// beginning a Binaryen API trace #include #include #include #include "binaryen-c.h" int main() { std::map functionTypes; std::map expressions; std::map functions; std::map relooperBlocks; BinaryenModuleRef the_module = NULL; RelooperRef the_relooper = NULL; the_module = BinaryenModuleCreate(); expressions[size_t(NULL)] = BinaryenExpressionRef(NULL); BinaryenModuleAutoDrop(the_module); { const char* segments[] = { 0 }; BinaryenExpressionRef segmentOffsets[] = { 0 }; BinaryenIndex segmentSizes[] = { 0 }; BinaryenSetMemory(the_module, 256, 256, "memory", segments, segmentOffsets, segmentSizes, 0); } the_relooper = RelooperCreate(); { BinaryenExpressionRef children[] = { 0 }; expressions[1] = BinaryenBlock(the_module, "bb0", children, 0, BinaryenUndefined()); } relooperBlocks[0] = RelooperAddBlock(the_relooper, expressions[1]); expressions[2] = BinaryenGetLocal(the_module, 0, 1); expressions[3] = BinaryenConst(the_module, BinaryenLiteralInt32(0)); expressions[4] = BinaryenStore(the_module, 4, 0, 0, expressions[3], expressions[2], 1); expressions[5] = BinaryenReturn(the_module, expressions[0]); { BinaryenExpressionRef children[] = { expressions[4], expressions[5] }; expressions[6] = BinaryenBlock(the_module, "bb1", children, 2, BinaryenUndefined()); } relooperBlocks[1] = RelooperAddBlock(the_relooper, expressions[6]); RelooperAddBranch(relooperBlocks[0], relooperBlocks[1], expressions[0], expressions[0]); { BinaryenType paramTypes[] = { 0 }; functionTypes[0] = BinaryenAddFunctionType(the_module, "rustfn-0-3", 0, paramTypes, 0); } expressions[7] = BinaryenConst(the_module, BinaryenLiteralInt32(0)); expressions[8] = BinaryenLoad(the_module, 4, 0, 0, 0, 1, expressions[7]); expressions[9] = BinaryenSetLocal(the_module, 0, expressions[8]); relooperBlocks[2] = RelooperAddBlock(the_relooper, expressions[9]); RelooperAddBranch(relooperBlocks[2], relooperBlocks[0], expressions[0], expressions[0]); expressions[10] = RelooperRenderAndDispose(the_relooper, relooperBlocks[2], 1, the_module); { BinaryenType varTypes[] = { 1, 1, 2 }; functions[0] = BinaryenAddFunction(the_module, "main", functionTypes[0], varTypes, 3, expressions[10]); } BinaryenAddExport(the_module, "main", "main"); { BinaryenType paramTypes[] = { 0 }; functionTypes[1] = BinaryenAddFunctionType(the_module, "__wasm_start", 0, paramTypes, 0); } { const char* segments[] = { 0 }; BinaryenExpressionRef segmentOffsets[] = { 0 }; BinaryenIndex segmentSizes[] = { 0 }; BinaryenSetMemory(the_module, 1024, 1024, NULL, segments, segmentOffsets, segmentSizes, 0); } expressions[11] = BinaryenConst(the_module, BinaryenLiteralInt32(65535)); expressions[12] = BinaryenConst(the_module, BinaryenLiteralInt32(0)); expressions[13] = BinaryenStore(the_module, 4, 0, 0, expressions[12], expressions[11], 1); { BinaryenExpressionRef operands[] = { 0 }; expressions[14] = BinaryenCall(the_module, "main", operands, 0, 0); } { BinaryenExpressionRef children[] = { expressions[13], expressions[14] }; expressions[15] = BinaryenBlock(the_module, NULL, children, 2, BinaryenUndefined()); } BinaryenAddExport(the_module, "__wasm_start", "rust_entry"); { BinaryenType varTypes[] = { 0 }; functions[1] = BinaryenAddFunction(the_module, "__wasm_start", functionTypes[1], varTypes, 0, expressions[15]); } BinaryenModuleValidate(the_module); BinaryenModulePrint(the_module); // check that binary read-write works { char buffer[1024]; size_t size = BinaryenModuleWrite(the_module, buffer, 1024); printf("%d\n", size); BinaryenModuleRef copy = BinaryenModuleRead(buffer, size); BinaryenModulePrint(copy); BinaryenModuleDispose(copy); } BinaryenModuleDispose(the_module); return 0; }