read shared limits

tests/gen/assert_shared.0.c

@@ -0,0 +1,11 @@
+
+#include <stdio.h>
+#include "w2c2_base.h"
+#include "test.h"
+#include "test_shared.0.h"
+
+void test() {
+    shared0Instance instance;
+    shared0Instantiate(&instance, resolveTestImports);
+    printStart("shared.0.wasm");
+}

tests/gen/assert_shared.1.c

@@ -0,0 +1,11 @@
+
+#include <stdio.h>
+#include "w2c2_base.h"
+#include "test.h"
+#include "test_shared.1.h"
+
+void test() {
+    shared1Instance instance;
+    shared1Instantiate(&instance, resolveTestImports);
+    printStart("shared.1.wasm");
+}

tests/gen/assert_shared.2.c

@@ -0,0 +1,11 @@
+
+#include <stdio.h>
+#include "w2c2_base.h"
+#include "test.h"
+#include "test_shared.2.h"
+
+void test() {
+    shared2Instance instance;
+    shared2Instantiate(&instance, resolveTestImports);
+    printStart("shared.2.wasm");
+}

tests/gen/assert_shared.3.c

@@ -0,0 +1,11 @@
+
+#include <stdio.h>
+#include "w2c2_base.h"
+#include "test.h"
+#include "test_shared.3.h"
+
+void test() {
+    shared3Instance instance;
+    shared3Instantiate(&instance, resolveTestImports);
+    printStart("shared.3.wasm");
+}

tests/gen/assert_shared.4.c

@@ -0,0 +1,11 @@
+
+#include <stdio.h>
+#include "w2c2_base.h"
+#include "test.h"
+#include "test_shared.4.h"
+
+void test() {
+    shared4Instance instance;
+    shared4Instantiate(&instance, resolveTestImports);
+    printStart("shared.4.wasm");
+}

tests/gen/assert_shared.5.c

@@ -0,0 +1,11 @@
+
+#include <stdio.h>
+#include "w2c2_base.h"
+#include "test.h"
+#include "test_shared.5.h"
+
+void test() {
+    shared5Instance instance;
+    shared5Instantiate(&instance, resolveTestImports);
+    printStart("shared.5.wasm");
+}

tests/gen/assert_shared.6.c

@@ -0,0 +1,11 @@
+
+#include <stdio.h>
+#include "w2c2_base.h"
+#include "test.h"
+#include "test_shared.6.h"
+
+void test() {
+    shared6Instance instance;
+    shared6Instantiate(&instance, resolveTestImports);
+    printStart("shared.6.wasm");
+}

tests/gen/assert_shared.7.c

@@ -0,0 +1,11 @@
+
+#include <stdio.h>
+#include "w2c2_base.h"
+#include "test.h"
+#include "test_shared.7.h"
+
+void test() {
+    shared7Instance instance;
+    shared7Instantiate(&instance, resolveTestImports);
+    printStart("shared.7.wasm");
+}

tests/gen/assert_shared.8.c

@@ -0,0 +1,11 @@
+
+#include <stdio.h>
+#include "w2c2_base.h"
+#include "test.h"
+#include "test_shared.8.h"
+
+void test() {
+    shared8Instance instance;
+    shared8Instantiate(&instance, resolveTestImports);
+    printStart("shared.8.wasm");
+}

tests/gen/shared.json

@@ -0,0 +1,11 @@
+{"source_filename": "shared.wast",
+ "commands": [
+  {"type": "module", "line": 3, "filename": "shared.0.wasm"}, 
+  {"type": "module", "line": 4, "filename": "shared.1.wasm"}, 
+  {"type": "module", "line": 8, "filename": "shared.2.wasm"}, 
+  {"type": "module", "line": 9, "filename": "shared.3.wasm"}, 
+  {"type": "module", "line": 10, "filename": "shared.4.wasm"}, 
+  {"type": "module", "line": 11, "filename": "shared.5.wasm"}, 
+  {"type": "module", "line": 12, "filename": "shared.6.wasm"}, 
+  {"type": "module", "line": 13, "filename": "shared.7.wasm"}, 
+  {"type": "module", "line": 20, "filename": "shared.8.wasm"}]}

tests/main.c

@@ -15,6 +15,7 @@ void spectest__print_i32(U32 l0) {
 
 static wasmTable spectest_table;
 static wasmMemory spectest_memory;
+static wasmMemory spectest_shared_memory;
 
 void*
 resolveTestImports(
@@ -42,6 +43,10 @@ resolveTestImports(
         return (void*)&spectest_global_i64;
     }
 
+    if (strcmp(name, "shared_memory") == 0) {
+        return (void*)&spectest_shared_memory;
+    }
+
     fprintf(stderr, "FAIL: import of unknown spectest item: %s\n", name);
 
     return NULL;
@@ -113,6 +118,7 @@ void printOK(const char* description) {
 
 static void initTest() {
     wasmMemoryAllocate(&spectest_memory, 1, 2);
+    wasmMemoryAllocate(&spectest_shared_memory, 1, 2);
     wasmTableAllocate(&spectest_table, 10, 20);
 }
 

tests/shared.wast

@@ -0,0 +1,20 @@
+;; proposals/threads/memory.wast
+
+(module (memory 0 0 shared))
+(module (memory 1 2 shared))
+
+;; proposals/threads/exports.wast
+
+(module (memory (export "a") 0 1 shared))
+(module (memory 0 1 shared) (export "a" (memory 0)))
+(module (memory $a (export "a") 0 1 shared))
+(module (memory $a 0 1 shared) (export "a" (memory $a)))
+(module (export "a" (memory 0)) (memory 0 1 shared))
+(module (export "a" (memory $a)) (memory $a 0 1 shared))
+
+
+;; proposals/threads/imports.wast
+
+;; Shared Memory
+
+(module (import "spectest" "shared_memory" (memory 1 2 shared)))

w2c2/import.h

@@ -57,9 +57,10 @@ typedef struct WasmMemoryImport {
     char* name;
     U32 min;
     U32 max;
+    bool shared;
 } WasmMemoryImport;
 
