Make some binary reading/writing utilities public (#245)

* Make some binary reading/writing utilities public

This is mostly a refactor to make some of the internal
binary reading/writing utilities public and available
to the wasm linker prototype that I'm working on.

1 files changed, 5 insertions, 4 deletions

diff --git a/src/binary-reader-ast.c b/src/binary-reader-ast.c
index 01c092b1..e82b82c2 100644
--- a/src/binary-reader-ast.c
+++ b/src/binary-reader-ast.c
@@ -837,10 +837,11 @@ static WasmResult end_elem_segment_init_expr(uint32_t index, void* user_data) {
   return WASM_OK;
 }
 
-static WasmResult on_elem_segment_function_index_count(uint32_t index,
-                                                       uint32_t count,
-                                                       void* user_data) {
-  Context* ctx = user_data;
+static WasmResult on_elem_segment_function_index_count(
+    WasmBinaryReaderContext* context,
+    uint32_t index,
+    uint32_t count) {
+  Context* ctx = context->user_data;
   assert(index == ctx->module->elem_segments.size - 1);
   WasmElemSegment* segment = ctx->module->elem_segments.data[index];
   wasm_reserve_vars(ctx->allocator, &segment->vars, count);