[experiment] add alternative wasm sqlite3 implementation available via build-tag (#2863)

This allows for building GoToSocial with [SQLite transpiled to WASM](https://github.com/ncruces/go-sqlite3) and accessed through [Wazero](https://wazero.io/).

1 files changed, 18 insertions, 0 deletions

diff --git a/vendor/github.com/tetratelabs/wazero/internal/platform/mmap_other.go b/vendor/github.com/tetratelabs/wazero/internal/platform/mmap_other.go
new file mode 100644
index 000000000..ed5c40a4d
--- /dev/null
+++ b/vendor/github.com/tetratelabs/wazero/internal/platform/mmap_other.go
@@ -0,0 +1,18 @@
+// Separated from linux which has support for huge pages.
+//go:build darwin || freebsd
+
+package platform
+
+import "syscall"
+
+func mmapCodeSegment(size, prot int) ([]byte, error) {
+	return syscall.Mmap(
+		-1,
+		0,
+		size,
+		prot,
+		// Anonymous as this is not an actual file, but a memory,
+		// Private as this is in-process memory region.
+		syscall.MAP_ANON|syscall.MAP_PRIVATE,
+	)
+}