied = 0;
+
+                for i in 0..buf.len() {
+                    if let Some(byte) = fb_state.get_byte(cursor + i) {
+                        buf[i] = byte;
+                        bytes_copied += 1;
+                    } else {
+                        break;
+                    }
+                }
+
+                self.cursor += bytes_copied;
+                Ok(bytes_copied as usize)
+            }
+            FrameBufferFileType::Resolution => {
+                let resolution_data = format!("{}x{}", fb_state.x_size, fb_state.y_size);
+
+                let mut bytes = resolution_data.bytes().skip(cursor);
+                let bytes_to_copy = std::cmp::min(buf.len(), bytes.clone().count());
+
+                for i in 0..bytes_to_copy {
+                    buf[i] = bytes.next().unwrap();
+                }
+
+                self.cursor += bytes_to_copy as u32;
+                Ok(bytes_to_copy)
+            }
+
+            FrameBufferFileType::IndexDisplay => {
+                if buf.len() == 0 {
+                    Ok(0)
+                } else {
+                    buf[0] = fb_state.front_buffer as u8 + b'0';
+                    Ok(1)
+                }
+            }
+
+            FrameBufferFileType::Input => {
+                // do input
+                unimplemented!()
+            }
+        }
+    }
+
+    fn read_to_end(&mut self, _buf: &mut Vec<u8>) -> std::io::Result<usize> {
+        unimplemented!()
+    }
+    fn read_to_string(&mut self, _buf: &mut String) -> std::io::Result<usize> {
+        unimplemented!()
+    }
+    fn read_exact(&mut self, _buf: &mut [u8]) -> std::io::Result<()> {
+        unimplemented!()
+    }
+}
+
+impl Seek for FrameBuffer {
+    fn seek(&mut self, pos: SeekFrom) -> std::io::Result<u64> {
+        match pos {
+            SeekFrom::Current(offset) => {
+                let result: std::io::Result<u64> = (self.cursor as i64)
+                    .checked_add(offset)
+                    .and_then(|v| v.try_into().ok())
+                    .ok_or_else(|| std::io::Error::from(std::io::ErrorKind::InvalidInput));
+
+                if let Ok(n) = result {
+                    self.cursor = n as u32;
+                }
+                result
+            }
+            SeekFrom::Start(offset) => {
+                self.cursor = offset as u32;
+                Ok(offset)
+            }
+            SeekFrom::End(_) => unimplemented!("Seek from end not yet implemented"),
+        }
+    }
+}
+
+impl Write for FrameBuffer {
+    fn write(&mut self, buf: &[u8]) -> std::io::Result<usize> {
+        let mut fb_state = get_fb_state();
+        let cursor = self.cursor as usize;
+        match self.fb_type {
+            FrameBufferFileType::Buffer => {
+                let mut bytes_copied = 0;
+
+                for i in 0..buf.len() {
+                    if fb_state.set_byte(cursor + i, buf[i]).is_none() {
+                        // TODO: check if we should return an error here
+                        break;
+                    }
+                    bytes_copied += 1;
+                }
+
+                self.cursor += bytes_copied;
+                Ok(bytes_copied as usize)
+            }
+            FrameBufferFileType::Resolution => {
+                let resolution_data = format!("{}x{}", fb_state.x_size, fb_state.y_size);
+                let mut byte_vec: Vec<u8> = resolution_data.bytes().collect();
+                let upper_limit = std::cmp::min(buf.len(), byte_vec.len() - cursor as usize);
+
+                for i in 0..upper_limit {
+                    byte_vec[i] = buf[i];
+                }
+
+                let mut parse_str = String::new();
+                for b in byte_vec.iter() {
+                    parse_str.push(*b as char);
+                }
+                let result: Vec<&str> = parse_str.split('x').collect();
+                if result.len() != 2 {
+                    return Ok(0);
+                }
