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bc9691c465
The funcdata symbol incorrectly named the dead value map the dead pointer map. The dead value map identifies all dead values, including pointers and non-pointers, in a stack frame. The purpose of this map is to allow the runtime to poison locations of dead data to catch lost invariants. R=golang-dev, iant CC=golang-dev https://golang.org/cl/38670043
25 lines
979 B
C
25 lines
979 B
C
// Copyright 2013 The Go Authors. All rights reserved.
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// Use of this source code is governed by a BSD-style
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// license that can be found in the LICENSE file.
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// This file defines the IDs for PCDATA and FUNCDATA instructions
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// in Go binaries. It is included by both C and assembly, so it must
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// be written using #defines. It is included by the runtime package
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// as well as the compilers.
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#define PCDATA_ArgSize 0 /* argument size at CALL instruction */
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#define PCDATA_StackMapIndex 1
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#define FUNCDATA_ArgsPointerMaps 2 /* garbage collector blocks */
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#define FUNCDATA_LocalsPointerMaps 3
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#define FUNCDATA_DeadValueMaps 4
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// To be used in assembly.
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#define ARGSIZE(n) PCDATA $PCDATA_ArgSize, $n
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// ArgsSizeUnknown is set in Func.argsize to mark all functions
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// whose argument size is unknown (C vararg functions, and
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// assembly code without an explicit specification).
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// This value is generated by the compiler, assembler, or linker.
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#define ArgsSizeUnknown 0x80000000
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