Adding upstream version 1.16.10.upstream/1.16.10upstream

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 47 insertions, 0 deletions

diff --git a/src/cmd/internal/objabi/funcdata.go b/src/cmd/internal/objabi/funcdata.go
new file mode 100644
index 0000000..faa2863
--- /dev/null
+++ b/src/cmd/internal/objabi/funcdata.go
@@ -0,0 +1,47 @@
+// Copyright 2013 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 objabi
+
+// This file defines the IDs for PCDATA and FUNCDATA instructions
+// in Go binaries.
+//
+// These must agree with ../../../runtime/funcdata.h and
+// ../../../runtime/symtab.go.
+
+const (
+	PCDATA_UnsafePoint   = 0
+	PCDATA_StackMapIndex = 1
+	PCDATA_InlTreeIndex  = 2
+
+	FUNCDATA_ArgsPointerMaps    = 0
+	FUNCDATA_LocalsPointerMaps  = 1
+	FUNCDATA_StackObjects       = 2
+	FUNCDATA_InlTree            = 3
+	FUNCDATA_OpenCodedDeferInfo = 4
+
+	// ArgsSizeUnknown is set in Func.argsize to mark all functions
+	// whose argument size is unknown (C vararg functions, and
+	// assembly code without an explicit specification).
+	// This value is generated by the compiler, assembler, or linker.
+	ArgsSizeUnknown = -0x80000000
+)
+
+// Special PCDATA values.
+const (
+	// PCDATA_UnsafePoint values.
+	PCDATA_UnsafePointSafe   = -1 // Safe for async preemption
+	PCDATA_UnsafePointUnsafe = -2 // Unsafe for async preemption
+
+	// PCDATA_Restart1(2) apply on a sequence of instructions, within
+	// which if an async preemption happens, we should back off the PC
+	// to the start of the sequence when resuming.
+	// We need two so we can distinguish the start/end of the sequence
+	// in case that two sequences are next to each other.
+	PCDATA_Restart1 = -3
+	PCDATA_Restart2 = -4
+
+	// Like PCDATA_Restart1, but back to function entry if async preempted.
+	PCDATA_RestartAtEntry = -5
+)