+                if let Ok((n1, n2)) = result[0]
+                    .parse::<u32>()
+                    .and_then(|n1| result[1].parse::<u32>().map(|n2| (n1, n2)))
+                {
+                    if fb_state.resize(n1, n2).is_some() {
+                        return Ok(upper_limit);
+                    }
+                }
+                Ok(0)
+            }
+
+            FrameBufferFileType::IndexDisplay => {
+                if buf.len() == 0 {
+                    Ok(0)
+                } else {
+                    match buf[0] {
+                        b'0' => fb_state.front_buffer = true,
+                        b'1' => fb_state.front_buffer = false,
+                        _ => (),
+                    }
+                    fb_state.draw();
+                    Ok(1)
+                }
+            }
+            FrameBufferFileType::Input => Ok(0),
+        }
+    }
+    fn flush(&mut self) -> std::io::Result<()> {
+        Ok(())
+    }
+    fn write_all(&mut self, buf: &[u8]) -> std::io::Result<()> {
+        self.write(buf).map(|_| ())
+    }
+    fn write_fmt(&mut self, _fmt: std::fmt::Arguments) -> std::io::Result<()> {
+        unimplemented!()
+    }
+}
+
+impl WasiFile for FrameBuffer {
+    fn last_accessed(&self) -> u64 {
+        0
+    }
+    fn last_modified(&self) -> u64 {
+        0
+    }
+    fn created_time(&self) -> u64 {
+        0
+    }
+    fn size(&self) -> u64 {
+        0
+    }
+}
+
+pub fn initialize(fs: &mut WasiFs) -> Result<(), String> {
+    let frame_buffer_file = Box::new(FrameBuffer {
+        fb_type: FrameBufferFileType::Buffer,
+        cursor: 0,
+    });
+    let resolution_file = Box::new(FrameBuffer {
+        fb_type: FrameBufferFileType::Resolution,
+        cursor: 0,
+    });
+    let index_file = Box::new(FrameBuffer {
+        fb_type: FrameBufferFileType::IndexDisplay,
+        cursor: 0,
+    });
+    let input_file = Box::new(FrameBuffer {
+        fb_type: FrameBufferFileType::Input,
+        cursor: 0,
+    });
+
+    let dev_fd = unsafe {
+        fs.open_dir_all(
+            VIRTUAL_ROOT_FD,
+            "dev".to_string(),
+            ALL_RIGHTS,
+            ALL_RIGHTS,
+            0,
+        )
+        .map_err(|e| format!("fb: Failed to create dev folder {:?}", e))?
+    };
+
+    let fb_fd = unsafe {
+        fs.open_dir_all(
+            VIRTUAL_ROOT_FD,
+            "sys/class/graphics/wasmerfb".to_string(),
+            ALL_RIGHTS,
+            ALL_RIGHTS,
+            0,
+        )
+        .map_err(|e| format!("fb: Failed to create dev folder {:?}", e))?
+    };
+
+    let fd = fs
+        .open_file_at(
+            dev_fd,
+            input_file,
+            "input".to_string(),
+            ALL_RIGHTS,
+            ALL_RIGHTS,
+            0,
+        )
+        .map_err(|e| format!("fb: Failed to init framebuffer {:?}", e))?;
+
+    println!("Input open on fd {}", fd);
+
+    let fd = fs
+        .open_file_at(
+            dev_fd,
+            frame_buffer_file,
+            "wasmerfb0".to_string(),
+            ALL_RIGHTS,
+            ALL_RIGHTS,
+            0,
+        )
+        .map_err(|e| format!("fb: Failed to init framebuffer {:?}", e))?;
+
+    println!("Framebuffer open on fd {}", fd);
+
+    let fd = fs
+        .open_file_at(
+            fb_fd,
+            resolution_file,
+            "virtual_size".to_string(),
+            ALL_RIGHTS,
+            ALL_RIGHTS,
+            0,
+        )
+        .map_err(|e| format!("fb_resolution: Failed to init framebuffer {:?}", e))?;
+
+    println!("Framebuffer resolution open on fd {}", fd);
+
+    let fd = fs
+        .open_file_at(
+            fb_fd,
+            index_file,
+            "buffer_index_display".to_string(),
+            ALL_RIGHTS,
+            ALL_RIGHTS,
+            0,
+        )
+        .map_err(|e| format!("fb_index_display: Failed to init framebuffer {:?}", e))?;
+
+    println!("Framebuffer draw open on fd {}", fd);
+
+    Ok(())
+}

