1 files changed, 45 insertions, 0 deletions
diff --git a/third_party/rust/lucet-runtime-wasmsbx/include/lucet_vmctx.h b/third_party/rust/lucet-runtime-wasmsbx/include/lucet_vmctx.h
new file mode 100644
index 0000000000..76af4afe58
--- /dev/null
+++ b/third_party/rust/lucet-runtime-wasmsbx/include/lucet_vmctx.h
@@ -0,0 +1,45 @@
+#ifndef LUCET_VMCTX_H
+#define LUCET_VMCTX_H
+
+#include <stdbool.h>
+#include <stddef.h>
+#include <stdint.h>
+
+// Typedefs for use in hostcall signatures (host functions called from the
+// guest). Instances always have a 32-bit pointer size into their heap, and
+// 32-bit size_t type.
+typedef uint32_t guest_int;
+typedef uint32_t guest_ptr_t;
+typedef uint32_t guest_size_t;
+
+struct lucet_vmctx;
+
+// Get a pointer to the instance heap.
+char *lucet_vmctx_get_heap(struct lucet_vmctx const *);
+
+// Check if a memory region is inside the instance heap.
+bool lucet_vmctx_check_heap(struct lucet_vmctx const *, void *ptr, size_t len);
+
+// Get the embedding context for a given instance
+// TODO: rename
+void *lucet_vmctx_get_delegate(struct lucet_vmctx const *);
+
+void lucet_vmctx_terminate(struct lucet_vmctx const *, void *info);
+
+void *lucet_vmctx_yield(struct lucet_vmctx const *, void *val);
+
+// returns the current number of wasm pages
+uint32_t lucet_vmctx_current_memory(struct lucet_vmctx const *);
+
+// takes the number of wasm pages to grow by. returns the number of pages before
+// the call on success, or -1 on failure.
+int32_t lucet_vmctx_grow_memory(struct lucet_vmctx const *, uint32_t additional_pages);
+
+// returns the address of a function given its ID
+void *lucet_vmctx_get_func_from_idx(struct lucet_vmctx const *ctx, uint32_t table_id,
+                                    uint32_t func_id);
+
+// Mostly for tests - this conversion is builtin to lucetc
+int64_t *lucet_vmctx_get_globals(struct lucet_vmctx const *ctx);
+
+#endif // LUCET_VMCTX_H