1 files changed, 34 insertions, 0 deletions
diff --git a/src/internal/coverage/rtcov/rtcov.go b/src/internal/coverage/rtcov/rtcov.go
new file mode 100644
index 0000000..bbb93ac
--- /dev/null
+++ b/src/internal/coverage/rtcov/rtcov.go
@@ -0,0 +1,34 @@
+// Copyright 2022 The Go Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
+package rtcov
+
+// This package contains types whose structure is shared between
+// the runtime package and the "runtime/coverage" package.
+
+// CovMetaBlob is a container for holding the meta-data symbol (an
+// RODATA variable) for an instrumented Go package. Here "p" points to
+// the symbol itself, "len" is the length of the sym in bytes, and
+// "hash" is an md5sum for the sym computed by the compiler. When
+// the init function for a coverage-instrumented package executes, it
+// will make a call into the runtime which will create a covMetaBlob
+// object for the package and chain it onto a global list.
+type CovMetaBlob struct {
+	P                  *byte
+	Len                uint32
+	Hash               [16]byte
+	PkgPath            string
+	PkgID              int
+	CounterMode        uint8 // coverage.CounterMode
+	CounterGranularity uint8 // coverage.CounterGranularity
+}
+
+// CovCounterBlob is a container for encapsulating a counter section
+// (BSS variable) for an instrumented Go module. Here "counters"
+// points to the counter payload and "len" is the number of uint32
+// entries in the section.
+type CovCounterBlob struct {
+	Counters *uint32
+	Len      uint64
+}