lib/wasi-framebuffer/src/util.rs

@@ -0,0 +1 @@
+

lib/wasi/src/lib.rs

@@ -39,6 +39,16 @@ pub fn generate_import_object(
     envs: Vec<Vec<u8>>,
     preopened_files: Vec<String>,
     mapped_dirs: Vec<(String, PathBuf)>,
+) -> ImportObject {
+    generate_import_object_with_fs_setup(args, envs, preopened_files, mapped_dirs, None)
+}
+
+pub fn generate_import_object_with_fs_setup(
+    args: Vec<Vec<u8>>,
+    envs: Vec<Vec<u8>>,
+    preopened_files: Vec<String>,
+    mapped_dirs: Vec<(String, PathBuf)>,
+    setup_fs: Option<Box<dyn Fn(&mut WasiFs) -> Result<(), String>>>,
 ) -> ImportObject {
     let state_gen = move || {
         fn state_destructor(data: *mut c_void) {
@@ -47,8 +57,13 @@ pub fn generate_import_object(
             }
         }
 
+        let mut fs = WasiFs::new(&preopened_files, &mapped_dirs).unwrap();
+        if let Some(sfn) = &setup_fs {
+            sfn(&mut fs).unwrap();
+        }
+
         let state = Box::new(WasiState {
-            fs: WasiFs::new(&preopened_files, &mapped_dirs).unwrap(),
+            fs,
             args: &args[..],
             envs: &envs[..],
         });

lib/wasi/src/state/mod.rs

@@ -70,6 +70,11 @@ pub enum Kind {
         /// The path on the host system where the file is located
         /// This is deprecated and will be removed in 0.7.0 or a shortly thereafter
         path: PathBuf,
+        /// Marks the file as a special file that only one `fd` can exist for
+        /// This is useful when dealing with host-provided special files that
+        /// should be looked up by path
+        /// TOOD: clarify here?
+        fd: Option<u32>,
     },
     Dir {
         /// Parent directory
@@ -268,6 +273,64 @@ impl WasiFs {
         next
     }
 
+    /// like create dir all, but it also opens it
+    /// Function is unsafe because it may break invariants and hasn't been tested.
+    /// This is an experimental function and may be removed
+    // dead code because this is an API for external use
+    #[allow(dead_code)]
+    pub unsafe fn open_dir_all(
+        &mut self,
+        base: __wasi_fd_t,
+        name: String,
+        rights: __wasi_rights_t,
+        rights_inheriting: __wasi_rights_t,
+        flags: __wasi_fdflags_t,
+    ) -> Result<__wasi_fd_t, WasiFsError> {
+        let base_fd = self.get_fd(base).map_err(WasiFsError::from_wasi_err)?;
+        // TODO: check permissions here? probably not, but this should be
+        // an explicit choice, so justify it in a comment when we remove this one
+        let mut cur_inode = base_fd.inode;
+
+        let path: &Path = Path::new(&name);
+        //let n_components = path.components().count();
+        for c in path.components() {
+            let segment_name = c.as_os_str().to_string_lossy().to_string();
+            match &self.inodes[cur_inode].kind {
+                Kind::Dir { ref entries, .. } | Kind::Root { ref entries } => {
+                    if let Some(_entry) = entries.get(&segment_name) {
+                        // TODO: this should be fixed
+                        return Err(WasiFsError::AlreadyExists);
+                    }
+
+                    let kind = Kind::Dir {
+                        parent: Some(cur_inode),
+                        path: PathBuf::from(""),
+                        entries: HashMap::new(),
+                    };
+
+                    let inode =
+                        self.create_inode_with_default_stat(kind, false, segment_name.clone());
+                    // reborrow to insert
+                    match &mut self.inodes[cur_inode].kind {
+                        Kind::Dir {
+                            ref mut entries, ..
+                        }
+                        | Kind::Root { ref mut entries } => {
+                            entries.insert(segment_name, inode);
+                        }
+                        _ => unreachable!("Dir or Root became not Dir or Root"),
+                    }
+
+                    cur_inode = inode;
+                }
+                _ => return Err(WasiFsError::BaseNotDirectory),
+            }
+        }
+
+        self.create_fd(rights, rights_inheriting, flags, cur_inode)
+            .map_err(WasiFsError::from_wasi_err)
+    }
+
     /// Opens a user-supplied file in the directory specified with the
     /// name and flags given
     // dead code because this is an API for external use
@@ -296,6 +359,7 @@ impl WasiFs {
                 let kind = Kind::File {
                     handle: Some(file),
                     path: PathBuf::from(""),
+                    fd: Some(self.next_fd.get()),
                 };
 
