From 43130dd5c2bad2e82119465aa657d23b5e701fbb Mon Sep 17 00:00:00 2001
From: NikVolf <nikvolf@gmail.com>
Date: Thu, 13 Apr 2017 01:03:41 +0300
Subject: [PATCH] rust contract sample

---
 runner/index.html    | 33 ++++++++++++++++++++++++++++++---
 samples/contract2.rs | 19 +++++++++++++++++++
 2 files changed, 49 insertions(+), 3 deletions(-)
 create mode 100644 samples/contract2.rs

diff --git a/runner/index.html b/runner/index.html
index 8a1e22b..c07a073 100644
--- a/runner/index.html
+++ b/runner/index.html
@@ -28,6 +28,16 @@
             (import "env" "_abort" (func (;3;) (type 1)))
             (import "env" "___setErrNo" (func (;4;) (type 2)))
 
+            (import "env" "invoke_vi" (func (;4;) (type 3)))
+            (import "env" "invoke_v" (func (;5;) (type 1)))
+            (import "env" "_rust_begin_unwind" (func (;6;) (type 4)))
+            (import "env" "_emscripten_memcpy_big" (func (;9;) (type 5)))
+            (import "env" "___gxx_personality_v0" (func (;10;) (type 6)))
+            (import "env" "_llvm_trap" (func (;11;) (type 0)))
+            (import "env" "___resumeException" (func (;12;) (type 1)))
+            (import "env" "___cxa_find_matching_catch_2" (func (;13;) (type 2)))
+            (import "env" "___gxx_personality_v0" (func (;14;) (type 7)))
+
             (import "env" "memory" (memory (;0;) 256 256))
             (import "env" "table" (table (;0;) 0 0 anyfunc))
             (import "env" "memoryBase" (global (;3;) i32))
@@ -40,8 +50,25 @@
           env.enlargeMemory = env.enlargeMemory || function() { throw "error enlarging memory"; };
           env.getTotalMemory = env.getTotalMemory || function() { return 65536 * 256; };
           env.abortOnCannotGrowMemory = env.abortOnCannotGrowMemory || function() { throw "abort growing memory"; };
-          env._abort = env.abortOnCannotGrowMemory || function() { throw "abort"; };
-          env.___setErrNo = env.abortOnCannotGrowMemory || function() { throw "setting error no"; };
+          env._abort = env._abort || function() { throw "_abort"; };
+          env.abort = env.abort || function() { throw "abort"; };
+          env.___setErrNo = env.___setErrNo || function() { throw "setting error no"; };
+
+          // dead symbols in rust wasm32-unknown-emscripten target
+          // todo: strip/raise issue in rust compiler
+          env.invoke_vi = function() { throw "invoke_vi: unreachable!"; }
+          env.invoke_v = function() { throw "invoke_v: unreachable!"; }
+
+          // todo: also test unwind about those two
+          env._rust_begin_unwind = function() { throw "_rust_begin_unwind: unreachable!"; }
+          env._llvm_trap = function() { throw "_llvm_trap: unreachable!"; }
+
+          env._emscripten_memcpy_big = function() { throw "_emscripten_memcpy_big: unreachable!"; }
+          env.___gxx_personality_v0 = function() { throw "___gxx_personality_v0: unreachable!"; }
+          env.___resumeException = function() { throw "___resumeException: unreachable!"; }
+          env.___cxa_find_matching_catch_2 = function() { throw "___cxa_find_matching_catch_2: unreachable!"; }
+          env.___gxx_personality_v0 = function() { throw "___gxx_personality_v0: unreachable!"; }
+
           env.memoryBase = env.memoryBase || 0;
           env.tableBase = env.tableBase || 0;
 
@@ -53,7 +80,7 @@
             imports.env.memory = new WebAssembly.Memory({ initial: 256, maximum: 256 });
           }
           if (!imports.env.table) {
-            imports.env.table = new WebAssembly.Table({ initial: 0, maximum: 0, element: 'anyfunc' });
+            imports.env.table = new WebAssembly.Table({ initial: 8, maximum: 8, element: 'anyfunc' });
           }
           return new WebAssembly.Instance(module, imports);
         });
diff --git a/samples/contract2.rs b/samples/contract2.rs
new file mode 100644
index 0000000..cc37b1d
--- /dev/null
+++ b/samples/contract2.rs
@@ -0,0 +1,19 @@
+#![feature(link_args)]
+#![feature(lang_items)]
+#![feature(drop_types_in_const)]
+#![no_main]
+
+#[link_args = "-s WASM=1 -s NO_EXIT_RUNTIME=1 -s NO_FILESYSTEM=1"]
+extern {}
+
+static mut DATA: Option<Vec<u8>> = None;
+
+#[no_mangle]
+pub fn call() {
+    let mut vec = Vec::new();
+    unsafe { if let Some(ref v) = DATA { vec.extend(v); }; }
+    vec.push(1u8);
+    unsafe {
+        DATA = Some(vec);
+    }
+}
\ No newline at end of file