-static const WasmMemoryImport wasmEmptyMemoryImport = {NULL, NULL, 0, 0};
+static const WasmMemoryImport wasmEmptyMemoryImport = {NULL, NULL, 0, 0, false};
 
 ARRAY_TYPE(
     WasmMemoryImports,
@@ -76,9 +77,10 @@ typedef struct WasmTableImport {
     char* name;
     U32 min;
     U32 max;
+    bool shared;
 } WasmTableImport;
 
-static const WasmTableImport wasmEmptyTableImport = {NULL, NULL, 0, 0};
+static const WasmTableImport wasmEmptyTableImport = {NULL, NULL, 0, 0, false};
 
 ARRAY_TYPE(
     WasmTableImports,

w2c2/memory.h

@@ -8,8 +8,9 @@
 typedef struct WasmMemory {
     U32 min;
     U32 max;
+    bool shared;
 } WasmMemory;
 
-static const WasmMemory wasmEmptyMemory = {0, 0};
+static const WasmMemory wasmEmptyMemory = {0, 0, false};
 
 #endif /* W2C2_MEMORY_H */

w2c2/reader.c

@@ -690,6 +690,7 @@ wasmReadLimits(
     WasmModuleReader* reader,
     U32* min,
     U32* max,
+    bool *shared,
     WasmModuleReaderError** error
 ) {
     U8 kindIndicator = 0;
@@ -715,6 +716,7 @@ wasmReadLimits(
     switch (kindIndicator) {
         case 0x0: {
             *max = 0;
+            *shared = false;
             break;
         }
         case 0x1: {
@@ -726,6 +728,19 @@ wasmReadLimits(
                 *error = &wasmModuleReaderError;
                 return;
             }
+            *shared = false;
+            break;
+        }
+        case 0x3: {
+            /* Read max */
+            if (leb128ReadU32(&reader->buffer, max) == 0) {
+                static WasmModuleReaderError wasmModuleReaderError = {
+                    wasmModuleReaderInvalidLimitMaximum
+                };
+                *error = &wasmModuleReaderError;
+                return;
+            }
+            *shared = true;
             break;
         }
         default: {
@@ -746,9 +761,10 @@ wasmReadMemoryType(
     WasmModuleReader* reader,
     U32* min,
     U32* max,
+    bool* shared,
     WasmModuleReaderError** error
 ) {
-    wasmReadLimits(reader, min, max, error);
+    wasmReadLimits(reader, min, max, shared, error);
     if (*error != NULL) {
         return;
     }
@@ -770,7 +786,7 @@ wasmReadMemoryImport(
     import.module = module;
     import.name = name;
 
-    wasmReadMemoryType(reader, &import.min, &import.max, error);
+    wasmReadMemoryType(reader, &import.min, &import.max, &import.shared, error);
     if (*error != NULL) {
         return;
     }
@@ -792,6 +808,7 @@ wasmReadTableType(
     WasmModuleReader* reader,
     U32* min,
     U32* max,
+    bool* shared,
     WasmModuleReaderError** error
 ) {
     U8 tableType = 0;
@@ -808,7 +825,7 @@ wasmReadTableType(
         return;
     }
 
-    wasmReadLimits(reader, min, max, error);
+    wasmReadLimits(reader, min, max, shared, error);
     if (*error != NULL) {
         return;
     }
@@ -832,7 +849,7 @@ wasmReadTableImport(
     import.module = module;
     import.name = name;
 
-    wasmReadTableType(reader, &import.min, &import.max, error);
+    wasmReadTableType(reader, &import.min, &import.max, &import.shared, error);
     if (*error != NULL) {
         return;
     }
@@ -1091,7 +1108,7 @@ wasmReadMemorySection(
     /* Read memories */
     for (; memoryIndex < memoryCount; memoryIndex++) {
         WasmMemory memory = wasmEmptyMemory;
-        wasmReadMemoryType(reader, &memory.min, &memory.max, error);
+        wasmReadMemoryType(reader, &memory.min, &memory.max, &memory.shared, error);
         if (*error != NULL) {
             return;
         }
@@ -1549,7 +1566,7 @@ wasmReadTableSection(
         U32 tableIndex = 0;
         for (; tableIndex < tableCount; tableIndex++) {
             WasmTable table = wasmEmptyTable;
-            wasmReadTableType(reader, &table.min, &table.max, error);
+            wasmReadTableType(reader, &table.min, &table.max, &table.shared, error);
             if (*error != NULL) {
                 return;
             }

w2c2/table.h

@@ -10,8 +10,9 @@ static const U8 wasmTableTypeFuncRef = 0x70;
 typedef struct WasmTable {
     U32 min;
     U32 max;
+    bool shared;
 } WasmTable;
 
-static const WasmTable wasmEmptyTable = {0, 0};
+static const WasmTable wasmEmptyTable = {0, 0, false};
 
 #endif /* W2C2_TABLE_H */