                 let inode = self
@@ -307,7 +371,7 @@ impl WasiFs {
                         ref mut entries, ..
                     }
                     | Kind::Root { ref mut entries } => {
-                        entries.insert(name, inode).ok_or(WasiFsError::IOError)?;
+                        entries.insert(name, inode);
                     }
                     _ => unreachable!("Dir or Root became not Dir or Root"),
                 }
@@ -456,6 +520,7 @@ impl WasiFs {
                                 Kind::File {
                                     handle: None,
                                     path: file.clone(),
+                                    fd: None,
                                 }
                             } else if file_type.is_symlink() {
                                 let link_value = file.read_link().ok().ok_or(__WASI_EIO)?;
@@ -855,7 +920,7 @@ impl WasiFs {
 
     pub fn get_stat_for_kind(&self, kind: &Kind) -> Option<__wasi_filestat_t> {
         let md = match kind {
-            Kind::File { handle, path } => match handle {
+            Kind::File { handle, path, .. } => match handle {
                 Some(wf) => {
                     return Some(__wasi_filestat_t {
                         st_filetype: __WASI_FILETYPE_REGULAR_FILE,

lib/wasi/src/syscalls/mod.rs

@@ -1678,6 +1678,8 @@ pub fn path_open(
         dirflags & __WASI_LOOKUP_SYMLINK_FOLLOW != 0,
     );
 
+    dbg!(&maybe_inode);
+
     if let Ok(m) = maybe_inode {
         &state.fs.inodes[m];
     }
@@ -1692,7 +1694,14 @@ pub fn path_open(
             Kind::File {
                 ref mut handle,
                 path,
+                fd,
             } => {
+                if let Some(special_fd) = fd {
+                    // short circuit if we're dealing with a special file
+                    assert!(handle.is_some());
+                    fd_cell.set(*special_fd);
+                    return __WASI_ESUCCESS;
+                }
                 if o_flags & __WASI_O_DIRECTORY != 0 {
                     return __WASI_ENOTDIR;
                 }
@@ -1782,6 +1791,7 @@ pub fn path_open(
                 let kind = Kind::File {
                     handle,
                     path: new_file_host_path,
+                    fd: None,
                 };
                 wasi_try!(state.fs.create_inode(kind, false, new_entity_name.clone()))
             };
@@ -2018,6 +2028,7 @@ pub fn path_rename(
         Kind::File {
             handle,
             ref mut path,
+            ..
         } => {
             let result = if let Some(h) = handle {
                 h.rename_file(&host_adjusted_target_path)
@@ -2188,7 +2199,7 @@ pub fn path_unlink_file(
     state.fs.inodes[removed_inode].stat.st_nlink -= 1;
     if state.fs.inodes[removed_inode].stat.st_nlink == 0 {
         match &mut state.fs.inodes[removed_inode].kind {
-            Kind::File { handle, path } => {
+            Kind::File { handle, path, .. } => {
                 if let Some(h) = handle {
                     wasi_try!(h.unlink().map_err(WasiFsError::into_wasi_err));
                 } else {
@@ -2259,11 +2270,14 @@ pub fn poll_oneoff(
     let out_ptr = wasi_try!(nevents.deref(memory));
 
     let mut fds = vec![];
+    let mut clock_subs = vec![];
     let mut in_events = vec![];
+    let mut total_ns_slept = 0;
 
