diff options
author | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-16 19:19:13 +0000 |
---|---|---|
committer | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-16 19:19:13 +0000 |
commit | ccd992355df7192993c666236047820244914598 (patch) | |
tree | f00fea65147227b7743083c6148396f74cd66935 /src/runtime/internal/sys/consts.go | |
parent | Initial commit. (diff) | |
download | golang-1.21-ccd992355df7192993c666236047820244914598.tar.xz golang-1.21-ccd992355df7192993c666236047820244914598.zip |
Adding upstream version 1.21.8.upstream/1.21.8
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'src/runtime/internal/sys/consts.go')
-rw-r--r-- | src/runtime/internal/sys/consts.go | 36 |
1 files changed, 36 insertions, 0 deletions
diff --git a/src/runtime/internal/sys/consts.go b/src/runtime/internal/sys/consts.go new file mode 100644 index 0000000..98c0f09 --- /dev/null +++ b/src/runtime/internal/sys/consts.go @@ -0,0 +1,36 @@ +// Copyright 2014 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 sys + +import ( + "internal/goarch" + "internal/goos" +) + +// AIX requires a larger stack for syscalls. +// The race build also needs more stack. See issue 54291. +// This arithmetic must match that in cmd/internal/objabi/stack.go:stackGuardMultiplier. +const StackGuardMultiplier = 1 + goos.IsAix + isRace + +// DefaultPhysPageSize is the default physical page size. +const DefaultPhysPageSize = goarch.DefaultPhysPageSize + +// PCQuantum is the minimal unit for a program counter (1 on x86, 4 on most other systems). +// The various PC tables record PC deltas pre-divided by PCQuantum. +const PCQuantum = goarch.PCQuantum + +// Int64Align is the required alignment for a 64-bit integer (4 on 32-bit systems, 8 on 64-bit). +const Int64Align = goarch.PtrSize + +// MinFrameSize is the size of the system-reserved words at the bottom +// of a frame (just above the architectural stack pointer). +// It is zero on x86 and PtrSize on most non-x86 (LR-based) systems. +// On PowerPC it is larger, to cover three more reserved words: +// the compiler word, the link editor word, and the TOC save word. +const MinFrameSize = goarch.MinFrameSize + +// StackAlign is the required alignment of the SP register. +// The stack must be at least word aligned, but some architectures require more. +const StackAlign = goarch.StackAlign |