     for sub in subscription_array.iter() {
         let s: WasiSubscription = wasi_try!(sub.get().try_into());
         let mut peb = PollEventBuilder::new();
+        let mut ns_to_sleep = 0;
 
         let fd = match s.event_type {
             EventType::Read(__wasi_subscription_fs_readwrite_t { fd }) => {
@@ -2293,7 +2307,17 @@ pub fn poll_oneoff(
                 in_events.push(peb.add(PollEvent::PollOut).build());
                 Some(fd)
             }
-            _ => unimplemented!("Clock eventtypes in wasi::poll_oneoff"),
+            EventType::Clock(clock_info) => {
+                if clock_info.clock_id == __WASI_CLOCK_REALTIME {
+                    // this is a hack
+                    // TODO: do this properly
+                    ns_to_sleep = clock_info.timeout;
+                    clock_subs.push(clock_info);
+                    None
+                } else {
+                    unimplemented!("Polling not implemented for clocks yet");
+                }
+            }
         };
 
         if let Some(fd) = fd {
@@ -2327,7 +2351,13 @@ pub fn poll_oneoff(
             };
             fds.push(wasi_file_ref);
         } else {
-            unimplemented!("Clock events are not yet implemented!");
+            let remaining_ns = ns_to_sleep as i64 - total_ns_slept as i64;
+            if remaining_ns > 0 {
+                debug!("Sleeping for {} nanoseconds", remaining_ns);
+                let duration = std::time::Duration::from_nanos(remaining_ns as u64);
+                std::thread::sleep(duration);
+                total_ns_slept += remaining_ns;
+            }
         }
     }
     let mut seen_events = vec![Default::default(); in_events.len()];
@@ -2376,6 +2406,23 @@ pub fn poll_oneoff(
         event_array[events_seen].set(event);
         events_seen += 1;
     }
+    for clock_info in clock_subs {
+        let event = __wasi_event_t {
+            userdata: clock_info.userdata,
+            error: __WASI_ESUCCESS,
+            type_: __WASI_EVENTTYPE_CLOCK,
+            u: unsafe {
+                __wasi_event_u {
+                    fd_readwrite: __wasi_event_fd_readwrite_t {
+                        nbytes: 0,
+                        flags: 0,
+                    },
+                }
+            },
+        };
+        event_array[events_seen].set(event);
+        events_seen += 1;
+    }
     out_ptr.set(events_seen as u32);
     __WASI_ESUCCESS
 }

src/bin/wasmer.rs

@@ -48,11 +48,14 @@ mod wasmer_wasi {
         false
     }
 
-    pub fn generate_import_object(
+    pub struct WasiFs;
+
+    pub fn generate_import_object_with_fs_setup(
         _args: Vec<Vec<u8>>,
         _envs: Vec<Vec<u8>>,
         _preopened_files: Vec<String>,
         _mapped_dirs: Vec<(String, std::path::PathBuf)>,
+        _setup_fs: Option<Box<dyn Fn(&mut WasiFs) -> Result<(), String>>>,
     ) -> ImportObject {
         unimplemented!()
     }
@@ -576,7 +579,7 @@ fn execute_wasm(options: &Run) -> Result<(), String> {
         .map_err(|e| format!("{:?}", e))?;
     } else {
         if cfg!(feature = "wasi") && wasmer_wasi::is_wasi_module(&module) {
-            let import_object = wasmer_wasi::generate_import_object(
+            let import_object = wasmer_wasi::generate_import_object_with_fs_setup(
                 if let Some(cn) = &options.command_name {
                     [cn.clone()]
                 } else {
@@ -593,6 +596,10 @@ fn execute_wasm(options: &Run) -> Result<(), String> {
                     .collect(),
                 options.pre_opened_directories.clone(),
                 mapped_dirs,
+                #[cfg(feature = "experimental-framebuffer")]
+                Some(Box::new(wasmer_wasi_framebuffer::initialize)),
+                #[cfg(not(feature = "experimental-framebuffer"))]
+                None,
             );
 
             #[allow(unused_mut)] // mut used in feature